Bump build number and update changelog

Closes #125

CHANGELOG.md

@@ -1,5 +1,40 @@
 # Changelog
 
+## 2021.1 (20)
+This is a big one! In addition to a bunch of fixes for anyone on the iOS 15 beta, there are a couple of big ticket features, including the Open in Tusker action extension and the Disable Infinite Scrolling preference.
+
+Features/Improvements:
+- Add Open in Tusker action extension
+  - Quickly search for any URL in Tusker
+  - In a share sheet, scroll to the bottom, tap "Edit Actions..." and turn on the "Open in Tusker" action
+- Add Digital Wellness preference to disable infinite scrolling
+- Add fast account switching indicator to My Profile tab
+- Improve VoiceOver accessibility of polls and timeline statuses
+- iPadOS: Create multiple main windows for different accounts by dragging from an account in Preferences
+- iPadOS: Delete attachments on Compose screen by right-clicking and selecting Delete
+- iPadOS 15: Add Open in New Window context menu action to most things
+- iPadOS 15: Allow dragging the Compose sheet into a separate window
+
+Bugfixes:
+- Fix being unable to commit previewed account from timeline status
+- Fix crash when searching fails
+- Fix poll option percentages being cut off
+- Fix polls not collapsing inside CWs
+- Fix More button on profiles not being accessible with VoiceOver
+- Fix VoiceOver reading profile fields in incorrect order
+- Fix gallery animations jittering on devices with square screens (iPads, non-notched iPhones)
+- Fix CW text jumping around post collapse animation
+- iOS 15: Fix crash due when showing Draw Something screen in Compose
+- iPadOS 14/iOS 15: Fix navigation bar turning transparent after opening the attachment gallery
+- iPadOS 14/iOS 15: Fix drag-selecting poll options initiating a status cell drag interaction
+- iPadOS: Fix crash when loading a previously-opened conversation window
+- iPadOS 15: Fix showing Compose screen when keyboard focus moves through the sidebar
+
+Known Issues:
+- Disable Infinite Scrolling preference only affects timelines, not notifications or profiles
+- iPadOS 15: The Compose sheet cannot be dismissed by swiping down
+- iPadOS 15: Keyboard focus is stuck in the sidebar
+
 ## 2021.1 (19)
 This is an emergency fix for Tusker breaking when connecting to Mastodon instances on 3.4.0rc1.
 

OpenInTusker/Action.js

@@ -0,0 +1,29 @@
+//
+//  Action.js
+//  OpenInTusker
+//
+//  Created by Shadowfacts on 5/22/21.
+//  Copyright © 2021 Shadowfacts. All rights reserved.
+//
+
+var Action = function() {};
+
+Action.prototype = {
+
+    run: function(arguments) {
+        const results = {
+            url: window.location.href,
+        };
+        const el = document.querySelector('link[rel=alternate][type="application/activity+json"]');
+        if (el) {
+            results.activityPubURL = el.href;
+        }
+        arguments.completionFunction(results);
+    },
+
+    finalize: function(arguments) {
+    }
+
+};
+
+var ExtensionPreprocessingJS = new Action();

OpenInTusker/ActionViewController.swift

@@ -0,0 +1,100 @@
+//
+//  ActionViewController.swift
+//  OpenInTusker
+//
+//  Created by Shadowfacts on 5/23/21.
+//  Copyright © 2021 Shadowfacts. All rights reserved.
+//
+
+import UIKit
+import MobileCoreServices
+
+class ActionViewController: UIViewController {
+
+    @IBOutlet weak var imageView: UIImageView!
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
+        findURLFromWebPage { (components) in
+            if let components = components {
+                self.searchForURLInApp(components)
+            } else {
+                self.findURLItem { (components) in
+                    if let components = components {
+                        self.searchForURLInApp(components)
+                    }
+                }
+            }
+        }
+    }
+    
+    private func findURLFromWebPage(completion: @escaping (URLComponents?) -> Void) {
+        for item in extensionContext!.inputItems as! [NSExtensionItem] {
+            for provider in item.attachments! {
+                guard provider.hasItemConformingToTypeIdentifier(kUTTypePropertyList as String) else {
+                    continue
+                }
+                provider.loadItem(forTypeIdentifier: kUTTypePropertyList as String, options: nil) { (result, error) in
+                    guard let result = result as? [String: Any],
+                          let jsResult = result[NSExtensionJavaScriptPreprocessingResultsKey] as? [String: Any],
+                          let urlString = jsResult["activityPubURL"] as? String ?? jsResult["url"] as? String,
+                          let components = URLComponents(string: urlString) else {
+                        completion(nil)
+                        return
+                    }
+                    
+                    completion(components)
+                }
+                return
+            }
+        }
+        
+        completion(nil)
+    }
+    
+    private func findURLItem(completion: @escaping (URLComponents?) -> Void) {
+        for item in extensionContext!.inputItems as! [NSExtensionItem] {
+            for provider in item.attachments! {
+                guard provider.hasItemConformingToTypeIdentifier(kUTTypeURL as String) else {
+                    continue
+                }
+                provider.loadItem(forTypeIdentifier: kUTTypeURL as String, options: nil) { (result, error) in
+                    guard let result = result as? URL,
+                          let components = URLComponents(url: result, resolvingAgainstBaseURL: false) else {
+                        completion(nil)
+                        return
+                    }
+                    completion(components)
+                }
+                return
+            }
+        }
+        
+        completion(nil)
+    }
+    
+    private func searchForURLInApp(_ components: URLComponents) {
+        var components = components
+        components.scheme = "tusker"
+        self.openURL(components.url!)
+        self.extensionContext!.completeRequest(returningItems: nil, completionHandler: nil)
+    }
+
+    @objc private func openURL(_ url: URL) {
+        var responder: UIResponder = self
+        while let parent = responder.next {
+            if let application = parent as? UIApplication {
+                application.perform(#selector(openURL(_:)), with: url)
+                break
+            } else {
+                responder = parent
+            }
+        }
+    }
+    
+    @IBAction func done() {
+        extensionContext!.completeRequest(returningItems: nil, completionHandler: nil)
+    }
+
+}

OpenInTusker/Base.lproj/MainInterface.storyboard

@@ -0,0 +1,65 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="18122" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="ObA-dk-sSI">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="18093"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="System colors in document resources" minToolsVersion="11.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--Image-->
+        <scene sceneID="7MM-of-jgj">
+            <objects>
+                <viewController title="Image" id="ObA-dk-sSI" customClass="ActionViewController" customModule="OpenInTusker" customModuleProvider="target" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="zMn-AG-sqS">
+                        <rect key="frame" x="0.0" y="0.0" width="320" height="528"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <navigationBar contentMode="scaleToFill" horizontalCompressionResistancePriority="751" verticalCompressionResistancePriority="751" translatesAutoresizingMaskIntoConstraints="NO" id="NOA-Dm-cuz">
+                                <rect key="frame" x="0.0" y="44" width="320" height="44"/>
+                                <items>
+                                    <navigationItem id="3HJ-uW-3hn">
+                                        <barButtonItem key="leftBarButtonItem" title="Done" style="done" id="WYi-yp-eM6">
+                                            <connections>
+                                                <action selector="done" destination="ObA-dk-sSI" id="Qdu-qn-U6V"/>
+                                            </connections>
+                                        </barButtonItem>
+                                    </navigationItem>
+                                </items>
+                            </navigationBar>
+                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Unable to find Mastodon link on this page." textAlignment="center" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="Yho-gp-VyR">
+                                <rect key="frame" x="0.0" y="254" width="320" height="20.5"/>
+                                <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                                <nil key="textColor"/>
+                                <nil key="highlightedColor"/>
+                            </label>
+                        </subviews>
+                        <viewLayoutGuide key="safeArea" id="VVe-Uw-JpX"/>
+                        <color key="backgroundColor" systemColor="systemBackgroundColor"/>
+                        <constraints>
+                            <constraint firstItem="VVe-Uw-JpX" firstAttribute="trailing" secondItem="NOA-Dm-cuz" secondAttribute="trailing" id="A05-Pj-hrr"/>
+                            <constraint firstItem="NOA-Dm-cuz" firstAttribute="leading" secondItem="VVe-Uw-JpX" secondAttribute="leading" id="HxO-8t-aoh"/>
+                            <constraint firstItem="Yho-gp-VyR" firstAttribute="centerY" secondItem="zMn-AG-sqS" secondAttribute="centerY" id="R7q-OB-hhA"/>
+                            <constraint firstItem="Yho-gp-VyR" firstAttribute="leading" secondItem="VVe-Uw-JpX" secondAttribute="leading" id="TEy-zi-dP7"/>
+                            <constraint firstItem="Yho-gp-VyR" firstAttribute="trailing" secondItem="VVe-Uw-JpX" secondAttribute="trailing" id="Uvn-0x-Y6N"/>
+                            <constraint firstItem="NOA-Dm-cuz" firstAttribute="top" secondItem="VVe-Uw-JpX" secondAttribute="top" id="we0-1t-bgp"/>
+                        </constraints>
+                    </view>
+                    <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
+                    <size key="freeformSize" width="320" height="528"/>
+                    <connections>
+                        <outlet property="view" destination="zMn-AG-sqS" id="Qma-de-2ek"/>
+                    </connections>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="X47-rx-isc" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="-61" y="-57"/>
+        </scene>
+    </scenes>
+    <resources>
+        <systemColor name="systemBackgroundColor">
+            <color white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+        </systemColor>
+    </resources>
+</document>

OpenInTusker/Info.plist

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>Open in Tusker</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(MARKETING_VERSION)</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionAttributes</key>
+		<dict>
+			<key>NSExtensionJavaScriptPreprocessingFile</key>
+			<string>Action</string>
+			<key>NSExtensionActivationRule</key>
+			<dict>
+				<key>NSExtensionActivationSupportsAttachmentsWithMinCount</key>
+				<integer>1</integer>
+				<key>NSExtensionActivationSupportsWebPageWithMaxCount</key>
+				<integer>1</integer>
+				<key>NSExtensionActivationSupportsWebURLWithMaxCount</key>
+				<integer>1</integer>
+			</dict>
+			<key>NSExtensionServiceAllowsFinderPreviewItem</key>
+			<true/>
+			<key>NSExtensionServiceAllowsTouchBarItem</key>
+			<true/>
+			<key>NSExtensionServiceFinderPreviewIconName</key>
+			<string>NSActionTemplate</string>
+			<key>NSExtensionServiceTouchBarBezelColorName</key>
+			<string>TouchBarBezel</string>
+			<key>NSExtensionServiceTouchBarIconName</key>
+			<string>NSActionTemplate</string>
+		</dict>
+		<key>NSExtensionMainStoryboard</key>
+		<string>MainInterface</string>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.ui-services</string>
+	</dict>
+</dict>
+</plist>

OpenInTusker/Media.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,103 @@
+{
+  "images" : [
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "40x40"
+    },
+    {
+      "filename" : "60x60@2x.png",
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "60x60"
+    },
+    {
+      "filename" : "60x60@3x.png",
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "60x60"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "76x76"
+    },
+    {
+      "filename" : "76x76@2x.png",
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "76x76"
+    },
+    {
+      "filename" : "83.5x83.5@2x.png",
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "83.5x83.5"
+    },
+    {
+      "filename" : "1024x1024@1x.png",
+      "idiom" : "ios-marketing",
+      "scale" : "1x",
+      "size" : "1024x1024"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

OpenInTusker/Media.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

OpenInTusker/Media.xcassets/TouchBarBezel.colorset/Contents.json

@@ -0,0 +1,14 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  },
+  "colors" : [
+    {
+      "idiom" : "mac",
+      "color" : {
+        "reference" : "systemPurpleColor"
+      }
+    }
+  ]
+}

OpenInTusker/OpenInTusker.entitlements

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.app-sandbox</key>
+	<true/>
+	<key>com.apple.security.network.client</key>
+	<true/>
+</dict>
+</plist>

Tusker.xcodeproj/project.pbxproj

@@ -155,6 +155,7 @@
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 		D6531DF0246B867E000F9538 /* GifvAttachmentViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6531DEF246B867E000F9538 /* GifvAttachmentViewController.swift */; };
 		D6538945214D6D7500E3CEFC /* TableViewSwipeActionProvider.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6538944214D6D7500E3CEFC /* TableViewSwipeActionProvider.swift */; };
+		D653F411267D1E32004E32B1 /* DiffableTimelineLikeTableViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D653F410267D1E32004E32B1 /* DiffableTimelineLikeTableViewController.swift */; };
 		D65C6BF525478A9C00A6E89C /* BackgroundableViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D65C6BF425478A9C00A6E89C /* BackgroundableViewController.swift */; };
 		D65F613423AEAB6600F3CFD3 /* OnboardingTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D65F613323AEAB6600F3CFD3 /* OnboardingTests.swift */; };
 		D6620ACE2511A0ED00312CA0 /* StatusStateResolver.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6620ACD2511A0ED00312CA0 /* StatusStateResolver.swift */; };
@@ -186,6 +187,7 @@
 		D67895C0246870DE00D4CD9E /* LocalAccountAvatarView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D67895BF246870DE00D4CD9E /* LocalAccountAvatarView.swift */; };
 		D679C09F215850EF00DA27FE /* XCBActions.swift in Sources */ = {isa = PBXBuildFile; fileRef = D679C09E215850EF00DA27FE /* XCBActions.swift */; };
 		D67B506D250B291200FAECFB /* BlurHashDecode.swift in Sources */ = {isa = PBXBuildFile; fileRef = D67B506C250B291200FAECFB /* BlurHashDecode.swift */; };
+		D67C1795266D57D10070F250 /* FastAccountSwitcherIndicatorView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D67C1794266D57D10070F250 /* FastAccountSwitcherIndicatorView.swift */; };
 		D67C57AD21E265FC00C3118B /* LargeAccountDetailView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D67C57AC21E265FC00C3118B /* LargeAccountDetailView.swift */; };
 		D67C57AF21E28EAD00C3118B /* Array+Uniques.swift in Sources */ = {isa = PBXBuildFile; fileRef = D67C57AE21E28EAD00C3118B /* Array+Uniques.swift */; };
 		D68015402401A6BA00D6103B /* ComposingPrefsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D680153F2401A6BA00D6103B /* ComposingPrefsView.swift */; };
@@ -303,10 +305,17 @@
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 		D6DD353D22F28CD000A9563A /* ContentWarningCopyMode.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6DD353C22F28CD000A9563A /* ContentWarningCopyMode.swift */; };
 		D6DD353F22F502EC00A9563A /* Preferences+Notification.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6DD353E22F502EC00A9563A /* Preferences+Notification.swift */; };
+		D6DEA0DE268400C300FE896A /* ConfirmLoadMoreTableViewCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6DEA0DC268400C300FE896A /* ConfirmLoadMoreTableViewCell.swift */; };
+		D6DEA0DF268400C300FE896A /* ConfirmLoadMoreTableViewCell.xib in Resources */ = {isa = PBXBuildFile; fileRef = D6DEA0DD268400C300FE896A /* ConfirmLoadMoreTableViewCell.xib */; };
 		D6DF95C12533F5DE0027A9B6 /* RelationshipMO.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6DF95C02533F5DE0027A9B6 /* RelationshipMO.swift */; };
 		D6DFC69E242C490400ACC392 /* TrackpadScrollGestureRecognizer.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6DFC69D242C490400ACC392 /* TrackpadScrollGestureRecognizer.swift */; };
 		D6DFC6A0242C4CCC00ACC392 /* WeakArray.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6DFC69F242C4CCC00ACC392 /* WeakArray.swift */; };
 		D6E0DC8E216EDF1E00369478 /* Previewing.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6E0DC8D216EDF1E00369478 /* Previewing.swift */; };
+		D6E343AB265AAD6B00C4AA01 /* Media.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = D6E343AA265AAD6B00C4AA01 /* Media.xcassets */; };
+		D6E343AD265AAD6B00C4AA01 /* ActionViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6E343AC265AAD6B00C4AA01 /* ActionViewController.swift */; };
+		D6E343B0265AAD6B00C4AA01 /* MainInterface.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = D6E343AE265AAD6B00C4AA01 /* MainInterface.storyboard */; };
+		D6E343B4265AAD6B00C4AA01 /* OpenInTusker.appex in Embed App Extensions */ = {isa = PBXBuildFile; fileRef = D6E343A8265AAD6B00C4AA01 /* OpenInTusker.appex */; settings = {ATTRIBUTES = (RemoveHeadersOnCopy, ); }; };
+		D6E343BA265AAD8C00C4AA01 /* Action.js in Resources */ = {isa = PBXBuildFile; fileRef = D6E343B9265AAD8C00C4AA01 /* Action.js */; };
 		D6E4267725327FB400C02E1C /* ComposeAutocompleteView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6E4267625327FB400C02E1C /* ComposeAutocompleteView.swift */; };
 		D6E4269D2532A3E100C02E1C /* FuzzyMatcher.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6E4269C2532A3E100C02E1C /* FuzzyMatcher.swift */; };
 		D6E426AD25334DA500C02E1C /* FuzzyMatcherTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6E426AC25334DA500C02E1C /* FuzzyMatcherTests.swift */; };
@@ -363,9 +372,27 @@
 			remoteGlobalIDString = D6D4DDCB212518A000E1C4BB;
 			remoteInfo = Tusker;
 		};
+		D6E343B2265AAD6B00C4AA01 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = D6D4DDC4212518A000E1C4BB /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = D6E343A7265AAD6B00C4AA01;
+			remoteInfo = OpenInTusker;
+		};
 /* End PBXContainerItemProxy section */
 
 /* Begin PBXCopyFilesBuildPhase section */
+		D6E3438F2659849800C4AA01 /* Embed App Extensions */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 13;
+			files = (
+				D6E343B4265AAD6B00C4AA01 /* OpenInTusker.appex in Embed App Extensions */,
+			);
+			name = "Embed App Extensions";
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		D6F953E52125197500CF0F2B /* Embed Frameworks */ = {
 			isa = PBXCopyFilesBuildPhase;
 			buildActionMask = 2147483647;
@@ -388,7 +415,6 @@
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 		04586B4222B301470021BD04 /* AppearancePrefsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppearancePrefsView.swift; sourceTree = "<group>"; };
-		0461A38F2163CBAE00C0A807 /* Cache.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; path = Cache.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		04D14BAE22B34A2800642648 /* GalleryViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GalleryViewController.swift; sourceTree = "<group>"; };
 		04DACE8B212CB14B009840C4 /* MainTabBarViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MainTabBarViewController.swift; sourceTree = "<group>"; };
 		04DACE8D212CC7CC009840C4 /* ImageCache.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ImageCache.swift; sourceTree = "<group>"; };
@@ -530,6 +556,7 @@
 		D6531DED246B81C9000F9538 /* GifvAttachmentView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GifvAttachmentView.swift; sourceTree = "<group>"; };
 		D6531DEF246B867E000F9538 /* GifvAttachmentViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GifvAttachmentViewController.swift; sourceTree = "<group>"; };
 		D6538944214D6D7500E3CEFC /* TableViewSwipeActionProvider.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TableViewSwipeActionProvider.swift; sourceTree = "<group>"; };
+		D653F410267D1E32004E32B1 /* DiffableTimelineLikeTableViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DiffableTimelineLikeTableViewController.swift; sourceTree = "<group>"; };
 		D65C6BF425478A9C00A6E89C /* BackgroundableViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BackgroundableViewController.swift; sourceTree = "<group>"; };
 		D65F612D23AE990C00F3CFD3 /* Embassy.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; path = Embassy.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		D65F613023AE99E000F3CFD3 /* Ambassador.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; path = Ambassador.framework; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -565,6 +592,7 @@
 		D67895BF246870DE00D4CD9E /* LocalAccountAvatarView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LocalAccountAvatarView.swift; sourceTree = "<group>"; };
 		D679C09E215850EF00DA27FE /* XCBActions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = XCBActions.swift; sourceTree = "<group>"; };
 		D67B506C250B291200FAECFB /* BlurHashDecode.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BlurHashDecode.swift; sourceTree = "<group>"; };
+		D67C1794266D57D10070F250 /* FastAccountSwitcherIndicatorView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FastAccountSwitcherIndicatorView.swift; sourceTree = "<group>"; };
 		D67C57AC21E265FC00C3118B /* LargeAccountDetailView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LargeAccountDetailView.swift; sourceTree = "<group>"; };
 		D67C57AE21E28EAD00C3118B /* Array+Uniques.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Array+Uniques.swift"; sourceTree = "<group>"; };
 		D680153F2401A6BA00D6103B /* ComposingPrefsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ComposingPrefsView.swift; sourceTree = "<group>"; };
@@ -683,10 +711,19 @@
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 		D6DD353C22F28CD000A9563A /* ContentWarningCopyMode.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ContentWarningCopyMode.swift; sourceTree = "<group>"; };
 		D6DD353E22F502EC00A9563A /* Preferences+Notification.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Preferences+Notification.swift"; sourceTree = "<group>"; };
+		D6DEA0DC268400C300FE896A /* ConfirmLoadMoreTableViewCell.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ConfirmLoadMoreTableViewCell.swift; sourceTree = "<group>"; };
+		D6DEA0DD268400C300FE896A /* ConfirmLoadMoreTableViewCell.xib */ = {isa = PBXFileReference; lastKnownFileType = file.xib; path = ConfirmLoadMoreTableViewCell.xib; sourceTree = "<group>"; };
 		D6DF95C02533F5DE0027A9B6 /* RelationshipMO.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RelationshipMO.swift; sourceTree = "<group>"; };
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 		D6DFC69F242C4CCC00ACC392 /* WeakArray.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = WeakArray.swift; sourceTree = "<group>"; };
 		D6E0DC8D216EDF1E00369478 /* Previewing.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Previewing.swift; sourceTree = "<group>"; };
+		D6E343A8265AAD6B00C4AA01 /* OpenInTusker.appex */ = {isa = PBXFileReference; explicitFileType = "wrapper.app-extension"; includeInIndex = 0; path = OpenInTusker.appex; sourceTree = BUILT_PRODUCTS_DIR; };
+		D6E343AA265AAD6B00C4AA01 /* Media.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Media.xcassets; sourceTree = "<group>"; };
+		D6E343AC265AAD6B00C4AA01 /* ActionViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ActionViewController.swift; sourceTree = "<group>"; };
+		D6E343AF265AAD6B00C4AA01 /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/MainInterface.storyboard; sourceTree = "<group>"; };
+		D6E343B1265AAD6B00C4AA01 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		D6E343B5265AAD6B00C4AA01 /* OpenInTusker.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = OpenInTusker.entitlements; sourceTree = "<group>"; };
+		D6E343B9265AAD8C00C4AA01 /* Action.js */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.javascript; path = Action.js; sourceTree = "<group>"; };
 		D6E4267625327FB400C02E1C /* ComposeAutocompleteView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ComposeAutocompleteView.swift; sourceTree = "<group>"; };
 		D6E4269C2532A3E100C02E1C /* FuzzyMatcher.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FuzzyMatcher.swift; sourceTree = "<group>"; };
 		D6E426AC25334DA500C02E1C /* FuzzyMatcherTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FuzzyMatcherTests.swift; sourceTree = "<group>"; };
@@ -752,6 +789,13 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		D6E343A5265AAD6B00C4AA01 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXFrameworksBuildPhase section */
 
 /* Begin PBXGroup section */
@@ -1413,6 +1457,7 @@
 				D6B4A4FE2506B81A000C81C1 /* AccountDisplayNameLabel.swift */,
 				D6E426B225337C7000C02E1C /* CustomEmojiImageView.swift */,
 				D6EAE0DA2550CC8A002DB0AC /* FocusableTextField.swift */,
+				D67C1794266D57D10070F250 /* FastAccountSwitcherIndicatorView.swift */,
 				D67C57A721E2649B00C3118B /* Account Detail */,
 				D626494023C122C800612E6E /* Asset Picker */,
 				D61959D0241E842400A37B8E /* Draft Cell */,
@@ -1424,6 +1469,7 @@
 				D6A3BC872321F78000FD64D5 /* Account Cell */,
 				D611C2CC232DC5FC00C86A49 /* Hashtag Cell */,
 				D61AC1DA232EA43100C54D2D /* Instance Cell */,
+				D6DEA0DB268400AF00FE896A /* Confirm Load More Cell */,
 			);
 			path = Views;
 			sourceTree = "<group>";
@@ -1446,6 +1492,7 @@
 				D65C6BF425478A9C00A6E89C /* BackgroundableViewController.swift */,
 				D6B81F3B2560365300F6E31D /* RefreshableViewController.swift */,
 				D65234C8256189D0001AF9CF /* TimelineLikeTableViewController.swift */,
+				D653F410267D1E32004E32B1 /* DiffableTimelineLikeTableViewController.swift */,
 				D625E4812588262A0074BB2B /* DraggableTableViewCell.swift */,
 				D6A6C10425B6138A00298D0F /* StatusTablePrefetching.swift */,
 			);
@@ -1466,12 +1513,12 @@
 			isa = PBXGroup;
 			children = (
 				D6BC874421961F73006163F1 /* Gifu.framework */,
-				0461A38F2163CBAE00C0A807 /* Cache.framework */,
 				D61099AC2144B0CC00432DC2 /* Pachyderm */,
 				D61099B92144B0CC00432DC2 /* PachydermTests */,
 				D6D4DDCE212518A000E1C4BB /* Tusker */,
 				D6D4DDE3212518A200E1C4BB /* TuskerTests */,
 				D6D4DDEE212518A200E1C4BB /* TuskerUITests */,
+				D6E343A9265AAD6B00C4AA01 /* OpenInTusker */,
 				D6D4DDCD212518A000E1C4BB /* Products */,
 				D65A37F221472F300087646E /* Frameworks */,
 			);
@@ -1485,6 +1532,7 @@
 				D6D4DDEB212518A200E1C4BB /* TuskerUITests.xctest */,
 				D61099AB2144B0CC00432DC2 /* Pachyderm.framework */,
 				D61099B32144B0CC00432DC2 /* PachydermTests.xctest */,
+				D6E343A8265AAD6B00C4AA01 /* OpenInTusker.appex */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -1552,6 +1600,28 @@
 			path = TuskerUITests;
 			sourceTree = "<group>";
 		};
+		D6DEA0DB268400AF00FE896A /* Confirm Load More Cell */ = {
+			isa = PBXGroup;
+			children = (
+				D6DEA0DC268400C300FE896A /* ConfirmLoadMoreTableViewCell.swift */,
+				D6DEA0DD268400C300FE896A /* ConfirmLoadMoreTableViewCell.xib */,
+			);
+			path = "Confirm Load More Cell";
+			sourceTree = "<group>";
+		};
+		D6E343A9265AAD6B00C4AA01 /* OpenInTusker */ = {
+			isa = PBXGroup;
+			children = (
+				D6E343B5265AAD6B00C4AA01 /* OpenInTusker.entitlements */,
+				D6E343AA265AAD6B00C4AA01 /* Media.xcassets */,
+				D6E343AC265AAD6B00C4AA01 /* ActionViewController.swift */,
+				D6E343AE265AAD6B00C4AA01 /* MainInterface.storyboard */,
+				D6E343B1265AAD6B00C4AA01 /* Info.plist */,
+				D6E343B9265AAD8C00C4AA01 /* Action.js */,
+			);
+			path = OpenInTusker;
+			sourceTree = "<group>";
+		};
 		D6F1F84E2193B9BE00F5FE67 /* Caching */ = {
 			isa = PBXGroup;
 			children = (
@@ -1642,11 +1712,13 @@
 				D6D4DDCA212518A000E1C4BB /* Resources */,
 				D6F953E52125197500CF0F2B /* Embed Frameworks */,
 				D65F612C23AE957600F3CFD3 /* Embed debug-only frameworks */,
+				D6E3438F2659849800C4AA01 /* Embed App Extensions */,
 			);
 			buildRules = (
 			);
 			dependencies = (
 				D61099BF2144B0CC00432DC2 /* PBXTargetDependency */,
+				D6E343B3265AAD6B00C4AA01 /* PBXTargetDependency */,
 			);
 			name = Tusker;
 			packageProductDependencies = (
@@ -1696,14 +1768,31 @@
 			productReference = D6D4DDEB212518A200E1C4BB /* TuskerUITests.xctest */;
 			productType = "com.apple.product-type.bundle.ui-testing";
 		};
+		D6E343A7265AAD6B00C4AA01 /* OpenInTusker */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = D6E343B6265AAD6B00C4AA01 /* Build configuration list for PBXNativeTarget "OpenInTusker" */;
+			buildPhases = (
+				D6E343A4265AAD6B00C4AA01 /* Sources */,
+				D6E343A5265AAD6B00C4AA01 /* Frameworks */,
+				D6E343A6265AAD6B00C4AA01 /* Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = OpenInTusker;
+			productName = OpenInTusker;
+			productReference = D6E343A8265AAD6B00C4AA01 /* OpenInTusker.appex */;
+			productType = "com.apple.product-type.app-extension";
+		};
 /* End PBXNativeTarget section */
 
 /* Begin PBXProject section */
 		D6D4DDC4212518A000E1C4BB /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastSwiftUpdateCheck = 1200;
-				LastUpgradeCheck = 1020;
+				LastSwiftUpdateCheck = 1250;
+				LastUpgradeCheck = 1250;
 				ORGANIZATIONNAME = Shadowfacts;
 				TargetAttributes = {
 					D61099AA2144B0CC00432DC2 = {
@@ -1729,6 +1818,9 @@
 						LastSwiftMigration = 1020;
 						TestTargetID = D6D4DDCB212518A000E1C4BB;
 					};
+					D6E343A7265AAD6B00C4AA01 = {
+						CreatedOnToolsVersion = 12.5;
+					};
 				};
 			};
 			buildConfigurationList = D6D4DDC7212518A000E1C4BB /* Build configuration list for PBXProject "Tusker" */;
@@ -1760,6 +1852,7 @@
 				D6D4DDEA212518A200E1C4BB /* TuskerUITests */,
 				D61099AA2144B0CC00432DC2 /* Pachyderm */,
 				D61099B22144B0CC00432DC2 /* PachydermTests */,
+				D6E343A7265AAD6B00C4AA01 /* OpenInTusker */,
 			);
 		};
 /* End PBXProject section */
@@ -1810,6 +1903,7 @@
 				D6F2E966249E8BFD005846BB /* CrashReporterViewController.xib in Resources */,
 				D662AEF0263A3B880082A153 /* PollFinishedTableViewCell.xib in Resources */,
 				D6A4DCCD2553667800D9DE31 /* FastAccountSwitcherViewController.xib in Resources */,
+				D6DEA0DF268400C300FE896A /* ConfirmLoadMoreTableViewCell.xib in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -1827,6 +1921,16 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		D6E343A6265AAD6B00C4AA01 /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				D6E343BA265AAD8C00C4AA01 /* Action.js in Resources */,
+				D6E343AB265AAD6B00C4AA01 /* Media.xcassets in Resources */,
+				D6E343B0265AAD6B00C4AA01 /* MainInterface.storyboard in Resources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXResourcesBuildPhase section */
 
 /* Begin PBXShellScriptBuildPhase section */
@@ -1933,6 +2037,7 @@
 				D6412B0324AFF6A600F5412E /* TabBarScrollableViewController.swift in Sources */,
 				D6757A822157E8FA00721E32 /* XCBSession.swift in Sources */,
 				D6093FB725BE0CF3004811E6 /* HashtagHistoryView.swift in Sources */,
+				D6DEA0DE268400C300FE896A /* ConfirmLoadMoreTableViewCell.swift in Sources */,
 				D6EBF01723C55E0D00AE061B /* UISceneSession+MastodonController.swift in Sources */,
 				04DACE8C212CB14B009840C4 /* MainTabBarViewController.swift in Sources */,
 				D68E525D24A3E8F00054355A /* SearchViewController.swift in Sources */,
@@ -2065,6 +2170,7 @@
 				D626493823C0FD0000612E6E /* AllPhotosTableViewCell.swift in Sources */,
 				D627943B23A55BA600D38C68 /* NavigableTableViewCell.swift in Sources */,
 				D6333B792139AEFD00CE884A /* Date+TimeAgo.swift in Sources */,
+				D653F411267D1E32004E32B1 /* DiffableTimelineLikeTableViewController.swift in Sources */,
 				D6C82B5625C5F3F20017F1E6 /* ExpandThreadTableViewCell.swift in Sources */,
 				D686BBE324FBF8110068E6AA /* WrappedProgressView.swift in Sources */,
 				D620483423D3801D008A63EF /* LinkTextView.swift in Sources */,
@@ -2085,6 +2191,7 @@
 				D6AEBB432321685E00E5038B /* OpenInSafariActivity.swift in Sources */,
 				D6C693FE2162FEEA007D6A6D /* UIViewController+Children.swift in Sources */,
 				D64D0AB12128D9AE005A6F37 /* OnboardingViewController.swift in Sources */,
+				D67C1795266D57D10070F250 /* FastAccountSwitcherIndicatorView.swift in Sources */,
 				D627FF76217E923E00CC0648 /* DraftsManager.swift in Sources */,
 				D64F80E2215875CC00BEF393 /* XCBActionType.swift in Sources */,
 				04586B4322B301470021BD04 /* AppearancePrefsView.swift in Sources */,
@@ -2170,6 +2277,14 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		D6E343A4265AAD6B00C4AA01 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				D6E343AD265AAD6B00C4AA01 /* ActionViewController.swift in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXSourcesBuildPhase section */
 
 /* Begin PBXTargetDependency section */
@@ -2198,6 +2313,11 @@
 			target = D6D4DDCB212518A000E1C4BB /* Tusker */;
 			targetProxy = D6D4DDEC212518A200E1C4BB /* PBXContainerItemProxy */;
 		};
+		D6E343B3265AAD6B00C4AA01 /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			target = D6E343A7265AAD6B00C4AA01 /* OpenInTusker */;
+			targetProxy = D6E343B2265AAD6B00C4AA01 /* PBXContainerItemProxy */;
+		};
 /* End PBXTargetDependency section */
 
 /* Begin PBXVariantGroup section */
@@ -2209,6 +2329,14 @@
 			name = LaunchScreen.storyboard;
 			sourceTree = "<group>";
 		};
+		D6E343AE265AAD6B00C4AA01 /* MainInterface.storyboard */ = {
+			isa = PBXVariantGroup;
+			children = (
+				D6E343AF265AAD6B00C4AA01 /* Base */,
+			);
+			name = MainInterface.storyboard;
+			sourceTree = "<group>";
+		};
 		D6E57FA525C26FAB00341037 /* Localizable.stringsdict */ = {
 			isa = PBXVariantGroup;
 			children = (
@@ -2234,6 +2362,7 @@
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				INFOPLIST_FILE = Pachyderm/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
+				"IPHONEOS_DEPLOYMENT_TARGET[sdk=macosx*]" = 14.3;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -2264,6 +2393,7 @@
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				INFOPLIST_FILE = Pachyderm/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
+				"IPHONEOS_DEPLOYMENT_TARGET[sdk=macosx*]" = 14.3;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -2346,6 +2476,7 @@
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
@@ -2408,6 +2539,7 @@
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
@@ -2445,11 +2577,11 @@
 				CODE_SIGN_ENTITLEMENTS = Tusker/Tusker.entitlements;
 				CODE_SIGN_IDENTITY = "iPhone Developer";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 19;
+				CURRENT_PROJECT_VERSION = 20;
 				DEVELOPMENT_TEAM = V4WK9KR9U2;
 				INFOPLIST_FILE = Tusker/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 14.1;
-				"IPHONEOS_DEPLOYMENT_TARGET[sdk=macosx*]" = 14.0;
+				"IPHONEOS_DEPLOYMENT_TARGET[sdk=macosx*]" = 14.3;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -2461,6 +2593,10 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SUPPORTS_MACCATALYST = YES;
+				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
+				"SWIFT_ACTIVE_COMPILATION_CONDITIONS[sdk=iphoneos15.0]" = "SDK_IOS_15 $(inherited)";
+				"SWIFT_ACTIVE_COMPILATION_CONDITIONS[sdk=iphonesimulator15.0]" = "SDK_IOS_15 $(inherited)";
+				"SWIFT_ACTIVE_COMPILATION_CONDITIONS[sdk=macosx12.0]" = "SDK_IOS_15 $(inherited)";
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2,6";
 			};
@@ -2474,11 +2610,11 @@
 				CODE_SIGN_ENTITLEMENTS = Tusker/Tusker.entitlements;
 				CODE_SIGN_IDENTITY = "iPhone Developer";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 19;
+				CURRENT_PROJECT_VERSION = 20;
 				DEVELOPMENT_TEAM = V4WK9KR9U2;
 				INFOPLIST_FILE = Tusker/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 14.1;
-				"IPHONEOS_DEPLOYMENT_TARGET[sdk=macosx*]" = 14.0;
+				"IPHONEOS_DEPLOYMENT_TARGET[sdk=macosx*]" = 14.3;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -2576,6 +2712,60 @@
 			};
 			name = Release;
 		};
+		D6E343B7265AAD6B00C4AA01 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CODE_SIGN_ENTITLEMENTS = OpenInTusker/OpenInTusker.entitlements;
+				CODE_SIGN_IDENTITY = "iPhone Developer";
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 19;
+				DEVELOPMENT_TEAM = V4WK9KR9U2;
+				INFOPLIST_FILE = OpenInTusker/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 14.1;
+				"IPHONEOS_DEPLOYMENT_TARGET[sdk=macosx*]" = 14.3;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@executable_path/../../Frameworks",
+				);
+				MARKETING_VERSION = 2021.1;
+				PRODUCT_BUNDLE_IDENTIFIER = space.vaccor.Tusker.OpenInTusker;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SKIP_INSTALL = YES;
+				SUPPORTS_MACCATALYST = YES;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2,6";
+			};
+			name = Debug;
+		};
+		D6E343B8265AAD6B00C4AA01 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CODE_SIGN_ENTITLEMENTS = OpenInTusker/OpenInTusker.entitlements;
+				CODE_SIGN_IDENTITY = "iPhone Developer";
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 19;
+				DEVELOPMENT_TEAM = V4WK9KR9U2;
+				INFOPLIST_FILE = OpenInTusker/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 14.1;
+				"IPHONEOS_DEPLOYMENT_TARGET[sdk=macosx*]" = 14.3;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@executable_path/../../Frameworks",
+				);
+				MARKETING_VERSION = 2021.1;
+				PRODUCT_BUNDLE_IDENTIFIER = space.vaccor.Tusker.OpenInTusker;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SKIP_INSTALL = YES;
+				SUPPORTS_MACCATALYST = YES;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2,6";
+			};
+			name = Release;
+		};
 /* End XCBuildConfiguration section */
 
 /* Begin XCConfigurationList section */
@@ -2633,6 +2823,15 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
+		D6E343B6265AAD6B00C4AA01 /* Build configuration list for PBXNativeTarget "OpenInTusker" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				D6E343B7265AAD6B00C4AA01 /* Debug */,
+				D6E343B8265AAD6B00C4AA01 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 /* End XCConfigurationList section */
 
 /* Begin XCRemoteSwiftPackageReference section */
@@ -2649,7 +2848,7 @@
 			repositoryURL = "https://github.com/microsoft/plcrashreporter";
 			requirement = {
 				kind = upToNextMinorVersion;
-				minimumVersion = 1.7.0;
+				minimumVersion = 1.8.0;
 			};
 		};
 		D6B0539D23BD2BA300A066FA /* XCRemoteSwiftPackageReference "SheetController" */ = {

Tusker.xcodeproj/xcshareddata/xcschemes/Pachyderm.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1020"
+   LastUpgradeVersion = "1250"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -29,8 +29,6 @@
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
       </Testables>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -51,8 +49,6 @@
             ReferencedContainer = "container:Tusker.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"

Tusker.xcodeproj/xcshareddata/xcschemes/Tusker.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1020"
+   LastUpgradeVersion = "1250"
    version = "1.7">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -88,6 +88,10 @@
             argument = "-com.apple.CoreData.ConcurrencyDebug 1"
             isEnabled = "YES">
          </CommandLineArgument>
+         <CommandLineArgument
+            argument = "-UIFocusLoopDebuggerEnabled YES"
+            isEnabled = "YES">
+         </CommandLineArgument>
       </CommandLineArguments>
       <EnvironmentVariables>
          <EnvironmentVariable

Tusker.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -6,8 +6,8 @@
         "repositoryURL": "https://github.com/microsoft/plcrashreporter",
         "state": {
           "branch": null,
-          "revision": "6b7ca9a2faad6ea990ff60b0a3ee4fdf3db59150",
-          "version": "1.7.2"
+          "revision": "de6b8f9db4b2a0aa859a5507550a70548e4da936",
+          "version": "1.8.1"
         }
       },
       {

Tusker/AppDelegate.swift

@@ -65,6 +65,9 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         }
         
         switch type {
+        case .mainScene:
+            return "main-scene"
+        
         case .showConversation,
              .showTimeline,
              .checkNotifications,
@@ -76,9 +79,6 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
             
         case .newPost:
             return "compose"
-
-        default:
-            fatalError("no scene for activity type \(type)")
         }
     }
 }

Tusker/ComposeSceneDelegate.swift

@@ -17,21 +17,39 @@ class ComposeSceneDelegate: UIResponder, UIWindowSceneDelegate {
             return
         }
         
+        guard LocalData.shared.onboardingComplete else {
+            UIApplication.shared.requestSceneSessionDestruction(session, options: nil, errorHandler: nil)
+            return
+        }
+        
         let account: LocalData.UserAccountInfo
+        let controller: MastodonController
         let draft: Draft?
         
-        if let activity = connectionOptions.userActivities.first ?? session.stateRestorationActivity,
-           let activityAccount = UserActivityManager.getAccount(from: activity) {
-            account = activityAccount
-            draft = UserActivityManager.getDraft(from: activity)
+        if let activity = connectionOptions.userActivities.first ?? session.stateRestorationActivity {
+            if let activityAccount = UserActivityManager.getAccount(from: activity) {
+                account = activityAccount
+            } else {
+                // todo: this potentially changes the account for the draft, should show the same warning to user as in the drafts selection screen
+                account = LocalData.shared.getMostRecentAccount()!
+            }
+            
+            controller = MastodonController.getForAccount(account)
+            
+            if let activityDraft = UserActivityManager.getDraft(from: activity) {
+                draft = activityDraft
+            } else if let mentioning = activity.userInfo?["mentioning"] as? String {
+                draft = controller.createDraft(inReplyToID: nil, mentioningAcct: mentioning)
+            } else {
+                draft = nil
+            }
         } else {
             account = LocalData.shared.getMostRecentAccount()!
+            controller = MastodonController.getForAccount(account)
             draft = nil
         }
         
-        let controller = MastodonController.getForAccount(account)
         session.mastodonController = controller
-        
         controller.getOwnAccount()
         controller.getOwnInstance()
         

Tusker/Info.plist

@@ -69,6 +69,7 @@
 		<string>$(PRODUCT_BUNDLE_IDENTIFIER).activity.bookmarks</string>
 		<string>$(PRODUCT_BUNDLE_IDENTIFIER).activity.my-profile</string>
 		<string>$(PRODUCT_BUNDLE_IDENTIFIER).activity.show-profile</string>
+		<string>$(PRODUCT_BUNDLE_IDENTIFIER).activity.main-scene</string>
 	</array>
 	<key>UIApplicationSceneManifest</key>
 	<dict>

Tusker/MainSceneDelegate.swift

@@ -15,12 +15,15 @@ class MainSceneDelegate: UIResponder, UIWindowSceneDelegate {
     
     var window: UIWindow?
 
+    private var launchActivity: NSUserActivity?
+    
     func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
-        // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
-        // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
-        // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
         guard let windowScene = scene as? UIWindowScene else { return }
         
+        if let activity = connectionOptions.userActivities.first ?? session.stateRestorationActivity {
+            launchActivity = activity
+        }
+        
         window = UIWindow(windowScene: windowScene)
         
         if let report = AppDelegate.pendingCrashReport {
@@ -28,6 +31,9 @@ class MainSceneDelegate: UIResponder, UIWindowSceneDelegate {
             handlePendingCrashReport(report, session: session)
         } else {
             showAppOrOnboardingUI(session: session)
+            if connectionOptions.urlContexts.count > 0 {
+                self.scene(scene, openURLContexts: connectionOptions.urlContexts)
+            }
         }
 
         window!.makeKeyAndVisible()
@@ -50,20 +56,10 @@ class MainSceneDelegate: UIResponder, UIWindowSceneDelegate {
         if url.host == "x-callback-url" {
             _ = XCBManager.handle(url: url)
         } else if var components = URLComponents(url: url, resolvingAgainstBaseURL: false),
-            let tabBarController = window!.rootViewController as? MainTabBarViewController,
-            let exploreNavController = tabBarController.getTabController(tab: .explore) as? UINavigationController,
-            let exploreController = exploreNavController.viewControllers.first as? ExploreViewController {
-            
-            tabBarController.select(tab: .explore)
-            exploreNavController.popToRootViewController(animated: false)
-            
-            exploreController.loadViewIfNeeded()
-            exploreController.searchController.isActive = true
-            
+                  let rootViewController = window!.rootViewController as? TuskerRootViewController {
             components.scheme = "https"
-            let query = url.absoluteString
-            exploreController.searchController.searchBar.text = query
-            exploreController.resultsController.performSearch(query: query)
+            let query = components.string!
+            rootViewController.performSearch(query: query)
         }
     }
     
@@ -98,6 +94,14 @@ class MainSceneDelegate: UIResponder, UIWindowSceneDelegate {
         DraftsManager.save()
     }
     
+    func stateRestorationActivity(for scene: UIScene) -> NSUserActivity? {
+        if let mastodonController =  window?.windowScene?.session.mastodonController {
+            return UserActivityManager.mainSceneActivity(accountID: mastodonController.accountInfo!.id)
+        } else {
+            return nil
+        }
+    }
+    
     func sceneWillEnterForeground(_ scene: UIScene) {
         // Called as the scene transitions from the background to the foreground.
         // Use this method to undo the changes made on entering the background.
@@ -130,7 +134,14 @@ class MainSceneDelegate: UIResponder, UIWindowSceneDelegate {
     func showAppOrOnboardingUI(session: UISceneSession? = nil) {
         let session = session ?? window!.windowScene!.session
         if LocalData.shared.onboardingComplete {
-            let account = LocalData.shared.getMostRecentAccount()!
+            let account: LocalData.UserAccountInfo
+            if let activity = launchActivity,
+               let activityAccount = UserActivityManager.getAccount(from: activity) {
+                account = activityAccount
+            } else {
+                account = LocalData.shared.getMostRecentAccount()!
+            }
+            
             if session.mastodonController == nil {
                 session.mastodonController = MastodonController.getForAccount(account)
             }

Tusker/Models/CompositionAttachment.swift

@@ -8,7 +8,7 @@
 
 import Foundation
 import UIKit
-import MobileCoreServices
+import UniformTypeIdentifiers
 
 final class CompositionAttachment: NSObject, Codable, ObservableObject {
     static let typeIdentifier = "space.vaccor.Tusker.composition-attachment"
@@ -52,10 +52,10 @@ final class CompositionAttachment: NSObject, Codable, ObservableObject {
 
 extension CompositionAttachment: Identifiable {}
 
-private let imageType = kUTTypeImage as String
-private let mp4Type = kUTTypeMPEG4 as String
-private let quickTimeType = kUTTypeQuickTimeMovie as String
-private let dataType = kUTTypeData as String
+private let imageType = UTType.image.identifier
+private let mp4Type = UTType.mpeg4Movie.identifier
+private let quickTimeType = UTType.quickTimeMovie.identifier
+private let dataType = UTType.data.identifier
 
 extension CompositionAttachment: NSItemProviderWriting {
     static var writableTypeIdentifiersForItemProvider: [String] {
@@ -100,11 +100,11 @@ extension CompositionAttachment: NSItemProviderReading {
             return try PropertyListDecoder().decode(Self.self, from: data)
         } else if UIImage.readableTypeIdentifiersForItemProvider.contains(typeIdentifier), let image = try? UIImage.object(withItemProviderData: data, typeIdentifier: typeIdentifier) {
             return CompositionAttachment(data: .image(image)) as! Self
-        } else if typeIdentifier == mp4Type || typeIdentifier == quickTimeType {
+        } else if let type = UTType(typeIdentifier), type == .mpeg4Movie || type == .quickTimeMovie {
             let temporaryDirectoryURL = URL(fileURLWithPath: NSTemporaryDirectory(), isDirectory: true)
             let temporaryFileName = ProcessInfo().globallyUniqueString
-            let fileExt = UTTypeCopyPreferredTagWithClass(typeIdentifier as CFString, kUTTagClassFilenameExtension)!
-            let temporaryFileURL = temporaryDirectoryURL.appendingPathComponent(temporaryFileName).appendingPathExtension(fileExt.takeUnretainedValue() as String)
+            let fileExt = type.preferredFilenameExtension!
+            let temporaryFileURL = temporaryDirectoryURL.appendingPathComponent(temporaryFileName).appendingPathExtension(fileExt)
             try data.write(to: temporaryFileURL)
             return CompositionAttachment(data: .video(temporaryFileURL)) as! Self
         } else if NSURL.readableTypeIdentifiersForItemProvider.contains(typeIdentifier), let url = try? NSURL.object(withItemProviderData: data, typeIdentifier: typeIdentifier) as URL {

Tusker/Models/CompositionAttachmentData.swift

@@ -8,7 +8,7 @@
 
 import UIKit
 import Photos
-import MobileCoreServices
+import UniformTypeIdentifiers
 import PencilKit
 
 enum CompositionAttachmentData {
@@ -74,7 +74,7 @@ enum CompositionAttachmentData {
                         data = context.jpegRepresentation(of: image, colorSpace: colorSpace, options: [:])!
                         mimeType = "image/jpeg"
                     } else {
-                        mimeType = UTTypeCopyPreferredTagWithClass(dataUTI as CFString, kUTTagClassMIMEType)!.takeRetainedValue() as String
+                        mimeType = UTType(dataUTI)!.preferredMIMEType!
                     }
     
                     completion(data, mimeType)

Tusker/Preferences/Preferences.swift

@@ -63,6 +63,7 @@ class Preferences: Codable, ObservableObject {
         self.showFavoriteAndReblogCounts = try container.decode(Bool.self, forKey: .showFavoriteAndReblogCounts)
         self.defaultNotificationsMode = try container.decode(NotificationsMode.self, forKey: .defaultNotificationsType)
         self.grayscaleImages = try container.decodeIfPresent(Bool.self, forKey: .grayscaleImages) ?? false
+        self.disableInfiniteScrolling = try container.decodeIfPresent(Bool.self, forKey: .disableInfiniteScrolling) ?? false
         
         self.silentActions = try container.decode([String: Permission].self, forKey: .silentActions)
         self.statusContentType = try container.decode(StatusContentType.self, forKey: .statusContentType)
@@ -97,6 +98,7 @@ class Preferences: Codable, ObservableObject {
         try container.encode(showFavoriteAndReblogCounts, forKey: .showFavoriteAndReblogCounts)
         try container.encode(defaultNotificationsMode, forKey: .defaultNotificationsType)
         try container.encode(grayscaleImages, forKey: .grayscaleImages)
+        try container.encode(disableInfiniteScrolling, forKey: .disableInfiniteScrolling)
         
         try container.encode(silentActions, forKey: .silentActions)
         try container.encode(statusContentType, forKey: .statusContentType)
@@ -133,6 +135,7 @@ class Preferences: Codable, ObservableObject {
     @Published var showFavoriteAndReblogCounts = true
     @Published var defaultNotificationsMode = NotificationsMode.allNotifications
     @Published var grayscaleImages = false
+    @Published var disableInfiniteScrolling = false
     
     // MARK: Advanced
     @Published var silentActions: [String: Permission] = [:]
@@ -165,6 +168,7 @@ class Preferences: Codable, ObservableObject {
         case showFavoriteAndReblogCounts
         case defaultNotificationsType
         case grayscaleImages
+        case disableInfiniteScrolling
         
         case silentActions
         case statusContentType

Tusker/Screens/Asset Picker/AssetCollectionViewController.swift

@@ -12,7 +12,7 @@ import Photos
 private let reuseIdentifier = "assetCell"
 private let cameraReuseIdentifier = "showCameraCell"
 
-protocol AssetCollectionViewControllerDelegate: class {
+protocol AssetCollectionViewControllerDelegate: AnyObject {
     func shouldSelectAsset(_ asset: PHAsset) -> Bool
     func didSelectAssets(_ assets: [PHAsset])
     func captureFromCamera()
@@ -70,6 +70,7 @@ class AssetCollectionViewController: UICollectionViewController {
 
         collectionView.alwaysBounceVertical = true
         collectionView.allowsMultipleSelection = true
+        collectionView.allowsSelection = true
         
         collectionView.register(UINib(nibName: "AssetCollectionViewCell", bundle: .main), forCellWithReuseIdentifier: reuseIdentifier)
         collectionView.register(UINib(nibName: "ShowCameraCollectionViewCell", bundle: .main), forCellWithReuseIdentifier: cameraReuseIdentifier)
@@ -98,8 +99,6 @@ class AssetCollectionViewController: UICollectionViewController {
             }
         })
         
-        setEditing(true, animated: false)
-        
         updateItemsSelectedCount()
 
         if let singleFingerPanGesture = collectionView.gestureRecognizers?.first(where: {

Tusker/Screens/Asset Picker/AssetPickerViewController.swift

@@ -9,7 +9,7 @@
 import UIKit
 import Photos
 
-protocol AssetPickerViewControllerDelegate: class {
+protocol AssetPickerViewControllerDelegate: AnyObject {
     func assetPicker(_ assetPicker: AssetPickerViewController, shouldAllowAssetOfType type: CompositionAttachmentData.AttachmentType) -> Bool
     func assetPicker(_ assetPicker: AssetPickerViewController, didSelectAttachments attachments: [CompositionAttachmentData])
 }

Tusker/Screens/Attachment Gallery/GalleryViewController.swift

@@ -51,8 +51,14 @@ class GalleryViewController: UIPageViewController, UIPageViewControllerDataSourc
     }
     var dismissInteractionController: LargeImageInteractionController?
     
+    var isInteractivelyAnimatingDismissal: Bool = false {
+        didSet {
+            setNeedsStatusBarAppearanceUpdate()
+        }
+    }
+    
     override var prefersStatusBarHidden: Bool {
-        return true
+        return !isInteractivelyAnimatingDismissal
     }
     override var preferredStatusBarUpdateAnimation: UIStatusBarAnimation {
         return .none

Tusker/Screens/Compose/ComposeAttachmentRow.swift

@@ -41,6 +41,16 @@ struct ComposeAttachmentRow: View {
                             Label("Recognize Text", systemImage: "doc.text.viewfinder")
                         }
                     }
+                    
+                    if #available(iOS 15.0, *) {
+                        Button(action: self.removeAttachment) {
+                            Label("Delete", systemImage: "trash")
+                        }.foregroundStyle(.red)
+                    } else {
+                        Button(action: self.removeAttachment) {
+                            Label("Delete", systemImage: "trash")
+                        }
+                    }
                 }
             
             switch mode {
@@ -126,7 +136,9 @@ struct ComposeAttachmentRow: View {
     }
     
     private func removeAttachment() {
-        draft.attachments.removeAll { $0.id == attachment.id }
+        withAnimation {
+            draft.attachments.removeAll { $0.id == attachment.id }
+        }
     }
     
     private func editDrawing() {

Tusker/Screens/Compose/ComposeAttachmentsList.swift

@@ -69,6 +69,7 @@ struct ComposeAttachmentsList: View {
             .frame(height: cellHeight / 2)
             .listRowInsets(EdgeInsets(top: cellPadding / 2, leading: cellPadding / 2, bottom: cellPadding / 2, trailing: cellPadding / 2))
         }
+        .listStyle(PlainListStyle())
         .frame(height: totalListHeight)
         .onAppear(perform: self.didAppear)
         .onReceive(draft.$attachments, perform: self.attachmentsChanged)

Tusker/Screens/Compose/ComposeDrawingViewController.swift

@@ -9,7 +9,7 @@
 import UIKit
 import PencilKit
 
-protocol ComposeDrawingViewControllerDelegate: class {
+protocol ComposeDrawingViewControllerDelegate: AnyObject {
     func composeDrawingViewControllerClose(_ drawingController: ComposeDrawingViewController)
     func composeDrawingViewController(_ drawingController: ComposeDrawingViewController, saveDrawing drawing: PKDrawing)
 }
@@ -23,6 +23,8 @@ class ComposeDrawingViewController: UIViewController {
     private(set) var undoBarButtonItem: UIBarButtonItem!
     private(set) var redoBarButtonItem: UIBarButtonItem!
     
+    private var toolPicker: PKToolPicker!
+    
     private var initialDrawing: PKDrawing?
 
     init() {
@@ -70,26 +72,21 @@ class ComposeDrawingViewController: UIViewController {
             canvasView.topAnchor.constraint(equalTo: view.topAnchor),
             canvasView.bottomAnchor.constraint(equalTo: view.bottomAnchor)
         ])
+        
+        toolPicker = PKToolPicker()
+        toolPicker.setVisible(true, forFirstResponder: canvasView)
+        toolPicker.addObserver(canvasView)
+        toolPicker.addObserver(self)
+        
+        updateLayout(for: toolPicker)
+        canvasView.becomeFirstResponder()
     }
     
-    override func viewWillAppear(_ animated: Bool) {
-        super.viewWillAppear(animated)
+    override func viewDidAppear(_ animated: Bool) {
+        super.viewDidAppear(animated)
         
-        // todo: should the PKToolPicker be owned by this VC or something else?
-        if let window = parent?.view.window, let toolPicker = PKToolPicker.shared(for: window) {
-            toolPicker.setVisible(true, forFirstResponder: canvasView)
-            toolPicker.addObserver(canvasView)
-            toolPicker.addObserver(self)
-            
-            updateLayout(for: toolPicker)
-            canvasView.becomeFirstResponder()
-            
-            // wait until the next run loop iteration so that the canvas view has become first responder and it's undo manager exists
-            DispatchQueue.main.async {
-                NotificationCenter.default.addObserver(self, selector: #selector(self.updateUndoRedoButtonState), name: .NSUndoManagerDidUndoChange, object: self.undoManager!)
-                NotificationCenter.default.addObserver(self, selector: #selector(self.updateUndoRedoButtonState), name: .NSUndoManagerDidRedoChange, object: self.undoManager!)
-            }
-        }
+        NotificationCenter.default.addObserver(self, selector: #selector(self.updateUndoRedoButtonState), name: .NSUndoManagerDidUndoChange, object: self.undoManager!)
+        NotificationCenter.default.addObserver(self, selector: #selector(self.updateUndoRedoButtonState), name: .NSUndoManagerDidRedoChange, object: self.undoManager!)
     }
 
     func updateLayout(for toolPicker: PKToolPicker) {

Tusker/Screens/Compose/ComposeHostingController.swift

@@ -11,7 +11,7 @@ import Combine
 import Pachyderm
 import PencilKit
 
-protocol ComposeHostingControllerDelegate: class {
+protocol ComposeHostingControllerDelegate: AnyObject {
     func dismissCompose(mode: ComposeUIState.DismissMode) -> Bool
 }
 
@@ -245,6 +245,25 @@ extension ComposeHostingController: ComposeUIStateDelegate {
     }
     
     func presentAssetPickerSheet() {
+        #if SDK_IOS_15
+        if #available(iOS 15.0, *) {
+            let picker = AssetPickerViewController()
+            picker.assetPickerDelegate = self
+            picker.modalPresentationStyle = .pageSheet
+            picker.overrideUserInterfaceStyle = .dark
+            let sheet = picker.sheetPresentationController!
+            sheet.detents = [.medium(), .large()]
+            sheet.prefersEdgeAttachedInCompactHeight = true
+            self.present(picker, animated: true)
+        } else {
+            presentOldAssetPickerSheet()
+        }
+        #else
+        presentOldAssetPickerSheet()
+        #endif
+    }
+    
+    private func presentOldAssetPickerSheet() {
         let sheetContainer = AssetPickerSheetContainerViewController()
         sheetContainer.assetPicker.assetPickerDelegate = self
         self.present(sheetContainer, animated: true)
@@ -288,7 +307,9 @@ extension ComposeHostingController: AssetPickerViewControllerDelegate {
         let attachments = attachments.map {
             CompositionAttachment(data: $0)
         }
-        draft.attachments.append(contentsOf: attachments)
+        withAnimation {
+            draft.attachments.append(contentsOf: attachments)
+        }
     }
 }
 

Tusker/Screens/Compose/ComposePollView.swift

@@ -46,6 +46,7 @@ struct ComposePollView: View {
                 }
                 .accentColor(buttonForegroundColor)
                 .background(Circle().foregroundColor(buttonBackgroundColor))
+                .hoverEffect()
             }
             
             ForEach(Array(poll.options.enumerated()), id: \.element.id) { (e) in
@@ -161,6 +162,7 @@ struct ComposePollOption: View {
             }
             .foregroundColor(poll.options.count == 1 ? .gray : .red)
             .disabled(poll.options.count == 1)
+            .hoverEffect()
         }
     }
     

Tusker/Screens/Compose/ComposeReplyView.swift

@@ -23,21 +23,21 @@ struct ComposeReplyView: View {
         HStack(alignment: .top, spacing: horizSpacing) {
             GeometryReader(content: self.replyAvatarImage)
                 .frame(width: 50)
-            
+
             VStack(alignment: .leading, spacing: 0) {
                 HStack {
                     AccountDisplayNameLabel(account: status.account, fontSize: 17)
                         .lineLimit(1)
                         .layoutPriority(1)
-                    
+
                     Text(verbatim: "@\(status.account.acct)")
                         .font(.system(size: 17, weight: .light))
                         .foregroundColor(.secondary)
                         .lineLimit(1)
-                    
+
                     Spacer()
                 }
-                
+
                 ComposeReplyContentView(status: status) { (newHeight) in
                     self.contentHeight = newHeight
                 }
@@ -52,9 +52,20 @@ struct ComposeReplyView: View {
     private func replyAvatarImage(geometry: GeometryProxy) -> some View {
         // using named coordinate spaces produces an incorrect scroll offset on iOS 13,
         // so simply compare the geometry inside and outside the scroll view in the global coordinate space
-        var scrollOffset = outerMinY - geometry.frame(in: .global).minY
-        scrollOffset += stackPadding
-        let offset = min(max(scrollOffset, 0), geometry.size.height - 50 - stackPadding)
+        let scrollOffset = outerMinY - geometry.frame(in: .global).minY
+        
+        // add stackPadding so that the image is always at least stackPadding away from the top
+        var offset = scrollOffset + stackPadding
+        
+        // offset can never be less than 0 (i.e., above the top of the in-reply-to content)
+        offset = max(offset, 0)
+        
+        // subtract 50, because we care about where the bottom of the view is but the offset is relative to the top of the view
+        let maxOffset = (contentHeight ?? 0) - 50
+        
+        // once you scroll past the in-reply-to-content, the bottom of the avatar should be pinned to the bottom of the content
+        offset = min(offset, maxOffset)
+        
         return ComposeAvatarImageView(url: status.account.avatar)
             .frame(width: 50, height: 50)
             .cornerRadius(preferences.avatarStyle.cornerRadiusFraction * 50)

Tusker/Screens/Compose/ComposeTextViewCaretScrolling.swift

@@ -8,7 +8,7 @@
 
 import UIKit
 
-protocol ComposeTextViewCaretScrolling: class {
+protocol ComposeTextViewCaretScrolling: AnyObject {
     var caretScrollPositionAnimator: UIViewPropertyAnimator? { get set }
 }
 

Tusker/Screens/Compose/ComposeUIState.swift

@@ -8,7 +8,7 @@
 
 import SwiftUI
 
-protocol ComposeUIStateDelegate: class {
+protocol ComposeUIStateDelegate: AnyObject {
     var assetPickerDelegate: AssetPickerViewControllerDelegate? { get }
     
     func dismissCompose(mode: ComposeUIState.DismissMode)
@@ -60,6 +60,6 @@ extension ComposeUIState {
     }
 }
 
-protocol ComposeAutocompleteHandler: class {
+protocol ComposeAutocompleteHandler: AnyObject {
     func autocomplete(with string: String)
 }

Tusker/Screens/Compose/ComposeView.swift

@@ -58,8 +58,10 @@ struct ComposeView: View {
                 }
             }
             
-            // can't use SwiftUI.ProgressView because there's no UIProgressView.Style.bar equivalent, see FB8587149
-            WrappedProgressView(value: postProgress, total: postTotalProgress)
+            if postProgress > 0 {
+                // can't use SwiftUI.ProgressView because there's no UIProgressView.Style.bar equivalent, see FB8587149
+                WrappedProgressView(value: postProgress, total: postTotalProgress)
+            }
             
             autocompleteSuggestions
         }

Tusker/Screens/Compose/EmojiPickerCollectionViewController.swift

@@ -11,7 +11,7 @@ import Pachyderm
 
 private let reuseIdentifier = "EmojiCell"
 
-protocol EmojiPickerCollectionViewControllerDelegate: class {
+protocol EmojiPickerCollectionViewControllerDelegate: AnyObject {
     func selectedEmoji(_ emoji: Emoji)
 }
 

Tusker/Screens/Conversation/ConversationTableViewController.swift

@@ -131,7 +131,31 @@ class ConversationTableViewController: EnhancedTableViewController {
         let initialImage = showStatusesAutomatically ? ConversationTableViewController.hidePostsImage : ConversationTableViewController.showPostsImage
         visibilityBarButtonItem = UIBarButtonItem(image: initialImage, style: .plain, target: self, action: #selector(toggleVisibilityButtonPressed))
         navigationItem.rightBarButtonItem = visibilityBarButtonItem
-
+        
+        loadMainStatus()
+    }
+    
+    private func loadMainStatus() {
+        if let mainStatus = mastodonController.persistentContainer.status(for: mainStatusID) {
+            self.mainStatusLoaded(mainStatus)
+        } else {
+            let request = Client.getStatus(id: mainStatusID)
+            mastodonController.run(request) { (response) in
+                switch response {
+                case let .success(status, _):
+                    let viewContext = self.mastodonController.persistentContainer.viewContext
+                    self.mastodonController.persistentContainer.addOrUpdate(status: status, incrementReferenceCount: false, context: viewContext) { (statusMO) in
+                        self.mainStatusLoaded(statusMO)
+                    }
+                    
+                case .failure(_):
+                    fatalError()
+                }
+            }
+        }
+    }
+    
+    private func mainStatusLoaded(_ mainStatus: StatusMO) {
         let mainStatusItem = Item.status(id: mainStatusID, state: mainStatusState)
         
         var snapshot = NSDiffableDataSourceSnapshot<Section, Item>()
@@ -139,12 +163,10 @@ class ConversationTableViewController: EnhancedTableViewController {
         snapshot.appendItems([mainStatusItem], toSection: .statuses)
         dataSource.apply(snapshot, animatingDifferences: false)
 
-        guard let mainStatus = self.mastodonController.persistentContainer.status(for: self.mainStatusID) else {
-            fatalError("Missing cached status \(self.mainStatusID)")
-        }
         let mainStatusInReplyToID = mainStatus.inReplyToID
         mainStatus.incrementReferenceCount()
 
+        // todo: it would be nice to cache these contexts
         let request = Status.getContext(mainStatusID)
         mastodonController.run(request) { response in
             guard case let .success(context, _) = response else { fatalError() }
@@ -304,7 +326,16 @@ class ConversationTableViewController: EnhancedTableViewController {
     }
     
     @objc func toggleVisibilityButtonPressed() {
+        #if SDK_IOS_15
+        if #available(iOS 15.0, *) {
+            visibilityBarButtonItem.isSelected = !visibilityBarButtonItem.isSelected
+            showStatusesAutomatically = visibilityBarButtonItem.isSelected
+        } else {
+            showStatusesAutomatically = !showStatusesAutomatically
+        }
+        #else
         showStatusesAutomatically = !showStatusesAutomatically
+        #endif
         
         let snapshot = dataSource.snapshot()
         for case let .status(id: _, state: state) in snapshot.itemIdentifiers where state.collapsible == true {

Tusker/Screens/Drafts/DraftsTableViewController.swift

@@ -8,7 +8,7 @@
 
 import UIKit
 
-protocol DraftsTableViewControllerDelegate: class {
+protocol DraftsTableViewControllerDelegate: AnyObject {
     func draftSelectionCanceled()
     func shouldSelectDraft(_ draft: Draft, completion: @escaping (Bool) -> Void)
     func draftSelected(_ draft: Draft)

Tusker/Screens/Fast Account Switcher/FastAccountSwitcherViewController.swift

@@ -8,7 +8,7 @@
 
 import UIKit
 
-protocol FastAccountSwitcherViewControllerDelegate: class {
+protocol FastAccountSwitcherViewControllerDelegate: AnyObject {
     func fastAccountSwitcher(_ fastAccountSwitcher: FastAccountSwitcherViewController, triggerZoneContains point: CGPoint) -> Bool
 }
 

Tusker/Screens/Large Image/LargeImageViewController.swift

@@ -51,8 +51,14 @@ class LargeImageViewController: UIViewController, UIScrollViewDelegate, LargeIma
     private var prevZoomScale: CGFloat?
     private var isGrayscale = false
     
+    var isInteractivelyAnimatingDismissal: Bool = false {
+        didSet {
+            setNeedsStatusBarAppearanceUpdate()
+        }
+    }
+    
     override var prefersStatusBarHidden: Bool {
-        return true
+        return !isInteractivelyAnimatingDismissal
     }
     override var preferredStatusBarUpdateAnimation: UIStatusBarAnimation {
         return .none

Tusker/Screens/Large Image/LoadingLargeImageViewController.swift

@@ -43,8 +43,14 @@ class LoadingLargeImageViewController: UIViewController, LargeImageAnimatableVie
     var animationGifData: Data? { largeImageVC?.animationGifData }
     var dismissInteractionController: LargeImageInteractionController?
     
+    var isInteractivelyAnimatingDismissal: Bool = false {
+        didSet {
+            setNeedsStatusBarAppearanceUpdate()
+        }
+    }
+    
     override var prefersStatusBarHidden: Bool {
-        return true
+        return !isInteractivelyAnimatingDismissal
     }
     override var preferredStatusBarUpdateAnimation: UIStatusBarAnimation {
         return .none

Tusker/Screens/Large Image/Transitions/LargeImageExpandAnimationController.swift

@@ -15,6 +15,7 @@ protocol LargeImageAnimatableViewController: UIViewController {
     var animationImage: UIImage? { get }
     var animationGifData: Data? { get }
     var dismissInteractionController: LargeImageInteractionController? { get }
+    var isInteractivelyAnimatingDismissal: Bool { get set }
 }
 
 extension LargeImageAnimatableViewController {
@@ -74,7 +75,7 @@ class LargeImageExpandAnimationController: NSObject, UIViewControllerAnimatedTra
         toVC.largeImageController?.contentView.isHidden = true
         toVC.largeImageController?.setControlsVisible(false, animated: false)
 
-        var finalFrameSize = finalVCFrame.inset(by: fromVC.view.safeAreaInsets).size
+        var finalFrameSize = finalVCFrame.inset(by: toVC.view.safeAreaInsets).size
         let newWidth = finalFrameSize.width / image.size.width
         let newHeight = finalFrameSize.height / image.size.height
         if newHeight < newWidth {

Tusker/Screens/Large Image/Transitions/LargeImageInteractionController.swift

@@ -14,9 +14,9 @@ class LargeImageInteractionController: UIPercentDrivenInteractiveTransition {
     var direction: CGFloat?
     
     var shouldCompleteTransition = false
-    private weak var viewController: UIViewController!
+    private weak var viewController: LargeImageAnimatableViewController!
     
-    init(viewController: UIViewController) {
+    init(viewController: LargeImageAnimatableViewController) {
         super.init()
         self.viewController = viewController
         let panRecognizer = UIPanGestureRecognizer(target: self, action: #selector(handleGesture(_:)))
@@ -42,6 +42,7 @@ class LargeImageInteractionController: UIPercentDrivenInteractiveTransition {
             viewController.dismiss(animated: true)
         case .changed:
             shouldCompleteTransition = progress > 0.5 || velocity > 1000
+            viewController.isInteractivelyAnimatingDismissal = progress > 0.1
             update(progress)
         case .cancelled:
             inProgress = false
@@ -59,4 +60,9 @@ class LargeImageInteractionController: UIPercentDrivenInteractiveTransition {
         }
     }
     
+    override func cancel() {
+        super.cancel()
+        viewController.isInteractivelyAnimatingDismissal = false
+    }
+    
 }

Tusker/Screens/Lists/ListTimelineViewController.swift

@@ -58,7 +58,7 @@ class ListTimelineViewController: TimelineTableViewController {
         dismiss(animated: true)
         
         // todo: show loading indicator
-        reloadInitialItems()
+        reloadInitial()
     }
 
 }

Tusker/Screens/Main/AccountSwitchingContainerViewController.swift

@@ -71,14 +71,21 @@ extension AccountSwitchingContainerViewController {
 
 extension AccountSwitchingContainerViewController: TuskerRootViewController {
     func presentCompose() {
+        loadViewIfNeeded()
         root.presentCompose()
     }
     
     func select(tab: MainTabBarViewController.Tab) {
+        loadViewIfNeeded()
         root.select(tab: tab)
     }
     
     func getTabController(tab: MainTabBarViewController.Tab) -> UIViewController? {
-        root.getTabController(tab: tab)
+        loadViewIfNeeded()
+        return root.getTabController(tab: tab)
+    }
+    
+    func performSearch(query: String) {
+        root.performSearch(query: query)
     }
 }

Tusker/Screens/Main/MainSidebarViewController.swift

@@ -9,7 +9,7 @@
 import UIKit
 import Pachyderm
 
-protocol MainSidebarViewControllerDelegate: class {
+protocol MainSidebarViewControllerDelegate: AnyObject {
     func sidebarRequestPresentCompose(_ sidebarViewController: MainSidebarViewController)
     func sidebar(_ sidebarViewController: MainSidebarViewController, didSelectItem item: MainSidebarViewController.Item)
 }
@@ -48,7 +48,7 @@ class MainSidebarViewController: UIViewController {
     
     private(set) var previouslySelectedItem: Item?
     var selectedItem: Item? {
-        guard let indexPath = collectionView.indexPathsForSelectedItems?.first else {
+        guard let indexPath = collectionView?.indexPathsForSelectedItems?.first else {
             return nil
         }
         return dataSource.itemIdentifier(for: indexPath)
@@ -448,6 +448,20 @@ extension MainSidebarViewController: UICollectionViewDelegate {
             sidebarDelegate?.sidebar(self, didSelectItem: item)
         }
     }
+    
+    @available(iOS 15.0, *)
+    func collectionView(_ collectionView: UICollectionView, selectionFollowsFocusForItemAt indexPath: IndexPath) -> Bool {
+        guard let item = dataSource.itemIdentifier(for: indexPath) else {
+            return true
+        }
+        // don't immediately select items that present VCs when the they're focused, only when deliberately selected
+        switch item {
+        case .tab(.compose), .addList, .addSavedHashtag, .addSavedInstance:
+            return false
+        default:
+            return true
+        }
+    }
 }
 
 extension MainSidebarViewController: UICollectionViewDragDelegate {

Tusker/Screens/Main/MainSplitViewController.swift

@@ -19,6 +19,10 @@ class MainSplitViewController: UISplitViewController {
     
     private var tabBarViewController: MainTabBarViewController!
     
+    private var secondaryNavController: UINavigationController! {
+        viewController(for: .secondary) as? UINavigationController
+    }
+    
     override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
         if UIDevice.current.userInterfaceIdiom == .phone {
             return .portrait
@@ -67,8 +71,7 @@ class MainSplitViewController: UISplitViewController {
     }
     
     func select(item: MainSidebarViewController.Item) {
-        let nav = viewController(for: .secondary) as! UINavigationController
-        nav.viewControllers = getOrCreateNavigationStack(item: item)
+        secondaryNavController.viewControllers = getOrCreateNavigationStack(item: item)
     }
     
     func getOrCreateNavigationStack(item: MainSidebarViewController.Item) -> [UIViewController] {
@@ -109,8 +112,7 @@ extension MainSplitViewController: UISplitViewControllerDelegate {
     private func transferNavigationStack(from item: MainSidebarViewController.Item, to destination: UINavigationController, dropFirst: Bool = false, append: Bool = false) {
         var itemNavStack: [UIViewController]
         if item == sidebar.selectedItem {
-            let detailNav = viewController(for: .secondary) as! UINavigationController
-            itemNavStack = detailNav.viewControllers
+            itemNavStack = secondaryNavController.viewControllers
         } else {
             itemNavStack = navigationStacks[item] ?? []
             navigationStacks.removeValue(forKey: item)
@@ -190,8 +192,7 @@ extension MainSplitViewController: UISplitViewControllerDelegate {
             // Make sure viewDidLoad is called so that the searchController/resultsController have been initialized
             explore.loadViewIfNeeded()
             
-            let nav = viewController(for: .secondary) as! UINavigationController
-            let search = nav.viewControllers.first as! SearchViewController
+            let search = secondaryNavController.viewControllers.first as! SearchViewController
             // Copy the search query from the search VC to the Explore VC's search controller.
             let query = search.searchController.searchBar.text ?? ""
             explore.searchController.searchBar.text = query
@@ -318,9 +319,8 @@ extension MainSplitViewController: MainSidebarViewControllerDelegate {
     }
     
     func sidebar(_ sidebarViewController: MainSidebarViewController, didSelectItem item: MainSidebarViewController.Item) {
-        let nav = viewController(for: .secondary) as! UINavigationController
         if let previous = sidebar.previouslySelectedItem {
-            navigationStacks[previous] = nav.viewControllers
+            navigationStacks[previous] = secondaryNavController.viewControllers
         }
         select(item: item)
     }
@@ -353,10 +353,17 @@ fileprivate extension MainSidebarViewController.Item {
 
 extension MainSplitViewController: TuskerRootViewController {
     @objc func presentCompose() {
-        let vc = ComposeHostingController(mastodonController: mastodonController)
-        let nav = EnhancedNavigationViewController(rootViewController: vc)
-        nav.presentationController?.delegate = vc
-        present(nav, animated: true)
+        if #available(iOS 15.0, *), UIDevice.current.userInterfaceIdiom == .pad || UIDevice.current.userInterfaceIdiom == .mac {
+            let compose = UserActivityManager.newPostActivity(mentioning: nil, accountID: mastodonController.accountInfo!.id)
+            let options = UIWindowScene.ActivationRequestOptions()
+            options.preferredPresentationStyle = .prominent
+            UIApplication.shared.requestSceneSessionActivation(nil, userActivity: compose, options: options, errorHandler: nil)
+        } else {
+            let vc = ComposeHostingController(mastodonController: mastodonController)
+            let nav = EnhancedNavigationViewController(rootViewController: vc)
+            nav.presentationController?.delegate = vc
+            present(nav, animated: true)
+        }
     }
     
     func select(tab: MainTabBarViewController.Tab) {
@@ -366,8 +373,15 @@ extension MainSplitViewController: TuskerRootViewController {
             if tab == .compose {
                 presentCompose()
             } else {
-                select(item: .tab(tab))
-                sidebar.select(item: .tab(tab), animated: false)
+                if presentedViewController != nil {
+                    dismiss(animated: true) {
+                        self.select(item: .tab(tab))
+                        self.sidebar.select(item: .tab(tab), animated: false)
+                    }
+                } else {
+                    select(item: .tab(tab))
+                    sidebar.select(item: .tab(tab), animated: false)
+                }
             }
         }
     }
@@ -379,12 +393,43 @@ extension MainSplitViewController: TuskerRootViewController {
             if tab == .compose {
                 return nil
             } else if case .tab(tab) = sidebar.selectedItem {
-                return viewController(for: .secondary)
+                return secondaryNavController
             } else {
                 return nil
             }
         }
     }
+    
+    func performSearch(query: String) {
+        guard traitCollection.horizontalSizeClass != .compact else {
+            // ensure the tab bar VC is loaded
+            loadViewIfNeeded()
+            tabBarViewController.performSearch(query: query)
+            return
+        }
+        
+        if sidebar.selectedItem != .search {
+            select(item: .search)
+        }
+        
+        guard let searchViewController = secondaryNavController.viewControllers.first as? SearchViewController else {
+            return
+        }
+        
+        secondaryNavController.popToRootViewController(animated: false)
+        
+        if searchViewController.isViewLoaded {
+            DispatchQueue.main.async {
+                searchViewController.searchController.isActive = true
+            }
+        } else {
+            searchViewController.searchControllerStatusOnAppearance = true
+            searchViewController.loadViewIfNeeded()
+        }
+        
+        searchViewController.searchController.searchBar.text = query
+        searchViewController.resultsController.performSearch(query: query)
+    }
 }
 
 extension MainSplitViewController: BackgroundableViewController {

Tusker/Screens/Main/MainTabBarViewController.swift

@@ -7,7 +7,6 @@
 //
 
 import UIKit
-import SwiftUI
 
 class MainTabBarViewController: UITabBarController, UITabBarControllerDelegate {
     
@@ -16,6 +15,9 @@ class MainTabBarViewController: UITabBarController, UITabBarControllerDelegate {
     private var composePlaceholder: UIViewController!
     private var fastAccountSwitcher: FastAccountSwitcherViewController!
     
+    private var fastSwitcherIndicator: FastAccountSwitcherIndicatorView!
+    private var fastSwitcherConstraints: [NSLayoutConstraint] = []
+    
     var selectedTab: Tab {
         return Tab(rawValue: selectedIndex)!
     }
@@ -71,9 +73,62 @@ class MainTabBarViewController: UITabBarController, UITabBarControllerDelegate {
         tapRecognizer.cancelsTouchesInView = false
         tabBar.addGestureRecognizer(tapRecognizer)
         
+        if findMyProfileTabBarButton() != nil {
+            fastSwitcherIndicator = FastAccountSwitcherIndicatorView()
+            fastSwitcherIndicator.translatesAutoresizingMaskIntoConstraints = false
+            view.addSubview(fastSwitcherIndicator)
+            NSLayoutConstraint.activate([
+                fastSwitcherIndicator.widthAnchor.constraint(equalToConstant: 10),
+                fastSwitcherIndicator.heightAnchor.constraint(equalToConstant: 12),
+            ])
+        }
+        
         tabBar.isSpringLoaded = true
     }
     
+    override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+        
+        repositionFastSwitcherIndicator()
+    }
+    
+    override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
+        super.traitCollectionDidChange(previousTraitCollection)
+        
+        repositionFastSwitcherIndicator()
+    }
+    
+    private func repositionFastSwitcherIndicator() {
+        guard let myProfileButton = findMyProfileTabBarButton() else {
+            return
+        }
+        NSLayoutConstraint.deactivate(fastSwitcherConstraints)
+        // using interfaceOrientation isn't ideal, but UITabBar buttons may lay out horizontally even in the compact size class
+        if traitCollection.horizontalSizeClass == .compact && interfaceOrientation.isPortrait {
+            fastSwitcherConstraints = [
+                fastSwitcherIndicator.centerYAnchor.constraint(equalTo: myProfileButton.centerYAnchor, constant: -4),
+                // tab bar button image width is 30
+                fastSwitcherIndicator.leftAnchor.constraint(equalTo: myProfileButton.centerXAnchor, constant: 15 + 2),
+            ]
+        } else {
+            fastSwitcherConstraints = [
+                fastSwitcherIndicator.centerYAnchor.constraint(equalTo: myProfileButton.centerYAnchor),
+                fastSwitcherIndicator.trailingAnchor.constraint(equalTo: myProfileButton.trailingAnchor),
+            ]
+        }
+        NSLayoutConstraint.activate(fastSwitcherConstraints)
+    }
+    
+    private func findMyProfileTabBarButton() -> UIView? {
+        let tabBarButtons = tabBar.subviews.filter { String(describing: type(of: $0)).lowercased().contains("button") }
+        // sanity check that there is 1 button per VC
+        guard tabBarButtons.count == viewControllers!.count,
+              let myProfileButton = tabBarButtons.last else {
+            return nil
+        }
+        return myProfileButton
+    }
+    
     @objc private func tabBarTapped(_ recognizer: UITapGestureRecognizer) {
         fastAccountSwitcher.hide()
     }
@@ -138,6 +193,8 @@ extension MainTabBarViewController {
         if tab == .compose {
             return nil
         } else {
+            // viewWControllers array is setup in viewDidLoad
+            loadViewIfNeeded()
             return viewControllers![tab.rawValue]
         }
     }
@@ -145,13 +202,9 @@ extension MainTabBarViewController {
 
 extension MainTabBarViewController: FastAccountSwitcherViewControllerDelegate {
     func fastAccountSwitcher(_ fastAccountSwitcher: FastAccountSwitcherViewController, triggerZoneContains point: CGPoint) -> Bool {
-        let tabBarButtons = tabBar.subviews.filter { String(describing: type(of: $0)).lowercased().contains("button") }
-        // sanity check that there is 1 button per VC
-        guard tabBarButtons.count == viewControllers!.count,
-              let myProfileButton = tabBarButtons.last else {
+        guard let myProfileButton = findMyProfileTabBarButton() else {
             return false
         }
-        
         let locationInButton = myProfileButton.convert(point, from: fastAccountSwitcher.view)
         return myProfileButton.bounds.contains(locationInButton)
     }
@@ -159,19 +212,56 @@ extension MainTabBarViewController: FastAccountSwitcherViewControllerDelegate {
 
 extension MainTabBarViewController: TuskerRootViewController {
     @objc func presentCompose() {
-        let vc = ComposeHostingController(mastodonController: mastodonController)
-        let nav = EnhancedNavigationViewController(rootViewController: vc)
-        nav.presentationController?.delegate = vc
-        present(nav, animated: true)
+        if #available(iOS 15.0, *), UIDevice.current.userInterfaceIdiom == .pad || UIDevice.current.userInterfaceIdiom == .mac {
+            let compose = UserActivityManager.newPostActivity(mentioning: nil, accountID: mastodonController.accountInfo!.id)
+            let options = UIWindowScene.ActivationRequestOptions()
+            options.preferredPresentationStyle = .prominent
+            UIApplication.shared.requestSceneSessionActivation(nil, userActivity: compose, options: options, errorHandler: nil)
+        } else {
+            let vc = ComposeHostingController(mastodonController: mastodonController)
+            let nav = EnhancedNavigationViewController(rootViewController: vc)
+            nav.presentationController?.delegate = vc
+            present(nav, animated: true)
+        }
     }
     
     func select(tab: Tab) {
         if tab == .compose {
             presentCompose()
         } else {
-            selectedIndex = tab.rawValue
+            // when switching tabs, dismiss the currently presented VC
+            // otherwise the selected tab changes behind the presented VC
+            if presentedViewController != nil {
+                dismiss(animated: true) {
+                    self.selectedIndex = tab.rawValue
+                }
+            } else {
+                selectedIndex = tab.rawValue
+            }
         }
     }
+    
+    func performSearch(query: String) {
+        guard let exploreNavController = getTabController(tab: .explore) as? UINavigationController,
+              let exploreController = exploreNavController.viewControllers.first as? ExploreViewController else {
+            return
+        }
+        
+        select(tab: .explore)
+        exploreNavController.popToRootViewController(animated: false)
+        
+        // setting searchController.isActive directly doesn't work until the view has loaded/appeared for the first time
+        if exploreController.isViewLoaded {
+            exploreController.searchController.isActive = true
+        } else {
+            exploreController.searchControllerStatusOnAppearance = true
+            // we still need to load the view so that we can setup the search query
+            exploreController.loadViewIfNeeded()
+        }
+        
+        exploreController.searchController.searchBar.text = query
+        exploreController.resultsController.performSearch(query: query)
+    }
 }
 
 extension MainTabBarViewController: BackgroundableViewController {

Tusker/Screens/Main/TuskerRootViewController.swift

@@ -12,4 +12,5 @@ protocol TuskerRootViewController: UIViewController {
     func presentCompose()
     func select(tab: MainTabBarViewController.Tab)
     func getTabController(tab: MainTabBarViewController.Tab) -> UIViewController?
+    func performSearch(query: String)
 }

Tusker/Screens/Onboarding/InstanceSelectorTableViewController.swift

@@ -10,7 +10,7 @@ import UIKit
 import Combine
 import Pachyderm
 
-protocol InstanceSelectorTableViewControllerDelegate: class {
+protocol InstanceSelectorTableViewControllerDelegate: AnyObject {
     func didSelectInstance(url: URL)
 }
 

Tusker/Screens/Preferences/PreferencesView.swift

@@ -36,6 +36,9 @@ struct PreferencesView: View {
                                         .foregroundColor(.secondary)
                                 }
                             }
+                        }.onDrag {
+                            let activity = UserActivityManager.mainSceneActivity(accountID: account.id)
+                            return NSItemProvider(object: activity)
                         }
                     }.onDelete { (indices: IndexSet) in
                         var indices = indices

Tusker/Screens/Preferences/WellnessPrefsView.swift

@@ -16,6 +16,7 @@ struct WellnessPrefsView: View {
             showFavAndReblogCount
             notificationsMode
             grayscaleImages
+            disableInfiniteScrolling
         }
         .listStyle(InsetGroupedListStyle())
         .navigationBarTitle(Text("Digital Wellness"))
@@ -46,6 +47,14 @@ struct WellnessPrefsView: View {
             }
         }
     }
+    
+    private var disableInfiniteScrolling: some View {
+        Section(footer: Text("Require a button tap before loading more posts.")) {
+            Toggle(isOn: $preferences.disableInfiniteScrolling) {
+                Text("Disable Infinite Scrolling")
+            }
+        }
+    }
 }
 
 struct WellnessPrefsView_Previews: PreviewProvider {

Tusker/Screens/Profile/ProfileViewController.swift

@@ -91,11 +91,18 @@ class ProfileViewController: UIPageViewController {
         addKeyCommand(MenuController.nextSubTabCommand)
         
         accountUpdater = mastodonController.persistentContainer.accountSubject
-            .filter { [weak self] in $0 == self?.accountID }
             .receive(on: DispatchQueue.main)
+            .filter { [weak self] in $0 == self?.accountID }
             .sink { [weak self] (_) in self?.updateAccountUI() }
         
         loadAccount()
+        
+        // disable the transparent nav bar because it gets messy with multiple pages at different scroll positions
+        if let nav = navigationController {
+            let appearance = UINavigationBarAppearance()
+            appearance.configureWithDefaultBackground()
+            nav.navigationBar.scrollEdgeAppearance = appearance
+        }
     }
     
     override func viewDidAppear(_ animated: Bool) {
@@ -245,34 +252,6 @@ extension ProfileViewController: ProfileHeaderViewDelegate {
             view.pagesSegmentedControl.isUserInteractionEnabled = true
         }
     }
-    
-    func profileHeader(_ view: ProfileHeaderView, showMoreOptionsFor accountID: String, sourceView: UIView) {
-        let account = mastodonController.persistentContainer.account(for: accountID)!
-        
-        func showActivityController(activities: [UIActivity]) {
-            let activityController = UIActivityViewController(activityItems: [account.url, AccountActivityItemSource(account)], applicationActivities: activities)
-            activityController.completionWithItemsHandler = OpenInSafariActivity.completionHandler(navigator: self, url: account.url)
-            activityController.popoverPresentationController?.sourceView = sourceView
-            self.present(activityController, animated: true)
-        }
-        
-        if account.id == mastodonController.account.id {
-            showActivityController(activities: [OpenInSafariActivity()])
-        } else {
-            let request = Client.getRelationships(accounts: [account.id])
-            mastodonController.run(request) { (response) in
-                var customActivities: [UIActivity] = [OpenInSafariActivity()]
-                if case let .success(results, _) = response, let relationship = results.first {
-                    let toggleFollowActivity = relationship.following ? UnfollowAccountActivity() : FollowAccountActivity()
-                    customActivities.insert(toggleFollowActivity, at: 0)
-                }
-                
-                DispatchQueue.main.async {
-                    showActivityController(activities: customActivities)
-                }
-            }
-        }
-    }
 }
 
 extension ProfileViewController: TabBarScrollableViewController {

Tusker/Screens/Search/SearchResultsViewController.swift

@@ -14,7 +14,7 @@ fileprivate let accountCell = "accountCell"
 fileprivate let statusCell = "statusCell"
 fileprivate let hashtagCell = "hashtagCell"
 
-protocol SearchResultsViewControllerDelegate: class {
+protocol SearchResultsViewControllerDelegate: AnyObject {
     func selectedSearchResult(account accountID: String)
     func selectedSearchResult(hashtag: Hashtag)
     func selectedSearchResult(status statusID: String)
@@ -36,6 +36,7 @@ class SearchResultsViewController: EnhancedTableViewController {
     var dataSource: UITableViewDiffableDataSource<Section, Item>!
 
     private var activityIndicator: UIActivityIndicatorView!
+    private var errorLabel: UILabel!
     
     /// Types of results to search for. `nil` means all results will be included.
     var resultTypes: [SearchResultType]? = nil
@@ -60,6 +61,22 @@ class SearchResultsViewController: EnhancedTableViewController {
     
     override func viewDidLoad() {
         super.viewDidLoad()
+        
+        errorLabel = UILabel()
+        errorLabel.translatesAutoresizingMaskIntoConstraints = false
+        errorLabel.font = .preferredFont(forTextStyle: .callout)
+        errorLabel.textColor = .secondaryLabel
+        errorLabel.numberOfLines = 0
+        errorLabel.textAlignment = .center
+        errorLabel.setContentHuggingPriority(.defaultLow, for: .horizontal)
+        tableView.addSubview(errorLabel)
+        NSLayoutConstraint.activate([
+            errorLabel.centerYAnchor.constraint(equalTo: view.safeAreaLayoutGuide.centerYAnchor),
+            errorLabel.centerXAnchor.constraint(equalTo: tableView.centerXAnchor),
+            errorLabel.leadingAnchor.constraint(equalToSystemSpacingAfter: tableView.leadingAnchor, multiplier: 1),
+            tableView.trailingAnchor.constraint(equalToSystemSpacingAfter: errorLabel.trailingAnchor, multiplier: 1),
+        ])
+
 
         tableView.register(UINib(nibName: "AccountTableViewCell", bundle: .main), forCellReuseIdentifier: accountCell)
         tableView.register(UINib(nibName: "TimelineStatusTableViewCell", bundle: .main), forCellReuseIdentifier: statusCell)
@@ -131,59 +148,79 @@ class SearchResultsViewController: EnhancedTableViewController {
 
         activityIndicator.isHidden = false
         activityIndicator.startAnimating()
+        errorLabel.isHidden = true
 
-        let resultTypes = self.resultTypes
         let request = Client.search(query: query, types: resultTypes, resolve: true, limit: 10)
         mastodonController.run(request) { (response) in
-            guard case let .success(results, _) = response else { fatalError() }
-
-            DispatchQueue.main.async {
-                self.activityIndicator.isHidden = true
-                self.activityIndicator.stopAnimating()
-            }
-
-            guard self.currentQuery == query else { return }
-            
-            let oldSnapshot = self.dataSource.snapshot()
-            var snapshot = NSDiffableDataSourceSnapshot<Section, Item>()
-            
-            self.mastodonController.persistentContainer.performBatchUpdates({ (context, addAccounts, addStatuses) in
-                if oldSnapshot.indexOfSection(.accounts) != nil {
-                    oldSnapshot.itemIdentifiers(inSection: .accounts).forEach { (item) in
-                        guard case let .account(id) = item else { return }
-                        self.mastodonController.persistentContainer.account(for: id, in: context)?.decrementReferenceCount()
-                    }
-                }
-                
-                if oldSnapshot.indexOfSection(.statuses) != nil {
-                    oldSnapshot.itemIdentifiers(inSection: .statuses).forEach { (item) in
-                        guard case let .status(id, _) = item else { return }
-                        self.mastodonController.persistentContainer.status(for: id, in: context)?.decrementReferenceCount()
-                    }
-                }
-                
-                if !results.accounts.isEmpty && (resultTypes == nil || resultTypes!.contains(.accounts)) {
-                    snapshot.appendSections([.accounts])
-                    snapshot.appendItems(results.accounts.map { .account($0.id) }, toSection: .accounts)
-                    addAccounts(results.accounts)
-                }
-                if !results.hashtags.isEmpty && (resultTypes == nil || resultTypes!.contains(.hashtags)) {
-                    snapshot.appendSections([.hashtags])
-                    snapshot.appendItems(results.hashtags.map { .hashtag($0) }, toSection: .hashtags)
-                }
-                if !results.statuses.isEmpty && (resultTypes == nil || resultTypes!.contains(.statuses)) {
-                    snapshot.appendSections([.statuses])
-                    snapshot.appendItems(results.statuses.map { .status($0.id, .unknown) }, toSection: .statuses)
-                    addStatuses(results.statuses)
-                }
-            }, completion: {
+            switch response {
+            case let .success(results, _):
+                guard self.currentQuery == query else { return }
                 DispatchQueue.main.async {
-                    self.dataSource.apply(snapshot)
+                    self.activityIndicator.isHidden = true
+                    self.activityIndicator.stopAnimating()
                 }
-            })
+                self.showSearchResults(results)
+            case let .failure(error):
+                DispatchQueue.main.async {
+                    self.activityIndicator.isHidden = true
+                    self.activityIndicator.stopAnimating()
+
+                    self.showSearchError(error)
+                }
+            }
         }
     }
     
+    private func showSearchResults(_ results: SearchResults) {
+        let oldSnapshot = self.dataSource.snapshot()
+        var snapshot = NSDiffableDataSourceSnapshot<Section, Item>()
+        
+        self.mastodonController.persistentContainer.performBatchUpdates({ (context, addAccounts, addStatuses) in
+            if oldSnapshot.indexOfSection(.accounts) != nil {
+                oldSnapshot.itemIdentifiers(inSection: .accounts).forEach { (item) in
+                    guard case let .account(id) = item else { return }
+                    self.mastodonController.persistentContainer.account(for: id, in: context)?.decrementReferenceCount()
+                }
+            }
+            
+            if oldSnapshot.indexOfSection(.statuses) != nil {
+                oldSnapshot.itemIdentifiers(inSection: .statuses).forEach { (item) in
+                    guard case let .status(id, _) = item else { return }
+                    self.mastodonController.persistentContainer.status(for: id, in: context)?.decrementReferenceCount()
+                }
+            }
+            
+            let resultTypes = self.resultTypes
+            if !results.accounts.isEmpty && (resultTypes == nil || resultTypes!.contains(.accounts)) {
+                snapshot.appendSections([.accounts])
+                snapshot.appendItems(results.accounts.map { .account($0.id) }, toSection: .accounts)
+                addAccounts(results.accounts)
+            }
+            if !results.hashtags.isEmpty && (resultTypes == nil || resultTypes!.contains(.hashtags)) {
+                snapshot.appendSections([.hashtags])
+                snapshot.appendItems(results.hashtags.map { .hashtag($0) }, toSection: .hashtags)
+            }
+            if !results.statuses.isEmpty && (resultTypes == nil || resultTypes!.contains(.statuses)) {
+                snapshot.appendSections([.statuses])
+                snapshot.appendItems(results.statuses.map { .status($0.id, .unknown) }, toSection: .statuses)
+                addStatuses(results.statuses)
+            }
+        }, completion: {
+            DispatchQueue.main.async {
+                self.errorLabel.isHidden = true
+                self.dataSource.apply(snapshot)
+            }
+        })
+    }
+    
+    private func showSearchError(_ error: Client.Error) {
+        let snapshot = NSDiffableDataSourceSnapshot<Section, Item>()
+        dataSource.apply(snapshot)
+        
+        errorLabel.isHidden = false
+        errorLabel.text = error.localizedDescription
+    }
+    
     // MARK: - Table view delegate
     
     override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {

Tusker/Screens/Search/SearchViewController.swift

@@ -37,9 +37,10 @@ class SearchViewController: UIViewController {
         resultsController = SearchResultsViewController(mastodonController: mastodonController)
         resultsController.exploreNavigationController = self.navigationController
         searchController = UISearchController(searchResultsController: resultsController)
-        searchController.searchResultsUpdater = resultsController
+        searchController.obscuresBackgroundDuringPresentation = false
         searchController.searchBar.autocapitalizationType = .none
         searchController.searchBar.delegate = resultsController
+        searchController.hidesNavigationBarDuringPresentation = false
         definesPresentationContext = true
         
         navigationItem.searchController = searchController

Tusker/Screens/Timeline/InstanceTimelineViewController.swift

@@ -8,7 +8,7 @@
 
 import UIKit
 
-protocol InstanceTimelineViewControllerDelegate: class {
+protocol InstanceTimelineViewControllerDelegate: AnyObject {
     func didSaveInstance(url: URL)
     func didUnsaveInstance(url: URL)
 }

Tusker/Screens/Timeline/TimelineTableViewController.swift

@@ -11,7 +11,7 @@ import Pachyderm
 
 typealias TimelineEntry = (id: String, state: StatusState)
 
-class TimelineTableViewController: TimelineLikeTableViewController<TimelineEntry> {
+class TimelineTableViewController: DiffableTimelineLikeTableViewController<TimelineTableViewController.Section, TimelineTableViewController.Item> {
     
     let timeline: Timeline
     weak var mastodonController: MastodonController!
@@ -19,6 +19,8 @@ class TimelineTableViewController: TimelineLikeTableViewController<TimelineEntry
     private var newer: RequestRange?
     private var older: RequestRange?
     
+    private var didConfirmLoadMore = false
+    
     init(for timeline: Timeline, mastodonController: MastodonController) {
         self.timeline = timeline
         self.mastodonController = mastodonController
@@ -40,14 +42,14 @@ class TimelineTableViewController: TimelineLikeTableViewController<TimelineEntry
     }
     
     deinit {
-        guard let persistentContainer = mastodonController?.persistentContainer else { return }
+        guard let persistentContainer = mastodonController?.persistentContainer,
+              let dataSource = dataSource else { return }
         // decrement reference counts of any statuses we still have
         // if the app is currently being quit, this will not affect the persisted data because
         // the persistent container would already have been saved in SceneDelegate.sceneDidEnterBackground(_:)
-        for section in sections {
-            for (id, _) in section {
-                persistentContainer.status(for: id)?.decrementReferenceCount()
-            }
+        // todo: remove the whole reference count system
+        for case let .status(id: id, state: _) in dataSource.snapshot().itemIdentifiers {
+            persistentContainer.status(for: id)?.decrementReferenceCount()
         }
     }
     
@@ -55,100 +57,157 @@ class TimelineTableViewController: TimelineLikeTableViewController<TimelineEntry
         super.viewDidLoad()
         
         tableView.register(UINib(nibName: "TimelineStatusTableViewCell", bundle: .main), forCellReuseIdentifier: "statusCell")
+        tableView.register(UINib(nibName: "ConfirmLoadMoreTableViewCell", bundle: .main), forCellReuseIdentifier: "confirmLoadMoreCell")
     }
     
+    // MARK: - DiffableTimelineLikeTableViewController
+    
     override class func refreshCommandTitle() -> String {
         return NSLocalizedString("Refresh Statuses", comment: "refresh status command discoverability title")
     }
     
-    override func willRemoveRows(at indexPaths: [IndexPath]) {
-        for indexPath in indexPaths {
-            let id = item(for: indexPath).id
-            mastodonController.persistentContainer.status(for: id)?.decrementReferenceCount()
+    override func timelineContentSections() -> [Section] {
+        return [.statuses]
+    }
+
+    override func cellProvider(_ tableView: UITableView, _ indexPath: IndexPath, _ item: Item) -> UITableViewCell? {
+        switch item {
+        case let .status(id: id, state: state):
+            let cell = tableView.dequeueReusableCell(withIdentifier: "statusCell", for: indexPath) as! TimelineStatusTableViewCell
+            
+            cell.delegate = self
+            cell.updateUI(statusID: id, state: state)
+            return cell
+            
+        case .confirmLoadMore:
+            let cell = tableView.dequeueReusableCell(withIdentifier: "confirmLoadMoreCell", for: indexPath) as! ConfirmLoadMoreTableViewCell
+            cell.confirmLoadMore = {
+                self.didConfirmLoadMore = true
+                self.loadOlder()
+                self.didConfirmLoadMore = false
+            }
+            return cell
         }
     }
     
-    override func loadInitialItems(completion: @escaping ([TimelineEntry]) -> Void) {
+    override func loadInitialItems(completion: @escaping (LoadResult) -> Void) {
+        guard let mastodonController = mastodonController else {
+            completion(.failure(.noClient))
+            return
+        }
+        
         let request = Client.getStatuses(timeline: timeline)
         
-        mastodonController?.run(request) { (response) in
-            guard case let .success(statuses, pagination) = response else {
-                completion([])
-                return
-            }
-            
-            self.newer = pagination?.newer
-            self.older = pagination?.older
-            
-            self.mastodonController?.persistentContainer.addAll(statuses: statuses) {
-                completion(statuses.map { ($0.id, .unknown) })
+        mastodonController.run(request) { response in
+            switch response {
+            case let .failure(error):
+                completion(.failure(.client(error)))
+                
+            case let .success(statuses, pagination):
+                self.newer = pagination?.newer
+                self.older = pagination?.older
+                
+                self.mastodonController.persistentContainer.addAll(statuses: statuses) {
+                    var snapshot = Snapshot()
+                    snapshot.appendSections([.statuses, .footer])
+                    snapshot.appendItems(statuses.map { .status(id: $0.id, state: .unknown) }, toSection: .statuses)
+                    completion(.success(snapshot))
+                }
             }
         }
     }
     
-    override func loadOlder(completion: @escaping ([TimelineEntry]) -> Void) {
+    override func loadOlderItems(currentSnapshot: Snapshot, completion: @escaping (LoadResult) -> Void) {
         guard let older = older else {
-            completion([])
+            completion(.failure(.noOlder))
+            return
+        }
+        
+        guard !Preferences.shared.disableInfiniteScrolling || didConfirmLoadMore else {
+            guard !currentSnapshot.itemIdentifiers(inSection: .footer).contains(.confirmLoadMore) else {
+                // todo: need something more accurate than "success"/"failure"
+                completion(.success(currentSnapshot))
+                return
+            }
+            var snapshot = currentSnapshot
+            snapshot.appendItems([.confirmLoadMore], toSection: .footer)
+            self.dataSource.apply(snapshot)
+            completion(.success(snapshot))
             return
         }
         
         let request = Client.getStatuses(timeline: timeline, range: older)
         
-        mastodonController.run(request) { (response) in
-            guard case let .success(statuses, pagination) = response else {
-                completion([])
-                return
-            }
-            
-            self.older = pagination?.older
-            
-            self.mastodonController?.persistentContainer.addAll(statuses: statuses) {
-                completion(statuses.map { ($0.id, .unknown) })
+        mastodonController.run(request) { response in
+            switch response {
+            case let .failure(error):
+                completion(.failure(.client(error)))
+                
+            case let .success(statuses, pagination):
+                self.older = pagination?.older
+                
+                self.mastodonController.persistentContainer.addAll(statuses: statuses) {
+                    var snapshot = currentSnapshot
+                    snapshot.appendItems(statuses.map { .status(id: $0.id, state: .unknown) }, toSection: .statuses)
+                    snapshot.deleteItems([.confirmLoadMore])
+                    completion(.success(snapshot))
+                }
             }
         }
     }
     
-    override func loadNewer(completion: @escaping ([TimelineEntry]) -> Void) {
+    override func loadNewerItems(currentSnapshot: Snapshot, completion: @escaping (LoadResult) -> Void) {
         guard let newer = newer else {
-            completion([])
+            completion(.failure(.noNewer))
             return
         }
         
         let request = Client.getStatuses(timeline: timeline, range: newer)
-        
-        mastodonController.run(request) { (response) in
-            guard case let .success(statuses, pagination) = response else {
-                completion([])
-                return
-            }
-            
-            // if there are no new statuses, pagination is nil
-            // if we were to then overwrite self.newer, future refreshes would fail
-            if let newer = pagination?.newer {
-                self.newer = newer
-            }
-            
-            self.mastodonController?.persistentContainer.addAll(statuses: statuses) {
-                completion(statuses.map { ($0.id, .unknown) })
+        mastodonController.run(request) { response in
+            switch response {
+            case let .failure(error):
+                completion(.failure(.client(error)))
+                
+            case let .success(statuses, pagination):
+                // if there are no new statuses, pagination is nil
+                // if we were to then overwrite self.newer, future refresh would fail
+                if let newer = pagination?.newer {
+                    self.newer = newer
+                }
+                
+                self.mastodonController.persistentContainer.addAll(statuses: statuses) {
+                    var snapshot = currentSnapshot
+                    let identifiers = statuses.map { Item.status(id: $0.id, state: .unknown) }
+                    if let first = snapshot.itemIdentifiers(inSection: .statuses).first {
+                        snapshot.insertItems(identifiers, beforeItem: first)
+                    } else {
+                        snapshot.appendItems(identifiers, toSection: .statuses)
+                    }
+                    completion(.success(snapshot))
+                }
             }
         }
     }
     
-    // MARK: - UITableViewDataSource
-    
-    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
-        guard let cell = tableView.dequeueReusableCell(withIdentifier: "statusCell", for: indexPath) as? TimelineStatusTableViewCell else { fatalError() }
-
-        let (id, state) = item(for: indexPath)
-        cell.delegate = self
-
-        cell.updateUI(statusID: id, state: state)
-
-        return cell
+    override func willRemoveItems(_ items: [Item]) {
+        for case let .status(id: id, state: _) in items {
+            mastodonController.persistentContainer.status(for: id)?.decrementReferenceCount()
+        }
     }
     
 }
 
+extension TimelineTableViewController {
+    enum Section: Hashable, CaseIterable {
+        case statuses
+        case footer
+    }
+    enum Item: Hashable {
+        case status(id: String, state: StatusState)
+        case confirmLoadMore
+    }
+}
+
 extension TimelineTableViewController: TuskerNavigationDelegate {
     var apiController: MastodonController { mastodonController }
 }
@@ -161,17 +220,23 @@ extension TimelineTableViewController: StatusTableViewCellDelegate {
 
 extension TimelineTableViewController: UITableViewDataSourcePrefetching, StatusTablePrefetching {
     func tableView(_ tableView: UITableView, prefetchRowsAt indexPaths: [IndexPath]) {
-        let ids = indexPaths.map { item(for: $0).id }
-        prefetchStatuses(with: ids)
-    }
-    
-    func tableView(_ tableView: UITableView, cancelPrefetchingForRowsAt indexPaths: [IndexPath]) {
         let ids: [String] = indexPaths.compactMap {
-            guard $0.section < sections.count,
-                  $0.row < sections[$0.section].count else {
+            if case let .status(id: id, state: _) = dataSource.itemIdentifier(for: $0) {
+                return id
+            } else {
+                return nil
+            }
+        }
+        prefetchStatuses(with: ids)
+    }
+
+    func tableView(_ tableView: UITableView, cancelPrefetchingForRowsAt indexPaths: [IndexPath]) {
+        let ids: [String] = indexPaths.compactMap {
+            if case let .status(id: id, state: _) = dataSource.itemIdentifier(for: $0) {
+                return id
+            } else {
                 return nil
             }
-            return item(for: $0).id
         }
         cancelPrefetchingStatuses(with: ids)
     }

Tusker/Screens/Utilities/DiffableTimelineLikeTableViewController.swift

@@ -0,0 +1,269 @@
+//
+//  DiffableTimelineLikeTableViewController.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 6/18/21.
+//  Copyright © 2021 Shadowfacts. All rights reserved.
+//
+
+import UIKit
+import Pachyderm
+
+class DiffableTimelineLikeTableViewController<Section: Hashable & CaseIterable, Item: Hashable>: EnhancedTableViewController, RefreshableViewController {
+    
+    typealias Snapshot = NSDiffableDataSourceSnapshot<Section, Item>
+    typealias LoadResult = Result<Snapshot, LoadError>
+    
+    private let pageSize = 20
+    
+    private(set) var state = State.unloaded
+    private var lastLastVisibleRow: IndexPath?
+    
+    private(set) var dataSource: UITableViewDiffableDataSource<Section, Item>!
+    
+    init() {
+        super.init(style: .plain)
+        
+        addKeyCommand(MenuController.refreshCommand(discoverabilityTitle: Self.refreshCommandTitle()))
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
+        dataSource = UITableViewDiffableDataSource(tableView: tableView, cellProvider: self.cellProvider)
+        
+        tableView.rowHeight = UITableView.automaticDimension
+        tableView.estimatedRowHeight = 140
+        
+        #if !targetEnvironment(macCatalyst)
+        self.refreshControl = UIRefreshControl()
+        self.refreshControl!.addTarget(self, action: #selector(refresh), for: .valueChanged)
+        #endif
+        
+        if let prefetchSource = self as? UITableViewDataSourcePrefetching {
+            tableView.prefetchDataSource = prefetchSource
+        }
+    }
+    
+    override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+        
+        loadInitial()
+    }
+    
+    override func viewDidDisappear(_ animated: Bool) {
+        super.viewDidDisappear(animated)
+        
+        pruneOffscreenRows()
+    }
+    
+    class func refreshCommandTitle() -> String {
+        return "Refresh"
+    }
+    
+    private func pruneOffscreenRows() {
+        guard let lastVisibleRow = lastLastVisibleRow else {
+            return
+        }
+        
+        var snapshot = dataSource.snapshot()
+        
+        let lastVisibleRowSection = snapshot.sectionIdentifiers[lastVisibleRow.section]
+        
+        let contentSections = snapshot.sectionIdentifiers.filter { timelineContentSections().contains($0) }
+        
+        guard let lastVisibleContentSectionIndex = contentSections.lastIndex(of: lastVisibleRowSection) else {
+            return
+        }
+        
+        if lastVisibleContentSectionIndex < contentSections.count - 1 {
+            // there are more content sections below the current last visible one
+            
+            let sectionsToRemove = contentSections[lastVisibleContentSectionIndex...]
+            snapshot.deleteSections(Array(sectionsToRemove))
+            
+            willRemoveItems(sectionsToRemove.flatMap(snapshot.itemIdentifiers(inSection:)))
+        } else if lastVisibleContentSectionIndex == contentSections.count - 1 {
+            let items = snapshot.itemIdentifiers(inSection: lastVisibleRowSection)
+            
+            if lastVisibleRow.row < items.count - pageSize {
+                let itemsToRemove = Array(items.suffix(pageSize))
+                snapshot.deleteItems(itemsToRemove)
+                
+                willRemoveItems(itemsToRemove)
+            } else {
+                return
+            }
+        } else {
+            return
+        }
+        
+        dataSource.apply(snapshot, animatingDifferences: false)
+    }
+    
+    private func loadInitial() {
+        guard state == .unloaded else { return }
+        // set loaded immediately so we don't trigger another request while the current one is running
+        state = .loadingInitial
+        
+        loadInitialItems() { result in
+            guard case let .success(snapshot) = result else {
+                self.state = .unloaded
+                return
+            }
+            DispatchQueue.main.async {
+                self.dataSource.apply(snapshot, animatingDifferences: false)
+                self.state = .loaded
+            }
+       }
+    }
+    
+    func reloadInitial() {
+        state = .unloaded
+        loadInitial()
+    }
+    
+    func loadOlder() {
+        guard state != .loadingOlder else { return }
+        
+        state = .loadingOlder
+        
+        loadOlderItems(currentSnapshot: dataSource.snapshot()) { result in
+            guard case let .success(snapshot) = result else {
+                self.state = .loaded
+                return
+            }
+            DispatchQueue.main.async {
+                self.dataSource.apply(snapshot, animatingDifferences: false)
+                self.state = .loaded
+            }
+        }
+    }
+    
+    func cellHeightChanged() {
+        // causes the table view to recalculate the cell heights
+        tableView.beginUpdates()
+        tableView.endUpdates()
+    }
+    
+    // MARK: - UITableViewDelegate
+    
+    override func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
+        // this assumes that indexPathsForVisibleRows is always in order
+        lastLastVisibleRow = tableView.indexPathsForVisibleRows?.last
+        
+        let orderedContentSections = dataSource.snapshot().sectionIdentifiers.filter { timelineContentSections().contains($0) }
+        if indexPath.section == orderedContentSections.count - 1,
+           indexPath.row == tableView.numberOfRows(inSection: indexPath.section) - 1 {
+            
+            loadOlder()
+        }
+    }
+    
+    override func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
+        return true
+    }
+    
+    override func tableView(_ tableView: UITableView, leadingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
+        return (tableView.cellForRow(at: indexPath) as? TableViewSwipeActionProvider)?.leadingSwipeActionsConfiguration()
+    }
+    
+    override func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
+        return (tableView.cellForRow(at: indexPath) as? TableViewSwipeActionProvider)?.trailingSwipeActionsConfiguration()
+    }
+    
+    // MARK: - RefreshableViewController
+    
+    func refresh() {
+        guard state != .loadingNewer else { return }
+        
+        state = .loadingNewer
+        
+        let snapshot = dataSource.snapshot()
+        
+        var item: Item? = nil
+        for section in timelineContentSections() {
+            if let first = snapshot.itemIdentifiers(inSection: section).first {
+                item = first
+                break
+            }
+        }
+        
+        loadNewerItems(currentSnapshot: snapshot) { result in
+            guard case let .success(snapshot) = result else {
+                DispatchQueue.main.async {
+                    self.refreshControl?.endRefreshing()
+                    self.state = .loaded
+                }
+                return
+            }
+            
+            DispatchQueue.main.async {
+                self.refreshControl?.endRefreshing()
+                self.dataSource.apply(snapshot, animatingDifferences: false)
+                self.state = .loaded
+
+                if let item = item,
+                   let indexPath = self.dataSource.indexPath(for: item) {
+                    // maintain the current position in the list (don't scroll to top)
+                    self.tableView.scrollToRow(at: indexPath, at: .top, animated: false)
+                }
+            }
+        }
+    }
+    
+    // MARK: - Subclass Methods
+    
+    func cellProvider(_ tableView: UITableView, _ indexPath: IndexPath, _ item: Item) -> UITableViewCell? {
+        fatalError("cellProvider(_:_:_:) must be implemented by subclasses")
+    }
+    
+    func loadInitialItems(completion: @escaping (LoadResult) -> Void) {
+        fatalError("loadInitialItems(completion:) must be implemented by subclasses")
+    }
+    
+    func loadOlderItems(currentSnapshot: Snapshot, completion: @escaping (LoadResult) -> Void) {
+        fatalError("loadOlderItesm(completion:) must be implemented by subclasses")
+    }
+    
+    func loadNewerItems(currentSnapshot: Snapshot, completion: @escaping (LoadResult) -> Void) {
+        fatalError("loadNewerItems(completion:) must be implemented by subclasses")
+    }
+    
+    func timelineContentSections() -> Section.AllCases {
+        return Section.allCases
+    }
+    
+    func willRemoveItems(_ items: [Item]) {
+    }
+
+}
+
+extension DiffableTimelineLikeTableViewController {
+    enum State: Equatable {
+        case unloaded
+        case loadingInitial
+        case loaded
+        case loadingNewer
+        case loadingOlder
+    }
+}
+
+extension DiffableTimelineLikeTableViewController {
+    enum LoadError: LocalizedError {
+        case noClient
+        case noOlder
+        case noNewer
+        case client(Client.Error)
+    }
+}
+
+extension DiffableTimelineLikeTableViewController: BackgroundableViewController {
+    func sceneDidEnterBackground() {
+        pruneOffscreenRows()
+    }
+}

Tusker/Screens/Utilities/Previewing.swift

@@ -10,7 +10,7 @@ import UIKit
 import SafariServices
 import Pachyderm
 
-protocol MenuPreviewProvider: class {
+protocol MenuPreviewProvider: AnyObject {
     
     typealias PreviewProviders = (content: UIContextMenuContentPreviewProvider, actions: () -> [UIMenuElement])
     
@@ -37,10 +37,11 @@ extension MenuPreviewProvider {
         guard let mastodonController = mastodonController,
             let account = mastodonController.persistentContainer.account(for: accountID) else { return [] }
         
-        guard mastodonController.loggedIn else {
+        guard let loggedInAccountID = mastodonController.accountInfo?.id else {
+            // user is logged out
             return [
                 openInSafariAction(url: account.url),
-                createAction(identifier: "share", title: "Share...", systemImageName: "square.and.arrow.up", handler: { [weak self, weak sourceView] (_) in
+                createAction(identifier: "share", title: "Share", systemImageName: "square.and.arrow.up", handler: { [weak self, weak sourceView] (_) in
                     guard let self = self else { return }
                     self.navigationDelegate?.showMoreOptions(forAccount: accountID, sourceView: sourceView)
                 })
@@ -63,38 +64,43 @@ extension MenuPreviewProvider {
                 let request = Client.getRelationships(accounts: [account.id])
                 // talk about callback hell :/
                 mastodonController.run(request) { [weak self] (response) in
-                    if let self = self,
-                       case let .success(results, _) = response,
-                       let relationship = results.first {
-                        let following = relationship.following
-                        DispatchQueue.main.async {
-                            elementHandler([
-                                self.createAction(identifier: "follow", title: following ? "Unfollow" : "Follow", systemImageName: following ? "person.badge.minus" : "person.badge.plus", handler: { (_) in
-                                    let request = (following ? Account.unfollow : Account.follow)(accountID)
-                                    mastodonController.run(request) { (response) in
-                                        switch response {
-                                        case .failure(_):
-                                            fatalError()
-                                        case let .success(relationship, _):
-                                            mastodonController.persistentContainer.addOrUpdate(relationship: relationship)
-                                        }
-                                    }
-                                })
-                            ])
-                        }
+                    guard let self = self,
+                          case let .success(results, _) = response,
+                          let relationship = results.first else {
+                              elementHandler([])
+                              return
+                          }
+                    let following = relationship.following
+                    DispatchQueue.main.async {
+                        let action = self.createAction(identifier: "follow", title: following ? "Unfollow" : "Follow", systemImageName: following ? "person.badge.minus" : "person.badge.plus", handler: { (_) in
+                            let request = (following ? Account.unfollow : Account.follow)(accountID)
+                            mastodonController.run(request) { (response) in
+                                switch response {
+                                case .failure(_):
+                                    fatalError()
+                                case let .success(relationship, _):
+                                    mastodonController.persistentContainer.addOrUpdate(relationship: relationship)
+                                }
+                            }
+                        })
+                        elementHandler([
+                            action
+                        ])
                     }
                 }
             }))
         }
         
-        let shareSection = [
+        var shareSection = [
             openInSafariAction(url: account.url),
-            createAction(identifier: "share", title: "Share...", systemImageName: "square.and.arrow.up", handler: { [weak self, weak sourceView] (_) in
+            createAction(identifier: "share", title: "Share", systemImageName: "square.and.arrow.up", handler: { [weak self, weak sourceView] (_) in
                 guard let self = self else { return }
                 self.navigationDelegate?.showMoreOptions(forAccount: accountID, sourceView: sourceView)
             })
         ]
         
+        addOpenInNewWindow(actions: &shareSection, activity: UserActivityManager.showProfileActivity(id: accountID, accountID: loggedInAccountID))
+        
         return [
             UIMenu(title: "", image: nil, identifier: nil, options: [.displayInline], children: shareSection),
             UIMenu(title: "", image: nil, identifier: nil, options: [.displayInline], children: actionsSection),
@@ -104,7 +110,7 @@ extension MenuPreviewProvider {
     func actionsForURL(_ url: URL, sourceView: UIView?) -> [UIAction] {
         return [
            openInSafariAction(url: url),
-            createAction(identifier: "share", title: "Share...", systemImageName: "square.and.arrow.up", handler: { [weak self, weak sourceView] (_) in
+            createAction(identifier: "share", title: "Share", systemImageName: "square.and.arrow.up", handler: { [weak self, weak sourceView] (_) in
                 guard let self = self else { return }
                 self.navigationDelegate?.showMoreOptions(forURL: url, sourceView: sourceView)
             })
@@ -133,13 +139,14 @@ extension MenuPreviewProvider {
         ]
     }
     
-    func actionsForStatus(_ status: StatusMO, sourceView: UIView?) -> [UIMenuElement] {
+    func actionsForStatus(_ status: StatusMO, sourceView: UIView?, includeReply: Bool = true) -> [UIMenuElement] {
         guard let mastodonController = mastodonController else { return [] }
         
-        guard mastodonController.loggedIn else {
+        guard let accountID = mastodonController.accountInfo?.id else {
+            // user is logged out
             return [
                 openInSafariAction(url: status.url!),
-                createAction(identifier: "share", title: "Share...", systemImageName: "square.and.arrow.up", handler: { [weak self, weak sourceView] (_) in
+                createAction(identifier: "share", title: "Share", systemImageName: "square.and.arrow.up", handler: { [weak self, weak sourceView] (_) in
                     guard let self = self else { return }
                     self.navigationDelegate?.showMoreOptions(forStatus: status.id, sourceView: sourceView)
                 })
@@ -150,10 +157,6 @@ extension MenuPreviewProvider {
         let muted = status.muted
         
         var actionsSection = [
-            createAction(identifier: "reply", title: "Reply", systemImageName: "arrowshape.turn.up.left", handler: { [weak self] (_) in
-                guard let self = self else { return }
-                self.navigationDelegate?.compose(inReplyToID: status.id)
-            }),
             createAction(identifier: "bookmark", title: bookmarked ? "Unbookmark" : "Bookmark", systemImageName: bookmarked ? "bookmark.fill" : "bookmark", handler: { [weak self] (_) in
                 guard let self = self else { return }
                 let request = (bookmarked ? Status.unbookmark : Status.bookmark)(status.id)
@@ -174,9 +177,16 @@ extension MenuPreviewProvider {
             })
         ]
         
+        if includeReply {
+            actionsSection.insert(createAction(identifier: "reply", title: "Reply", systemImageName: "arrowshape.turn.up.left", handler: { [weak self] (_) in
+                guard let self = self else { return }
+                self.navigationDelegate?.compose(inReplyToID: status.id)
+            }), at: 0)
+        }
+        
         if mastodonController.account != nil && mastodonController.account.id == status.account.id {
             let pinned = status.pinned ?? false
-            actionsSection.append(createAction(identifier: "pin", title: pinned ? "Unpin" : "Pin", systemImageName: pinned ? "pin.slash" : "pin", handler: { [weak self] (_) in
+            actionsSection.append(createAction(identifier: "pin", title: pinned ? "Unpin from Profile" : "Pin to Profile", systemImageName: pinned ? "pin.slash" : "pin", handler: { [weak self] (_) in
                 guard let self = self else { return }
                 let request = (pinned ? Status.unpin : Status.pin)(status.id)
                 self.mastodonController?.run(request, completion: { [weak self] (response) in
@@ -204,21 +214,13 @@ extension MenuPreviewProvider {
         
         var shareSection = [
             openInSafariAction(url: status.url!),
-            createAction(identifier: "share", title: "Share...", systemImageName: "square.and.arrow.up", handler: { [weak self, weak sourceView] (_) in
+            createAction(identifier: "share", title: "Share", systemImageName: "square.and.arrow.up", handler: { [weak self, weak sourceView] (_) in
                 guard let self = self else { return }
                 self.navigationDelegate?.showMoreOptions(forStatus: status.id, sourceView: sourceView)
             }),
         ]
         
-        #if targetEnvironment(macCatalyst)
-        shareSection.append(createAction(identifier: "new_window", title: "Open in New  Window", systemImageName: "", handler: { (_) in
-            guard let id = mastodonController.accountInfo?.id else {
-                return
-            }
-            // todo: this should try to find an existing session
-            UIApplication.shared.requestSceneSessionActivation(nil, userActivity: UserActivityManager.showConversationActivity(mainStatusID: status.id, accountID: id), options: nil, errorHandler: nil)
-        }))
-        #endif
+        addOpenInNewWindow(actions: &shareSection, activity: UserActivityManager.showConversationActivity(mainStatusID: status.id, accountID: accountID))
         
         return [
             UIMenu(title: "", image: nil, identifier: nil, options: [.displayInline], children: shareSection),
@@ -242,6 +244,28 @@ extension MenuPreviewProvider {
         })
     }
     
+    private func addOpenInNewWindow(actions: inout [UIAction], activity: @escaping @autoclosure () -> NSUserActivity) {
+        #if SDK_IOS_15
+        if #available(iOS 15.0, *) {
+            let options = UIWindowScene.ActivationRequestOptions()
+            options.preferredPresentationStyle = .automatic
+            actions.append(UIWindowScene.ActivationAction { (_) in
+                return .init(userActivity: activity(), options: options, preview: nil)
+            })
+        } else if UIDevice.current.userInterfaceIdiom == .pad || UIDevice.current.userInterfaceIdiom == .mac {
+            actions.append(createAction(identifier: "new_window", title: "Open in New Window", systemImageName: "rectangle.badge.plus", handler: { (_) in
+                UIApplication.shared.requestSceneSessionActivation(nil, userActivity: activity(), options: nil, errorHandler: nil)
+            }))
+        }
+        #else
+        if UIDevice.current.userInterfaceIdiom == .pad || UIDevice.current.userInterfaceIdiom == .mac {
+            actions.append(createAction(identifier: "new_window", title: "Open in New Window", systemImageName: "rectangle.badge.plus", handler: { (_) in
+                UIApplication.shared.requestSceneSessionActivation(nil, userActivity: activity(), options: nil, errorHandler: nil)
+            }))
+        }
+        #endif
+    }
+    
 }
 
 extension LargeImageViewController: CustomPreviewPresenting {

Tusker/Screens/Utilities/SegmentedPageViewController.swift

@@ -44,6 +44,13 @@ class SegmentedPageViewController: UIPageViewController, UIPageViewControllerDel
         
         addKeyCommand(MenuController.prevSubTabCommand)
         addKeyCommand(MenuController.nextSubTabCommand)
+        
+        // disable the transparent nav bar because it gets messy with multiple pages at different scroll positions
+        if let nav = navigationController {
+            let appearance = UINavigationBarAppearance()
+            appearance.configureWithDefaultBackground()
+            nav.navigationBar.scrollEdgeAppearance = appearance
+        }
     }
     
     func selectPage(at index: Int, animated: Bool) {

Tusker/Screens/Utilities/TimelineLikeTableViewController.swift

@@ -9,8 +9,8 @@
 import UIKit
 
 /// A table view controller that manages common functionality  between timeline-like UIs.
-// For example, this class handles loading new items when the user scrolls to the end,
-// refreshing, and pruning offscreen rows automatically.
+/// For example, this class handles loading new items when the user scrolls to the end,
+/// refreshing, and pruning offscreen rows automatically.
 class TimelineLikeTableViewController<Item>: EnhancedTableViewController, RefreshableViewController {
 
     private(set) var loaded = false

Tusker/Shortcuts/UserActivityManager.swift

@@ -37,6 +37,15 @@ class UserActivityManager {
         }
         return LocalData.shared.getAccount(id: id)
     }
+    
+    // MARK: - Main Scene
+    static func mainSceneActivity(accountID: String) -> NSUserActivity {
+        let activity = NSUserActivity(type: .mainScene)
+        activity.userInfo = [
+            "accountID": accountID,
+        ]
+        return activity
+    }
 
     // MARK: - New Post
     static func newPostActivity(mentioning: Account? = nil, accountID: String) -> NSUserActivity {
@@ -61,6 +70,7 @@ class UserActivityManager {
         // TODO: check not currently showing compose screen
         let mentioning = activity.userInfo?["mentioning"] as? String
         let draft = mastodonController.createDraft(mentioningAcct: mentioning)
+        // todo: this shouldn't use self.mastodonController, it should get the right one based on the userInfo accountID
         let composeVC = ComposeHostingController(draft: draft, mastodonController: mastodonController)
         present(UINavigationController(rootViewController: composeVC))
     }

Tusker/Shortcuts/UserActivityType.swift

@@ -9,6 +9,7 @@
 import Foundation
 
 enum UserActivityType: String {
+    case mainScene = "space.vaccor.Tusker.activity.main-scene"
     case newPost = "space.vaccor.Tusker.activity.new-post"
     case checkNotifications = "space.vaccor.Tusker.activity.check-notifications"
     case showTimeline = "space.vaccor.Tusker.activity.show-timeline"
@@ -22,6 +23,8 @@ enum UserActivityType: String {
 extension UserActivityType {
     var handle: (NSUserActivity) -> Void {
         switch self {
+        case .mainScene:
+            fatalError("cannot handle main scene activity")
         case .newPost:
             return UserActivityManager.handleNewPost
         case .checkNotifications:

Tusker/TuskerNavigationDelegate.swift

@@ -89,15 +89,22 @@ extension TuskerNavigationDelegate {
     }
     
     func compose(editing draft: Draft) {
-        let compose = ComposeHostingController(draft: draft, mastodonController: apiController)
-        
-        let vc = UINavigationController(rootViewController: compose)
-        vc.presentationController?.delegate = compose
-        present(vc, animated: true)
+        if #available(iOS 15.0, *), UIDevice.current.userInterfaceIdiom == .pad || UIDevice.current.userInterfaceIdiom == .mac {
+            let compose = UserActivityManager.editDraftActivity(id: draft.id, accountID: apiController.accountInfo!.id)
+            let options = UIWindowScene.ActivationRequestOptions()
+            options.preferredPresentationStyle = .prominent
+            UIApplication.shared.requestSceneSessionActivation(nil, userActivity: compose, options: options, errorHandler: nil)
+        } else {
+            let compose = ComposeHostingController(draft: draft, mastodonController: apiController)
+            let nav = UINavigationController(rootViewController: compose)
+            nav.presentationController?.delegate = compose
+            present(nav, animated: true)
+        }
     }
     
     func compose(inReplyToID: String? = nil, mentioningAcct: String? = nil) {
         let draft = apiController.createDraft(inReplyToID: inReplyToID, mentioningAcct: mentioningAcct)
+        DraftsManager.shared.add(draft)
         compose(editing: draft)
     }
     

Tusker/Views/Attachments/AttachmentView.swift

@@ -11,7 +11,7 @@ import Pachyderm
 import Gifu
 import AVFoundation
 
-protocol AttachmentViewDelegate: class {
+protocol AttachmentViewDelegate: AnyObject {
     func attachmentViewGallery(startingAt index: Int) -> GalleryViewController?
     func attachmentViewPresent(_ vc: UIViewController, animated: Bool)
 }
@@ -75,6 +75,9 @@ class AttachmentView: UIImageView, GIFAnimatable {
         NotificationCenter.default.addObserver(self, selector: #selector(gifPlaybackModeChanged), name: .NSProcessInfoPowerStateDidChange, object: nil)
         
         addInteraction(UIContextMenuInteraction(delegate: self))
+        
+        isAccessibilityElement = true
+        accessibilityTraits = [.image, .button]
     }
     
     @objc private func preferencesChanged() {
@@ -161,7 +164,9 @@ class AttachmentView: UIImageView, GIFAnimatable {
         let attachmentURL = attachment.url
         attachmentRequest = ImageCache.attachments.get(attachmentURL) { [weak self] (data, _) in
             guard let self = self, let data = data else { return }
-            self.attachmentRequest = nil
+            DispatchQueue.main.async {
+                self.attachmentRequest = nil
+            }
             if self.attachment.url.pathExtension == "gif" {
                 self.source = .gifData(attachmentURL, data)
                 if self.autoplayGifs {
@@ -293,6 +298,13 @@ class AttachmentView: UIImageView, GIFAnimatable {
     @objc func imagePressed() {
         showGallery()
     }
+    
+    // MARK: - Accessibility
+    
+    override func accessibilityActivate() -> Bool {
+        showGallery()
+        return true
+    }
 
 }
 

Tusker/Views/Attachments/AttachmentsContainerView.swift

@@ -248,9 +248,11 @@ class AttachmentsContainerView: UIView {
         let attachmentView = AttachmentView(attachment: attachments[index], index: index, expectedSize: size)
         attachmentView.delegate = delegate
         attachmentView.translatesAutoresizingMaskIntoConstraints = false
-        attachmentView.isAccessibilityElement = true
-        attachmentView.accessibilityTraits = [.image, .button]
         attachmentView.accessibilityLabel = String(format: NSLocalizedString("Attachment %d", comment: "attachment at index accessiblity label"), index + 1)
+        attachmentView.accessibilityLabel = "Attachment \(index + 1)"
+        if let desc = attachments[index].description {
+            attachmentView.accessibilityLabel! += ", \(desc)"
+        }
         attachmentViews.add(attachmentView)
         return attachmentView
     }

Tusker/Views/BaseEmojiLabel.swift

@@ -11,7 +11,7 @@ import Pachyderm
 
 private let emojiRegex = try! NSRegularExpression(pattern: ":(\\w+):", options: [])
 
-protocol BaseEmojiLabel: class {
+protocol BaseEmojiLabel: AnyObject {
     var emojiIdentifier: String? { get set }
     var emojiRequests: [ImageCache.Request] { get set }
     var emojiFont: UIFont { get }

Tusker/Views/Confirm Load More Cell/ConfirmLoadMoreTableViewCell.swift

@@ -0,0 +1,55 @@
+//
+//  ConfirmLoadMoreTableViewCell.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 6/23/21.
+//  Copyright © 2021 Shadowfacts. All rights reserved.
+//
+
+import UIKit
+
+protocol ConfirmLoadOlderTableViewCellDelegate: AnyObject {
+    func confirmLoadMore()
+}
+
+class ConfirmLoadMoreTableViewCell: UITableViewCell {
+    
+    var confirmLoadMore: (() -> Void)?
+    
+    @IBOutlet weak var confirmButton: UIButton!
+    
+    private var isLoading = false
+    
+    override func awakeFromNib() {
+        super.awakeFromNib()
+        
+        if #available(iOS 15.0, *) {
+            var config = UIButton.Configuration.tinted()
+            config.title = "Load More"
+            config.showsActivityIndicator = false
+            config.imagePadding = 4
+            confirmButton.configuration = config
+            confirmButton.configurationUpdateHandler = { [unowned self] button in
+                button.configuration?.showsActivityIndicator = self.isLoading
+            }
+        }
+    }
+    
+    override func prepareForReuse() {
+        super.prepareForReuse()
+        
+        isLoading = false
+        if #available(iOS 15.0, *) {
+            confirmButton.setNeedsUpdateConfiguration()
+        }
+    }
+    
+    @IBAction func loadMorePressed(_ sender: Any) {
+        confirmLoadMore?()
+        if #available(iOS 15.0, *) {
+            isLoading = true
+            confirmButton.setNeedsUpdateConfiguration()
+        }
+    }
+    
+}

Tusker/Views/Confirm Load More Cell/ConfirmLoadMoreTableViewCell.xib

@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="19115.3" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="19107.5"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="System colors in document resources" minToolsVersion="11.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <objects>
+        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
+        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
+        <tableViewCell contentMode="scaleToFill" selectionStyle="default" indentationWidth="10" rowHeight="105" id="KGk-i7-Jjw" customClass="ConfirmLoadMoreTableViewCell" customModule="Tusker" customModuleProvider="target">
+            <rect key="frame" x="0.0" y="0.0" width="320" height="105"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+            <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="KGk-i7-Jjw" id="H2p-sc-9uM">
+                <rect key="frame" x="0.0" y="0.0" width="320" height="105"/>
+                <autoresizingMask key="autoresizingMask"/>
+                <subviews>
+                    <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" spacing="4" translatesAutoresizingMaskIntoConstraints="NO" id="Rpx-45-c2n">
+                        <rect key="frame" x="16" y="11" width="288" height="86"/>
+                        <subviews>
+                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Infinite scrolling is off. Do you want to keep going?" textAlignment="natural" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="9nv-Re-5sL">
+                                <rect key="frame" x="0.0" y="0.0" width="288" height="41"/>
+                                <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                                <color key="textColor" systemColor="secondaryLabelColor"/>
+                                <nil key="highlightedColor"/>
+                            </label>
+                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="NT9-ly-efr">
+                                <rect key="frame" x="0.0" y="45" width="288" height="41"/>
+                                <state key="normal" title="Button"/>
+                                <buttonConfiguration key="configuration" style="tinted" title="Load More"/>
+                                <connections>
+                                    <action selector="loadMorePressed:" destination="KGk-i7-Jjw" eventType="touchUpInside" id="Pgz-MB-icB"/>
+                                </connections>
+                            </button>
+                        </subviews>
+                    </stackView>
+                </subviews>
+                <color key="backgroundColor" systemColor="secondarySystemBackgroundColor"/>
+                <constraints>
+                    <constraint firstItem="Rpx-45-c2n" firstAttribute="top" secondItem="H2p-sc-9uM" secondAttribute="topMargin" id="YfZ-rr-Omf"/>
+                    <constraint firstItem="Rpx-45-c2n" firstAttribute="leading" secondItem="H2p-sc-9uM" secondAttribute="leadingMargin" id="hhi-yX-Wa4"/>
+                    <constraint firstAttribute="trailingMargin" secondItem="Rpx-45-c2n" secondAttribute="trailing" id="jI8-St-34M"/>
+                    <constraint firstAttribute="bottom" secondItem="Rpx-45-c2n" secondAttribute="bottom" constant="8" id="mQh-0l-Eo2"/>
+                </constraints>
+            </tableViewCellContentView>
+            <viewLayoutGuide key="safeArea" id="njF-e1-oar"/>
+            <connections>
+                <outlet property="confirmButton" destination="NT9-ly-efr" id="Lja-th-LeH"/>
+            </connections>
+            <point key="canvasLocation" x="131.8840579710145" y="150.33482142857142"/>
+        </tableViewCell>
+    </objects>
+    <resources>
+        <systemColor name="secondaryLabelColor">
+            <color red="0.23529411764705882" green="0.23529411764705882" blue="0.2627450980392157" alpha="0.59999999999999998" colorSpace="custom" customColorSpace="sRGB"/>
+        </systemColor>
+        <systemColor name="secondarySystemBackgroundColor">
+            <color red="0.94901960784313721" green="0.94901960784313721" blue="0.96862745098039216" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+        </systemColor>
+    </resources>
+</document>

Tusker/Views/FastAccountSwitcherIndicatorView.swift

@@ -0,0 +1,30 @@
+//
+//  FastAccountSwitchingIndicatorView.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 6/6/21.
+//  Copyright © 2021 Shadowfacts. All rights reserved.
+//
+
+import UIKit
+
+class FastAccountSwitcherIndicatorView: UIView {
+    
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        
+        tintColor = .lightGray
+        
+        let up = UIImageView(image: UIImage(systemName: "arrowtriangle.up.fill")!)
+        up.frame = CGRect(x: 0, y: 0, width: 10, height: 5)
+        addSubview(up)
+        let down = UIImageView(image: UIImage(systemName: "arrowtriangle.down.fill")!)
+        down.frame = CGRect(x: 0, y: 7, width: 10, height: 5)
+        addSubview(down)
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+}

Tusker/Views/Poll/PollOptionView.swift

@@ -30,6 +30,7 @@ class PollOptionView: UIView {
         let label = EmojiLabel()
         label.translatesAutoresizingMaskIntoConstraints = false
         label.numberOfLines = 0
+        label.font = .preferredFont(forTextStyle: .callout)
         label.text = option.title
         label.setEmojis(poll.emojis, identifier: poll.id)
         addSubview(label)
@@ -37,15 +38,21 @@ class PollOptionView: UIView {
         let percentLabel = UILabel()
         percentLabel.translatesAutoresizingMaskIntoConstraints = false
         percentLabel.text = "100%"
+        percentLabel.font = label.font
         percentLabel.isHidden = true
+        percentLabel.setContentCompressionResistancePriority(.required, for: .horizontal)
+        percentLabel.setContentHuggingPriority(.required, for: .horizontal)
         addSubview(percentLabel)
         
+        accessibilityLabel = option.title
+        
         if (poll.voted ?? false) || poll.effectiveExpired,
            let optionVotes = option.votesCount {
             let frac = poll.votesCount == 0 ? 0 : CGFloat(optionVotes) / CGFloat(poll.votesCount)
+            let percent = String(format: "%.0f%%", frac * 100)
             
             percentLabel.isHidden = false
-            percentLabel.text = String(format: "%.0f%%", frac * 100)
+            percentLabel.text = percent
             
             let fillView = UIView()
             fillView.translatesAutoresizingMaskIntoConstraints = false
@@ -60,6 +67,8 @@ class PollOptionView: UIView {
                 fillView.topAnchor.constraint(equalTo: topAnchor),
                 fillView.bottomAnchor.constraint(equalTo: bottomAnchor),
             ])
+            
+            accessibilityLabel! += ", \(percent)"
         }
         
         let minHeightConstraint = heightAnchor.constraint(greaterThanOrEqualToConstant: minHeight)
@@ -76,12 +85,14 @@ class PollOptionView: UIView {
             label.topAnchor.constraint(equalTo: topAnchor),
             label.bottomAnchor.constraint(equalTo: bottomAnchor),
             label.leadingAnchor.constraint(equalTo: checkbox.trailingAnchor, constant: 8),
-            label.trailingAnchor.constraint(equalTo: percentLabel.leadingAnchor),
+            label.trailingAnchor.constraint(equalTo: percentLabel.leadingAnchor, constant: -4),
             
             percentLabel.topAnchor.constraint(equalTo: topAnchor),
             percentLabel.bottomAnchor.constraint(equalTo: bottomAnchor),
             percentLabel.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -8),
         ])
+        
+        isAccessibilityElement = true
     }
     
     required init?(coder: NSCoder) {

Tusker/Views/Poll/PollOptionsView.swift

@@ -69,6 +69,8 @@ class PollOptionsView: UIControl {
             stack.addArrangedSubview(optionView)
             return optionView
         }
+        
+        accessibilityElements = options
     }
     
     private func selectOption(_ option: PollOptionView) {

Tusker/Views/Poll/StatusPollView.swift

@@ -23,17 +23,20 @@ class StatusPollView: UIView {
     weak var mastodonController: MastodonController!
     
     private var statusID: String!
-    private var poll: Poll!
+    private(set) var poll: Poll?
     
     private var optionsView: PollOptionsView!
     private var voteButton: UIButton!
     private var infoLabel: UILabel!
-    private var options: [PollOptionView] = []
     
     private var canVote = true
     private var animator: UIViewPropertyAnimator!
     private var currentSelectedOptionIndex: Int!
     
+    var isTracking: Bool {
+        optionsView.isTracking
+    }
+    
     override func awakeFromNib() {
         super.awakeFromNib()
         
@@ -74,13 +77,15 @@ class StatusPollView: UIView {
             voteButton.topAnchor.constraint(equalTo: optionsView.bottomAnchor),
             voteButton.bottomAnchor.constraint(equalTo: bottomAnchor),
         ])
+        
+        accessibilityElements = [optionsView!, infoLabel!, voteButton!]
     }
     
-    func updateUI(status: StatusMO, poll: Poll) {
+    func updateUI(status: StatusMO, poll: Poll?) {
         self.statusID = status.id
         self.poll = poll
         
-        options.forEach { $0.removeFromSuperview() }
+        guard let poll = poll else { return }
         
         // poll.voted is nil if there is no user (e.g., public timeline), in which case the poll also cannot be voted upon
         if (poll.voted ?? true) || poll.expired || status.account.id == mastodonController.account.id {
@@ -138,7 +143,7 @@ class StatusPollView: UIView {
         
         UIImpactFeedbackGenerator(style: .medium).impactOccurred()
         
-        let request = Poll.vote(poll.id, choices: optionsView.checkedOptionIndices)
+        let request = Poll.vote(poll!.id, choices: optionsView.checkedOptionIndices)
         mastodonController.run(request) { (response) in
             switch response {
             case let .failure(error):

Tusker/Views/Profile Header/ProfileHeaderView.swift

@@ -12,8 +12,6 @@ import Combine
 
 protocol ProfileHeaderViewDelegate: TuskerNavigationDelegate {
     func profileHeader(_ headerView: ProfileHeaderView, selectedPostsIndexChangedTo newIndex: Int)
-    
-    func profileHeader(_ headerView: ProfileHeaderView, showMoreOptionsFor accountID: String, sourceView: UIView)
 }
 
 class ProfileHeaderView: UIView {
@@ -82,14 +80,14 @@ class ProfileHeaderView: UIView {
         cancellables = []
         
         mastodonController.persistentContainer.accountSubject
-            .filter { [weak self] in $0 == self?.accountID }
             .receive(on: DispatchQueue.main)
+            .filter { [weak self] in $0 == self?.accountID }
             .sink { [weak self] in self?.updateUI(for: $0) }
             .store(in: &cancellables)
         
         mastodonController.persistentContainer.relationshipSubject
-            .filter { [weak self] in $0 == self?.accountID }
             .receive(on: DispatchQueue.main)
+            .filter { [weak self] in $0 == self?.accountID }
             .sink { [weak self] (_) in self?.updateRelationship() }
             .store(in: &cancellables)
     }
@@ -134,6 +132,7 @@ class ProfileHeaderView: UIView {
         
         fieldNamesStackView.arrangedSubviews.forEach { $0.removeFromSuperview() }
         fieldValuesStackView.arrangedSubviews.forEach { $0.removeFromSuperview() }
+        var fieldAccessibilityElements = [Any]()
         for field in account.fields {
             let nameLabel = EmojiLabel()
             nameLabel.text = field.name
@@ -157,7 +156,18 @@ class ProfileHeaderView: UIView {
             fieldValuesStackView.addArrangedSubview(valueTextView)
             
             nameLabel.heightAnchor.constraint(equalTo: valueTextView.heightAnchor).isActive = true
+            fieldAccessibilityElements.append(nameLabel)
+            fieldAccessibilityElements.append(valueTextView)
         }
+        
+        accessibilityElements = [
+            displayNameLabel!,
+            usernameLabel!,
+            noteTextView!,
+        ] + fieldAccessibilityElements + [
+            moreButton!,
+            pagesSegmentedControl!,
+        ]
     }
     
     private func updateRelationship() {
@@ -193,11 +203,14 @@ class ProfileHeaderView: UIView {
                   let image = image,
                   self.accountID == accountID,
                   let transformedImage = ImageGrayscalifier.convertIfNecessary(url: avatarURL, image: image) else {
+                DispatchQueue.main.async {
+                    self?.avatarRequest = nil
+                }
                 return
             }
-            self.avatarRequest = nil
             
             DispatchQueue.main.async {
+                self.avatarRequest = nil
                 self.avatarImageView.image = transformedImage
             }
         }
@@ -207,11 +220,14 @@ class ProfileHeaderView: UIView {
                       let image = image,
                       self.accountID == accountID,
                       let transformedImage = ImageGrayscalifier.convertIfNecessary(url: header, image: image) else {
+                    DispatchQueue.main.async {
+                        self?.headerRequest = nil
+                    }
                     return
                 }
-                self.headerRequest = nil
                 
                 DispatchQueue.main.async {
+                    self.headerRequest = nil
                     self.headerImageView.image = transformedImage
                 }
             }

Tusker/Views/Status/BaseStatusTableViewCell.swift

@@ -94,8 +94,7 @@ class BaseStatusTableViewCell: UITableViewCell, MenuPreviewProvider {
         collapseButton.layer.masksToBounds = true
         collapseButton.layer.cornerRadius = 5
         
-        accessibilityElements = [displayNameLabel!, contentWarningLabel!, collapseButton!, contentTextView!, attachmentsView!]
-        attachmentsView.isAccessibilityElement = true
+        accessibilityElements = [displayNameLabel!, contentWarningLabel!, collapseButton!, contentTextView!, attachmentsView!, pollView!]
         
         moreButton.showsMenuAsPrimaryAction = true
         
@@ -107,8 +106,8 @@ class BaseStatusTableViewCell: UITableViewCell, MenuPreviewProvider {
     open func createObserversIfNecessary() {
         if statusUpdater == nil {
             statusUpdater = mastodonController.persistentContainer.statusSubject
-                .filter { [unowned self] in $0 == self.statusID }
                 .receive(on: DispatchQueue.main)
+                .filter { [unowned self] in $0 == self.statusID }
                 .sink { [unowned self] in
                     if let mastodonController = mastodonController,
                        let status = mastodonController.persistentContainer.status(for: $0) {
@@ -119,8 +118,8 @@ class BaseStatusTableViewCell: UITableViewCell, MenuPreviewProvider {
 
         if accountUpdater == nil {
             accountUpdater = mastodonController.persistentContainer.accountSubject
-                .filter { [unowned self] in $0 == self.accountID }
                 .receive(on: DispatchQueue.main)
+                .filter { [unowned self] in $0 == self.accountID }
                 .sink { [unowned self] in
                     if let mastodonController = mastodonController,
                        let account = mastodonController.persistentContainer.account(for: $0) {
@@ -157,8 +156,6 @@ class BaseStatusTableViewCell: UITableViewCell, MenuPreviewProvider {
         cardView.navigationDelegate = navigationDelegate
         
         attachmentsView.updateUI(status: status)
-        attachmentsView.isAccessibilityElement = status.attachments.count > 0
-        attachmentsView.accessibilityLabel = String(format: NSLocalizedString("%d attachments", comment: "status attachments count accessibility label"), status.attachments.count)
         
         updateStatusState(status: status)
         
@@ -213,15 +210,12 @@ class BaseStatusTableViewCell: UITableViewCell, MenuPreviewProvider {
         }
         
         // keep menu in sync with changed states e.g. bookmarked, muted
-        moreButton.menu = UIMenu(title: "", image: nil, identifier: nil, options: [], children: actionsForStatus(status, sourceView: moreButton))
+        // do not include reply action here, because the cell already contains a button for it
+        moreButton.menu = UIMenu(title: "", image: nil, identifier: nil, options: [], children: actionsForStatus(status, sourceView: moreButton, includeReply: false))
         
-        if let poll = status.poll {
-            pollView.isHidden = false
-            pollView.mastodonController = mastodonController
-            pollView.updateUI(status: status, poll: poll)
-        } else {
-            pollView.isHidden = true
-        }
+        pollView.isHidden = status.poll == nil
+        pollView.mastodonController = mastodonController
+        pollView.updateUI(status: status, poll: status.poll)
     }
     
     func updateUI(account: AccountMO) {
@@ -359,6 +353,7 @@ class BaseStatusTableViewCell: UITableViewCell, MenuPreviewProvider {
         contentTextView.isHidden = collapsed
         cardView.isHidden = cardView.card == nil || collapsed
         attachmentsView.isHidden = attachmentsView.attachments.count == 0 || collapsed
+        pollView.isHidden = pollView.poll == nil || collapsed
         
         let buttonImage = UIImage(systemName: collapsed ? "chevron.down" : "chevron.up")!
         

Tusker/Views/Status/ConversationMainStatusTableViewCell.swift

@@ -33,7 +33,21 @@ class ConversationMainStatusTableViewCell: BaseStatusTableViewCell {
 
         profileAccessibilityElement = UIAccessibilityElement(accessibilityContainer: self)
         profileAccessibilityElement.accessibilityFrameInContainerSpace = profileDetailContainerView.convert(profileDetailContainerView.frame, to: self)
-        accessibilityElements = [profileAccessibilityElement!, contentWarningLabel!, collapseButton!, contentTextView!, totalFavoritesButton!, totalReblogsButton!, timestampAndClientLabel!, replyButton!, favoriteButton!, reblogButton!, moreButton!]
+        accessibilityElements = [
+            profileAccessibilityElement!,
+            contentWarningLabel!,
+            collapseButton!,
+            contentTextView!,
+            attachmentsView!,
+            pollView!,
+            totalFavoritesButton!,
+            totalReblogsButton!,
+            timestampAndClientLabel!,
+            replyButton!,
+            favoriteButton!,
+            reblogButton!,
+            moreButton!,
+        ]
         
         contentTextView.defaultFont = .systemFont(ofSize: 18)
         

Tusker/Views/Status/TimelineStatusTableViewCell.swift

@@ -15,7 +15,7 @@ class TimelineStatusTableViewCell: BaseStatusTableViewCell {
     static let relativeDateFormatter: RelativeDateTimeFormatter = {
         let formatter = RelativeDateTimeFormatter()
         formatter.dateTimeStyle = .numeric
-        formatter.unitsStyle = .short
+        formatter.unitsStyle = .full
         return formatter
     }()
     
@@ -44,7 +44,7 @@ class TimelineStatusTableViewCell: BaseStatusTableViewCell {
         
         reblogLabel.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(reblogLabelPressed)))
 
-        accessibilityElements!.insert(reblogLabel!, at: 0)
+        isAccessibilityElement = true
         
         // todo: double check this on RTL layouts
         replyButton.imageView!.leadingAnchor.constraint(equalTo: contentTextView.leadingAnchor).isActive = true
@@ -59,8 +59,8 @@ class TimelineStatusTableViewCell: BaseStatusTableViewCell {
         
         if rebloggerAccountUpdater == nil {
             rebloggerAccountUpdater = mastodonController.persistentContainer.accountSubject
-                .filter { [unowned self] in $0 == self.rebloggerID }
                 .receive(on: DispatchQueue.main)
+                .filter { [unowned self] in $0 == self.rebloggerID }
                 .sink { [unowned self] in
                     if let mastodonController = self.mastodonController,
                        let reblogger = mastodonController.persistentContainer.account(for: $0) {
@@ -134,7 +134,6 @@ class TimelineStatusTableViewCell: BaseStatusTableViewCell {
     
     private func doUpdateTimestamp(status: StatusMO) {
         timestampLabel.text = status.createdAt.timeAgoString()
-        timestampLabel.accessibilityLabel = TimelineStatusTableViewCell.relativeDateFormatter.localizedString(for: status.createdAt, relativeTo: Date())
         
         let delay: DispatchTimeInterval?
         switch status.createdAt.timeAgo().1 {
@@ -193,6 +192,38 @@ class TimelineStatusTableViewCell: BaseStatusTableViewCell {
             actions: { self.actionsForStatus(status, sourceView: self) }
         )
     }
+    
+    // MARK: - Accessibility
+    
+    override var accessibilityLabel: String? {
+        get {
+            guard let status = mastodonController.persistentContainer.status(for: statusID) else {
+                return nil
+            }
+            var str = "\(status.account.displayName), \(contentTextView.text ?? "")"
+            
+            if status.attachments.count > 0 {
+                // todo: localize me
+                str += ", \(status.attachments.count) attachments"
+            }
+            if status.poll != nil {
+                str += ", poll"
+            }
+            str += ", \(TimelineStatusTableViewCell.relativeDateFormatter.localizedString(for: status.createdAt, relativeTo: Date()))"
+            if let rebloggerID = rebloggerID,
+               let reblogger = mastodonController.persistentContainer.account(for: rebloggerID) {
+                str += ", reblogged by \(reblogger.displayName)"
+            }
+            
+            return str
+        }
+        set {}
+    }
+    
+    override func accessibilityActivate() -> Bool {
+        didSelectCell()
+        return true
+    }
 
 }
 
@@ -295,8 +326,11 @@ extension TimelineStatusTableViewCell: TableViewSwipeActionProvider {
 
 extension TimelineStatusTableViewCell: DraggableTableViewCell {
     func dragItemsForBeginning(session: UIDragSession) -> [UIDragItem] {
+        // the poll options view is tracking while the user is dragging between options
+        // while that's happening, don't initiate a drag
         guard let status = mastodonController.persistentContainer.status(for: statusID),
-              let accountID = mastodonController.accountInfo?.id else {
+              let accountID = mastodonController.accountInfo?.id,
+              !pollView.isTracking else {
             return []
         }
         let provider = NSItemProvider(object: status.url! as NSURL)
@@ -314,4 +348,19 @@ extension TimelineStatusTableViewCell: UIContextMenuInteractionDelegate {
             return UIMenu(title: "", image: nil, identifier: nil, options: [], children: self.actionsForProfile(accountID: self.accountID, sourceView: self.avatarImageView))
         }
     }
+    
+    func contextMenuInteraction(_ interaction: UIContextMenuInteraction, willPerformPreviewActionForMenuWith configuration: UIContextMenuConfiguration, animator: UIContextMenuInteractionCommitAnimating) {
+        if let viewController = animator.previewViewController,
+           let delegate = navigationDelegate {
+            animator.preferredCommitStyle = .pop
+            animator.addCompletion {
+                if let customPresenting = viewController as? CustomPreviewPresenting {
+                    customPresenting.presentFromPreview(presenter: delegate)
+                } else {
+                    delegate.show(viewController)
+                }
+            }
+        }
+    }
+
 }

Tusker/Views/Status/TimelineStatusTableViewCell.xib

@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="18122" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="19115.2" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
     <device id="retina4_7" orientation="portrait" appearance="light"/>
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="18093"/>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="19107.4"/>
         <capability name="Safe area layout guides" minToolsVersion="9.0"/>
         <capability name="System colors in document resources" minToolsVersion="11.0"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
@@ -38,7 +39,7 @@
                                     </constraints>
                                 </imageView>
                                 <stackView opaque="NO" contentMode="scaleToFill" verticalCompressionResistancePriority="751" axis="vertical" spacing="4" translatesAutoresizingMaskIntoConstraints="NO" id="gIY-Wp-RSk">
-                                    <rect key="frame" x="58" y="0.0" width="277" height="169.5"/>
+                                    <rect key="frame" x="58" y="0.0" width="277" height="173.5"/>
                                     <subviews>
                                         <stackView opaque="NO" contentMode="scaleToFill" spacing="4" translatesAutoresizingMaskIntoConstraints="NO" id="3Sm-P0-ySf">
                                             <rect key="frame" x="0.0" y="0.0" width="277" height="20.5"/>
@@ -132,13 +133,19 @@
                                             <rect key="frame" x="0.0" y="169.5" width="277" height="0.0"/>
                                             <color key="backgroundColor" systemColor="systemBackgroundColor"/>
                                         </view>
+                                        <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="1" verticalCompressionResistancePriority="1" text="" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="oFl-rC-EEN">
+                                            <rect key="frame" x="0.0" y="173.5" width="277" height="0.0"/>
+                                            <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                                            <nil key="textColor"/>
+                                            <nil key="highlightedColor"/>
+                                        </label>
                                     </subviews>
                                 </stackView>
                                 <stackView opaque="NO" contentMode="scaleToFill" distribution="equalSpacing" spacing="5" translatesAutoresizingMaskIntoConstraints="NO" id="oie-wK-IpU">
                                     <rect key="frame" x="0.0" y="54" width="50" height="22"/>
                                     <subviews>
                                         <imageView clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleAspectFit" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="bubble.left.and.bubble.right" catalog="system" translatesAutoresizingMaskIntoConstraints="NO" id="KdQ-Zn-IhD">
-                                            <rect key="frame" x="0.0" y="1" width="25.5" height="21.5"/>
+                                            <rect key="frame" x="0.0" y="0.0" width="25.5" height="21.5"/>
                                             <color key="tintColor" systemColor="secondaryLabelColor"/>
                                             <accessibility key="accessibilityConfiguration" label="Is a reply"/>
                                             <constraints>
@@ -218,7 +225,7 @@
                                 <constraint firstItem="gIY-Wp-RSk" firstAttribute="leading" secondItem="QMP-j2-HLn" secondAttribute="trailing" constant="8" id="0Tm-v7-Ts4"/>
                                 <constraint firstAttribute="bottom" relation="greaterThanOrEqual" secondItem="QMP-j2-HLn" secondAttribute="bottom" constant="8" id="2Ao-Gj-fY3"/>
                                 <constraint firstItem="TUP-Nz-5Yh" firstAttribute="trailing" secondItem="ve3-Y1-NQH" secondAttribute="trailingMargin" id="3l0-tE-Ak1"/>
-                                <constraint firstItem="TUP-Nz-5Yh" firstAttribute="top" secondItem="gIY-Wp-RSk" secondAttribute="bottom" id="4KL-a3-qyf"/>
+                                <constraint firstItem="TUP-Nz-5Yh" firstAttribute="top" secondItem="gIY-Wp-RSk" secondAttribute="bottom" constant="-4" id="4KL-a3-qyf"/>
                                 <constraint firstItem="oie-wK-IpU" firstAttribute="top" secondItem="QMP-j2-HLn" secondAttribute="bottom" constant="4" id="7Mp-WS-FhY"/>
                                 <constraint firstItem="TUP-Nz-5Yh" firstAttribute="bottom" relation="greaterThanOrEqual" secondItem="oie-wK-IpU" secondAttribute="bottom" id="7Xp-Sa-Rfk"/>
                                 <constraint firstItem="QMP-j2-HLn" firstAttribute="top" secondItem="ve3-Y1-NQH" secondAttribute="top" id="PC4-Bi-QXm"/>
@@ -276,7 +283,7 @@
         <image name="ellipsis" catalog="system" width="128" height="37"/>
         <image name="globe" catalog="system" width="128" height="121"/>
         <image name="pin.fill" catalog="system" width="119" height="128"/>
-        <image name="repeat" catalog="system" width="128" height="99"/>
+        <image name="repeat" catalog="system" width="128" height="98"/>
         <image name="star.fill" catalog="system" width="128" height="116"/>
         <systemColor name="labelColor">
             <color white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>

Tusker/Views/VisualEffectImageButton.swift

@@ -55,6 +55,8 @@ class VisualEffectImageButton: UIControl {
         addInteraction(UIContextMenuInteraction(delegate: self))
         
         addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(onTap)))
+        
+        isAccessibilityElement = true
     }
     
     @objc private func onTap() {