Don't show Follow activity for user's own account

Tusker/Screens/Compose/ComposeAttachmentsViewController.swift

@@ -315,6 +315,15 @@ class ComposeAttachmentsViewController: UITableViewController {
                     actions.append(UIAction(title: "Edit Drawing", image: UIImage(systemName: "hand.draw"), identifier: nil, discoverabilityTitle: nil, attributes: [], state: .off, handler: { (_) in
                         self.presentComposeDrawingViewController(editingAttachmentAt: indexPath.row)
                     }))
+                case .asset(_), .image(_):
+                    if attachment.data.type == .image,
+                        let cell = tableView.cellForRow(at: indexPath) as? ComposeAttachmentTableViewCell {
+                        
+                        let title = NSLocalizedString("Recognize Text", comment: "recognize image attachment text menu item title")
+                        actions.append(UIAction(title: title, image: UIImage(systemName: "doc.text.viewfinder"), identifier: nil, discoverabilityTitle: nil, attributes: [], state: .off, handler: { (_) in
+                            cell.recognizeTextFromImage()
+                        }))
+                    }
                 default:
                     break
                 }
@@ -503,6 +512,10 @@ extension ComposeAttachmentsViewController: AssetPickerViewControllerDelegate {
 }
 
 extension ComposeAttachmentsViewController: ComposeAttachmentTableViewCellDelegate {
+    func composeAttachment(_ cell: ComposeAttachmentTableViewCell, present viewController: UIViewController, animated: Bool) {
+        self.present(viewController, animated: animated)
+    }
+    
     func removeAttachment(_ cell: ComposeAttachmentTableViewCell) {
         guard let indexPath = tableView.indexPath(for: cell) else { return }
         attachments.remove(at: indexPath.row)
@@ -518,6 +531,12 @@ extension ComposeAttachmentsViewController: ComposeAttachmentTableViewCellDelega
     func attachmentDescriptionChanged(_ cell: ComposeAttachmentTableViewCell) {
         delegate?.composeRequiresAttachmentDescriptionsDidChange()
     }
+    
+    func composeAttachmentDescriptionHeightChanged(_ cell: ComposeAttachmentTableViewCell) {
+        tableView.performBatchUpdates(nil) { (_) in
+            self.updateHeightConstraint()
+        }
+    }
 }
 
 extension ComposeAttachmentsViewController: ComposeDrawingViewControllerDelegate {

Tusker/Screens/Profile/ProfileTableViewController.swift

@@ -303,19 +303,27 @@ extension ProfileTableViewController: ProfileHeaderTableViewCellDelegate {
     func showMoreOptions(cell: ProfileHeaderTableViewCell) {
         let account = mastodonController.persistentContainer.account(for: accountID)!
         
-        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 {
-                let activityController = UIActivityViewController(activityItems: [account.url, AccountActivityItemSource(account)], applicationActivities: customActivities)
-                activityController.completionWithItemsHandler = OpenInSafariActivity.completionHandler(viewController: self, url: account.url)
-                activityController.popoverPresentationController?.sourceView = cell.moreButtonVisualEffectView
-                self.present(activityController, animated: true)
+        func showActivityController(activities: [UIActivity]) {
+            let activityController = UIActivityViewController(activityItems: [account.url, AccountActivityItemSource(account)], applicationActivities: activities)
+            activityController.completionWithItemsHandler = OpenInSafariActivity.completionHandler(viewController: self, url: account.url)
+            activityController.popoverPresentationController?.sourceView = cell.moreButtonVisualEffectView
+            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)
+                }
             }
         }
     }

Tusker/Views/Attachment Cells/ComposeAttachmentTableViewCell.swift

@@ -9,10 +9,13 @@
 import UIKit
 import Photos
 import AVFoundation
+import Vision
 
 protocol ComposeAttachmentTableViewCellDelegate: class {
+    func composeAttachment(_ cell: ComposeAttachmentTableViewCell, present viewController: UIViewController, animated: Bool)
     func removeAttachment(_ cell: ComposeAttachmentTableViewCell)
     func attachmentDescriptionChanged(_ cell: ComposeAttachmentTableViewCell)
+    func composeAttachmentDescriptionHeightChanged(_ cell: ComposeAttachmentTableViewCell)
 }
 
 class ComposeAttachmentTableViewCell: UITableViewCell {
@@ -21,11 +24,30 @@ class ComposeAttachmentTableViewCell: UITableViewCell {
 
     @IBOutlet weak var assetImageView: UIImageView!
     @IBOutlet weak var descriptionTextView: UITextView!
+    @IBOutlet weak var descriptionTextViewHeightConstraint: NSLayoutConstraint!
     @IBOutlet weak var descriptionPlaceholderLabel: UILabel!
     @IBOutlet weak var removeButton: UIButton!
+    @IBOutlet weak var activityIndicator: UIActivityIndicatorView!
     
     var attachment: CompositionAttachment!
     
+    var state: State = .allowEntry {
+        didSet {
+            switch state {
+            case .allowEntry:
+                descriptionTextView.isEditable = true
+                updateDescriptionPlaceholderLabel()
+                activityIndicator.stopAnimating()
+            case .recognizingText:
+                descriptionTextView.isEditable = false
+                descriptionPlaceholderLabel.isHidden = true
+                activityIndicator.startAnimating()
+            }
+        }
+    }
+    
+    private var textRecognitionRequest: VNRecognizeTextRequest?
+
     override func awakeFromNib() {
         super.awakeFromNib()
         
@@ -74,21 +96,81 @@ class ComposeAttachmentTableViewCell: UITableViewCell {
         removeButton.isEnabled = enabled
     }
     
+    func recognizeTextFromImage() {
+        precondition(attachment.data.type == .image)
+        state = .recognizingText
+        
+        DispatchQueue.global(qos: .userInitiated).async {
+            self.attachment.data.getData { (data, mimeType) in
+                let handler = VNImageRequestHandler(data: data, options: [:])
+                let request = VNRecognizeTextRequest { (request, error) in
+                    DispatchQueue.main.async {
+                        self.state = .allowEntry
+    
+                        if let results = request.results as? [VNRecognizedTextObservation] {
+                            var text = ""
+                            for observation in results {
+                                let result = observation.topCandidates(1).first!
+                                text.append(result.string)
+                                text.append("\n")
+                            }
+                            self.descriptionTextView.text = text
+                            self.textViewDidChange(self.descriptionTextView)
+                        }
+                    }
+                }
+                request.recognitionLevel = .accurate
+                request.usesLanguageCorrection = true
+                self.textRecognitionRequest = request
+                DispatchQueue.global(qos: .userInitiated).async {
+                    do {
+                        try handler.perform([request])
+                    } catch {
+                        // The perform call throws an error with code 1 if the request is cancelled, which we don't want to show an alert for.
+                        guard (error as NSError).code != 1 else { return }
+                        DispatchQueue.main.async {
+                            self.state = .allowEntry
+                            let title = NSLocalizedString("Text Recognition Failed", comment: "text recognition error alert title")
+                            let message = error.localizedDescription
+                            let alert = UIAlertController(title: title, message: message, preferredStyle: .alert)
+                            self.delegate?.composeAttachment(self, present: alert, animated: true)
+                        }
+                    }
+                }
+            }
+        }
+    }
+    
     override func prepareForReuse() {
         super.prepareForReuse()
         assetImageView.image = nil
+        descriptionTextViewHeightConstraint.constant = 80
     }
 
     @IBAction func removeButtonPressed(_ sender: Any) {
+        textRecognitionRequest?.cancel()
         delegate?.removeAttachment(self)
     }
     
 }
 
+extension ComposeAttachmentTableViewCell {
+    enum State {
+        case allowEntry, recognizingText
+    }
+}
+
 extension ComposeAttachmentTableViewCell: UITextViewDelegate {
     func textViewDidChange(_ textView: UITextView) {
         attachment.attachmentDescription = textView.text
         updateDescriptionPlaceholderLabel()
         delegate?.attachmentDescriptionChanged(self)
+        let smallestSize = textView.sizeThatFits(CGSize(width: textView.bounds.width, height: .greatestFiniteMagnitude))
+        let old = descriptionTextViewHeightConstraint.constant
+        descriptionTextViewHeightConstraint.constant = max(80, smallestSize.height)
+        if old != descriptionTextViewHeightConstraint.constant {
+            delegate?.composeAttachmentDescriptionHeightChanged(self)
+        }
+
     }
 }

Tusker/Views/Attachment Cells/ComposeAttachmentTableViewCell.xib

@@ -36,6 +36,9 @@
                             <textView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" scrollEnabled="NO" textAlignment="natural" translatesAutoresizingMaskIntoConstraints="NO" id="cwP-Eh-5dJ">
                                 <rect key="frame" x="84" y="0.0" width="194" height="80"/>
                                 <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                <constraints>
+                                    <constraint firstAttribute="height" relation="greaterThanOrEqual" constant="80" id="6aZ-w8-j9n"/>
+                                </constraints>
                                 <color key="textColor" systemColor="labelColor" cocoaTouchSystemColor="darkTextColor"/>
                                 <fontDescription key="fontDescription" type="system" pointSize="17"/>
                                 <textInputTraits key="textInputTraits" autocapitalizationType="sentences"/>
@@ -57,6 +60,9 @@
                             <constraint firstAttribute="height" relation="greaterThanOrEqual" constant="80" id="jWo-An-3h6"/>
                         </constraints>
                     </stackView>
+                    <activityIndicatorView hidden="YES" opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" hidesWhenStopped="YES" style="medium" translatesAutoresizingMaskIntoConstraints="NO" id="Kzy-5r-UW8">
+                        <rect key="frame" x="179" y="38" width="20" height="20"/>
+                    </activityIndicatorView>
                 </subviews>
                 <constraints>
                     <constraint firstAttribute="bottom" secondItem="xRe-ec-Coh" secondAttribute="bottom" constant="8" id="DOS-Wv-G3s"/>
@@ -64,15 +70,19 @@
                     <constraint firstItem="h6T-x4-yzl" firstAttribute="trailing" secondItem="cwP-Eh-5dJ" secondAttribute="trailing" constant="4" id="KN2-Ve-3B2"/>
                     <constraint firstItem="h6T-x4-yzl" firstAttribute="top" secondItem="cwP-Eh-5dJ" secondAttribute="top" constant="8" id="P3B-Jo-XMs"/>
                     <constraint firstItem="h6T-x4-yzl" firstAttribute="leading" secondItem="cwP-Eh-5dJ" secondAttribute="leading" constant="4" id="UjP-Gs-ZjO"/>
+                    <constraint firstItem="Kzy-5r-UW8" firstAttribute="centerX" secondItem="cwP-Eh-5dJ" secondAttribute="centerX" id="czP-Ia-Ddc"/>
+                    <constraint firstItem="Kzy-5r-UW8" firstAttribute="centerY" secondItem="cwP-Eh-5dJ" secondAttribute="centerY" id="eel-xx-aFq"/>
                     <constraint firstItem="xRe-ec-Coh" firstAttribute="leading" secondItem="H2p-sc-9uM" secondAttribute="leading" constant="8" id="gRN-PV-gm6"/>
                     <constraint firstAttribute="trailing" secondItem="xRe-ec-Coh" secondAttribute="trailing" constant="8" id="tyE-HK-4qb"/>
                 </constraints>
             </tableViewCellContentView>
             <viewLayoutGuide key="safeArea" id="njF-e1-oar"/>
             <connections>
+                <outlet property="activityIndicator" destination="Kzy-5r-UW8" id="lmy-NY-Owu"/>
                 <outlet property="assetImageView" destination="GLY-o8-47z" id="hZH-ur-m4z"/>
                 <outlet property="descriptionPlaceholderLabel" destination="h6T-x4-yzl" id="jBe-R0-Sfn"/>
                 <outlet property="descriptionTextView" destination="cwP-Eh-5dJ" id="pxJ-zF-GKC"/>
+                <outlet property="descriptionTextViewHeightConstraint" destination="6aZ-w8-j9n" id="ees-sT-Trc"/>
                 <outlet property="removeButton" destination="Lvf-I9-aV3" id="3qk-Zr-je1"/>
             </connections>
             <point key="canvasLocation" x="107" y="181"/>