From 3b132ab4dcb3600ac2f9336fc5b991f8d4d1174a Mon Sep 17 00:00:00 2001
From: Shadowfacts <me@shadowfacts.net>
Date: Wed, 24 Nov 2021 15:12:23 -0500
Subject: [PATCH] Enable context menus and drag and drop for trending hashtags

---
 .../TrendingHashtagsViewController.swift      | 37 ++++++++++++++++++-
 1 file changed, 35 insertions(+), 2 deletions(-)

diff --git a/Tusker/Screens/Explore/TrendingHashtagsViewController.swift b/Tusker/Screens/Explore/TrendingHashtagsViewController.swift
index 080887fa4d..4b06db0f82 100644
--- a/Tusker/Screens/Explore/TrendingHashtagsViewController.swift
+++ b/Tusker/Screens/Explore/TrendingHashtagsViewController.swift
@@ -19,6 +19,8 @@ class TrendingHashtagsViewController: EnhancedTableViewController {
         self.mastodonController = mastodonController
         
         super.init(style: .grouped)
+        
+        dragEnabled = true
     }
     
     required init?(coder: NSCoder) {
@@ -33,8 +35,6 @@ class TrendingHashtagsViewController: EnhancedTableViewController {
         tableView.register(UINib(nibName: "TrendingHashtagTableViewCell", bundle: .main), forCellReuseIdentifier: "trendingTagCell")
         tableView.rowHeight = 60 // 44 for content + 2 * 8 spacing
         
-        // todo: enable drag
-        
         dataSource = UITableViewDiffableDataSource<Section, Item>(tableView: tableView) { (tableView, indexPath, item) in
             switch item {
             case let .tag(hashtag):
@@ -75,6 +75,31 @@ class TrendingHashtagsViewController: EnhancedTableViewController {
         show(HashtagTimelineViewController(for: hashtag, mastodonController: mastodonController), sender: nil)
     }
     
+    override func tableView(_ tableView: UITableView, contextMenuConfigurationForRowAt indexPath: IndexPath, point: CGPoint) -> UIContextMenuConfiguration? {
+        guard let item = dataSource.itemIdentifier(for: indexPath),
+              case let .tag(hashtag) = item else {
+                  return nil
+              }
+        return UIContextMenuConfiguration(identifier: nil) {
+            HashtagTimelineViewController(for: hashtag, mastodonController: self.mastodonController)
+        } actionProvider: { (_) in
+            UIMenu(children: self.actionsForHashtag(hashtag, sourceView: self.tableView.cellForRow(at: indexPath)))
+        }
+
+    }
+    
+    override func tableView(_ tableView: UITableView, itemsForBeginning session: UIDragSession, at indexPath: IndexPath) -> [UIDragItem] {
+        guard let item = dataSource.itemIdentifier(for: indexPath),
+              case let .tag(hashtag) = item else {
+                  return []
+              }
+        let provider = NSItemProvider(object: hashtag.url as NSURL)
+        if let activity = UserActivityManager.showTimelineActivity(timeline: .tag(hashtag: hashtag.name), accountID: mastodonController.accountInfo!.id) {
+            provider.registerObject(activity, visibility: .all)
+        }
+        return [UIDragItem(itemProvider: provider)]
+    }
+    
 }
 
 extension TrendingHashtagsViewController {
@@ -85,3 +110,11 @@ extension TrendingHashtagsViewController {
         case tag(Hashtag)
     }
 }
+
+extension TrendingHashtagsViewController: TuskerNavigationDelegate {
+    var apiController: MastodonController { mastodonController }
+}
+
+extension TrendingHashtagsViewController: MenuPreviewProvider {
+    var navigationDelegate: TuskerNavigationDelegate? { self }
+}