feat: add select button and delete function in media title screen

Session/Media Viewing & Editing/AllMediaViewController.swift

@@ -18,10 +18,13 @@ public class AllMediaViewController: UIViewController, UIPageViewControllerDataS
             TabBar.Tab(title: MediaStrings.media) { [weak self] in
                 guard let self = self else { return }
                 self.pageVC.setViewControllers([ self.pages[0] ], direction: .forward, animated: false, completion: nil)
+                self.updateSelectButton(updatedData: self.mediaTitleViewController.viewModel.galleryData, inBatchSelectMode: self.mediaTitleViewController.isInBatchSelectMode)
             },
             TabBar.Tab(title: MediaStrings.document) { [weak self] in
                 guard let self = self else { return }
                 self.pageVC.setViewControllers([ self.pages[1] ], direction: .forward, animated: false, completion: nil)
+                self.endSelectMode()
+                self.navigationItem.rightBarButtonItem = nil
             }
         ]
         return TabBar(tabs: tabs)
@@ -99,6 +102,24 @@ public class AllMediaViewController: UIViewController, UIPageViewControllerDataS
     @objc public func didPressDismissButton() {
         dismiss(animated: true, completion: nil)
     }
+    
+    // MARK: Batch Selection
+    @objc func didTapSelect(_ sender: Any) {
+        self.mediaTitleViewController.didTapSelect(sender)
+
+        // Don't allow the user to leave mid-selection, so they realized they have
+        // to cancel (lose) their selection if they leave.
+        self.navigationItem.hidesBackButton = true
+    }
+
+    @objc func didCancelSelect(_ sender: Any) {
+        endSelectMode()
+    }
+
+    func endSelectMode() {
+        self.mediaTitleViewController.endSelectMode()
+        self.navigationItem.hidesBackButton = false
+    }
 }
 
 // MARK: - UIDocumentInteractionControllerDelegate
@@ -138,6 +159,29 @@ extension AllMediaViewController: MediaTileViewControllerDelegate {
     public func presentdetailViewController(_ detailViewController: UIViewController, animated: Bool) {
         self.present(detailViewController, animated: animated)
     }
+    
+    public func updateSelectButton(updatedData: [MediaGalleryViewModel.SectionModel], inBatchSelectMode: Bool) {
+        guard !updatedData.isEmpty else {
+            self.navigationItem.rightBarButtonItem = nil
+            return
+        }
+        
+        if inBatchSelectMode {
+            self.navigationItem.rightBarButtonItem = UIBarButtonItem(
+                barButtonSystemItem: .cancel,
+                target: self,
+                action: #selector(didCancelSelect)
+            )
+        }
+        else {
+            self.navigationItem.rightBarButtonItem = UIBarButtonItem(
+                title: "BUTTON_SELECT".localized(),
+                style: .plain,
+                target: self,
+                action: #selector(didTapSelect)
+            )
+        }
+    }
 }
 
 // MARK: - MediaPresentationContextProvider

Session/Media Viewing & Editing/MediaTileViewController.swift

@@ -271,6 +271,7 @@ public class MediaTileViewController: UIViewController, UICollectionViewDataSour
         guard hasLoadedInitialData else {
             self.hasLoadedInitialData = true
             self.viewModel.updateGalleryData(updatedGalleryData)
+            self.updateSelectButton(updatedData: updatedGalleryData, inBatchSelectMode: isInBatchSelectMode)
             
             UIView.performWithoutAnimation {
                 self.collectionView.reloadData()
@@ -586,26 +587,7 @@ public class MediaTileViewController: UIViewController, UICollectionViewDataSour
     }
 
     func updateSelectButton(updatedData: [MediaGalleryViewModel.SectionModel], inBatchSelectMode: Bool) {
-        guard !updatedData.isEmpty else {
-            self.navigationItem.rightBarButtonItem = nil
-            return
-        }
-        
-        if inBatchSelectMode {
-            self.navigationItem.rightBarButtonItem = UIBarButtonItem(
-                barButtonSystemItem: .cancel,
-                target: self,
-                action: #selector(didCancelSelect)
-            )
-        }
-        else {
-            self.navigationItem.rightBarButtonItem = UIBarButtonItem(
-                title: "BUTTON_SELECT".localized(),
-                style: .plain,
-                target: self,
-                action: #selector(didTapSelect)
-            )
-        }
+        delegate?.updateSelectButton(updatedData: updatedData, inBatchSelectMode: inBatchSelectMode)
     }
 
     @objc func didTapSelect(_ sender: Any) {
@@ -620,13 +602,6 @@ public class MediaTileViewController: UIViewController, UICollectionViewDataSour
             // Ensure toolbar doesn't cover bottom row.
             self?.collectionView.contentInset.bottom += MediaTileViewController.footerBarHeight
         }, completion: nil)
-
-        // disabled until at least one item is selected
-        self.deleteButton.isEnabled = false
-
-        // Don't allow the user to leave mid-selection, so they realized they have
-        // to cancel (lose) their selection if they leave.
-        self.navigationItem.hidesBackButton = true
     }
 
     @objc func didCancelSelect(_ sender: Any) {
@@ -646,8 +621,6 @@ public class MediaTileViewController: UIViewController, UICollectionViewDataSour
             self?.collectionView.contentInset.bottom -= MediaTileViewController.footerBarHeight
         }, completion: nil)
 
-        self.navigationItem.hidesBackButton = false
-
         // Deselect any selected
         collectionView.indexPathsForSelectedItems?.forEach { collectionView.deselectItem(at: $0, animated: false)}
     }
@@ -924,4 +897,5 @@ extension MediaTileViewController: MediaPresentationContextProvider {
 
 public protocol MediaTileViewControllerDelegate: AnyObject {
     func presentdetailViewController(_ detailViewController: UIViewController, animated: Bool)
+    func updateSelectButton(updatedData: [MediaGalleryViewModel.SectionModel], inBatchSelectMode: Bool)
 }