Emoji picker: Implement coordinator bridge presenter.

2026-04-21 17:12:45 +02:00 · 2019-07-25 16:45:20 +02:00
parent d6449abbae
commit 2a493b8cee
1 changed files with 117 additions and 0 deletions
@@ -0,0 +1,117 @@
+/*
+ Copyright 2019 New Vector Ltd
+ 
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ 
+ http://www.apache.org/licenses/LICENSE-2.0
+ 
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+import UIKit
+
+@objc protocol EmojiPickerCoordinatorBridgePresenterDelegate {
+    func emojiPickerCoordinatorBridgePresenter(_ coordinatorBridgePresenter: EmojiPickerCoordinatorBridgePresenter, didAddEmoji emoji: String, forEventId eventId: String)
+    func emojiPickerCoordinatorBridgePresenter(_ coordinatorBridgePresenter: EmojiPickerCoordinatorBridgePresenter, didRemoveEmoji emoji: String, forEventId eventId: String)
+    func emojiPickerCoordinatorBridgePresenterDidCancel(_ coordinatorBridgePresenter: EmojiPickerCoordinatorBridgePresenter)
+}
+
+/// EmojiPickerCoordinatorBridgePresenter enables to start EmojiPickerCoordinator from a view controller.
+/// This bridge is used while waiting for global usage of coordinator pattern.
+@objcMembers
+final class EmojiPickerCoordinatorBridgePresenter: NSObject {
+    
+    // MARK: - Properties
+    
+    // MARK: Private
+    
+    private let session: MXSession
+    private let roomId: String
+    private let eventId: String
+    private var coordinator: EmojiPickerCoordinator?
+    
+    // MARK: Public
+    
+    weak var delegate: EmojiPickerCoordinatorBridgePresenterDelegate?
+    
+    // MARK: - Setup
+    
+    init(session: MXSession, roomId: String, eventId: String) {
+        self.session = session
+        self.roomId = roomId
+        self.eventId = eventId
+        super.init()
+    }
+    
+    // MARK: - Public
+    
+    func present(from viewController: UIViewController,
+                 sourceView: UIView?,
+                 sourceRect: CGRect,
+                 animated: Bool) {
+        let emojiPickerCoordinator = EmojiPickerCoordinator(session: self.session, roomId: self.roomId, eventId: self.eventId)
+        emojiPickerCoordinator.delegate = self
+        
+        let emojiPickerPresentable = emojiPickerCoordinator.toPresentable()
+        
+        if let sourceView = sourceView {
+            
+            emojiPickerPresentable.modalPresentationStyle = .popover
+            
+            if let popoverPresentationController = emojiPickerPresentable.popoverPresentationController {
+                popoverPresentationController.sourceView = sourceView
+                
+                let finalSourceRect: CGRect
+                
+                if sourceRect != CGRect.null {
+                    finalSourceRect = sourceRect
+                } else {
+                    finalSourceRect = sourceView.bounds
+                }
+                
+                popoverPresentationController.sourceRect = finalSourceRect
+            }
+        }
+        
+        viewController.present(emojiPickerPresentable, animated: animated, completion: nil)
+        
+        emojiPickerCoordinator.start()
+        
+        self.coordinator = emojiPickerCoordinator
+    }
+    
+    func dismiss(animated: Bool, completion: (() -> Void)?) {
+        guard let coordinator = self.coordinator else {
+            return
+        }
+        coordinator.toPresentable().dismiss(animated: animated) {
+            self.coordinator = nil
+            
+            if let completion = completion {
+                completion()
+            }
+        }
+    }
+}
+
+// MARK: - EmojiPickerCoordinatorDelegate
+extension EmojiPickerCoordinatorBridgePresenter: EmojiPickerCoordinatorDelegate {
+    
+    func emojiPickerCoordinator(_ coordinator: EmojiPickerCoordinatorType, didAddEmoji emoji: String, forEventId eventId: String) {
+        self.delegate?.emojiPickerCoordinatorBridgePresenter(self, didAddEmoji: emoji, forEventId: eventId)
+    }
+    
+    func emojiPickerCoordinator(_ coordinator: EmojiPickerCoordinatorType, didRemoveEmoji emoji: String, forEventId eventId: String) {
+        self.delegate?.emojiPickerCoordinatorBridgePresenter(self, didRemoveEmoji: emoji, forEventId: eventId)
+    }
+    
+    func emojiPickerCoordinatorDidCancel(_ coordinator: EmojiPickerCoordinatorType) {
+        self.delegate?.emojiPickerCoordinatorBridgePresenterDidCancel(self)
+    }
+}