Create RoomContextualMenuPresenter

2026-04-19 08:03:50 +02:00 · 2019-05-15 23:10:07 +02:00
parent b05f7447da
commit e12c5f64b0
1 changed files with 105 additions and 0 deletions
@@ -0,0 +1,105 @@
+/*
+ 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 Foundation
+
+@objcMembers
+final class RoomContextualMenuPresenter: NSObject {
+    
+    // MARK: - Constants
+    
+    private enum Constants {
+        static let animationDuration: TimeInterval = 0.3
+    }
+    
+    // MARK: - Properties
+    
+    // MARK: Private
+    
+    private weak var roomContextualMenuViewController: RoomContextualMenuViewController?
+    
+    // MARK: Public
+    
+    var isPresenting: Bool {
+        return self.roomContextualMenuViewController != nil
+    }
+    
+    // MARK: - Public
+        
+    func present(roomContextualMenuViewController: RoomContextualMenuViewController,
+                 from viewController: UIViewController,
+                 on view: UIView,
+                 animated: Bool,
+                 completion: (() -> Void)?) {
+        guard self.roomContextualMenuViewController == nil else {
+            return
+        }
+        
+        roomContextualMenuViewController.view.alpha = 0
+        
+        viewController.vc_addChildViewController(viewController: roomContextualMenuViewController, onView: view)
+        
+        self.roomContextualMenuViewController = roomContextualMenuViewController
+        
+        roomContextualMenuViewController.hideMenuToolbar()
+        roomContextualMenuViewController.view.layoutIfNeeded()
+        
+        let animationInstructions: (() -> Void) = {
+            roomContextualMenuViewController.showMenuToolbar()
+            roomContextualMenuViewController.view.alpha = 1
+            roomContextualMenuViewController.view.layoutIfNeeded()
+        }
+        
+        if animated {
+            UIView.animate(withDuration: Constants.animationDuration, animations: {
+                animationInstructions()
+            }, completion: { completed in
+                completion?()
+            })
+        } else {
+            animationInstructions()
+            completion?()
+        }
+    }
+    
+    func hideContextualMenu(animated: Bool, completion: (() -> Void)?) {
+        guard let roomContextualMenuViewController = self.roomContextualMenuViewController else {
+            return
+        }
+        
+        let animationInstructions: (() -> Void) = {
+            roomContextualMenuViewController.hideMenuToolbar()
+            roomContextualMenuViewController.view.alpha = 0
+            roomContextualMenuViewController.view.layoutIfNeeded()
+        }
+        
+        let animationCompletionInstructions: (() -> Void) = {
+            roomContextualMenuViewController.vc_removeFromParent()
+            completion?()
+        }
+        
+        if animated {
+            UIView.animate(withDuration: Constants.animationDuration, animations: {
+                animationInstructions()
+            }, completion: { completed in
+                animationCompletionInstructions()
+            })
+        } else {
+            animationInstructions()
+            animationCompletionInstructions()
+        }
+    }
+}