Add activity indicator

Riot/Modules/Common/ActivityIndicator/UIKit/ActivityIndicatorView.swift

@@ -0,0 +1,91 @@
+/*
+ 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
+import Reusable
+
+final class ActivityIndicatorView: UIView, NibOwnerLoadable {
+    
+    // MARK: - Constants
+    
+    private enum Constants {
+        static let cornerRadius: CGFloat = 5.0
+        static let activityIndicatorMargin = CGSize(width: 30.0, height: 30.0)
+    }
+    
+    // MARK: - Properties
+    
+    // MARK: Outlets
+    
+    @IBOutlet private weak var activityIndicatorView: UIActivityIndicatorView!
+    @IBOutlet private weak var activityIndicatorBackgroundView: UIView!
+    
+    // MARK: Public
+    
+    var color: UIColor? {
+        get {
+            return activityIndicatorView.color
+        }
+        set {            
+            activityIndicatorView.color = newValue
+        }
+    }
+    
+    // MARK: - Setup
+    
+    private func commonInit() {        
+        self.activityIndicatorBackgroundView.layer.masksToBounds = true
+    }
+    
+    convenience init() {
+        self.init(frame: CGRect.zero)
+    }
+    
+    required init?(coder aDecoder: NSCoder) {
+        super.init(coder: aDecoder)
+        self.loadNibContent()
+        self.commonInit()
+    }
+    
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        self.loadNibContent()
+        self.commonInit()
+    }
+    
+    // MARK: - Overrides
+    
+    override var intrinsicContentSize: CGSize {
+        return CGSize(width: self.activityIndicatorView.intrinsicContentSize.width + Constants.activityIndicatorMargin.width,
+                      height: self.activityIndicatorView.intrinsicContentSize.height + Constants.activityIndicatorMargin.height)
+    }
+    
+    override func layoutSubviews() {
+        super.layoutSubviews()
+        
+        self.activityIndicatorBackgroundView.layer.cornerRadius = Constants.cornerRadius
+    }
+    
+    // MARK: - Public
+    
+    func startAnimating() {
+        self.activityIndicatorView.startAnimating()
+    }
+    
+    func stopAnimating() {
+        self.activityIndicatorView.stopAnimating()
+    }
+}