104 lines
3.7 KiB
Swift
104 lines
3.7 KiB
Swift
//
|
|
// Copyright 2021-2024 New Vector Ltd.
|
|
//
|
|
// SPDX-License-Identifier: AGPL-3.0-only
|
|
// Please see LICENSE in the repository root for full details.
|
|
//
|
|
|
|
import UIKit
|
|
|
|
/// `WindowOverlayPresenter` allows to add a given view to the presenting view or window.
|
|
/// The presenter also manages taps over the presenting view and the duration to dismiss the view.
|
|
class WindowOverlayPresenter: NSObject {
|
|
|
|
// MARK: Private
|
|
|
|
private weak var presentingView: UIView?
|
|
private weak var presentedView: UIView?
|
|
private weak var gestureRecognizer: UIGestureRecognizer?
|
|
private var timer: Timer?
|
|
|
|
// MARK: Public
|
|
|
|
/// Add a given view to the presenting view or window.
|
|
/// The presenter also manages taps over the presenting view and the duration to dismiss the view.
|
|
///
|
|
/// - parameters:
|
|
/// - view: instance of the view that will be displayed
|
|
/// - presentingView: instance of the presenting view. `nil` will display the view over the key window
|
|
/// - duration:if duration is not `nil`, the view will be dismissed after the given duration. The view is never dismissed otherwise
|
|
func show(_ view: UIView, over presentingView: UIView? = nil, duration: TimeInterval? = nil) {
|
|
guard presentedView == nil else {
|
|
return
|
|
}
|
|
|
|
let keyWindow: UIWindow? = UIApplication.shared.windows.filter {$0.isKeyWindow}.first
|
|
|
|
guard let backView = presentingView ?? keyWindow else {
|
|
MXLog.error("[WindowOverlay] show: no eligible presenting view found")
|
|
return
|
|
}
|
|
|
|
view.alpha = 0
|
|
|
|
backView.addSubview(view)
|
|
|
|
let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(self.didTapOnBackView(sender:)))
|
|
tapGestureRecognizer.cancelsTouchesInView = false
|
|
backView.addGestureRecognizer(tapGestureRecognizer)
|
|
self.gestureRecognizer = tapGestureRecognizer
|
|
|
|
self.presentingView = backView
|
|
self.presentedView = view
|
|
|
|
UIView.animate(withDuration: 0.3) {
|
|
view.alpha = 1
|
|
}
|
|
|
|
if let timeout = duration {
|
|
timer = Timer.scheduledTimer(withTimeInterval: timeout, repeats: false, block: { [weak self] timer in
|
|
self?.dismiss()
|
|
})
|
|
}
|
|
}
|
|
|
|
/// Dismisses the currently presented view.
|
|
func dismiss() {
|
|
if let gestureRecognizer = self.gestureRecognizer {
|
|
self.presentingView?.removeGestureRecognizer(gestureRecognizer)
|
|
}
|
|
self.timer?.invalidate()
|
|
self.timer = nil
|
|
|
|
UIView.animate(withDuration: 0.3) {
|
|
self.presentedView?.alpha = 0
|
|
} completion: { isFinished in
|
|
if isFinished {
|
|
self.presentedView?.removeFromSuperview()
|
|
self.presentingView = nil
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
// MARK: Private
|
|
|
|
@objc private func didTapOnBackView(sender: UIGestureRecognizer) {
|
|
dismiss()
|
|
}
|
|
}
|
|
|
|
// MARK: Objective-C
|
|
extension WindowOverlayPresenter {
|
|
/// Add a given view to the presenting view or window.
|
|
/// The presenter also manages taps over the presenting view and the duration to dismiss the view.
|
|
///
|
|
/// - parameters:
|
|
/// - view: instance of the view that will be displayed
|
|
/// - presentingView: instance of the presenting view. `nil` will display the view over the key window
|
|
/// - duration:if duration > 0, the view will be dismissed after the given duration. The view is never dismissed otherwise
|
|
@objc func show(_ view: UIView, over presentingView: UIView?, duration: TimeInterval) {
|
|
self.show(view, over: presentingView, duration: duration > 0 ? duration : nil)
|
|
}
|
|
}
|