mirror of
https://github.com/vector-im/element-ios.git
synced 2024-09-30 16:22:39 +00:00
42 lines
1.8 KiB
Swift
42 lines
1.8 KiB
Swift
//
|
|
// Copyright 2022 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
|
|
import UIKit
|
|
|
|
/// The presentation context is used by `UserIndicatorViewPresentable`s to display content
|
|
/// on the screen and it serves two primary purposes:
|
|
///
|
|
/// - abstraction on top of UIKit (passing context instead of view controllers)
|
|
/// - immutable context passed at init with variable presenting view controller
|
|
/// (e.g. depending on collapsed / uncollapsed iPad presentation that changes
|
|
/// at runtime)
|
|
public protocol UserIndicatorPresentationContext {
|
|
var indicatorPresentingViewController: UIViewController? { get }
|
|
}
|
|
|
|
/// A simple implementation of `UserIndicatorPresentationContext` that uses a weak reference
|
|
/// to the passed-in view controller as the presentation context.
|
|
public class StaticUserIndicatorPresentationContext: UserIndicatorPresentationContext {
|
|
// The presenting view controller will be the parent of the user indicator,
|
|
// and the indicator holds a strong reference to the context, so the view controller
|
|
// must be decleared `weak` to avoid a retain cycle
|
|
public private(set) weak var indicatorPresentingViewController: UIViewController?
|
|
|
|
public init(viewController: UIViewController) {
|
|
self.indicatorPresentingViewController = viewController
|
|
}
|
|
}
|