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91 lines
3.1 KiB
91 lines
3.1 KiB
// The MIT License (MIT)
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//
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// Copyright (c) 2016 Luke Zhao <me@lkzhao.com>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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import UIKit
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public struct HeroConditionalContext {
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internal weak var hero: HeroTransition!
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public weak var view: UIView!
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public private(set) var isAppearing: Bool
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public var isPresenting: Bool {
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return hero.isPresenting
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}
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public var isInTabbarController: Bool {
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return hero.inTabBarController
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}
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public var isInNavbarController: Bool {
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return hero.inNavigationController
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}
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public var isMatched: Bool {
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return matchedView != nil
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}
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public var isAncestorViewMatched: Bool {
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return matchedAncestorView != nil
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}
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public var matchedView: UIView? {
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return hero.context.pairedView(for: view)
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}
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public var matchedAncestorView: (UIView, UIView)? {
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var current = view.superview
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while let ancestor = current, ancestor != hero.context.container {
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if let pairedView = hero.context.pairedView(for: ancestor) {
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return (ancestor, pairedView)
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}
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current = ancestor.superview
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}
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return nil
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}
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public var fromViewController: UIViewController {
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return hero.fromViewController!
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}
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public var toViewController: UIViewController {
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return hero.toViewController!
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}
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public var currentViewController: UIViewController {
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return isAppearing ? toViewController : fromViewController
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}
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public var otherViewController: UIViewController {
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return isAppearing ? fromViewController : toViewController
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}
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}
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class ConditionalPreprocessor: BasePreprocessor {
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override func process(fromViews: [UIView], toViews: [UIView]) {
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process(views: fromViews, appearing: false)
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process(views: toViews, appearing: true)
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}
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func process(views: [UIView], appearing: Bool) {
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for view in views {
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guard let conditionalModifiers = context[view]?.conditionalModifiers else { continue }
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for (condition, modifiers) in conditionalModifiers {
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if condition(HeroConditionalContext(hero: hero, view: view, isAppearing: appearing)) {
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context[view]!.append(contentsOf: modifiers)
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}
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}
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}
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}
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}
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