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7f01b89ddc
* [ASDisplayNode] Add safeAreaInsets, layoutMargins and related properties to ASDisplayNode * Add layoutMargins bridged to the underlying view * Add safeAreaInsets bridged to the underlying view * Add fallback calculation of safeAreaInsets for old iOS versions * Add automaticallyRelayoutOnSafeAreaChanges and automaticallyRelayoutOnLayoutMarginsChanges properties * Add additionalSafeAreaInsets property to ASViewController for compatibility with old iOS versions * Provide safeAreaInsets for layer-backed nodes. This also fixes tests. * Fix crash when insetsLayoutMarginsFromSafeArea is set from a background thread * Changes requested at code review: * Update documentation for layoutMargins and safeAreaInsets properties. Suggest that users set the automaticallyRelayout* flags to ensure that their layout is synchronized to the margin's values. * Fix accessing ASDisplayNode internal structures without a lock. * Add shortcut in -[ASDisplayNode _fallbackUpdateSafeAreaOnChildren] to skip a child when possible. * Add shortcut in ASViewController to avoid fallback safe area insets recalculation in iOS 11. Fix fallback safe area insets recalculation when the additionalSafeAreaInsets are set. * Add debug check that a view controller's node is never reused without its view controller, so the viewControllerRoot flag value is always consistent. * Use getters instead of reading ivars directly in -layoutMarginsDidChange and -safeAreaInsetsDidChange. * Minor change in CHANGELOG * Minor change in ASDisplayNodeTests.mm
101 lines
4.0 KiB
Objective-C
101 lines
4.0 KiB
Objective-C
//
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// ASViewController.h
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// Texture
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the /ASDK-Licenses directory of this source tree. An additional
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// grant of patent rights can be found in the PATENTS file in the same directory.
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//
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// Modifications to this file made after 4/13/2017 are: Copyright (c) 2017-present,
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// Pinterest, Inc. Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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#import <UIKit/UIKit.h>
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#import <AsyncDisplayKit/ASDisplayNode.h>
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#import <AsyncDisplayKit/ASVisibilityProtocols.h>
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@class ASTraitCollection;
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NS_ASSUME_NONNULL_BEGIN
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typedef ASTraitCollection * _Nonnull (^ASDisplayTraitsForTraitCollectionBlock)(UITraitCollection *traitCollection);
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typedef ASTraitCollection * _Nonnull (^ASDisplayTraitsForTraitWindowSizeBlock)(CGSize windowSize);
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/**
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* ASViewController allows you to have a completely node backed hierarchy. It automatically
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* handles @c ASVisibilityDepth, automatic range mode and propogating @c ASDisplayTraits to contained nodes.
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*
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* You can opt-out of node backed hierarchy and use it like a normal UIViewController.
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* More importantly, you can use it as a base class for all of your view controllers among which some use a node hierarchy and some don't.
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* See examples/ASDKgram project for actual implementation.
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*/
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@interface ASViewController<__covariant DisplayNodeType : ASDisplayNode *> : UIViewController <ASVisibilityDepth>
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/**
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* ASViewController initializer.
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*
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* @param node An ASDisplayNode which will provide the root view (self.view)
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* @return An ASViewController instance whose root view will be backed by the provided ASDisplayNode.
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*
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* @see ASVisibilityDepth
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*/
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- (instancetype)initWithNode:(DisplayNodeType)node;
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NS_ASSUME_NONNULL_END
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/**
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* @return node Returns the ASDisplayNode which provides the backing view to the view controller.
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*/
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@property (nonatomic, strong, readonly, null_unspecified) DisplayNodeType node;
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NS_ASSUME_NONNULL_BEGIN
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/**
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* Set this block to customize the ASDisplayTraits returned when the VC transitions to the given traitCollection.
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*/
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@property (nonatomic, copy) ASDisplayTraitsForTraitCollectionBlock overrideDisplayTraitsWithTraitCollection;
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/**
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* Set this block to customize the ASDisplayTraits returned when the VC transitions to the given window size.
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*/
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@property (nonatomic, copy) ASDisplayTraitsForTraitWindowSizeBlock overrideDisplayTraitsWithWindowSize ASDISPLAYNODE_DEPRECATED_MSG("This property is actually never accessed inside the framework");
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/**
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* @abstract Passthrough property to the the .interfaceState of the node.
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* @return The current ASInterfaceState of the node, indicating whether it is visible and other situational properties.
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* @see ASInterfaceState
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*/
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@property (nonatomic, readonly) ASInterfaceState interfaceState;
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// AsyncDisplayKit 2.0 BETA: This property is still being tested, but it allows
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// blocking as a view controller becomes visible to ensure no placeholders flash onscreen.
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// Refer to examples/SynchronousConcurrency, AsyncViewController.m
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@property (nonatomic, assign) BOOL neverShowPlaceholders;
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/* Custom container UIViewController subclasses can use this property to add to the overlay
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that UIViewController calculates for the safeAreaInsets for contained view controllers.
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*/
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@property(nonatomic) UIEdgeInsets additionalSafeAreaInsets;
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@end
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@interface ASViewController (ASRangeControllerUpdateRangeProtocol)
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/**
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* Automatically adjust range mode based on view events. If you set this to YES, the view controller or its node
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* must conform to the ASRangeControllerUpdateRangeProtocol.
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*
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* Default value is YES *if* node or view controller conform to ASRangeControllerUpdateRangeProtocol otherwise it is NO.
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*/
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@property (nonatomic, assign) BOOL automaticallyAdjustRangeModeBasedOnViewEvents;
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@end
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NS_ASSUME_NONNULL_END
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