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appleguy
465abb1ded
* [License] Simplify the Texture license to be pure Apache 2 (removing ASDK-Licenses)
With permission of the Facebook Open Source team, we are simplifying the Texture
license so that clients can rely on the Apache 2 terms that most of Texture is
already covered by. This means that code originally forked from AsyncDisplayKit
will be re-licensed from "BSD 3-clause + PATENTS v2" to Apache 2 without a
PATENTS file.
After getting confirmation that the updates to these core files look good, we'll
propagate this new license header to all files (in this same PR) and get sign-off
from all parties before landing.
* [License] Update all Texture source files to be pure Apache 2.
* Changelog entry for Apache 2 license update.
* Revert "[License] Update all Texture source files to be pure Apache 2."
This reverts commit ffa0fbbba9.
* [License] Update all Texture source files to be pure Apache 2, maintaining copyrights.
* [License] Update CONTRIBUTING, README, Podspec & Dangerfile.
122 lines
4.3 KiB
Objective-C
122 lines
4.3 KiB
Objective-C
//
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// _ASAsyncTransactionContainer.m
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// Texture
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//
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// Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
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// Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc. All rights reserved.
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// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
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//
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#import <AsyncDisplayKit/_ASAsyncTransactionContainer.h>
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#import <AsyncDisplayKit/_ASAsyncTransactionContainer+Private.h>
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#import <AsyncDisplayKit/_ASAsyncTransaction.h>
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#import <AsyncDisplayKit/_ASAsyncTransactionGroup.h>
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@implementation CALayer (ASAsyncTransactionContainerTransactions)
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@dynamic asyncdisplaykit_asyncLayerTransactions;
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// No-ops in the base class. Mostly exposed for testing.
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- (void)asyncdisplaykit_asyncTransactionContainerWillBeginTransaction:(_ASAsyncTransaction *)transaction {}
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- (void)asyncdisplaykit_asyncTransactionContainerDidCompleteTransaction:(_ASAsyncTransaction *)transaction {}
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@end
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@implementation CALayer (ASAsyncTransactionContainer)
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@dynamic asyncdisplaykit_currentAsyncTransaction;
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@dynamic asyncdisplaykit_asyncTransactionContainer;
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- (ASAsyncTransactionContainerState)asyncdisplaykit_asyncTransactionContainerState
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{
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return ([self.asyncdisplaykit_asyncLayerTransactions count] == 0) ? ASAsyncTransactionContainerStateNoTransactions : ASAsyncTransactionContainerStatePendingTransactions;
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}
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- (void)asyncdisplaykit_cancelAsyncTransactions
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{
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// If there was an open transaction, commit and clear the current transaction. Otherwise:
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// (1) The run loop observer will try to commit a canceled transaction which is not allowed
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// (2) We leave the canceled transaction attached to the layer, dooming future operations
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_ASAsyncTransaction *currentTransaction = self.asyncdisplaykit_currentAsyncTransaction;
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[currentTransaction commit];
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self.asyncdisplaykit_currentAsyncTransaction = nil;
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for (_ASAsyncTransaction *transaction in [self.asyncdisplaykit_asyncLayerTransactions copy]) {
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[transaction cancel];
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}
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}
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- (_ASAsyncTransaction *)asyncdisplaykit_asyncTransaction
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{
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_ASAsyncTransaction *transaction = self.asyncdisplaykit_currentAsyncTransaction;
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if (transaction == nil) {
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NSHashTable *transactions = self.asyncdisplaykit_asyncLayerTransactions;
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if (transactions == nil) {
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transactions = [NSHashTable hashTableWithOptions:NSHashTableObjectPointerPersonality];
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self.asyncdisplaykit_asyncLayerTransactions = transactions;
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}
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__weak CALayer *weakSelf = self;
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transaction = [[_ASAsyncTransaction alloc] initWithCompletionBlock:^(_ASAsyncTransaction *completedTransaction, BOOL cancelled) {
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__strong CALayer *self = weakSelf;
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if (self == nil) {
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return;
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}
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[transactions removeObject:completedTransaction];
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[self asyncdisplaykit_asyncTransactionContainerDidCompleteTransaction:completedTransaction];
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}];
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[transactions addObject:transaction];
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self.asyncdisplaykit_currentAsyncTransaction = transaction;
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[self asyncdisplaykit_asyncTransactionContainerWillBeginTransaction:transaction];
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}
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[_ASAsyncTransactionGroup.mainTransactionGroup addTransactionContainer:self];
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return transaction;
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}
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- (CALayer *)asyncdisplaykit_parentTransactionContainer
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{
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CALayer *containerLayer = self;
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while (containerLayer && !containerLayer.asyncdisplaykit_isAsyncTransactionContainer) {
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containerLayer = containerLayer.superlayer;
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}
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return containerLayer;
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}
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@end
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@implementation UIView (ASAsyncTransactionContainer)
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- (BOOL)asyncdisplaykit_isAsyncTransactionContainer
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{
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return self.layer.asyncdisplaykit_isAsyncTransactionContainer;
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}
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- (void)asyncdisplaykit_setAsyncTransactionContainer:(BOOL)asyncTransactionContainer
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{
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self.layer.asyncdisplaykit_asyncTransactionContainer = asyncTransactionContainer;
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}
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- (ASAsyncTransactionContainerState)asyncdisplaykit_asyncTransactionContainerState
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{
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return self.layer.asyncdisplaykit_asyncTransactionContainerState;
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}
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- (void)asyncdisplaykit_cancelAsyncTransactions
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{
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[self.layer asyncdisplaykit_cancelAsyncTransactions];
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}
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- (void)asyncdisplaykit_asyncTransactionContainerStateDidChange
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{
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// No-op in the base class.
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}
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- (void)asyncdisplaykit_setCurrentAsyncTransaction:(_ASAsyncTransaction *)transaction
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{
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self.layer.asyncdisplaykit_currentAsyncTransaction = transaction;
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}
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- (_ASAsyncTransaction *)asyncdisplaykit_currentAsyncTransaction
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{
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return self.layer.asyncdisplaykit_currentAsyncTransaction;
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}
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@end
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