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Enable ASRangeControllerUpdateRangeProtocol by default if view controller or node support it. (#2133)

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This commit is contained in:
Garrett Moon
2016-08-25 21:18:04 -07:00
committed by Adlai Holler
parent 04ecd4180e
commit e3091737ca
2 changed files with 10 additions and 13 deletions
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21
AsyncDisplayKit/ASViewController.mm
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@@ -29,7 +29,6 @@
NSInteger _visibilityDepth;
BOOL _selfConformsToRangeModeProtocol;
BOOL _nodeConformsToRangeModeProtocol;
BOOL _didCheckRangeModeProtocolConformance;
}
- (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
@@ -54,7 +53,9 @@
ASDisplayNodeAssertTrue(!node.layerBacked);
_node = node;
_automaticallyAdjustRangeModeBasedOnViewEvents = NO;
_selfConformsToRangeModeProtocol = [self conformsToProtocol:@protocol(ASRangeControllerUpdateRangeProtocol)];
_nodeConformsToRangeModeProtocol = [_node conformsToProtocol:@protocol(ASRangeControllerUpdateRangeProtocol)];
_automaticallyAdjustRangeModeBasedOnViewEvents = _selfConformsToRangeModeProtocol || _nodeConformsToRangeModeProtocol;
return self;
}
@@ -168,22 +169,18 @@ ASVisibilityDepthImplementation;
- (void)setAutomaticallyAdjustRangeModeBasedOnViewEvents:(BOOL)automaticallyAdjustRangeModeBasedOnViewEvents
{
_automaticallyAdjustRangeModeBasedOnViewEvents = automaticallyAdjustRangeModeBasedOnViewEvents;
if (automaticallyAdjustRangeModeBasedOnViewEvents != _automaticallyAdjustRangeModeBasedOnViewEvents) {
if (automaticallyAdjustRangeModeBasedOnViewEvents && _selfConformsToRangeModeProtocol == NO && _nodeConformsToRangeModeProtocol == NO) {
NSLog(@"Warning: automaticallyAdjustRangeModeBasedOnViewEvents set to YES in %@, but range mode updating is not possible because neither view controller nor node %@ conform to ASRangeControllerUpdateRangeProtocol.", self, _node);
}
_automaticallyAdjustRangeModeBasedOnViewEvents = automaticallyAdjustRangeModeBasedOnViewEvents;
}
}
- (void)updateCurrentRangeModeWithModeIfPossible:(ASLayoutRangeMode)rangeMode
{
if (!_automaticallyAdjustRangeModeBasedOnViewEvents) { return; }
if (!_didCheckRangeModeProtocolConformance) {
_selfConformsToRangeModeProtocol = [self conformsToProtocol:@protocol(ASRangeControllerUpdateRangeProtocol)];
_nodeConformsToRangeModeProtocol = [_node conformsToProtocol:@protocol(ASRangeControllerUpdateRangeProtocol)];
_didCheckRangeModeProtocolConformance = YES;
if (!_selfConformsToRangeModeProtocol && !_nodeConformsToRangeModeProtocol) {
NSLog(@"Warning: automaticallyAdjustRangeModeBasedOnViewEvents set to YES in %@, but range mode updating is not possible because neither view controller nor node %@ conform to ASRangeControllerUpdateRangeProtocol.", self, _node);
}
}
if (_selfConformsToRangeModeProtocol) {
id<ASRangeControllerUpdateRangeProtocol> rangeUpdater = (id<ASRangeControllerUpdateRangeProtocol>)self;
[rangeUpdater updateCurrentRangeWithMode:rangeMode];