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ASViewController.m
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70 lines (57 loc) · 1.37 KB
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//
// ASViewController.m
// AsyncDisplayKit
//
// Created by Huy Nguyen on 16/09/15.
// Copyright (c) 2015 Facebook. All rights reserved.
//
#import "ASViewController.h"
#import "ASAssert.h"
#import "ASDimension.h"
// FIXME: Temporary nonsense import until method names are finalized and exposed
#import "ASDisplayNode+Subclasses.h"
@implementation ASViewController
{
BOOL _ensureDisplayed;
}
- (instancetype)initWithNode:(ASDisplayNode *)node
{
if (!(self = [super initWithNibName:nil bundle:nil])) {
return nil;
}
ASDisplayNodeAssertNotNil(node, @"Node must not be nil");
ASDisplayNodeAssertTrue(!node.layerBacked);
_node = node;
return self;
}
- (void)loadView
{
ASDisplayNodeAssertTrue(!_node.layerBacked);
self.view = _node.view;
}
- (void)viewWillLayoutSubviews
{
[super viewWillLayoutSubviews];
[_node measureWithSizeRange:[self nodeConstrainedSize]];
}
- (void)viewDidLayoutSubviews
{
if (_ensureDisplayed && self.neverShowPlaceholders) {
_ensureDisplayed = NO;
[self.node recursivelyEnsureDisplay];
}
[super viewDidLayoutSubviews];
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
_ensureDisplayed = YES;
[_node recursivelyFetchData];
}
// MARK: - Layout Helpers
- (ASSizeRange)nodeConstrainedSize
{
CGSize viewSize = self.view.bounds.size;
return ASSizeRangeMake(viewSize, viewSize);
}
@end