Index: ios/web_view/internal/cwv_scroll_view.mm |
diff --git a/ios/web_view/internal/cwv_scroll_view.mm b/ios/web_view/internal/cwv_scroll_view.mm |
new file mode 100644 |
index 0000000000000000000000000000000000000000..ceec039a0322fbd92eb14e51b3afb10ae983aeaa |
--- /dev/null |
+++ b/ios/web_view/internal/cwv_scroll_view.mm |
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+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#import "ios/web_view/public/cwv_scroll_view.h" |
+ |
+#import "ios/web/public/web_state/ui/crw_web_view_scroll_view_proxy.h" |
+#import "ios/web_view/internal/cwv_scroll_view_internal.h" |
+#import "ios/web_view/public/cwv_scroll_view_delegate.h" |
+ |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
+@interface CWVScrollView ()<CRWWebViewScrollViewProxyObserver> |
+ |
+// For KVO compliance, redefines the property as readwrite and calls its setter |
+// when the value changes, instead of defining a getter which directly calls |
+// _proxy.contentSize. |
+@property(nonatomic, readwrite) CGSize contentSize; |
+ |
+@end |
+ |
+@implementation CWVScrollView |
+ |
+@synthesize contentSize = _contentSize; |
+@synthesize delegate = _delegate; |
+@synthesize proxy = _proxy; |
+ |
+- (void)setProxy:(nullable CRWWebViewScrollViewProxy*)proxy { |
+ [_proxy removeObserver:self]; |
+ _proxy = proxy; |
+ self.contentSize = _proxy.contentSize; |
+ [_proxy addObserver:self]; |
+} |
+ |
+- (CGPoint)contentOffset { |
+ return _proxy.contentOffset; |
+} |
+ |
+- (void)setContentOffset:(CGPoint)contentOffset { |
+ _proxy.contentOffset = contentOffset; |
+} |
+ |
+- (CGRect)bounds { |
+ return {_proxy.contentOffset, _proxy.frame.size}; |
+} |
+ |
+- (BOOL)isDragging { |
+ return _proxy.dragging; |
+} |
+ |
+- (UIEdgeInsets)contentInset { |
+ return _proxy.contentInset; |
+} |
+ |
+- (void)setContentInset:(UIEdgeInsets)contentInset { |
+ _proxy.contentInset = contentInset; |
+} |
+ |
+- (void)addGestureRecognizer:(UIGestureRecognizer*)gestureRecognizer { |
+ [_proxy addGestureRecognizer:gestureRecognizer]; |
+} |
+ |
+#pragma mark - CRWWebViewScrollViewObserver |
+ |
+- (void)webViewScrollViewWillBeginDragging: |
+ (CRWWebViewScrollViewProxy*)webViewScrollViewProxy { |
+ SEL selector = @selector(webViewScrollViewWillBeginDragging:); |
+ if ([_delegate respondsToSelector:selector]) { |
+ [_delegate scrollViewWillBeginDragging:self]; |
+ } |
+} |
+- (void)webViewScrollViewWillEndDragging: |
+ (CRWWebViewScrollViewProxy*)webViewScrollViewProxy |
+ withVelocity:(CGPoint)velocity |
+ targetContentOffset:(inout CGPoint*)targetContentOffset { |
+ SEL selector = @selector |
+ (webViewScrollViewWillEndDragging:withVelocity:targetContentOffset:); |
+ if ([_delegate respondsToSelector:selector]) { |
+ [_delegate scrollViewWillEndDragging:self |
+ withVelocity:velocity |
+ targetContentOffset:targetContentOffset]; |
+ } |
+} |
+ |
+- (void)webViewScrollViewDidScroll: |
+ (CRWWebViewScrollViewProxy*)webViewScrollViewProxy { |
+ SEL selector = @selector(scrollViewDidScroll:); |
+ if ([_delegate respondsToSelector:selector]) { |
+ [_delegate scrollViewDidScroll:self]; |
+ } |
+} |
+ |
+- (void)webViewScrollViewDidEndDecelerating: |
+ (CRWWebViewScrollViewProxy*)webViewScrollViewProxy { |
+ SEL selector = @selector(webViewScrollViewDidEndDecelerating:); |
+ if ([_delegate respondsToSelector:selector]) { |
+ [_delegate scrollViewDidEndDecelerating:self]; |
+ } |
+} |
+ |
+- (void)webViewScrollViewDidResetContentSize: |
+ (CRWWebViewScrollViewProxy*)webViewScrollViewProxy { |
+ self.contentSize = _proxy.contentSize; |
+} |
+ |
+@end |