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1 // Copyright 2017 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #import "ios/web_view/public/cwv_scroll_view.h" | |
6 | |
7 #import "ios/web/public/web_state/ui/crw_web_view_scroll_view_proxy.h" | |
8 #import "ios/web_view/internal/cwv_scroll_view_internal.h" | |
9 #import "ios/web_view/public/cwv_scroll_view_delegate.h" | |
10 | |
11 #if !defined(__has_feature) || !__has_feature(objc_arc) | |
12 #error "This file requires ARC support." | |
13 #endif | |
14 | |
15 @interface CWVScrollView ()<CRWWebViewScrollViewProxyObserver> | |
16 | |
17 // For KVO compliance, redefines the property as readwrite and calls its setter | |
18 // when the value changes, instead of defining a getter which directly calls | |
19 // _proxy.contentSize. | |
20 @property(nonatomic, readwrite) CGSize contentSize; | |
21 | |
22 @end | |
23 | |
24 @implementation CWVScrollView | |
25 | |
26 @synthesize delegate = _delegate; | |
27 @synthesize proxy = _proxy; | |
28 @synthesize contentSize = _contentSize; | |
michaeldo
2017/05/01 18:49:53
nit: Please sort alphabetically.
Hiroshi Ichikawa
2017/05/08 06:52:41
Done.
| |
29 | |
30 - (void)setProxy:(nullable CRWWebViewScrollViewProxy*)proxy { | |
31 [_proxy removeObserver:self]; | |
32 _proxy = proxy; | |
33 self.contentSize = _proxy.contentSize; | |
34 [_proxy addObserver:self]; | |
35 } | |
36 | |
37 - (CGPoint)contentOffset { | |
38 return _proxy.contentOffset; | |
39 } | |
40 | |
41 - (void)setContentOffset:(CGPoint)contentOffset { | |
42 _proxy.contentOffset = contentOffset; | |
43 } | |
44 | |
45 - (CGRect)frame { | |
46 return _proxy.frame; | |
47 } | |
48 | |
49 - (CGRect)bounds { | |
50 return {_proxy.contentOffset, _proxy.frame.size}; | |
51 } | |
52 | |
53 - (BOOL)isDragging { | |
54 return _proxy.dragging; | |
55 } | |
56 | |
57 - (void)addGestureRecognizer:(UIGestureRecognizer*)gestureRecognizer { | |
58 [_proxy addGestureRecognizer:gestureRecognizer]; | |
59 } | |
60 | |
61 - (UIEdgeInsets)contentInset { | |
62 return _proxy.contentInset; | |
63 } | |
64 | |
65 - (void)setContentInset:(UIEdgeInsets)contentInset { | |
66 _proxy.contentInset = contentInset; | |
67 } | |
68 | |
69 #pragma mark - CRWWebViewScrollViewObserver | |
70 | |
71 - (void)webViewScrollViewWillBeginDragging: | |
72 (CRWWebViewScrollViewProxy*)webViewScrollViewProxy { | |
73 SEL selector = @selector(webViewScrollViewWillBeginDragging:); | |
74 if ([_delegate respondsToSelector:selector]) { | |
75 [_delegate scrollViewWillBeginDragging:self]; | |
76 } | |
77 } | |
78 - (void)webViewScrollViewWillEndDragging: | |
79 (CRWWebViewScrollViewProxy*)webViewScrollViewProxy | |
80 withVelocity:(CGPoint)velocity | |
81 targetContentOffset:(inout CGPoint*)targetContentOffset { | |
82 SEL selector = @selector | |
83 (webViewScrollViewWillEndDragging:withVelocity:targetContentOffset:); | |
84 if ([_delegate respondsToSelector:selector]) { | |
85 [_delegate scrollViewWillEndDragging:self | |
86 withVelocity:velocity | |
87 targetContentOffset:targetContentOffset]; | |
88 } | |
89 } | |
90 | |
91 - (void)webViewScrollViewDidScroll: | |
92 (CRWWebViewScrollViewProxy*)webViewScrollViewProxy { | |
93 SEL selector = @selector(scrollViewDidScroll:); | |
94 if ([_delegate respondsToSelector:selector]) { | |
95 [_delegate scrollViewDidScroll:self]; | |
96 } | |
97 } | |
98 | |
99 - (void)webViewScrollViewDidEndDecelerating: | |
100 (CRWWebViewScrollViewProxy*)webViewScrollViewProxy { | |
101 SEL selector = @selector(webViewScrollViewDidEndDecelerating:); | |
102 if ([_delegate respondsToSelector:selector]) { | |
103 [_delegate scrollViewDidEndDecelerating:self]; | |
104 } | |
105 } | |
106 | |
107 - (void)webViewScrollViewDidResetContentSize: | |
108 (CRWWebViewScrollViewProxy*)webViewScrollViewProxy { | |
109 self.contentSize = _proxy.contentSize; | |
110 } | |
111 | |
112 @end | |
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