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1 // Copyright (c) 2010 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 #ifndef CHROME_BROWSER_UI_COCOA_TAB_STRIP_MODEL_OBSERVER_BRIDGE_H_ | |
6 #define CHROME_BROWSER_UI_COCOA_TAB_STRIP_MODEL_OBSERVER_BRIDGE_H_ | |
7 #pragma once | |
8 | |
9 #import <Foundation/Foundation.h> | |
10 | |
11 #include "chrome/browser/tabs/tab_strip_model_observer.h" | |
12 | |
13 class TabContentsWrapper; | |
14 class TabStripModel; | |
15 | |
16 // A C++ bridge class to handle receiving notifications from the C++ tab strip | |
17 // model. When the caller allocates a bridge, it automatically registers for | |
18 // notifications from |model| and passes messages to |controller| via the | |
19 // informal protocol below. The owner of this object is responsible for deleting | |
20 // it (and thus unhooking notifications) before |controller| is destroyed. | |
21 class TabStripModelObserverBridge : public TabStripModelObserver { | |
22 public: | |
23 TabStripModelObserverBridge(TabStripModel* model, id controller); | |
24 virtual ~TabStripModelObserverBridge(); | |
25 | |
26 // Overridden from TabStripModelObserver | |
27 virtual void TabInsertedAt(TabContentsWrapper* contents, | |
28 int index, | |
29 bool foreground); | |
30 virtual void TabClosingAt(TabStripModel* tab_strip_model, | |
31 TabContentsWrapper* contents, | |
32 int index); | |
33 virtual void TabDetachedAt(TabContentsWrapper* contents, int index); | |
34 virtual void TabSelectedAt(TabContentsWrapper* old_contents, | |
35 TabContentsWrapper* new_contents, | |
36 int index, | |
37 bool user_gesture); | |
38 virtual void TabMoved(TabContentsWrapper* contents, | |
39 int from_index, | |
40 int to_index); | |
41 virtual void TabChangedAt(TabContentsWrapper* contents, int index, | |
42 TabChangeType change_type); | |
43 virtual void TabReplacedAt(TabStripModel* tab_strip_model, | |
44 TabContentsWrapper* old_contents, | |
45 TabContentsWrapper* new_contents, | |
46 int index); | |
47 virtual void TabMiniStateChanged(TabContentsWrapper* contents, int index); | |
48 virtual void TabStripEmpty(); | |
49 virtual void TabStripModelDeleted(); | |
50 | |
51 private: | |
52 id controller_; // weak, owns me | |
53 TabStripModel* model_; // weak, owned by Browser | |
54 }; | |
55 | |
56 // A collection of methods which can be selectively implemented by any | |
57 // Cocoa object to receive updates about changes to a tab strip model. It is | |
58 // ok to not implement them, the calling code checks before calling. | |
59 @interface NSObject(TabStripModelBridge) | |
60 - (void)insertTabWithContents:(TabContentsWrapper*)contents | |
61 atIndex:(NSInteger)index | |
62 inForeground:(bool)inForeground; | |
63 - (void)tabClosingWithContents:(TabContentsWrapper*)contents | |
64 atIndex:(NSInteger)index; | |
65 - (void)tabDetachedWithContents:(TabContentsWrapper*)contents | |
66 atIndex:(NSInteger)index; | |
67 - (void)selectTabWithContents:(TabContentsWrapper*)newContents | |
68 previousContents:(TabContentsWrapper*)oldContents | |
69 atIndex:(NSInteger)index | |
70 userGesture:(bool)wasUserGesture; | |
71 - (void)tabMovedWithContents:(TabContentsWrapper*)contents | |
72 fromIndex:(NSInteger)from | |
73 toIndex:(NSInteger)to; | |
74 - (void)tabChangedWithContents:(TabContentsWrapper*)contents | |
75 atIndex:(NSInteger)index | |
76 changeType:(TabStripModelObserver::TabChangeType)change; | |
77 - (void)tabReplacedWithContents:(TabContentsWrapper*)newContents | |
78 previousContents:(TabContentsWrapper*)oldContents | |
79 atIndex:(NSInteger)index; | |
80 - (void)tabMiniStateChangedWithContents:(TabContentsWrapper*)contents | |
81 atIndex:(NSInteger)index; | |
82 - (void)tabStripEmpty; | |
83 - (void)tabStripModelDeleted; | |
84 @end | |
85 | |
86 #endif // CHROME_BROWSER_UI_COCOA_TAB_STRIP_MODEL_OBSERVER_BRIDGE_H_ | |
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