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_TABS_TAB_STRIP_MODEL_OBSERVER_BRIDGE_H_ 6 #define CHROME_BROWSER_UI_COCOA_TABS_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_TABS_TAB_STRIP_MODEL_OBSERVER_BRIDGE_H_ 87