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 13class TabContentsWrapper; 14class 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. 21class 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