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// Copyright (c) 2009 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.
#ifndef CHROME_BROWSER_COCOA_TAB_STRIP_MODEL_OBSERVER_BRIDGE_H_
#define CHROME_BROWSER_COCOA_TAB_STRIP_MODEL_OBSERVER_BRIDGE_H_
#import <Foundation/Foundation.h>
#include "chrome/browser/tabs/tab_strip_model.h"
class TabContents;
// A C++ bridge class to handle receiving notifications from the C++ tab strip
// model. When the caller allocates a bridge, it automatically registers for
// notifications from |model| and passes messages to |controller| via the
// informal protocol below. The owner of this object is responsible for deleting
// it (and thus unhooking notifications) before |controller| is destroyed.
class TabStripModelObserverBridge : public TabStripModelObserver {
public:
TabStripModelObserverBridge(TabStripModel* model, id controller);
virtual ~TabStripModelObserverBridge();
// Overridden from TabStripModelObserver
virtual void TabInsertedAt(TabContents* contents,
int index,
bool foreground);
virtual void TabClosingAt(TabContents* contents, int index);
virtual void TabDetachedAt(TabContents* contents, int index);
virtual void TabSelectedAt(TabContents* old_contents,
TabContents* new_contents,
int index,
bool user_gesture);
virtual void TabMoved(TabContents* contents,
int from_index,
int to_index);
virtual void TabChangedAt(TabContents* contents, int index,
bool loading_only);
virtual void TabStripEmpty();
private:
id controller_; // weak, owns me
TabStripModel* model_; // weak, owned by Browser
};
// A collection of methods which can be selectively implemented by any
// Cocoa object to receive updates about changes to a tab strip model. It is
// ok to not implement them, the calling code checks before calling.
@interface NSObject(TabStripModelBridge)
- (void)insertTabWithContents:(TabContents*)contents
atIndex:(NSInteger)index
inForeground:(bool)inForeground;
- (void)tabClosingWithContents:(TabContents*)contents
atIndex:(NSInteger)index;
- (void)tabDetachedWithContents:(TabContents*)contents
atIndex:(NSInteger)index;
- (void)selectTabWithContents:(TabContents*)newContents
previousContents:(TabContents*)oldContents
atIndex:(NSInteger)index
userGesture:(bool)wasUserGesture;
- (void)tabMovedWithContents:(TabContents*)contents
fromIndex:(NSInteger)from
toIndex:(NSInteger)to;
- (void)tabChangedWithContents:(TabContents*)contents
atIndex:(NSInteger)index
loadingOnly:(BOOL)loading;
- (void)tabStripEmpty;
@end
#endif // CHROME_BROWSER_COCOA_TAB_STRIP_MODEL_OBSERVER_BRIDGE_H_
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