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// Copyright (c) 2012 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_UI_COCOA_TABS_TAB_STRIP_MODEL_OBSERVER_BRIDGE_H_
#define CHROME_BROWSER_UI_COCOA_TABS_TAB_STRIP_MODEL_OBSERVER_BRIDGE_H_
#import <Foundation/Foundation.h>
#include "base/compiler_specific.h"
#include "chrome/browser/ui/tabs/tab_strip_model_observer.h"
class TabStripModel;
namespace content {
class WebContents;
}
// 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);
~TabStripModelObserverBridge() override;
// Overridden from TabStripModelObserver
void TabInsertedAt(content::WebContents* contents,
int index,
bool foreground) override;
void TabClosingAt(TabStripModel* tab_strip_model,
content::WebContents* contents,
int index) override;
void TabDetachedAt(content::WebContents* contents, int index) override;
void TabDeactivated(content::WebContents* contents) override;
void ActiveTabChanged(content::WebContents* old_contents,
content::WebContents* new_contents,
int index,
int reason) override;
void TabSelectionChanged(TabStripModel* tab_strip_model,
const ui::ListSelectionModel& old_model) override;
void TabMoved(content::WebContents* contents,
int from_index,
int to_index) override;
void TabChangedAt(content::WebContents* contents,
int index,
TabChangeType change_type) override;
void TabReplacedAt(TabStripModel* tab_strip_model,
content::WebContents* old_contents,
content::WebContents* new_contents,
int index) override;
void TabMiniStateChanged(content::WebContents* contents, int index) override;
void TabStripEmpty() override;
void TabStripModelDeleted() override;
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:(content::WebContents*)contents
atIndex:(NSInteger)index
inForeground:(bool)inForeground;
- (void)tabClosingWithContents:(content::WebContents*)contents
atIndex:(NSInteger)index;
- (void)tabDetachedWithContents:(content::WebContents*)contents
atIndex:(NSInteger)index;
- (void)tabDeactivatedWithContents:(content::WebContents*)contents;
- (void)activateTabWithContents:(content::WebContents*)newContents
previousContents:(content::WebContents*)oldContents
atIndex:(NSInteger)index
reason:(int)reason;
- (void)tabMovedWithContents:(content::WebContents*)contents
fromIndex:(NSInteger)from
toIndex:(NSInteger)to;
- (void)tabChangedWithContents:(content::WebContents*)contents
atIndex:(NSInteger)index
changeType:(TabStripModelObserver::TabChangeType)change;
- (void)tabReplacedWithContents:(content::WebContents*)newContents
previousContents:(content::WebContents*)oldContents
atIndex:(NSInteger)index;
- (void)tabMiniStateChangedWithContents:(content::WebContents*)contents
atIndex:(NSInteger)index;
- (void)tabStripEmpty;
- (void)tabStripModelDeleted;
- (void)tabSelectionChanged;
@end
#endif // CHROME_BROWSER_UI_COCOA_TABS_TAB_STRIP_MODEL_OBSERVER_BRIDGE_H_
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