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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_BROWSER_LIST_H_
#define CHROME_BROWSER_UI_BROWSER_LIST_H_
#include <vector>
#include "base/gtest_prod_util.h"
#include "ui/gfx/native_widget_types.h"
class Browser;
class Profile;
namespace chrome {
class BrowserListObserver;
#if defined(OS_MACOSX)
Browser* GetLastActiveBrowser();
#endif
#if defined(TOOLKIT_GTK)
class ExtensionInstallDialog;
#endif
}
#if defined(OS_CHROMEOS)
namespace chromeos {
class ScreenLocker;
}
#endif
namespace content {
class WebContents;
}
namespace web_intents {
Browser* GetBrowserForBackgroundWebIntentDelivery(Profile*);
}
#if defined(USE_ASH)
content::WebContents* GetActiveWebContents();
#endif
// Stores a list of all Browser objects.
class BrowserList {
public:
typedef std::vector<Browser*> BrowserVector;
typedef BrowserVector::iterator iterator;
typedef BrowserVector::const_iterator const_iterator;
typedef BrowserVector::const_reverse_iterator const_reverse_iterator;
// Adds and removes browsers from the global list. The browser object should
// be valid BEFORE these calls (for the benefit of observers), so notify and
// THEN delete the object.
static void AddBrowser(Browser* browser);
static void RemoveBrowser(Browser* browser);
static void AddObserver(chrome::BrowserListObserver* observer);
static void RemoveObserver(chrome::BrowserListObserver* observer);
// Called by Browser objects when their window is activated (focused). This
// allows us to determine what the last active Browser was.
static void SetLastActive(Browser* browser);
// Closes all browsers for |profile|.
static void CloseAllBrowsersWithProfile(Profile* profile);
// Browsers are added to the list before they have constructed windows,
// so the |window()| member function may return NULL.
static const_iterator begin();
static const_iterator end();
static bool empty();
static size_t size();
// Returns iterated access to list of open browsers ordered by when
// they were last active. The underlying data structure is a vector
// and we push_back on recent access so a reverse iterator gives the
// latest accessed browser first.
static const_reverse_iterator begin_last_active();
static const_reverse_iterator end_last_active();
// Returns true if at least one incognito session is active.
static bool IsOffTheRecordSessionActive();
// Returns true if at least one incognito session is active for |profile|.
static bool IsOffTheRecordSessionActiveForProfile(Profile* profile);
private:
// DO NOT ADD MORE FRIENDS TO THIS LIST. This list should be reduced over
// time by wiring context through to the relevant code rather than using
// GetLastActive().
friend class SelectFileDialogExtension;
friend Browser* web_intents::GetBrowserForBackgroundWebIntentDelivery(
Profile*);
#if defined(OS_CHROMEOS)
friend class chromeos::ScreenLocker;
#endif
#if defined(OS_MACOSX)
friend Browser* chrome::GetLastActiveBrowser();
#endif
#if defined(USE_ASH)
friend content::WebContents* GetActiveWebContents();
#endif
// DO NOT ADD MORE FRIENDS TO THIS LIST.
// Returns the Browser object whose window was most recently active. If the
// most recently open Browser's window was closed, returns the first Browser
// in the list. If no Browsers exist, returns NULL.
//
// WARNING: this is NULL until a browser becomes active. If during startup
// a browser does not become active (perhaps the user launches Chrome, then
// clicks on another app before the first browser window appears) then this
// returns NULL.
// WARNING #2: this will always be NULL in unit tests run on the bots.
// THIS FUNCTION IS PRIVATE AND NOT TO BE USED AS A REPLACEMENT FOR RELEVANT
// CONTEXT.
static Browser* GetLastActive();
};
#endif // CHROME_BROWSER_UI_BROWSER_LIST_H_
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