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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_COMMAND_CONTROLLER_H_
#define CHROME_BROWSER_UI_BROWSER_COMMAND_CONTROLLER_H_
#include <vector>
#include "base/prefs/pref_change_registrar.h"
#include "base/prefs/pref_member.h"
#include "chrome/browser/command_updater.h"
#include "chrome/browser/command_updater_delegate.h"
#include "chrome/browser/sessions/tab_restore_service_observer.h"
#include "chrome/browser/ui/tabs/tab_strip_model_observer.h"
#include "ui/base/window_open_disposition.h"
class Browser;
class BrowserWindow;
class Profile;
namespace content {
struct NativeWebKeyboardEvent;
}
namespace chrome {
class BrowserCommandController : public CommandUpdaterDelegate,
public TabStripModelObserver,
public TabRestoreServiceObserver {
public:
explicit BrowserCommandController(Browser* browser);
virtual ~BrowserCommandController();
CommandUpdater* command_updater() { return &command_updater_; }
bool block_command_execution() const { return block_command_execution_; }
// Returns true if |command_id| is a reserved command whose keyboard shortcuts
// should not be sent to the renderer or |event| was triggered by a key that
// we never want to send to the renderer.
bool IsReservedCommandOrKey(int command_id,
const content::NativeWebKeyboardEvent& event);
// Sets if command execution shall be blocked. If |block| is true then
// following calls to ExecuteCommand() or ExecuteCommandWithDisposition()
// method will not execute the command, and the last blocked command will be
// recorded for retrieval.
void SetBlockCommandExecution(bool block);
// Gets the last blocked command after calling SetBlockCommandExecution(true).
// Returns the command id or -1 if there is no command blocked. The
// disposition type of the command will be stored in |*disposition| if it's
// not NULL.
int GetLastBlockedCommand(WindowOpenDisposition* disposition);
// Notifies the controller that state has changed in one of the following
// areas and it should update command states.
void TabStateChanged();
void ZoomStateChanged();
void ContentRestrictionsChanged();
void FullscreenStateChanged();
void PrintingStateChanged();
void LoadingStateChanged(bool is_loading, bool force);
// Shared state updating: these functions are static and public to share with
// outside code.
// Updates the open-file state.
static void UpdateOpenFileState(CommandUpdater* command_updater);
// Update commands whose state depends on incognito mode availability and that
// only depend on the profile.
static void UpdateSharedCommandsForIncognitoAvailability(
CommandUpdater* command_updater,
Profile* profile);
private:
class InterstitialObserver;
// Overridden from CommandUpdaterDelegate:
virtual void ExecuteCommandWithDisposition(
int id,
WindowOpenDisposition disposition) OVERRIDE;
// Overridden from TabStripModelObserver:
virtual void TabInsertedAt(content::WebContents* contents,
int index,
bool foreground) OVERRIDE;
virtual void TabDetachedAt(content::WebContents* contents,
int index) OVERRIDE;
virtual void TabReplacedAt(TabStripModel* tab_strip_model,
content::WebContents* old_contents,
content::WebContents* new_contents,
int index) OVERRIDE;
virtual void TabBlockedStateChanged(content::WebContents* contents,
int index) OVERRIDE;
// Overridden from TabRestoreServiceObserver:
virtual void TabRestoreServiceChanged(TabRestoreService* service) OVERRIDE;
virtual void TabRestoreServiceDestroyed(TabRestoreService* service) OVERRIDE;
virtual void TabRestoreServiceLoaded(TabRestoreService* service) OVERRIDE;
// Returns true if the regular Chrome UI (not the fullscreen one and
// not the single-tab one) is shown. Used for updating window command states
// only. Consider using SupportsWindowFeature if you need the mentioned
// functionality anywhere else.
bool IsShowingMainUI();
// Initialize state for all browser commands.
void InitCommandState();
// Update commands whose state depends on incognito mode availability.
void UpdateCommandsForIncognitoAvailability();
// Update commands whose state depends on the tab's state.
void UpdateCommandsForTabState();
// Update Zoom commands based on zoom state.
void UpdateCommandsForZoomState();
// Updates commands when the content's restrictions change.
void UpdateCommandsForContentRestrictionState();
// Updates commands for enabling developer tools.
void UpdateCommandsForDevTools();
// Updates commands for bookmark editing.
void UpdateCommandsForBookmarkEditing();
// Updates commands that affect the bookmark bar.
void UpdateCommandsForBookmarkBar();
// Updates commands that affect file selection dialogs in aggregate,
// namely the save-page-as state and the open-file state.
void UpdateCommandsForFileSelectionDialogs();
// Update commands whose state depends on the type of fullscreen mode the
// window is in.
void UpdateCommandsForFullscreenMode();
// Updates the printing command state.
void UpdatePrintingState();
// Updates the SHOW_SYNC_SETUP menu entry.
void OnSigninAllowedPrefChange();
// Updates the save-page-as command state.
void UpdateSaveAsState();
// Updates the show-sync command state.
void UpdateShowSyncState(bool show_main_ui);
// Ask the Reload/Stop button to change its icon, and update the Stop command
// state. |is_loading| is true if the current WebContents is loading.
// |force| is true if the button should change its icon immediately.
void UpdateReloadStopState(bool is_loading, bool force);
// Updates commands for find.
void UpdateCommandsForFind();
void UpdateTabRestoreCommandState();
// Add/remove observers for interstitial attachment/detachment from
// |contents|.
void AddInterstitialObservers(content::WebContents* contents);
void RemoveInterstitialObservers(content::WebContents* contents);
inline BrowserWindow* window();
inline Profile* profile();
Browser* browser_;
// The CommandUpdater that manages the browser window commands.
CommandUpdater command_updater_;
// Indicates if command execution is blocked.
bool block_command_execution_;
// Stores the last blocked command id when |block_command_execution_| is true.
int last_blocked_command_id_;
// Stores the disposition type of the last blocked command.
WindowOpenDisposition last_blocked_command_disposition_;
std::vector<InterstitialObserver*> interstitial_observers_;
PrefChangeRegistrar profile_pref_registrar_;
PrefChangeRegistrar local_pref_registrar_;
BooleanPrefMember pref_signin_allowed_;
DISALLOW_COPY_AND_ASSIGN(BrowserCommandController);
};
} // namespace chrome
#endif // CHROME_BROWSER_UI_BROWSER_COMMAND_CONTROLLER_H_
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