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// Copyright (c) 2013 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_NOTIFICATIONS_MESSAGE_CENTER_TRAY_BRIDGE_H_
#define CHROME_BROWSER_UI_COCOA_NOTIFICATIONS_MESSAGE_CENTER_TRAY_BRIDGE_H_
#import <AppKit/AppKit.h>
#include "base/basictypes.h"
#include "base/mac/scoped_nsobject.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/prefs/pref_member.h"
#include "ui/message_center/message_center.h"
#include "ui/message_center/message_center_tray_delegate.h"
@class MCPopupCollection;
@class MCStatusItemView;
@class MCTrayController;
namespace message_center {
class MessageCenter;
class MessageCenterTray;
}
// MessageCenterTrayBridge is the owner of all the Cocoa UI objects for the
// message_center. It bridges C++ notifications from the MessageCenterTray to
// the various UI objects.
class MessageCenterTrayBridge :
public message_center::MessageCenterTrayDelegate {
public:
explicit MessageCenterTrayBridge(
message_center::MessageCenter* message_center);
~MessageCenterTrayBridge() override;
// message_center::MessageCenterTrayDelegate:
void OnMessageCenterTrayChanged() override;
bool ShowPopups() override;
void HidePopups() override;
bool ShowMessageCenter() override;
void HideMessageCenter() override;
bool ShowNotifierSettings() override;
bool IsContextMenuEnabled() const override;
message_center::MessageCenterTray* GetMessageCenterTray() override;
message_center::MessageCenter* message_center() { return message_center_; }
private:
friend class MessageCenterTrayBridgeTest;
// Updates the unread count on the status item.
void UpdateStatusItem();
// Opens the message center tray.
void OpenTrayWindow();
// Returns whether the status item allowed based on the preference value.
bool CanShowStatusItem() const;
// Returns whether the status item should be shown if allowed.
bool NeedsStatusItem() const;
// Constructs the status item view and registers its callback.
void ShowStatusItem();
// Destroys the status item view.
void HideStatusItem();
// Called after returning to the event loop from the
// OnMessageCenterTrayChanged event to prevent multiple updates from being
// rendered as the message center is modified.
void HandleMessageCenterTrayChanged();
// Notifies that the user has changed the show menubar item preference.
void OnShowStatusItemChanged();
// The global, singleton message center model object. Weak.
message_center::MessageCenter* message_center_;
// C++ controller for the notification tray UI.
scoped_ptr<message_center::MessageCenterTray> tray_;
// Obj-C window controller for the notification tray.
base::scoped_nsobject<MCTrayController> tray_controller_;
// View that is displayed on the system menu bar item.
base::scoped_nsobject<MCStatusItemView> status_item_view_;
// Obj-C controller for the on-screen popup notifications.
base::scoped_nsobject<MCPopupCollection> popup_collection_;
// Used to ensure only one status item update happens in a given call stack.
bool status_item_update_pending_;
// A PrefMember that calls OnShowStatusItemChanged when the pref is updated
// by the user's selection in the main menu.
BooleanPrefMember show_status_item_;
// Weak pointer factory to posts tasks to self.
base::WeakPtrFactory<MessageCenterTrayBridge> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(MessageCenterTrayBridge);
};
#endif // CHROME_BROWSER_UI_COCOA_NOTIFICATIONS_MESSAGE_CENTER_TRAY_BRIDGE_H_
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