| // 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_PROCESS_SINGLETON_MODAL_DIALOG_LOCK_H_ |
| #define CHROME_BROWSER_PROCESS_SINGLETON_MODAL_DIALOG_LOCK_H_ |
| |
| #include "base/basictypes.h" |
| #include "base/callback_forward.h" |
| #include "chrome/browser/process_singleton.h" |
| #include "ui/gfx/native_widget_types.h" |
| |
| namespace base { |
| class CommandLine; |
| class FilePath; |
| } |
| |
| // Provides a ProcessSingleton::NotificationCallback that prevents |
| // command-line handling when a modal dialog is active during startup. The |
| // client must ensure that SetActiveModalDialog is called appropriately when |
| // such dialogs are displayed or dismissed. |
| // |
| // While a dialog is active, the ProcessSingleton notification |
| // callback will handle but ignore notifications: |
| // 1. Neither this process nor the invoking process will handle the command |
| // line. |
| // 2. The active dialog is brought to the foreground and/or the taskbar icon |
| // flashed (using ::SetForegroundWindow on Windows). |
| // |
| // Otherwise, the notification is forwarded to a wrapped NotificationCallback. |
| class ProcessSingletonModalDialogLock { |
| public: |
| typedef base::Callback<void(gfx::NativeWindow)> SetForegroundWindowHandler; |
| explicit ProcessSingletonModalDialogLock( |
| const ProcessSingleton::NotificationCallback& original_callback); |
| |
| ProcessSingletonModalDialogLock( |
| const ProcessSingleton::NotificationCallback& original_callback, |
| const SetForegroundWindowHandler& set_foreground_window_handler); |
| |
| ~ProcessSingletonModalDialogLock(); |
| |
| // Receives a handle to the active modal dialog, or NULL if the active dialog |
| // is dismissed. |
| void SetActiveModalDialog(gfx::NativeWindow active_dialog); |
| |
| // Returns the ProcessSingleton::NotificationCallback. |
| // The callback is only valid during the lifetime of the |
| // ProcessSingletonModalDialogLock instance. |
| ProcessSingleton::NotificationCallback AsNotificationCallback(); |
| |
| private: |
| bool NotificationCallbackImpl(const base::CommandLine& command_line, |
| const base::FilePath& current_directory); |
| |
| gfx::NativeWindow active_dialog_; |
| ProcessSingleton::NotificationCallback original_callback_; |
| SetForegroundWindowHandler set_foreground_window_handler_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ProcessSingletonModalDialogLock); |
| }; |
| |
| #endif // CHROME_BROWSER_PROCESS_SINGLETON_MODAL_DIALOG_LOCK_H_ |