| // Copyright (c) 2006-2008 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_APP_MODAL_DIALOG_QUEUE_H__ |
| #define CHROME_BROWSER_APP_MODAL_DIALOG_QUEUE_H__ |
| |
| #include <queue> |
| |
| #include "chrome/views/app_modal_dialog_delegate.h" |
| |
| // Keeps a queue of AppModalDialogDelegates, making sure only one app modal |
| // dialog is shown at a time. |
| class AppModalDialogQueue { |
| public: |
| // Adds a modal dialog to the queue, if there are no other dialogs in the |
| // queue, the dialog will be shown immediately. Once it is shown, the |
| // most recently active browser window (or whichever is currently active) |
| // will be app modal, meaning it will be activated if the user tries to |
| // activate any other browser windows. So the dialog being shown should |
| // assure it is the child of BrowserList::GetLastActive() so that it is |
| // activated as well. See browser_list.h for more notes about our somewhat |
| // sloppy app modality. |
| // Note: The AppModalDialogDelegate |dialog| must be window modal before it |
| // can be added as app modal. |
| static void AddDialog(views::AppModalDialogDelegate* dialog); |
| |
| // Removes the current dialog in the queue (the one that is being shown). |
| // Shows the next dialog in the queue, if any is present. This does not |
| // ensure that the currently showing dialog is closed, it just makes it no |
| // longer app modal. |
| static void ShowNextDialog(); |
| |
| // Activates and shows the current dialog, if the user clicks on one of the |
| // windows disabled by the presence of an app modal dialog. This forces |
| // the window to be visible on the display even if desktop manager software |
| // opened the dialog on another virtual desktop. Assumes there is currently a |
| // dialog being shown. (Call BrowserList::IsShowingAppModalDialog to test |
| // this condition). |
| static void ActivateModalDialog(); |
| |
| // Returns true if there is currently an active app modal dialog box. |
| static bool HasActiveDialog() { |
| return active_dialog_ != NULL; |
| } |
| |
| // Accessor for |active_dialog_|. |
| static views::AppModalDialogDelegate* active_dialog() { |
| return active_dialog_; |
| } |
| |
| private: |
| // Shows |dialog| and notifies the BrowserList that a modal dialog is showing. |
| static void ShowModalDialog(views::AppModalDialogDelegate* dialog); |
| |
| // Contains all app modal dialogs which are waiting to be shown, with the |
| // currently modal dialog at the front of the queue. |
| static std::queue<views::AppModalDialogDelegate*>* |
| app_modal_dialog_queue_; |
| |
| // The currently active app-modal dialog box's delegate. NULL if there is no |
| // active app-modal dialog box. |
| static views::AppModalDialogDelegate* active_dialog_; |
| }; |
| |
| #endif // CHROME_BROWSER_APP_MODAL_DIALOG_QUEUE_H__ |
| |