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// 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/window/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__
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