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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#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(ChromeViews::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();
private:
// Shows |dialog| and notifies the BrowserList that a modal dialog is showing.
static void ShowModalDialog(ChromeViews::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<ChromeViews::AppModalDialogDelegate*>*
app_modal_dialog_queue_;
};
#endif // CHROME_BROWSER_APP_MODAL_DIALOG_QUEUE_H__
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