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// Copyright (c) 2009 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_H_
#define CHROME_BROWSER_APP_MODAL_DIALOG_H_
#pragma once
#include <string>
#include "base/basictypes.h"
#include "build/build_config.h"
#include "chrome/common/notification_observer.h"
#include "chrome/common/notification_registrar.h"
// Define NativeDialog type as platform specific dialog view.
#if defined(OS_WIN)
class ModalDialogDelegate;
typedef ModalDialogDelegate* NativeDialog;
#elif defined(OS_MACOSX)
typedef void* NativeDialog;
#elif defined(TOOLKIT_USES_GTK)
typedef struct _GtkDialog GtkDialog;
typedef struct _GtkWidget GtkWidget;
typedef int gint;
typedef GtkWidget* NativeDialog;
#endif
class TabContents;
namespace IPC {
class Message;
}
// A controller+model base class for modal dialogs.
class AppModalDialog {
public:
// A union of data necessary to determine the type of message box to
// show. |tab_contents| parameter is optional, if provided that tab will be
// activated before the modal dialog is displayed.
AppModalDialog(TabContents* tab_contents, const std::wstring& title);
virtual ~AppModalDialog();
// Called by the app modal window queue when it is time to show this window.
void ShowModalDialog();
// Returns true if the dialog is still valid. As dialogs are created they are
// added to the AppModalDialogQueue. When the current modal dialog finishes
// and it's time to show the next dialog in the queue IsValid is invoked.
// If IsValid returns false the dialog is deleted and not shown.
virtual bool IsValid() { return !skip_this_dialog_; }
/////////////////////////////////////////////////////////////////////////////
// The following methods are platform specific and should be implemented in
// the platform specific .cc files.
// Create the platform specific NativeDialog and display it. When the
// NativeDialog is closed, it should call OnAccept or OnCancel to notify the
// renderer of the user's action. The NativeDialog is also expected to
// delete the AppModalDialog associated with it.
virtual void CreateAndShowDialog();
#if defined(TOOLKIT_USES_GTK)
virtual void HandleDialogResponse(GtkDialog* dialog, gint response_id) = 0;
// Callback for dialog response calls, passes results to specialized
// HandleDialogResponse() implementation.
static void OnDialogResponse(GtkDialog* dialog, gint response_id,
AppModalDialog* app_modal_dialog);
#endif
// Close the dialog if it is showing.
virtual void CloseModalDialog();
// Called by the app modal window queue to activate the window.
void ActivateModalDialog();
// Completes dialog handling, shows next modal dialog from the queue.
void CompleteDialog();
// Dialog window title.
std::wstring title() {
return title_;
}
// Helper methods used to query or control the dialog. This is used by
// automation.
virtual int GetDialogButtons() = 0;
virtual void AcceptWindow() = 0;
virtual void CancelWindow() = 0;
protected:
// Cleans up the dialog class.
virtual void Cleanup();
// Creates the actual platform specific dialog view class.
virtual NativeDialog CreateNativeDialog() = 0;
// A reference to the platform native dialog box.
#if defined(OS_LINUX) || defined(OS_WIN)
NativeDialog dialog_;
#endif
// Parent tab contents.
TabContents* tab_contents_;
// Information about the message box is held in the following variables.
std::wstring title_;
// True if the dialog should no longer be shown, e.g. because the underlying
// tab navigated away while the dialog was queued.
bool skip_this_dialog_;
private:
DISALLOW_COPY_AND_ASSIGN(AppModalDialog);
};
#endif // CHROME_BROWSER_APP_MODAL_DIALOG_H_
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