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// Copyright (c) 2011 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 COMPONENTS_APP_MODAL_APP_MODAL_DIALOG_H_
#define COMPONENTS_APP_MODAL_APP_MODAL_DIALOG_H_
#include <string>
#include "base/basictypes.h"
#include "base/strings/string16.h"
#include "build/build_config.h"
namespace content {
class WebContents;
}
namespace app_modal {
class NativeAppModalDialog;
// 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.
AppModalDialog(content::WebContents* web_contents,
const base::string16& title);
virtual ~AppModalDialog();
// Called by the AppModalDialogQueue to show this dialog.
void ShowModalDialog();
// Called by the AppModalDialogQueue to activate the dialog.
void ActivateModalDialog();
// Closes the dialog if it is showing.
void CloseModalDialog();
// Completes dialog handling, shows next modal dialog from the queue.
// TODO(beng): Get rid of this method.
void CompleteDialog();
base::string16 title() const { return title_; }
NativeAppModalDialog* native_dialog() const { return native_dialog_; }
content::WebContents* web_contents() const { return web_contents_; }
// 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.
bool IsValid();
// Methods overridable by AppModalDialog subclasses:
// Invalidates the dialog, therefore causing it to not be shown when its turn
// to be shown comes around.
virtual void Invalidate();
// Used only for testing. Returns whether the dialog is a JavaScript modal
// dialog.
virtual bool IsJavaScriptModalDialog();
protected:
// Overridden by subclasses to create the feature-specific native dialog box.
virtual NativeAppModalDialog* CreateNativeDialog() = 0;
private:
// Information about the message box is held in the following variables.
base::string16 title_;
// True if CompleteDialog was called.
bool completed_;
// False if the dialog should no longer be shown, e.g. because the underlying
// tab navigated away while the dialog was queued.
bool valid_;
// The toolkit-specific implementation of the app modal dialog box.
NativeAppModalDialog* native_dialog_;
content::WebContents* web_contents_;
DISALLOW_COPY_AND_ASSIGN(AppModalDialog);
};
// An interface to observe that a modal dialog is shown.
class AppModalDialogObserver {
public:
AppModalDialogObserver();
virtual ~AppModalDialogObserver();
// Called when the modal dialog is shown.
virtual void Notify(AppModalDialog* dialog) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(AppModalDialogObserver);
};
} // namespace app_modal
#endif // COMPONENTS_APP_MODAL_APP_MODAL_DIALOG_H_
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