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chrome/browser/ui/tab_modal_dialog_delegate.h

+// 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 CHROME_BROWSER_UI_TAB_MODAL_DIALOG_DELEGATE_H_
+#define CHROME_BROWSER_UI_TAB_MODAL_DIALOG_DELEGATE_H_
+#pragma once
+
+#include "base/callback.h"
+#include "base/compiler_specific.h"
+#include "base/string16.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+
+namespace gfx {
+class Image;
+}
+class ConstrainedWindow;
+class TabContents;
+
+// This class acts as the delegate for a simple tab-modal dialog confirming
+// whether the user wants to execute a certain action.
+class TabModalDialogDelegate : public content::NotificationObserver {
+ public:
+  explicit TabModalDialogDelegate(TabContents* tab_contents);
+  virtual ~TabModalDialogDelegate();
+
+  void set_window(ConstrainedWindow* window) { window_ = window; }
+
+  void Accept();
+  void Cancel();
+
+  // The title of the dialog. Note that the title is not shown on all platforms.
+  virtual string16 GetTitle() = 0;
+  virtual string16 GetMessage() = 0;
+
+  // Icon to show for the dialog. If this method is not overridden, a default
+  // icon (like the application icon) is shown.
+  virtual gfx::Image* GetIcon();
+
+  // Title for the accept and the cancel buttons.
+  // The default implementation uses IDS_OK and IDS_CANCEL.
+  virtual string16 GetAcceptButtonTitle();
+  virtual string16 GetCancelButtonTitle();
+
+  // GTK stock icon names for the accept and cancel buttons, respectively.
+  // The icons are only used on GTK. If these methods are not overriden,
+  // the buttons have no stock icons.
+  virtual const char* GetAcceptButtonIcon();
+  virtual const char* GetCancelButtonIcon();
+
+ protected:
+  ConstrainedWindow* window() { return window_; }
+
+  // content::NotificationObserver implementation.
+  // Watch for a new load or a closed tab and dismiss the dialog if they occur.
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
+  content::NotificationRegistrar registrar_;
+
+ private:
+  // Called when the user accepts or cancels the dialog, respectively.
+  virtual void OnAccepted() = 0;
+  virtual void OnCanceled() = 0;
+
+  // Close the dialog.
+  void CloseDialog();
+
+  ConstrainedWindow* window_;
+  // True iff we are in the process of closing, to avoid running callbacks
+  // multiple times.
+  bool closing_;
+
+  DISALLOW_COPY_AND_ASSIGN(TabModalDialogDelegate);
+};
+
+#endif  // CHROME_BROWSER_UI_TAB_MODAL_DIALOG_DELEGATE_H_