Adding a message box to confirm if the user really wants to delete all stored...

chrome/browser/views/confirm_message_box_dialog.h

+// 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_VIEWS_CONFIRM_MESSAGE_BOX_DIALOG_H_
+#define CHROME_BROWSER_VIEWS_CONFIRM_MESSAGE_BOX_DIALOG_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/gfx/native_widget_types.h"
+#include "base/message_loop.h"
+#include "views/window/dialog_delegate.h"
+
+class MessageBoxView;
+
+class ConfirmMessageBoxDialog : public views::DialogDelegate,
+                                public MessageLoopForUI::Dispatcher {
+ public:
+  // The method blocks while the dialog is showing, and returns the the value
+  // of the user choice, if the user click in Yes button it returns true,
+  // otherwise false
+  static bool Run(gfx::NativeWindow parent,
+                  const std::wstring& message_text,
+                  const std::wstring& window_title);
+
+  virtual ~ConfirmMessageBoxDialog();
+
+  bool accepted() const { return accepted_; }
+
+  // views::DialogDelegate implementation.
+  virtual int GetDialogButtons() const;
+  virtual std::wstring GetWindowTitle() const;
+  virtual std::wstring GetDialogButtonLabel(
+      MessageBoxFlags::DialogButton button) const;
+  virtual bool Accept();
+  virtual bool Cancel();
+
+  // views::WindowDelegate  implementation.
+  virtual bool IsModal() const { return true; }
+  virtual views::View* GetContentsView();
+  virtual void DeleteDelegate();
+
+  // MessageLoop::Dispatcher implementation.
+  virtual bool Dispatch(const MSG& msg);
+
+ private:
+  ConfirmMessageBoxDialog(gfx::NativeWindow parent,
+                          const std::wstring& message_text,
+                          const std::wstring& window_title);
+
+  // The message which will be shown to user.
+  std::wstring message_text_;
+
+  // This is the Title bar text.
+  std::wstring window_title_;
+
+  MessageBoxView* message_box_view_;
+
+  // Returns true if the user clicks in Yes button, otherwise false
+  bool accepted_;
+
+  // Used to keep track of whether or not to block the message loop (still
+  // waiting for the user to dismiss the dialog).
+  bool is_blocking_;
+
+  DISALLOW_COPY_AND_ASSIGN(ConfirmMessageBoxDialog);
+};
+
+#endif  // CHROME_BROWSER_VIEWS_CONFIRM_MESSAGE_BOX_DIALOG_H_