Refactor AppModalDialogQueue and move JS Alert boxes into a MVC.

chrome/browser/app_modal_dialog.h

Index: chrome/browser/app_modal_dialog.h
diff --git a/chrome/browser/app_modal_dialog.h b/chrome/browser/app_modal_dialog.h
new file mode 100644
index 0000000000000000000000000000000000000000..2f09a7eb4116b72375cfff2f00f2b09edd2d3a15
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+++ b/chrome/browser/app_modal_dialog.h
@@ -0,0 +1,109 @@
+// 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_
+
+#include <string>
+
+#include "build/build_config.h"
+#include "chrome/common/notification_observer.h"
+#include "chrome/common/notification_registrar.h"
+
+#if defined(OS_WIN)
+class JavascriptMessageBoxDialog;
+typedef JavascriptMessageBoxDialog* NativeDialog;
+#elif defined(OS_LINUX)
+typedef void* NativeDialog;
+#elif defined(OS_MACOSX)
+typedef void* NativeDialog;
+#endif
+
+class WebContents;
+namespace IPC {
+class Message;
+}
+
+// A controller+model class for javascript alert, confirm, prompt, and
+// onbeforeunload dialog boxes.  |NativeDialog| is a platform specific
+// view.
+class AppModalDialog : public NotificationObserver {
+ public:
+  // A union of data necessary to determine the type of message box to
+  // show.  |dialog_flags| is a MessageBox flag.
+  AppModalDialog(WebContents* web_contents,
+                 const std::wstring& title,
+                 int dialog_flags,
+                 const std::wstring& message_text,
+                 const std::wstring& default_prompt_text,
+                 bool display_suppress_checkbox,
+                 bool is_before_unload_dialog,
+                 IPC::Message* reply_msg);
+  ~AppModalDialog();
+
+  // Called by the app modal window queue when it is time to show this window.
+  void ShowModalDialog();
+
+  /////////////////////////////////////////////////////////////////////////////
+  // The following methods are platform specific and should be implemented in
+  // the platform specific .cc files.
+  // Create the platform specific NativeDialog and display it.
+  void CreateAndShowDialog();
+
+  // Close the dialog if it is showing.
+  void CloseModalDialog();
+
+  // Called by the app modal window queue to activate the window.
+  void ActivateModalDialog();
+
+  /////////////////////////////////////////////////////////////////////////////
+  // Getters so NativeDialog can get information about the message box.
+  WebContents* web_contents() {
+    return web_contents_;
+  }
+  int dialog_flags() {
+    return dialog_flags_;
+  }
+  std::wstring title() {
+    return title_;
+  }
+  bool is_before_unload_dialog() {
+    return is_before_unload_dialog_;
+  }
+
+  // Callbacks from NativeDialog when the user accepts or cancels the dialog.
+  void OnCancel();
+  void OnAccept(const std::wstring& prompt_text, bool suppress_js_messages);
+
+  // Helper methods used to query or control the dialog. This is used by
+  // automation.
+  int GetDialogButtons();
+  void AcceptWindow();
+  void CancelWindow();
+
+ private:
+  void InitNotifications();
+
+  // NotificationObserver implementation.
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
+  NotificationRegistrar registrar_;
+
+  // A reference to the platform native dialog box.
+  NativeDialog dialog_;
+
+  // Information about the message box is held in the following variables.
+  WebContents* web_contents_;
+  std::wstring title_;
+  int dialog_flags_;
+  std::wstring message_text_;
+  std::wstring default_prompt_text_;
+  bool display_suppress_checkbox_;
+  bool is_before_unload_dialog_;
+  IPC::Message* reply_msg_;
+};
+
+#endif  // #ifndef CHROME_BROWSER_APP_MODAL_DIALOG_H_