views: Add a new ctor to MessageBoxView that takes only a InitParams.

ui/views/controls/message_box_view.h

 // Copyright (c) 2012 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 UI_VIEWS_CONTROLS_MESSAGE_BOX_VIEW_H_
 #define UI_VIEWS_CONTROLS_MESSAGE_BOX_VIEW_H_
 #pragma once
 
-#include <string>
 #include <vector>
 
 #include "base/string16.h"
 #include "ui/views/view.h"
 
 namespace views {
 
 class Checkbox;
 class ImageView;
 class Label;
@@ skipping 10 matching lines @@
     // dialog text, each paragraph's directionality is auto-detected using the
     // directionality of the paragraph's first strong character's. Please refer
     // to HTML5 spec for details.
     // http://dev.w3.org/html5/spec/Overview.html#text-rendered-in-native-user-interfaces:
     // The spec does not say anything about alignment. And we choose to
     // align all paragraphs according to the direction of the first paragraph.
     DETECT_DIRECTIONALITY = 1 << 0,
     HAS_PROMPT_FIELD = 1 << 1,
   };
 
-  MessageBoxView(int options,
-                 const string16& message,
-                 const string16& default_prompt,
-                 int message_width);
+  struct InitParams {
+    explicit InitParams(const string16& message);
+    ~InitParams();
 
-  MessageBoxView(int options,
-                 const string16& message,
-                 const string16& default_prompt);
+    uint16 options;
+    string16 message;
+    string16 default_prompt;
+    int message_width;
+  };
+
+  explicit MessageBoxView(const InitParams& params);
 
   virtual ~MessageBoxView();
 
   // Returns the text box.
   views::Textfield* text_box() { return prompt_field_; }
 
   // Returns user entered data in the prompt field.
   string16 GetInputText();
 
   // Returns true if a checkbox is selected, false otherwise. (And false if
@@ skipping 19 matching lines @@
   // View:
   virtual void ViewHierarchyChanged(bool is_add,
                                     views::View* parent,
                                     views::View* child) OVERRIDE;
   // Handles Ctrl-C and writes the message in the system clipboard.
   virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
 
  private:
   // Sets up the layout manager and initializes the message labels and prompt
   // field. This should only be called once, from the constructor.
-  void Init(int options, const string16& message, const string16& prompt);
+  void Init(const InitParams& params);
 
   // Sets up the layout manager based on currently initialized views. Should be
   // called when a view is initialized or changed.
   void ResetLayoutManager();
 
   // Message for the message box.
   std::vector<Label*> message_labels_;
 
   // Input text field for the message box.
   Textfield* prompt_field_;
 
   // Icon displayed in the upper left corner of the message box.
   ImageView* icon_;
 
   // Checkbox for the message box.
   Checkbox* checkbox_;
 
   // Maximum width of the message label.
   int message_width_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageBoxView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_MESSAGE_BOX_VIEW_H_