Make Textfield more portable....

views/controls/textfield/native_textfield_wrapper.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 VIEWS_CONTROLS_TEXTFIELD_NATIVE_TEXTFIELD_WRAPPER_H_
+#define VIEWS_CONTROLS_TEXTFIELD_NATIVE_TEXTFIELD_WRAPPER_H_
+
+#include "base/gfx/native_widget_types.h"
+
+namespace views {
+
+class Textfield;
+class View;
+
+// An interface implemented by an object that provides a platform-native
+// text field.
+class NativeTextfieldWrapper {
+ public:
+  // The Textfield calls this when it is destroyed to clean up the wrapper
+  // object.
+  virtual ~NativeTextfieldWrapper() {}
+
+  // Gets the text displayed in the wrapped native text field.
+  virtual std::wstring GetText() const = 0;
+  
+  // Updates the text displayed with the text held by the Textfield.
+  virtual void UpdateText() = 0;
+
+  // Adds the specified text to the text already displayed by the wrapped native
+  // text field.
+  virtual void AppendText(const std::wstring& text) = 0;
+
+  // Gets the text that is selected in the wrapped native text field.
+  virtual std::wstring GetSelectedText() const = 0;
+
+  // Selects all the text in the edit.  Use this in place of SetSelAll() to
+  // avoid selecting the "phantom newline" at the end of the edit.
+  virtual void SelectAll() = 0;
+
+  // Clears the selection within the edit field and sets the caret to the end.
+  virtual void ClearSelection() = 0;
+
+  // Updates the border display for the native text field with the state desired
+  // by the Textfield.
+  virtual void UpdateBorder() = 0;
+
+  // Updates the background color used when painting the native text field.
+  virtual void UpdateBackgroundColor() = 0;
+
+  // Updates the read-only state of the native text field.
+  virtual void UpdateReadOnly() = 0;
+
+  // Updates the font used to render text in the native text field.
+  virtual void UpdateFont() = 0;
+
+  // Updates the enabled state of the native text field.
+  virtual void UpdateEnabled() = 0;
+
+  // Sets the horizontal margins for the native text field.
+  virtual void SetHorizontalMargins(int left, int right) = 0;
+
+  // Sets the focus to the text field.
+  virtual void SetFocus() = 0;
+
+  // Retrieves the views::View that hosts the native control.
+  virtual View* GetView() = 0;
+
+  // Returns a handle to the underlying native view for testing.
+  virtual gfx::NativeView GetTestingHandle() const = 0;
+
+  // Creates an appropriate NativeTextfieldWrapper for the platform.
+  static NativeTextfieldWrapper* CreateWrapper(Textfield* field);
+};
+
+}  // namespace views
+
+#endif  // #ifndef VIEWS_CONTROLS_TEXTFIELD_NATIVE_TEXTFIELD_WRAPPER_H_