Add chrome to the repository.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 103 insertions, 0 deletions

diff --git a/chrome/views/combo_box.h b/chrome/views/combo_box.h
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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef CHROME_VIEWS_COMBO_BOX_H__
+#define CHROME_VIEWS_COMBO_BOX_H__
+
+#include "chrome/views/native_control.h"
+
+namespace ChromeViews {
+////////////////////////////////////////////////////////////////////////////////
+//
+// ComboBox is a basic non editable combo box. It is initialized from a simple
+// model.
+//
+////////////////////////////////////////////////////////////////////////////////
+class ComboBox : public NativeControl {
+ public:
+  class Model {
+   public:
+    // Return the number of items in the combo box.
+    virtual int GetItemCount(ComboBox* source) = 0;
+
+    // Return the string that should be used to represent a given item.
+    virtual std::wstring GetItemAt(ComboBox* source, int index) = 0;
+  };
+
+  class Listener {
+   public:
+    // This is invoked once the selected item changed.
+    virtual void ItemChanged(ComboBox* combo_box,
+                             int prev_index,
+                             int new_index) = 0;
+  };
+
+  // |model is not owned by the combo box.
+  explicit ComboBox(Model* model);
+  virtual ~ComboBox();
+
+  // Register |listener| for item change events.
+  void SetListener(Listener* listener);
+
+  // Overriden from View.
+  virtual void GetPreferredSize(CSize* out);
+
+  // Overriden from NativeControl
+  virtual HWND CreateNativeControl(HWND parent_container);
+  virtual LRESULT OnCommand(UINT code, int id, HWND source);
+  virtual LRESULT OnNotify(int w_param, LPNMHDR l_param);
+
+  // Inform the combo box that its model changed.
+  void ModelChanged();
+
+  // Set / Get the selected item.
+  void SetSelectedItem(int index);
+  int GetSelectedItem();
+
+ private:
+  // Update a combo box from our model.
+  void UpdateComboBoxFromModel(HWND hwnd);
+
+  // Our model.
+  Model* model_;
+
+  // The current selection.
+  int selected_item_;
+
+  // Item change listener.
+  Listener* listener_;
+
+  // The min width, in pixels, for the text content.
+  int content_width_;
+
+  DISALLOW_EVIL_CONSTRUCTORS(ComboBox);
+};
+}
+
+#endif  // CHROME_VIEWS_COMBO_BOX_H__