Rewrote the clipboard API to be more concurrent. Added a helper class to make...

base/scoped_clipboard_writer.h

Index: base/scoped_clipboard_writer.h
===================================================================
--- base/scoped_clipboard_writer.h	(revision 0)
+++ base/scoped_clipboard_writer.h	(revision 0)
@@ -0,0 +1,62 @@
+// Copyright (c) 2006-2008 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 SCOPED_CLIPBOARD_WRITER_H_
+#define SCOPED_CLIPBOARD_WRITER_H_
+
+#include "base/clipboard.h"
+
+#if defined(OS_WIN)
+class SkBitmap;
+#endif
+
+// This class is a wrapper for |Clipboard| that handles packing data
+// into a Clipboard::ObjectMap.
+// NB: You should probably NOT be using this class if you include
+// webkit_glue.h. Use ScopedClipboardWriterGlue instead.
+class ScopedClipboardWriter {
+ public:
+  // Create an instance that is a simple wrapper around clipboard.
+  ScopedClipboardWriter(Clipboard* clipboard);
+
+  ~ScopedClipboardWriter();
+
+  // Adds UNICODE and ASCII text to the clipboard.
+  void WriteText(const std::wstring& text);
+
+  // Adds HTML to the clipboard.  The url parameter is optional, but especially
+  // useful if the HTML fragment contains relative links
+  void WriteHTML(const std::wstring& markup, const std::string& src_url);
+
+  // Adds a bookmark to the clipboard
+  void WriteBookmark(const std::wstring& title, const std::string& url);
+
+  // Adds both a bookmark and an HTML hyperlink to the clipboard.  It is a
+  // convenience wrapper around WriteBookmark and WriteHTML.
+  void WriteHyperlink(const std::wstring& title, const std::string& url);
+
+  // Adds a file or group of files to the clipboard.
+  void WriteFile(const std::wstring& file);
+  void WriteFiles(const std::vector<std::wstring>& files);
+
+#if defined(OS_WIN)
+  // Used by WebKit to determine whether WebKit wrote the clipboard last
+  void WriteWebSmartPaste();
+
+  // Adds a bitmap to the clipboard
+  // This is the slowest way to copy a bitmap to the clipboard as we must first
+  // memcpy the pixels into GDI and the blit the bitmap to the clipboard.
+  // Pixel format is assumed to be 32-bit BI_RGB.
+  void WriteBitmapFromPixels(const void* pixels, const gfx::Size& size);
+#endif
+
+ protected:
+  Clipboard::ObjectMap objects_;
+  Clipboard* clipboard_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ScopedClipboardWriter);
+};
+
+#endif  // SCOPED_CLIPBOARD_WRITER_H_