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

base/scoped_clipboard_writer.cc

Index: base/scoped_clipboard_writer.cc
===================================================================
--- base/scoped_clipboard_writer.cc	(revision 0)
+++ base/scoped_clipboard_writer.cc	(revision 0)
@@ -0,0 +1,130 @@
+// 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.
+
+#include "base/scoped_clipboard_writer.h"
+
+#include "base/clipboard.h"
+#include "base/string_util.h"
+
+ScopedClipboardWriter::ScopedClipboardWriter(Clipboard* clipboard)
+    : clipboard_(clipboard) {
+}
+
+ScopedClipboardWriter::~ScopedClipboardWriter() {
+  if (!objects_.empty() && clipboard_)
+    clipboard_->WriteObjects(objects_);
+}
+
+void ScopedClipboardWriter::WriteText(const std::wstring& text) {
+  if (text.empty())
+    return;
+
+  std::string utf8_text = WideToUTF8(text);
+
+  Clipboard::ObjectMapParams params;
+  params.push_back(Clipboard::ObjectMapParam(utf8_text.begin(),
+                                             utf8_text.end()));
+  objects_[Clipboard::CBF_TEXT] = params;
+}
+
+void ScopedClipboardWriter::WriteHTML(const std::wstring& markup,
+                                      const std::string& src_url) {
+  if (markup.empty())
+    return;
+
+  std::string utf8_markup = WideToUTF8(markup);
+
+  Clipboard::ObjectMapParams params;
+  params.push_back(
+      Clipboard::ObjectMapParam(utf8_markup.begin(),
+                                         utf8_markup.end()));
+  if (!src_url.empty()) {
+    params.push_back(Clipboard::ObjectMapParam(src_url.begin(),
+                                               src_url.end()));
+  }
+
+  objects_[Clipboard::CBF_HTML] = params;
+}
+
+void ScopedClipboardWriter::WriteBookmark(const std::wstring& title,
+                                          const std::string& url) {
+  if (title.empty() || url.empty())
+    return;
+
+  std::string utf8_markup = WideToUTF8(title);
+
+  Clipboard::ObjectMapParams params;
+  params.push_back(Clipboard::ObjectMapParam(utf8_markup.begin(),
+                                             utf8_markup.end()));
+  params.push_back(Clipboard::ObjectMapParam(url.begin(), url.end()));
+  objects_[Clipboard::CBF_BOOKMARK] = params;
+}
+
+void ScopedClipboardWriter::WriteHyperlink(const std::wstring& title,
+                                           const std::string& url) {
+  if (title.empty() || url.empty())
+    return;
+
+  std::string utf8_markup = WideToUTF8(title);
+
+  Clipboard::ObjectMapParams params;
+  params.push_back(Clipboard::ObjectMapParam(utf8_markup.begin(),
+                                             utf8_markup.end()));
+  params.push_back(Clipboard::ObjectMapParam(url.begin(), url.end()));
+  objects_[Clipboard::CBF_LINK] = params;
+}
+
+void ScopedClipboardWriter::WriteFile(const std::wstring& file) {
+  WriteFiles(std::vector<std::wstring>(1, file));
+}
+
+// Save the filenames as a string separated by nulls and terminated with an
+// extra null.
+void ScopedClipboardWriter::WriteFiles(const std::vector<std::wstring>& files) {
+  if (files.empty())
+    return;
+
+  Clipboard::ObjectMapParam param;
+
+  for (std::vector<std::wstring>::const_iterator iter = files.begin();
+       iter != files.end(); ++iter) {
+    std::string filename = WideToUTF8(*iter);
+    for (std::string::const_iterator filename_iter = filename.begin();
+         filename_iter != filename.end(); ++filename_iter) {
+      param.push_back(*filename_iter);
+    }
+    param.push_back('\0');
+  }
+
+  param.push_back('\0');
+
+  Clipboard::ObjectMapParams params;
+  params.push_back(param);
+  objects_[Clipboard::CBF_FILES] = params;
+}
+
+#if defined(OS_WIN)
+void ScopedClipboardWriter::WriteWebSmartPaste() {
+  objects_[Clipboard::CBF_WEBKIT] = Clipboard::ObjectMapParams();
+}
+
+void ScopedClipboardWriter::WriteBitmapFromPixels(const void* pixels,
+                                                  const gfx::Size& size) {
+  Clipboard::ObjectMapParam param1, param2;
+  const char* pixels_data = reinterpret_cast<const char*>(pixels);
+  size_t pixels_len = 4 * size.width() * size.height();
+  for (size_t i = 0; i < pixels_len; i++)
+    param1.push_back(pixels_data[i]);
+
+  const char* size_data = reinterpret_cast<const char*>(&size);
+  size_t size_len = sizeof(gfx::Size);
+  for (size_t i = 0; i < size_len; i++)
+    param2.push_back(size_data[i]);
+
+  Clipboard::ObjectMapParams params;
+  params.push_back(param1);
+  params.push_back(param2);
+  objects_[Clipboard::CBF_BITMAP] = params;
+}
+#endif  // defined(OS_WIN)