Add glue for supporting custom MIME types in DataTransfer.

BUG=31037
TEST=none in this patch, will be landed in WebKit as layout tests.

Review URL: http://codereview.chromium.org/8775025

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@112927 0039d316-1c4b-4281-b951-d872f2087c98

5 files changed, 37 insertions, 1 deletions

diff --git a/webkit/glue/clipboard_client.h b/webkit/glue/clipboard_client.h
index 92e8c88..7fe395d 100644
--- a/webkit/glue/clipboard_client.h
+++ b/webkit/glue/clipboard_client.h
@@ -59,6 +59,11 @@ class ClipboardClient {
   // Reads and image from the clipboard, if available.
   virtual void ReadImage(ui::Clipboard::Buffer buffer, std::string* data) = 0;
 
+  // Reads a custom data type from the clipboard, if available.
+  virtual void ReadCustomData(ui::Clipboard::Buffer buffer,
+                              const string16& type,
+                              string16* data) = 0;
+
   // Creates a context to write clipboard data. May return NULL.
   virtual WriteContext* CreateWriteContext() = 0;
 };
diff --git a/webkit/glue/webclipboard_impl.cc b/webkit/glue/webclipboard_impl.cc
index 1f2019b..4f2dd99 100644
--- a/webkit/glue/webclipboard_impl.cc
+++ b/webkit/glue/webclipboard_impl.cc
@@ -173,6 +173,17 @@ WebData WebClipboardImpl::readImage(Buffer buffer) {
   return WebData(png_data);
 }
 
+WebString WebClipboardImpl::readCustomData(Buffer buffer,
+                                           const WebString& type) {
+  ui::Clipboard::Buffer buffer_type;
+  if (!ConvertBufferType(buffer, &buffer_type))
+    return WebString();
+
+  string16 data;
+  client_->ReadCustomData(buffer_type, type, &data);
+  return data;
+}
+
 void WebClipboardImpl::writeHTML(
     const WebString& html_text, const WebURL& source_url,
     const WebString& plain_text, bool write_smart_paste) {
diff --git a/webkit/glue/webclipboard_impl.h b/webkit/glue/webclipboard_impl.h
index c3ba604..df72609 100644
--- a/webkit/glue/webclipboard_impl.h
+++ b/webkit/glue/webclipboard_impl.h
@@ -40,6 +40,8 @@ class WEBKIT_GLUE_EXPORT WebClipboardImpl :
       unsigned* fragment_start,
       unsigned* fragment_end);
   virtual WebKit::WebData readImage(Buffer buffer);
+  virtual WebKit::WebString readCustomData(
+      Buffer buffer, const WebKit::WebString& type);
   virtual void writeHTML(
       const WebKit::WebString& html_text,
       const WebKit::WebURL& source_url,
diff --git a/webkit/glue/webdropdata.cc b/webkit/glue/webdropdata.cc
index dc68365..be45487 100644
--- a/webkit/glue/webdropdata.cc
+++ b/webkit/glue/webdropdata.cc
@@ -1,9 +1,11 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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 "webkit/glue/webdropdata.h"
 
+#include <utility>
+
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebData.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebDragData.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
@@ -33,6 +35,11 @@ WebDropData::WebDropData(const WebDragData& drag_data)
   WebData contents = drag_data.fileContent();
   if (!contents.isEmpty())
     file_contents.assign(contents.data(), contents.size());
+  WebVector<WebDragData::CustomData> custom_data_copy = drag_data.customData();
+  for (size_t i = 0; i < custom_data_copy.size(); ++i) {
+    custom_data.insert(std::make_pair(custom_data_copy[i].type,
+                                      custom_data_copy[i].data));
+  }
 }
 
 WebDropData::WebDropData() {
@@ -53,5 +60,13 @@ WebDragData WebDropData::ToDragData() const {
   result.setHTMLBaseURL(html_base_url);
   result.setFileContentFilename(file_description_filename);
   result.setFileContent(WebData(file_contents.data(), file_contents.size()));
+  WebVector<WebDragData::CustomData> custom_data_vector(custom_data.size());
+  size_t i = 0;
+  for (std::map<string16, string16>::const_iterator it = custom_data.begin();
+       it != custom_data.end();
+       ++it, ++i) {
+    WebDragData::CustomData data = {it->first, it->second};
+    custom_data_vector[i] = data;
+  }
   return result;
 }
diff --git a/webkit/glue/webdropdata.h b/webkit/glue/webdropdata.h
index 8b79a78..82d08f2 100644
--- a/webkit/glue/webdropdata.h
+++ b/webkit/glue/webdropdata.h
@@ -9,6 +9,7 @@
 #ifndef WEBKIT_GLUE_WEBDROPDATA_H_
 #define WEBKIT_GLUE_WEBDROPDATA_H_
 
+#include <map>
 #include <string>
 #include <vector>
 
@@ -56,6 +57,8 @@ struct WEBKIT_GLUE_EXPORT WebDropData {
   string16 file_description_filename;
   std::string file_contents;
 
+  std::map<string16, string16> custom_data;
+
   // Convert to a WebDragData object.
   WebKit::WebDragData ToDragData() const;