Pepper/Flapper: Add IsFormatAvailable() to PPB_Flash_Clipboard.

webkit/plugins/ppapi/ppb_flash_clipboard_impl.cc

 // 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/plugins/ppapi/ppb_flash_clipboard_impl.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/logging.h"
 #include "base/ref_counted.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/private/ppb_flash_clipboard.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebClipboard.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCString.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebKitClient.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebString.h"
+#include "webkit/plugins/ppapi/common.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 #include "webkit/plugins/ppapi/resource_tracker.h"
 #include "webkit/plugins/ppapi/var.h"
 
 namespace webkit {
 namespace ppapi {
 
 namespace {
 
 const size_t kMaxClipboardWriteSize = 1000000;
 
 WebKit::WebClipboard::Buffer ConvertClipboardType(
     PP_Flash_Clipboard_Type type) {
   switch (type) {
     case PP_FLASH_CLIPBOARD_TYPE_STANDARD:
       return WebKit::WebClipboard::BufferStandard;
     case PP_FLASH_CLIPBOARD_TYPE_SELECTION:
       return WebKit::WebClipboard::BufferSelection;
     case PP_FLASH_CLIPBOARD_TYPE_DRAG:
       return WebKit::WebClipboard::BufferDrag;
     default:
       NOTREACHED();
       return WebKit::WebClipboard::BufferStandard;
   }
 }
 
+WebKit::WebClipboard::Format ConvertClipboardFormat(
+    PP_Flash_Clipboard_Format format) {
+  switch (format) {
+    case PP_FLASH_CLIPBOARD_FORMAT_PLAINTEXT:
+      return WebKit::WebClipboard::FormatPlainText;
+    case PP_FLASH_CLIPBOARD_FORMAT_HTML:
+      return WebKit::WebClipboard::FormatHTML;
+    case PP_FLASH_CLIPBOARD_FORMAT_INVALID:
+    default:
+      NOTREACHED();
+      return WebKit::WebClipboard::FormatPlainText;  // Gotta return something.
+  }
+}
+
+PP_Bool IsFormatAvailable(PP_Instance instance_id,
+                          PP_Flash_Clipboard_Type clipboard_type,
+                          PP_Flash_Clipboard_Format format) {
+  // If you don't give us an instance, we don't give you anything.
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(instance_id);
+  if (!instance)
+    return PP_FALSE;
+
+  WebKit::WebClipboard* web_clipboard = WebKit::webKitClient()->clipboard();
+  if (!web_clipboard) {
+    NOTREACHED();
+    return PP_FALSE;
+  }
+
+  return BoolToPPBool(
+      web_clipboard->isFormatAvailable(ConvertClipboardFormat(format),
+                                       ConvertClipboardType(clipboard_type)));
+}
+
 PP_Var ReadPlainText(PP_Instance instance_id,
                      PP_Flash_Clipboard_Type clipboard_type) {
   PluginInstance* instance = ResourceTracker::Get()->GetInstance(instance_id);
   if (!instance)
     return PP_MakeNull();
 
   WebKit::WebClipboard* web_clipboard = WebKit::webKitClient()->clipboard();
   if (!web_clipboard) {
     NOTREACHED();
     return PP_MakeNull();
@@ skipping 24 matching lines @@
     NOTREACHED();
     return PP_ERROR_FAILED;
   }
 
   web_clipboard->writePlainText(
       WebKit::WebCString(text_string->value()).utf16());
   return PP_OK;
 }
 
 const PPB_Flash_Clipboard ppb_flash_clipboard = {
+  &IsFormatAvailable,
   &ReadPlainText,
   &WritePlainText,
 };
 
 }  // namespace
 
 // static
 const PPB_Flash_Clipboard*
     PPB_Flash_Clipboard_Impl::GetInterface() {
   return &ppb_flash_clipboard;
 }
 
 }  // namespace ppapi
 }  // namespace webkit