src/chrome/renderer/extensions/media_galleries_custom_bindings.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/renderer/extensions/media_galleries_custom_bindings.h"
   6
   7 #include <string>
   8
   9 #include "chrome/common/extensions/extension_constants.h"
  10 #include "third_party/WebKit/public/web/WebDocument.h"
  11 #include "third_party/WebKit/public/web/WebFrame.h"
  12 #include "v8/include/v8.h"
  13 #include "webkit/common/fileapi/file_system_util.h"
  14
  15 namespace extensions {
  16
  17 namespace {
  18
  19 // FileSystemObject GetMediaFileSystem(string file_system_url): construct
  20 // a file system object from a file system url.
  21 void GetMediaFileSystemObject(const v8::FunctionCallbackInfo<v8::Value>& args) {
  22   CHECK_EQ(1, args.Length());
  23   CHECK(args[0]->IsString());
  24
  25   std::string fsid(*v8::String::Utf8Value(args[0]));
  26   CHECK(!fsid.empty());
  27
  28   blink::WebFrame* webframe = blink::WebFrame::frameForCurrentContext();
  29   const GURL origin = GURL(webframe->document().securityOrigin().toString());
  30   const std::string fs_name = fileapi::GetIsolatedFileSystemName(origin, fsid);
  31   const std::string root_url =
  32       fileapi::GetIsolatedFileSystemRootURIString(
  33           origin, fsid, extension_misc::kMediaFileSystemPathPart);
  34   args.GetReturnValue().Set(
  35       webframe->createFileSystem(blink::WebFileSystemTypeIsolated,
  36                                  blink::WebString::fromUTF8(fs_name),
  37                                  blink::WebString::fromUTF8(root_url)));
  38 }
  39
  40 }  // namespace
  41
  42 MediaGalleriesCustomBindings::MediaGalleriesCustomBindings(
  43     Dispatcher* dispatcher, ChromeV8Context* context)
  44     : ChromeV8Extension(dispatcher, context) {
  45   RouteFunction("GetMediaFileSystemObject",
  46                 base::Bind(&GetMediaFileSystemObject));
  47 }
  48
  49 }  // namespace extensions