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/WebDOMFileSystem.h"
  11 #include "third_party/WebKit/public/web/WebDocument.h"
  12 #include "third_party/WebKit/public/web/WebFrame.h"
  13 #include "v8/include/v8.h"
  14 #include "webkit/common/fileapi/file_system_util.h"
  15
  16 namespace extensions {
  17
  18 namespace {
  19
  20 // FileSystemObject GetMediaFileSystem(string file_system_url): construct
  21 // a file system object from a file system url.
  22 void GetMediaFileSystemObject(const v8::FunctionCallbackInfo<v8::Value>& args) {
  23   CHECK_EQ(1, args.Length());
  24   CHECK(args[0]->IsString());
  25
  26   std::string fs_mount(*v8::String::Utf8Value(args[0]));
  27   CHECK(!fs_mount.empty());
  28
  29   blink::WebFrame* webframe = blink::WebFrame::frameForCurrentContext();
  30   const GURL origin = GURL(webframe->document().securityOrigin().toString());
  31   std::string fs_name =
  32       fileapi::GetFileSystemName(origin, fileapi::kFileSystemTypeExternal);
  33   fs_name.append("_");
  34   fs_name.append(fs_mount);
  35   const GURL root_url(
  36       fileapi::GetExternalFileSystemRootURIString(origin, fs_mount));
  37   args.GetReturnValue().Set(
  38       blink::WebDOMFileSystem::create(webframe,
  39                                       blink::WebFileSystemTypeExternal,
  40                                       blink::WebString::fromUTF8(fs_name),
  41                                       root_url).toV8Value());
  42 }
  43
  44 }  // namespace
  45
  46 MediaGalleriesCustomBindings::MediaGalleriesCustomBindings(
  47     Dispatcher* dispatcher, ChromeV8Context* context)
  48     : ChromeV8Extension(dispatcher, context) {
  49   RouteFunction("GetMediaFileSystemObject",
  50                 base::Bind(&GetMediaFileSystemObject));
  51 }
  52
  53 }  // namespace extensions