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 "base/files/file_path.h"
  10 #include "base/strings/stringprintf.h"
  11 #include "chrome/common/extensions/extension_constants.h"
  12 #include "third_party/WebKit/public/web/WebDocument.h"
  13 #include "third_party/WebKit/public/web/WebFrame.h"
  14 #include "v8/include/v8.h"
  15 #include "webkit/common/fileapi/file_system_util.h"
  16
  17 namespace extensions {
  18
  19 MediaGalleriesCustomBindings::MediaGalleriesCustomBindings(
  20     Dispatcher* dispatcher, ChromeV8Context* context)
  21     : ChromeV8Extension(dispatcher, context) {
  22   RouteFunction(
  23       "GetMediaFileSystemObject",
  24       base::Bind(&MediaGalleriesCustomBindings::GetMediaFileSystemObject,
  25                  base::Unretained(this)));
  26 }
  27
  28 void MediaGalleriesCustomBindings::GetMediaFileSystemObject(
  29     const v8::FunctionCallbackInfo<v8::Value>& args) {
  30   if (args.Length() != 1) {
  31     NOTREACHED();
  32     return;
  33   }
  34   if (!args[0]->IsString()) {
  35     NOTREACHED();
  36     return;
  37   }
  38
  39   std::string fsid(*v8::String::Utf8Value(args[0]));
  40   if (fsid.empty()) {
  41     NOTREACHED();
  42     return;
  43   }
  44
  45   WebKit::WebFrame* webframe = WebKit::WebFrame::frameForCurrentContext();
  46   const GURL origin = GURL(webframe->document().securityOrigin().toString());
  47   const std::string fs_name = fileapi::GetIsolatedFileSystemName(origin, fsid);
  48   const std::string root_url =
  49       fileapi::GetIsolatedFileSystemRootURIString(
  50           origin, fsid, extension_misc::kMediaFileSystemPathPart);
  51   args.GetReturnValue().Set(
  52       webframe->createFileSystem(WebKit::WebFileSystemTypeIsolated,
  53                                  WebKit::WebString::fromUTF8(fs_name),
  54                                  WebKit::WebString::fromUTF8(root_url)));
  55 }
  56
  57 }  // namespace extensions