chrome/renderer/resource_bundle_source_map.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/resource_bundle_source_map.h"
   6
   7 #include "ui/base/resource/resource_bundle.h"
   8
   9 ResourceBundleSourceMap::ResourceBundleSourceMap(
  10     const ui::ResourceBundle* resource_bundle)
  11     : resource_bundle_(resource_bundle) {
  12 }
  13
  14 ResourceBundleSourceMap::~ResourceBundleSourceMap() {
  15 }
  16
  17 void ResourceBundleSourceMap::RegisterSource(const std::string& name,
  18                                              int resource_id) {
  19   resource_id_map_[name] = resource_id;
  20 }
  21
  22 v8::Handle<v8::Value> ResourceBundleSourceMap::GetSource(
  23     v8::Isolate* isolate,
  24     const std::string& name) {
  25   if (!Contains(name))
  26     return v8::Undefined(isolate);
  27   int resource_id = resource_id_map_[name];
  28   return ConvertString(isolate,
  29                        resource_bundle_->GetRawDataResource(resource_id));
  30 }
  31
  32 bool ResourceBundleSourceMap::Contains(const std::string& name) {
  33   return !!resource_id_map_.count(name);
  34 }
  35
  36 v8::Handle<v8::String> ResourceBundleSourceMap::ConvertString(
  37     v8::Isolate* isolate,
  38     const base::StringPiece& string) {
  39   // v8 takes ownership of the StaticV8ExternalAsciiStringResource (see
  40   // v8::String::NewExternal()).
  41   return v8::String::NewExternal(
  42       isolate, new StaticV8ExternalAsciiStringResource(string));
  43 }