extensions/renderer/resource_bundle_source_map.cc

   1 // Copyright 2014 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 "extensions/renderer/resource_bundle_source_map.h"
   6
   7 #include "ui/base/resource/resource_bundle.h"
   8
   9 namespace extensions {
  10
  11 ResourceBundleSourceMap::ResourceBundleSourceMap(
  12     const ui::ResourceBundle* resource_bundle)
  13     : resource_bundle_(resource_bundle) {
  14 }
  15
  16 ResourceBundleSourceMap::~ResourceBundleSourceMap() {
  17 }
  18
  19 void ResourceBundleSourceMap::RegisterSource(const std::string& name,
  20                                              int resource_id) {
  21   resource_id_map_[name] = resource_id;
  22 }
  23
  24 v8::Handle<v8::Value> ResourceBundleSourceMap::GetSource(
  25     v8::Isolate* isolate,
  26     const std::string& name) {
  27   if (!Contains(name))
  28     return v8::Undefined(isolate);
  29   int resource_id = resource_id_map_[name];
  30   return ConvertString(isolate,
  31                        resource_bundle_->GetRawDataResource(resource_id));
  32 }
  33
  34 bool ResourceBundleSourceMap::Contains(const std::string& name) {
  35   return !!resource_id_map_.count(name);
  36 }
  37
  38 v8::Handle<v8::String> ResourceBundleSourceMap::ConvertString(
  39     v8::Isolate* isolate,
  40     const base::StringPiece& string) {
  41   // v8 takes ownership of the StaticV8ExternalOneByteStringResource (see
  42   // v8::String::NewExternal()).
  43   return v8::String::NewExternal(
  44       isolate, new StaticV8ExternalOneByteStringResource(string));
  45 }
  46
  47 }  // namespace extensions