ios/web/webui/shared_resources_data_source_ios.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 "ios/web/webui/shared_resources_data_source_ios.h"
   6
   7 #include "base/logging.h"
   8 #include "base/memory/ref_counted_memory.h"
   9 #include "base/strings/string_util.h"
  10 #include "grit/webui_resources_map.h"
  11 #include "ios/web/public/web_client.h"
  12 #include "net/base/mime_util.h"
  13 #include "ui/base/webui/web_ui_util.h"
  14 #include "ui/resources/grit/webui_resources.h"
  15
  16 namespace web {
  17
  18 namespace {
  19
  20 // Value duplicated from content/public/common/url_constants.h
  21 // TODO(stuartmorgan): Revisit how to share this in a more maintainable way.
  22 const char kWebUIResourcesHost[] = "resources";
  23
  24 int PathToIDR(const std::string& path) {
  25   int idr = -1;
  26   for (size_t i = 0; i < kWebuiResourcesSize; ++i) {
  27     if (path == kWebuiResources[i].name) {
  28       idr = kWebuiResources[i].value;
  29       break;
  30     }
  31   }
  32
  33   return idr;
  34 }
  35
  36 }  // namespace
  37
  38 SharedResourcesDataSourceIOS::SharedResourcesDataSourceIOS() {
  39 }
  40
  41 SharedResourcesDataSourceIOS::~SharedResourcesDataSourceIOS() {
  42 }
  43
  44 std::string SharedResourcesDataSourceIOS::GetSource() const {
  45   return kWebUIResourcesHost;
  46 }
  47
  48 void SharedResourcesDataSourceIOS::StartDataRequest(
  49     const std::string& path,
  50     const URLDataSourceIOS::GotDataCallback& callback) {
  51   int idr = PathToIDR(path);
  52   DCHECK_NE(-1, idr) << " path: " << path;
  53   scoped_refptr<base::RefCountedMemory> bytes;
  54
  55   WebClient* web_client = GetWebClient();
  56
  57   if (idr == IDR_WEBUI_CSS_TEXT_DEFAULTS) {
  58     std::vector<std::string> placeholders;
  59     placeholders.push_back(webui::GetTextDirection());  // $1
  60     placeholders.push_back(webui::GetFontFamily());  // $2
  61     placeholders.push_back(webui::GetFontSize());  // $3
  62
  63     const std::string& chrome_shared =
  64         web_client->GetDataResource(idr, ui::SCALE_FACTOR_NONE).as_string();
  65     std::string replaced =
  66         base::ReplaceStringPlaceholders(chrome_shared, placeholders, nullptr);
  67     bytes = base::RefCountedString::TakeString(&replaced);
  68   } else {
  69     bytes = web_client->GetDataResourceBytes(idr);
  70   }
  71
  72   callback.Run(bytes.get());
  73 }
  74
  75 std::string SharedResourcesDataSourceIOS::GetMimeType(
  76     const std::string& path) const {
  77   std::string mime_type;
  78   net::GetMimeTypeFromFile(base::FilePath().AppendASCII(path), &mime_type);
  79   return mime_type;
  80 }
  81
  82 }  // namespace web