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      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/common/net/net_resource_provider.h"
      6 
      7 #include <string>
      8 
      9 #include "base/i18n/rtl.h"
     10 #include "base/strings/string_piece.h"
     11 #include "base/values.h"
     12 #include "grit/chromium_strings.h"
     13 #include "grit/generated_resources.h"
     14 #include "grit/net_resources.h"
     15 #include "ui/base/l10n/l10n_util.h"
     16 #include "ui/base/layout.h"
     17 #include "ui/base/resource/resource_bundle.h"
     18 #include "ui/base/webui/jstemplate_builder.h"
     19 
     20 namespace {
     21 
     22 // The net module doesn't have access to this HTML or the strings that need to
     23 // be localized.  The Chrome locale will never change while we're running, so
     24 // it's safe to have a static string that we always return a pointer into.
     25 // This allows us to have the ResourceProvider return a pointer into the actual
     26 // resource (via a StringPiece), instead of always copying resources.
     27 struct LazyDirectoryListerCacher {
     28   LazyDirectoryListerCacher() {
     29     base::DictionaryValue value;
     30     value.SetString("header",
     31                     l10n_util::GetStringUTF16(IDS_DIRECTORY_LISTING_HEADER));
     32     value.SetString("parentDirText",
     33                     l10n_util::GetStringUTF16(IDS_DIRECTORY_LISTING_PARENT));
     34     value.SetString("headerName",
     35                     l10n_util::GetStringUTF16(IDS_DIRECTORY_LISTING_NAME));
     36     value.SetString("headerSize",
     37                     l10n_util::GetStringUTF16(IDS_DIRECTORY_LISTING_SIZE));
     38     value.SetString("headerDateModified",
     39         l10n_util::GetStringUTF16(IDS_DIRECTORY_LISTING_DATE_MODIFIED));
     40     value.SetString("listingParsingErrorBoxText",
     41         l10n_util::GetStringFUTF16(IDS_DIRECTORY_LISTING_PARSING_ERROR_BOX_TEXT,
     42             l10n_util::GetStringUTF16(IDS_PRODUCT_NAME)));
     43     value.SetString("textdirection", base::i18n::IsRTL() ? "rtl" : "ltr");
     44     html_data = webui::GetI18nTemplateHtml(
     45         ResourceBundle::GetSharedInstance().GetRawDataResource(
     46             IDR_DIR_HEADER_HTML),
     47         &value);
     48   }
     49 
     50   std::string html_data;
     51 };
     52 
     53 }  // namespace
     54 
     55 namespace chrome_common_net {
     56 
     57 base::StringPiece NetResourceProvider(int key) {
     58   CR_DEFINE_STATIC_LOCAL(LazyDirectoryListerCacher, lazy_dir_lister, ());
     59 
     60   if (IDR_DIR_HEADER_HTML == key)
     61     return base::StringPiece(lazy_dir_lister.html_data);
     62 
     63   return ResourceBundle::GetSharedInstance().GetRawDataResource(key);
     64 }
     65 
     66 }  // namespace chrome_common_net
     67