src/extensions/common/manifest_handlers/icons_handler.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/common/manifest_handlers/icons_handler.h"
   6
   7 #include "base/file_util.h"
   8 #include "base/lazy_instance.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/strings/string_number_conversions.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "base/values.h"
  13 #include "extensions/common/constants.h"
  14 #include "extensions/common/extension.h"
  15 #include "extensions/common/file_util.h"
  16 #include "extensions/common/manifest_constants.h"
  17 #include "extensions/common/manifest_handler_helpers.h"
  18 #include "grit/extensions_strings.h"
  19 #include "ui/gfx/size.h"
  20
  21 namespace extensions {
  22
  23 namespace keys = manifest_keys;
  24
  25 static base::LazyInstance<ExtensionIconSet> g_empty_icon_set =
  26     LAZY_INSTANCE_INITIALIZER;
  27
  28 // static
  29 const ExtensionIconSet& IconsInfo::GetIcons(const Extension* extension) {
  30   IconsInfo* info = static_cast<IconsInfo*>(
  31       extension->GetManifestData(keys::kIcons));
  32   return info ? info->icons : g_empty_icon_set.Get();
  33 }
  34
  35 // static
  36 ExtensionResource IconsInfo::GetIconResource(
  37     const Extension* extension,
  38     int size,
  39     ExtensionIconSet::MatchType match_type) {
  40   std::string path = GetIcons(extension).Get(size, match_type);
  41   return path.empty() ? ExtensionResource() : extension->GetResource(path);
  42 }
  43
  44 // static
  45 GURL IconsInfo::GetIconURL(const Extension* extension,
  46                            int size,
  47                            ExtensionIconSet::MatchType match_type) {
  48   std::string path = GetIcons(extension).Get(size, match_type);
  49   return path.empty() ? GURL() : extension->GetResourceURL(path);
  50 }
  51
  52 IconsHandler::IconsHandler() {
  53 }
  54
  55 IconsHandler::~IconsHandler() {
  56 }
  57
  58 bool IconsHandler::Parse(Extension* extension, base::string16* error) {
  59   scoped_ptr<IconsInfo> icons_info(new IconsInfo);
  60   const base::DictionaryValue* icons_dict = NULL;
  61   if (!extension->manifest()->GetDictionary(keys::kIcons, &icons_dict)) {
  62     *error = base::ASCIIToUTF16(manifest_errors::kInvalidIcons);
  63     return false;
  64   }
  65
  66   if (!manifest_handler_helpers::LoadIconsFromDictionary(
  67           icons_dict,
  68           extension_misc::kExtensionIconSizes,
  69           extension_misc::kNumExtensionIconSizes,
  70           &icons_info->icons,
  71           error)) {
  72     return false;
  73   }
  74
  75   extension->SetManifestData(keys::kIcons, icons_info.release());
  76   return true;
  77 }
  78
  79 bool IconsHandler::Validate(const Extension* extension,
  80                             std::string* error,
  81                             std::vector<InstallWarning>* warnings) const {
  82   return file_util::ValidateExtensionIconSet(IconsInfo::GetIcons(extension),
  83                                              extension,
  84                                              IDS_EXTENSION_LOAD_ICON_FAILED,
  85                                              error);
  86 }
  87
  88 const std::vector<std::string> IconsHandler::Keys() const {
  89   return SingleKey(keys::kIcons);
  90 }
  91
  92 }  // namespace extensions