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      1 // Copyright (c) 2013 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/extensions/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 "chrome/common/extensions/extension.h"
     14 #include "chrome/common/extensions/extension_file_util.h"
     15 #include "chrome/common/extensions/extension_manifest_constants.h"
     16 #include "chrome/common/extensions/manifest_handler_helpers.h"
     17 #include "grit/generated_resources.h"
     18 #include "grit/theme_resources.h"
     19 #include "third_party/skia/include/core/SkBitmap.h"
     20 #include "ui/base/resource/resource_bundle.h"
     21 #include "ui/gfx/size.h"
     22 
     23 namespace keys = extension_manifest_keys;
     24 
     25 namespace extensions {
     26 
     27 static base::LazyInstance<ExtensionIconSet> g_empty_icon_set =
     28     LAZY_INSTANCE_INITIALIZER;
     29 
     30 const int IconsInfo::kPageActionIconMaxSize = 19;
     31 const int IconsInfo::kBrowserActionIconMaxSize = 19;
     32 
     33 // static
     34 const ExtensionIconSet& IconsInfo::GetIcons(const Extension* extension) {
     35   IconsInfo* info = static_cast<IconsInfo*>(
     36       extension->GetManifestData(keys::kIcons));
     37   return info ? info->icons : g_empty_icon_set.Get();
     38 }
     39 
     40 // static
     41 const gfx::ImageSkia& IconsInfo::GetDefaultAppIcon() {
     42   return *ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
     43       IDR_APP_DEFAULT_ICON);
     44 }
     45 
     46 // static
     47 const gfx::ImageSkia& IconsInfo::GetDefaultExtensionIcon() {
     48   return *ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
     49       IDR_EXTENSION_DEFAULT_ICON);
     50 }
     51 
     52 // static
     53 ExtensionResource IconsInfo::GetIconResource(
     54     const Extension* extension,
     55     int size,
     56     ExtensionIconSet::MatchType match_type) {
     57   std::string path = GetIcons(extension).Get(size, match_type);
     58   return path.empty() ? ExtensionResource() : extension->GetResource(path);
     59 }
     60 
     61 // static
     62 GURL IconsInfo::GetIconURL(const Extension* extension,
     63                            int size,
     64                            ExtensionIconSet::MatchType match_type) {
     65   std::string path = GetIcons(extension).Get(size, match_type);
     66   return path.empty() ? GURL() : extension->GetResourceURL(path);
     67 }
     68 
     69 IconsHandler::IconsHandler() {
     70 }
     71 
     72 IconsHandler::~IconsHandler() {
     73 }
     74 
     75 bool IconsHandler::Parse(Extension* extension, string16* error) {
     76   scoped_ptr<IconsInfo> icons_info(new IconsInfo);
     77   const base::DictionaryValue* icons_dict = NULL;
     78   if (!extension->manifest()->GetDictionary(keys::kIcons, &icons_dict)) {
     79     *error = ASCIIToUTF16(extension_manifest_errors::kInvalidIcons);
     80     return false;
     81   }
     82 
     83   if (!manifest_handler_helpers::LoadIconsFromDictionary(
     84           icons_dict,
     85           extension_misc::kExtensionIconSizes,
     86           extension_misc::kNumExtensionIconSizes,
     87           &icons_info->icons,
     88           error)) {
     89     return false;
     90   }
     91 
     92   extension->SetManifestData(keys::kIcons, icons_info.release());
     93   return true;
     94 }
     95 
     96 bool IconsHandler::Validate(const Extension* extension,
     97                             std::string* error,
     98                             std::vector<InstallWarning>* warnings) const {
     99   return extension_file_util::ValidateExtensionIconSet(
    100       IconsInfo::GetIcons(extension),
    101       extension,
    102       IDS_EXTENSION_LOAD_ICON_FAILED,
    103       error);
    104 }
    105 
    106 const std::vector<std::string> IconsHandler::Keys() const {
    107   return SingleKey(keys::kIcons);
    108 }
    109 
    110 }  // namespace extensions
    111