chrome/common/extensions/api/extension_action/script_badge_handler.cc

   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/extensions/api/extension_action/script_badge_handler.h"
   6
   7 #include "base/memory/scoped_ptr.h"
   8 #include "base/strings/utf_string_conversions.h"
   9 #include "base/values.h"
  10 #include "chrome/common/extensions/extension_constants.h"
  11 #include "chrome/common/extensions/manifest_handlers/icons_handler.h"
  12 #include "extensions/common/extension.h"
  13 #include "extensions/common/feature_switch.h"
  14 #include "extensions/common/install_warning.h"
  15 #include "extensions/common/manifest.h"
  16 #include "extensions/common/manifest_constants.h"
  17
  18 namespace extensions {
  19
  20 namespace errors = manifest_errors;
  21 namespace keys = manifest_keys;
  22
  23 ScriptBadgeHandler::ScriptBadgeHandler() {
  24 }
  25
  26 ScriptBadgeHandler::~ScriptBadgeHandler() {
  27 }
  28
  29 const std::vector<std::string> ScriptBadgeHandler::PrerequisiteKeys() const {
  30   return SingleKey(keys::kIcons);
  31 }
  32
  33 bool ScriptBadgeHandler::Parse(Extension* extension, base::string16* error) {
  34   scoped_ptr<ActionInfo> action_info(new ActionInfo);
  35
  36   // Provide a default script badge if one isn't declared in the manifest.
  37   if (!extension->manifest()->HasKey(keys::kScriptBadge)) {
  38     SetActionInfoDefaults(extension, action_info.get());
  39     ActionInfo::SetScriptBadgeInfo(extension, action_info.release());
  40     return true;
  41   }
  42
  43   // So as to not confuse developers if they specify a script badge section
  44   // in the manifest, show a warning if the script badge declaration isn't
  45   // going to have any effect.
  46   if (!FeatureSwitch::script_badges()->IsEnabled()) {
  47     extension->AddInstallWarning(
  48         InstallWarning(errors::kScriptBadgeRequiresFlag, keys::kScriptBadge));
  49   }
  50
  51   const base::DictionaryValue* dict = NULL;
  52   if (!extension->manifest()->GetDictionary(keys::kScriptBadge, &dict)) {
  53     *error = base::ASCIIToUTF16(errors::kInvalidScriptBadge);
  54     return false;
  55   }
  56
  57   action_info = ActionInfo::Load(extension, dict, error);
  58
  59   if (!action_info.get())
  60     return false;  // Failed to parse script badge definition.
  61
  62   // Script badges always use their extension's title and icon so users can rely
  63   // on the visual appearance to know which extension is running.  This isn't
  64   // bulletproof since an malicious extension could use a different 16x16 icon
  65   // that matches the icon of a trusted extension, and users wouldn't be warned
  66   // during installation.
  67
  68   if (!action_info->default_title.empty()) {
  69     extension->AddInstallWarning(
  70         InstallWarning(errors::kScriptBadgeTitleIgnored,
  71                        keys::kScriptBadge,
  72                        keys::kPageActionDefaultTitle));
  73   }
  74
  75   if (!action_info->default_icon.empty()) {
  76     extension->AddInstallWarning(
  77         InstallWarning(errors::kScriptBadgeIconIgnored,
  78                        keys::kScriptBadge,
  79                        keys::kPageActionDefaultIcon));
  80   }
  81
  82   SetActionInfoDefaults(extension, action_info.get());
  83   ActionInfo::SetScriptBadgeInfo(extension, action_info.release());
  84   return true;
  85 }
  86
  87 bool ScriptBadgeHandler::AlwaysParseForType(Manifest::Type type) const {
  88   return type == Manifest::TYPE_EXTENSION;
  89 }
  90
  91 void ScriptBadgeHandler::SetActionInfoDefaults(const Extension* extension,
  92                                                ActionInfo* info) {
  93   info->default_title = extension->name();
  94   info->default_icon.Clear();
  95   for (size_t i = 0; i < extension_misc::kNumScriptBadgeIconSizes; ++i) {
  96     std::string path = IconsInfo::GetIcons(extension).Get(
  97         extension_misc::kScriptBadgeIconSizes[i],
  98         ExtensionIconSet::MATCH_BIGGER);
  99     if (!path.empty()) {
 100       info->default_icon.Add(
 101           extension_misc::kScriptBadgeIconSizes[i], path);
 102     }
 103   }
 104 }
 105
 106 const std::vector<std::string> ScriptBadgeHandler::Keys() const {
 107   return SingleKey(keys::kScriptBadge);
 108 }
 109
 110 }  // namespace extensions