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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/api/extension_action/page_action_handler.h"
      6 
      7 #include "base/strings/utf_string_conversions.h"
      8 #include "base/values.h"
      9 #include "chrome/common/extensions/extension.h"
     10 #include "chrome/common/extensions/extension_constants.h"
     11 #include "chrome/common/extensions/extension_file_util.h"
     12 #include "chrome/common/extensions/extension_manifest_constants.h"
     13 #include "grit/generated_resources.h"
     14 
     15 namespace keys = extension_manifest_keys;
     16 namespace errors = extension_manifest_errors;
     17 
     18 namespace extensions {
     19 
     20 PageActionHandler::PageActionHandler() {
     21 }
     22 
     23 PageActionHandler::~PageActionHandler() {
     24 }
     25 
     26 bool PageActionHandler::Parse(Extension* extension, string16* error) {
     27   scoped_ptr<ActionInfo> page_action_info;
     28   const base::DictionaryValue* page_action_value = NULL;
     29 
     30   if (extension->manifest()->HasKey(keys::kPageActions)) {
     31     const base::ListValue* list_value = NULL;
     32     if (!extension->manifest()->GetList(keys::kPageActions, &list_value)) {
     33       *error = ASCIIToUTF16(errors::kInvalidPageActionsList);
     34       return false;
     35     }
     36 
     37     size_t list_value_length = list_value->GetSize();
     38 
     39     if (list_value_length == 0u) {
     40       // A list with zero items is allowed, and is equivalent to not having
     41       // a page_actions key in the manifest.  Don't set |page_action_value|.
     42     } else if (list_value_length == 1u) {
     43       if (!list_value->GetDictionary(0, &page_action_value)) {
     44         *error = ASCIIToUTF16(errors::kInvalidPageAction);
     45         return false;
     46       }
     47     } else {  // list_value_length > 1u.
     48       *error = ASCIIToUTF16(errors::kInvalidPageActionsListSize);
     49       return false;
     50     }
     51   } else if (extension->manifest()->HasKey(keys::kPageAction)) {
     52     if (!extension->manifest()->GetDictionary(keys::kPageAction,
     53                                               &page_action_value)) {
     54       *error = ASCIIToUTF16(errors::kInvalidPageAction);
     55       return false;
     56     }
     57   }
     58 
     59   // An extension cannot have both browser and page actions.
     60   if (extension->manifest()->HasKey(keys::kBrowserAction)) {
     61     *error = ASCIIToUTF16(errors::kOneUISurfaceOnly);
     62     return false;
     63   }
     64 
     65   // If page_action_value is not NULL, then there was a valid page action.
     66   if (page_action_value) {
     67     page_action_info = ActionInfo::Load(extension, page_action_value, error);
     68     if (!page_action_info)
     69       return false;  // Failed to parse page action definition.
     70   }
     71   ActionInfo::SetPageActionInfo(extension, page_action_info.release());
     72 
     73   return true;
     74 }
     75 
     76 bool PageActionHandler::Validate(const Extension* extension,
     77                                  std::string* error,
     78                                  std::vector<InstallWarning>* warnings) const {
     79   const extensions::ActionInfo* action =
     80       extensions::ActionInfo::GetPageActionInfo(extension);
     81   if (action && !action->default_icon.empty() &&
     82       !extension_file_util::ValidateExtensionIconSet(
     83           action->default_icon,
     84           extension,
     85           IDS_EXTENSION_LOAD_ICON_FOR_PAGE_ACTION_FAILED,
     86           error)) {
     87     return false;
     88   }
     89   return true;
     90 }
     91 
     92 const std::vector<std::string> PageActionHandler::Keys() const {
     93   std::vector<std::string> keys;
     94   keys.push_back(keys::kPageAction);
     95   keys.push_back(keys::kPageActions);
     96   return keys;
     97 }
     98 
     99 }  // namespace extensions
    100