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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/offline_enabled_info.h"
      6 
      7 #include "base/memory/scoped_ptr.h"
      8 #include "base/strings/string16.h"
      9 #include "base/strings/string_util.h"
     10 #include "base/strings/utf_string_conversions.h"
     11 #include "base/values.h"
     12 #include "chrome/common/extensions/extension_manifest_constants.h"
     13 
     14 namespace keys = extension_manifest_keys;
     15 
     16 namespace extensions {
     17 
     18 OfflineEnabledInfo::OfflineEnabledInfo(bool is_offline_enabled)
     19     : offline_enabled(is_offline_enabled) {
     20 }
     21 
     22 OfflineEnabledInfo::~OfflineEnabledInfo() {
     23 }
     24 
     25 // static
     26 bool OfflineEnabledInfo::IsOfflineEnabled(const Extension* extension) {
     27   OfflineEnabledInfo* info = static_cast<OfflineEnabledInfo*>(
     28       extension->GetManifestData(keys::kOfflineEnabled));
     29   return info ? info->offline_enabled : false;
     30 }
     31 
     32 OfflineEnabledHandler::OfflineEnabledHandler() {
     33 }
     34 
     35 OfflineEnabledHandler::~OfflineEnabledHandler() {
     36 }
     37 
     38 bool OfflineEnabledHandler::Parse(Extension* extension, string16* error) {
     39   if (!extension->manifest()->HasKey(keys::kOfflineEnabled)) {
     40     // Only platform apps default to being enabled offline, and we should only
     41     // attempt parsing without a key present if it is a platform app.
     42     DCHECK(extension->is_platform_app());
     43     extension->SetManifestData(keys::kOfflineEnabled,
     44                                new OfflineEnabledInfo(true));
     45     return true;
     46   }
     47 
     48   bool offline_enabled = false;
     49 
     50   if (!extension->manifest()->GetBoolean(keys::kOfflineEnabled,
     51                                          &offline_enabled)) {
     52     *error = ASCIIToUTF16(extension_manifest_errors::kInvalidOfflineEnabled);
     53     return false;
     54   }
     55 
     56   extension->SetManifestData(keys::kOfflineEnabled,
     57                              new OfflineEnabledInfo(offline_enabled));
     58   return true;
     59 }
     60 
     61 bool OfflineEnabledHandler::AlwaysParseForType(Manifest::Type type) const {
     62   return type == Manifest::TYPE_PLATFORM_APP;
     63 }
     64 
     65 const std::vector<std::string> OfflineEnabledHandler::Keys() const {
     66   return SingleKey(keys::kOfflineEnabled);
     67 }
     68 
     69 }  // namespace extensions
     70