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/features/manifest_feature.h" 6 7 #include "extensions/common/manifest.h" 8 9 namespace extensions { 10 11 ManifestFeature::ManifestFeature() { 12 } 13 14 ManifestFeature::~ManifestFeature() { 15 } 16 17 Feature::Availability ManifestFeature::IsAvailableToContext( 18 const Extension* extension, 19 Feature::Context context, 20 const GURL& url, 21 Feature::Platform platform) const { 22 Availability availability = SimpleFeature::IsAvailableToContext(extension, 23 context, 24 url, 25 platform); 26 if (!availability.is_available()) 27 return availability; 28 29 // We know we can skip manifest()->GetKey() here because we just did the same 30 // validation it would do above. 31 if (extension && !extension->manifest()->value()->HasKey(name())) 32 return CreateAvailability(NOT_PRESENT, extension->GetType()); 33 34 return CreateAvailability(IS_AVAILABLE); 35 } 36 37 std::string ManifestFeature::Parse(const base::DictionaryValue* value) { 38 std::string error = SimpleFeature::Parse(value); 39 if (!error.empty()) 40 return error; 41 42 if (extension_types()->empty()) { 43 return name() + ": Manifest features must specify at least one " + 44 "value for extension_types."; 45 } 46 47 if (!GetContexts()->empty()) 48 return name() + ": Manifest features do not support contexts."; 49 50 return std::string(); 51 } 52 53 } // namespace extensions 54
