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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/common/extensions/features/manifest_feature.h"
#include "chrome/common/extensions/manifest.h"
namespace extensions {
ManifestFeature::ManifestFeature() {
}
ManifestFeature::~ManifestFeature() {
}
Feature::Availability ManifestFeature::IsAvailableToContext(
const Extension* extension,
Feature::Context context,
const GURL& url,
Feature::Platform platform) const {
Availability availability = SimpleFeature::IsAvailableToContext(extension,
context,
url,
platform);
if (!availability.is_available())
return availability;
// We know we can skip manifest()->GetKey() here because we just did the same
// validation it would do above.
if (extension && !extension->manifest()->value()->HasKey(name()))
return CreateAvailability(NOT_PRESENT, extension->GetType());
return CreateAvailability(IS_AVAILABLE);
}
std::string ManifestFeature::Parse(const DictionaryValue* value) {
std::string error = SimpleFeature::Parse(value);
if (!error.empty())
return error;
if (extension_types()->empty()) {
return name() + ": Manifest features must specify at least one " +
"value for extension_types.";
}
if (!GetContexts()->empty())
return name() + ": Manifest features do not support contexts.";
return "";
}
} // namespace
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