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// Copyright 2015 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.
#ifndef CHROME_BROWSER_EXTENSIONS_REQUIREMENTS_CHECKER_H_
#define CHROME_BROWSER_EXTENSIONS_REQUIREMENTS_CHECKER_H_
#include <vector>
#include "base/callback.h"
#include "base/memory/ref_counted.h"
namespace extensions {
class Extension;
// Validates the 'requirements' extension manifest field. This is an
// asynchronous process that involves several threads, but the public interface
// of this class (including constructor and destructor) must only be used on
// the UI thread.
class RequirementsChecker {
public:
virtual ~RequirementsChecker() {}
using RequirementsCheckedCallback =
base::Callback<void(const std::vector<std::string>& /* requirements */)>;
// The vector passed to the callback are any localized errors describing
// requirement violations. If this vector is non-empty, requirements checking
// failed. This should only be called once. |callback| will always be invoked
// asynchronously on the UI thread. |callback| will only be called once, and
// will be reset after called.
virtual void Check(const scoped_refptr<const Extension>& extension,
const RequirementsCheckedCallback& callback) = 0;
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_REQUIREMENTS_CHECKER_H_
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