| // 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. |
| |
| #ifndef CHROME_BROWSER_EXTENSIONS_CHROME_REQUIREMENTS_CHECKER_H_ |
| #define CHROME_BROWSER_EXTENSIONS_CHROME_REQUIREMENTS_CHECKER_H_ |
| |
| #include <vector> |
| |
| #include "base/callback.h" |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/weak_ptr.h" |
| #include "extensions/browser/requirements_checker.h" |
| |
| namespace content { |
| class GpuFeatureChecker; |
| } |
| |
| 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 ChromeRequirementsChecker : public RequirementsChecker { |
| public: |
| ChromeRequirementsChecker(); |
| ~ChromeRequirementsChecker() override; |
| |
| private: |
| // RequirementsChecker: |
| void Check(const scoped_refptr<const Extension>& extension, |
| const RequirementsCheckedCallback& callback) override; |
| |
| // Callbacks for the GpuFeatureChecker. |
| void SetWebGLAvailability(bool available); |
| |
| void MaybeRunCallback(); |
| |
| std::vector<std::string> errors_; |
| |
| // Every requirement that needs to be resolved asynchronously will add to |
| // this counter. When the counter is depleted, the callback will be run. |
| int pending_requirement_checks_; |
| |
| scoped_refptr<content::GpuFeatureChecker> webgl_checker_; |
| |
| RequirementsCheckedCallback callback_; |
| |
| base::WeakPtrFactory<ChromeRequirementsChecker> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ChromeRequirementsChecker); |
| }; |
| |
| } // namespace extensions |
| |
| #endif // CHROME_BROWSER_EXTENSIONS_CHROME_REQUIREMENTS_CHECKER_H_ |