| // 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/browser/extensions/chrome_requirements_checker.h" |
| |
| #include "base/bind.h" |
| #include "build/build_config.h" |
| #include "chrome/grit/generated_resources.h" |
| #include "content/public/browser/browser_thread.h" |
| #include "content/public/browser/gpu_feature_checker.h" |
| #include "extensions/common/extension.h" |
| #include "extensions/common/manifest.h" |
| #include "extensions/common/manifest_handlers/requirements_info.h" |
| #include "gpu/config/gpu_feature_type.h" |
| #include "ui/base/l10n/l10n_util.h" |
| |
| namespace extensions { |
| |
| ChromeRequirementsChecker::ChromeRequirementsChecker() |
| : pending_requirement_checks_(0), weak_ptr_factory_(this) { |
| } |
| |
| ChromeRequirementsChecker::~ChromeRequirementsChecker() { |
| } |
| |
| void ChromeRequirementsChecker::Check( |
| const scoped_refptr<const Extension>& extension, |
| const RequirementsCheckedCallback& callback) { |
| DCHECK_CURRENTLY_ON(content::BrowserThread::UI); |
| |
| callback_ = callback; |
| const RequirementsInfo& requirements = |
| RequirementsInfo::GetRequirements(extension.get()); |
| |
| if (requirements.npapi) { |
| #if defined(OS_POSIX) && !defined(OS_MACOSX) |
| errors_.push_back( |
| l10n_util::GetStringUTF8(IDS_EXTENSION_NPAPI_NOT_SUPPORTED)); |
| #endif |
| } |
| |
| if (requirements.window_shape) { |
| #if !defined(USE_AURA) |
| errors_.push_back( |
| l10n_util::GetStringUTF8(IDS_EXTENSION_WINDOW_SHAPE_NOT_SUPPORTED)); |
| #endif |
| } |
| |
| if (requirements.webgl) { |
| ++pending_requirement_checks_; |
| webgl_checker_ = content::GpuFeatureChecker::Create( |
| gpu::GPU_FEATURE_TYPE_ACCELERATED_WEBGL, |
| base::Bind(&ChromeRequirementsChecker::SetWebGLAvailability, |
| weak_ptr_factory_.GetWeakPtr())); |
| } |
| |
| if (pending_requirement_checks_ == 0) { |
| content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE, |
| base::Bind(callback_, errors_)); |
| // Reset the callback so any ref-counted bound parameters will get released. |
| callback_.Reset(); |
| return; |
| } |
| // Running the GPU checkers down here removes any race condition that arises |
| // from the use of pending_requirement_checks_. |
| if (webgl_checker_.get()) |
| webgl_checker_->CheckGpuFeatureAvailability(); |
| } |
| |
| void ChromeRequirementsChecker::SetWebGLAvailability(bool available) { |
| if (!available) { |
| errors_.push_back( |
| l10n_util::GetStringUTF8(IDS_EXTENSION_WEBGL_NOT_SUPPORTED)); |
| } |
| MaybeRunCallback(); |
| } |
| |
| void ChromeRequirementsChecker::MaybeRunCallback() { |
| if (--pending_requirement_checks_ == 0) { |
| content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE, |
| base::Bind(callback_, errors_)); |
| // Reset the callback so any ref-counted bound parameters will get released. |
| callback_.Reset(); |
| errors_.clear(); |
| } |
| } |
| |
| } // namespace extensions |