| // 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 CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_REQUEST_HANDLE_H_ |
| #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_REQUEST_HANDLE_H_ |
| |
| #include "base/compiler_specific.h" |
| #include "base/memory/weak_ptr.h" |
| #include "content/browser/download/download_resource_handler.h" |
| #include "content/common/content_export.h" |
| #include "content/public/browser/resource_request_info.h" |
| |
| namespace content { |
| class DownloadManager; |
| class WebContents; |
| |
| // A handle used by the download system for operations on the URLRequest |
| // or objects conditional on it (e.g. WebContentsImpl). |
| // This class needs to be copyable, so we can pass it across threads and not |
| // worry about lifetime or const-ness. |
| // |
| // DownloadRequestHandleInterface is defined for mocking purposes. |
| class CONTENT_EXPORT DownloadRequestHandleInterface { |
| public: |
| virtual ~DownloadRequestHandleInterface(); |
| |
| // These functions must be called on the UI thread. |
| virtual WebContents* GetWebContents() const = 0; |
| virtual DownloadManager* GetDownloadManager() const = 0; |
| |
| // Pauses or resumes the matching URL request. |
| virtual void PauseRequest() const = 0; |
| virtual void ResumeRequest() const = 0; |
| |
| // Cancels the request. |
| virtual void CancelRequest(bool user_cancel) const = 0; |
| }; |
| |
| |
| class CONTENT_EXPORT DownloadRequestHandle |
| : public DownloadRequestHandleInterface { |
| public: |
| DownloadRequestHandle(const DownloadRequestHandle& other); |
| ~DownloadRequestHandle() override; |
| |
| // Create a null DownloadRequestHandle: getters will return null, and |
| // all actions are no-ops. |
| // TODO(rdsmith): Ideally, actions would be forbidden rather than |
| // no-ops, to confirm that no non-testing code actually uses |
| // a null DownloadRequestHandle. But for now, we need the no-op |
| // behavior for unit tests. Long-term, this should be fixed by |
| // allowing mocking of ResourceDispatcherHost in unit tests. |
| DownloadRequestHandle(); |
| |
| DownloadRequestHandle(const base::WeakPtr<DownloadResourceHandler>& handler, |
| const content::ResourceRequestInfo::WebContentsGetter& |
| web_contents_getter); |
| |
| // Implement DownloadRequestHandleInterface interface. |
| WebContents* GetWebContents() const override; |
| DownloadManager* GetDownloadManager() const override; |
| void PauseRequest() const override; |
| void ResumeRequest() const override; |
| void CancelRequest(bool user_cancel) const override; |
| |
| private: |
| base::WeakPtr<DownloadResourceHandler> handler_; |
| content::ResourceRequestInfo::WebContentsGetter web_contents_getter_; |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_REQUEST_HANDLE_H_ |