| // Copyright 2014 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_TRANSITION_REQUEST_MANAGER_H_ |
| #define CONTENT_BROWSER_TRANSITION_REQUEST_MANAGER_H_ |
| |
| #include <map> |
| #include <string> |
| #include <utility> |
| #include <vector> |
| |
| #include "base/basictypes.h" |
| #include "base/memory/ref_counted.h" |
| #include "content/common/content_export.h" |
| #include "url/gurl.h" |
| |
| template <typename T> |
| struct DefaultSingletonTraits; |
| |
| namespace net { |
| class HttpResponseHeaders; |
| } |
| class GURL; |
| |
| namespace content { |
| |
| // This struct passes data about an imminent transition between threads. |
| struct TransitionLayerData { |
| TransitionLayerData(); |
| ~TransitionLayerData(); |
| |
| std::string markup; |
| std::string css_selector; |
| scoped_refptr<net::HttpResponseHeaders> response_headers; |
| GURL request_url; |
| }; |
| |
| // TransitionRequestManager is used to handle bookkeeping for transition |
| // requests and responses. |
| // |
| // TransitionRequestManager is a singleton and should only be accessed on the IO |
| // thread. |
| // |
| class TransitionRequestManager { |
| public: |
| // Returns the singleton instance. |
| CONTENT_EXPORT static TransitionRequestManager* GetInstance(); |
| |
| // Parses out any transition-entering-stylesheet link headers from the |
| // response headers. |
| CONTENT_EXPORT static void ParseTransitionStylesheetsFromHeaders( |
| const scoped_refptr<net::HttpResponseHeaders>& headers, |
| std::vector<GURL>& entering_stylesheets, |
| const GURL& resolve_address); |
| |
| // Returns whether the RenderFrameHost specified by the given IDs currently |
| // has any pending transition request data. If so, we will have to delay the |
| // response until the embedder resumes the request. |
| bool HasPendingTransitionRequest(int render_process_id, |
| int render_frame_id, |
| const GURL& request_url, |
| TransitionLayerData* transition_data); |
| |
| // Adds pending request data for a transition navigation for the |
| // RenderFrameHost specified by the given IDs. |
| CONTENT_EXPORT void AddPendingTransitionRequestData( |
| int render_process_id, |
| int render_frame_id, |
| const std::string& allowed_destination_host_pattern, |
| const std::string& css_selector, |
| const std::string& markup); |
| |
| void ClearPendingTransitionRequestData(int render_process_id, |
| int render_frame_id); |
| |
| private: |
| class TransitionRequestData { |
| public: |
| TransitionRequestData(); |
| ~TransitionRequestData(); |
| void AddEntry(const std::string& allowed_destination_host_pattern, |
| const std::string& selector, |
| const std::string& markup); |
| bool FindEntry(const GURL& request_url, |
| TransitionLayerData* transition_data); |
| |
| private: |
| struct AllowedEntry { |
| // These strings could have originated from a compromised renderer, |
| // and should not be trusted or assumed safe. They are only used within |
| // a sandboxed iframe with scripts disabled. |
| std::string allowed_destination_host_pattern; |
| std::string css_selector; |
| std::string markup; |
| |
| AllowedEntry(const std::string& allowed_destination_host_pattern, |
| const std::string& css_selector, |
| const std::string& markup) : |
| allowed_destination_host_pattern(allowed_destination_host_pattern), |
| css_selector(css_selector), |
| markup(markup) {} |
| }; |
| std::vector<AllowedEntry> allowed_entries_; |
| }; |
| |
| friend struct DefaultSingletonTraits<TransitionRequestManager>; |
| typedef std::map<std::pair<int, int>, TransitionRequestData> |
| RenderFrameRequestDataMap; |
| |
| TransitionRequestManager(); |
| ~TransitionRequestManager(); |
| |
| // Map of (render_process_host_id, render_frame_id) pairs of all |
| // RenderFrameHosts that have pending cross-site requests and their data. |
| // Used to pass information to the CrossSiteResourceHandler without doing a |
| // round-trip between IO->UI->IO threads. |
| RenderFrameRequestDataMap pending_transition_frames_; |
| |
| DISALLOW_COPY_AND_ASSIGN(TransitionRequestManager); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_TRANSITION_REQUEST_MANAGER_H_ |