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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef CHROME_BROWSER_PRERENDER_PRERENDER_LINK_MANAGER_H_ |
| 6 #define CHROME_BROWSER_PRERENDER_PRERENDER_LINK_MANAGER_H_ |
| 7 #pragma once |
| 8 |
| 9 #include <map> |
| 10 #include <utility> |
| 11 |
| 12 #include "base/basictypes.h" |
| 13 #include "base/gtest_prod_util.h" |
| 14 #include "chrome/browser/profiles/profile_keyed_service.h" |
| 15 #include "googleurl/src/gurl.h" |
| 16 |
| 17 class Profile; |
| 18 |
| 19 namespace content { |
| 20 struct Referrer; |
| 21 } |
| 22 |
| 23 namespace gfx { |
| 24 class Size; |
| 25 } |
| 26 |
| 27 namespace prerender { |
| 28 |
| 29 class PrerenderManager; |
| 30 |
| 31 // PrerenderLinkManager implements the API on Link elements for all documents |
| 32 // being rendered in this chrome instance. It receives messages from the |
| 33 // renderer indicating addition, cancelation and abandonment of link elements, |
| 34 // and controls the PrerenderManager accordingly. |
| 35 class PrerenderLinkManager : public ProfileKeyedService { |
| 36 public: |
| 37 explicit PrerenderLinkManager(PrerenderManager* manager); |
| 38 virtual ~PrerenderLinkManager(); |
| 39 |
| 40 // A <link rel=prerender ...> element has been inserted into the document. |
| 41 // The |prerender_id| must be unique per |child_id|, and is typically |
| 42 // assigned by the WebPrerendererClient. |
| 43 // Returns true if the prerender was accepted by the prerender manager, |
| 44 // and false if not. In either case, the |prerender_id| is usable for |
| 45 // future OnCancelPrerender and OnAbandonPrerender calls. |
| 46 bool OnAddPrerender( |
| 47 int child_id, |
| 48 int prerender_id, |
| 49 const GURL& url, |
| 50 const content::Referrer& referrer, |
| 51 const gfx::Size& size, |
| 52 int render_view_route_id); |
| 53 |
| 54 // A <link rel=prerender ...> element has been explicitly removed from a |
| 55 // document. |
| 56 void OnCancelPrerender(int prerender_id, int child_id); |
| 57 |
| 58 // A renderer launching <link rel=prerender ...> has navigated away from the |
| 59 // launching page, the launching renderer process has crashed, or perhaps the |
| 60 // renderer process was fast-closed when the last render view in it was |
| 61 // closed. |
| 62 void OnAbandonPrerender(int prerender_id, int child_id); |
| 63 |
| 64 // If a renderer channel closes (crash, fast exit, etc...), that's effectively |
| 65 // an abandon of any prerenders launched by that child. |
| 66 void OnChannelClosing(int child_id); |
| 67 |
| 68 private: |
| 69 FRIEND_TEST_ALL_PREFIXES(PrerenderBrowserTest, PrerenderPage); |
| 70 friend class PrerenderTest; |
| 71 |
| 72 typedef std::pair<int, int> ChildAndPrerenderIdPair; |
| 73 typedef std::map<ChildAndPrerenderIdPair, GURL> IdPairToUrlMap; |
| 74 typedef std::multimap<GURL, ChildAndPrerenderIdPair> UrlToIdPairMap; |
| 75 |
| 76 void RemovePrerender(const IdPairToUrlMap::iterator& id_url_iter); |
| 77 |
| 78 bool IsEmpty() const; |
| 79 |
| 80 PrerenderManager* manager_; |
| 81 IdPairToUrlMap ids_to_url_map_; |
| 82 |
| 83 DISALLOW_COPY_AND_ASSIGN(PrerenderLinkManager); |
| 84 }; |
| 85 |
| 86 } // namespace prerender |
| 87 |
| 88 #endif // CHROME_BROWSER_PRERENDER_PRERENDER_LINK_MANAGER_H_ |
| 89 |
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