| /* |
| * Copyright (C) 2012 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef WebPrerenderingSupport_h |
| #define WebPrerenderingSupport_h |
| |
| #include "WebCommon.h" |
| |
| namespace blink { |
| |
| class WebPrerender; |
| |
| class WebPrerenderingSupport { |
| public: |
| BLINK_PLATFORM_EXPORT static void initialize(WebPrerenderingSupport*); |
| BLINK_PLATFORM_EXPORT static void shutdown(); |
| BLINK_PLATFORM_EXPORT static WebPrerenderingSupport* current(); |
| |
| // A prerender link element is added when it is inserted into a document. |
| virtual void add(const WebPrerender&) = 0; |
| |
| // A prerender is canceled when it is removed from a document. |
| virtual void cancel(const WebPrerender&) = 0; |
| |
| // A prerender is abandoned when it's navigated away from or suspended in the page cache. This |
| // is a weaker signal than cancel(), since the launcher hasn't indicated that the prerender isn't |
| // wanted, and we may end up using it after, for instance, a short redirect chain. |
| virtual void abandon(const WebPrerender&) = 0; |
| |
| protected: |
| WebPrerenderingSupport() { } |
| virtual ~WebPrerenderingSupport() { } |
| |
| private: |
| static WebPrerenderingSupport* s_platform; |
| }; |
| |
| } // namespace blink |
| |
| #endif // WebPrerenderingSupport_h |