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| 1 /* | 1 /* |
| 2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
| 6 * met: | 6 * met: |
| 7 * | 7 * |
| 8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
| 10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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| 38 #include "wtf/text/AtomicString.h" | 38 #include "wtf/text/AtomicString.h" |
| 39 #include <memory> | 39 #include <memory> |
| 40 | 40 |
| 41 namespace blink { | 41 namespace blink { |
| 42 | 42 |
| 43 class BrowserControls; | 43 class BrowserControls; |
| 44 class ConsoleMessageStorage; | 44 class ConsoleMessageStorage; |
| 45 class EventHandlerRegistry; | 45 class EventHandlerRegistry; |
| 46 class OverscrollController; | 46 class OverscrollController; |
| 47 class Page; | 47 class Page; |
| 48 struct PageScaleConstraints; | |
| 49 class PageScaleConstraintsSet; | 48 class PageScaleConstraintsSet; |
| 50 class TopDocumentRootScrollerController; | 49 class TopDocumentRootScrollerController; |
| 51 class VisualViewport; | 50 class VisualViewport; |
| 52 | 51 |
| 53 // FrameHost is the set of global data shared between multiple frames | 52 // FrameHost is the set of global data shared between multiple frames |
| 54 // and is provided by the embedder to each frame when created. | 53 // and is provided by the embedder to each frame when created. |
| 55 // FrameHost currently corresponds to the Page object in core/page | 54 // FrameHost currently corresponds to the Page object in core/page |
| 56 // however the concept of a Page is moving up out of Blink. | 55 // however the concept of a Page is moving up out of Blink. |
| 57 // In an out-of-process iframe world, a single Page may have | 56 // In an out-of-process iframe world, a single Page may have |
| 58 // multiple frames in different process, thus Page becomes a | 57 // multiple frames in different process, thus Page becomes a |
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| 98 // recursive frameset pages can quickly bring the program to its knees | 97 // recursive frameset pages can quickly bring the program to its knees |
| 99 // with exponential growth in the number of frames. | 98 // with exponential growth in the number of frames. |
| 100 static const int maxNumberOfFrames = 1000; | 99 static const int maxNumberOfFrames = 1000; |
| 101 void incrementSubframeCount() { ++m_subframeCount; } | 100 void incrementSubframeCount() { ++m_subframeCount; } |
| 102 void decrementSubframeCount() { | 101 void decrementSubframeCount() { |
| 103 ASSERT(m_subframeCount); | 102 ASSERT(m_subframeCount); |
| 104 --m_subframeCount; | 103 --m_subframeCount; |
| 105 } | 104 } |
| 106 int subframeCount() const; | 105 int subframeCount() const; |
| 107 | 106 |
| 108 void setDefaultPageScaleLimits(float minScale, float maxScale); | |
| 109 void setUserAgentPageScaleConstraints( | |
| 110 const PageScaleConstraints& newConstraints); | |
| 111 | |
| 112 private: | 107 private: |
| 113 explicit FrameHost(Page&); | 108 explicit FrameHost(Page&); |
| 114 | 109 |
| 115 const Member<Page> m_page; | 110 const Member<Page> m_page; |
| 116 const Member<BrowserControls> m_browserControls; | 111 const Member<BrowserControls> m_browserControls; |
| 117 const Member<VisualViewport> m_visualViewport; | 112 const Member<VisualViewport> m_visualViewport; |
| 118 const Member<OverscrollController> m_overscrollController; | 113 const Member<OverscrollController> m_overscrollController; |
| 119 const Member<EventHandlerRegistry> m_eventHandlerRegistry; | 114 const Member<EventHandlerRegistry> m_eventHandlerRegistry; |
| 120 const Member<ConsoleMessageStorage> m_consoleMessageStorage; | 115 const Member<ConsoleMessageStorage> m_consoleMessageStorage; |
| 121 const Member<TopDocumentRootScrollerController> | 116 const Member<TopDocumentRootScrollerController> |
| 122 m_globalRootScrollerController; | 117 m_globalRootScrollerController; |
| 123 | 118 |
| 124 AtomicString m_overrideEncoding; | 119 AtomicString m_overrideEncoding; |
| 125 int m_subframeCount; | 120 int m_subframeCount; |
| 126 }; | 121 }; |
| 127 | 122 |
| 128 } // namespace blink | 123 } // namespace blink |
| 129 | 124 |
| 130 #endif // FrameHost_h | 125 #endif // FrameHost_h |
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