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1 /* | 1 /* |
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
3 * (C) 1999 Antti Koivisto (koivisto@kde.org) | 3 * (C) 1999 Antti Koivisto (koivisto@kde.org) |
4 * (C) 2000 Simon Hausmann (hausmann@kde.org) | 4 * (C) 2000 Simon Hausmann (hausmann@kde.org) |
5 * (C) 2001 Dirk Mueller (mueller@kde.org) | 5 * (C) 2001 Dirk Mueller (mueller@kde.org) |
6 * Copyright (C) 2004, 2006, 2008, 2009 Apple Inc. All rights reserved. | 6 * Copyright (C) 2004, 2006, 2008, 2009 Apple Inc. All rights reserved. |
7 * | 7 * |
8 * This library is free software; you can redistribute it and/or | 8 * This library is free software; you can redistribute it and/or |
9 * modify it under the terms of the GNU Library General Public | 9 * modify it under the terms of the GNU Library General Public |
10 * License as published by the Free Software Foundation; either | 10 * License as published by the Free Software Foundation; either |
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37 #include "Page.h" | 37 #include "Page.h" |
38 #include "RenderPart.h" | 38 #include "RenderPart.h" |
39 #include "ScriptController.h" | 39 #include "ScriptController.h" |
40 #include "ScriptEventListener.h" | 40 #include "ScriptEventListener.h" |
41 #include "Settings.h" | 41 #include "Settings.h" |
42 | 42 |
43 namespace WebCore { | 43 namespace WebCore { |
44 | 44 |
45 using namespace HTMLNames; | 45 using namespace HTMLNames; |
46 | 46 |
| 47 // Helper to check if the Frame's document contains elements that can instantiat
e plugins. |
| 48 // Does a recursive check for nested Frames too. |
| 49 static bool hasPluginElements(Frame* frame) |
| 50 { |
| 51 if (!frame) |
| 52 return false; |
| 53 |
| 54 // Search for a plugin element in this document. |
| 55 Document* document = frame->document(); |
| 56 for (Node* node = document->firstChild(); node; node = node->traverseNextNod
e(document)) { |
| 57 if (!node->isElementNode()) |
| 58 continue; |
| 59 |
| 60 Element* element = static_cast<Element*>(node); |
| 61 if (element->hasLocalName(embedTag) || element->hasLocalName(objectTag)) |
| 62 return true; |
| 63 } |
| 64 |
| 65 // Do the same for the nested frames. |
| 66 for (Frame* child = frame->tree()->firstChild(); child; child = child->tree(
)->nextSibling()) { |
| 67 if (hasPluginElements(child)) |
| 68 return true; |
| 69 } |
| 70 |
| 71 return false; |
| 72 } |
| 73 |
47 HTMLFrameElementBase::HTMLFrameElementBase(const QualifiedName& tagName, Documen
t* document) | 74 HTMLFrameElementBase::HTMLFrameElementBase(const QualifiedName& tagName, Documen
t* document) |
48 : HTMLFrameOwnerElement(tagName, document) | 75 : HTMLFrameOwnerElement(tagName, document) |
49 , m_scrolling(ScrollbarAuto) | 76 , m_scrolling(ScrollbarAuto) |
50 , m_marginWidth(-1) | 77 , m_marginWidth(-1) |
51 , m_marginHeight(-1) | 78 , m_marginHeight(-1) |
52 , m_checkInDocumentTimer(this, &HTMLFrameElementBase::checkInDocumentTimerFi
red) | 79 , m_checkInDocumentTimer(this, &HTMLFrameElementBase::checkInDocumentTimerFi
red) |
53 , m_viewSource(false) | 80 , m_viewSource(false) |
54 , m_remainsAliveOnRemovalFromTree(false) | 81 , m_remainsAliveOnRemovalFromTree(false) |
55 { | 82 { |
56 } | 83 } |
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244 } | 271 } |
245 | 272 |
246 int HTMLFrameElementBase::height() | 273 int HTMLFrameElementBase::height() |
247 { | 274 { |
248 document()->updateLayoutIgnorePendingStylesheets(); | 275 document()->updateLayoutIgnorePendingStylesheets(); |
249 if (!renderBox()) | 276 if (!renderBox()) |
250 return 0; | 277 return 0; |
251 return renderBox()->height(); | 278 return renderBox()->height(); |
252 } | 279 } |
253 | 280 |
| 281 // Some types of content can restrict the ability to move the iframes between pa
ges. |
| 282 // For example, the plugin infrastructure of an embedder may associate the plugi
n instances |
| 283 // with the top-level Frame for tracking various resources and failure to transf
er those |
| 284 // resources correctly may lead to crashes and other ill effects (https://bugs.w
ebkit.org/show_bug.cgi?id=68267) |
| 285 bool HTMLFrameElementBase::canRemainAliveOnRemovalFromTree() |
| 286 { |
| 287 return !hasPluginElements(contentFrame()); |
| 288 } |
| 289 |
254 void HTMLFrameElementBase::setRemainsAliveOnRemovalFromTree(bool value) | 290 void HTMLFrameElementBase::setRemainsAliveOnRemovalFromTree(bool value) |
255 { | 291 { |
| 292 ASSERT(!value || canRemainAliveOnRemovalFromTree()); |
256 m_remainsAliveOnRemovalFromTree = value; | 293 m_remainsAliveOnRemovalFromTree = value; |
257 | 294 |
258 // There is a possibility that JS will do document.adoptNode() on this eleme
nt but will not insert it into the tree. | 295 // There is a possibility that JS will do document.adoptNode() on this eleme
nt but will not insert it into the tree. |
259 // Start the async timer that is normally stopped by attach(). If it's not s
topped and fires, it'll unload the frame. | 296 // Start the async timer that is normally stopped by attach(). If it's not s
topped and fires, it'll unload the frame. |
260 if (value) | 297 if (value) |
261 m_checkInDocumentTimer.startOneShot(0); | 298 m_checkInDocumentTimer.startOneShot(0); |
262 else | 299 else |
263 m_checkInDocumentTimer.stop(); | 300 m_checkInDocumentTimer.stop(); |
264 } | 301 } |
265 | 302 |
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281 } | 318 } |
282 | 319 |
283 #if ENABLE(FULLSCREEN_API) | 320 #if ENABLE(FULLSCREEN_API) |
284 bool HTMLFrameElementBase::allowFullScreen() const | 321 bool HTMLFrameElementBase::allowFullScreen() const |
285 { | 322 { |
286 return hasAttribute(webkitallowfullscreenAttr); | 323 return hasAttribute(webkitallowfullscreenAttr); |
287 } | 324 } |
288 #endif | 325 #endif |
289 | 326 |
290 } // namespace WebCore | 327 } // namespace WebCore |
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