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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) 2001 Dirk Mueller (mueller@kde.org) | 4 * (C) 2001 Dirk Mueller (mueller@kde.org) |
5 * (C) 2006 Alexey Proskuryakov (ap@webkit.org) | 5 * (C) 2006 Alexey Proskuryakov (ap@webkit.org) |
6 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All | 6 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All |
7 * rights reserved. | 7 * rights reserved. |
8 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. | 8 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. |
9 * (http://www.torchmobile.com/) | 9 * (http://www.torchmobile.com/) |
10 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies) | 10 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies) |
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187 } | 187 } |
188 | 188 |
189 Event* createEvent(const AtomicString& type, EventTarget& target) { | 189 Event* createEvent(const AtomicString& type, EventTarget& target) { |
190 EventInit initializer; | 190 EventInit initializer; |
191 initializer.setBubbles(isPrefixed(type)); | 191 initializer.setBubbles(isPrefixed(type)); |
192 Event* event = Event::create(type, initializer); | 192 Event* event = Event::create(type, initializer); |
193 event->setTarget(&target); | 193 event->setTarget(&target); |
194 return event; | 194 return event; |
195 } | 195 } |
196 | 196 |
| 197 // Walks the frame tree and returns the first local ancestor frame, if any. |
| 198 LocalFrame* nextLocalAncestor(Frame& frame) { |
| 199 Frame* parent = frame.tree().parent(); |
| 200 if (!parent) |
| 201 return nullptr; |
| 202 if (parent->isLocalFrame()) |
| 203 return toLocalFrame(parent); |
| 204 return nextLocalAncestor(*parent); |
| 205 } |
| 206 |
| 207 // Walks the document's frame tree and returns the document of the first local |
| 208 // ancestor frame, if any. |
| 209 Document* nextLocalAncestor(Document& document) { |
| 210 LocalFrame* frame = document.frame(); |
| 211 if (!frame) |
| 212 return nullptr; |
| 213 LocalFrame* next = nextLocalAncestor(*document.frame()); |
| 214 if (!next) |
| 215 return nullptr; |
| 216 DCHECK(next->document()); |
| 217 return next->document(); |
| 218 } |
| 219 |
197 // Helper to walk the ancestor chain and return the Document of the topmost | 220 // Helper to walk the ancestor chain and return the Document of the topmost |
198 // local ancestor frame. Note that this is not the same as the topmost frame's | 221 // local ancestor frame. Note that this is not the same as the topmost frame's |
199 // Document, which might be unavailable in OOPIF scenarios. For example, with | 222 // Document, which might be unavailable in OOPIF scenarios. For example, with |
200 // OOPIFs, when called on the bottom frame's Document in a A-B-C-B hierarchy in | 223 // OOPIFs, when called on the bottom frame's Document in a A-B-C-B hierarchy in |
201 // process B, this will skip remote frame C and return this frame: A-[B]-C-B. | 224 // process B, this will skip remote frame C and return this frame: A-[B]-C-B. |
202 Document& topmostLocalAncestor(Document& document) { | 225 Document& topmostLocalAncestor(Document& document) { |
203 Document* topmost = &document; | 226 if (Document* next = nextLocalAncestor(document)) |
204 Frame* frame = document.frame(); | 227 return topmostLocalAncestor(*next); |
205 while (frame) { | 228 return document; |
206 frame = frame->tree().parent(); | |
207 if (frame && frame->isLocalFrame()) | |
208 topmost = toLocalFrame(frame)->document(); | |
209 } | |
210 return *topmost; | |
211 } | 229 } |
212 | 230 |
213 // Helper to find the browsing context container in |doc| that embeds the | 231 // Helper to find the browsing context container in |doc| that embeds the |
214 // |descendant| Document, possibly through multiple levels of nesting. This | 232 // |descendant| Document, possibly through multiple levels of nesting. This |
215 // works even in OOPIF scenarios like A-B-A, where there may be remote frames | 233 // works even in OOPIF scenarios like A-B-A, where there may be remote frames |
216 // in between |doc| and |descendant|. | 234 // in between |doc| and |descendant|. |
217 HTMLFrameOwnerElement* findContainerForDescendant(const Document& doc, | 235 HTMLFrameOwnerElement* findContainerForDescendant(const Document& doc, |
218 const Document& descendant) { | 236 const Document& descendant) { |
219 Frame* frame = descendant.frame(); | 237 Frame* frame = descendant.frame(); |
220 while (frame->tree().parent() != doc.frame()) | 238 while (frame->tree().parent() != doc.frame()) |
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382 // | 400 // |
383 // For OOPIF scenarios, |docs| will only contain documents for local | 401 // For OOPIF scenarios, |docs| will only contain documents for local |
384 // ancestors, and remote ancestors will be processed in their | 402 // ancestors, and remote ancestors will be processed in their |
385 // respective processes. This preserves the spec's event firing order | 403 // respective processes. This preserves the spec's event firing order |
386 // for local ancestors, but not for remote ancestors. However, that | 404 // for local ancestors, but not for remote ancestors. However, that |
387 // difference shouldn't be observable in practice: a fullscreenchange | 405 // difference shouldn't be observable in practice: a fullscreenchange |
388 // event handler would need to postMessage a frame in another renderer | 406 // event handler would need to postMessage a frame in another renderer |
389 // process, where the message should be queued up and processed after | 407 // process, where the message should be queued up and processed after |
390 // the IPC that dispatches fullscreenchange. | 408 // the IPC that dispatches fullscreenchange. |
391 HeapDeque<Member<Document>> docs; | 409 HeapDeque<Member<Document>> docs; |
392 | 410 for (Document* doc = &document; doc; doc = nextLocalAncestor(*doc)) |
393 docs.prepend(&document); | 411 docs.prepend(doc); |
394 for (Frame* frame = document.frame()->tree().parent(); frame; | |
395 frame = frame->tree().parent()) { | |
396 if (frame->isLocalFrame()) | |
397 docs.prepend(toLocalFrame(frame)->document()); | |
398 } | |
399 | 412 |
400 // 4. For each document in docs, run these substeps: | 413 // 4. For each document in docs, run these substeps: |
401 HeapDeque<Member<Document>>::iterator current = docs.begin(), | 414 HeapDeque<Member<Document>>::iterator current = docs.begin(), |
402 following = docs.begin(); | 415 following = docs.begin(); |
403 | 416 |
404 do { | 417 do { |
405 ++following; | 418 ++following; |
406 | 419 |
407 // 1. Let following document be the document after document in docs, or | 420 // 1. Let following document be the document after document in docs, or |
408 // null if there is no such document. | 421 // null if there is no such document. |
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541 // 3. If doc's fullscreen element stack is empty and doc's browsing context | 554 // 3. If doc's fullscreen element stack is empty and doc's browsing context |
542 // has a browsing context container, set doc to that browsing context | 555 // has a browsing context container, set doc to that browsing context |
543 // container's node document. | 556 // container's node document. |
544 // | 557 // |
545 // OOPIF: If browsing context container's document is in another | 558 // OOPIF: If browsing context container's document is in another |
546 // process, keep moving up the ancestor chain and looking for a | 559 // process, keep moving up the ancestor chain and looking for a |
547 // browsing context container with a local document. | 560 // browsing context container with a local document. |
548 // TODO(alexmos): Deal with nested fullscreen cases, see | 561 // TODO(alexmos): Deal with nested fullscreen cases, see |
549 // https://crbug.com/617369. | 562 // https://crbug.com/617369. |
550 if (!newTop) { | 563 if (!newTop) { |
551 Frame* frame = currentDoc->frame()->tree().parent(); | 564 currentDoc = nextLocalAncestor(*currentDoc); |
552 while (frame && frame->isRemoteFrame()) | 565 continue; |
553 frame = frame->tree().parent(); | |
554 if (frame) { | |
555 currentDoc = toLocalFrame(frame)->document(); | |
556 continue; | |
557 } | |
558 } | 566 } |
559 | 567 |
560 // 4. Otherwise, set doc to null. | 568 // 4. Otherwise, set doc to null. |
561 currentDoc = nullptr; | 569 currentDoc = nullptr; |
562 } | 570 } |
563 | 571 |
564 // 6. Return, and run the remaining steps asynchronously. | 572 // 6. Return, and run the remaining steps asynchronously. |
565 // 7. Optionally, perform some animation. | 573 // 7. Optionally, perform some animation. |
566 | 574 |
567 // Only exit fullscreen mode if the fullscreen element stack is empty. | 575 // Only exit fullscreen mode if the fullscreen element stack is empty. |
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818 DEFINE_TRACE(Fullscreen) { | 826 DEFINE_TRACE(Fullscreen) { |
819 visitor->trace(m_pendingFullscreenElement); | 827 visitor->trace(m_pendingFullscreenElement); |
820 visitor->trace(m_fullscreenElementStack); | 828 visitor->trace(m_fullscreenElementStack); |
821 visitor->trace(m_currentFullScreenElement); | 829 visitor->trace(m_currentFullScreenElement); |
822 visitor->trace(m_eventQueue); | 830 visitor->trace(m_eventQueue); |
823 Supplement<Document>::trace(visitor); | 831 Supplement<Document>::trace(visitor); |
824 ContextLifecycleObserver::trace(visitor); | 832 ContextLifecycleObserver::trace(visitor); |
825 } | 833 } |
826 | 834 |
827 } // namespace blink | 835 } // namespace blink |
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