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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 Peter Kelly (pmk@post.com) | 4 * (C) 2001 Peter Kelly (pmk@post.com) |
5 * (C) 2001 Dirk Mueller (mueller@kde.org) | 5 * (C) 2001 Dirk Mueller (mueller@kde.org) |
6 * (C) 2007 David Smith (catfish.man@gmail.com) | 6 * (C) 2007 David Smith (catfish.man@gmail.com) |
7 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc.
All rights reserved. | 7 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc.
All rights reserved. |
8 * (C) 2007 Eric Seidel (eric@webkit.org) | 8 * (C) 2007 Eric Seidel (eric@webkit.org) |
9 * | 9 * |
10 * This library is free software; you can redistribute it and/or | 10 * This library is free software; you can redistribute it and/or |
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105 #include "core/html/HTMLTemplateElement.h" | 105 #include "core/html/HTMLTemplateElement.h" |
106 #include "core/html/parser/HTMLParserIdioms.h" | 106 #include "core/html/parser/HTMLParserIdioms.h" |
107 #include "core/inspector/InspectorInstrumentation.h" | 107 #include "core/inspector/InspectorInstrumentation.h" |
108 #include "core/layout/LayoutTextFragment.h" | 108 #include "core/layout/LayoutTextFragment.h" |
109 #include "core/layout/LayoutView.h" | 109 #include "core/layout/LayoutView.h" |
110 #include "core/page/ChromeClient.h" | 110 #include "core/page/ChromeClient.h" |
111 #include "core/page/FocusController.h" | 111 #include "core/page/FocusController.h" |
112 #include "core/page/Page.h" | 112 #include "core/page/Page.h" |
113 #include "core/page/PointerLockController.h" | 113 #include "core/page/PointerLockController.h" |
114 #include "core/page/SpatialNavigation.h" | 114 #include "core/page/SpatialNavigation.h" |
| 115 #include "core/page/scrolling/ScrollCustomizationCallbacks.h" |
115 #include "core/page/scrolling/ScrollState.h" | 116 #include "core/page/scrolling/ScrollState.h" |
| 117 #include "core/page/scrolling/ScrollStateCallback.h" |
116 #include "core/paint/DeprecatedPaintLayer.h" | 118 #include "core/paint/DeprecatedPaintLayer.h" |
117 #include "core/svg/SVGDocumentExtensions.h" | 119 #include "core/svg/SVGDocumentExtensions.h" |
118 #include "core/svg/SVGElement.h" | 120 #include "core/svg/SVGElement.h" |
119 #include "platform/EventDispatchForbiddenScope.h" | 121 #include "platform/EventDispatchForbiddenScope.h" |
120 #include "platform/RuntimeEnabledFeatures.h" | 122 #include "platform/RuntimeEnabledFeatures.h" |
121 #include "platform/UserGestureIndicator.h" | 123 #include "platform/UserGestureIndicator.h" |
122 #include "platform/scroll/ScrollableArea.h" | 124 #include "platform/scroll/ScrollableArea.h" |
123 #include "wtf/BitVector.h" | 125 #include "wtf/BitVector.h" |
124 #include "wtf/HashFunctions.h" | 126 #include "wtf/HashFunctions.h" |
125 #include "wtf/text/CString.h" | 127 #include "wtf/text/CString.h" |
126 #include "wtf/text/StringBuilder.h" | 128 #include "wtf/text/StringBuilder.h" |
127 #include "wtf/text/TextPosition.h" | 129 #include "wtf/text/TextPosition.h" |
128 | 130 |
129 namespace blink { | 131 namespace blink { |
130 | 132 |
| 133 namespace { |
| 134 |
| 135 // We need to retain the scroll customization callbacks until the element |
| 136 // they're associated with is destroyed. It would be simplest if the callbacks |
| 137 // could be stored in ElementRareData, but we can't afford the space |
| 138 // increase. Instead, keep the scroll customization callbacks here. The other |
| 139 // option would be to store these callbacks on the FrameHost or document, but |
| 140 // that necessitates a bunch more logic for transferring the callbacks between |
| 141 // FrameHosts when elements are moved around. |
| 142 ScrollCustomizationCallbacks& scrollCustomizationCallbacks() |
| 143 { |
| 144 ASSERT(RuntimeEnabledFeatures::scrollCustomizationEnabled()); |
| 145 DEFINE_STATIC_LOCAL(Persistent<ScrollCustomizationCallbacks>, |
| 146 scrollCustomizationCallbacks, (new ScrollCustomizationCallbacks())); |
| 147 return *scrollCustomizationCallbacks; |
| 148 } |
| 149 |
| 150 } // namespace |
| 151 |
131 using namespace HTMLNames; | 152 using namespace HTMLNames; |
132 using namespace XMLNames; | 153 using namespace XMLNames; |
133 | 154 |
134 PassRefPtrWillBeRawPtr<Element> Element::create(const QualifiedName& tagName, Do
cument* document) | 155 PassRefPtrWillBeRawPtr<Element> Element::create(const QualifiedName& tagName, Do
cument* document) |
135 { | 156 { |
136 return adoptRefWillBeNoop(new Element(tagName, document, CreateElement)); | 157 return adoptRefWillBeNoop(new Element(tagName, document, CreateElement)); |
137 } | 158 } |
138 | 159 |
139 Element::Element(const QualifiedName& tagName, Document* document, ConstructionT
ype type) | 160 Element::Element(const QualifiedName& tagName, Document* document, ConstructionT
ype type) |
140 : ContainerNode(document, type) | 161 : ContainerNode(document, type) |
141 , m_tagName(tagName) | 162 , m_tagName(tagName) |
142 { | 163 { |
143 } | 164 } |
144 | 165 |
145 Element::~Element() | 166 Element::~Element() |
146 { | 167 { |
147 ASSERT(needsAttach()); | 168 ASSERT(needsAttach()); |
148 | 169 |
149 #if !ENABLE(OILPAN) | 170 #if !ENABLE(OILPAN) |
150 if (hasRareData()) { | 171 if (hasRareData()) { |
151 elementRareData()->clearShadow(); | 172 elementRareData()->clearShadow(); |
152 detachAllAttrNodesFromElement(); | 173 detachAllAttrNodesFromElement(); |
153 } | 174 } |
154 | 175 |
155 if (isCustomElement()) | 176 if (isCustomElement()) |
156 CustomElement::wasDestroyed(this); | 177 CustomElement::wasDestroyed(this); |
157 | 178 |
| 179 if (RuntimeEnabledFeatures::scrollCustomizationEnabled()) |
| 180 scrollCustomizationCallbacks().removeCallbacksForElement(this); |
| 181 |
158 // With Oilpan, either the Element has been removed from the Document | 182 // With Oilpan, either the Element has been removed from the Document |
159 // or the Document is dead as well. If the Element has been removed from | 183 // or the Document is dead as well. If the Element has been removed from |
160 // the Document the element has already been removed from the pending | 184 // the Document the element has already been removed from the pending |
161 // resources. If the document is also dead, there is no need to remove | 185 // resources. If the document is also dead, there is no need to remove |
162 // the element from the pending resources. | 186 // the element from the pending resources. |
163 if (hasPendingResources()) { | 187 if (hasPendingResources()) { |
164 document().accessSVGExtensions().removeElementFromPendingResources(this)
; | 188 document().accessSVGExtensions().removeElementFromPendingResources(this)
; |
165 ASSERT(!hasPendingResources()); | 189 ASSERT(!hasPendingResources()); |
166 } | 190 } |
167 #endif | 191 #endif |
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463 if (!layoutObject()) | 487 if (!layoutObject()) |
464 return; | 488 return; |
465 | 489 |
466 LayoutRect bounds = boundingBox(); | 490 LayoutRect bounds = boundingBox(); |
467 if (centerIfNeeded) | 491 if (centerIfNeeded) |
468 layoutObject()->scrollRectToVisible(bounds, ScrollAlignment::alignCenter
IfNeeded, ScrollAlignment::alignCenterIfNeeded); | 492 layoutObject()->scrollRectToVisible(bounds, ScrollAlignment::alignCenter
IfNeeded, ScrollAlignment::alignCenterIfNeeded); |
469 else | 493 else |
470 layoutObject()->scrollRectToVisible(bounds, ScrollAlignment::alignToEdge
IfNeeded, ScrollAlignment::alignToEdgeIfNeeded); | 494 layoutObject()->scrollRectToVisible(bounds, ScrollAlignment::alignToEdge
IfNeeded, ScrollAlignment::alignToEdgeIfNeeded); |
471 } | 495 } |
472 | 496 |
473 void Element::distributeScroll(ScrollState& scrollState) | 497 void Element::setDistributeScroll(ScrollStateCallback* scrollStateCallback, Stri
ng nativeScrollBehavior) |
| 498 { |
| 499 scrollStateCallback->setNativeScrollBehavior(ScrollStateCallback::toNativeSc
rollBehavior(nativeScrollBehavior)); |
| 500 scrollCustomizationCallbacks().setDistributeScroll(this, scrollStateCallback
); |
| 501 } |
| 502 |
| 503 void Element::setApplyScroll(ScrollStateCallback* scrollStateCallback, String na
tiveScrollBehavior) |
| 504 { |
| 505 scrollStateCallback->setNativeScrollBehavior(ScrollStateCallback::toNativeSc
rollBehavior(nativeScrollBehavior)); |
| 506 scrollCustomizationCallbacks().setApplyScroll(this, scrollStateCallback); |
| 507 } |
| 508 |
| 509 void Element::nativeDistributeScroll(ScrollState& scrollState) |
474 { | 510 { |
475 ASSERT(RuntimeEnabledFeatures::scrollCustomizationEnabled()); | 511 ASSERT(RuntimeEnabledFeatures::scrollCustomizationEnabled()); |
476 if (scrollState.fullyConsumed()) | 512 if (scrollState.fullyConsumed()) |
477 return; | 513 return; |
478 | 514 |
479 scrollState.distributeToScrollChainDescendant(); | 515 scrollState.distributeToScrollChainDescendant(); |
480 | 516 |
481 // If the scroll doesn't propagate, and we're currently scrolling | 517 // If the scroll doesn't propagate, and we're currently scrolling |
482 // an element other than this one, prevent the scroll from | 518 // an element other than this one, prevent the scroll from |
483 // propagating to this element. | 519 // propagating to this element. |
484 if (!scrollState.shouldPropagate() | 520 if (!scrollState.shouldPropagate() |
485 && scrollState.deltaConsumedForScrollSequence() | 521 && scrollState.deltaConsumedForScrollSequence() |
486 && scrollState.currentNativeScrollingElement() != this) { | 522 && scrollState.currentNativeScrollingElement() != this) { |
487 return; | 523 return; |
488 } | 524 } |
489 | 525 |
490 const double deltaX = scrollState.deltaX(); | 526 const double deltaX = scrollState.deltaX(); |
491 const double deltaY = scrollState.deltaY(); | 527 const double deltaY = scrollState.deltaY(); |
492 | 528 |
493 applyScroll(scrollState); | 529 callApplyScroll(scrollState); |
494 | 530 |
495 if (deltaX != scrollState.deltaX() || deltaY != scrollState.deltaY()) | 531 if (deltaX != scrollState.deltaX() || deltaY != scrollState.deltaY()) |
496 scrollState.setCurrentNativeScrollingElement(this); | 532 scrollState.setCurrentNativeScrollingElement(this); |
497 } | 533 } |
498 | 534 |
499 void Element::applyScroll(ScrollState& scrollState) | 535 void Element::callDistributeScroll(ScrollState& scrollState) |
| 536 { |
| 537 ScrollStateCallback* callback = scrollCustomizationCallbacks().getDistribute
Scroll(this); |
| 538 if (!callback) { |
| 539 nativeDistributeScroll(scrollState); |
| 540 } else { |
| 541 if (callback->nativeScrollBehavior() == NativeScrollBehavior::PerformAft
erNativeScroll) |
| 542 nativeDistributeScroll(scrollState); |
| 543 callback->handleEvent(&scrollState); |
| 544 if (callback->nativeScrollBehavior() == NativeScrollBehavior::PerformBef
oreNativeScroll) |
| 545 nativeDistributeScroll(scrollState); |
| 546 } |
| 547 }; |
| 548 |
| 549 void Element::nativeApplyScroll(ScrollState& scrollState) |
500 { | 550 { |
501 ASSERT(RuntimeEnabledFeatures::scrollCustomizationEnabled()); | 551 ASSERT(RuntimeEnabledFeatures::scrollCustomizationEnabled()); |
502 if (scrollState.fullyConsumed()) | 552 if (scrollState.fullyConsumed()) |
503 return; | 553 return; |
504 | 554 |
505 const double deltaX = scrollState.deltaX(); | 555 const double deltaX = scrollState.deltaX(); |
506 const double deltaY = scrollState.deltaY(); | 556 const double deltaY = scrollState.deltaY(); |
507 bool scrolled = false; | 557 bool scrolled = false; |
508 | 558 |
509 // Handle the documentElement separately, as it scrolls the FrameView. | 559 if (deltaY || deltaX) |
510 if (this == document().documentElement()) { | 560 document().updateLayoutIgnorePendingStylesheets(); |
| 561 |
| 562 // Handle the scrollingElement separately, as it scrolls the viewport. |
| 563 if (this == document().scrollingElement()) { |
511 FloatSize delta(deltaX, deltaY); | 564 FloatSize delta(deltaX, deltaY); |
512 if (document().frame()->applyScrollDelta(delta, scrollState.isBeginning(
)).didScroll()) { | 565 if (document().frame()->applyScrollDelta(delta, scrollState.isBeginning(
)).didScroll()) { |
513 scrolled = true; | 566 scrolled = true; |
514 scrollState.consumeDeltaNative(scrollState.deltaX(), scrollState.del
taY()); | 567 scrollState.consumeDeltaNative(scrollState.deltaX(), scrollState.del
taY()); |
515 } | 568 } |
516 } else { | 569 } else { |
517 if (!layoutObject()) | 570 if (!layoutObject()) |
518 return; | 571 return; |
519 LayoutBox* curBox = layoutObject()->enclosingBox(); | 572 LayoutBox* curBox = layoutObject()->enclosingBox(); |
520 // FIXME: Native scrollers should only consume the scroll they | 573 // FIXME: Native scrollers should only consume the scroll they |
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535 | 588 |
536 // We need to setCurrentNativeScrollingElement in both the | 589 // We need to setCurrentNativeScrollingElement in both the |
537 // distributeScroll and applyScroll default implementations so | 590 // distributeScroll and applyScroll default implementations so |
538 // that if JS overrides one of these methods, but not the | 591 // that if JS overrides one of these methods, but not the |
539 // other, this bookkeeping remains accurate. | 592 // other, this bookkeeping remains accurate. |
540 scrollState.setCurrentNativeScrollingElement(this); | 593 scrollState.setCurrentNativeScrollingElement(this); |
541 if (scrollState.fromUserInput()) | 594 if (scrollState.fromUserInput()) |
542 document().frame()->view()->setWasScrolledByUser(true); | 595 document().frame()->view()->setWasScrolledByUser(true); |
543 }; | 596 }; |
544 | 597 |
| 598 void Element::callApplyScroll(ScrollState& scrollState) |
| 599 { |
| 600 ScrollStateCallback* callback = scrollCustomizationCallbacks().getApplyScrol
l(this); |
| 601 if (!callback) { |
| 602 nativeApplyScroll(scrollState); |
| 603 } else { |
| 604 if (callback->nativeScrollBehavior() == NativeScrollBehavior::PerformAft
erNativeScroll) |
| 605 nativeApplyScroll(scrollState); |
| 606 callback->handleEvent(&scrollState); |
| 607 if (callback->nativeScrollBehavior() == NativeScrollBehavior::PerformBef
oreNativeScroll) |
| 608 nativeApplyScroll(scrollState); |
| 609 } |
| 610 }; |
| 611 |
545 static float localZoomForLayoutObject(LayoutObject& layoutObject) | 612 static float localZoomForLayoutObject(LayoutObject& layoutObject) |
546 { | 613 { |
547 // FIXME: This does the wrong thing if two opposing zooms are in effect and
canceled each | 614 // FIXME: This does the wrong thing if two opposing zooms are in effect and
canceled each |
548 // other out, but the alternative is that we'd have to crawl up the whole la
yout tree every | 615 // other out, but the alternative is that we'd have to crawl up the whole la
yout tree every |
549 // time (or store an additional bit in the ComputedStyle to indicate that a
zoom was specified). | 616 // time (or store an additional bit in the ComputedStyle to indicate that a
zoom was specified). |
550 float zoomFactor = 1; | 617 float zoomFactor = 1; |
551 if (layoutObject.style()->effectiveZoom() != 1) { | 618 if (layoutObject.style()->effectiveZoom() != 1) { |
552 // Need to find the nearest enclosing LayoutObject that set up | 619 // Need to find the nearest enclosing LayoutObject that set up |
553 // a differing zoom, and then we divide our result by it to eliminate th
e zoom. | 620 // a differing zoom, and then we divide our result by it to eliminate th
e zoom. |
554 LayoutObject* prev = &layoutObject; | 621 LayoutObject* prev = &layoutObject; |
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3449 { | 3516 { |
3450 #if ENABLE(OILPAN) | 3517 #if ENABLE(OILPAN) |
3451 if (hasRareData()) | 3518 if (hasRareData()) |
3452 visitor->trace(elementRareData()); | 3519 visitor->trace(elementRareData()); |
3453 visitor->trace(m_elementData); | 3520 visitor->trace(m_elementData); |
3454 #endif | 3521 #endif |
3455 ContainerNode::trace(visitor); | 3522 ContainerNode::trace(visitor); |
3456 } | 3523 } |
3457 | 3524 |
3458 } // namespace blink | 3525 } // namespace blink |
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