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| 1 /* | 1 /* |
| 2 * Copyright (C) 2009, 2010 Apple Inc. All rights reserved. | 2 * Copyright (C) 2009, 2010 Apple Inc. All rights reserved. |
| 3 * Copyright (C) Research In Motion Limited 2010. All rights reserved. | 3 * Copyright (C) Research In Motion Limited 2010. All rights reserved. |
| 4 * | 4 * |
| 5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
| 6 * modification, are permitted provided that the following conditions | 6 * modification, are permitted provided that the following conditions |
| 7 * are met: | 7 * are met: |
| 8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. 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 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
| (...skipping 18 matching lines...) Expand all Loading... |
| 29 #include "core/dom/AXObjectCache.h" | 29 #include "core/dom/AXObjectCache.h" |
| 30 #include "core/layout/LayoutCounter.h" | 30 #include "core/layout/LayoutCounter.h" |
| 31 #include "core/layout/LayoutObject.h" | 31 #include "core/layout/LayoutObject.h" |
| 32 #include "core/layout/LayoutView.h" | 32 #include "core/layout/LayoutView.h" |
| 33 #include "core/paint/ObjectPaintInvalidator.h" | 33 #include "core/paint/ObjectPaintInvalidator.h" |
| 34 | 34 |
| 35 namespace blink { | 35 namespace blink { |
| 36 | 36 |
| 37 void LayoutObjectChildList::destroyLeftoverChildren() { | 37 void LayoutObjectChildList::destroyLeftoverChildren() { |
| 38 while (firstChild()) { | 38 while (firstChild()) { |
| 39 // List markers are owned by their enclosing list and so don't get destroyed
by this container. | 39 // List markers are owned by their enclosing list and so don't get destroyed |
| 40 // by this container. |
| 40 if (firstChild()->isListMarker()) { | 41 if (firstChild()->isListMarker()) { |
| 41 firstChild()->remove(); | 42 firstChild()->remove(); |
| 42 continue; | 43 continue; |
| 43 } | 44 } |
| 44 | 45 |
| 45 // Destroy any anonymous children remaining in the layout tree, as well as i
mplicit (shadow) DOM elements like those used in the engine-based text fields. | 46 // Destroy any anonymous children remaining in the layout tree, as well as |
| 47 // implicit (shadow) DOM elements like those used in the engine-based text |
| 48 // fields. |
| 46 if (firstChild()->node()) | 49 if (firstChild()->node()) |
| 47 firstChild()->node()->setLayoutObject(nullptr); | 50 firstChild()->node()->setLayoutObject(nullptr); |
| 48 firstChild()->destroy(); | 51 firstChild()->destroy(); |
| 49 } | 52 } |
| 50 } | 53 } |
| 51 | 54 |
| 52 LayoutObject* LayoutObjectChildList::removeChildNode(LayoutObject* owner, | 55 LayoutObject* LayoutObjectChildList::removeChildNode(LayoutObject* owner, |
| 53 LayoutObject* oldChild, | 56 LayoutObject* oldChild, |
| 54 bool notifyLayoutObject) { | 57 bool notifyLayoutObject) { |
| 55 ASSERT(oldChild->parent() == owner); | 58 ASSERT(oldChild->parent() == owner); |
| 56 ASSERT(this == owner->virtualChildren()); | 59 ASSERT(this == owner->virtualChildren()); |
| 57 | 60 |
| 58 if (oldChild->isFloatingOrOutOfFlowPositioned()) | 61 if (oldChild->isFloatingOrOutOfFlowPositioned()) |
| 59 toLayoutBox(oldChild)->removeFloatingOrPositionedChildFromBlockLists(); | 62 toLayoutBox(oldChild)->removeFloatingOrPositionedChildFromBlockLists(); |
| 60 | 63 |
| 61 if (!owner->documentBeingDestroyed()) { | 64 if (!owner->documentBeingDestroyed()) { |
| 62 // So that we'll get the appropriate dirty bit set (either that a normal flo
w child got yanked or | 65 // So that we'll get the appropriate dirty bit set (either that a normal |
| 63 // that a positioned child got yanked). We also issue paint invalidations, s
o that the area exposed when the child | 66 // flow child got yanked or that a positioned child got yanked). We also |
| 67 // issue paint invalidations, so that the area exposed when the child |
| 64 // disappears gets paint invalidated properly. | 68 // disappears gets paint invalidated properly. |
| 65 if (notifyLayoutObject && oldChild->everHadLayout()) | 69 if (notifyLayoutObject && oldChild->everHadLayout()) |
| 66 oldChild->setNeedsLayoutAndPrefWidthsRecalc( | 70 oldChild->setNeedsLayoutAndPrefWidthsRecalc( |
| 67 LayoutInvalidationReason::RemovedFromLayout); | 71 LayoutInvalidationReason::RemovedFromLayout); |
| 68 invalidatePaintOnRemoval(*oldChild); | 72 invalidatePaintOnRemoval(*oldChild); |
| 69 } | 73 } |
| 70 | 74 |
| 71 // If we have a line box wrapper, delete it. | 75 // If we have a line box wrapper, delete it. |
| 72 if (oldChild->isBox()) | 76 if (oldChild->isBox()) |
| 73 toLayoutBox(oldChild)->deleteLineBoxWrapper(); | 77 toLayoutBox(oldChild)->deleteLineBoxWrapper(); |
| 74 | 78 |
| 75 if (!owner->documentBeingDestroyed()) { | 79 if (!owner->documentBeingDestroyed()) { |
| 76 // If oldChild is the start or end of the selection, then clear the selectio
n to | 80 // If oldChild is the start or end of the selection, then clear the |
| 77 // avoid problems of invalid pointers. | 81 // selection to avoid problems of invalid pointers. |
| 78 // FIXME: The FrameSelection should be responsible for this when it | 82 // FIXME: The FrameSelection should be responsible for this when it |
| 79 // is notified of DOM mutations. | 83 // is notified of DOM mutations. |
| 80 if (oldChild->isSelectionBorder()) | 84 if (oldChild->isSelectionBorder()) |
| 81 owner->view()->clearSelection(); | 85 owner->view()->clearSelection(); |
| 82 | 86 |
| 83 owner->notifyOfSubtreeChange(); | 87 owner->notifyOfSubtreeChange(); |
| 84 | 88 |
| 85 if (notifyLayoutObject) { | 89 if (notifyLayoutObject) { |
| 86 LayoutCounter::layoutObjectSubtreeWillBeDetached(oldChild); | 90 LayoutCounter::layoutObjectSubtreeWillBeDetached(oldChild); |
| 87 oldChild->willBeRemovedFromTree(); | 91 oldChild->willBeRemovedFromTree(); |
| 88 } else if (oldChild->isBox() && | 92 } else if (oldChild->isBox() && |
| 89 toLayoutBox(oldChild)->isOrthogonalWritingModeRoot()) { | 93 toLayoutBox(oldChild)->isOrthogonalWritingModeRoot()) { |
| 90 toLayoutBox(oldChild)->unmarkOrthogonalWritingModeRoot(); | 94 toLayoutBox(oldChild)->unmarkOrthogonalWritingModeRoot(); |
| 91 } | 95 } |
| 92 } | 96 } |
| 93 | 97 |
| 94 // WARNING: There should be no code running between willBeRemovedFromTree and
the actual removal below. | 98 // WARNING: There should be no code running between willBeRemovedFromTree and |
| 95 // This is needed to avoid race conditions where willBeRemovedFromTree would d
irty the tree's structure | 99 // the actual removal below. |
| 96 // and the code running here would force an untimely rebuilding, leaving |oldC
hild| dangling. | 100 // This is needed to avoid race conditions where willBeRemovedFromTree would |
| 101 // dirty the tree's structure and the code running here would force an |
| 102 // untimely rebuilding, leaving |oldChild| dangling. |
| 97 | 103 |
| 98 if (oldChild->previousSibling()) | 104 if (oldChild->previousSibling()) |
| 99 oldChild->previousSibling()->setNextSibling(oldChild->nextSibling()); | 105 oldChild->previousSibling()->setNextSibling(oldChild->nextSibling()); |
| 100 if (oldChild->nextSibling()) | 106 if (oldChild->nextSibling()) |
| 101 oldChild->nextSibling()->setPreviousSibling(oldChild->previousSibling()); | 107 oldChild->nextSibling()->setPreviousSibling(oldChild->previousSibling()); |
| 102 | 108 |
| 103 if (firstChild() == oldChild) | 109 if (firstChild() == oldChild) |
| 104 m_firstChild = oldChild->nextSibling(); | 110 m_firstChild = oldChild->nextSibling(); |
| 105 if (lastChild() == oldChild) | 111 if (lastChild() == oldChild) |
| 106 m_lastChild = oldChild->previousSibling(); | 112 m_lastChild = oldChild->previousSibling(); |
| (...skipping 19 matching lines...) Expand all Loading... |
| 126 ASSERT(!newChild->parent()); | 132 ASSERT(!newChild->parent()); |
| 127 ASSERT(this == owner->virtualChildren()); | 133 ASSERT(this == owner->virtualChildren()); |
| 128 ASSERT(!owner->isLayoutBlockFlow() || | 134 ASSERT(!owner->isLayoutBlockFlow() || |
| 129 (!newChild->isTableSection() && !newChild->isTableRow() && | 135 (!newChild->isTableSection() && !newChild->isTableRow() && |
| 130 !newChild->isTableCell())); | 136 !newChild->isTableCell())); |
| 131 | 137 |
| 132 while (beforeChild && beforeChild->parent() && beforeChild->parent() != owner) | 138 while (beforeChild && beforeChild->parent() && beforeChild->parent() != owner) |
| 133 beforeChild = beforeChild->parent(); | 139 beforeChild = beforeChild->parent(); |
| 134 | 140 |
| 135 // This should never happen, but if it does prevent layout tree corruption | 141 // This should never happen, but if it does prevent layout tree corruption |
| 136 // where child->parent() ends up being owner but child->nextSibling()->parent(
) | 142 // where child->parent() ends up being owner but |
| 137 // is not owner. | 143 // child->nextSibling()->parent() is not owner. |
| 138 if (beforeChild && beforeChild->parent() != owner) { | 144 if (beforeChild && beforeChild->parent() != owner) { |
| 139 ASSERT_NOT_REACHED(); | 145 ASSERT_NOT_REACHED(); |
| 140 return; | 146 return; |
| 141 } | 147 } |
| 142 | 148 |
| 143 newChild->setParent(owner); | 149 newChild->setParent(owner); |
| 144 | 150 |
| 145 if (firstChild() == beforeChild) | 151 if (firstChild() == beforeChild) |
| 146 m_firstChild = newChild; | 152 m_firstChild = newChild; |
| 147 | 153 |
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| 172 // If the inserted node is currently marked as needing to notify children then | 178 // If the inserted node is currently marked as needing to notify children then |
| 173 // we have to propagate that mark up the tree. | 179 // we have to propagate that mark up the tree. |
| 174 if (newChild->wasNotifiedOfSubtreeChange()) | 180 if (newChild->wasNotifiedOfSubtreeChange()) |
| 175 owner->notifyAncestorsOfSubtreeChange(); | 181 owner->notifyAncestorsOfSubtreeChange(); |
| 176 | 182 |
| 177 newChild->setNeedsLayoutAndPrefWidthsRecalc( | 183 newChild->setNeedsLayoutAndPrefWidthsRecalc( |
| 178 LayoutInvalidationReason::AddedToLayout); | 184 LayoutInvalidationReason::AddedToLayout); |
| 179 newChild->setShouldDoFullPaintInvalidation( | 185 newChild->setShouldDoFullPaintInvalidation( |
| 180 PaintInvalidationLayoutObjectInsertion); | 186 PaintInvalidationLayoutObjectInsertion); |
| 181 if (!owner->normalChildNeedsLayout()) | 187 if (!owner->normalChildNeedsLayout()) |
| 182 owner | 188 owner->setChildNeedsLayout(); // We may supply the static position for an |
| 183 ->setChildNeedsLayout(); // We may supply the static position for an ab
solute positioned child. | 189 // absolute positioned child. |
| 184 | 190 |
| 185 if (!owner->documentBeingDestroyed()) | 191 if (!owner->documentBeingDestroyed()) |
| 186 owner->notifyOfSubtreeChange(); | 192 owner->notifyOfSubtreeChange(); |
| 187 | 193 |
| 188 if (AXObjectCache* cache = owner->document().axObjectCache()) | 194 if (AXObjectCache* cache = owner->document().axObjectCache()) |
| 189 cache->childrenChanged(owner); | 195 cache->childrenChanged(owner); |
| 190 } | 196 } |
| 191 | 197 |
| 192 void LayoutObjectChildList::invalidatePaintOnRemoval(LayoutObject& oldChild) { | 198 void LayoutObjectChildList::invalidatePaintOnRemoval(LayoutObject& oldChild) { |
| 193 if (!oldChild.isRooted()) | 199 if (!oldChild.isRooted()) |
| 194 return; | 200 return; |
| 195 if (oldChild.isBody()) | 201 if (oldChild.isBody()) |
| 196 oldChild.view()->setShouldDoFullPaintInvalidation(); | 202 oldChild.view()->setShouldDoFullPaintInvalidation(); |
| 197 ObjectPaintInvalidator paintInvalidator(oldChild); | 203 ObjectPaintInvalidator paintInvalidator(oldChild); |
| 198 paintInvalidator.slowSetPaintingLayerNeedsRepaint(); | 204 paintInvalidator.slowSetPaintingLayerNeedsRepaint(); |
| 199 paintInvalidator.invalidatePaintOfPreviousPaintInvalidationRect( | 205 paintInvalidator.invalidatePaintOfPreviousPaintInvalidationRect( |
| 200 oldChild.containerForPaintInvalidation(), | 206 oldChild.containerForPaintInvalidation(), |
| 201 PaintInvalidationLayoutObjectRemoval); | 207 PaintInvalidationLayoutObjectRemoval); |
| 202 } | 208 } |
| 203 | 209 |
| 204 } // namespace blink | 210 } // namespace blink |
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