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42d362ff6b
This removes ::trace, traceAfterDispatch and finalizeGarbageCollectedObject. R=abarth@chromium.org Review URL: https://codereview.chromium.org/723253004
322 lines
15 KiB
C++
322 lines
15 KiB
C++
/*
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* Copyright (C) 2005, 2006 Apple Computer, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "core/editing/InsertParagraphSeparatorCommand.h"
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#include "core/HTMLNames.h"
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#include "core/dom/Document.h"
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#include "core/dom/NodeTraversal.h"
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#include "core/dom/Text.h"
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#include "core/editing/EditingStyle.h"
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#include "core/editing/InsertLineBreakCommand.h"
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#include "core/editing/VisibleUnits.h"
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#include "core/editing/htmlediting.h"
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#include "core/html/HTMLElement.h"
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#include "core/rendering/RenderObject.h"
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#include "core/rendering/RenderText.h"
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namespace blink {
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InsertParagraphSeparatorCommand::InsertParagraphSeparatorCommand(Document& document, bool mustUseDefaultParagraphElement, bool pasteBlockquoteIntoUnquotedArea)
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: CompositeEditCommand(document)
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, m_mustUseDefaultParagraphElement(mustUseDefaultParagraphElement)
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{
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}
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bool InsertParagraphSeparatorCommand::preservesTypingStyle() const
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{
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return true;
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}
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void InsertParagraphSeparatorCommand::calculateStyleBeforeInsertion(const Position &pos)
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{
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// It is only important to set a style to apply later if we're at the boundaries of
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// a paragraph. Otherwise, content that is moved as part of the work of the command
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// will lend their styles to the new paragraph without any extra work needed.
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VisiblePosition visiblePos(pos, VP_DEFAULT_AFFINITY);
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if (!isStartOfParagraph(visiblePos) && !isEndOfParagraph(visiblePos))
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return;
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ASSERT(pos.isNotNull());
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m_style = EditingStyle::create(pos);
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m_style->mergeTypingStyle(pos.document());
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}
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bool InsertParagraphSeparatorCommand::shouldUseDefaultParagraphElement(Element* enclosingBlock) const
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{
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return m_mustUseDefaultParagraphElement;
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}
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void InsertParagraphSeparatorCommand::getAncestorsInsideBlock(const Node* insertionNode, Element* outerBlock, Vector<RefPtr<Element> >& ancestors)
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{
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ancestors.clear();
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// Build up list of ancestors elements between the insertion node and the outer block.
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if (insertionNode != outerBlock) {
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for (Element* n = insertionNode->parentElement(); n && n != outerBlock; n = n->parentElement())
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ancestors.append(n);
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}
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}
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PassRefPtr<Element> InsertParagraphSeparatorCommand::cloneHierarchyUnderNewBlock(const Vector<RefPtr<Element> >& ancestors, PassRefPtr<Element> blockToInsert)
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{
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// Make clones of ancestors in between the start node and the start block.
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RefPtr<Element> parent = blockToInsert;
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for (size_t i = ancestors.size(); i != 0; --i) {
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RefPtr<Element> child = ancestors[i - 1]->cloneElementWithoutChildren();
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// It should always be okay to remove id from the cloned elements, since the originals are not deleted.
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child->removeAttribute(HTMLNames::idAttr);
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appendNode(child, parent);
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parent = child.release();
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}
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return parent.release();
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}
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void InsertParagraphSeparatorCommand::doApply()
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{
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if (!endingSelection().isNonOrphanedCaretOrRange())
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return;
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Position insertionPosition = endingSelection().start();
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EAffinity affinity = endingSelection().affinity();
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// Delete the current selection.
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if (endingSelection().isRange()) {
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calculateStyleBeforeInsertion(insertionPosition);
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deleteSelection(false, true);
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insertionPosition = endingSelection().start();
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affinity = endingSelection().affinity();
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}
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// FIXME: The parentAnchoredEquivalent conversion needs to be moved into enclosingBlock.
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RefPtr<Element> startBlock = enclosingBlock(insertionPosition.parentAnchoredEquivalent().containerNode());
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Position canonicalPos = VisiblePosition(insertionPosition).deepEquivalent();
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if (!startBlock
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|| !startBlock->nonShadowBoundaryParentNode()
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// FIXME: If the node is hidden, we don't have a canonical position so we will do the wrong thing for tables and <hr>. https://bugs.webkit.org/show_bug.cgi?id=40342
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|| (!canonicalPos.isNull() && isRenderedTableElement(canonicalPos.deprecatedNode()))) {
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applyCommandToComposite(InsertLineBreakCommand::create(document()));
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return;
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}
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// Use the leftmost candidate.
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insertionPosition = insertionPosition.upstream();
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if (!insertionPosition.isCandidate())
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insertionPosition = insertionPosition.downstream();
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// Adjust the insertion position after the delete
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insertionPosition = positionAvoidingSpecialElementBoundary(insertionPosition);
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VisiblePosition visiblePos(insertionPosition, affinity);
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calculateStyleBeforeInsertion(insertionPosition);
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//---------------------------------------------------------------------
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// Handle special case of typing return on an empty list item
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if (breakOutOfEmptyListItem())
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return;
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//---------------------------------------------------------------------
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// Prepare for more general cases.
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bool isFirstInBlock = isStartOfBlock(visiblePos);
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bool isLastInBlock = isEndOfBlock(visiblePos);
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bool nestNewBlock = false;
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// Create block to be inserted.
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RefPtr<Element> blockToInsert = nullptr;
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if (startBlock->isRootEditableElement()) {
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blockToInsert = createDefaultParagraphElement(document());
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nestNewBlock = true;
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} else if (shouldUseDefaultParagraphElement(startBlock.get())) {
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blockToInsert = createDefaultParagraphElement(document());
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} else {
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blockToInsert = startBlock->cloneElementWithoutChildren();
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}
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//---------------------------------------------------------------------
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// Handle case when position is in the last visible position in its block,
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// including when the block is empty.
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if (isLastInBlock) {
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if (nestNewBlock) {
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if (isFirstInBlock && !lineBreakExistsAtVisiblePosition(visiblePos)) {
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// The block is empty. Create an empty block to
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// represent the paragraph that we're leaving.
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RefPtr<HTMLElement> extraBlock = createDefaultParagraphElement(document());
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appendNode(extraBlock, startBlock);
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}
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appendNode(blockToInsert, startBlock);
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} else {
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// Most of the time we want to stay at the nesting level of the startBlock (e.g., when nesting within lists). However,
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// for div nodes, this can result in nested div tags that are hard to break out of.
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Element* siblingElement = startBlock.get();
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insertNodeAfter(blockToInsert, siblingElement);
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}
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// Recreate the same structure in the new paragraph.
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Vector<RefPtr<Element> > ancestors;
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getAncestorsInsideBlock(positionOutsideTabSpan(insertionPosition).deprecatedNode(), startBlock.get(), ancestors);
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RefPtr<Element> parent = cloneHierarchyUnderNewBlock(ancestors, blockToInsert);
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setEndingSelection(VisibleSelection(firstPositionInNode(parent.get()), DOWNSTREAM, endingSelection().isDirectional()));
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return;
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}
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//---------------------------------------------------------------------
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// Handle case when position is in the first visible position in its block, and
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// similar case where previous position is in another, presumeably nested, block.
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if (isFirstInBlock || !inSameBlock(visiblePos, visiblePos.previous())) {
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Node* refNode = 0;
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insertionPosition = positionOutsideTabSpan(insertionPosition);
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if (isFirstInBlock && !nestNewBlock) {
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refNode = startBlock.get();
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} else if (isFirstInBlock && nestNewBlock) {
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// startBlock should always have children, otherwise isLastInBlock would be true and it's handled above.
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ASSERT(startBlock->hasChildren());
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refNode = startBlock->firstChild();
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}
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else if (insertionPosition.deprecatedNode() == startBlock && nestNewBlock) {
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refNode = NodeTraversal::childAt(*startBlock, insertionPosition.deprecatedEditingOffset());
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ASSERT(refNode); // must be true or we'd be in the end of block case
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} else
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refNode = insertionPosition.deprecatedNode();
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// find ending selection position easily before inserting the paragraph
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insertionPosition = insertionPosition.downstream();
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if (refNode)
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insertNodeBefore(blockToInsert, refNode);
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// Recreate the same structure in the new paragraph.
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Vector<RefPtr<Element> > ancestors;
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getAncestorsInsideBlock(positionAvoidingSpecialElementBoundary(positionOutsideTabSpan(insertionPosition)).deprecatedNode(), startBlock.get(), ancestors);
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// In this case, we need to set the new ending selection.
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setEndingSelection(VisibleSelection(insertionPosition, DOWNSTREAM, endingSelection().isDirectional()));
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return;
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}
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//---------------------------------------------------------------------
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// Handle the (more complicated) general case,
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// Move downstream. Typing style code will take care of carrying along the
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// style of the upstream position.
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insertionPosition = insertionPosition.downstream();
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// At this point, the insertionPosition's node could be a container, and we want to make sure we include
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// all of the correct nodes when building the ancestor list. So this needs to be the deepest representation of the position
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// before we walk the DOM tree.
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insertionPosition = positionOutsideTabSpan(VisiblePosition(insertionPosition).deepEquivalent());
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// If the returned position lies either at the end or at the start of an element that is ignored by editing
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// we should move to its upstream or downstream position.
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if (editingIgnoresContent(insertionPosition.deprecatedNode())) {
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if (insertionPosition.atLastEditingPositionForNode())
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insertionPosition = insertionPosition.downstream();
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else if (insertionPosition.atFirstEditingPositionForNode())
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insertionPosition = insertionPosition.upstream();
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}
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// Make sure we do not cause a rendered space to become unrendered.
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// FIXME: We need the affinity for pos, but pos.downstream() does not give it
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Position leadingWhitespace = leadingWhitespacePosition(insertionPosition, VP_DEFAULT_AFFINITY);
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// FIXME: leadingWhitespacePosition is returning the position before preserved newlines for positions
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// after the preserved newline, causing the newline to be turned into a nbsp.
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if (leadingWhitespace.isNotNull() && leadingWhitespace.deprecatedNode()->isTextNode()) {
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Text* textNode = toText(leadingWhitespace.deprecatedNode());
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ASSERT(!textNode->renderer() || textNode->renderer()->style()->collapseWhiteSpace());
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replaceTextInNodePreservingMarkers(textNode, leadingWhitespace.deprecatedEditingOffset(), 1, nonBreakingSpaceString());
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}
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// Split at pos if in the middle of a text node.
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Position positionAfterSplit;
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if (insertionPosition.anchorType() == Position::PositionIsOffsetInAnchor && insertionPosition.containerNode()->isTextNode()) {
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RefPtr<Text> textNode = toText(insertionPosition.containerNode());
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bool atEnd = static_cast<unsigned>(insertionPosition.offsetInContainerNode()) >= textNode->length();
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if (insertionPosition.deprecatedEditingOffset() > 0 && !atEnd) {
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splitTextNode(textNode, insertionPosition.offsetInContainerNode());
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positionAfterSplit = firstPositionInNode(textNode.get());
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insertionPosition.moveToPosition(textNode->previousSibling(), insertionPosition.offsetInContainerNode());
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visiblePos = VisiblePosition(insertionPosition);
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}
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}
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// If we got detached due to mutation events, just bail out.
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if (!startBlock->parentNode())
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return;
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// Put the added block in the tree.
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if (nestNewBlock) {
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appendNode(blockToInsert.get(), startBlock);
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} else {
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insertNodeAfter(blockToInsert.get(), startBlock);
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}
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document().updateLayoutIgnorePendingStylesheets();
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// Move the start node and the siblings of the start node.
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if (VisiblePosition(insertionPosition) != VisiblePosition(positionBeforeNode(blockToInsert.get()))) {
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Node* n;
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if (insertionPosition.containerNode() == startBlock)
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n = insertionPosition.computeNodeAfterPosition();
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else {
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Node* splitTo = insertionPosition.containerNode();
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if (splitTo->isTextNode() && insertionPosition.offsetInContainerNode() >= caretMaxOffset(splitTo))
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splitTo = NodeTraversal::next(*splitTo, startBlock.get());
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ASSERT(splitTo);
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splitTreeToNode(splitTo, startBlock.get());
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for (n = startBlock->firstChild(); n; n = n->nextSibling()) {
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VisiblePosition beforeNodePosition(positionBeforeNode(n));
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if (!beforeNodePosition.isNull() && comparePositions(VisiblePosition(insertionPosition), beforeNodePosition) <= 0)
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break;
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}
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}
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moveRemainingSiblingsToNewParent(n, blockToInsert.get(), blockToInsert);
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}
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// Handle whitespace that occurs after the split
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if (positionAfterSplit.isNotNull()) {
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document().updateLayoutIgnorePendingStylesheets();
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if (!positionAfterSplit.isRenderedCharacter()) {
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// Clear out all whitespace and insert one non-breaking space
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ASSERT(!positionAfterSplit.containerNode()->renderer() || positionAfterSplit.containerNode()->renderer()->style()->collapseWhiteSpace());
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deleteInsignificantTextDownstream(positionAfterSplit);
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if (positionAfterSplit.deprecatedNode()->isTextNode())
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insertTextIntoNode(toText(positionAfterSplit.containerNode()), 0, nonBreakingSpaceString());
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}
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}
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setEndingSelection(VisibleSelection(firstPositionInNode(blockToInsert.get()), DOWNSTREAM, endingSelection().isDirectional()));
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}
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} // namespace blink
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