Move execCommand related files in core/editing/ related files into core/editing/commands/

Source/core/editing/InsertParagraphSeparatorCommand.cpp

Index: Source/core/editing/InsertParagraphSeparatorCommand.cpp
diff --git a/Source/core/editing/InsertParagraphSeparatorCommand.cpp b/Source/core/editing/InsertParagraphSeparatorCommand.cpp
deleted file mode 100644
index 5e0bbe51f45dc4c8f68df03f372323cf2c2c1492..0000000000000000000000000000000000000000
--- a/Source/core/editing/InsertParagraphSeparatorCommand.cpp
+++ /dev/null
@@ -1,439 +0,0 @@
-/*
- * Copyright (C) 2005, 2006 Apple Computer, Inc.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "core/editing/InsertParagraphSeparatorCommand.h"
-
-#include "core/HTMLNames.h"
-#include "core/dom/Document.h"
-#include "core/dom/NodeTraversal.h"
-#include "core/dom/Text.h"
-#include "core/editing/EditingStyle.h"
-#include "core/editing/EditingUtilities.h"
-#include "core/editing/InsertLineBreakCommand.h"
-#include "core/editing/VisibleUnits.h"
-#include "core/html/HTMLBRElement.h"
-#include "core/html/HTMLElement.h"
-#include "core/html/HTMLQuoteElement.h"
-#include "core/layout/LayoutObject.h"
-#include "core/layout/LayoutText.h"
-
-namespace blink {
-
-using namespace HTMLNames;
-
-// When inserting a new line, we want to avoid nesting empty divs if we can.  Otherwise, when
-// pasting, it's easy to have each new line be a div deeper than the previous.  E.g., in the case
-// below, we want to insert at ^ instead of |.
-// <div>foo<div>bar</div>|</div>^
-static Element* highestVisuallyEquivalentDivBelowRoot(Element* startBlock)
-{
-    Element* curBlock = startBlock;
-    // We don't want to return a root node (if it happens to be a div, e.g., in a document fragment) because there are no
-    // siblings for us to append to.
-    while (!curBlock->nextSibling() && isHTMLDivElement(*curBlock->parentElement()) && curBlock->parentElement()->parentElement()) {
-        if (curBlock->parentElement()->hasAttributes())
-            break;
-        curBlock = curBlock->parentElement();
-    }
-    return curBlock;
-}
-
-InsertParagraphSeparatorCommand::InsertParagraphSeparatorCommand(Document& document, bool mustUseDefaultParagraphElement, bool pasteBlockquoteIntoUnquotedArea)
-    : CompositeEditCommand(document)
-    , m_mustUseDefaultParagraphElement(mustUseDefaultParagraphElement)
-    , m_pasteBlockquoteIntoUnquotedArea(pasteBlockquoteIntoUnquotedArea)
-{
-}
-
-bool InsertParagraphSeparatorCommand::preservesTypingStyle() const
-{
-    return true;
-}
-
-void InsertParagraphSeparatorCommand::calculateStyleBeforeInsertion(const Position &pos)
-{
-    // It is only important to set a style to apply later if we're at the boundaries of
-    // a paragraph. Otherwise, content that is moved as part of the work of the command
-    // will lend their styles to the new paragraph without any extra work needed.
-    VisiblePosition visiblePos(pos, VP_DEFAULT_AFFINITY);
-    if (!isStartOfParagraph(visiblePos) && !isEndOfParagraph(visiblePos))
-        return;
-
-    ASSERT(pos.isNotNull());
-    m_style = EditingStyle::create(pos);
-    m_style->mergeTypingStyle(pos.document());
-}
-
-void InsertParagraphSeparatorCommand::applyStyleAfterInsertion(Element* originalEnclosingBlock)
-{
-    // Not only do we break out of header tags, but we also do not preserve the typing style,
-    // in order to match other browsers.
-    if (originalEnclosingBlock->hasTagName(h1Tag) ||
-        originalEnclosingBlock->hasTagName(h2Tag) ||
-        originalEnclosingBlock->hasTagName(h3Tag) ||
-        originalEnclosingBlock->hasTagName(h4Tag) ||
-        originalEnclosingBlock->hasTagName(h5Tag))
-        return;
-
-    if (!m_style)
-        return;
-
-    m_style->prepareToApplyAt(endingSelection().start());
-    if (!m_style->isEmpty())
-        applyStyle(m_style.get());
-}
-
-bool InsertParagraphSeparatorCommand::shouldUseDefaultParagraphElement(Element* enclosingBlock) const
-{
-    if (m_mustUseDefaultParagraphElement)
-        return true;
-
-    // Assumes that if there was a range selection, it was already deleted.
-    if (!isEndOfBlock(endingSelection().visibleStart()))
-        return false;
-
-    return enclosingBlock->hasTagName(h1Tag) ||
-           enclosingBlock->hasTagName(h2Tag) ||
-           enclosingBlock->hasTagName(h3Tag) ||
-           enclosingBlock->hasTagName(h4Tag) ||
-           enclosingBlock->hasTagName(h5Tag);
-}
-
-void InsertParagraphSeparatorCommand::getAncestorsInsideBlock(const Node* insertionNode, Element* outerBlock, WillBeHeapVector<RefPtrWillBeMember<Element>>& ancestors)
-{
-    ancestors.clear();
-
-    // Build up list of ancestors elements between the insertion node and the outer block.
-    if (insertionNode != outerBlock) {
-        for (Element* n = insertionNode->parentElement(); n && n != outerBlock; n = n->parentElement())
-            ancestors.append(n);
-    }
-}
-
-PassRefPtrWillBeRawPtr<Element> InsertParagraphSeparatorCommand::cloneHierarchyUnderNewBlock(const WillBeHeapVector<RefPtrWillBeMember<Element>>& ancestors, PassRefPtrWillBeRawPtr<Element> blockToInsert)
-{
-    // Make clones of ancestors in between the start node and the start block.
-    RefPtrWillBeRawPtr<Element> parent = blockToInsert;
-    for (size_t i = ancestors.size(); i != 0; --i) {
-        RefPtrWillBeRawPtr<Element> child = ancestors[i - 1]->cloneElementWithoutChildren();
-        // It should always be okay to remove id from the cloned elements, since the originals are not deleted.
-        child->removeAttribute(idAttr);
-        appendNode(child, parent);
-        parent = child.release();
-    }
-
-    return parent.release();
-}
-
-void InsertParagraphSeparatorCommand::doApply()
-{
-    if (!endingSelection().isNonOrphanedCaretOrRange())
-        return;
-
-    Position insertionPosition = endingSelection().start();
-
-    EAffinity affinity = endingSelection().affinity();
-
-    // Delete the current selection.
-    if (endingSelection().isRange()) {
-        calculateStyleBeforeInsertion(insertionPosition);
-        deleteSelection(false, true);
-        insertionPosition = endingSelection().start();
-        affinity = endingSelection().affinity();
-    }
-
-    // FIXME: The parentAnchoredEquivalent conversion needs to be moved into enclosingBlock.
-    RefPtrWillBeRawPtr<Element> startBlock = enclosingBlock(insertionPosition.parentAnchoredEquivalent().computeContainerNode());
-    Node* listChildNode = enclosingListChild(insertionPosition.parentAnchoredEquivalent().computeContainerNode());
-    RefPtrWillBeRawPtr<HTMLElement> listChild = listChildNode && listChildNode->isHTMLElement() ? toHTMLElement(listChildNode) : 0;
-    Position canonicalPos = VisiblePosition(insertionPosition).deepEquivalent();
-    if (!startBlock
-        || !startBlock->nonShadowBoundaryParentNode()
-        || isTableCell(startBlock.get())
-        || isHTMLFormElement(*startBlock)
-        // 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
-        || (!canonicalPos.isNull() && isRenderedTableElement(canonicalPos.anchorNode()))
-        || (!canonicalPos.isNull() && isHTMLHRElement(*canonicalPos.anchorNode()))) {
-        applyCommandToComposite(InsertLineBreakCommand::create(document()));
-        return;
-    }
-
-    // Use the leftmost candidate.
-    insertionPosition = insertionPosition.upstream();
-    if (!insertionPosition.isCandidate())
-        insertionPosition = insertionPosition.downstream();
-
-    // Adjust the insertion position after the delete
-    insertionPosition = positionAvoidingSpecialElementBoundary(insertionPosition);
-    VisiblePosition visiblePos(insertionPosition, affinity);
-    calculateStyleBeforeInsertion(insertionPosition);
-
-    //---------------------------------------------------------------------
-    // Handle special case of typing return on an empty list item
-    if (breakOutOfEmptyListItem())
-        return;
-
-    //---------------------------------------------------------------------
-    // Prepare for more general cases.
-
-    bool isFirstInBlock = isStartOfBlock(visiblePos);
-    bool isLastInBlock = isEndOfBlock(visiblePos);
-    bool nestNewBlock = false;
-
-    // Create block to be inserted.
-    RefPtrWillBeRawPtr<Element> blockToInsert = nullptr;
-    if (startBlock->isRootEditableElement()) {
-        blockToInsert = createDefaultParagraphElement(document());
-        nestNewBlock = true;
-    } else if (shouldUseDefaultParagraphElement(startBlock.get())) {
-        blockToInsert = createDefaultParagraphElement(document());
-    } else {
-        blockToInsert = startBlock->cloneElementWithoutChildren();
-    }
-
-    //---------------------------------------------------------------------
-    // Handle case when position is in the last visible position in its block,
-    // including when the block is empty.
-    if (isLastInBlock) {
-        if (nestNewBlock) {
-            if (isFirstInBlock && !lineBreakExistsAtVisiblePosition(visiblePos)) {
-                // The block is empty.  Create an empty block to
-                // represent the paragraph that we're leaving.
-                RefPtrWillBeRawPtr<HTMLElement> extraBlock = createDefaultParagraphElement(document());
-                appendNode(extraBlock, startBlock);
-                appendBlockPlaceholder(extraBlock);
-            }
-            appendNode(blockToInsert, startBlock);
-        } else {
-            // We can get here if we pasted a copied portion of a blockquote with a newline at the end and are trying to paste it
-            // into an unquoted area. We then don't want the newline within the blockquote or else it will also be quoted.
-            if (m_pasteBlockquoteIntoUnquotedArea) {
-                if (HTMLQuoteElement* highestBlockquote = toHTMLQuoteElement(highestEnclosingNodeOfType(canonicalPos, &isMailHTMLBlockquoteElement)))
-                    startBlock = highestBlockquote;
-            }
-
-            if (listChild && listChild != startBlock) {
-                RefPtrWillBeRawPtr<Element> listChildToInsert = listChild->cloneElementWithoutChildren();
-                appendNode(blockToInsert, listChildToInsert.get());
-                insertNodeAfter(listChildToInsert.get(), listChild);
-            } else {
-                // Most of the time we want to stay at the nesting level of the startBlock (e.g., when nesting within lists). However,
-                // for div nodes, this can result in nested div tags that are hard to break out of.
-                Element* siblingElement = startBlock.get();
-                if (isHTMLDivElement(*blockToInsert))
-                    siblingElement = highestVisuallyEquivalentDivBelowRoot(startBlock.get());
-                insertNodeAfter(blockToInsert, siblingElement);
-            }
-        }
-
-        // Recreate the same structure in the new paragraph.
-
-        WillBeHeapVector<RefPtrWillBeMember<Element>> ancestors;
-        getAncestorsInsideBlock(positionOutsideTabSpan(insertionPosition).anchorNode(), startBlock.get(), ancestors);
-        RefPtrWillBeRawPtr<Element> parent = cloneHierarchyUnderNewBlock(ancestors, blockToInsert);
-
-        appendBlockPlaceholder(parent);
-
-        setEndingSelection(VisibleSelection(firstPositionInNode(parent.get()), DOWNSTREAM, endingSelection().isDirectional()));
-        return;
-    }
-
-
-    //---------------------------------------------------------------------
-    // Handle case when position is in the first visible position in its block, and
-    // similar case where previous position is in another, presumeably nested, block.
-    if (isFirstInBlock || !inSameBlock(visiblePos, visiblePos.previous())) {
-        Node* refNode = nullptr;
-        insertionPosition = positionOutsideTabSpan(insertionPosition);
-
-        if (isFirstInBlock && !nestNewBlock) {
-            if (listChild && listChild != startBlock) {
-                RefPtrWillBeRawPtr<Element> listChildToInsert = listChild->cloneElementWithoutChildren();
-                appendNode(blockToInsert, listChildToInsert.get());
-                insertNodeBefore(listChildToInsert.get(), listChild);
-            } else {
-                refNode = startBlock.get();
-            }
-        } else if (isFirstInBlock && nestNewBlock) {
-            // startBlock should always have children, otherwise isLastInBlock would be true and it's handled above.
-            ASSERT(startBlock->hasChildren());
-            refNode = startBlock->firstChild();
-        } else if (insertionPosition.anchorNode() == startBlock && nestNewBlock) {
-            refNode = NodeTraversal::childAt(*startBlock, insertionPosition.computeEditingOffset());
-            ASSERT(refNode); // must be true or we'd be in the end of block case
-        } else {
-            refNode = insertionPosition.anchorNode();
-        }
-
-        // find ending selection position easily before inserting the paragraph
-        insertionPosition = insertionPosition.downstream();
-
-        if (refNode)
-            insertNodeBefore(blockToInsert, refNode);
-
-        // Recreate the same structure in the new paragraph.
-
-        WillBeHeapVector<RefPtrWillBeMember<Element>> ancestors;
-        getAncestorsInsideBlock(positionAvoidingSpecialElementBoundary(positionOutsideTabSpan(insertionPosition)).anchorNode(), startBlock.get(), ancestors);
-
-        appendBlockPlaceholder(cloneHierarchyUnderNewBlock(ancestors, blockToInsert));
-
-        // In this case, we need to set the new ending selection.
-        setEndingSelection(VisibleSelection(insertionPosition, DOWNSTREAM, endingSelection().isDirectional()));
-        return;
-    }
-
-    //---------------------------------------------------------------------
-    // Handle the (more complicated) general case,
-
-    // All of the content in the current block after visiblePos is
-    // about to be wrapped in a new paragraph element.  Add a br before
-    // it if visiblePos is at the start of a paragraph so that the
-    // content will move down a line.
-    if (isStartOfParagraph(visiblePos)) {
-        RefPtrWillBeRawPtr<HTMLBRElement> br = createBreakElement(document());
-        insertNodeAt(br.get(), insertionPosition);
-        insertionPosition = positionInParentAfterNode(*br);
-        // If the insertion point is a break element, there is nothing else
-        // we need to do.
-        if (visiblePos.deepEquivalent().anchorNode()->layoutObject()->isBR()) {
-            setEndingSelection(VisibleSelection(insertionPosition, DOWNSTREAM, endingSelection().isDirectional()));
-            return;
-        }
-    }
-
-    // Move downstream. Typing style code will take care of carrying along the
-    // style of the upstream position.
-    insertionPosition = insertionPosition.downstream();
-
-    // At this point, the insertionPosition's node could be a container, and we want to make sure we include
-    // all of the correct nodes when building the ancestor list.  So this needs to be the deepest representation of the position
-    // before we walk the DOM tree.
-    insertionPosition = positionOutsideTabSpan(VisiblePosition(insertionPosition).deepEquivalent());
-
-    // If the returned position lies either at the end or at the start of an element that is ignored by editing
-    // we should move to its upstream or downstream position.
-    if (editingIgnoresContent(insertionPosition.anchorNode())) {
-        if (insertionPosition.atLastEditingPositionForNode())
-            insertionPosition = insertionPosition.downstream();
-        else if (insertionPosition.atFirstEditingPositionForNode())
-            insertionPosition = insertionPosition.upstream();
-    }
-
-    // Make sure we do not cause a rendered space to become unrendered.
-    // FIXME: We need the affinity for pos, but pos.downstream() does not give it
-    Position leadingWhitespace = leadingWhitespacePosition(insertionPosition, VP_DEFAULT_AFFINITY);
-    // FIXME: leadingWhitespacePosition is returning the position before preserved newlines for positions
-    // after the preserved newline, causing the newline to be turned into a nbsp.
-    if (leadingWhitespace.isNotNull() && leadingWhitespace.anchorNode()->isTextNode()) {
-        Text* textNode = toText(leadingWhitespace.anchorNode());
-        ASSERT(!textNode->layoutObject() || textNode->layoutObject()->style()->collapseWhiteSpace());
-        replaceTextInNodePreservingMarkers(textNode, leadingWhitespace.computeOffsetInContainerNode(), 1, nonBreakingSpaceString());
-    }
-
-    // Split at pos if in the middle of a text node.
-    Position positionAfterSplit;
-    if (insertionPosition.isOffsetInAnchor() && insertionPosition.computeContainerNode()->isTextNode()) {
-        RefPtrWillBeRawPtr<Text> textNode = toText(insertionPosition.computeContainerNode());
-        int textOffset = insertionPosition.offsetInContainerNode();
-        bool atEnd = static_cast<unsigned>(textOffset) >= textNode->length();
-        if (textOffset > 0 && !atEnd) {
-            splitTextNode(textNode, textOffset);
-            positionAfterSplit = firstPositionInNode(textNode.get());
-            insertionPosition = Position(textNode->previousSibling(), textOffset);
-            visiblePos = VisiblePosition(insertionPosition);
-        }
-    }
-
-    // If we got detached due to mutation events, just bail out.
-    if (!startBlock->parentNode())
-        return;
-
-    // Put the added block in the tree.
-    if (nestNewBlock) {
-        appendNode(blockToInsert.get(), startBlock);
-    } else if (listChild && listChild != startBlock) {
-        RefPtrWillBeRawPtr<Element> listChildToInsert = listChild->cloneElementWithoutChildren();
-        appendNode(blockToInsert.get(), listChildToInsert.get());
-        insertNodeAfter(listChildToInsert.get(), listChild);
-    } else {
-        insertNodeAfter(blockToInsert.get(), startBlock);
-    }
-
-    document().updateLayoutIgnorePendingStylesheets();
-
-    // If the paragraph separator was inserted at the end of a paragraph, an empty line must be
-    // created.  All of the nodes, starting at visiblePos, are about to be added to the new paragraph
-    // element.  If the first node to be inserted won't be one that will hold an empty line open, add a br.
-    if (isEndOfParagraph(visiblePos) && !lineBreakExistsAtVisiblePosition(visiblePos))
-        appendNode(createBreakElement(document()).get(), blockToInsert.get());
-
-    // Move the start node and the siblings of the start node.
-    if (VisiblePosition(insertionPosition).deepEquivalent() != VisiblePosition(positionBeforeNode(blockToInsert.get())).deepEquivalent()) {
-        Node* n;
-        if (insertionPosition.computeContainerNode() == startBlock)
-            n = insertionPosition.computeNodeAfterPosition();
-        else {
-            Node* splitTo = insertionPosition.computeContainerNode();
-            if (splitTo->isTextNode() && insertionPosition.offsetInContainerNode() >= caretMaxOffset(splitTo))
-                splitTo = NodeTraversal::next(*splitTo, startBlock.get());
-            ASSERT(splitTo);
-            splitTreeToNode(splitTo, startBlock.get());
-
-            for (n = startBlock->firstChild(); n; n = n->nextSibling()) {
-                VisiblePosition beforeNodePosition(positionBeforeNode(n));
-                if (!beforeNodePosition.isNull() && comparePositions(VisiblePosition(insertionPosition), beforeNodePosition) <= 0)
-                    break;
-            }
-        }
-
-        moveRemainingSiblingsToNewParent(n, blockToInsert.get(), blockToInsert);
-    }
-
-    // Handle whitespace that occurs after the split
-    if (positionAfterSplit.isNotNull()) {
-        document().updateLayoutIgnorePendingStylesheets();
-        if (!positionAfterSplit.isRenderedCharacter()) {
-            // Clear out all whitespace and insert one non-breaking space
-            ASSERT(!positionAfterSplit.computeContainerNode()->layoutObject() || positionAfterSplit.computeContainerNode()->layoutObject()->style()->collapseWhiteSpace());
-            deleteInsignificantTextDownstream(positionAfterSplit);
-            if (positionAfterSplit.anchorNode()->isTextNode())
-                insertTextIntoNode(toText(positionAfterSplit.computeContainerNode()), 0, nonBreakingSpaceString());
-        }
-    }
-
-    setEndingSelection(VisibleSelection(firstPositionInNode(blockToInsert.get()), DOWNSTREAM, endingSelection().isDirectional()));
-    applyStyleAfterInsertion(startBlock.get());
-}
-
-DEFINE_TRACE(InsertParagraphSeparatorCommand)
-{
-    visitor->trace(m_style);
-    CompositeEditCommand::trace(visitor);
-}
-
-
-} // namespace blink