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

Source/core/editing/InsertListCommand.cpp

Index: Source/core/editing/InsertListCommand.cpp
diff --git a/Source/core/editing/InsertListCommand.cpp b/Source/core/editing/InsertListCommand.cpp
deleted file mode 100644
index 794080e9e339d385f2a96628bbadb5f3e20248d2..0000000000000000000000000000000000000000
--- a/Source/core/editing/InsertListCommand.cpp
+++ /dev/null
@@ -1,429 +0,0 @@
-/*
- * Copyright (C) 2006, 2010 Apple 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/InsertListCommand.h"
-
-#include "bindings/core/v8/ExceptionStatePlaceholder.h"
-#include "core/HTMLNames.h"
-#include "core/dom/Document.h"
-#include "core/dom/Element.h"
-#include "core/dom/ElementTraversal.h"
-#include "core/editing/EditingUtilities.h"
-#include "core/editing/VisibleUnits.h"
-#include "core/editing/iterators/TextIterator.h"
-#include "core/html/HTMLBRElement.h"
-#include "core/html/HTMLElement.h"
-#include "core/html/HTMLLIElement.h"
-#include "core/html/HTMLUListElement.h"
-
-namespace blink {
-
-using namespace HTMLNames;
-
-static Node* enclosingListChild(Node* node, Node* listNode)
-{
-    Node* listChild = enclosingListChild(node);
-    while (listChild && enclosingList(listChild) != listNode)
-        listChild = enclosingListChild(listChild->parentNode());
-    return listChild;
-}
-
-HTMLUListElement* InsertListCommand::fixOrphanedListChild(Node* node)
-{
-    RefPtrWillBeRawPtr<HTMLUListElement> listElement = createUnorderedListElement(document());
-    insertNodeBefore(listElement, node);
-    removeNode(node);
-    appendNode(node, listElement);
-    m_listElement = listElement;
-    return listElement.get();
-}
-
-PassRefPtrWillBeRawPtr<HTMLElement> InsertListCommand::mergeWithNeighboringLists(PassRefPtrWillBeRawPtr<HTMLElement> passedList)
-{
-    RefPtrWillBeRawPtr<HTMLElement> list = passedList;
-    Element* previousList = ElementTraversal::previousSibling(*list);
-    if (canMergeLists(previousList, list.get()))
-        mergeIdenticalElements(previousList, list);
-
-    if (!list)
-        return nullptr;
-
-    Element* nextSibling = ElementTraversal::nextSibling(*list);
-    if (!nextSibling || !nextSibling->isHTMLElement())
-        return list.release();
-
-    RefPtrWillBeRawPtr<HTMLElement> nextList = toHTMLElement(nextSibling);
-    if (canMergeLists(list.get(), nextList.get())) {
-        mergeIdenticalElements(list, nextList);
-        return nextList.release();
-    }
-    return list.release();
-}
-
-bool InsertListCommand::selectionHasListOfType(const VisibleSelection& selection, const HTMLQualifiedName& listTag)
-{
-    VisiblePosition start = selection.visibleStart();
-
-    if (!enclosingList(start.deepEquivalent().anchorNode()))
-        return false;
-
-    VisiblePosition end = startOfParagraph(selection.visibleEnd());
-    while (start.isNotNull() && start.deepEquivalent() != end.deepEquivalent()) {
-        HTMLElement* listElement = enclosingList(start.deepEquivalent().anchorNode());
-        if (!listElement || !listElement->hasTagName(listTag))
-            return false;
-        start = startOfNextParagraph(start);
-    }
-
-    return true;
-}
-
-InsertListCommand::InsertListCommand(Document& document, Type type)
-    : CompositeEditCommand(document), m_type(type)
-{
-}
-
-void InsertListCommand::doApply()
-{
-    if (!endingSelection().isNonOrphanedCaretOrRange())
-        return;
-
-    if (!endingSelection().rootEditableElement())
-        return;
-
-    VisiblePosition visibleEnd = endingSelection().visibleEnd();
-    VisiblePosition visibleStart = endingSelection().visibleStart();
-    // When a selection ends at the start of a paragraph, we rarely paint
-    // the selection gap before that paragraph, because there often is no gap.
-    // In a case like this, it's not obvious to the user that the selection
-    // ends "inside" that paragraph, so it would be confusing if InsertUn{Ordered}List
-    // operated on that paragraph.
-    // FIXME: We paint the gap before some paragraphs that are indented with left
-    // margin/padding, but not others.  We should make the gap painting more consistent and
-    // then use a left margin/padding rule here.
-    if (visibleEnd.deepEquivalent() != visibleStart.deepEquivalent() && isStartOfParagraph(visibleEnd, CanSkipOverEditingBoundary)) {
-        setEndingSelection(VisibleSelection(visibleStart, visibleEnd.previous(CannotCrossEditingBoundary), endingSelection().isDirectional()));
-        if (!endingSelection().rootEditableElement())
-            return;
-    }
-
-    const HTMLQualifiedName& listTag = (m_type == OrderedList) ? olTag : ulTag;
-    if (endingSelection().isRange()) {
-        bool forceListCreation = false;
-        VisibleSelection selection = selectionForParagraphIteration(endingSelection());
-        ASSERT(selection.isRange());
-        VisiblePosition startOfSelection = selection.visibleStart();
-        VisiblePosition endOfSelection = selection.visibleEnd();
-        VisiblePosition startOfLastParagraph = startOfParagraph(endOfSelection, CanSkipOverEditingBoundary);
-
-        RefPtrWillBeRawPtr<Range> currentSelection = endingSelection().firstRange();
-        RefPtrWillBeRawPtr<ContainerNode> scopeForStartOfSelection = nullptr;
-        RefPtrWillBeRawPtr<ContainerNode> scopeForEndOfSelection = nullptr;
-        // FIXME: This is an inefficient way to keep selection alive because
-        // indexForVisiblePosition walks from the beginning of the document to the
-        // endOfSelection everytime this code is executed. But not using index is hard
-        // because there are so many ways we can los eselection inside doApplyForSingleParagraph.
-        int indexForStartOfSelection = indexForVisiblePosition(startOfSelection, scopeForStartOfSelection);
-        int indexForEndOfSelection = indexForVisiblePosition(endOfSelection, scopeForEndOfSelection);
-
-        if (startOfParagraph(startOfSelection, CanSkipOverEditingBoundary).deepEquivalent() != startOfLastParagraph.deepEquivalent()) {
-            forceListCreation = !selectionHasListOfType(selection, listTag);
-
-            VisiblePosition startOfCurrentParagraph = startOfSelection;
-            while (startOfCurrentParagraph.isNotNull() && !inSameParagraph(startOfCurrentParagraph, startOfLastParagraph, CanCrossEditingBoundary)) {
-                // doApply() may operate on and remove the last paragraph of the selection from the document
-                // if it's in the same list item as startOfCurrentParagraph.  Return early to avoid an
-                // infinite loop and because there is no more work to be done.
-                // FIXME(<rdar://problem/5983974>): The endingSelection() may be incorrect here.  Compute
-                // the new location of endOfSelection and use it as the end of the new selection.
-                if (!startOfLastParagraph.deepEquivalent().inDocument())
-                    return;
-                setEndingSelection(startOfCurrentParagraph);
-
-                // Save and restore endOfSelection and startOfLastParagraph when necessary
-                // since moveParagraph and movePragraphWithClones can remove nodes.
-                if (!doApplyForSingleParagraph(forceListCreation, listTag, *currentSelection))
-                    break;
-                if (endOfSelection.isNull() || endOfSelection.isOrphan() || startOfLastParagraph.isNull() || startOfLastParagraph.isOrphan()) {
-                    endOfSelection = visiblePositionForIndex(indexForEndOfSelection, scopeForEndOfSelection.get());
-                    // If endOfSelection is null, then some contents have been deleted from the document.
-                    // This should never happen and if it did, exit early immediately because we've lost the loop invariant.
-                    ASSERT(endOfSelection.isNotNull());
-                    if (endOfSelection.isNull())
-                        return;
-                    startOfLastParagraph = startOfParagraph(endOfSelection, CanSkipOverEditingBoundary);
-                }
-
-                startOfCurrentParagraph = startOfNextParagraph(endingSelection().visibleStart());
-            }
-            setEndingSelection(endOfSelection);
-        }
-        doApplyForSingleParagraph(forceListCreation, listTag, *currentSelection);
-        // Fetch the end of the selection, for the reason mentioned above.
-        if (endOfSelection.isNull() || endOfSelection.isOrphan()) {
-            endOfSelection = visiblePositionForIndex(indexForEndOfSelection, scopeForEndOfSelection.get());
-            if (endOfSelection.isNull())
-                return;
-        }
-        if (startOfSelection.isNull() || startOfSelection.isOrphan()) {
-            startOfSelection = visiblePositionForIndex(indexForStartOfSelection, scopeForStartOfSelection.get());
-            if (startOfSelection.isNull())
-                return;
-        }
-        setEndingSelection(VisibleSelection(startOfSelection, endOfSelection, endingSelection().isDirectional()));
-        return;
-    }
-
-    ASSERT(endingSelection().firstRange());
-    doApplyForSingleParagraph(false, listTag, *endingSelection().firstRange());
-}
-
-bool InsertListCommand::doApplyForSingleParagraph(bool forceCreateList, const HTMLQualifiedName& listTag, Range& currentSelection)
-{
-    // FIXME: This will produce unexpected results for a selection that starts just before a
-    // table and ends inside the first cell, selectionForParagraphIteration should probably
-    // be renamed and deployed inside setEndingSelection().
-    Node* selectionNode = endingSelection().start().anchorNode();
-    Node* listChildNode = enclosingListChild(selectionNode);
-    bool switchListType = false;
-    if (listChildNode) {
-        if (!listChildNode->parentNode()->hasEditableStyle())
-            return false;
-        // Remove the list child.
-        RefPtrWillBeRawPtr<HTMLElement> listElement = enclosingList(listChildNode);
-        if (!listElement) {
-            listElement = fixOrphanedListChild(listChildNode);
-            listElement = mergeWithNeighboringLists(listElement);
-        }
-        if (!listElement->hasTagName(listTag)) {
-            // |listChildNode| will be removed from the list and a list of type
-            // |m_type| will be created.
-            switchListType = true;
-        }
-
-        // If the list is of the desired type, and we are not removing the list,
-        // then exit early.
-        if (!switchListType && forceCreateList)
-            return true;
-
-        // If the entire list is selected, then convert the whole list.
-        if (switchListType && isNodeVisiblyContainedWithin(*listElement, currentSelection)) {
-            bool rangeStartIsInList = visiblePositionBeforeNode(*listElement).deepEquivalent() == VisiblePosition(currentSelection.startPosition()).deepEquivalent();
-            bool rangeEndIsInList = visiblePositionAfterNode(*listElement).deepEquivalent() == VisiblePosition(currentSelection.endPosition()).deepEquivalent();
-
-            RefPtrWillBeRawPtr<HTMLElement> newList = createHTMLElement(document(), listTag);
-            insertNodeBefore(newList, listElement);
-
-            Node* firstChildInList = enclosingListChild(VisiblePosition(firstPositionInNode(listElement.get())).deepEquivalent().anchorNode(), listElement.get());
-            Element* outerBlock = firstChildInList && isBlockFlowElement(*firstChildInList) ? toElement(firstChildInList) : listElement.get();
-
-            moveParagraphWithClones(VisiblePosition(firstPositionInNode(listElement.get())), VisiblePosition(lastPositionInNode(listElement.get())), newList.get(), outerBlock);
-
-            // Manually remove listNode because moveParagraphWithClones sometimes leaves it behind in the document.
-            // See the bug 33668 and editing/execCommand/insert-list-orphaned-item-with-nested-lists.html.
-            // FIXME: This might be a bug in moveParagraphWithClones or deleteSelection.
-            if (listElement && listElement->inDocument())
-                removeNode(listElement);
-
-            newList = mergeWithNeighboringLists(newList);
-
-            // Restore the start and the end of current selection if they started inside listNode
-            // because moveParagraphWithClones could have removed them.
-            if (rangeStartIsInList && newList)
-                currentSelection.setStart(newList, 0, IGNORE_EXCEPTION);
-            if (rangeEndIsInList && newList)
-                currentSelection.setEnd(newList, lastOffsetInNode(newList.get()), IGNORE_EXCEPTION);
-
-            setEndingSelection(VisiblePosition(firstPositionInNode(newList.get())));
-
-            return true;
-        }
-
-        unlistifyParagraph(endingSelection().visibleStart(), listElement.get(), listChildNode);
-    }
-
-    if (!listChildNode || switchListType || forceCreateList)
-        m_listElement = listifyParagraph(endingSelection().visibleStart(), listTag);
-
-    return true;
-}
-
-void InsertListCommand::unlistifyParagraph(const VisiblePosition& originalStart, HTMLElement* listElement, Node* listChildNode)
-{
-    Node* nextListChild;
-    Node* previousListChild;
-    VisiblePosition start;
-    VisiblePosition end;
-    ASSERT(listChildNode);
-    if (isHTMLLIElement(*listChildNode)) {
-        start = VisiblePosition(firstPositionInNode(listChildNode));
-        end = VisiblePosition(lastPositionInNode(listChildNode));
-        nextListChild = listChildNode->nextSibling();
-        previousListChild = listChildNode->previousSibling();
-    } else {
-        // A paragraph is visually a list item minus a list marker.  The paragraph will be moved.
-        start = startOfParagraph(originalStart, CanSkipOverEditingBoundary);
-        end = endOfParagraph(start, CanSkipOverEditingBoundary);
-        nextListChild = enclosingListChild(end.next().deepEquivalent().anchorNode(), listElement);
-        ASSERT(nextListChild != listChildNode);
-        previousListChild = enclosingListChild(start.previous().deepEquivalent().anchorNode(), listElement);
-        ASSERT(previousListChild != listChildNode);
-    }
-    // When removing a list, we must always create a placeholder to act as a point of insertion
-    // for the list content being removed.
-    RefPtrWillBeRawPtr<HTMLBRElement> placeholder = createBreakElement(document());
-    RefPtrWillBeRawPtr<HTMLElement> elementToInsert = placeholder;
-    // If the content of the list item will be moved into another list, put it in a list item
-    // so that we don't create an orphaned list child.
-    if (enclosingList(listElement)) {
-        elementToInsert = createListItemElement(document());
-        appendNode(placeholder, elementToInsert);
-    }
-
-    if (nextListChild && previousListChild) {
-        // We want to pull listChildNode out of listNode, and place it before nextListChild
-        // and after previousListChild, so we split listNode and insert it between the two lists.
-        // But to split listNode, we must first split ancestors of listChildNode between it and listNode,
-        // if any exist.
-        // FIXME: We appear to split at nextListChild as opposed to listChildNode so that when we remove
-        // listChildNode below in moveParagraphs, previousListChild will be removed along with it if it is
-        // unrendered. But we ought to remove nextListChild too, if it is unrendered.
-        splitElement(listElement, splitTreeToNode(nextListChild, listElement));
-        insertNodeBefore(elementToInsert, listElement);
-    } else if (nextListChild || listChildNode->parentNode() != listElement) {
-        // Just because listChildNode has no previousListChild doesn't mean there isn't any content
-        // in listNode that comes before listChildNode, as listChildNode could have ancestors
-        // between it and listNode. So, we split up to listNode before inserting the placeholder
-        // where we're about to move listChildNode to.
-        if (listChildNode->parentNode() != listElement)
-            splitElement(listElement, splitTreeToNode(listChildNode, listElement).get());
-        insertNodeBefore(elementToInsert, listElement);
-    } else {
-        insertNodeAfter(elementToInsert, listElement);
-    }
-
-    VisiblePosition insertionPoint = VisiblePosition(positionBeforeNode(placeholder.get()));
-    moveParagraphs(start, end, insertionPoint, /* preserveSelection */ true, /* preserveStyle */ true, listChildNode);
-}
-
-static HTMLElement* adjacentEnclosingList(const VisiblePosition& pos, const VisiblePosition& adjacentPos, const HTMLQualifiedName& listTag)
-{
-    HTMLElement* listElement = outermostEnclosingList(adjacentPos.deepEquivalent().anchorNode());
-
-    if (!listElement)
-        return 0;
-
-    Element* previousCell = enclosingTableCell(pos.deepEquivalent());
-    Element* currentCell = enclosingTableCell(adjacentPos.deepEquivalent());
-
-    if (!listElement->hasTagName(listTag)
-        || listElement->contains(pos.deepEquivalent().anchorNode())
-        || previousCell != currentCell
-        || enclosingList(listElement) != enclosingList(pos.deepEquivalent().anchorNode()))
-        return 0;
-
-    return listElement;
-}
-
-PassRefPtrWillBeRawPtr<HTMLElement> InsertListCommand::listifyParagraph(const VisiblePosition& originalStart, const HTMLQualifiedName& listTag)
-{
-    VisiblePosition start = startOfParagraph(originalStart, CanSkipOverEditingBoundary);
-    VisiblePosition end = endOfParagraph(start, CanSkipOverEditingBoundary);
-
-    if (start.isNull() || end.isNull())
-        return nullptr;
-
-    // Check for adjoining lists.
-    RefPtrWillBeRawPtr<HTMLElement> listItemElement = createListItemElement(document());
-    RefPtrWillBeRawPtr<HTMLBRElement> placeholder = createBreakElement(document());
-    appendNode(placeholder, listItemElement);
-
-    // Place list item into adjoining lists.
-    HTMLElement* previousList = adjacentEnclosingList(start, start.previous(CannotCrossEditingBoundary), listTag);
-    HTMLElement* nextList = adjacentEnclosingList(start, end.next(CannotCrossEditingBoundary), listTag);
-    RefPtrWillBeRawPtr<HTMLElement> listElement = nullptr;
-    if (previousList) {
-        appendNode(listItemElement, previousList);
-    } else if (nextList) {
-        insertNodeAt(listItemElement, positionBeforeNode(nextList));
-    } else {
-        // Create the list.
-        listElement = createHTMLElement(document(), listTag);
-        appendNode(listItemElement, listElement);
-
-        if (start.deepEquivalent() == end.deepEquivalent() && isBlock(start.deepEquivalent().anchorNode())) {
-            // Inserting the list into an empty paragraph that isn't held open
-            // by a br or a '\n', will invalidate start and end.  Insert
-            // a placeholder and then recompute start and end.
-            RefPtrWillBeRawPtr<HTMLBRElement> placeholder = insertBlockPlaceholder(start.deepEquivalent());
-            start = VisiblePosition(positionBeforeNode(placeholder.get()));
-            end = start;
-        }
-
-        // Insert the list at a position visually equivalent to start of the
-        // paragraph that is being moved into the list.
-        // Try to avoid inserting it somewhere where it will be surrounded by
-        // inline ancestors of start, since it is easier for editing to produce
-        // clean markup when inline elements are pushed down as far as possible.
-        Position insertionPos(start.deepEquivalent().upstream());
-        // Also avoid the containing list item.
-        Node* listChild = enclosingListChild(insertionPos.anchorNode());
-        if (isHTMLLIElement(listChild))
-            insertionPos = positionInParentBeforeNode(*listChild);
-
-        insertNodeAt(listElement, insertionPos);
-
-        // We inserted the list at the start of the content we're about to move
-        // Update the start of content, so we don't try to move the list into itself.  bug 19066
-        // Layout is necessary since start's node's inline layoutObjects may have been destroyed by the insertion
-        // The end of the content may have changed after the insertion and layout so update it as well.
-        if (insertionPos == start.deepEquivalent())
-            start = originalStart;
-    }
-
-    // Inserting list element and list item list may change start of pargraph
-    // to move. We calculate start of paragraph again.
-    document().updateLayoutIgnorePendingStylesheets();
-    start = startOfParagraph(start, CanSkipOverEditingBoundary);
-    end = endOfParagraph(start, CanSkipOverEditingBoundary);
-    moveParagraph(start, end, VisiblePosition(positionBeforeNode(placeholder.get())), true);
-
-    if (listElement)
-        return mergeWithNeighboringLists(listElement);
-
-    if (canMergeLists(previousList, nextList))
-        mergeIdenticalElements(previousList, nextList);
-
-    return listElement;
-}
-
-DEFINE_TRACE(InsertListCommand)
-{
-    visitor->trace(m_listElement);
-    CompositeEditCommand::trace(visitor);
-}
-
-}