| /* |
| * Copyright (C) 2006, 2008 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 (IndentOutdentCommandINCLUDING, 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/IndentOutdentCommand.h" |
| |
| #include "core/HTMLNames.h" |
| #include "core/dom/Document.h" |
| #include "core/dom/ElementTraversal.h" |
| #include "core/editing/InsertListCommand.h" |
| #include "core/editing/VisibleUnits.h" |
| #include "core/editing/htmlediting.h" |
| #include "core/html/HTMLBRElement.h" |
| #include "core/html/HTMLElement.h" |
| #include "core/layout/LayoutObject.h" |
| |
| namespace blink { |
| |
| using namespace HTMLNames; |
| |
| static bool isHTMLListOrBlockquoteElement(const Node* node) |
| { |
| if (!node || !node->isHTMLElement()) |
| return false; |
| const HTMLElement& element = toHTMLElement(*node); |
| return isHTMLUListElement(element) || isHTMLOListElement(element) || element.hasTagName(blockquoteTag); |
| } |
| |
| IndentOutdentCommand::IndentOutdentCommand(Document& document, EIndentType typeOfAction) |
| : ApplyBlockElementCommand(document, blockquoteTag, "margin: 0 0 0 40px; border: none; padding: 0px;") |
| , m_typeOfAction(typeOfAction) |
| { |
| } |
| |
| bool IndentOutdentCommand::tryIndentingAsListItem(const Position& start, const Position& end) |
| { |
| // If our selection is not inside a list, bail out. |
| RefPtrWillBeRawPtr<Node> lastNodeInSelectedParagraph = start.deprecatedNode(); |
| RefPtrWillBeRawPtr<HTMLElement> listElement = enclosingList(lastNodeInSelectedParagraph.get()); |
| if (!listElement) |
| return false; |
| |
| // Find the block that we want to indent. If it's not a list item (e.g., a div inside a list item), we bail out. |
| RefPtrWillBeRawPtr<Element> selectedListItem = enclosingBlock(lastNodeInSelectedParagraph.get()); |
| |
| // FIXME: we need to deal with the case where there is no li (malformed HTML) |
| if (!isHTMLLIElement(selectedListItem)) |
| return false; |
| |
| // FIXME: previousElementSibling does not ignore non-rendered content like <span></span>. Should we? |
| RefPtrWillBeRawPtr<Element> previousList = ElementTraversal::previousSibling(*selectedListItem); |
| RefPtrWillBeRawPtr<Element> nextList = ElementTraversal::nextSibling(*selectedListItem); |
| |
| // We should calculate visible range in list item because inserting new |
| // list element will change visibility of list item, e.g. :first-child |
| // CSS selector. |
| RefPtrWillBeRawPtr<HTMLElement> newList = toHTMLElement(document().createElement(listElement->tagQName(), false).get()); |
| insertNodeBefore(newList, selectedListItem.get()); |
| |
| // We should clone all the children of the list item for indenting purposes. However, in case the current |
| // selection does not encompass all its children, we need to explicitally handle the same. The original |
| // list item too would require proper deletion in that case. |
| if (end.anchorNode() == selectedListItem.get() || end.anchorNode()->isDescendantOf(selectedListItem->lastChild())) { |
| moveParagraphWithClones(VisiblePosition(start), VisiblePosition(end), newList.get(), selectedListItem.get()); |
| } else { |
| moveParagraphWithClones(VisiblePosition(start), VisiblePosition(positionAfterNode(selectedListItem->lastChild())), newList.get(), selectedListItem.get()); |
| removeNode(selectedListItem.get()); |
| } |
| |
| if (canMergeLists(previousList.get(), newList.get())) |
| mergeIdenticalElements(previousList.get(), newList.get()); |
| if (canMergeLists(newList.get(), nextList.get())) |
| mergeIdenticalElements(newList.get(), nextList.get()); |
| |
| return true; |
| } |
| |
| void IndentOutdentCommand::indentIntoBlockquote(const Position& start, const Position& end, RefPtrWillBeRawPtr<HTMLElement>& targetBlockquote) |
| { |
| Element* enclosingCell = toElement(enclosingNodeOfType(start, &isTableCell)); |
| Element* elementToSplitTo; |
| if (enclosingCell) |
| elementToSplitTo = enclosingCell; |
| else if (enclosingList(start.containerNode())) |
| elementToSplitTo = enclosingBlock(start.containerNode()); |
| else |
| elementToSplitTo = editableRootForPosition(start); |
| |
| if (!elementToSplitTo) |
| return; |
| |
| RefPtrWillBeRawPtr<Node> outerBlock = (start.containerNode() == elementToSplitTo) ? start.containerNode() : splitTreeToNode(start.containerNode(), elementToSplitTo).get(); |
| |
| VisiblePosition startOfContents(start); |
| if (!targetBlockquote) { |
| // Create a new blockquote and insert it as a child of the root editable element. We accomplish |
| // this by splitting all parents of the current paragraph up to that point. |
| targetBlockquote = createBlockElement(); |
| if (outerBlock == start.containerNode()) |
| insertNodeAt(targetBlockquote, start); |
| else |
| insertNodeBefore(targetBlockquote, outerBlock); |
| startOfContents = VisiblePosition(positionInParentAfterNode(*targetBlockquote)); |
| } |
| |
| VisiblePosition endOfContents(end); |
| if (startOfContents.isNull() || endOfContents.isNull()) |
| return; |
| moveParagraphWithClones(startOfContents, endOfContents, targetBlockquote.get(), outerBlock.get()); |
| } |
| |
| void IndentOutdentCommand::outdentParagraph() |
| { |
| VisiblePosition visibleStartOfParagraph = startOfParagraph(endingSelection().visibleStart()); |
| VisiblePosition visibleEndOfParagraph = endOfParagraph(visibleStartOfParagraph); |
| |
| HTMLElement* enclosingElement = toHTMLElement(enclosingNodeOfType(visibleStartOfParagraph.deepEquivalent(), &isHTMLListOrBlockquoteElement)); |
| if (!enclosingElement || !enclosingElement->parentNode()->hasEditableStyle()) // We can't outdent if there is no place to go! |
| return; |
| |
| // Use InsertListCommand to remove the selection from the list |
| if (isHTMLOListElement(*enclosingElement)) { |
| applyCommandToComposite(InsertListCommand::create(document(), InsertListCommand::OrderedList)); |
| return; |
| } |
| if (isHTMLUListElement(*enclosingElement)) { |
| applyCommandToComposite(InsertListCommand::create(document(), InsertListCommand::UnorderedList)); |
| return; |
| } |
| |
| // The selection is inside a blockquote i.e. enclosingNode is a blockquote |
| VisiblePosition positionInEnclosingBlock = VisiblePosition(firstPositionInNode(enclosingElement)); |
| // If the blockquote is inline, the start of the enclosing block coincides with |
| // positionInEnclosingBlock. |
| VisiblePosition startOfEnclosingBlock = (enclosingElement->layoutObject() && enclosingElement->layoutObject()->isInline()) ? positionInEnclosingBlock : startOfBlock(positionInEnclosingBlock); |
| VisiblePosition lastPositionInEnclosingBlock = VisiblePosition(lastPositionInNode(enclosingElement)); |
| VisiblePosition endOfEnclosingBlock = endOfBlock(lastPositionInEnclosingBlock); |
| if (visibleStartOfParagraph == startOfEnclosingBlock && |
| visibleEndOfParagraph == endOfEnclosingBlock) { |
| // The blockquote doesn't contain anything outside the paragraph, so it can be totally removed. |
| Node* splitPoint = enclosingElement->nextSibling(); |
| removeNodePreservingChildren(enclosingElement); |
| // outdentRegion() assumes it is operating on the first paragraph of an enclosing blockquote, but if there are multiply nested blockquotes and we've |
| // just removed one, then this assumption isn't true. By splitting the next containing blockquote after this node, we keep this assumption true |
| if (splitPoint) { |
| if (Element* splitPointParent = splitPoint->parentElement()) { |
| if (splitPointParent->hasTagName(blockquoteTag) |
| && !splitPoint->hasTagName(blockquoteTag) |
| && splitPointParent->parentNode()->hasEditableStyle()) // We can't outdent if there is no place to go! |
| splitElement(splitPointParent, splitPoint); |
| } |
| } |
| |
| document().updateLayoutIgnorePendingStylesheets(); |
| visibleStartOfParagraph = VisiblePosition(visibleStartOfParagraph.deepEquivalent()); |
| visibleEndOfParagraph = VisiblePosition(visibleEndOfParagraph.deepEquivalent()); |
| if (visibleStartOfParagraph.isNotNull() && !isStartOfParagraph(visibleStartOfParagraph)) |
| insertNodeAt(createBreakElement(document()), visibleStartOfParagraph.deepEquivalent()); |
| if (visibleEndOfParagraph.isNotNull() && !isEndOfParagraph(visibleEndOfParagraph)) |
| insertNodeAt(createBreakElement(document()), visibleEndOfParagraph.deepEquivalent()); |
| |
| return; |
| } |
| RefPtrWillBeRawPtr<Node> splitBlockquoteNode = enclosingElement; |
| if (Element* enclosingBlockFlow = enclosingBlock(visibleStartOfParagraph.deepEquivalent().deprecatedNode())) { |
| if (enclosingBlockFlow != enclosingElement) { |
| splitBlockquoteNode = splitTreeToNode(enclosingBlockFlow, enclosingElement, true); |
| } else { |
| // We split the blockquote at where we start outdenting. |
| Node* highestInlineNode = highestEnclosingNodeOfType(visibleStartOfParagraph.deepEquivalent(), isInline, CannotCrossEditingBoundary, enclosingBlockFlow); |
| splitElement(enclosingElement, highestInlineNode ? highestInlineNode : visibleStartOfParagraph.deepEquivalent().deprecatedNode()); |
| } |
| } |
| VisiblePosition startOfParagraphToMove(startOfParagraph(visibleStartOfParagraph)); |
| VisiblePosition endOfParagraphToMove(endOfParagraph(visibleEndOfParagraph)); |
| if (startOfParagraphToMove.isNull() || endOfParagraphToMove.isNull()) |
| return; |
| RefPtrWillBeRawPtr<HTMLBRElement> placeholder = createBreakElement(document()); |
| insertNodeBefore(placeholder, splitBlockquoteNode); |
| moveParagraph(startOfParagraphToMove, endOfParagraphToMove, VisiblePosition(positionBeforeNode(placeholder.get())), true); |
| } |
| |
| // FIXME: We should merge this function with ApplyBlockElementCommand::formatSelection |
| void IndentOutdentCommand::outdentRegion(const VisiblePosition& startOfSelection, const VisiblePosition& endOfSelection) |
| { |
| VisiblePosition endOfCurrentParagraph = endOfParagraph(startOfSelection); |
| VisiblePosition endOfLastParagraph = endOfParagraph(endOfSelection); |
| |
| if (endOfCurrentParagraph == endOfLastParagraph) { |
| outdentParagraph(); |
| return; |
| } |
| |
| Position originalSelectionEnd = endingSelection().end(); |
| VisiblePosition endAfterSelection = endOfParagraph(endOfLastParagraph.next()); |
| |
| while (endOfCurrentParagraph != endAfterSelection) { |
| VisiblePosition endOfNextParagraph = endOfParagraph(endOfCurrentParagraph.next()); |
| if (endOfCurrentParagraph == endOfLastParagraph) |
| setEndingSelection(VisibleSelection(originalSelectionEnd, DOWNSTREAM)); |
| else |
| setEndingSelection(endOfCurrentParagraph); |
| |
| outdentParagraph(); |
| |
| // outdentParagraph could move more than one paragraph if the paragraph |
| // is in a list item. As a result, endAfterSelection and endOfNextParagraph |
| // could refer to positions no longer in the document. |
| if (endAfterSelection.isNotNull() && !endAfterSelection.deepEquivalent().inDocument()) |
| break; |
| |
| if (endOfNextParagraph.isNotNull() && !endOfNextParagraph.deepEquivalent().inDocument()) { |
| endOfCurrentParagraph = VisiblePosition(endingSelection().end()); |
| endOfNextParagraph = endOfParagraph(endOfCurrentParagraph.next()); |
| } |
| endOfCurrentParagraph = endOfNextParagraph; |
| } |
| } |
| |
| void IndentOutdentCommand::formatSelection(const VisiblePosition& startOfSelection, const VisiblePosition& endOfSelection) |
| { |
| if (m_typeOfAction == Indent) |
| ApplyBlockElementCommand::formatSelection(startOfSelection, endOfSelection); |
| else |
| outdentRegion(startOfSelection, endOfSelection); |
| } |
| |
| void IndentOutdentCommand::formatRange(const Position& start, const Position& end, const Position&, RefPtrWillBeRawPtr<HTMLElement>& blockquoteForNextIndent) |
| { |
| if (tryIndentingAsListItem(start, end)) |
| blockquoteForNextIndent = nullptr; |
| else |
| indentIntoBlockquote(start, end, blockquoteForNextIndent); |
| } |
| |
| } |