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Diffstat (limited to 'WebCore/editing/InsertLineBreakCommand.cpp')
| -rw-r--r-- | WebCore/editing/InsertLineBreakCommand.cpp | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/WebCore/editing/InsertLineBreakCommand.cpp b/WebCore/editing/InsertLineBreakCommand.cpp deleted file mode 100644 index d6b4f56..0000000 --- a/WebCore/editing/InsertLineBreakCommand.cpp +++ /dev/null @@ -1,187 +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 "InsertLineBreakCommand.h" - -#include "CSSMutableStyleDeclaration.h" -#include "Document.h" -#include "Element.h" -#include "Frame.h" -#include "Text.h" -#include "VisiblePosition.h" -#include "Range.h" -#include "htmlediting.h" -#include "HTMLNames.h" -#include "visible_units.h" - -namespace WebCore { - -using namespace HTMLNames; - -InsertLineBreakCommand::InsertLineBreakCommand(Document* document) - : CompositeEditCommand(document) -{ -} - -bool InsertLineBreakCommand::preservesTypingStyle() const -{ - return true; -} - -void InsertLineBreakCommand::insertNodeAfterPosition(Node *node, const Position &pos) -{ - // Insert the BR after the caret position. In the case the - // position is a block, do an append. We don't want to insert - // the BR *after* the block. - Node *cb = pos.node()->enclosingBlockFlowElement(); - if (cb == pos.node()) - appendNode(node, cb); - else - insertNodeAfter(node, pos.node()); -} - -void InsertLineBreakCommand::insertNodeBeforePosition(Node *node, const Position &pos) -{ - // Insert the BR after the caret position. In the case the - // position is a block, do an append. We don't want to insert - // the BR *before* the block. - Node *cb = pos.node()->enclosingBlockFlowElement(); - if (cb == pos.node()) - appendNode(node, cb); - else - insertNodeBefore(node, pos.node()); -} - -// Whether we should insert a break element or a '\n'. -bool InsertLineBreakCommand::shouldUseBreakElement(const Position& insertionPos) -{ - // An editing position like [input, 0] actually refers to the position before - // the input element, and in that case we need to check the input element's - // parent's renderer. - Position p(rangeCompliantEquivalent(insertionPos)); - return p.node()->renderer() && !p.node()->renderer()->style()->preserveNewline(); -} - -void InsertLineBreakCommand::doApply() -{ - deleteSelection(); - Selection selection = endingSelection(); - if (selection.isNone()) - return; - - VisiblePosition caret(selection.visibleStart()); - Position pos(caret.deepEquivalent()); - - pos = positionAvoidingSpecialElementBoundary(pos); - - pos = positionOutsideTabSpan(pos); - - RefPtr<Node> nodeToInsert; - if (shouldUseBreakElement(pos)) - nodeToInsert = createBreakElement(document()); - else - nodeToInsert = document()->createTextNode("\n"); - - // FIXME: Need to merge text nodes when inserting just after or before text. - - if (isEndOfParagraph(caret) && !lineBreakExistsAtPosition(caret)) { - bool needExtraLineBreak = !pos.node()->hasTagName(hrTag) && !pos.node()->hasTagName(tableTag); - - insertNodeAt(nodeToInsert.get(), pos); - - if (needExtraLineBreak) - insertNodeBefore(nodeToInsert->cloneNode(false).get(), nodeToInsert.get()); - - VisiblePosition endingPosition(Position(nodeToInsert.get(), 0)); - setEndingSelection(Selection(endingPosition)); - } else if (pos.offset() <= caretMinOffset(pos.node())) { - insertNodeAt(nodeToInsert.get(), pos); - - // Insert an extra br or '\n' if the just inserted one collapsed. - if (!isStartOfParagraph(VisiblePosition(Position(nodeToInsert.get(), 0)))) - insertNodeBefore(nodeToInsert->cloneNode(false).get(), nodeToInsert.get()); - - setEndingSelection(Selection(positionAfterNode(nodeToInsert.get()), DOWNSTREAM)); - } else if (pos.offset() >= caretMaxOffset(pos.node())) { - insertNodeAt(nodeToInsert.get(), pos); - setEndingSelection(Selection(positionAfterNode(nodeToInsert.get()), DOWNSTREAM)); - } else { - // Split a text node - ASSERT(pos.node()->isTextNode()); - - // Do the split - ExceptionCode ec = 0; - Text *textNode = static_cast<Text *>(pos.node()); - RefPtr<Text> textBeforeNode = document()->createTextNode(textNode->substringData(0, selection.start().offset(), ec)); - deleteTextFromNode(textNode, 0, pos.offset()); - insertNodeBefore(textBeforeNode.get(), textNode); - insertNodeBefore(nodeToInsert.get(), textNode); - Position endingPosition = Position(textNode, 0); - - // Handle whitespace that occurs after the split - updateLayout(); - if (!endingPosition.isRenderedCharacter()) { - Position positionBeforeTextNode(positionBeforeNode(textNode)); - // Clear out all whitespace and insert one non-breaking space - deleteInsignificantTextDownstream(endingPosition); - ASSERT(!textNode->renderer() || textNode->renderer()->style()->collapseWhiteSpace()); - // Deleting insignificant whitespace will remove textNode if it contains nothing but insignificant whitespace. - if (textNode->inDocument()) - insertTextIntoNode(textNode, 0, nonBreakingSpaceString()); - else { - RefPtr<Text> nbspNode = document()->createTextNode(nonBreakingSpaceString()); - insertNodeAt(nbspNode.get(), positionBeforeTextNode); - endingPosition = Position(nbspNode.get(), 0); - } - } - - setEndingSelection(Selection(endingPosition, DOWNSTREAM)); - } - - // Handle the case where there is a typing style. - - CSSMutableStyleDeclaration* typingStyle = document()->frame()->typingStyle(); - - if (typingStyle && typingStyle->length() > 0) { - // Apply the typing style to the inserted line break, so that if the selection - // leaves and then comes back, new input will have the right style. - // FIXME: We shouldn't always apply the typing style to the line break here, - // see <rdar://problem/5794462>. - applyStyle(typingStyle, Position(nodeToInsert.get(), 0), - Position(nodeToInsert.get(), maxDeepOffset(nodeToInsert.get()))); - // Even though this applyStyle operates on a Range, it still sets an endingSelection(). - // It tries to set a Selection around the content it operated on. So, that Selection - // will either (a) select the line break we inserted, or it will (b) be a caret just - // before the line break (if the line break is at the end of a block it isn't selectable). - // So, this next call sets the endingSelection() to a caret just after the line break - // that we inserted, or just before it if it's at the end of a block. - setEndingSelection(endingSelection().visibleEnd()); - } - - rebalanceWhitespace(); -} - -} |