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());
}
static bool needInterchangeNewlineAfter(const VisiblePosition& v)
{
return isEndOfParagraph(v) && isStartOfParagraph(v.next());
}
void InsertTextCommand::input(const String& text, bool selectInsertedText, RebalanceType whitespaceRebalance)
{
ASSERT(text.find('\n') == notFound);
if (!endingSelection().isNonOrphanedCaretOrRange())
return;
// Delete the current selection.
// FIXME: This delete operation blows away the typing style.
if (endingSelection().isRange()) {
if (performTrivialReplace(text, selectInsertedText))
return;
deleteSelection(false, true, true, false);
}
Position startPosition(endingSelection().start());
Position placeholder;
// We want to remove preserved newlines and brs that will collapse (and thus become unnecessary) when content
// is inserted just before them.
// FIXME: We shouldn't really have to do this, but removing placeholders is a workaround for 9661.
// If the caret is just before a placeholder, downstream will normalize the caret to it.
Position downstream(startPosition.downstream());
if (lineBreakExistsAtPosition(downstream)) {
// FIXME: This doesn't handle placeholders at the end of anonymous blocks.
VisiblePosition caret(startPosition);
if (isEndOfBlock(caret) && isStartOfParagraph(caret))
placeholder = downstream;
// Don't remove the placeholder yet, otherwise the block we're inserting into would collapse before
// we get a chance to insert into it. We check for a placeholder now, though, because doing so requires
// the creation of a VisiblePosition, and if we did that post-insertion it would force a layout.
}
// Insert the character at the leftmost candidate.
startPosition = startPosition.upstream();
// It is possible for the node that contains startPosition to contain only unrendered whitespace,
// and so deleteInsignificantText could remove it. Save the position before the node in case that happens.
Position positionBeforeStartNode(positionInParentBeforeNode(startPosition.containerNode()));
deleteInsignificantText(startPosition.upstream(), startPosition.downstream());
if (!startPosition.anchorNode()->inDocument())
startPosition = positionBeforeStartNode;
if (!startPosition.isCandidate())
startPosition = startPosition.downstream();
startPosition = positionAvoidingSpecialElementBoundary(startPosition);
Position endPosition;
if (text == "\t") {
endPosition = insertTab(startPosition);
startPosition = endPosition.previous();
if (placeholder.isNotNull())
removePlaceholderAt(placeholder);
} else {
// Make sure the document is set up to receive text
startPosition = positionInsideTextNode(startPosition);
ASSERT(startPosition.anchorType() == Position::PositionIsOffsetInAnchor);
ASSERT(startPosition.containerNode());
ASSERT(startPosition.containerNode()->isTextNode());
if (placeholder.isNotNull())
removePlaceholderAt(placeholder);
RefPtr<Text> textNode = static_cast<Text*>(startPosition.containerNode());
const unsigned offset = startPosition.offsetInContainerNode();
insertTextIntoNode(textNode, offset, text);
endPosition = Position(textNode, offset + text.length());
if (whitespaceRebalance == RebalanceLeadingAndTrailingWhitespaces) {
// The insertion may require adjusting adjacent whitespace, if it is present.
rebalanceWhitespaceAt(endPosition);
// Rebalancing on both sides isn't necessary if we've inserted only spaces.
if (!shouldRebalanceLeadingWhitespaceFor(text))
rebalanceWhitespaceAt(startPosition);
} else {
ASSERT(whitespaceRebalance == RebalanceAllWhitespaces);
if (canRebalance(startPosition) && canRebalance(endPosition))
rebalanceWhitespaceOnTextSubstring(textNode, startPosition.offsetInContainerNode(), endPosition.offsetInContainerNode());
}
}
// We could have inserted a part of composed character sequence,
// so we are basically treating ending selection as a range to avoid validation.
// <http://bugs.webkit.org/show_bug.cgi?id=15781>
VisibleSelection forcedEndingSelection;
forcedEndingSelection.setWithoutValidation(startPosition, endPosition);
setEndingSelection(forcedEndingSelection);
// Handle the case where there is a typing style.
if (RefPtr<EditingStyle> typingStyle = document()->frame()->selection()->typingStyle()) {
typingStyle->prepareToApplyAt(endPosition, EditingStyle::PreserveWritingDirection);
if (!typingStyle->isEmpty())
applyStyle(typingStyle.get());
}
if (!selectInsertedText)
setEndingSelection(VisibleSelection(endingSelection().end(), endingSelection().affinity()));
}
void TypingCommand::deleteKeyPressed(TextGranularity granularity)
{
Selection selectionToDelete;
Selection selectionAfterUndo;
switch (endingSelection().state()) {
case Selection::RANGE:
selectionToDelete = endingSelection();
selectionAfterUndo = selectionToDelete;
break;
case Selection::CARET: {
m_smartDelete = false;
SelectionController selection;
selection.setSelection(endingSelection());
selection.modify(SelectionController::EXTEND, SelectionController::BACKWARD, granularity);
// When the caret is at the start of the editable area in an empty list item, break out of the list item.
if (endingSelection().visibleStart().previous(true).isNull()) {
if (breakOutOfEmptyListItem()) {
typingAddedToOpenCommand();
return;
}
}
VisiblePosition visibleStart(endingSelection().visibleStart());
// If the caret is at the start of a paragraph after a table, move content into the last table cell.
if (isStartOfParagraph(visibleStart) && isFirstPositionAfterTable(visibleStart.previous(true))) {
// Unless the caret is just before a table. We don't want to move a table into the last table cell.
if (isLastPositionBeforeTable(visibleStart))
return;
// Extend the selection backward into the last cell, then deletion will handle the move.
selection.modify(SelectionController::EXTEND, SelectionController::BACKWARD, granularity);
// If the caret is just after a table, select the table and don't delete anything.
} else if (Node* table = isFirstPositionAfterTable(visibleStart)) {
setEndingSelection(Selection(Position(table, 0), endingSelection().start(), DOWNSTREAM));
typingAddedToOpenCommand();
return;
}
selectionToDelete = selection.selection();
if (!startingSelection().isRange() || selectionToDelete.base() != startingSelection().start())
selectionAfterUndo = selectionToDelete;
else
// It's a little tricky to compute what the starting selection would have been in the original document.
// We can't let the Selection class's validation kick in or it'll adjust for us based on
// the current state of the document and we'll get the wrong result.
selectionAfterUndo.setWithoutValidation(startingSelection().end(), selectionToDelete.extent());
break;
}
case Selection::NONE:
ASSERT_NOT_REACHED();
break;
}
if (selectionToDelete.isCaretOrRange() && document()->frame()->shouldDeleteSelection(selectionToDelete)) {
// Make undo select everything that has been deleted, unless an undo will undo more than just this deletion.
// FIXME: This behaves like TextEdit except for the case where you open with text insertion and then delete
// more text than you insert. In that case all of the text that was around originally should be selected.
if (m_openedByBackwardDelete)
setStartingSelection(selectionAfterUndo);
CompositeEditCommand::deleteSelection(selectionToDelete, m_smartDelete);
setSmartDelete(false);
typingAddedToOpenCommand();
}
}
void InsertTextCommand::input(const String& text, bool selectInsertedText)
{
ASSERT(text.find('\n') == notFound);
if (!endingSelection().isNonOrphanedCaretOrRange())
return;
// Delete the current selection.
// FIXME: This delete operation blows away the typing style.
if (endingSelection().isRange()) {
if (performTrivialReplace(text, selectInsertedText))
return;
deleteSelection(false, true, true, false);
}
Position startPosition(endingSelection().start());
Position placeholder;
// We want to remove preserved newlines and brs that will collapse (and thus become unnecessary) when content
// is inserted just before them.
// FIXME: We shouldn't really have to do this, but removing placeholders is a workaround for 9661.
// If the caret is just before a placeholder, downstream will normalize the caret to it.
Position downstream(startPosition.downstream());
if (lineBreakExistsAtPosition(downstream)) {
// FIXME: This doesn't handle placeholders at the end of anonymous blocks.
VisiblePosition caret(startPosition);
if (isEndOfBlock(caret) && isStartOfParagraph(caret))
placeholder = downstream;
// Don't remove the placeholder yet, otherwise the block we're inserting into would collapse before
// we get a chance to insert into it. We check for a placeholder now, though, because doing so requires
// the creation of a VisiblePosition, and if we did that post-insertion it would force a layout.
}
// Insert the character at the leftmost candidate.
startPosition = startPosition.upstream();
// It is possible for the node that contains startPosition to contain only unrendered whitespace,
// and so deleteInsignificantText could remove it. Save the position before the node in case that happens.
Position positionBeforeStartNode(positionInParentBeforeNode(startPosition.node()));
deleteInsignificantText(startPosition.upstream(), startPosition.downstream());
if (!startPosition.node()->inDocument())
startPosition = positionBeforeStartNode;
if (!startPosition.isCandidate())
startPosition = startPosition.downstream();
startPosition = positionAvoidingSpecialElementBoundary(startPosition);
Position endPosition;
if (text == "\t") {
endPosition = insertTab(startPosition);
startPosition = endPosition.previous();
if (placeholder.isNotNull())
removePlaceholderAt(placeholder);
m_charactersAdded += 1;
} else {
// Make sure the document is set up to receive text
startPosition = prepareForTextInsertion(startPosition);
if (placeholder.isNotNull())
removePlaceholderAt(placeholder);
Text *textNode = static_cast<Text *>(startPosition.node());
int offset = startPosition.deprecatedEditingOffset();
insertTextIntoNode(textNode, offset, text);
endPosition = Position(textNode, offset + text.length());
// The insertion may require adjusting adjacent whitespace, if it is present.
rebalanceWhitespaceAt(endPosition);
// Rebalancing on both sides isn't necessary if we've inserted a space.
if (text != " ")
rebalanceWhitespaceAt(startPosition);
m_charactersAdded += text.length();
}
// We could have inserted a part of composed character sequence,
// so we are basically treating ending selection as a range to avoid validation.
// <http://bugs.webkit.org/show_bug.cgi?id=15781>
VisibleSelection forcedEndingSelection;
forcedEndingSelection.setWithoutValidation(startPosition, endPosition);
setEndingSelection(forcedEndingSelection);
// Handle the case where there is a typing style.
CSSMutableStyleDeclaration* typingStyle = document()->frame()->selection()->typingStyle();
RefPtr<CSSComputedStyleDeclaration> endingStyle = endPosition.computedStyle();
RefPtr<CSSValue> unicodeBidi;
RefPtr<CSSValue> direction;
if (typingStyle) {
unicodeBidi = typingStyle->getPropertyCSSValue(CSSPropertyUnicodeBidi);
direction = typingStyle->getPropertyCSSValue(CSSPropertyDirection);
}
endingStyle->diff(typingStyle);
if (typingStyle && unicodeBidi) {
ASSERT(unicodeBidi->isPrimitiveValue());
typingStyle->setProperty(CSSPropertyUnicodeBidi, static_cast<CSSPrimitiveValue*>(unicodeBidi.get())->getIdent());
if (direction) {
ASSERT(direction->isPrimitiveValue());
typingStyle->setProperty(CSSPropertyDirection, static_cast<CSSPrimitiveValue*>(direction.get())->getIdent());
}
}
if (typingStyle && typingStyle->length())
applyStyle(typingStyle);
if (!selectInsertedText)
setEndingSelection(VisibleSelection(endingSelection().end(), endingSelection().affinity()));
}
void InsertTextCommand::doApply()
{
ASSERT(m_text.find('\n') == kNotFound);
if (!endingSelection().isNonOrphanedCaretOrRange())
return;
// Delete the current selection.
// FIXME: This delete operation blows away the typing style.
if (endingSelection().isRange()) {
if (performTrivialReplace(m_text, m_selectInsertedText))
return;
bool endOfSelectionWasAtStartOfBlock = isStartOfBlock(endingSelection().visibleEnd());
deleteSelection(false, true, false, false);
// deleteSelection eventually makes a new endingSelection out of a Position. If that Position doesn't have
// a renderer (e.g. it is on a <frameset> in the DOM), the VisibleSelection cannot be canonicalized to
// anything other than NoSelection. The rest of this function requires a real endingSelection, so bail out.
if (endingSelection().isNone())
return;
if (endOfSelectionWasAtStartOfBlock) {
if (EditingStyle* typingStyle = document().frame()->selection().typingStyle())
typingStyle->removeBlockProperties();
}
} else if (document().frame()->editor().isOverwriteModeEnabled()) {
if (performOverwrite(m_text, m_selectInsertedText))
return;
}
Position startPosition(endingSelection().start());
Position placeholder;
// We want to remove preserved newlines and brs that will collapse (and thus become unnecessary) when content
// is inserted just before them.
// FIXME: We shouldn't really have to do this, but removing placeholders is a workaround for 9661.
// If the caret is just before a placeholder, downstream will normalize the caret to it.
Position downstream(startPosition.downstream());
if (lineBreakExistsAtPosition(downstream)) {
// FIXME: This doesn't handle placeholders at the end of anonymous blocks.
VisiblePosition caret(startPosition);
if (isEndOfBlock(caret) && isStartOfParagraph(caret))
placeholder = downstream;
// Don't remove the placeholder yet, otherwise the block we're inserting into would collapse before
// we get a chance to insert into it. We check for a placeholder now, though, because doing so requires
// the creation of a VisiblePosition, and if we did that post-insertion it would force a layout.
}
// Insert the character at the leftmost candidate.
startPosition = startPosition.upstream();
// It is possible for the node that contains startPosition to contain only unrendered whitespace,
// and so deleteInsignificantText could remove it. Save the position before the node in case that happens.
ASSERT(startPosition.containerNode());
Position positionBeforeStartNode(positionInParentBeforeNode(*startPosition.containerNode()));
deleteInsignificantText(startPosition, startPosition.downstream());
if (!startPosition.inDocument())
startPosition = positionBeforeStartNode;
if (!startPosition.isCandidate())
startPosition = startPosition.downstream();
startPosition = positionAvoidingSpecialElementBoundary(startPosition);
Position endPosition;
if (m_text == "\t") {
endPosition = insertTab(startPosition);
startPosition = endPosition.previous();
if (placeholder.isNotNull())
removePlaceholderAt(placeholder);
} else {
// Make sure the document is set up to receive m_text
startPosition = positionInsideTextNode(startPosition);
ASSERT(startPosition.anchorType() == Position::PositionIsOffsetInAnchor);
ASSERT(startPosition.containerNode());
ASSERT(startPosition.containerNode()->isTextNode());
if (placeholder.isNotNull())
removePlaceholderAt(placeholder);
RefPtrWillBeRawPtr<Text> textNode = startPosition.containerText();
const unsigned offset = startPosition.offsetInContainerNode();
insertTextIntoNode(textNode, offset, m_text);
endPosition = Position(textNode, offset + m_text.length());
if (m_rebalanceType == RebalanceLeadingAndTrailingWhitespaces) {
// The insertion may require adjusting adjacent whitespace, if it is present.
rebalanceWhitespaceAt(endPosition);
// Rebalancing on both sides isn't necessary if we've inserted only spaces.
if (!shouldRebalanceLeadingWhitespaceFor(m_text))
rebalanceWhitespaceAt(startPosition);
} else {
ASSERT(m_rebalanceType == RebalanceAllWhitespaces);
if (canRebalance(startPosition) && canRebalance(endPosition))
rebalanceWhitespaceOnTextSubstring(textNode, startPosition.offsetInContainerNode(), endPosition.offsetInContainerNode());
}
}
setEndingSelectionWithoutValidation(startPosition, endPosition);
// Handle the case where there is a typing style.
if (RefPtrWillBeRawPtr<EditingStyle> typingStyle = document().frame()->selection().typingStyle()) {
typingStyle->prepareToApplyAt(endPosition, EditingStyle::PreserveWritingDirection);
if (!typingStyle->isEmpty())
applyStyle(typingStyle.get());
}
if (!m_selectInsertedText)
setEndingSelection(VisibleSelection(endingSelection().end(), endingSelection().affinity(), endingSelection().isDirectional()));
}
