void TypingCommand::forwardDeleteKeyPressed(TextGranularity granularity)
{
Selection selectionToDelete;
Selection selectionAfterUndo;
switch (endingSelection().state()) {
case Selection::RANGE:
selectionToDelete = endingSelection();
selectionAfterUndo = selectionToDelete;
break;
case Selection::CARET: {
m_smartDelete = false;
// Handle delete at beginning-of-block case.
// Do nothing in the case that the caret is at the start of a
// root editable element or at the start of a document.
SelectionController selection;
selection.setSelection(endingSelection());
selection.modify(SelectionController::EXTEND, SelectionController::FORWARD, granularity);
Position downstreamEnd = endingSelection().end().downstream();
VisiblePosition visibleEnd = endingSelection().visibleEnd();
if (visibleEnd == endOfParagraph(visibleEnd))
downstreamEnd = visibleEnd.next(true).deepEquivalent().downstream();
// When deleting tables: Select the table first, then perform the deletion
if (downstreamEnd.node() && downstreamEnd.node()->renderer() && downstreamEnd.node()->renderer()->isTable() && downstreamEnd.offset() == 0) {
setEndingSelection(Selection(endingSelection().end(), Position(downstreamEnd.node(), maxDeepOffset(downstreamEnd.node())), DOWNSTREAM));
typingAddedToOpenCommand();
return;
}
// deleting to end of paragraph when at end of paragraph needs to merge the next paragraph (if any)
if (granularity == ParagraphBoundary && selection.selection().isCaret() && isEndOfParagraph(selection.selection().visibleEnd()))
selection.modify(SelectionController::EXTEND, SelectionController::FORWARD, CharacterGranularity);
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.
Position extent = startingSelection().end();
if (extent.node() != selectionToDelete.end().node())
extent = selectionToDelete.extent();
else {
int extraCharacters;
if (selectionToDelete.start().node() == selectionToDelete.end().node())
extraCharacters = selectionToDelete.end().offset() - selectionToDelete.start().offset();
else
extraCharacters = selectionToDelete.end().offset();
extent = Position(extent.node(), extent.offset() + extraCharacters);
}
selectionAfterUndo.setWithoutValidation(startingSelection().start(), extent);
}
break;
}
case Selection::NONE:
ASSERT_NOT_REACHED();
break;
}
if (selectionToDelete.isCaretOrRange() && document()->frame()->shouldDeleteSelection(selectionToDelete)) {
// make undo select what was deleted
setStartingSelection(selectionAfterUndo);
CompositeEditCommand::deleteSelection(selectionToDelete, m_smartDelete);
setSmartDelete(false);
typingAddedToOpenCommand();
}
}
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();
}
}
