void SVGTextContentElement::selectSubString(unsigned charnum, unsigned nchars, ExceptionCode& ec)
{
unsigned numberOfChars = getNumberOfChars();
if (charnum >= numberOfChars) {
ec = INDEX_SIZE_ERR;
return;
}
if (nchars > numberOfChars - charnum)
nchars = numberOfChars - charnum;
ASSERT(document());
ASSERT(document()->frame());
FrameSelection* selection = document()->frame()->selection();
if (!selection)
return;
// Find selection start
VisiblePosition start(firstPositionInNode(const_cast<SVGTextContentElement*>(this)));
for (unsigned i = 0; i < charnum; ++i)
start = start.next();
// Find selection end
VisiblePosition end(start);
for (unsigned i = 0; i < nchars; ++i)
end = end.next();
selection->setSelection(VisibleSelection(start, end));
}
void SelectionMarkerController::onMarkerMove()
{
if(m_inController)
return;
m_inController = true;
// Update the selection according to the marker movement
HitTestRequest request(HitTestRequest::Active);
HitTestResult resultStart(m_start->position());
m_frame->contentRenderer()->layer()->hitTest(request, resultStart);
Node* startNode = resultStart.innerNode();
VisiblePosition visibleStart;
if( startNode && startNode->renderer())
visibleStart = startNode->renderer()->positionForPoint(resultStart.localPoint());
HitTestResult resultEnd(m_end->position());
m_frame->contentRenderer()->layer()->hitTest(request, resultEnd);
Node* endNode = resultEnd.innerNode();
VisiblePosition visibleEnd;
if( endNode && endNode->renderer())
visibleEnd = endNode->renderer()->positionForPoint(resultEnd.localPoint());
VisibleSelection newSelection(visibleStart, visibleEnd);
FrameSelection* selection = m_frame->selection();
ASSERT(selection);
selection->setSelection(newSelection);
m_inController = false;
}
void DOMSelection::addRange(Range* r)
{
if (!m_frame)
return;
if (!r)
return;
FrameSelection* selection = m_frame->selection();
if (selection->isNone()) {
selection->setSelection(VisibleSelection(r));
return;
}
RefPtr<Range> range = selection->selection().toNormalizedRange();
ExceptionCode ec = 0;
if (r->compareBoundaryPoints(Range::START_TO_START, range.get(), ec) == -1) {
// We don't support discontiguous selection. We don't do anything if r and range don't intersect.
if (r->compareBoundaryPoints(Range::START_TO_END, range.get(), ec) > -1) {
if (r->compareBoundaryPoints(Range::END_TO_END, range.get(), ec) == -1)
// The original range and r intersect.
selection->setSelection(VisibleSelection(r->startPosition(), range->endPosition(), DOWNSTREAM));
else
// r contains the original range.
selection->setSelection(VisibleSelection(r));
}
} else {
// We don't support discontiguous selection. We don't do anything if r and range don't intersect.
if (r->compareBoundaryPoints(Range::END_TO_START, range.get(), ec) < 1 && !ec) {
if (r->compareBoundaryPoints(Range::END_TO_END, range.get(), ec) == -1)
// The original range contains r.
selection->setSelection(VisibleSelection(range.get()));
else
// The original range and r intersect.
selection->setSelection(VisibleSelection(range->startPosition(), r->endPosition(), DOWNSTREAM));
}
}
}
void TypingCommand::forwardDeleteKeyPressed(TextGranularity granularity, bool killRing)
{
Frame* frame = document()->frame();
if (!frame)
return;
frame->editor()->updateMarkersForWordsAffectedByEditing(false);
VisibleSelection selectionToDelete;
VisibleSelection selectionAfterUndo;
switch (endingSelection().selectionType()) {
case VisibleSelection::RangeSelection:
selectionToDelete = endingSelection();
selectionAfterUndo = selectionToDelete;
break;
case VisibleSelection::CaretSelection: {
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.
FrameSelection selection;
selection.setSelection(endingSelection());
selection.modify(FrameSelection::AlterationExtend, DirectionForward, granularity);
if (killRing && selection.isCaret() && granularity != CharacterGranularity)
selection.modify(FrameSelection::AlterationExtend, DirectionForward, CharacterGranularity);
Position downstreamEnd = endingSelection().end().downstream();
VisiblePosition visibleEnd = endingSelection().visibleEnd();
Node* enclosingTableCell = enclosingNodeOfType(visibleEnd.deepEquivalent(), &isTableCell);
if (enclosingTableCell && visibleEnd == lastPositionInNode(enclosingTableCell))
return;
if (visibleEnd == endOfParagraph(visibleEnd))
downstreamEnd = visibleEnd.next(CannotCrossEditingBoundary).deepEquivalent().downstream();
// When deleting tables: Select the table first, then perform the deletion
if (downstreamEnd.containerNode() && downstreamEnd.containerNode()->renderer() && downstreamEnd.containerNode()->renderer()->isTable()
&& downstreamEnd.computeOffsetInContainerNode() <= caretMinOffset(downstreamEnd.containerNode())) {
setEndingSelection(VisibleSelection(endingSelection().end(), positionAfterNode(downstreamEnd.containerNode()), DOWNSTREAM, endingSelection().isDirectional()));
typingAddedToOpenCommand(ForwardDeleteKey);
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(FrameSelection::AlterationExtend, DirectionForward, 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 VisibleSelection 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.containerNode() != selectionToDelete.end().containerNode())
extent = selectionToDelete.extent();
else {
int extraCharacters;
if (selectionToDelete.start().containerNode() == selectionToDelete.end().containerNode())
extraCharacters = selectionToDelete.end().computeOffsetInContainerNode() - selectionToDelete.start().computeOffsetInContainerNode();
else
extraCharacters = selectionToDelete.end().computeOffsetInContainerNode();
extent = Position(extent.containerNode(), extent.computeOffsetInContainerNode() + extraCharacters, Position::PositionIsOffsetInAnchor);
}
selectionAfterUndo.setWithoutValidation(startingSelection().start(), extent);
}
break;
}
case VisibleSelection::NoSelection:
ASSERT_NOT_REACHED();
break;
}
ASSERT(!selectionToDelete.isNone());
if (selectionToDelete.isNone())
return;
if (selectionToDelete.isCaret() || !frame->selection()->shouldDeleteSelection(selectionToDelete))
return;
if (killRing)
frame->editor()->addToKillRing(selectionToDelete.toNormalizedRange().get(), false);
// make undo select what was deleted
setStartingSelection(selectionAfterUndo);
CompositeEditCommand::deleteSelection(selectionToDelete, m_smartDelete);
setSmartDelete(false);
typingAddedToOpenCommand(ForwardDeleteKey);
}
void TypingCommand::deleteKeyPressed(TextGranularity granularity, bool killRing)
{
Frame* frame = document()->frame();
if (!frame)
return;
frame->editor()->updateMarkersForWordsAffectedByEditing(false);
VisibleSelection selectionToDelete;
VisibleSelection selectionAfterUndo;
switch (endingSelection().selectionType()) {
case VisibleSelection::RangeSelection:
selectionToDelete = endingSelection();
selectionAfterUndo = selectionToDelete;
break;
case VisibleSelection::CaretSelection: {
// After breaking out of an empty mail blockquote, we still want continue with the deletion
// so actual content will get deleted, and not just the quote style.
if (breakOutOfEmptyMailBlockquotedParagraph())
typingAddedToOpenCommand(DeleteKey);
m_smartDelete = false;
FrameSelection selection;
selection.setSelection(endingSelection());
selection.modify(FrameSelection::AlterationExtend, DirectionBackward, granularity);
if (killRing && selection.isCaret() && granularity != CharacterGranularity)
selection.modify(FrameSelection::AlterationExtend, DirectionBackward, CharacterGranularity);
if (endingSelection().visibleStart().previous(CannotCrossEditingBoundary).isNull()) {
// When the caret is at the start of the editable area in an empty list item, break out of the list item.
if (breakOutOfEmptyListItem()) {
typingAddedToOpenCommand(DeleteKey);
return;
}
// When there are no visible positions in the editing root, delete its entire contents.
if (endingSelection().visibleStart().next(CannotCrossEditingBoundary).isNull() && makeEditableRootEmpty()) {
typingAddedToOpenCommand(DeleteKey);
return;
}
}
VisiblePosition visibleStart(endingSelection().visibleStart());
// If we have a caret selection at the beginning of a cell, we have nothing to do.
Node* enclosingTableCell = enclosingNodeOfType(visibleStart.deepEquivalent(), &isTableCell);
if (enclosingTableCell && visibleStart == firstPositionInNode(enclosingTableCell))
return;
// 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(CannotCrossEditingBoundary))) {
// 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(FrameSelection::AlterationExtend, DirectionBackward, granularity);
// If the caret is just after a table, select the table and don't delete anything.
} else if (Node* table = isFirstPositionAfterTable(visibleStart)) {
setEndingSelection(VisibleSelection(positionBeforeNode(table), endingSelection().start(), DOWNSTREAM, endingSelection().isDirectional()));
typingAddedToOpenCommand(DeleteKey);
return;
}
selectionToDelete = selection.selection();
if (granularity == CharacterGranularity && selectionToDelete.end().containerNode() == selectionToDelete.start().containerNode()
&& selectionToDelete.end().computeOffsetInContainerNode() - selectionToDelete.start().computeOffsetInContainerNode() > 1) {
// If there are multiple Unicode code points to be deleted, adjust the range to match platform conventions.
selectionToDelete.setWithoutValidation(selectionToDelete.end(), selectionToDelete.end().previous(BackwardDeletion));
}
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 VisibleSelection 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 VisibleSelection::NoSelection:
ASSERT_NOT_REACHED();
break;
}
ASSERT(!selectionToDelete.isNone());
if (selectionToDelete.isNone())
return;
if (selectionToDelete.isCaret() || !frame->selection()->shouldDeleteSelection(selectionToDelete))
return;
if (killRing)
frame->editor()->addToKillRing(selectionToDelete.toNormalizedRange().get(), false);
// 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(DeleteKey);
}
