static void clearSelectionIfNeeded(Frame* oldFocusedFrame, Frame* newFocusedFrame, Node* newFocusedNode)
{
if (!oldFocusedFrame || !newFocusedFrame)
return;
if (oldFocusedFrame->document() != newFocusedFrame->document())
return;
SelectionController* s = oldFocusedFrame->selection();
if (s->isNone())
return;
bool caretBrowsing = oldFocusedFrame->settings()->caretBrowsingEnabled();
if (caretBrowsing)
return;
Node* selectionStartNode = s->selection().start().node();
if (selectionStartNode == newFocusedNode || selectionStartNode->isDescendantOf(newFocusedNode) || selectionStartNode->shadowAncestorNode() == newFocusedNode)
return;
if (Node* mousePressNode = newFocusedFrame->eventHandler()->mousePressNode())
if (mousePressNode->renderer() && !mousePressNode->canStartSelection())
if (Node* root = s->rootEditableElement())
if (Node* shadowAncestorNode = root->shadowAncestorNode())
// Don't do this for textareas and text fields, when they lose focus their selections should be cleared
// and then restored when they regain focus, to match other browsers.
if (!shadowAncestorNode->hasTagName(inputTag) && !shadowAncestorNode->hasTagName(textareaTag))
return;
s->clear();
}
WebCore::IntRect SelectionHandler::selectionEndCaretRect()
{
if (!m_selectionActive)
return IntRect();
ASSERT(m_webPage && m_webPage->focusedOrMainFrame() && m_webPage->focusedOrMainFrame()->selection());
WebCore::IntRect caretLocation(m_webPage->focusedOrMainFrame()->selection()->selection().visibleEnd().absoluteCaretBounds());
SelectionController nextCaretSelection;
nextCaretSelection.setSelection(VisibleSelection(m_webPage->focusedOrMainFrame()->selection()->selection().visibleEnd()));
nextCaretSelection.modify(SelectionController::AlterationMove, SelectionController::DirectionForward, CharacterGranularity);
WebCore::IntRect nextCaretLocation(nextCaretSelection.selection().visibleStart().absoluteCaretBounds());
if (nextCaretLocation.y() == caretLocation.y()) {
// The next caret position is on this line, use the middle of the character
// as the active selection point.
caretLocation.move((nextCaretLocation.x() - caretLocation.x()) / 2, 0);
} else {
// Caret position is at the end of a line, advance 1 pixel to ensure
// overlap with character.
caretLocation.move(1, 0);
}
if (m_webPage->focusedOrMainFrame()->ownerRenderer()) {
WebCore::IntPoint frameOffset = m_webPage->focusedOrMainFrame()->ownerRenderer()->absoluteContentBox().location();
caretLocation.move(frameOffset.x(), frameOffset.y());
}
return caretLocation;
}
bool DOMSelection::containsNode(const Node* n, bool allowPartial) const
{
if (!m_frame)
return false;
SelectionController* selection = m_frame->selection();
if (!n || selection->isNone())
return false;
Node* parentNode = n->parentNode();
unsigned nodeIndex = n->nodeIndex();
RefPtr<Range> selectedRange = selection->selection().toNormalizedRange();
if (!parentNode)
return false;
ExceptionCode ec = 0;
bool nodeFullySelected = Range::compareBoundaryPoints(parentNode, nodeIndex, selectedRange->startContainer(ec), selectedRange->startOffset(ec)) >= 0
&& Range::compareBoundaryPoints(parentNode, nodeIndex + 1, selectedRange->endContainer(ec), selectedRange->endOffset(ec)) <= 0;
ASSERT(!ec);
if (nodeFullySelected)
return true;
bool nodeFullyUnselected = Range::compareBoundaryPoints(parentNode, nodeIndex, selectedRange->endContainer(ec), selectedRange->endOffset(ec)) > 0
|| Range::compareBoundaryPoints(parentNode, nodeIndex + 1, selectedRange->startContainer(ec), selectedRange->startOffset(ec)) < 0;
ASSERT(!ec);
if (nodeFullyUnselected)
return false;
return allowPartial || n->isTextNode();
}
void DOMSelection::deleteFromDocument()
{
if (!m_frame)
return;
SelectionController* selection = m_frame->selection();
if (selection->isNone())
return;
if (isCollapsed())
selection->modify(SelectionController::EXTEND, SelectionController::BACKWARD, CharacterGranularity);
RefPtr<Range> selectedRange = selection->selection().toNormalizedRange();
ExceptionCode ec = 0;
selectedRange->deleteContents(ec);
ASSERT(!ec);
setBaseAndExtent(selectedRange->startContainer(ec), selectedRange->startOffset(ec), selectedRange->startContainer(ec), selectedRange->startOffset(ec), ec);
ASSERT(!ec);
}
void DOMSelection::addRange(Range* r)
{
if (!m_frame)
return;
if (!r)
return;
SelectionController* 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) {
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));
}
}
}
static void clearSelectionIfNeeded(Frame* oldFocusedFrame, Frame* newFocusedFrame, Node* newFocusedNode)
{
if (!oldFocusedFrame || !newFocusedFrame)
return;
if (oldFocusedFrame->document() != newFocusedFrame->document())
return;
SelectionController* s = oldFocusedFrame->selection();
if (s->isNone())
return;
bool caretBrowsing = oldFocusedFrame->settings()->caretBrowsingEnabled();
if (caretBrowsing)
return;
Node* selectionStartNode = s->selection().start().deprecatedNode();
if (selectionStartNode == newFocusedNode || selectionStartNode->isDescendantOf(newFocusedNode) || selectionStartNode->shadowAncestorNode() == newFocusedNode)
return;
if (Node* mousePressNode = newFocusedFrame->eventHandler()->mousePressNode()) {
if (mousePressNode->renderer() && !mousePressNode->canStartSelection()) {
// Don't clear the selection for contentEditable elements, but do clear it for input and textarea. See bug 38696.
Node * root = s->rootEditableElement();
if (!root)
return;
if (Node* shadowAncestorNode = root->shadowAncestorNode()) {
if (!shadowAncestorNode->hasTagName(inputTag) && !shadowAncestorNode->hasTagName(textareaTag))
return;
}
}
}
s->clear();
}
void TypingCommand::forwardDeleteKeyPressed(TextGranularity granularity, bool killRing)
{
#if REMOVE_MARKERS_UPON_EDITING
document()->frame()->editor()->removeSpellAndCorrectionMarkersFromWordsToBeEdited(false);
#endif
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.
SelectionController selection;
selection.setSelection(endingSelection());
selection.modify(SelectionController::AlterationExtend, DirectionForward, granularity);
if (killRing && selection.isCaret() && granularity != CharacterGranularity)
selection.modify(SelectionController::AlterationExtend, DirectionForward, CharacterGranularity);
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.deprecatedEditingOffset()) {
setEndingSelection(VisibleSelection(endingSelection().end(), lastDeepEditingPositionForNode(downstreamEnd.node()), DOWNSTREAM));
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(SelectionController::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.node() != selectionToDelete.end().node())
extent = selectionToDelete.extent();
else {
int extraCharacters;
if (selectionToDelete.start().node() == selectionToDelete.end().node())
extraCharacters = selectionToDelete.end().deprecatedEditingOffset() - selectionToDelete.start().deprecatedEditingOffset();
else
extraCharacters = selectionToDelete.end().deprecatedEditingOffset();
extent = Position(extent.node(), extent.deprecatedEditingOffset() + 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() || !document()->frame()->selection()->shouldDeleteSelection(selectionToDelete))
return;
if (killRing)
document()->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)
{
#if REMOVE_MARKERS_UPON_EDITING
document()->frame()->editor()->removeSpellAndCorrectionMarkersFromWordsToBeEdited(false);
#endif
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;
SelectionController selection;
selection.setSelection(endingSelection());
selection.modify(SelectionController::AlterationExtend, DirectionBackward, granularity);
if (killRing && selection.isCaret() && granularity != CharacterGranularity)
selection.modify(SelectionController::AlterationExtend, DirectionBackward, CharacterGranularity);
if (endingSelection().visibleStart().previous(true).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(true).isNull() && makeEditableRootEmpty()) {
typingAddedToOpenCommand(DeleteKey);
return;
}
}
VisiblePosition visibleStart(endingSelection().visibleStart());
// If we have a caret selection on an empty cell, we have nothing to do.
if (isEmptyTableCell(visibleStart.deepEquivalent().node()))
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(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::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(positionAfterNode(table), endingSelection().start(), DOWNSTREAM));
typingAddedToOpenCommand(DeleteKey);
return;
}
selectionToDelete = selection.selection();
if (granularity == CharacterGranularity && selectionToDelete.end().node() == selectionToDelete.start().node() && selectionToDelete.end().deprecatedEditingOffset() - selectionToDelete.start().deprecatedEditingOffset() > 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() || !document()->frame()->selection()->shouldDeleteSelection(selectionToDelete))
return;
if (killRing)
document()->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);
}
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();
}
}