void visibleTextQuads(const VisibleSelection& selection, Vector<FloatQuad>& quads)
{
if (!selection.isRange())
return;
ASSERT(selection.firstRange());
visibleTextQuads(*(selection.firstRange()), quads, true /* useSelectionHeight */);
}
void visibleTextQuads(const VisibleSelection& selection, Vector<FloatQuad>& quads)
{
if (!selection.isRange())
return;
// Make sure that both start and end have valid nodes associated otherwise
// this can crash. See PR 220628.
if (!selection.start().anchorNode() || !selection.end().anchorNode())
return;
visibleTextQuads(*(selection.firstRange()), quads, true /* useSelectionHeight */);
}
static gint webkitAccessibleTextGetNSelections(AtkText* text)
{
AccessibilityObject* coreObject = core(text);
VisibleSelection selection = coreObject->selection();
// Only range selections are needed for the purpose of this method
if (!selection.isRange())
return 0;
// We don't support multiple selections for now, so there's only
// two possibilities
// Also, we don't want to do anything if the selection does not
// belong to the currently selected object. We have to check since
// there's no way to get the selection for a given object, only
// the global one (the API is a bit confusing)
return selectionBelongsToObject(coreObject, selection) ? 1 : 0;
}
static void emitTextSelectionChange(AccessibilityObject* object, VisibleSelection selection, int offset)
{
AtkObject* axObject = object->wrapper();
if (!axObject || !ATK_IS_TEXT(axObject))
return;
// We need to adjust the offset for the list item marker in Left-To-Right text because
// the list item marker is exposed through the text of the accessible list item rather
// than through a separate accessible object.
RenderObject* renderer = object->renderer();
if (is<RenderListItem>(renderer) && renderer->style().direction() == LTR)
offset += downcast<RenderListItem>(*renderer).markerTextWithSuffix().length();
g_signal_emit_by_name(axObject, "text-caret-moved", offset);
if (selection.isRange())
g_signal_emit_by_name(axObject, "text-selection-changed");
}
bool InsertListCommand::modifyRange()
{
VisibleSelection selection = selectionForParagraphIteration(endingSelection());
ASSERT(selection.isRange());
VisiblePosition startOfSelection = selection.visibleStart();
VisiblePosition endOfSelection = selection.visibleEnd();
VisiblePosition startOfLastParagraph = startOfParagraph(endOfSelection);
if (startOfParagraph(startOfSelection) == startOfLastParagraph)
return false;
Node* startList = enclosingList(startOfSelection.deepEquivalent().node());
Node* endList = enclosingList(endOfSelection.deepEquivalent().node());
if (!startList || startList != endList)
m_forceCreateList = true;
setEndingSelection(startOfSelection);
doApply();
// Fetch the start of the selection after moving the first paragraph,
// because moving the paragraph will invalidate the original start.
// We'll use the new start to restore the original selection after
// we modified all selected paragraphs.
startOfSelection = endingSelection().visibleStart();
VisiblePosition startOfCurrentParagraph = startOfNextParagraph(startOfSelection);
while (startOfCurrentParagraph != startOfLastParagraph) {
// doApply() may operate on and remove the last paragraph of the selection from the document
// if it's in the same list item as startOfCurrentParagraph. Return early to avoid an
// infinite loop and because there is no more work to be done.
// FIXME(<rdar://problem/5983974>): The endingSelection() may be incorrect here. Compute
// the new location of endOfSelection and use it as the end of the new selection.
if (!startOfLastParagraph.deepEquivalent().node()->inDocument())
return true;
setEndingSelection(startOfCurrentParagraph);
doApply();
startOfCurrentParagraph = startOfNextParagraph(endingSelection().visibleStart());
}
setEndingSelection(endOfSelection);
doApply();
// Fetch the end of the selection, for the reason mentioned above.
endOfSelection = endingSelection().visibleEnd();
setEndingSelection(VisibleSelection(startOfSelection, endOfSelection));
m_forceCreateList = false;
return true;
}
// This needs to be static so it can be called by canIncreaseSelectionListLevel and canDecreaseSelectionListLevel
static bool getStartEndListChildren(const VisibleSelection& selection, Node*& start, Node*& end)
{
if (selection.isNone())
return false;
// start must be in a list child
Node* startListChild = enclosingListChild(selection.start().anchorNode());
if (!startListChild)
return false;
// end must be in a list child
Node* endListChild = selection.isRange() ? enclosingListChild(selection.end().anchorNode()) : startListChild;
if (!endListChild)
return false;
// For a range selection we want the following behavior:
// - the start and end must be within the same overall list
// - the start must be at or above the level of the rest of the range
// - if the end is anywhere in a sublist lower than start, the whole sublist gets moved
// In terms of this function, this means:
// - endListChild must start out being be a sibling of startListChild, or be in a
// sublist of startListChild or a sibling
// - if endListChild is in a sublist of startListChild or a sibling, it must be adjusted
// to be the ancestor that is startListChild or its sibling
while (startListChild->parentNode() != endListChild->parentNode()) {
endListChild = endListChild->parentNode();
if (!endListChild)
return false;
}
// if the selection ends on a list item with a sublist, include the entire sublist
if (endListChild->renderer()->isListItem()) {
RenderObject* r = endListChild->renderer()->nextSibling();
if (r && isListHTMLElement(r->node()))
endListChild = r->node();
}
start = startListChild;
end = endListChild;
return true;
}
static void writeSelection(TextStream& ts, const RenderObject* o)
{
Node* n = o->node();
if (!n || !n->isDocumentNode())
return;
Document* doc = static_cast<Document*>(n);
Frame* frame = doc->frame();
if (!frame)
return;
VisibleSelection selection = frame->selection()->selection();
if (selection.isCaret()) {
ts << "caret: position " << selection.start().deprecatedEditingOffset() << " of " << nodePosition(selection.start().node());
if (selection.affinity() == UPSTREAM)
ts << " (upstream affinity)";
ts << "\n";
} else if (selection.isRange())
ts << "selection start: position " << selection.start().deprecatedEditingOffset() << " of " << nodePosition(selection.start().node()) << "\n"
<< "selection end: position " << selection.end().deprecatedEditingOffset() << " of " << nodePosition(selection.end().node()) << "\n";
}
void InsertListCommand::doApply()
{
if (!endingSelection().isNonOrphanedCaretOrRange())
return;
if (!endingSelection().rootEditableElement())
return;
VisiblePosition visibleEnd = endingSelection().visibleEnd();
VisiblePosition visibleStart = endingSelection().visibleStart();
// When a selection ends at the start of a paragraph, we rarely paint
// the selection gap before that paragraph, because there often is no gap.
// In a case like this, it's not obvious to the user that the selection
// ends "inside" that paragraph, so it would be confusing if InsertUn{Ordered}List
// operated on that paragraph.
// FIXME: We paint the gap before some paragraphs that are indented with left
// margin/padding, but not others. We should make the gap painting more consistent and
// then use a left margin/padding rule here.
if (visibleEnd != visibleStart && isStartOfParagraph(visibleEnd, CanSkipOverEditingBoundary)) {
setEndingSelection(VisibleSelection(visibleStart, visibleEnd.previous(CannotCrossEditingBoundary), endingSelection().isDirectional()));
if (!endingSelection().rootEditableElement())
return;
}
const HTMLQualifiedName& listTag = (m_type == OrderedList) ? olTag : ulTag;
if (endingSelection().isRange()) {
bool forceListCreation = false;
VisibleSelection selection = selectionForParagraphIteration(endingSelection());
ASSERT(selection.isRange());
VisiblePosition startOfSelection = selection.visibleStart();
VisiblePosition endOfSelection = selection.visibleEnd();
VisiblePosition startOfLastParagraph = startOfParagraph(endOfSelection, CanSkipOverEditingBoundary);
RefPtrWillBeRawPtr<Range> currentSelection = endingSelection().firstRange();
RefPtrWillBeRawPtr<ContainerNode> scopeForStartOfSelection = nullptr;
RefPtrWillBeRawPtr<ContainerNode> scopeForEndOfSelection = nullptr;
// FIXME: This is an inefficient way to keep selection alive because
// indexForVisiblePosition walks from the beginning of the document to the
// endOfSelection everytime this code is executed. But not using index is hard
// because there are so many ways we can los eselection inside doApplyForSingleParagraph.
int indexForStartOfSelection = indexForVisiblePosition(startOfSelection, scopeForStartOfSelection);
int indexForEndOfSelection = indexForVisiblePosition(endOfSelection, scopeForEndOfSelection);
if (startOfParagraph(startOfSelection, CanSkipOverEditingBoundary) != startOfLastParagraph) {
forceListCreation = !selectionHasListOfType(selection, listTag);
VisiblePosition startOfCurrentParagraph = startOfSelection;
while (startOfCurrentParagraph.isNotNull() && !inSameParagraph(startOfCurrentParagraph, startOfLastParagraph, CanCrossEditingBoundary)) {
// doApply() may operate on and remove the last paragraph of the selection from the document
// if it's in the same list item as startOfCurrentParagraph. Return early to avoid an
// infinite loop and because there is no more work to be done.
// FIXME(<rdar://problem/5983974>): The endingSelection() may be incorrect here. Compute
// the new location of endOfSelection and use it as the end of the new selection.
if (!startOfLastParagraph.deepEquivalent().inDocument())
return;
setEndingSelection(startOfCurrentParagraph);
// Save and restore endOfSelection and startOfLastParagraph when necessary
// since moveParagraph and movePragraphWithClones can remove nodes.
doApplyForSingleParagraph(forceListCreation, listTag, *currentSelection);
if (endOfSelection.isNull() || endOfSelection.isOrphan() || startOfLastParagraph.isNull() || startOfLastParagraph.isOrphan()) {
endOfSelection = visiblePositionForIndex(indexForEndOfSelection, scopeForEndOfSelection.get());
// If endOfSelection is null, then some contents have been deleted from the document.
// This should never happen and if it did, exit early immediately because we've lost the loop invariant.
ASSERT(endOfSelection.isNotNull());
if (endOfSelection.isNull() || !endOfSelection.rootEditableElement())
return;
startOfLastParagraph = startOfParagraph(endOfSelection, CanSkipOverEditingBoundary);
}
startOfCurrentParagraph = startOfNextParagraph(endingSelection().visibleStart());
}
setEndingSelection(endOfSelection);
}
doApplyForSingleParagraph(forceListCreation, listTag, *currentSelection);
// Fetch the end of the selection, for the reason mentioned above.
if (endOfSelection.isNull() || endOfSelection.isOrphan()) {
endOfSelection = visiblePositionForIndex(indexForEndOfSelection, scopeForEndOfSelection.get());
if (endOfSelection.isNull())
return;
}
if (startOfSelection.isNull() || startOfSelection.isOrphan()) {
startOfSelection = visiblePositionForIndex(indexForStartOfSelection, scopeForStartOfSelection.get());
if (startOfSelection.isNull())
return;
}
setEndingSelection(VisibleSelection(startOfSelection, endOfSelection, endingSelection().isDirectional()));
return;
}
ASSERT(endingSelection().firstRange());
doApplyForSingleParagraph(false, listTag, *endingSelection().firstRange());
}
void InsertListCommand::doApply(EditingState* editingState) {
// Only entry points are Editor::Command::execute and
// IndentOutdentCommand::outdentParagraph, both of which ensure clean layout.
DCHECK(!document().needsLayoutTreeUpdate());
if (!endingSelection().isNonOrphanedCaretOrRange())
return;
if (!endingSelection().rootEditableElement())
return;
VisiblePosition visibleEnd = endingSelection().visibleEnd();
VisiblePosition visibleStart = endingSelection().visibleStart();
// When a selection ends at the start of a paragraph, we rarely paint
// the selection gap before that paragraph, because there often is no gap.
// In a case like this, it's not obvious to the user that the selection
// ends "inside" that paragraph, so it would be confusing if
// InsertUn{Ordered}List operated on that paragraph.
// FIXME: We paint the gap before some paragraphs that are indented with left
// margin/padding, but not others. We should make the gap painting more
// consistent and then use a left margin/padding rule here.
if (visibleEnd.deepEquivalent() != visibleStart.deepEquivalent() &&
isStartOfParagraph(visibleEnd, CanSkipOverEditingBoundary)) {
setEndingSelection(createVisibleSelection(
visibleStart,
previousPositionOf(visibleEnd, CannotCrossEditingBoundary),
endingSelection().isDirectional()));
if (!endingSelection().rootEditableElement())
return;
}
const HTMLQualifiedName& listTag = (m_type == OrderedList) ? olTag : ulTag;
if (endingSelection().isRange()) {
bool forceListCreation = false;
VisibleSelection selection =
selectionForParagraphIteration(endingSelection());
DCHECK(selection.isRange());
VisiblePosition visibleStartOfSelection = selection.visibleStart();
VisiblePosition visibleEndOfSelection = selection.visibleEnd();
PositionWithAffinity startOfSelection =
visibleStartOfSelection.toPositionWithAffinity();
PositionWithAffinity endOfSelection =
visibleEndOfSelection.toPositionWithAffinity();
Position startOfLastParagraph =
startOfParagraph(visibleEndOfSelection, CanSkipOverEditingBoundary)
.deepEquivalent();
Range* currentSelection = firstRangeOf(endingSelection());
ContainerNode* scopeForStartOfSelection = nullptr;
ContainerNode* scopeForEndOfSelection = nullptr;
// FIXME: This is an inefficient way to keep selection alive because
// indexForVisiblePosition walks from the beginning of the document to the
// visibleEndOfSelection everytime this code is executed. But not using
// index is hard because there are so many ways we can lose selection inside
// doApplyForSingleParagraph.
int indexForStartOfSelection = indexForVisiblePosition(
visibleStartOfSelection, scopeForStartOfSelection);
int indexForEndOfSelection =
indexForVisiblePosition(visibleEndOfSelection, scopeForEndOfSelection);
if (startOfParagraph(visibleStartOfSelection, CanSkipOverEditingBoundary)
.deepEquivalent() != startOfLastParagraph) {
forceListCreation = !selectionHasListOfType(selection, listTag);
VisiblePosition startOfCurrentParagraph = visibleStartOfSelection;
while (inSameTreeAndOrdered(startOfCurrentParagraph.deepEquivalent(),
startOfLastParagraph) &&
!inSameParagraph(startOfCurrentParagraph,
createVisiblePosition(startOfLastParagraph),
CanCrossEditingBoundary)) {
// doApply() may operate on and remove the last paragraph of the
// selection from the document if it's in the same list item as
// startOfCurrentParagraph. Return early to avoid an infinite loop and
// because there is no more work to be done.
// FIXME(<rdar://problem/5983974>): The endingSelection() may be
// incorrect here. Compute the new location of visibleEndOfSelection
// and use it as the end of the new selection.
if (!startOfLastParagraph.isConnected())
return;
setEndingSelection(startOfCurrentParagraph);
// Save and restore visibleEndOfSelection and startOfLastParagraph when
// necessary since moveParagraph and movePragraphWithClones can remove
// nodes.
bool singleParagraphResult = doApplyForSingleParagraph(
forceListCreation, listTag, *currentSelection, editingState);
if (editingState->isAborted())
return;
if (!singleParagraphResult)
break;
document().updateStyleAndLayoutIgnorePendingStylesheets();
// Make |visibleEndOfSelection| valid again.
if (!endOfSelection.isConnected() ||
!startOfLastParagraph.isConnected()) {
visibleEndOfSelection = visiblePositionForIndex(
indexForEndOfSelection, scopeForEndOfSelection);
endOfSelection = visibleEndOfSelection.toPositionWithAffinity();
// If visibleEndOfSelection is null, then some contents have been
// deleted from the document. This should never happen and if it did,
// exit early immediately because we've lost the loop invariant.
DCHECK(visibleEndOfSelection.isNotNull());
if (visibleEndOfSelection.isNull() ||
!rootEditableElementOf(visibleEndOfSelection))
return;
startOfLastParagraph = startOfParagraph(visibleEndOfSelection,
CanSkipOverEditingBoundary)
.deepEquivalent();
} else {
visibleEndOfSelection = createVisiblePosition(endOfSelection);
}
startOfCurrentParagraph =
startOfNextParagraph(endingSelection().visibleStart());
}
setEndingSelection(visibleEndOfSelection);
}
doApplyForSingleParagraph(forceListCreation, listTag, *currentSelection,
editingState);
if (editingState->isAborted())
return;
document().updateStyleAndLayoutIgnorePendingStylesheets();
// Fetch the end of the selection, for the reason mentioned above.
if (!endOfSelection.isConnected()) {
visibleEndOfSelection = visiblePositionForIndex(indexForEndOfSelection,
scopeForEndOfSelection);
if (visibleEndOfSelection.isNull())
return;
} else {
visibleEndOfSelection = createVisiblePosition(endOfSelection);
}
if (!startOfSelection.isConnected()) {
visibleStartOfSelection = visiblePositionForIndex(
indexForStartOfSelection, scopeForStartOfSelection);
if (visibleStartOfSelection.isNull())
return;
} else {
visibleStartOfSelection = createVisiblePosition(startOfSelection);
}
setEndingSelection(
createVisibleSelection(visibleStartOfSelection, visibleEndOfSelection,
endingSelection().isDirectional()));
return;
}
DCHECK(firstRangeOf(endingSelection()));
doApplyForSingleParagraph(false, listTag, *firstRangeOf(endingSelection()),
editingState);
}
