static gboolean webkitAccessibleTextSetSelection(AtkText* text, gint selectionNum, gint startOffset, gint endOffset)
{
// WebCore does not support multiple selection, so anything but 0 does not make sense for now.
if (selectionNum)
return FALSE;
AccessibilityObject* coreObject = core(text);
if (!coreObject->isAccessibilityRenderObject())
return FALSE;
// Consider -1 and out-of-bound values and correct them to length
gint textCount = webkitAccessibleTextGetCharacterCount(text);
if (startOffset < 0 || startOffset > textCount)
startOffset = textCount;
if (endOffset < 0 || endOffset > textCount)
endOffset = textCount;
// We need to adjust the offsets for the list item marker.
int offsetAdjustment = offsetAdjustmentForListItem(coreObject);
if (offsetAdjustment) {
if (startOffset < offsetAdjustment || endOffset < offsetAdjustment)
return FALSE;
startOffset = atkOffsetToWebCoreOffset(text, startOffset);
endOffset = atkOffsetToWebCoreOffset(text, endOffset);
}
PlainTextRange textRange(startOffset, endOffset - startOffset);
VisiblePositionRange range = coreObject->visiblePositionRangeForRange(textRange);
if (range.isNull())
return FALSE;
coreObject->setSelectedVisiblePositionRange(range);
return TRUE;
}
static gboolean webkitAccessibleTextSetCaretOffset(AtkText* text, gint offset)
{
AccessibilityObject* coreObject = core(text);
if (!coreObject->isAccessibilityRenderObject())
return FALSE;
RenderObject* renderer = coreObject->renderer();
if (renderer && renderer->isListItem()) {
String markerText = toRenderListItem(renderer)->markerTextWithSuffix();
int markerLength = markerText.length();
if (offset < markerLength)
return FALSE;
// We need to adjust the offset for list items.
offset -= markerLength;
}
PlainTextRange textRange(offset, 0);
VisiblePositionRange range = coreObject->visiblePositionRangeForRange(textRange);
if (range.isNull())
return FALSE;
coreObject->setSelectedVisiblePositionRange(range);
return TRUE;
}
int AccessibilityObject::lengthForVisiblePositionRange(const VisiblePositionRange& visiblePositionRange) const
{
// FIXME: Multi-byte support
if (visiblePositionRange.isNull())
return -1;
int length = 0;
RefPtr<Range> range = makeRange(visiblePositionRange.start, visiblePositionRange.end);
for (TextIterator it(range.get()); !it.atEnd(); it.advance()) {
// non-zero length means textual node, zero length means replaced node (AKA "attachments" in AX)
if (it.length() != 0) {
length += it.length();
} else {
// locate the node and starting offset for this replaced range
int exception = 0;
Node* node = it.range()->startContainer(exception);
ASSERT(node == it.range()->endContainer(exception));
int offset = it.range()->startOffset(exception);
if (replacedNodeNeedsCharacter(node->childNode(offset)))
length++;
}
}
return length;
}
String AccessibilityObject::stringForVisiblePositionRange(const VisiblePositionRange& visiblePositionRange) const
{
if (visiblePositionRange.isNull())
return String();
Vector<UChar> resultVector;
RefPtr<Range> range = makeRange(visiblePositionRange.start, visiblePositionRange.end);
for (TextIterator it(range.get()); !it.atEnd(); it.advance()) {
// non-zero length means textual node, zero length means replaced node (AKA "attachments" in AX)
if (it.length() != 0) {
resultVector.append(it.characters(), it.length());
} else {
// locate the node and starting offset for this replaced range
int exception = 0;
Node* node = it.range()->startContainer(exception);
ASSERT(node == it.range()->endContainer(exception));
int offset = it.range()->startOffset(exception);
if (replacedNodeNeedsCharacter(node->childNode(offset))) {
resultVector.append(objectReplacementCharacter);
}
}
}
return String::adopt(resultVector);
}
String AccessibilityObject::stringForVisiblePositionRange(const VisiblePositionRange& visiblePositionRange) const
{
if (visiblePositionRange.isNull())
return String();
StringBuilder builder;
RefPtr<Range> range = makeRange(visiblePositionRange.start, visiblePositionRange.end);
for (TextIterator it(range.get()); !it.atEnd(); it.advance()) {
// non-zero length means textual node, zero length means replaced node (AKA "attachments" in AX)
if (it.length()) {
// Add a textual representation for list marker text
String listMarkerText = listMarkerTextForNodeAndPosition(it.node(), visiblePositionRange.start);
if (!listMarkerText.isEmpty())
builder.append(listMarkerText);
builder.append(it.characters(), it.length());
} else {
// locate the node and starting offset for this replaced range
int exception = 0;
Node* node = it.range()->startContainer(exception);
ASSERT(node == it.range()->endContainer(exception));
int offset = it.range()->startOffset(exception);
if (replacedNodeNeedsCharacter(node->childNode(offset)))
builder.append(objectReplacementCharacter);
}
}
return builder.toString();
}
static gboolean webkitAccessibleTextSetSelection(AtkText* text, gint selectionNum, gint startOffset, gint endOffset)
{
// WebCore does not support multiple selection, so anything but 0 does not make sense for now.
if (selectionNum)
return FALSE;
AccessibilityObject* coreObject = core(text);
if (!coreObject->isAccessibilityRenderObject())
return FALSE;
// Consider -1 and out-of-bound values and correct them to length
gint textCount = webkitAccessibleTextGetCharacterCount(text);
if (startOffset < 0 || startOffset > textCount)
startOffset = textCount;
if (endOffset < 0 || endOffset > textCount)
endOffset = textCount;
// We need to adjust the offsets for the list item marker.
RenderObject* renderer = coreObject->renderer();
if (renderer && renderer->isListItem()) {
String markerText = toRenderListItem(renderer)->markerTextWithSuffix();
int markerLength = markerText.length();
if (startOffset < markerLength || endOffset < markerLength)
return FALSE;
startOffset -= markerLength;
endOffset -= markerLength;
}
PlainTextRange textRange(startOffset, endOffset - startOffset);
VisiblePositionRange range = coreObject->visiblePositionRangeForRange(textRange);
if (range.isNull())
return FALSE;
coreObject->setSelectedVisiblePositionRange(range);
return TRUE;
}
static gboolean webkitAccessibleTextSetCaretOffset(AtkText* text, gint offset)
{
AccessibilityObject* coreObject = core(text);
if (!coreObject->isAccessibilityRenderObject())
return FALSE;
// We need to adjust the offsets for the list item marker.
int offsetAdjustment = offsetAdjustmentForListItem(coreObject);
if (offsetAdjustment) {
if (offset < offsetAdjustment)
return FALSE;
offset = atkOffsetToWebCoreOffset(text, offset);
}
PlainTextRange textRange(offset, 0);
VisiblePositionRange range = coreObject->visiblePositionRangeForRange(textRange);
if (range.isNull())
return FALSE;
coreObject->setSelectedVisiblePositionRange(range);
return TRUE;
}