void HTMLTextAreaElement::handleBeforeTextInsertedEvent(
BeforeTextInsertedEvent* event) const {
DCHECK(event);
DCHECK(layoutObject());
int signedMaxLength = maxLength();
if (signedMaxLength < 0)
return;
unsigned unsignedMaxLength = static_cast<unsigned>(signedMaxLength);
const String& currentValue = innerEditorValue();
unsigned currentLength = computeLengthForAPIValue(currentValue);
if (currentLength + computeLengthForAPIValue(event->text()) <
unsignedMaxLength)
return;
// selectionLength represents the selection length of this text field to be
// removed by this insertion.
// If the text field has no focus, we don't need to take account of the
// selection length. The selection is the source of text drag-and-drop in
// that case, and nothing in the text field will be removed.
unsigned selectionLength = 0;
if (isFocused()) {
// TODO(xiaochengh): The use of updateStyleAndLayoutIgnorePendingStylesheets
// needs to be audited. See http://crbug.com/590369 for more details.
document().updateStyleAndLayoutIgnorePendingStylesheets();
selectionLength = computeLengthForAPIValue(
document().frame()->selection().selectedText());
}
DCHECK_GE(currentLength, selectionLength);
unsigned baseLength = currentLength - selectionLength;
unsigned appendableLength =
unsignedMaxLength > baseLength ? unsignedMaxLength - baseLength : 0;
event->setText(sanitizeUserInputValue(event->text(), appendableLength));
}
void HTMLTextFormControlElement::setInnerEditorValue(const String& value)
{
ASSERT(!openShadowRoot());
if (!isTextFormControl() || openShadowRoot())
return;
bool textIsChanged = value != innerEditorValue();
HTMLElement* innerEditor = innerEditorElement();
if (!textIsChanged && innerEditor->hasChildren())
return;
// If the last child is a trailing <br> that's appended below, remove it
// first so as to enable setInnerText() fast path of updating a text node.
if (isHTMLBRElement(innerEditor->lastChild()))
innerEditor->removeChild(innerEditor->lastChild(), ASSERT_NO_EXCEPTION);
// We don't use setTextContent. It triggers unnecessary paint.
if (value.isEmpty())
innerEditor->removeChildren();
else
replaceChildrenWithText(innerEditor, value, ASSERT_NO_EXCEPTION);
// Add <br> so that we can put the caret at the next line of the last
// newline.
addPlaceholderBreakElementIfNecessary();
if (textIsChanged && layoutObject()) {
if (AXObjectCache* cache = document().existingAXObjectCache())
cache->handleTextFormControlChanged(this);
}
}
void HTMLTextAreaElement::handleBeforeTextInsertedEvent(BeforeTextInsertedEvent* event) const
{
ASSERT(event);
ASSERT(renderer());
int signedMaxLength = maxLength();
if (signedMaxLength < 0)
return;
unsigned unsignedMaxLength = static_cast<unsigned>(signedMaxLength);
const String& currentValue = innerEditorValue();
unsigned currentLength = computeLengthForSubmission(currentValue);
if (currentLength + computeLengthForSubmission(event->text()) < unsignedMaxLength)
return;
// selectionLength represents the selection length of this text field to be
// removed by this insertion.
// If the text field has no focus, we don't need to take account of the
// selection length. The selection is the source of text drag-and-drop in
// that case, and nothing in the text field will be removed.
unsigned selectionLength = 0;
if (focused()) {
Position start, end;
document().frame()->selection().selection().toNormalizedPositions(start, end);
selectionLength = computeLengthForSubmission(plainText(start, end));
}
ASSERT(currentLength >= selectionLength);
unsigned baseLength = currentLength - selectionLength;
unsigned appendableLength = unsignedMaxLength > baseLength ? unsignedMaxLength - baseLength : 0;
event->setText(sanitizeUserInputValue(event->text(), appendableLength));
}
void HTMLTextAreaElement::updateValue() const {
if (m_valueIsUpToDate)
return;
m_value = innerEditorValue();
const_cast<HTMLTextAreaElement*>(this)->m_valueIsUpToDate = true;
const_cast<HTMLTextAreaElement*>(this)->notifyFormStateChanged();
m_isDirty = true;
const_cast<HTMLTextAreaElement*>(this)->updatePlaceholderVisibility();
}
void HTMLTextFormControlElement::setRangeText(const String& replacement, unsigned start, unsigned end, const String& selectionMode, ExceptionState& exceptionState)
{
if (start > end) {
exceptionState.throwDOMException(IndexSizeError, "The provided start value (" + String::number(start) + ") is larger than the provided end value (" + String::number(end) + ").");
return;
}
if (hasAuthorShadowRoot())
return;
String text = innerEditorValue();
unsigned textLength = text.length();
unsigned replacementLength = replacement.length();
unsigned newSelectionStart = selectionStart();
unsigned newSelectionEnd = selectionEnd();
start = std::min(start, textLength);
end = std::min(end, textLength);
if (start < end)
text.replace(start, end - start, replacement);
else
text.insert(replacement, start);
setInnerEditorValue(text);
// FIXME: What should happen to the value (as in value()) if there's no renderer?
if (!renderer())
return;
subtreeHasChanged();
if (equalIgnoringCase(selectionMode, "select")) {
newSelectionStart = start;
newSelectionEnd = start + replacementLength;
} else if (equalIgnoringCase(selectionMode, "start"))
newSelectionStart = newSelectionEnd = start;
else if (equalIgnoringCase(selectionMode, "end"))
newSelectionStart = newSelectionEnd = start + replacementLength;
else {
// Default is "preserve".
long delta = replacementLength - (end - start);
if (newSelectionStart > end)
newSelectionStart += delta;
else if (newSelectionStart > start)
newSelectionStart = start;
if (newSelectionEnd > end)
newSelectionEnd += delta;
else if (newSelectionEnd > start)
newSelectionEnd = start + replacementLength;
}
setSelectionRange(newSelectionStart, newSelectionEnd, SelectionHasNoDirection);
}
void HTMLTextFormControlElement::setRangeText(const String& replacement, unsigned start, unsigned end, const String& selectionMode, ExceptionState& exceptionState)
{
if (start > end) {
exceptionState.throwDOMException(IndexSizeError, "The provided start value (" + String::number(start) + ") is larger than the provided end value (" + String::number(end) + ").");
return;
}
if (openShadowRoot())
return;
String text = innerEditorValue();
unsigned textLength = text.length();
unsigned replacementLength = replacement.length();
unsigned newSelectionStart = selectionStart();
unsigned newSelectionEnd = selectionEnd();
start = std::min(start, textLength);
end = std::min(end, textLength);
if (start < end)
text.replace(start, end - start, replacement);
else
text.insert(replacement, start);
setValue(text, TextFieldEventBehavior::DispatchNoEvent);
if (selectionMode == "select") {
newSelectionStart = start;
newSelectionEnd = start + replacementLength;
} else if (selectionMode == "start") {
newSelectionStart = newSelectionEnd = start;
} else if (selectionMode == "end") {
newSelectionStart = newSelectionEnd = start + replacementLength;
} else {
ASSERT(selectionMode == "preserve");
long delta = replacementLength - (end - start);
if (newSelectionStart > end)
newSelectionStart += delta;
else if (newSelectionStart > start)
newSelectionStart = start;
if (newSelectionEnd > end)
newSelectionEnd += delta;
else if (newSelectionEnd > start)
newSelectionEnd = start + replacementLength;
}
setSelectionRange(newSelectionStart, newSelectionEnd, SelectionHasNoDirection);
}
void HTMLTextFormControlElement::setSelectionRange(int start, int end, TextFieldSelectionDirection direction, NeedToDispatchSelectEvent eventBehaviour, SelectionOption selectionOption)
{
if (openShadowRoot() || !isTextFormControl())
return;
const int editorValueLength = static_cast<int>(innerEditorValue().length());
ASSERT(editorValueLength >= 0);
end = std::max(std::min(end, editorValueLength), 0);
start = std::min(std::max(start, 0), end);
cacheSelection(start, end, direction);
if (selectionOption == NotChangeSelection || (selectionOption == ChangeSelectionIfFocused && document().focusedElement() != this) || !inShadowIncludingDocument()) {
if (eventBehaviour == DispatchSelectEvent)
scheduleSelectEvent();
return;
}
LocalFrame* frame = document().frame();
HTMLElement* innerEditor = innerEditorElement();
if (!frame || !innerEditor)
return;
Position startPosition = positionForIndex(innerEditor, start);
Position endPosition = start == end ? startPosition : positionForIndex(innerEditor, end);
ASSERT(start == indexForPosition(innerEditor, startPosition));
ASSERT(end == indexForPosition(innerEditor, endPosition));
#if ENABLE(ASSERT)
// startPosition and endPosition can be null position for example when
// "-webkit-user-select: none" style attribute is specified.
if (startPosition.isNotNull() && endPosition.isNotNull()) {
ASSERT(startPosition.anchorNode()->shadowHost() == this
&& endPosition.anchorNode()->shadowHost() == this);
}
#endif // ENABLE(ASSERT)
VisibleSelection newSelection;
if (direction == SelectionHasBackwardDirection)
newSelection.setWithoutValidation(endPosition, startPosition);
else
newSelection.setWithoutValidation(startPosition, endPosition);
newSelection.setIsDirectional(direction != SelectionHasNoDirection);
frame->selection().setSelection(newSelection, FrameSelection::DoNotAdjustInFlatTree | FrameSelection::CloseTyping | FrameSelection::ClearTypingStyle | (selectionOption == ChangeSelectionAndFocus ? 0 : FrameSelection::DoNotSetFocus));
if (eventBehaviour == DispatchSelectEvent)
scheduleSelectEvent();
}
void HTMLTextFormControlElement::setInnerEditorValue(const String& value)
{
ASSERT(!hasAuthorShadowRoot());
if (!isTextFormControl() || hasAuthorShadowRoot())
return;
bool textIsChanged = value != innerEditorValue();
if (textIsChanged || !innerEditorElement()->hasChildren()) {
if (textIsChanged && renderer()) {
if (AXObjectCache* cache = document().existingAXObjectCache())
cache->postNotification(this, AXObjectCache::AXValueChanged, false);
}
innerEditorElement()->setInnerText(value, ASSERT_NO_EXCEPTION);
if (value.endsWith('\n') || value.endsWith('\r'))
innerEditorElement()->appendChild(HTMLBRElement::create(document()));
}
}
void HTMLTextFormControlElement::setInnerEditorValue(const String& value)
{
ASSERT(!hasOpenShadowRoot());
if (!isTextFormControl() || hasOpenShadowRoot())
return;
bool textIsChanged = value != innerEditorValue();
if (textIsChanged || !innerEditorElement()->hasChildren()) {
if (textIsChanged && layoutObject()) {
if (AXObjectCache* cache = document().existingAXObjectCache())
cache->handleTextFormControlChanged(this);
}
innerEditorElement()->setInnerText(value, ASSERT_NO_EXCEPTION);
if (value.endsWith('\n') || value.endsWith('\r'))
innerEditorElement()->appendChild(HTMLBRElement::create(document()));
}
}
