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 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 = innerTextValue();
unsigned numberOfLineBreaksInCurrentValue = numberOfLineBreaks(currentValue);
if (upperBoundForLengthForSubmission(currentValue, numberOfLineBreaksInCurrentValue)
+ upperBoundForLengthForSubmission(event->text(), numberOfLineBreaks(event->text())) < unsignedMaxLength)
return;
unsigned currentLength = computeLengthForSubmission(currentValue, numberOfLineBreaksInCurrentValue);
// 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 = focused() ? computeLengthForSubmission(plainText(document().frame()->selection().selection().toNormalizedRange().get())) : 0;
ASSERT(currentLength >= selectionLength);
unsigned baseLength = currentLength - selectionLength;
unsigned appendableLength = unsignedMaxLength > baseLength ? unsignedMaxLength - baseLength : 0;
event->setText(sanitizeUserInputValue(event->text(), appendableLength));
}
void HTMLTextAreaElement::handleBeforeTextInsertedEvent(BeforeTextInsertedEvent* event) const
{
ASSERT(event);
ASSERT(layoutObject());
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()) {
const EphemeralRange range = document().frame()->selection().selection().toNormalizedEphemeralRange();
selectionLength = computeLengthForSubmission(plainText(range));
}
ASSERT(currentLength >= selectionLength);
unsigned baseLength = currentLength - selectionLength;
unsigned appendableLength = unsignedMaxLength > baseLength ? unsignedMaxLength - baseLength : 0;
event->setText(sanitizeUserInputValue(event->text(), appendableLength));
}
void HTMLTextAreaElement::handleBeforeTextInsertedEvent(BeforeTextInsertedEvent* event) const
{
ASSERT(event);
ASSERT(renderer());
int signedMaxLength = maxLength();
if (signedMaxLength < 0)
return;
unsigned unsignedMaxLength = static_cast<unsigned>(signedMaxLength);
unsigned currentLength = toRenderTextControl(renderer())->text().numGraphemeClusters();
unsigned selectionLength = plainText(document()->frame()->selection()->selection().toNormalizedRange().get()).numGraphemeClusters();
ASSERT(currentLength >= selectionLength);
unsigned baseLength = currentLength - selectionLength;
unsigned appendableLength = unsignedMaxLength > baseLength ? unsignedMaxLength - baseLength : 0;
event->setText(sanitizeUserInputValue(event->text(), appendableLength));
}
void HTMLTextAreaElement::handleBeforeTextInsertedEvent(BeforeTextInsertedEvent* event) const
{
ASSERT(event);
ASSERT(renderer());
int signedMaxLength = maxLength();
if (signedMaxLength < 0)
return;
unsigned unsignedMaxLength = static_cast<unsigned>(signedMaxLength);
unsigned currentLength = numGraphemeClusters(toRenderTextControl(renderer())->text());
// 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 = focused() ? numGraphemeClusters(plainText(document()->frame()->selection()->selection().toNormalizedRange().get())) : 0;
ASSERT(currentLength >= selectionLength);
unsigned baseLength = currentLength - selectionLength;
unsigned appendableLength = unsignedMaxLength > baseLength ? unsignedMaxLength - baseLength : 0;
event->setText(sanitizeUserInputValue(event->text(), appendableLength));
}
