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());
unsigned selectionLength = numGraphemeClusters(plainText(document()->frame()->selection()->selection().toNormalizedRange().get()));
ASSERT(currentLength >= selectionLength);
unsigned baseLength = currentLength - selectionLength;
unsigned appendableLength = unsignedMaxLength > baseLength ? unsignedMaxLength - baseLength : 0;
event->setText(sanitizeUserInputValue(event->text(), appendableLength));
}
bool HTMLTextAreaElement::tooLong() const
{
// Return false for the default value even if it is longer than maxLength.
if (!m_isDirty)
return false;
int max = maxLength();
if (max < 0)
return false;
return numGraphemeClusters(value()) > static_cast<unsigned>(max);
}
bool HTMLTextAreaElement::tooLong(const String& value, NeedsToCheckDirtyFlag check) const
{
// Return false for the default value even if it is longer than maxLength.
if (check == CheckDirtyFlag && !m_isDirty)
return false;
int max = maxLength();
if (max < 0)
return false;
return numGraphemeClusters(value) > static_cast<unsigned>(max);
}
static AtomicString makeVisibleEmptyValue(const Vector<String>& symbols)
{
unsigned maximumLength = 0;
for (unsigned index = 0; index < symbols.size(); ++index)
maximumLength = std::max(maximumLength, numGraphemeClusters(symbols[index]));
StringBuilder builder;
builder.reserveCapacity(maximumLength);
for (unsigned length = 0; length < maximumLength; ++length)
builder.append('-');
return builder.toAtomicString();
}
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));
}
String InputType::validationMessage() const
{
String value = element().value();
// The order of the following checks is meaningful. e.g. We'd like to show the
// badInput message even if the control has other validation errors.
if (hasBadInput())
return badInputText();
if (valueMissing(value))
return valueMissingText();
if (typeMismatch())
return typeMismatchText();
if (patternMismatch(value))
return validationMessagePatternMismatchText();
if (element().tooLong())
return validationMessageTooLongText(numGraphemeClusters(value), element().maxLength());
if (!isSteppable())
return emptyString();
const Decimal numericValue = parseToNumberOrNaN(value);
if (!numericValue.isFinite())
return emptyString();
StepRange stepRange(createStepRange(RejectAny));
if (numericValue < stepRange.minimum())
return validationMessageRangeUnderflowText(serialize(stepRange.minimum()));
if (numericValue > stepRange.maximum())
return validationMessageRangeOverflowText(serialize(stepRange.maximum()));
if (stepRange.stepMismatch(numericValue)) {
const String stepString = stepRange.hasStep() ? serializeForNumberType(stepRange.step() / stepRange.stepScaleFactor()) : emptyString();
return validationMessageStepMismatchText(serialize(stepRange.stepBase()), stepString);
}
return emptyString();
}
static inline unsigned computeLengthForSubmission(const String& text)
{
return numGraphemeClusters(text) + numberOfLineBreaks(text);
}
