wmlinputelement.cpp

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void WMLInputElement::defaultEventHandler(Event* evt)
{
    bool clickDefaultFormButton = false;

    if (evt->type() == eventNames().textInputEvent && evt->isTextEvent()) {
        TextEvent* textEvent = static_cast<TextEvent*>(evt);
        if (textEvent->data() == "\n")
            clickDefaultFormButton = true;
        else if (renderer() && !isConformedToInputMask(textEvent->data()[0], toRenderTextControl(renderer())->text().length() + 1))
            // If the inputed char doesn't conform to the input mask, stop handling 
            return;
    }

    if (evt->type() == eventNames().keydownEvent && evt->isKeyboardEvent() && focused() && document()->frame()
        && document()->frame()->doTextFieldCommandFromEvent(this, static_cast<KeyboardEvent*>(evt))) {
        evt->setDefaultHandled();
        return;
    }
    
    // Let the key handling done in EventTargetNode take precedence over the event handling here for editable text fields
    if (!clickDefaultFormButton) {
        WMLElement::defaultEventHandler(evt);
        if (evt->defaultHandled())
            return;
    }

    // Use key press event here since sending simulated mouse events
    // on key down blocks the proper sending of the key press event.
    if (evt->type() == eventNames().keypressEvent && evt->isKeyboardEvent()) {
        // Simulate mouse click on the default form button for enter for these types of elements.
        if (static_cast<KeyboardEvent*>(evt)->charCode() == '\r')
            clickDefaultFormButton = true;
    }

    if (clickDefaultFormButton) {
        // Fire onChange for text fields.
        RenderObject* r = renderer();
        if (r && r->isEdited()) {
            dispatchEventForType(eventNames().changeEvent, true, false);
            
            // Refetch the renderer since arbitrary JS code run during onchange can do anything, including destroying it.
            r = renderer();
            if (r)
                r->setEdited(false);
        }

        evt->setDefaultHandled();
        return;
    }

    if (evt->isBeforeTextInsertedEvent())
        InputElement::handleBeforeTextInsertedEvent(m_data, document(), evt);

    if (renderer() && (evt->isMouseEvent() || evt->isDragEvent() || evt->isWheelEvent() || evt->type() == eventNames().blurEvent || evt->type() == eventNames().focusEvent))
        static_cast<RenderTextControlSingleLine*>(renderer())->forwardEvent(evt);
}

void WMLInputElement::cacheSelection(int start, int end)
{
    m_data.setCachedSelectionStart(start);
    m_data.setCachedSelectionEnd(end);
}

String WMLInputElement::constrainValue(const String& proposedValue) const
{
    return InputElement::constrainValue(m_data, proposedValue, m_data.maxLength());
}

void WMLInputElement::documentDidBecomeActive()
{
    ASSERT(m_isPasswordField);
    reset();
}

bool WMLInputElement::placeholderShouldBeVisible() const
{
    return m_data.placeholderShouldBeVisible();
}

void WMLInputElement::willMoveToNewOwnerDocument()
{
    // Always unregister for cache callbacks when leaving a document, even if we would otherwise like to be registered
    if (m_isPasswordField)
        document()->unregisterForDocumentActivationCallbacks(this);

    WMLElement::willMoveToNewOwnerDocument();
}

void WMLInputElement::didMoveToNewOwnerDocument()
{
    if (m_isPasswordField)
        document()->registerForDocumentActivationCallbacks(this);

    WMLElement::didMoveToNewOwnerDocument();
}

void WMLInputElement::init()
{
    String nameVariable = name();
    String variableValue;
    WMLPageState* pageSate = wmlPageStateForDocument(document()); 
    ASSERT(pageSate);
    if (!nameVariable.isEmpty())
        variableValue = pageSate->getVariable(nameVariable);

    if (variableValue.isEmpty() || !isConformedToInputMask(variableValue)) {
        String val = value();
        if (isConformedToInputMask(val))
            variableValue = val;
        else
            variableValue = "";
 
        pageSate->storeVariable(nameVariable, variableValue);
    }
    setValue(variableValue);
 
    if (!hasAttribute(WMLNames::emptyokAttr)) {
        if (m_formatMask.isEmpty() || 
            // check if the format codes is just "*f"
           (m_formatMask.length() == 2 && m_formatMask[0] == '*' && formatCodes().find(m_formatMask[1]) != -1))
            m_isEmptyOk = true;
    }
}

String WMLInputElement::validateInputMask(const String& inputMask)
{
    bool isValid = true;
    bool hasWildcard = false;
    unsigned escapeCharCount = 0;
    unsigned maskLength = inputMask.length();
    UChar formatCode;
 
    for (unsigned i = 0; i < maskLength; ++i) {
        formatCode = inputMask[i];
        if (formatCodes().find(formatCode) == -1) {
            if (formatCode == '*' || (WTF::isASCIIDigit(formatCode) && formatCode != '0')) {
                // validate codes which ends with '*f' or 'nf'
                formatCode = inputMask[++i];
                if ((i + 1 != maskLength) || formatCodes().find(formatCode) == -1) {
                    isValid = false;
                    break;
                }
                hasWildcard = true;
            } else if (formatCode == '\\') {
                //skip over the next mask character
                ++i;
                ++escapeCharCount;
            } else {
                isValid = false;
                break;
            }
        }
    }

    if (!isValid)
        return String();
 
    // calculate the number of characters allowed to be entered by input mask
    m_numOfCharsAllowedByMask = maskLength;

    if (escapeCharCount)
        m_numOfCharsAllowedByMask -= escapeCharCount;

    if (hasWildcard) {
        formatCode = inputMask[maskLength - 2];
        if (formatCode == '*')
            m_numOfCharsAllowedByMask = m_data.maxLength();
        else {
            unsigned leftLen = String(&formatCode).toInt();
            m_numOfCharsAllowedByMask = leftLen + m_numOfCharsAllowedByMask - 2;
        }
    }

    return inputMask;
}

bool WMLInputElement::isConformedToInputMask(const String& inputChars)
{
    for (unsigned i = 0; i < inputChars.length(); ++i)
        if (!isConformedToInputMask(inputChars[i], i + 1, false))
            return false;

    return true;
}
 
bool WMLInputElement::isConformedToInputMask(UChar inChar, unsigned inputCharCount, bool isUserInput)
{
    if (m_formatMask.isEmpty())
        return true;
 
    if (inputCharCount > m_numOfCharsAllowedByMask)
        return false;

    unsigned maskIndex = 0;
    if (isUserInput) {
        unsigned cursorPosition = 0;
        if (renderer())
            cursorPosition = toRenderTextControl(renderer())->selectionStart(); 
        else
            cursorPosition = m_data.cachedSelectionStart();

        maskIndex = cursorPositionToMaskIndex(cursorPosition);
    } else
        maskIndex = cursorPositionToMaskIndex(inputCharCount - 1);

    bool ok = true;
    UChar mask = m_formatMask[maskIndex];
    // match the inputed character with input mask
    switch (mask) {
    case 'A':
        ok = !WTF::isASCIIDigit(inChar) && !WTF::isASCIILower(inChar) && WTF::isASCIIPrintable(inChar);
        break;
    case 'a':
        ok = !WTF::isASCIIDigit(inChar) && !WTF::isASCIIUpper(inChar) && WTF::isASCIIPrintable(inChar);
        break;
    case 'N':
        ok = WTF::isASCIIDigit(inChar);
        break;
    case 'n':
        ok = !WTF::isASCIIAlpha(inChar) && WTF::isASCIIPrintable(inChar);
        break;
    case 'X':
        ok = !WTF::isASCIILower(inChar) && WTF::isASCIIPrintable(inChar);
        break;
    case 'x':
        ok = !WTF::isASCIIUpper(inChar) && WTF::isASCIIPrintable(inChar);
        break;
    case 'M':
        ok = WTF::isASCIIPrintable(inChar);
        break;
    case 'm':
        ok = WTF::isASCIIPrintable(inChar);
        break;
    default:
        ok = (mask == inChar);
        break;
    }

    return ok;
}

unsigned WMLInputElement::cursorPositionToMaskIndex(unsigned cursorPosition)
{
    UChar mask;
    int index = -1;
    do {
        mask = m_formatMask[++index];
        if (mask == '\\')
            ++index;
        else if (mask == '*' || (WTF::isASCIIDigit(mask) && mask != '0')) {
            index = m_formatMask.length() - 1;
            break;
        }
    } while (cursorPosition--);
 
    return index;
}

}

#endif