diff -r 000000000000 -r 4f2f89ce4247 WebCore/html/ValidityState.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/html/ValidityState.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,181 @@
+/*
+ * This file is part of the WebKit project.
+ *
+ * Copyright (C) 2009 Michelangelo De Simone <micdesim@gmail.com>
+ * Copyright (C) 2010 Apple Inc. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+#include "ValidityState.h"
+
+#include "HTMLInputElement.h"
+#include "HTMLNames.h"
+#include "LegacyHTMLTreeBuilder.h"
+#include "KURL.h"
+#include "LocalizedStrings.h"
+#include "RegularExpression.h"
+#include <wtf/StdLibExtras.h>
+
+namespace WebCore {
+
+using namespace HTMLNames;
+
+static const char emailPattern[] =
+    "[a-z0-9!#$%&'*+/=?^_`{|}~.-]+" // local part
+    "@"
+    "[a-z0-9-]+(\\.[a-z0-9-]+)+"; // domain part
+
+String ValidityState::validationMessage() const
+{
+    if (!m_control->willValidate())
+        return String();
+
+    if (customError())
+        return m_customErrorMessage;
+    if (valueMissing())
+        return validationMessageValueMissingText();
+    if (typeMismatch())
+        return validationMessageTypeMismatchText();
+    if (patternMismatch())
+        return validationMessagePatternMismatchText();
+    if (tooLong())
+        return validationMessageTooLongText();
+    if (rangeUnderflow())
+        return validationMessageRangeUnderflowText();
+    if (rangeOverflow())
+        return validationMessageRangeOverflowText();
+    if (stepMismatch())
+        return validationMessageStepMismatchText();
+
+    return String();
+}
+
+bool ValidityState::typeMismatch() const
+{
+    if (!m_control->hasTagName(inputTag))
+        return false;
+
+    HTMLInputElement* input = static_cast<HTMLInputElement*>(m_control);
+    String value = input->value();
+
+    if (value.isEmpty())
+        return false;
+
+    switch (input->inputType()) {
+    case HTMLInputElement::COLOR:
+        return !isValidColorString(value);
+    case HTMLInputElement::NUMBER:
+        return !parseToDoubleForNumberType(value, 0);
+    case HTMLInputElement::URL:
+        return !KURL(KURL(), value).isValid();
+    case HTMLInputElement::EMAIL: {
+        if (!input->multiple())
+            return !isValidEmailAddress(value);
+        Vector<String> addresses;
+        value.split(',', addresses);
+        for (unsigned i = 0; i < addresses.size(); ++i) {
+            if (!isValidEmailAddress(addresses[i]))
+                return true;
+        }
+        return false;
+    }
+    case HTMLInputElement::DATE:
+    case HTMLInputElement::DATETIME:
+    case HTMLInputElement::DATETIMELOCAL:
+    case HTMLInputElement::MONTH:
+    case HTMLInputElement::TIME:
+    case HTMLInputElement::WEEK:
+        return !HTMLInputElement::parseToDateComponents(input->inputType(), value, 0);
+    case HTMLInputElement::BUTTON:
+    case HTMLInputElement::CHECKBOX:
+    case HTMLInputElement::FILE:
+    case HTMLInputElement::HIDDEN:
+    case HTMLInputElement::IMAGE:
+    case HTMLInputElement::ISINDEX:
+    case HTMLInputElement::PASSWORD:
+    case HTMLInputElement::RADIO:
+    case HTMLInputElement::RANGE:
+    case HTMLInputElement::RESET:
+    case HTMLInputElement::SEARCH:
+    case HTMLInputElement::SUBMIT:
+    case HTMLInputElement::TELEPHONE: // FIXME: Is there validation for <input type=telephone>?
+    case HTMLInputElement::TEXT:
+        return false;
+    }
+
+    ASSERT_NOT_REACHED();
+    return false;
+}
+
+bool ValidityState::rangeUnderflow() const
+{
+    if (!m_control->hasTagName(inputTag))
+        return false;
+    return static_cast<HTMLInputElement*>(m_control)->rangeUnderflow();
+}
+
+bool ValidityState::rangeOverflow() const
+{
+    if (!m_control->hasTagName(inputTag))
+        return false;
+    return static_cast<HTMLInputElement*>(m_control)->rangeOverflow();
+}
+
+bool ValidityState::stepMismatch() const
+{
+    if (!m_control->hasTagName(inputTag))
+        return false;
+    return static_cast<HTMLInputElement*>(m_control)->stepMismatch();
+}
+
+bool ValidityState::valid() const
+{
+    bool someError = typeMismatch() || stepMismatch() || rangeUnderflow() || rangeOverflow()
+        || tooLong() || patternMismatch() || valueMissing() || customError();
+    return !someError;
+}
+
+bool ValidityState::isValidColorString(const String& value)
+{
+    if (value.isEmpty())
+        return false;
+    if (value[0] == '#') {
+        // We don't accept #rgb and #aarrggbb formats.
+        if (value.length() != 7)
+            return false;
+    }
+    Color color(value);  // This accepts named colors such as "white".
+    return color.isValid() && !color.hasAlpha();
+}
+
+bool ValidityState::isValidEmailAddress(const String& address)
+{
+    int addressLength = address.length();
+    if (!addressLength)
+        return false;
+
+    DEFINE_STATIC_LOCAL(const RegularExpression, regExp, (emailPattern, TextCaseInsensitive));
+
+    int matchLength;
+    int matchOffset = regExp.match(address, 0, &matchLength);
+
+    return matchOffset == 0 && matchLength == addressLength;
+}
+
+} // namespace