1/*
2 * This file is part of the WebKit project.
3 *
4 * Copyright (C) 2009 Michelangelo De Simone <micdesim@gmail.com>
5 * Copyright (C) 2010 Google Inc. All rights reserved.
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB.  If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21 *
22 */
23
24#include "config.h"
25#include "core/html/forms/BaseTextInputType.h"
26
27#include "bindings/core/v8/ScriptRegexp.h"
28#include "core/HTMLNames.h"
29#include "core/html/HTMLInputElement.h"
30
31namespace blink {
32
33using namespace HTMLNames;
34
35int BaseTextInputType::maxLength() const
36{
37    return element().maxLength();
38}
39
40bool BaseTextInputType::tooLong(const String& value, HTMLTextFormControlElement::NeedsToCheckDirtyFlag check) const
41{
42    int max = element().maxLength();
43    if (max < 0)
44        return false;
45    if (check == HTMLTextFormControlElement::CheckDirtyFlag) {
46        // Return false for the default value or a value set by a script even if
47        // it is longer than maxLength.
48        if (!element().hasDirtyValue() || !element().lastChangeWasUserEdit())
49            return false;
50    }
51    return value.length() > static_cast<unsigned>(max);
52}
53
54bool BaseTextInputType::patternMismatch(const String& value) const
55{
56    const AtomicString& rawPattern = element().fastGetAttribute(patternAttr);
57    // Empty values can't be mismatched
58    if (rawPattern.isNull() || value.isEmpty() || !ScriptRegexp(rawPattern, TextCaseSensitive).isValid())
59        return false;
60    String pattern = "^(?:" + rawPattern + ")$";
61    int matchLength = 0;
62    int valueLength = value.length();
63    int matchOffset = ScriptRegexp(pattern, TextCaseSensitive).match(value, 0, &matchLength);
64    return matchOffset || matchLength != valueLength;
65}
66
67bool BaseTextInputType::supportsPlaceholder() const
68{
69    return true;
70}
71
72bool BaseTextInputType::supportsSelectionAPI() const
73{
74    return true;
75}
76
77} // namespace blink
78