1 /*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "MonthInputType.h"
33
34 #include "DateComponents.h"
35 #include "HTMLInputElement.h"
36 #include "HTMLNames.h"
37 #include <wtf/CurrentTime.h>
38 #include <wtf/DateMath.h>
39 #include <wtf/MathExtras.h>
40 #include <wtf/PassOwnPtr.h>
41
42 namespace WebCore {
43
44 using namespace HTMLNames;
45
46 static const double monthDefaultStep = 1.0;
47 static const double monthStepScaleFactor = 1.0;
48
create(HTMLInputElement * element)49 PassOwnPtr<InputType> MonthInputType::create(HTMLInputElement* element)
50 {
51 return adoptPtr(new MonthInputType(element));
52 }
53
formControlType() const54 const AtomicString& MonthInputType::formControlType() const
55 {
56 return InputTypeNames::month();
57 }
58
valueAsDate() const59 double MonthInputType::valueAsDate() const
60 {
61 DateComponents date;
62 if (!parseToDateComponents(element()->value(), &date))
63 return DateComponents::invalidMilliseconds();
64 double msec = date.millisecondsSinceEpoch();
65 ASSERT(isfinite(msec));
66 return msec;
67 }
68
setValueAsDate(double value,ExceptionCode &) const69 void MonthInputType::setValueAsDate(double value, ExceptionCode&) const
70 {
71 DateComponents date;
72 if (!date.setMillisecondsSinceEpochForMonth(value)) {
73 element()->setValue(String());
74 return;
75 }
76 element()->setValue(date.toString());
77 }
78
defaultValueForStepUp() const79 double MonthInputType::defaultValueForStepUp() const
80 {
81 double current = currentTimeMS();
82 double utcOffset = calculateUTCOffset();
83 double dstOffset = calculateDSTOffset(current, utcOffset);
84 int offset = static_cast<int>((utcOffset + dstOffset) / msPerMinute);
85 current += offset * msPerMinute;
86
87 DateComponents date;
88 date.setMillisecondsSinceEpochForMonth(current);
89 double months = date.monthsSinceEpoch();
90 ASSERT(isfinite(months));
91 return months;
92 }
93
minimum() const94 double MonthInputType::minimum() const
95 {
96 return parseToDouble(element()->fastGetAttribute(minAttr), DateComponents::minimumMonth());
97 }
98
maximum() const99 double MonthInputType::maximum() const
100 {
101 return parseToDouble(element()->fastGetAttribute(maxAttr), DateComponents::maximumMonth());
102 }
103
defaultStep() const104 double MonthInputType::defaultStep() const
105 {
106 return monthDefaultStep;
107 }
108
stepScaleFactor() const109 double MonthInputType::stepScaleFactor() const
110 {
111 return monthStepScaleFactor;
112 }
113
parsedStepValueShouldBeInteger() const114 bool MonthInputType::parsedStepValueShouldBeInteger() const
115 {
116 return true;
117 }
118
parseToDouble(const String & src,double defaultValue) const119 double MonthInputType::parseToDouble(const String& src, double defaultValue) const
120 {
121 DateComponents date;
122 if (!parseToDateComponents(src, &date))
123 return defaultValue;
124 double months = date.monthsSinceEpoch();
125 ASSERT(isfinite(months));
126 return months;
127 }
128
parseToDateComponentsInternal(const UChar * characters,unsigned length,DateComponents * out) const129 bool MonthInputType::parseToDateComponentsInternal(const UChar* characters, unsigned length, DateComponents* out) const
130 {
131 ASSERT(out);
132 unsigned end;
133 return out->parseMonth(characters, length, 0, end) && end == length;
134 }
135
setMillisecondToDateComponents(double value,DateComponents * date) const136 bool MonthInputType::setMillisecondToDateComponents(double value, DateComponents* date) const
137 {
138 ASSERT(date);
139 return date->setMonthsSinceEpoch(value);
140 }
141
142 } // namespace WebCore
143