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
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 "BaseDateAndTimeInputType.h"
33
34 #include "DateComponents.h"
35 #include "HTMLInputElement.h"
36 #include "HTMLNames.h"
37 #include "KeyboardEvent.h"
38 #include <limits>
39 #include <wtf/CurrentTime.h>
40 #include <wtf/DateMath.h>
41 #include <wtf/MathExtras.h>
42 #include <wtf/PassOwnPtr.h>
43 #include <wtf/text/WTFString.h>
44
45 namespace WebCore {
46
47 using namespace HTMLNames;
48 using namespace std;
49
50 static const double msecPerMinute = 60 * 1000;
51 static const double msecPerSecond = 1000;
52
valueAsDate() const53 double BaseDateAndTimeInputType::valueAsDate() const
54 {
55 return parseToDouble(element()->value(), DateComponents::invalidMilliseconds());
56 }
57
setValueAsDate(double value,ExceptionCode &) const58 void BaseDateAndTimeInputType::setValueAsDate(double value, ExceptionCode&) const
59 {
60 element()->setValue(serialize(value));
61 }
62
valueAsNumber() const63 double BaseDateAndTimeInputType::valueAsNumber() const
64 {
65 return parseToDouble(element()->value(), numeric_limits<double>::quiet_NaN());
66 }
67
setValueAsNumber(double newValue,ExceptionCode &) const68 void BaseDateAndTimeInputType::setValueAsNumber(double newValue, ExceptionCode&) const
69 {
70 element()->setValue(serialize(newValue));
71 }
72
typeMismatchFor(const String & value) const73 bool BaseDateAndTimeInputType::typeMismatchFor(const String& value) const
74 {
75 return !value.isEmpty() && !parseToDateComponents(value, 0);
76 }
77
typeMismatch() const78 bool BaseDateAndTimeInputType::typeMismatch() const
79 {
80 return typeMismatchFor(element()->value());
81 }
82
rangeUnderflow(const String & value) const83 bool BaseDateAndTimeInputType::rangeUnderflow(const String& value) const
84 {
85 const double nan = numeric_limits<double>::quiet_NaN();
86 double doubleValue = parseToDouble(value, nan);
87 return isfinite(doubleValue) && doubleValue < minimum();
88 }
89
rangeOverflow(const String & value) const90 bool BaseDateAndTimeInputType::rangeOverflow(const String& value) const
91 {
92 const double nan = numeric_limits<double>::quiet_NaN();
93 double doubleValue = parseToDouble(value, nan);
94 return isfinite(doubleValue) && doubleValue > maximum();
95 }
96
supportsRangeLimitation() const97 bool BaseDateAndTimeInputType::supportsRangeLimitation() const
98 {
99 return true;
100 }
101
defaultValueForStepUp() const102 double BaseDateAndTimeInputType::defaultValueForStepUp() const
103 {
104 double ms = currentTimeMS();
105 double utcOffset = calculateUTCOffset();
106 double dstOffset = calculateDSTOffset(ms, utcOffset);
107 int offset = static_cast<int>((utcOffset + dstOffset) / msPerMinute);
108 return ms + (offset * msPerMinute);
109 }
110
stepMismatch(const String & value,double step) const111 bool BaseDateAndTimeInputType::stepMismatch(const String& value, double step) const
112 {
113 const double nan = numeric_limits<double>::quiet_NaN();
114 double doubleValue = parseToDouble(value, nan);
115 doubleValue = fabs(doubleValue - stepBase());
116 if (!isfinite(doubleValue))
117 return false;
118 ASSERT(round(doubleValue) == doubleValue);
119 ASSERT(round(step) == step);
120 return fmod(doubleValue, step);
121 }
122
stepBase() const123 double BaseDateAndTimeInputType::stepBase() const
124 {
125 return parseToDouble(element()->fastGetAttribute(minAttr), defaultStepBase());
126 }
127
handleKeydownEvent(KeyboardEvent * event)128 void BaseDateAndTimeInputType::handleKeydownEvent(KeyboardEvent* event)
129 {
130 handleKeydownEventForSpinButton(event);
131 if (!event->defaultHandled())
132 TextFieldInputType::handleKeydownEvent(event);
133 }
134
handleWheelEvent(WheelEvent * event)135 void BaseDateAndTimeInputType::handleWheelEvent(WheelEvent* event)
136 {
137 handleWheelEventForSpinButton(event);
138 }
139
parseToDouble(const String & src,double defaultValue) const140 double BaseDateAndTimeInputType::parseToDouble(const String& src, double defaultValue) const
141 {
142 DateComponents date;
143 if (!parseToDateComponents(src, &date))
144 return defaultValue;
145 double msec = date.millisecondsSinceEpoch();
146 ASSERT(isfinite(msec));
147 return msec;
148 }
149
parseToDateComponents(const String & source,DateComponents * out) const150 bool BaseDateAndTimeInputType::parseToDateComponents(const String& source, DateComponents* out) const
151 {
152 if (source.isEmpty())
153 return false;
154 DateComponents ignoredResult;
155 if (!out)
156 out = &ignoredResult;
157 return parseToDateComponentsInternal(source.characters(), source.length(), out);
158 }
159
serialize(double value) const160 String BaseDateAndTimeInputType::serialize(double value) const
161 {
162 if (!isfinite(value))
163 return String();
164 DateComponents date;
165 if (!setMillisecondToDateComponents(value, &date))
166 return String();
167 double step;
168 if (!element()->getAllowedValueStep(&step))
169 return date.toString();
170 if (!fmod(step, msecPerMinute))
171 return date.toString(DateComponents::None);
172 if (!fmod(step, msecPerSecond))
173 return date.toString(DateComponents::Second);
174 return date.toString(DateComponents::Millisecond);
175 }
176
hasSpinButton()177 bool BaseDateAndTimeInputType::hasSpinButton()
178 {
179 return true;
180 }
181
182 } // namespace WebCore
183