1 /*
2 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 *
19 */
20
21 #include "config.h"
22 #if ENABLE(PROGRESS_TAG)
23 #include "HTMLProgressElement.h"
24
25 #include "Attribute.h"
26 #include "EventNames.h"
27 #include "ExceptionCode.h"
28 #include "FormDataList.h"
29 #include "HTMLDivElement.h"
30 #include "HTMLFormElement.h"
31 #include "HTMLNames.h"
32 #include "HTMLParserIdioms.h"
33 #include "ProgressShadowElement.h"
34 #include "RenderProgress.h"
35 #include "ShadowRoot.h"
36 #include <wtf/StdLibExtras.h>
37
38 namespace WebCore {
39
40 using namespace HTMLNames;
41
42 const double HTMLProgressElement::IndeterminatePosition = -1;
43 const double HTMLProgressElement::InvalidPosition = -2;
44
HTMLProgressElement(const QualifiedName & tagName,Document * document,HTMLFormElement * form)45 HTMLProgressElement::HTMLProgressElement(const QualifiedName& tagName, Document* document, HTMLFormElement* form)
46 : HTMLFormControlElement(tagName, document, form)
47 {
48 ASSERT(hasTagName(progressTag));
49 }
50
~HTMLProgressElement()51 HTMLProgressElement::~HTMLProgressElement()
52 {
53 }
54
create(const QualifiedName & tagName,Document * document,HTMLFormElement * form)55 PassRefPtr<HTMLProgressElement> HTMLProgressElement::create(const QualifiedName& tagName, Document* document, HTMLFormElement* form)
56 {
57 RefPtr<HTMLProgressElement> progress = adoptRef(new HTMLProgressElement(tagName, document, form));
58 progress->createShadowSubtree();
59 return progress;
60 }
61
createRenderer(RenderArena * arena,RenderStyle *)62 RenderObject* HTMLProgressElement::createRenderer(RenderArena* arena, RenderStyle*)
63 {
64 return new (arena) RenderProgress(this);
65 }
66
formControlType() const67 const AtomicString& HTMLProgressElement::formControlType() const
68 {
69 DEFINE_STATIC_LOCAL(const AtomicString, progress, ("progress"));
70 return progress;
71 }
72
parseMappedAttribute(Attribute * attribute)73 void HTMLProgressElement::parseMappedAttribute(Attribute* attribute)
74 {
75 if (attribute->name() == valueAttr)
76 didElementStateChange();
77 else if (attribute->name() == maxAttr)
78 didElementStateChange();
79 else
80 HTMLFormControlElement::parseMappedAttribute(attribute);
81 }
82
attach()83 void HTMLProgressElement::attach()
84 {
85 HTMLFormControlElement::attach();
86 didElementStateChange();
87 }
88
value() const89 double HTMLProgressElement::value() const
90 {
91 const AtomicString& valueString = getAttribute(valueAttr);
92 double value;
93 bool ok = parseToDoubleForNumberType(valueString, &value);
94 if (!ok || value < 0)
95 return valueString.isNull() ? 1 : 0;
96 return (value > max()) ? max() : value;
97 }
98
setValue(double value,ExceptionCode & ec)99 void HTMLProgressElement::setValue(double value, ExceptionCode& ec)
100 {
101 if (!isfinite(value)) {
102 ec = NOT_SUPPORTED_ERR;
103 return;
104 }
105 setAttribute(valueAttr, String::number(value >= 0 ? value : 0));
106 }
107
max() const108 double HTMLProgressElement::max() const
109 {
110 double max;
111 bool ok = parseToDoubleForNumberType(getAttribute(maxAttr), &max);
112 if (!ok || max <= 0)
113 return 1;
114 return max;
115 }
116
setMax(double max,ExceptionCode & ec)117 void HTMLProgressElement::setMax(double max, ExceptionCode& ec)
118 {
119 if (!isfinite(max)) {
120 ec = NOT_SUPPORTED_ERR;
121 return;
122 }
123 setAttribute(maxAttr, String::number(max > 0 ? max : 1));
124 }
125
position() const126 double HTMLProgressElement::position() const
127 {
128 if (!hasAttribute(valueAttr))
129 return HTMLProgressElement::IndeterminatePosition;
130 return value() / max();
131 }
132
didElementStateChange()133 void HTMLProgressElement::didElementStateChange()
134 {
135 m_value->setWidthPercentage(position()*100);
136 if (renderer())
137 renderer()->updateFromElement();
138 }
139
createShadowSubtree()140 void HTMLProgressElement::createShadowSubtree()
141 {
142 RefPtr<ProgressBarElement> bar = ProgressBarElement::create(document());
143 m_value = ProgressValueElement::create(document());
144 ExceptionCode ec = 0;
145 bar->appendChild(m_value, ec);
146 ensureShadowRoot()->appendChild(bar, ec);
147 }
148
149 } // namespace
150 #endif
151