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 "core/html/forms/ColorInputType.h"
33
34 #include "bindings/v8/ExceptionStatePlaceholder.h"
35 #include "bindings/v8/ScriptController.h"
36 #include "core/CSSPropertyNames.h"
37 #include "core/InputTypeNames.h"
38 #include "core/events/MouseEvent.h"
39 #include "core/dom/shadow/ShadowRoot.h"
40 #include "core/html/HTMLDataListElement.h"
41 #include "core/html/HTMLDivElement.h"
42 #include "core/html/HTMLInputElement.h"
43 #include "core/html/HTMLOptionElement.h"
44 #include "core/page/Chrome.h"
45 #include "core/rendering/RenderView.h"
46 #include "platform/ColorChooser.h"
47 #include "platform/RuntimeEnabledFeatures.h"
48 #include "platform/UserGestureIndicator.h"
49 #include "platform/graphics/Color.h"
50 #include "wtf/PassOwnPtr.h"
51 #include "wtf/text/WTFString.h"
52
53 namespace WebCore {
54
55 using namespace HTMLNames;
56
57 // Upper limit of number of datalist suggestions shown.
58 static const unsigned maxSuggestions = 1000;
59 // Upper limit for the length of the labels for datalist suggestions.
60 static const unsigned maxSuggestionLabelLength = 1000;
61
isValidColorString(const String & value)62 static bool isValidColorString(const String& value)
63 {
64 if (value.isEmpty())
65 return false;
66 if (value[0] != '#')
67 return false;
68
69 // We don't accept #rgb and #aarrggbb formats.
70 if (value.length() != 7)
71 return false;
72 Color color;
73 return color.setFromString(value) && !color.hasAlpha();
74 }
75
create(HTMLInputElement & element)76 PassRefPtrWillBeRawPtr<InputType> ColorInputType::create(HTMLInputElement& element)
77 {
78 return adoptRefWillBeNoop(new ColorInputType(element));
79 }
80
~ColorInputType()81 ColorInputType::~ColorInputType()
82 {
83 endColorChooser();
84 }
85
countUsage()86 void ColorInputType::countUsage()
87 {
88 countUsageIfVisible(UseCounter::InputTypeColor);
89 }
90
isColorControl() const91 bool ColorInputType::isColorControl() const
92 {
93 return true;
94 }
95
formControlType() const96 const AtomicString& ColorInputType::formControlType() const
97 {
98 return InputTypeNames::color;
99 }
100
supportsRequired() const101 bool ColorInputType::supportsRequired() const
102 {
103 return false;
104 }
105
fallbackValue() const106 String ColorInputType::fallbackValue() const
107 {
108 return String("#000000");
109 }
110
sanitizeValue(const String & proposedValue) const111 String ColorInputType::sanitizeValue(const String& proposedValue) const
112 {
113 if (!isValidColorString(proposedValue))
114 return fallbackValue();
115
116 return proposedValue.lower();
117 }
118
valueAsColor() const119 Color ColorInputType::valueAsColor() const
120 {
121 Color color;
122 bool success = color.setFromString(element().value());
123 ASSERT_UNUSED(success, success);
124 return color;
125 }
126
createShadowSubtree()127 void ColorInputType::createShadowSubtree()
128 {
129 ASSERT(element().shadow());
130
131 Document& document = element().document();
132 RefPtrWillBeRawPtr<HTMLDivElement> wrapperElement = HTMLDivElement::create(document);
133 wrapperElement->setShadowPseudoId(AtomicString("-webkit-color-swatch-wrapper", AtomicString::ConstructFromLiteral));
134 RefPtrWillBeRawPtr<HTMLDivElement> colorSwatch = HTMLDivElement::create(document);
135 colorSwatch->setShadowPseudoId(AtomicString("-webkit-color-swatch", AtomicString::ConstructFromLiteral));
136 wrapperElement->appendChild(colorSwatch.release());
137 element().userAgentShadowRoot()->appendChild(wrapperElement.release());
138
139 element().updateView();
140 }
141
setValue(const String & value,bool valueChanged,TextFieldEventBehavior eventBehavior)142 void ColorInputType::setValue(const String& value, bool valueChanged, TextFieldEventBehavior eventBehavior)
143 {
144 InputType::setValue(value, valueChanged, eventBehavior);
145
146 if (!valueChanged)
147 return;
148
149 element().updateView();
150 if (m_chooser)
151 m_chooser->setSelectedColor(valueAsColor());
152 }
153
handleDOMActivateEvent(Event * event)154 void ColorInputType::handleDOMActivateEvent(Event* event)
155 {
156 if (element().isDisabledFormControl() || !element().renderer())
157 return;
158
159 if (!UserGestureIndicator::processingUserGesture())
160 return;
161
162 Chrome* chrome = this->chrome();
163 if (chrome && !m_chooser)
164 m_chooser = chrome->createColorChooser(element().document().frame(), this, valueAsColor());
165
166 event->setDefaultHandled();
167 }
168
closePopupView()169 void ColorInputType::closePopupView()
170 {
171 endColorChooser();
172 }
173
shouldRespectListAttribute()174 bool ColorInputType::shouldRespectListAttribute()
175 {
176 return true;
177 }
178
typeMismatchFor(const String & value) const179 bool ColorInputType::typeMismatchFor(const String& value) const
180 {
181 return !isValidColorString(value);
182 }
183
didChooseColor(const Color & color)184 void ColorInputType::didChooseColor(const Color& color)
185 {
186 if (element().isDisabledFormControl() || color == valueAsColor())
187 return;
188 element().setValueFromRenderer(color.serialized());
189 element().updateView();
190 element().dispatchFormControlChangeEvent();
191 }
192
didEndChooser()193 void ColorInputType::didEndChooser()
194 {
195 m_chooser.clear();
196 }
197
endColorChooser()198 void ColorInputType::endColorChooser()
199 {
200 if (m_chooser)
201 m_chooser->endChooser();
202 }
203
updateView()204 void ColorInputType::updateView()
205 {
206 HTMLElement* colorSwatch = shadowColorSwatch();
207 if (!colorSwatch)
208 return;
209
210 colorSwatch->setInlineStyleProperty(CSSPropertyBackgroundColor, element().value());
211 }
212
shadowColorSwatch() const213 HTMLElement* ColorInputType::shadowColorSwatch() const
214 {
215 ShadowRoot* shadow = element().userAgentShadowRoot();
216 return shadow ? toHTMLElement(shadow->firstChild()->firstChild()) : 0;
217 }
218
elementRectRelativeToRootView() const219 IntRect ColorInputType::elementRectRelativeToRootView() const
220 {
221 return element().document().view()->contentsToRootView(element().pixelSnappedBoundingBox());
222 }
223
currentColor()224 Color ColorInputType::currentColor()
225 {
226 return valueAsColor();
227 }
228
shouldShowSuggestions() const229 bool ColorInputType::shouldShowSuggestions() const
230 {
231 return element().fastHasAttribute(listAttr);
232 }
233
suggestions() const234 Vector<ColorSuggestion> ColorInputType::suggestions() const
235 {
236 Vector<ColorSuggestion> suggestions;
237 HTMLDataListElement* dataList = element().dataList();
238 if (dataList) {
239 RefPtrWillBeRawPtr<HTMLCollection> options = dataList->options();
240 for (unsigned i = 0; HTMLOptionElement* option = toHTMLOptionElement(options->item(i)); i++) {
241 if (!element().isValidValue(option->value()))
242 continue;
243 Color color;
244 if (!color.setFromString(option->value()))
245 continue;
246 ColorSuggestion suggestion(color, option->label().left(maxSuggestionLabelLength));
247 suggestions.append(suggestion);
248 if (suggestions.size() >= maxSuggestions)
249 break;
250 }
251 }
252 return suggestions;
253 }
254
255 } // namespace WebCore
256