Upstream version 7.36.149.0
[platform/framework/web/crosswalk.git] / src / third_party / WebKit / Source / core / html / forms / SearchInputType.cpp
1 /*
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16  * this software without specific prior written permission.
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30
31 #include "config.h"
32 #include "core/html/forms/SearchInputType.h"
33
34 #include "HTMLNames.h"
35 #include "InputTypeNames.h"
36 #include "bindings/v8/ExceptionStatePlaceholder.h"
37 #include "core/events/KeyboardEvent.h"
38 #include "core/dom/shadow/ShadowRoot.h"
39 #include "core/html/HTMLInputElement.h"
40 #include "core/html/shadow/ShadowElementNames.h"
41 #include "core/html/shadow/TextControlInnerElements.h"
42 #include "core/rendering/RenderSearchField.h"
43 #include "wtf/PassOwnPtr.h"
44
45 namespace WebCore {
46
47 using namespace HTMLNames;
48
49 inline SearchInputType::SearchInputType(HTMLInputElement& element)
50     : BaseTextInputType(element)
51     , m_searchEventTimer(this, &SearchInputType::searchEventTimerFired)
52 {
53 }
54
55 PassRefPtrWillBeRawPtr<InputType> SearchInputType::create(HTMLInputElement& element)
56 {
57     return adoptRefWillBeNoop(new SearchInputType(element));
58 }
59
60 void SearchInputType::countUsage()
61 {
62     countUsageIfVisible(UseCounter::InputTypeSearch);
63 }
64
65 RenderObject* SearchInputType::createRenderer(RenderStyle*) const
66 {
67     return new RenderSearchField(&element());
68 }
69
70 const AtomicString& SearchInputType::formControlType() const
71 {
72     return InputTypeNames::search;
73 }
74
75 bool SearchInputType::shouldRespectSpeechAttribute()
76 {
77     return true;
78 }
79
80 bool SearchInputType::isSearchField() const
81 {
82     return true;
83 }
84
85 bool SearchInputType::needsContainer() const
86 {
87     return true;
88 }
89
90 void SearchInputType::createShadowSubtree()
91 {
92     TextFieldInputType::createShadowSubtree();
93     Element* container = containerElement();
94     Element* viewPort = element().userAgentShadowRoot()->getElementById(ShadowElementNames::editingViewPort());
95     ASSERT(container);
96     ASSERT(viewPort);
97
98     container->insertBefore(SearchFieldDecorationElement::create(element().document()), viewPort);
99     container->insertBefore(SearchFieldCancelButtonElement::create(element().document()), viewPort->nextSibling());
100 }
101
102 void SearchInputType::handleKeydownEvent(KeyboardEvent* event)
103 {
104     if (element().isDisabledOrReadOnly()) {
105         TextFieldInputType::handleKeydownEvent(event);
106         return;
107     }
108
109     const String& key = event->keyIdentifier();
110     if (key == "U+001B") {
111         RefPtr<HTMLInputElement> input(element());
112         input->setValueForUser("");
113         input->onSearch();
114         event->setDefaultHandled();
115         return;
116     }
117     TextFieldInputType::handleKeydownEvent(event);
118 }
119
120 void SearchInputType::startSearchEventTimer()
121 {
122     ASSERT(element().renderer());
123     unsigned length = element().innerTextValue().length();
124
125     if (!length) {
126         stopSearchEventTimer();
127         element().onSearch();
128         return;
129     }
130
131     // After typing the first key, we wait 0.5 seconds.
132     // After the second key, 0.4 seconds, then 0.3, then 0.2 from then on.
133     m_searchEventTimer.startOneShot(max(0.2, 0.6 - 0.1 * length), FROM_HERE);
134 }
135
136 void SearchInputType::stopSearchEventTimer()
137 {
138     m_searchEventTimer.stop();
139 }
140
141 void SearchInputType::searchEventTimerFired(Timer<SearchInputType>*)
142 {
143     element().onSearch();
144 }
145
146 bool SearchInputType::searchEventsShouldBeDispatched() const
147 {
148     return element().hasAttribute(incrementalAttr);
149 }
150
151 void SearchInputType::didSetValueByUserEdit(ValueChangeState state)
152 {
153     updateCancelButtonVisibility();
154
155     // If the incremental attribute is set, then dispatch the search event
156     if (searchEventsShouldBeDispatched())
157         startSearchEventTimer();
158
159     TextFieldInputType::didSetValueByUserEdit(state);
160 }
161
162 void SearchInputType::updateView()
163 {
164     BaseTextInputType::updateView();
165     updateCancelButtonVisibility();
166 }
167
168 void SearchInputType::updateCancelButtonVisibility()
169 {
170     Element* button = element().userAgentShadowRoot()->getElementById(ShadowElementNames::clearButton());
171     if (!button)
172         return;
173     if (element().value().isEmpty()) {
174         button->setInlineStyleProperty(CSSPropertyOpacity, 0.0, CSSPrimitiveValue::CSS_NUMBER);
175         button->setInlineStyleProperty(CSSPropertyPointerEvents, CSSValueNone);
176     } else {
177         button->removeInlineStyleProperty(CSSPropertyOpacity);
178         button->removeInlineStyleProperty(CSSPropertyPointerEvents);
179     }
180 }
181
182 bool SearchInputType::supportsInputModeAttribute() const
183 {
184     return true;
185 }
186
187 } // namespace WebCore