Home | History | Annotate | Download | only in html 
      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
      3  * Copyright (C) 2011 Apple Inc. All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are
      7  * met:
      8  *
      9  *     * Redistributions of source code must retain the above copyright
     10  * notice, this list of conditions and the following disclaimer.
     11  *     * Redistributions in binary form must reproduce the above
     12  * copyright notice, this list of conditions and the following disclaimer
     13  * in the documentation and/or other materials provided with the
     14  * distribution.
     15  *     * Neither the name of Google Inc. nor the names of its
     16  * contributors may be used to endorse or promote products derived from
     17  * this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     22  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     23  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     25  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     29  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include "config.h"
     33 #include "CheckboxInputType.h"
     34 
     35 #include "HTMLInputElement.h"
     36 #include "KeyboardEvent.h"
     37 #include "LocalizedStrings.h"
     38 #include <wtf/PassOwnPtr.h>
     39 
     40 namespace WebCore {
     41 
     42 PassOwnPtr<InputType> CheckboxInputType::create(HTMLInputElement* element)
     43 {
     44     return adoptPtr(new CheckboxInputType(element));
     45 }
     46 
     47 const AtomicString& CheckboxInputType::formControlType() const
     48 {
     49     return InputTypeNames::checkbox();
     50 }
     51 
     52 bool CheckboxInputType::valueMissing(const String&) const
     53 {
     54     return !element()->checked();
     55 }
     56 
     57 String CheckboxInputType::valueMissingText() const
     58 {
     59     return validationMessageValueMissingForCheckboxText();
     60 }
     61 
     62 void CheckboxInputType::handleKeyupEvent(KeyboardEvent* event)
     63 {
     64     const String& key = event->keyIdentifier();
     65     if (key != "U+0020")
     66         return;
     67     dispatchSimulatedClickIfActive(event);
     68 }
     69 
     70 PassOwnPtr<ClickHandlingState> CheckboxInputType::willDispatchClick()
     71 {
     72     // An event handler can use preventDefault or "return false" to reverse the checking we do here.
     73     // The ClickHandlingState object contains what we need to undo what we did here in didDispatchClick.
     74 
     75     OwnPtr<ClickHandlingState> state = adoptPtr(new ClickHandlingState);
     76 
     77     state->checked = element()->checked();
     78     state->indeterminate = element()->indeterminate();
     79 
     80     if (state->indeterminate)
     81         element()->setIndeterminate(false);
     82     else
     83         element()->setChecked(!state->checked, true);
     84 
     85     return state.release();
     86 }
     87 
     88 void CheckboxInputType::didDispatchClick(Event* event, const ClickHandlingState& state)
     89 {
     90     if (event->defaultPrevented() || event->defaultHandled()) {
     91         element()->setIndeterminate(state.indeterminate);
     92         element()->setChecked(state.checked);
     93     }
     94 
     95     // The work we did in willDispatchClick was default handling.
     96     event->setDefaultHandled();
     97 }
     98 
     99 bool CheckboxInputType::isCheckbox() const
    100 {
    101     return true;
    102 }
    103 
    104 } // namespace WebCore
    105