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 "InputTypeNames.h"
37#include "KeyboardEvent.h"
38#include "LocalizedStrings.h"
39#include <wtf/PassOwnPtr.h>
40
41namespace WebCore {
42
43PassOwnPtr<InputType> CheckboxInputType::create(HTMLInputElement* element)
44{
45    return adoptPtr(new CheckboxInputType(element));
46}
47
48const AtomicString& CheckboxInputType::formControlType() const
49{
50    return InputTypeNames::checkbox();
51}
52
53bool CheckboxInputType::valueMissing(const String&) const
54{
55    return element()->isRequired() && !element()->checked();
56}
57
58String CheckboxInputType::valueMissingText() const
59{
60    return validationMessageValueMissingForCheckboxText();
61}
62
63void CheckboxInputType::handleKeyupEvent(KeyboardEvent* event)
64{
65    const String& key = event->keyIdentifier();
66    if (key != "U+0020")
67        return;
68    dispatchSimulatedClickIfActive(event);
69}
70
71PassOwnPtr<ClickHandlingState> CheckboxInputType::willDispatchClick()
72{
73    // An event handler can use preventDefault or "return false" to reverse the checking we do here.
74    // The ClickHandlingState object contains what we need to undo what we did here in didDispatchClick.
75
76    OwnPtr<ClickHandlingState> state = adoptPtr(new ClickHandlingState);
77
78    state->checked = element()->checked();
79    state->indeterminate = element()->indeterminate();
80
81    if (state->indeterminate)
82        element()->setIndeterminate(false);
83
84    element()->setChecked(!state->checked, DispatchChangeEvent);
85
86    return state.release();
87}
88
89void CheckboxInputType::didDispatchClick(Event* event, const ClickHandlingState& state)
90{
91    if (event->defaultPrevented() || event->defaultHandled()) {
92        element()->setIndeterminate(state.indeterminate);
93        element()->setChecked(state.checked);
94    }
95
96    // The work we did in willDispatchClick was default handling.
97    event->setDefaultHandled();
98}
99
100bool CheckboxInputType::isCheckbox() const
101{
102    return true;
103}
104
105bool CheckboxInputType::supportsIndeterminateAppearance() const
106{
107    return true;
108}
109
110} // namespace WebCore
111