1/*
2 * Copyright (C) 2012 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
6 * are met:
7 * 1.  Redistributions of source code must retain the above copyright
8 *     notice, this list of conditions and the following disclaimer.
9 * 2.  Redistributions in binary form must reproduce the above copyright
10 *     notice, this list of conditions and the following disclaimer in the
11 *     documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
19 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
20 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26#ifndef DateTimeFieldElement_h
27#define DateTimeFieldElement_h
28
29#if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
30#include "core/html/HTMLDivElement.h"
31#include "core/html/HTMLSpanElement.h"
32
33namespace WebCore {
34
35class DateComponents;
36class DateTimeFieldsState;
37class Font;
38
39// DateTimeFieldElement is base class of date time field element.
40class DateTimeFieldElement : public HTMLSpanElement {
41    WTF_MAKE_NONCOPYABLE(DateTimeFieldElement);
42
43public:
44    enum EventBehavior {
45        DispatchNoEvent,
46        DispatchEvent,
47    };
48
49    // FieldOwner implementer must call removeEventHandler when
50    // it doesn't handle event, e.g. at destruction.
51    class FieldOwner {
52    public:
53        virtual ~FieldOwner();
54        virtual void didBlurFromField() = 0;
55        virtual void didFocusOnField() = 0;
56        virtual void fieldValueChanged() = 0;
57        virtual bool focusOnNextField(const DateTimeFieldElement&) = 0;
58        virtual bool focusOnPreviousField(const DateTimeFieldElement&) = 0;
59        virtual bool isFieldOwnerDisabled() const = 0;
60        virtual bool isFieldOwnerReadOnly() const = 0;
61        virtual AtomicString localeIdentifier() const = 0;
62    };
63
64    virtual void defaultEventHandler(Event*) OVERRIDE;
65    virtual bool hasValue() const = 0;
66    bool isDisabled() const;
67    virtual float maximumWidth(const Font&);
68    virtual void populateDateTimeFieldsState(DateTimeFieldsState&) = 0;
69    void removeEventHandler() { m_fieldOwner = 0; }
70    void setDisabled();
71    virtual void setEmptyValue(EventBehavior = DispatchNoEvent) = 0;
72    virtual void setValueAsDate(const DateComponents&) = 0;
73    virtual void setValueAsDateTimeFieldsState(const DateTimeFieldsState&) = 0;
74    virtual void setValueAsInteger(int, EventBehavior = DispatchNoEvent) = 0;
75    virtual void stepDown() = 0;
76    virtual void stepUp() = 0;
77    virtual String value() const = 0;
78    virtual String visibleValue() const = 0;
79
80protected:
81    DateTimeFieldElement(Document&, FieldOwner&);
82    virtual void didBlur();
83    virtual void didFocus();
84    void focusOnNextField();
85    virtual void handleKeyboardEvent(KeyboardEvent*) = 0;
86    void initialize(const AtomicString& pseudo, const String& axHelpText, int axMinimum, int axMaximum);
87    Locale& localeForOwner() const;
88    AtomicString localeIdentifier() const;
89    void updateVisibleValue(EventBehavior);
90    virtual int valueAsInteger() const = 0;
91    virtual int valueForARIAValueNow() const;
92
93private:
94    void defaultKeyboardEventHandler(KeyboardEvent*);
95    virtual bool isDateTimeFieldElement() const OVERRIDE;
96    bool isFieldOwnerDisabled() const;
97    bool isFieldOwnerReadOnly() const;
98    virtual bool supportsFocus() const OVERRIDE FINAL;
99
100    FieldOwner* m_fieldOwner;
101};
102
103} // namespace WebCore
104
105#endif
106#endif
107