third_party/WebKit/Source/core/html/shadow/DateTimeFieldElement.h

   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
  33 namespace blink {
  34
  35 class DateComponents;
  36 class DateTimeFieldsState;
  37 class Font;
  38
  39 // DateTimeFieldElement is base class of date time field element.
  40 class DateTimeFieldElement : public HTMLSpanElement {
  41     WTF_MAKE_NONCOPYABLE(DateTimeFieldElement);
  42
  43 public:
  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 : public WillBeGarbageCollectedMixin {
  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         virtual void fieldDidChangeValueByKeyboard() = 0;
  63     };
  64
  65     void defaultEventHandler(Event*) override;
  66     virtual bool hasValue() const = 0;
  67     bool isDisabled() const;
  68     virtual float maximumWidth(const Font&);
  69     virtual void populateDateTimeFieldsState(DateTimeFieldsState&) = 0;
  70     void removeEventHandler() { m_fieldOwner = nullptr; }
  71     void setDisabled();
  72     virtual void setEmptyValue(EventBehavior = DispatchNoEvent) = 0;
  73     virtual void setValueAsDate(const DateComponents&) = 0;
  74     virtual void setValueAsDateTimeFieldsState(const DateTimeFieldsState&) = 0;
  75     virtual void setValueAsInteger(int, EventBehavior = DispatchNoEvent) = 0;
  76     virtual void stepDown() = 0;
  77     virtual void stepUp() = 0;
  78     virtual String value() const = 0;
  79     virtual String visibleValue() const = 0;
  80     DECLARE_VIRTUAL_TRACE();
  81
  82 protected:
  83     DateTimeFieldElement(Document&, FieldOwner&);
  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
  93     // Node functions.
  94     void setFocus(bool) override;
  95
  96 private:
  97     void defaultKeyboardEventHandler(KeyboardEvent*);
  98     bool isDateTimeFieldElement() const final;
  99     bool isFieldOwnerDisabled() const;
 100     bool isFieldOwnerReadOnly() const;
 101     bool supportsFocus() const final;
 102
 103     RawPtrWillBeMember<FieldOwner> m_fieldOwner;
 104 };
 105
 106 } // namespace blink
 107
 108 #endif
 109 #endif