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      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 DateTimeSymbolicFieldElement_h
     27 #define DateTimeSymbolicFieldElement_h
     28 
     29 #if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
     30 #include "core/html/TypeAhead.h"
     31 #include "core/html/shadow/DateTimeFieldElement.h"
     32 
     33 namespace WebCore {
     34 
     35 // DateTimeSymbolicFieldElement represents non-numeric field of data time
     36 // format, such as: AM/PM, and month.
     37 class DateTimeSymbolicFieldElement : public DateTimeFieldElement, public TypeAheadDataSource {
     38     WTF_MAKE_NONCOPYABLE(DateTimeSymbolicFieldElement);
     39 
     40 protected:
     41     DateTimeSymbolicFieldElement(Document*, FieldOwner&, const Vector<String>&, int minimum, int maximum);
     42     size_t symbolsSize() const { return m_symbols.size(); }
     43     virtual bool hasValue() const OVERRIDE FINAL;
     44     void initialize(const AtomicString& pseudo, const String& axHelpText);
     45     virtual void setEmptyValue(EventBehavior = DispatchNoEvent) OVERRIDE FINAL;
     46     virtual void setValueAsInteger(int, EventBehavior = DispatchNoEvent) OVERRIDE FINAL;
     47     virtual int valueAsInteger() const OVERRIDE FINAL;
     48 
     49 private:
     50     static const int invalidIndex = -1;
     51 
     52     String visibleEmptyValue() const;
     53     bool indexIsInRange(int index) const { return index >= m_minimumIndex && index <= m_maximumIndex; }
     54 
     55     // DateTimeFieldElement functions.
     56     virtual void handleKeyboardEvent(KeyboardEvent*) OVERRIDE FINAL;
     57     virtual float maximumWidth(const Font&) OVERRIDE;
     58     virtual void stepDown() OVERRIDE FINAL;
     59     virtual void stepUp() OVERRIDE FINAL;
     60     virtual String value() const OVERRIDE FINAL;
     61     virtual int valueForARIAValueNow() const OVERRIDE FINAL;
     62     virtual String visibleValue() const OVERRIDE FINAL;
     63 
     64     // TypeAheadDataSource functions.
     65     virtual int indexOfSelectedOption() const OVERRIDE;
     66     virtual int optionCount() const OVERRIDE;
     67     virtual String optionAtIndex(int index) const OVERRIDE;
     68 
     69     const Vector<String> m_symbols;
     70 
     71     // We use AtomicString to share visible empty value among multiple
     72     // DateTimeEditElements in the page.
     73     const AtomicString m_visibleEmptyValue;
     74     int m_selectedIndex;
     75     TypeAhead m_typeAhead;
     76     const int m_minimumIndex;
     77     const int m_maximumIndex;
     78 };
     79 
     80 } // namespace WebCore
     81 
     82 #endif
     83 #endif
     84