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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html 
/* 
******************************************************************************** 
*   Copyright (C) 2005-2015, International Business Machines 
*   Corporation and others.  All Rights Reserved. 
******************************************************************************** 
* 
* File WINNMFMT.H 
* 
******************************************************************************** 
*/ 
 
#ifndef __WINNMFMT 
#define __WINNMFMT 
 
#include "unicode/utypes.h" 
 
#if U_PLATFORM_USES_ONLY_WIN32_API 
 
#include "unicode/format.h" 
#include "unicode/datefmt.h" 
#include "unicode/calendar.h" 
#include "unicode/ustring.h" 
#include "unicode/locid.h" 
 
#if !UCONFIG_NO_FORMATTING 
 
/** 
 * \file  
 * \brief C++ API: Format numbers using Windows API. 
 */ 
 
U_NAMESPACE_BEGIN 
 
union FormatInfo; 
 
class Win32NumberFormat : public NumberFormat 
{ 
public: 
    Win32NumberFormat(const Locale &locale, UBool currency, UErrorCode &status); 
 
    Win32NumberFormat(const Win32NumberFormat &other); 
 
    virtual ~Win32NumberFormat(); 
 
    virtual Win32NumberFormat *clone() const;
 
    Win32NumberFormat &operator=(const Win32NumberFormat &other); 
 
    /** 
     * Format a double number. Concrete subclasses must implement 
     * these pure virtual methods. 
     * 
     * @param number    The value to be formatted. 
     * @param appendTo  Output parameter to receive result. 
     *                  Result is appended to existing contents. 
     * @param pos       On input: an alignment field, if desired. 
     *                  On output: the offsets of the alignment field. 
     * @return          Reference to 'appendTo' parameter. 
     */ 
    virtual UnicodeString& format(double number, 
                                  UnicodeString& appendTo, 
                                  FieldPosition& pos) const; 
    /** 
     * Format a long number. Concrete subclasses must implement 
     * these pure virtual methods. 
     * 
     * @param number    The value to be formatted. 
     * @param appendTo  Output parameter to receive result. 
     *                  Result is appended to existing contents. 
     * @param pos       On input: an alignment field, if desired. 
     *                  On output: the offsets of the alignment field. 
     * @return          Reference to 'appendTo' parameter. 
    */ 
    virtual UnicodeString& format(int32_t number, 
                                  UnicodeString& appendTo, 
                                  FieldPosition& pos) const; 
 
    /** 
     * Format an int64 number. 
     * 
     * @param number    The value to be formatted. 
     * @param appendTo  Output parameter to receive result. 
     *                  Result is appended to existing contents. 
     * @param pos       On input: an alignment field, if desired. 
     *                  On output: the offsets of the alignment field. 
     * @return          Reference to 'appendTo' parameter. 
    */ 
    virtual UnicodeString& format(int64_t number, 
                                  UnicodeString& appendTo, 
                                  FieldPosition& pos) const; 
 
    using NumberFormat::format; 
 
// Use the default behavior for the following. 
//    virtual UnicodeString &format(double number, UnicodeString &appendTo) const; 
//    virtual UnicodeString &format(int32_t number, UnicodeString &appendTo) const; 
//    virtual UnicodeString &format(int64_t number, UnicodeString &appendTo) const; 
 
    virtual void parse(const UnicodeString& text, Formattable& result, ParsePosition& parsePosition) const; 
 
    /** 
     * Sets the maximum number of digits allowed in the fraction portion of a 
     * number. maximumFractionDigits must be >= minimumFractionDigits.  If the 
     * new value for maximumFractionDigits is less than the current value 
     * of minimumFractionDigits, then minimumFractionDigits will also be set to 
     * the new value. 
     * @param newValue    the new value to be set. 
     * @see getMaximumFractionDigits 
     */ 
    virtual void setMaximumFractionDigits(int32_t newValue); 
 
    /** 
     * Sets the minimum number of digits allowed in the fraction portion of a 
     * number. minimumFractionDigits must be <= maximumFractionDigits.   If the 
     * new value for minimumFractionDigits exceeds the current value 
     * of maximumFractionDigits, then maximumIntegerDigits will also be set to 
     * the new value 
     * @param newValue    the new value to be set. 
     * @see getMinimumFractionDigits 
     */ 
    virtual void setMinimumFractionDigits(int32_t newValue); 
 
    /** 
     * Return the class ID for this class. This is useful only for comparing to 
     * a return value from getDynamicClassID(). For example: 
     * <pre> 
     * .   Base* polymorphic_pointer = createPolymorphicObject(); 
     * .   if (polymorphic_pointer->getDynamicClassID() == 
     * .       derived::getStaticClassID()) ...
     * </pre> 
     * @return          The class ID for all objects of this class. 
     */ 
    U_I18N_API static UClassID U_EXPORT2 getStaticClassID(void); 
 
    /** 
     * Returns a unique class ID POLYMORPHICALLY. Pure virtual override. This 
     * method is to implement a simple version of RTTI, since not all C++ 
     * compilers support genuine RTTI. Polymorphic operator==() and clone() 
     * methods call this method. 
     * 
     * @return          The class ID for this object. All objects of a 
     *                  given class have the same class ID.  Objects of 
     *                  other classes have different class IDs. 
     */ 
    virtual UClassID getDynamicClassID(void) const; 
 
private: 
    UnicodeString &format(int32_t numDigits, UnicodeString &appendTo, const wchar_t *format, ...) const; 
 
    UBool fCurrency; 
    Locale fLocale; 
    int32_t fLCID; 
    FormatInfo *fFormatInfo; 
    UBool fFractionDigitsSet; 
 
    UnicodeString* fWindowsLocaleName; // Stores the equivalent Windows locale name.
}; 
 
U_NAMESPACE_END 
 
#endif /* #if !UCONFIG_NO_FORMATTING */ 
 
#endif // U_PLATFORM_USES_ONLY_WIN32_API 
 
#endif // __WINNMFMT