e2b87f38d9
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@19128 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
309 lines
10 KiB
C++
309 lines
10 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// Name: variant.h
|
|
// Purpose: wxVariant class, container for any type
|
|
// Author: Julian Smart
|
|
// Modified by:
|
|
// Created: 10/09/98
|
|
// RCS-ID: $Id$
|
|
// Copyright: (c)
|
|
// Licence: wxWindows licence
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef _WX_VARIANT_H_
|
|
#define _WX_VARIANT_H_
|
|
|
|
#if defined(__GNUG__) && !defined(__APPLE__)
|
|
#pragma interface "variant.h"
|
|
#endif
|
|
|
|
#include "wx/defs.h"
|
|
#include "wx/object.h"
|
|
#include "wx/string.h"
|
|
#include "wx/list.h"
|
|
|
|
#if wxUSE_TIMEDATE
|
|
#include "wx/time.h"
|
|
#include "wx/date.h"
|
|
#endif // time/date
|
|
|
|
#if wxUSE_DATETIME
|
|
#include "wx/datetime.h"
|
|
#endif // wxUSE_DATETIME
|
|
|
|
#if wxUSE_ODBC
|
|
#include "wx/db.h" // will #include sqltypes.h
|
|
#endif //ODBC
|
|
|
|
#include "wx/iosfwrap.h"
|
|
|
|
/*
|
|
* wxVariantData stores the actual data in a wxVariant object,
|
|
* to allow it to store any type of data.
|
|
* Derive from this to provide custom data handling.
|
|
*
|
|
* TODO: in order to replace wxPropertyValue, we would need
|
|
* to consider adding constructors that take pointers to C++ variables,
|
|
* or removing that functionality from the wxProperty library.
|
|
* Essentially wxPropertyValue takes on some of the wxValidator functionality
|
|
* by storing pointers and not just actual values, allowing update of C++ data
|
|
* to be handled automatically. Perhaps there's another way of doing this without
|
|
* overloading wxVariant with unnecessary functionality.
|
|
*/
|
|
|
|
class WXDLLEXPORT wxVariantData: public wxObject
|
|
{
|
|
DECLARE_ABSTRACT_CLASS(wxVariantData)
|
|
public:
|
|
|
|
// Construction & destruction
|
|
wxVariantData() {};
|
|
|
|
// Override these to provide common functionality
|
|
// Copy to data
|
|
virtual void Copy(wxVariantData& data) = 0;
|
|
virtual bool Eq(wxVariantData& data) const = 0;
|
|
#if wxUSE_STD_IOSTREAM
|
|
virtual bool Write(wxSTD ostream& str) const = 0;
|
|
#endif
|
|
virtual bool Write(wxString& str) const = 0;
|
|
#if wxUSE_STD_IOSTREAM
|
|
virtual bool Read(wxSTD istream& str) = 0;
|
|
#endif
|
|
virtual bool Read(wxString& str) = 0;
|
|
// What type is it? Return a string name.
|
|
virtual wxString GetType() const = 0;
|
|
};
|
|
|
|
/*
|
|
* wxVariant can store any kind of data, but has some basic types
|
|
* built in.
|
|
* NOTE: this eventually should have a reference-counting implementation.
|
|
* PLEASE, if you change it to ref-counting, make sure it doesn't involve bloating
|
|
* this class too much.
|
|
*/
|
|
|
|
class WXDLLEXPORT wxVariant: public wxObject
|
|
{
|
|
DECLARE_DYNAMIC_CLASS(wxVariant)
|
|
public:
|
|
|
|
// Construction & destruction
|
|
wxVariant();
|
|
wxVariant(double val, const wxString& name = wxEmptyString);
|
|
wxVariant(long val, const wxString& name = wxEmptyString);
|
|
#ifdef HAVE_BOOL
|
|
wxVariant(bool val, const wxString& name = wxEmptyString);
|
|
#endif
|
|
wxVariant(char val, const wxString& name = wxEmptyString);
|
|
wxVariant(const wxString& val, const wxString& name = wxEmptyString);
|
|
wxVariant(const wxChar* val, const wxString& name = wxEmptyString); // Necessary or VC++ assumes bool!
|
|
wxVariant(const wxStringList& val, const wxString& name = wxEmptyString);
|
|
wxVariant(const wxList& val, const wxString& name = wxEmptyString); // List of variants
|
|
// For some reason, Watcom C++ can't link variant.cpp with time/date classes compiled
|
|
#if wxUSE_TIMEDATE && !defined(__WATCOMC__)
|
|
wxVariant(const wxTime& val, const wxString& name = wxEmptyString); // Time
|
|
wxVariant(const wxDate& val, const wxString& name = wxEmptyString); // Date
|
|
#endif
|
|
wxVariant(void* ptr, const wxString& name = wxEmptyString); // void* (general purpose)
|
|
wxVariant(wxVariantData* data, const wxString& name = wxEmptyString); // User-defined data
|
|
//TODO: Need to document
|
|
#if wxUSE_DATETIME
|
|
wxVariant(const wxDateTime& val, const wxString& name = wxEmptyString); // Date
|
|
#endif // wxUSE_DATETIME
|
|
wxVariant(const wxArrayString& val, const wxString& name = wxEmptyString); // String array
|
|
#if wxUSE_ODBC
|
|
wxVariant(const DATE_STRUCT* valptr, const wxString& name = wxEmptyString); // DateTime
|
|
wxVariant(const TIME_STRUCT* valptr, const wxString& name = wxEmptyString); // DateTime
|
|
wxVariant(const TIMESTAMP_STRUCT* valptr, const wxString& name = wxEmptyString); // DateTime
|
|
#endif
|
|
//TODO: End of Need to document
|
|
|
|
wxVariant(const wxVariant& variant);
|
|
~wxVariant();
|
|
|
|
// Generic operators
|
|
// Assignment
|
|
void operator= (const wxVariant& variant);
|
|
|
|
//TODO: Need to document
|
|
#if wxUSE_DATETIME
|
|
bool operator== (const wxDateTime& value) const;
|
|
bool operator!= (const wxDateTime& value) const;
|
|
void operator= (const wxDateTime& value) ;
|
|
#endif // wxUSE_DATETIME
|
|
|
|
bool operator== (const wxArrayString& value) const;
|
|
bool operator!= (const wxArrayString& value) const;
|
|
void operator= (const wxArrayString& value) ;
|
|
#if wxUSE_ODBC
|
|
void operator= (const DATE_STRUCT* value) ;
|
|
void operator= (const TIME_STRUCT* value) ;
|
|
void operator= (const TIMESTAMP_STRUCT* value) ;
|
|
#endif
|
|
//TODO: End of Need to document
|
|
|
|
// Assignment using data, e.g.
|
|
// myVariant = new wxStringVariantData("hello");
|
|
void operator= (wxVariantData* variantData);
|
|
bool operator== (const wxVariant& variant) const;
|
|
bool operator!= (const wxVariant& variant) const;
|
|
|
|
// Specific operators
|
|
bool operator== (double value) const;
|
|
bool operator!= (double value) const;
|
|
void operator= (double value) ;
|
|
bool operator== (long value) const;
|
|
bool operator!= (long value) const;
|
|
void operator= (long value) ;
|
|
bool operator== (char value) const;
|
|
bool operator!= (char value) const;
|
|
void operator= (char value) ;
|
|
#ifdef HAVE_BOOL
|
|
bool operator== (bool value) const;
|
|
bool operator!= (bool value) const;
|
|
void operator= (bool value) ;
|
|
#endif
|
|
bool operator== (const wxString& value) const;
|
|
bool operator!= (const wxString& value) const;
|
|
void operator= (const wxString& value) ;
|
|
void operator= (const wxChar* value) ; // Necessary or VC++ assumes bool!
|
|
bool operator== (const wxStringList& value) const;
|
|
bool operator!= (const wxStringList& value) const;
|
|
void operator= (const wxStringList& value) ;
|
|
bool operator== (const wxList& value) const;
|
|
bool operator!= (const wxList& value) const;
|
|
void operator= (const wxList& value) ;
|
|
// For some reason, Watcom C++ can't link variant.cpp with time/date classes compiled
|
|
#if wxUSE_TIMEDATE && !defined(__WATCOMC__)
|
|
bool operator== (const wxTime& value) const;
|
|
bool operator!= (const wxTime& value) const;
|
|
void operator= (const wxTime& value) ;
|
|
bool operator== (const wxDate& value) const;
|
|
bool operator!= (const wxDate& value) const;
|
|
void operator= (const wxDate& value) ;
|
|
#endif
|
|
bool operator== (void* value) const;
|
|
bool operator!= (void* value) const;
|
|
void operator= (void* value) ;
|
|
|
|
// Treat a list variant as an array
|
|
wxVariant operator[] (size_t idx) const;
|
|
wxVariant& operator[] (size_t idx) ;
|
|
|
|
// Implicit conversion to a wxString
|
|
inline operator wxString () const { return MakeString(); }
|
|
wxString MakeString() const;
|
|
|
|
// Other implicit conversions
|
|
inline operator double () const { return GetDouble(); }
|
|
inline operator char () const { return GetChar(); }
|
|
inline operator long () const { return GetLong(); }
|
|
inline operator bool () const { return GetBool(); }
|
|
// For some reason, Watcom C++ can't link variant.cpp with time/date classes compiled
|
|
#if wxUSE_TIMEDATE && !defined(__WATCOMC__)
|
|
inline operator wxTime () const { return GetTime(); }
|
|
inline operator wxDate () const { return GetDate(); }
|
|
#endif
|
|
inline operator void* () const { return GetVoidPtr(); }
|
|
//TODO: Need to document
|
|
#if wxUSE_DATETIME
|
|
inline operator wxDateTime () const { return GetDateTime(); }
|
|
#endif // wxUSE_DATETIME
|
|
//TODO: End of Need to document
|
|
|
|
// Accessors
|
|
// Sets/gets name
|
|
inline void SetName(const wxString& name) { m_name = name; }
|
|
inline const wxString& GetName() const { return m_name; }
|
|
|
|
// Tests whether there is data
|
|
inline bool IsNull() const { return (m_data == (wxVariantData*) NULL); }
|
|
|
|
wxVariantData* GetData() const { return m_data; }
|
|
void SetData(wxVariantData* data) ;
|
|
|
|
// Returns a string representing the type of the variant,
|
|
// e.g. "string", "bool", "stringlist", "list", "double", "long"
|
|
wxString GetType() const;
|
|
|
|
bool IsType(const wxString& type) const;
|
|
|
|
// Return the number of elements in a list
|
|
int GetCount() const;
|
|
|
|
// Value accessors
|
|
double GetReal() const ;
|
|
inline double GetDouble() const { return GetReal(); };
|
|
long GetInteger() const ;
|
|
inline long GetLong() const { return GetInteger(); };
|
|
char GetChar() const ;
|
|
bool GetBool() const ;
|
|
wxString GetString() const ;
|
|
wxList& GetList() const ;
|
|
wxStringList& GetStringList() const ;
|
|
|
|
// For some reason, Watcom C++ can't link variant.cpp with time/date classes compiled
|
|
#if wxUSE_TIMEDATE && !defined(__WATCOMC__)
|
|
wxTime GetTime() const ;
|
|
wxDate GetDate() const ;
|
|
#endif
|
|
void* GetVoidPtr() const ;
|
|
//TODO: Need to document
|
|
#if wxUSE_DATETIME
|
|
wxDateTime GetDateTime() const ;
|
|
#endif // wxUSE_DATETIME
|
|
wxArrayString GetArrayString() const;
|
|
//TODO: End of Need to document
|
|
|
|
// Operations
|
|
// Make NULL (i.e. delete the data)
|
|
void MakeNull();
|
|
|
|
// Make empty list
|
|
void NullList();
|
|
|
|
// Append to list
|
|
void Append(const wxVariant& value);
|
|
|
|
// Insert at front of list
|
|
void Insert(const wxVariant& value);
|
|
|
|
// Returns TRUE if the variant is a member of the list
|
|
bool Member(const wxVariant& value) const;
|
|
|
|
// Deletes the nth element of the list
|
|
bool Delete(int item);
|
|
|
|
// Clear list
|
|
void ClearList();
|
|
|
|
// Implementation
|
|
public:
|
|
// Type conversion
|
|
bool Convert(long* value) const;
|
|
bool Convert(bool* value) const;
|
|
bool Convert(double* value) const;
|
|
bool Convert(wxString* value) const;
|
|
bool Convert(char* value) const;
|
|
// For some reason, Watcom C++ can't link variant.cpp with time/date classes compiled
|
|
#if wxUSE_TIMEDATE && !defined(__WATCOMC__)
|
|
bool Convert(wxTime* value) const;
|
|
bool Convert(wxDate* value) const;
|
|
#endif
|
|
//TODO: Need to document
|
|
#if wxUSE_DATETIME
|
|
bool Convert(wxDateTime* value) const;
|
|
#endif // wxUSE_DATETIME
|
|
//TODO: End of Need to document
|
|
|
|
// Attributes
|
|
protected:
|
|
wxVariantData* m_data;
|
|
wxString m_name;
|
|
};
|
|
|
|
extern wxVariant WXDLLEXPORT wxNullVariant;
|
|
|
|
#endif
|
|
// _WX_VARIANT_H_
|