bfcd51cb6a
Allow overriding the method called when the validator is associated with the window, this can be convenient to perform some initialization on the validator instance actually used as it can't be done on the initially created object itself because it will be cloned by SetValidator(), creating a new instance. Also change SetWindow() to take wxWindow instead of wxWindowBase, this still requires the cast in wxWindow::SetValidator(), but it's better to have it there rather than in wxValidator and use the simpler type in the public function signature.
120 lines
3.7 KiB
C++
120 lines
3.7 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/validate.h
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// Purpose: wxValidator class
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// Author: Julian Smart
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// Modified by:
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// Created: 29/01/98
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// Copyright: (c) 1998 Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_VALIDATE_H_
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#define _WX_VALIDATE_H_
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#include "wx/defs.h"
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#if wxUSE_VALIDATORS
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#include "wx/event.h"
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class WXDLLIMPEXP_FWD_CORE wxWindow;
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class WXDLLIMPEXP_FWD_CORE wxWindowBase;
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/*
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A validator has up to three purposes:
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1) To validate the data in the window that's associated
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with the validator.
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2) To transfer data to and from the window.
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3) To filter input, using its role as a wxEvtHandler
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to intercept e.g. OnChar.
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Note that wxValidator and derived classes use reference counting.
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*/
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class WXDLLIMPEXP_CORE wxValidator : public wxEvtHandler
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{
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public:
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wxValidator();
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wxValidator(const wxValidator& other)
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: wxEvtHandler()
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, m_validatorWindow(other.m_validatorWindow)
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{
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}
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virtual ~wxValidator();
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// Make a clone of this validator (or return NULL) - currently necessary
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// if you're passing a reference to a validator.
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// Another possibility is to always pass a pointer to a new validator
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// (so the calling code can use a copy constructor of the relevant class).
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virtual wxObject *Clone() const
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{ return NULL; }
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bool Copy(const wxValidator& val)
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{ m_validatorWindow = val.m_validatorWindow; return true; }
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// Called when the value in the window must be validated.
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// This function can pop up an error message.
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virtual bool Validate(wxWindow *WXUNUSED(parent)) { return false; }
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// Called to transfer data to the window
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virtual bool TransferToWindow() { return false; }
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// Called to transfer data from the window
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virtual bool TransferFromWindow() { return false; }
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// Called when the validator is associated with a window, may be useful to
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// override if it needs to somehow initialize the window.
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virtual void SetWindow(wxWindow *win) { m_validatorWindow = win; }
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// accessors
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wxWindow *GetWindow() const { return m_validatorWindow; }
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// validators beep by default if invalid key is pressed, this function
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// allows to change this
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static void SuppressBellOnError(bool suppress = true)
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{ ms_isSilent = suppress; }
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// test if beep is currently disabled
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static bool IsSilent() { return ms_isSilent; }
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// this function is deprecated because it handled its parameter
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// unnaturally: it disabled the bell when it was true, not false as could
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// be expected; use SuppressBellOnError() instead
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#if WXWIN_COMPATIBILITY_2_8
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static wxDEPRECATED_INLINE(
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void SetBellOnError(bool doIt = true),
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ms_isSilent = doIt;
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)
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#endif
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protected:
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wxWindow *m_validatorWindow;
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private:
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static bool ms_isSilent;
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wxDECLARE_DYNAMIC_CLASS(wxValidator);
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wxDECLARE_NO_ASSIGN_CLASS(wxValidator);
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};
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extern WXDLLIMPEXP_DATA_CORE(const wxValidator) wxDefaultValidator;
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#define wxVALIDATOR_PARAM(val) val
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#else // !wxUSE_VALIDATORS
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// wxWidgets is compiled without support for wxValidator, but we still
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// want to be able to pass wxDefaultValidator to the functions which take
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// a wxValidator parameter to avoid using "#if wxUSE_VALIDATORS"
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// everywhere
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class WXDLLIMPEXP_FWD_CORE wxValidator;
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static const wxValidator* const wxDefaultValidatorPtr = NULL;
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#define wxDefaultValidator (*wxDefaultValidatorPtr)
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// this macro allows to avoid warnings about unused parameters when
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// wxUSE_VALIDATORS == 0
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#define wxVALIDATOR_PARAM(val)
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#endif // wxUSE_VALIDATORS/!wxUSE_VALIDATORS
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#endif // _WX_VALIDATE_H_
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