f254e2424a
Detect when incompatible styles are used (this required changing the value of wxCHK_2STATE to be non-null) and sanitize the styles (after asserting) in this case. Put the validation code in wxCheckBoxBase instead of having slightly different versions of it in port-specific wxCheckBox implementations. Add a unit test checking that the expected asserts are indeed generated. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65824 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
205 lines
5.8 KiB
C++
205 lines
5.8 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: wx/checkbox.h
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// Purpose: wxCheckBox class interface
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 07.09.00
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// RCS-ID: $Id$
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// Copyright: (c) wxWidgets team
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_CHECKBOX_H_BASE_
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#define _WX_CHECKBOX_H_BASE_
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#include "wx/defs.h"
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#if wxUSE_CHECKBOX
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#include "wx/control.h"
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/*
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* wxCheckBox style flags
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* (Using wxCHK_* because wxCB_* is used by wxComboBox).
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* Determine whether to use a 3-state or 2-state
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* checkbox. 3-state enables to differentiate
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* between 'unchecked', 'checked' and 'undetermined'.
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*
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* In addition to the styles here it is also possible to specify just 0 which
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* is treated the same as wxCHK_2STATE for compatibility (but using explicit
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* flag is preferred).
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*/
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#define wxCHK_2STATE 0x4000
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#define wxCHK_3STATE 0x1000
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/*
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* If this style is set the user can set the checkbox to the
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* undetermined state. If not set the undetermined set can only
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* be set programmatically.
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* This style can only be used with 3 state checkboxes.
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*/
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#define wxCHK_ALLOW_3RD_STATE_FOR_USER 0x2000
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/*
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* The possible states of a 3-state checkbox (Compatible
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* with the 2-state checkbox).
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*/
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enum wxCheckBoxState
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{
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wxCHK_UNCHECKED,
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wxCHK_CHECKED,
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wxCHK_UNDETERMINED /* 3-state checkbox only */
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};
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extern WXDLLIMPEXP_DATA_CORE(const char) wxCheckBoxNameStr[];
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// ----------------------------------------------------------------------------
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// wxCheckBox: a control which shows a label and a box which may be checked
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxCheckBoxBase : public wxControl
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{
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public:
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wxCheckBoxBase() { }
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// set/get the checked status of the listbox
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virtual void SetValue(bool value) = 0;
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virtual bool GetValue() const = 0;
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bool IsChecked() const
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{
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wxASSERT_MSG( !Is3State(), wxT("Calling IsChecked() doesn't make sense for")
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wxT(" a three state checkbox, Use Get3StateValue() instead") );
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return GetValue();
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}
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wxCheckBoxState Get3StateValue() const
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{
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wxCheckBoxState state = DoGet3StateValue();
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if ( state == wxCHK_UNDETERMINED && !Is3State() )
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{
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// Undetermined state with a 2-state checkbox??
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wxFAIL_MSG( wxT("DoGet3StateValue() says the 2-state checkbox is ")
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wxT("in an undetermined/third state") );
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state = wxCHK_UNCHECKED;
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}
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return state;
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}
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void Set3StateValue(wxCheckBoxState state)
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{
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if ( state == wxCHK_UNDETERMINED && !Is3State() )
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{
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wxFAIL_MSG(wxT("Setting a 2-state checkbox to undetermined state"));
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state = wxCHK_UNCHECKED;
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}
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DoSet3StateValue(state);
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}
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bool Is3State() const { return HasFlag(wxCHK_3STATE); }
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bool Is3rdStateAllowedForUser() const
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{
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return HasFlag(wxCHK_ALLOW_3RD_STATE_FOR_USER);
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}
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virtual bool HasTransparentBackground() { return true; }
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// wxCheckBox-specific processing after processing the update event
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virtual void DoUpdateWindowUI(wxUpdateUIEvent& event)
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{
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wxControl::DoUpdateWindowUI(event);
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if ( event.GetSetChecked() )
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SetValue(event.GetChecked());
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}
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protected:
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// choose the default border for this window
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virtual wxBorder GetDefaultBorder() const { return wxBORDER_NONE; }
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virtual void DoSet3StateValue(wxCheckBoxState WXUNUSED(state)) { wxFAIL; }
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virtual wxCheckBoxState DoGet3StateValue() const
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{
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wxFAIL;
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return wxCHK_UNCHECKED;
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}
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// Helper function to be called from derived classes Create()
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// implementations: it checks that the style doesn't contain any
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// incompatible bits and modifies it to be sane if it does.
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static void WXValidateStyle(long *stylePtr)
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{
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long& style = *stylePtr;
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if ( style == 0 )
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{
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// For compatibility we use absence of style flags as wxCHK_2STATE
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// because wxCHK_2STATE used to have the value of 0 and some
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// existing code may use 0 instead of it.
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style = wxCHK_2STATE;
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}
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else if ( style & wxCHK_3STATE )
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{
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if ( style & wxCHK_2STATE )
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{
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wxFAIL_MSG( "wxCHK_2STATE and wxCHK_3STATE can't be used "
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"together" );
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style &= ~wxCHK_3STATE;
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}
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}
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else // No wxCHK_3STATE
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{
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if ( !(style & wxCHK_2STATE) )
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{
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wxFAIL_MSG( "Either wxCHK_2STATE or wxCHK_3STATE must be "
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"specified" );
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style |= wxCHK_2STATE;
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}
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if ( style & wxCHK_ALLOW_3RD_STATE_FOR_USER )
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{
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wxFAIL_MSG( "wxCHK_ALLOW_3RD_STATE_FOR_USER doesn't make sense "
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"without wxCHK_3STATE" );
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style &= ~wxCHK_ALLOW_3RD_STATE_FOR_USER;
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}
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}
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}
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private:
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wxDECLARE_NO_COPY_CLASS(wxCheckBoxBase);
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};
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#if defined(__WXUNIVERSAL__)
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#include "wx/univ/checkbox.h"
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#elif defined(__WXMSW__)
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#include "wx/msw/checkbox.h"
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#elif defined(__WXMOTIF__)
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#include "wx/motif/checkbox.h"
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#elif defined(__WXGTK20__)
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#include "wx/gtk/checkbox.h"
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#elif defined(__WXGTK__)
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#include "wx/gtk1/checkbox.h"
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#elif defined(__WXMAC__)
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#include "wx/osx/checkbox.h"
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#elif defined(__WXCOCOA__)
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#include "wx/cocoa/checkbox.h"
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#elif defined(__WXPM__)
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#include "wx/os2/checkbox.h"
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#elif defined(__WXPALMOS__)
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#include "wx/palmos/checkbox.h"
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#endif
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#endif // wxUSE_CHECKBOX
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#endif
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// _WX_CHECKBOX_H_BASE_
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