5c33522fca
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@56644 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
463 lines
18 KiB
C++
463 lines
18 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/ctrlsub.h (read: "wxConTRoL with SUBitems")
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// Purpose: wxControlWithItems interface
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 22.10.99
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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_CTRLSUB_H_BASE_
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#define _WX_CTRLSUB_H_BASE_
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#include "wx/defs.h"
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#if wxUSE_CONTROLS
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#include "wx/arrstr.h"
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#include "wx/control.h" // base class
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// ----------------------------------------------------------------------------
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// wxItemContainer defines an interface which is implemented by all controls
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// which have string subitems each of which may be selected.
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//
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// It is decomposed in wxItemContainerImmutable which omits all methods
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// adding/removing items and is used by wxRadioBox and wxItemContainer itself.
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//
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// Examples: wxListBox, wxCheckListBox, wxChoice and wxComboBox (which
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// implements an extended interface deriving from this one)
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxItemContainerImmutable
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{
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public:
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wxItemContainerImmutable() { }
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virtual ~wxItemContainerImmutable();
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// accessing strings
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// -----------------
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virtual unsigned int GetCount() const = 0;
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bool IsEmpty() const { return GetCount() == 0; }
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virtual wxString GetString(unsigned int n) const = 0;
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wxArrayString GetStrings() const;
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virtual void SetString(unsigned int n, const wxString& s) = 0;
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// finding string natively is either case sensitive or insensitive
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// but never both so fall back to this base version for not
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// supported search type
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virtual int FindString(const wxString& s, bool bCase = false) const
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{
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unsigned int count = GetCount();
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for ( unsigned int i = 0; i < count ; ++i )
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{
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if (GetString(i).IsSameAs( s , bCase ))
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return (int)i;
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}
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return wxNOT_FOUND;
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}
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// selection
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// ---------
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virtual void SetSelection(int n) = 0;
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virtual int GetSelection() const = 0;
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// set selection to the specified string, return false if not found
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bool SetStringSelection(const wxString& s);
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// return the selected string or empty string if none
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virtual wxString GetStringSelection() const;
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// this is the same as SetSelection( for single-selection controls but
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// reads better for multi-selection ones
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void Select(int n) { SetSelection(n); }
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protected:
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// check that the index is valid
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bool IsValid(unsigned int n) const { return n < GetCount(); }
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bool IsValidInsert(unsigned int n) const { return n <= GetCount(); }
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};
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// ----------------------------------------------------------------------------
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// wxItemContainer extends wxItemContainerImmutable interface with methods
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// for adding/removing items.
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//
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// Classes deriving from this one must override DoInsertItems() to implement
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// adding items to the control. This can often be implemented more efficiently
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// than simply looping over the elements and inserting them but if this is not
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// the case, the generic DoInsertItemsInLoop can be used in implementation, but
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// in this case DoInsertItem() needs to be overridden.
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxItemContainer : public wxItemContainerImmutable
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{
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private:
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// AppendItems() and InsertItems() helpers just call DoAppend/InsertItems()
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// after doing some checks
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//
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// NB: they're defined here so that they're inlined when used in public part
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int AppendItems(const wxArrayStringsAdapter& items,
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void **clientData,
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wxClientDataType type)
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{
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if ( items.IsEmpty() )
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return wxNOT_FOUND;
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return DoAppendItems(items, clientData, type);
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}
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int AppendItems(const wxArrayStringsAdapter& items)
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{
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return AppendItems(items, NULL, wxClientData_None);
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}
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int AppendItems(const wxArrayStringsAdapter& items, void **clientData)
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{
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wxASSERT_MSG( GetClientDataType() != wxClientData_Object,
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_T("can't mix different types of client data") );
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return AppendItems(items, clientData, wxClientData_Void);
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}
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int AppendItems(const wxArrayStringsAdapter& items,
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wxClientData **clientData)
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{
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wxASSERT_MSG( GetClientDataType() != wxClientData_Void,
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_T("can't mix different types of client data") );
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return AppendItems(items, reinterpret_cast<void **>(clientData),
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wxClientData_Object);
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}
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int InsertItems(const wxArrayStringsAdapter& items,
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unsigned int pos,
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void **clientData,
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wxClientDataType type)
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{
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wxASSERT_MSG( !IsSorted(), _T("can't insert items in sorted control") );
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wxCHECK_MSG( pos <= GetCount(), wxNOT_FOUND,
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_T("position out of range") );
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// not all derived classes handle empty arrays correctly in
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// DoInsertItems() and besides it really doesn't make much sense to do
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// this (for append it could correspond to creating an initially empty
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// control but why would anybody need to insert 0 items?)
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wxCHECK_MSG( !items.IsEmpty(), wxNOT_FOUND,
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_T("need something to insert") );
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return DoInsertItems(items, pos, clientData, type);
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}
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int InsertItems(const wxArrayStringsAdapter& items, unsigned int pos)
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{
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return InsertItems(items, pos, NULL, wxClientData_None);
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}
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int InsertItems(const wxArrayStringsAdapter& items,
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unsigned int pos,
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void **clientData)
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{
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wxASSERT_MSG( GetClientDataType() != wxClientData_Object,
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_T("can't mix different types of client data") );
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return InsertItems(items, pos, clientData, wxClientData_Void);
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}
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int InsertItems(const wxArrayStringsAdapter& items,
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unsigned int pos,
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wxClientData **clientData)
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{
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wxASSERT_MSG( GetClientDataType() != wxClientData_Void,
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_T("can't mix different types of client data") );
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return InsertItems(items, pos,
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reinterpret_cast<void **>(clientData),
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wxClientData_Object);
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}
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public:
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wxItemContainer() { m_clientDataItemsType = wxClientData_None; }
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virtual ~wxItemContainer();
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// adding items
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// ------------
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// append single item, return its position in the control (which can be
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// different from the last one if the control is sorted)
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int Append(const wxString& item)
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{ return AppendItems(item); }
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int Append(const wxString& item, void *clientData)
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{ return AppendItems(item, &clientData); }
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int Append(const wxString& item, wxClientData *clientData)
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{ return AppendItems(item, &clientData); }
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// append several items at once to the control, return the position of the
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// last item appended
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int Append(const wxArrayString& items)
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{ return AppendItems(items); }
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int Append(const wxArrayString& items, void **clientData)
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{ return AppendItems(items, clientData); }
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int Append(const wxArrayString& items, wxClientData **clientData)
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{ return AppendItems(items, clientData); }
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int Append(unsigned int n, const wxString *items)
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{ return AppendItems(wxArrayStringsAdapter(n, items)); }
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int Append(unsigned int n, const wxString *items, void **clientData)
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{ return AppendItems(wxArrayStringsAdapter(n, items), clientData); }
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int Append(unsigned int n,
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const wxString *items,
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wxClientData **clientData)
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{ return AppendItems(wxArrayStringsAdapter(n, items), clientData); }
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// only for RTTI needs (separate name)
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void AppendString(const wxString& item)
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{ Append(item); }
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// inserting items: not for sorted controls!
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// -----------------------------------------
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// insert single item at the given position, return its effective position
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int Insert(const wxString& item, unsigned int pos)
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{ return InsertItems(item, pos); }
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int Insert(const wxString& item, unsigned int pos, void *clientData)
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{ return InsertItems(item, pos, &clientData); }
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int Insert(const wxString& item, unsigned int pos, wxClientData *clientData)
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{ return InsertItems(item, pos, &clientData); }
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// insert several items at once into the control, return the index of the
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// last item inserted
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int Insert(const wxArrayString& items, unsigned int pos)
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{ return InsertItems(items, pos); }
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int Insert(const wxArrayString& items, unsigned int pos, void **clientData)
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{ return InsertItems(items, pos, clientData); }
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int Insert(const wxArrayString& items,
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unsigned int pos,
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wxClientData **clientData)
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{ return InsertItems(items, pos, clientData); }
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int Insert(unsigned int n, const wxString *items, unsigned int pos)
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{ return InsertItems(wxArrayStringsAdapter(n, items), pos); }
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int Insert(unsigned int n,
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const wxString *items,
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unsigned int pos,
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void **clientData)
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{ return InsertItems(wxArrayStringsAdapter(n, items), pos, clientData); }
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int Insert(unsigned int n,
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const wxString *items,
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unsigned int pos,
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wxClientData **clientData)
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{ return InsertItems(wxArrayStringsAdapter(n, items), pos, clientData); }
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// replacing items
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// ---------------
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void Set(const wxArrayString& items)
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{ Clear(); Append(items); }
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void Set(const wxArrayString& items, void **clientData)
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{ Clear(); Append(items, clientData); }
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void Set(const wxArrayString& items, wxClientData **clientData)
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{ Clear(); Append(items, clientData); }
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void Set(unsigned int n, const wxString *items)
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{ Clear(); Append(n, items); }
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void Set(unsigned int n, const wxString *items, void **clientData)
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{ Clear(); Append(n, items, clientData); }
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void Set(unsigned int n, const wxString *items, wxClientData **clientData)
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{ Clear(); Append(n, items, clientData); }
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// deleting items
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// --------------
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void Clear();
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void Delete(unsigned int pos);
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// various accessors
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// -----------------
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// The control may maintain its items in a sorted order in which case
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// items are automatically inserted at the right position when they are
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// inserted or appended. Derived classes have to override this method if
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// they implement sorting, typically by returning HasFlag(wxXX_SORT)
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virtual bool IsSorted() const { return false; }
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// client data stuff
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// -----------------
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void SetClientData(unsigned int n, void* clientData);
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void* GetClientData(unsigned int n) const;
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void SetClientObject(unsigned int n, wxClientData* clientData);
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wxClientData* GetClientObject(unsigned int n) const;
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// return the type of client data stored in this control: usually it just
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// returns m_clientDataItemsType but must be overridden in the controls
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// which delegate their client data storage to another one (e.g. wxChoice
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// in wxUniv which stores data in wxListBox which it uses anyhow); don't
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// forget to override SetClientDataType() if you override this one
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//
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// NB: for this to work no code should ever access m_clientDataItemsType
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// directly but only via this function!
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virtual wxClientDataType GetClientDataType() const
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{ return m_clientDataItemsType; }
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bool HasClientData() const
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{ return GetClientDataType() != wxClientData_None; }
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bool HasClientObjectData() const
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{ return GetClientDataType() == wxClientData_Object; }
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bool HasClientUntypedData() const
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{ return GetClientDataType() == wxClientData_Void; }
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protected:
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// there is usually no need to override this method but you can do it if it
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// is more convenient to only do "real" insertions in DoInsertItems() and
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// to implement items appending here (in which case DoInsertItems() should
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// call this method if pos == GetCount() as it can still be called in this
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// case if public Insert() is called with such position)
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virtual int DoAppendItems(const wxArrayStringsAdapter& items,
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void **clientData,
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wxClientDataType type)
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{
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return DoInsertItems(items, GetCount(), clientData, type);
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}
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// this method must be implemented to insert the items into the control at
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// position pos which can be GetCount() meaning that the items should be
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// appended; for the sorted controls the position can be ignored
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//
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// the derived classes typically use AssignNewItemClientData() to
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// associate the data with the items as they're being inserted
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//
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// the method should return the index of the position the last item was
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// inserted into or wxNOT_FOUND if an error occurred
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virtual int DoInsertItems(const wxArrayStringsAdapter & items,
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unsigned int pos,
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void **clientData,
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wxClientDataType type) = 0;
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// before the client data is set for the first time for the control which
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// hadn't had it before, DoInitItemClientData() is called which gives the
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// derived class the possibility to initialize its client data storage only
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// when client data is really used
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virtual void DoInitItemClientData() { }
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virtual void DoSetItemClientData(unsigned int n, void *clientData) = 0;
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virtual void *DoGetItemClientData(unsigned int n) const = 0;
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virtual void DoClear() = 0;
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virtual void DoDeleteOneItem(unsigned int pos) = 0;
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// methods useful for the derived classes which don't have any better way
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// of adding multiple items to the control than doing it one by one: such
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// classes should call DoInsertItemsInLoop() from their DoInsert() and
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// override DoInsertOneItem() to perform the real insertion
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virtual int DoInsertOneItem(const wxString& item, unsigned int pos);
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int DoInsertItemsInLoop(const wxArrayStringsAdapter& items,
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unsigned int pos,
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void **clientData,
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wxClientDataType type);
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// helper for DoInsertItems(): n is the index into clientData, pos is the
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// position of the item in the control
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void AssignNewItemClientData(unsigned int pos,
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void **clientData,
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unsigned int n,
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wxClientDataType type);
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// free the client object associated with the item at given position and
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// set it to NULL (must only be called if HasClientObjectData())
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void ResetItemClientObject(unsigned int n);
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// set the type of the client data stored in this control: override this if
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// you override GetClientDataType()
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virtual void SetClientDataType(wxClientDataType clientDataItemsType)
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{
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m_clientDataItemsType = clientDataItemsType;
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}
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private:
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// the type of the client data for the items
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wxClientDataType m_clientDataItemsType;
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};
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// this macro must (unfortunately) be used in any class deriving from both
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// wxItemContainer and wxControl because otherwise there is ambiguity when
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// calling GetClientXXX() functions -- the compiler can't choose between the
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// two versions
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#define wxCONTROL_ITEMCONTAINER_CLIENTDATAOBJECT_RECAST \
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void SetClientData(void *data) \
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{ wxEvtHandler::SetClientData(data); } \
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void *GetClientData() const \
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{ return wxEvtHandler::GetClientData(); } \
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void SetClientObject(wxClientData *data) \
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{ wxEvtHandler::SetClientObject(data); } \
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wxClientData *GetClientObject() const \
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{ return wxEvtHandler::GetClientObject(); } \
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void SetClientData(unsigned int n, void* clientData) \
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{ wxItemContainer::SetClientData(n, clientData); } \
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void* GetClientData(unsigned int n) const \
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{ return wxItemContainer::GetClientData(n); } \
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void SetClientObject(unsigned int n, wxClientData* clientData) \
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{ wxItemContainer::SetClientObject(n, clientData); } \
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wxClientData* GetClientObject(unsigned int n) const \
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{ return wxItemContainer::GetClientObject(n); }
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class WXDLLIMPEXP_CORE wxControlWithItemsBase : public wxControl,
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public wxItemContainer
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{
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public:
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wxControlWithItemsBase() { }
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// we have to redefine these functions here to avoid ambiguities in classes
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// deriving from us which would arise otherwise because both base classses
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// have the methods with the same names - hopefully, a smart compiler can
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// optimize away these simple inline wrappers so we don't suffer much from
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// this
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wxCONTROL_ITEMCONTAINER_CLIENTDATAOBJECT_RECAST
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// usually the controls like list/combo boxes have their own background
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// colour
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virtual bool ShouldInheritColours() const { return false; }
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protected:
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// fill in the client object or data field of the event as appropriate
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//
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// calls InitCommandEvent() and, if n != wxNOT_FOUND, also sets the per
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// item client data
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void InitCommandEventWithItems(wxCommandEvent& event, int n);
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private:
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DECLARE_NO_COPY_CLASS(wxControlWithItemsBase)
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};
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// define the platform-specific wxControlWithItems class
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#if defined(__WXMSW__)
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#include "wx/msw/ctrlsub.h"
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#elif defined(__WXMOTIF__)
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#include "wx/motif/ctrlsub.h"
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#else
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class WXDLLIMPEXP_CORE wxControlWithItems : public wxControlWithItemsBase
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{
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public:
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wxControlWithItems() { }
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private:
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DECLARE_ABSTRACT_CLASS(wxControlWithItems)
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DECLARE_NO_COPY_CLASS(wxControlWithItems)
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};
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#endif
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#endif // wxUSE_CONTROLS
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#endif // _WX_CTRLSUB_H_BASE_
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