3f66f6a5b3
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383 lines
11 KiB
C++
383 lines
11 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/os2/choice.cpp
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// Purpose: wxChoice
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// Author: David Webster
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// Modified by:
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// Created: 10/13/99
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// Copyright: (c) David Webster
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#if wxUSE_CHOICE
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#include "wx/choice.h"
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#ifndef WX_PRECOMP
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#include "wx/utils.h"
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#include "wx/log.h"
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#include "wx/settings.h"
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#endif
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#include "wx/os2/private.h"
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bool wxChoice::Create(
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wxWindow* pParent
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, wxWindowID vId
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, const wxPoint& rPos
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, const wxSize& rSize
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, const wxArrayString& asChoices
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, long lStyle
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, const wxValidator& rValidator
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, const wxString& rsName
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)
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{
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wxCArrayString chs(asChoices);
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return Create(pParent, vId, rPos, rSize, chs.GetCount(), chs.GetStrings(),
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lStyle, rValidator, rsName);
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}
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bool wxChoice::Create(
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wxWindow* pParent
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, wxWindowID vId
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, const wxPoint& rPos
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, const wxSize& rSize
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, int n
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, const wxString asChoices[]
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, long lStyle
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, const wxValidator& rValidator
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, const wxString& rsName
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)
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{
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long lSstyle;
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if (!CreateControl( pParent
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,vId
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,rPos
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,rSize
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,lStyle
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,rValidator
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,rsName
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))
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return false;
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lSstyle = CBS_DROPDOWNLIST |
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WS_TABSTOP |
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WS_VISIBLE;
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// clipping siblings does not yet work
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// if (lStyle & wxCLIP_SIBLINGS )
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// lSstyle |= WS_CLIPSIBLINGS;
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wxASSERT_MSG( !(lStyle & wxCB_DROPDOWN) &&
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!(lStyle & wxCB_READONLY) &&
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!(lStyle & wxCB_SIMPLE),
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wxT("this style flag is ignored by wxChoice, you "
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"probably want to use a wxComboBox") );
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if (!OS2CreateControl( wxT("COMBOBOX")
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,lSstyle
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))
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return false;
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//
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// A choice/combobox normally has a white background (or other, depending
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// on global settings) rather than inheriting the parent's background colour.
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//
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SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
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// initialize the controls contents
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for (int i = 0; i < n; i++)
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{
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Append(asChoices[i]);
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}
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SetSize( rPos.x
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,rPos.y
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,rSize.x
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,rSize.y
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);
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// Set height to use with sizers i.e. without the dropdown listbox
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wxFont vFont = GetFont();
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int nEditHeight;
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wxGetCharSize( GetHWND(), NULL, &nEditHeight, &vFont );
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nEditHeight = EDIT_HEIGHT_FROM_CHAR_HEIGHT(nEditHeight);
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SetInitialSize(wxSize(-1,nEditHeight+4)); // +2x2 for the border
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return true;
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} // end of wxChoice::Create
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wxChoice::~wxChoice()
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{
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Clear();
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}
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// ----------------------------------------------------------------------------
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// adding/deleting items to/from the list
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// ----------------------------------------------------------------------------
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int wxChoice::DoInsertItems(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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{
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int nIndex = wxNOT_FOUND;
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LONG nIndexType = 0;
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bool incrementPos = false;
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if ( IsSorted() )
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nIndexType = LIT_SORTASCENDING;
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else if (pos == GetCount())
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nIndexType = LIT_END;
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else
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{
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nIndexType = pos;
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incrementPos = true;
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}
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const unsigned int count = items.GetCount();
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for( unsigned int i = 0; i < count; ++i )
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{
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nIndex = (int)::WinSendMsg( GetHwnd()
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,LM_INSERTITEM
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,(MPARAM)nIndexType
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,(MPARAM)items[i].wx_str()
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);
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if (nIndex < 0)
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{
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nIndex = wxNOT_FOUND;
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break;
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}
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AssignNewItemClientData(nIndex, clientData, i, type);
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if (incrementPos)
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++nIndexType;
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}
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return nIndex;
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} // end of wxChoice::DoInsertAppendItemsWithData
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void wxChoice::DoDeleteOneItem(unsigned int n)
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{
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wxCHECK_RET( IsValid(n), wxT("invalid item index in wxChoice::Delete") );
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::WinSendMsg(GetHwnd(), LM_DELETEITEM, (MPARAM)n, (MPARAM)0);
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} // end of wxChoice::Delete
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void wxChoice::DoClear()
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{
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::WinSendMsg(GetHwnd(), LM_DELETEALL, (MPARAM)0, (MPARAM)0);
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} // end of wxChoice::Clear
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// ----------------------------------------------------------------------------
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// selection
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// ----------------------------------------------------------------------------
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int wxChoice::GetSelection() const
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{
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return((int)LONGFROMMR(::WinSendMsg(GetHwnd(), LM_QUERYSELECTION, (MPARAM)LIT_FIRST, (MPARAM)0)));
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} // end of wxChoice::GetSelection
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void wxChoice::SetSelection(
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int n
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)
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{
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::WinSendMsg( GetHwnd()
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,LM_SELECTITEM
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,(MPARAM)n
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,(MPARAM)TRUE
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);
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} // end of wxChoice::SetSelection
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// ----------------------------------------------------------------------------
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// string list functions
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// ----------------------------------------------------------------------------
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unsigned int wxChoice::GetCount() const
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{
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return((unsigned int)LONGFROMMR(::WinSendMsg(GetHwnd(), LM_QUERYITEMCOUNT, (MPARAM)0, (MPARAM)0)));
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} // end of wxChoice::GetCount
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void wxChoice::SetString(unsigned int n, const wxString& rsStr)
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{
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LONG nIndexType = 0;
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void* pData;
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if ( HasClientData() )
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{
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pData = DoGetItemClientData(n);
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}
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else // no client data
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{
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pData = NULL;
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}
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::WinSendMsg(GetHwnd(), LM_DELETEITEM, (MPARAM)n, 0);
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if (m_windowStyle & wxCB_SORT)
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nIndexType = LIT_SORTASCENDING;
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else
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nIndexType = LIT_END;
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::WinSendMsg( GetHwnd()
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,LM_INSERTITEM
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,(MPARAM)nIndexType
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,(MPARAM)rsStr.wx_str()
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);
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if (pData)
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{
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DoSetItemClientData(n, pData);
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}
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} // end of wxChoice::SetString
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wxString wxChoice::GetString(unsigned int n) const
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{
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int nLen = 0;
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wxString sStr = wxEmptyString;
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wxChar* zBuf;
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nLen = (size_t)LONGFROMMR(::WinSendMsg(GetHwnd(), LM_QUERYITEMTEXTLENGTH, (MPARAM)n, (MPARAM)0));
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if (nLen != LIT_ERROR && nLen > 0)
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{
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zBuf = new wxChar[++nLen];
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::WinSendMsg( GetHwnd()
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,LM_QUERYITEMTEXT
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,MPFROM2SHORT((SHORT)n, (SHORT)nLen)
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,(MPARAM)zBuf
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);
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sStr = zBuf;
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delete [] zBuf;
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}
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return sStr;
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} // end of wxChoice::GetString
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// ----------------------------------------------------------------------------
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// client data
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// ----------------------------------------------------------------------------
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void wxChoice::DoSetItemClientData(unsigned int n, void* pClientData)
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{
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::WinSendMsg(GetHwnd(), LM_SETITEMHANDLE, (MPARAM)n, MPFROMP(pClientData));
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} // end of wxChoice::DoSetItemClientData
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void* wxChoice::DoGetItemClientData(unsigned int n) const
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{
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MRESULT rc = ::WinSendMsg(GetHwnd(), LM_QUERYITEMHANDLE, (MPARAM)n, (MPARAM)0);
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return((void*)rc);
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} // end of wxChoice::DoGetItemClientData
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// ----------------------------------------------------------------------------
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// wxOS2 specific helpers
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// ----------------------------------------------------------------------------
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void wxChoice::DoSetSize(int nX,
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int nY,
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int nWidth,
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int WXUNUSED(nHeight),
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int nSizeFlags)
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{
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//
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// Ignore height parameter because height doesn't mean 'initially
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// displayed' height, it refers to the drop-down menu as well. The
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// wxWidgets interpretation is different; also, getting the size returns
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// the _displayed_ size (NOT the drop down menu size) so
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// setting-getting-setting size would not work.
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//
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wxControl::DoSetSize( nX
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,nY
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,nWidth
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,wxDefaultCoord
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,nSizeFlags
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);
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} // end of wxChoice::DoSetSize
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wxSize wxChoice::DoGetBestSize() const
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{
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//
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// Find the widest string
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//
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int nLineWidth;
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int nChoiceWidth = 0;
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int nCx;
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int nCy;
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wxFont vFont = (wxFont)GetFont();
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const unsigned int nItems = GetCount();
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for (unsigned int i = 0; i < nItems; i++)
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{
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wxString sStr(GetString(i));
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GetTextExtent( sStr, &nLineWidth, NULL );
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if (nLineWidth > nChoiceWidth)
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nChoiceWidth = nLineWidth;
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}
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//
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// Give it some reasonable default value if there are no strings in the
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// list
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//
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if (nChoiceWidth == 0L)
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nChoiceWidth = 100L;
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//
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// The combobox should be larger than the widest string
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//
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wxGetCharSize( GetHWND(), &nCx, &nCy, &vFont );
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nChoiceWidth += 5 * nCx;
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//
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// Choice drop-down list depends on number of items (limited to 10)
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//
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size_t nStrings = nItems == 0 ? 10 : wxMin(10, nItems) + 1;
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int nChoiceHeight = EDIT_HEIGHT_FROM_CHAR_HEIGHT(nCy) * nStrings;
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return wxSize(nChoiceWidth, nChoiceHeight);
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} // end of wxChoice::DoGetBestSize
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MRESULT wxChoice::OS2WindowProc(
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WXUINT uMsg
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, WXWPARAM wParam
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, WXLPARAM lParam
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)
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{
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return wxWindow::OS2WindowProc( uMsg
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,wParam
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,lParam
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);
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} // end of wxChoice::OS2WindowProc
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bool wxChoice::OS2Command(
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WXUINT uParam
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, WXWORD WXUNUSED(wId)
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)
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{
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if (uParam != LN_SELECT)
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{
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//
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// "selection changed" is the only event we're after
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//
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return false;
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}
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int n = GetSelection();
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if (n > -1)
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{
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wxCommandEvent vEvent( wxEVT_CHOICE
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,m_windowId
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);
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vEvent.SetInt(n);
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vEvent.SetEventObject(this);
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vEvent.SetString(GetStringSelection());
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if (HasClientObjectData())
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vEvent.SetClientObject(GetClientObject(n));
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else if (HasClientUntypedData())
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vEvent.SetClientData(GetClientData(n));
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ProcessCommand(vEvent);
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}
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return true;
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} // end of wxChoice::OS2Command
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#endif // wxUSE_CHOICE
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