src/cocoa/listbox.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/cocoa/listbox.mm
   3 // Purpose:     wxListBox
   4 // Author:      David Elliott
   5 // Modified by:
   6 // Created:     2003/03/18
   7 // Id:          $Id$
   8 // Copyright:   (c) 2003 David Elliott
   9 // Licence:     wxWidgets licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_LISTBOX
  15
  16 #include "wx/listbox.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/log.h"
  20     #include "wx/app.h"
  21 #endif //WX_PRECOMP
  22
  23 #include "wx/cocoa/string.h"
  24 #include "wx/cocoa/autorelease.h"
  25 #include "wx/cocoa/ObjcRef.h"
  26 #include "wx/cocoa/private/scrollview.h"
  27 #include "wx/cocoa/NSTableDataSource.h"
  28
  29 #import <Foundation/NSArray.h>
  30 #import <Foundation/NSEnumerator.h>
  31 #import <AppKit/NSTableView.h>
  32 #import <AppKit/NSTableColumn.h>
  33 #import <AppKit/NSScrollView.h>
  34
  35 IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControlWithItems)
  36 BEGIN_EVENT_TABLE(wxListBox, wxListBoxBase)
  37 END_EVENT_TABLE()
  38 WX_IMPLEMENT_COCOA_OWNER(wxListBox,NSTableView,NSControl,NSView)
  39
  40 bool wxListBox::Create(wxWindow *parent, wxWindowID winid,
  41             const wxPoint& pos,
  42             const wxSize& size,
  43             const wxArrayString& choices,
  44             long style,
  45             const wxValidator& validator,
  46             const wxString& name)
  47 {
  48     wxCArrayString chs(choices);
  49
  50     return Create(parent, winid, pos, size, chs.GetCount(), chs.GetStrings(),
  51                   style, validator, name);
  52 }
  53
  54 bool wxListBox::Create(wxWindow *parent, wxWindowID winid,
  55             const wxPoint& pos,
  56             const wxSize& size,
  57             int n, const wxString choices[],
  58             long style,
  59             const wxValidator& validator,
  60             const wxString& name)
  61 {
  62 /*
  63 wxLB_SINGLE
  64 Single-selection list.
  65
  66 wxLB_MULTIPLE
  67 Multiple-selection list: the user can toggle multiple items on and off.
  68
  69 wxLB_EXTENDED
  70 Extended-selection list: the user can select multiple items using the SHIFT key and the mouse or special key combinations.
  71
  72 wxLB_HSCROLL
  73 Create horizontal scrollbar if contents are too wide (Windows only).
  74
  75 wxLB_ALWAYS_SB
  76 Always show a vertical scrollbar.
  77
  78 wxLB_NEEDED_SB
  79 Only create a vertical scrollbar if needed.
  80
  81 wxLB_SORT
  82 The listbox contents are sorted in alphabetical order.
  83 */
  84     wxAutoNSAutoreleasePool pool;
  85     if(!CreateControl(parent,winid,pos,size,style,validator,name))
  86         return false;
  87
  88     // Provide the data
  89     m_cocoaItems = wxGCSafeRetain([NSMutableArray arrayWithCapacity:n]);
  90     for(int i=0; i < n; i++)
  91     {
  92         [m_cocoaItems addObject: wxNSStringWithWxString(choices[i])];
  93     }
  94     // Remove everything
  95     m_itemClientData.Clear();
  96     // Initialize n elements to NULL
  97     m_itemClientData.SetCount(n,NULL);
  98
  99     SetNSTableView([[NSTableView alloc] initWithFrame: MakeDefaultNSRect(size)]);
 100     [m_cocoaNSView release];
 101     [GetNSTableView() setHeaderView: nil];
 102
 103     // Set up the data source
 104     m_cocoaDataSource = [[WX_GET_OBJC_CLASS(wxCocoaNSTableDataSource) alloc] init];
 105     [GetNSTableView() setDataSource:m_cocoaDataSource];
 106
 107     // Add the single column
 108     NSTableColumn *tableColumn = [[NSTableColumn alloc] initWithIdentifier:nil];
 109     [GetNSTableView() addTableColumn: tableColumn];
 110     [tableColumn release];
 111
 112     [GetNSTableView() sizeToFit];
 113     // Finish
 114     if(m_parent)
 115         m_parent->CocoaAddChild(this);
 116     // NSTableView does WEIRD things with sizes.  Wrapping it in an
 117     // NSScrollView seems to be the only reasonable solution.
 118     CocoaCreateNSScrollView();
 119     SetInitialFrameRect(pos,size);
 120
 121     // Force showing of a vertical scrollbar
 122     [m_wxCocoaScrollView->GetNSScrollView() setHasVerticalScroller:YES];
 123
 124     // Set up extended/multiple selection flags
 125     if ((style & wxLB_EXTENDED) || (style & wxLB_MULTIPLE))
 126         //diff is that mult requires shift down for multi selection
 127         [GetNSTableView() setAllowsMultipleSelection:true];
 128
 129     [GetNSTableView() setAllowsColumnSelection:false];
 130
 131     return true;
 132 }
 133
 134 wxListBox::~wxListBox()
 135 {
 136     [GetNSTableView() setDataSource: nil];
 137     [m_cocoaDataSource release];
 138     wxGCSafeRelease(m_cocoaItems);
 139     m_cocoaItems = nil;
 140     DisassociateNSTableView(GetNSTableView());
 141 }
 142
 143 int wxListBox::CocoaDataSource_numberOfRows()
 144 {
 145     return [m_cocoaItems count];
 146 }
 147
 148 struct objc_object* wxListBox::CocoaDataSource_objectForTableColumn(
 149         WX_NSTableColumn tableColumn, int rowIndex)
 150 {
 151     return [m_cocoaItems objectAtIndex:rowIndex];
 152 }
 153
 154 // pure virtuals from wxListBoxBase
 155 bool wxListBox::IsSelected(int n) const
 156 {
 157     return [GetNSTableView() isRowSelected: n];
 158 }
 159
 160 void wxListBox::DoSetSelection(int n, bool select)
 161 {
 162     if(select)
 163         [GetNSTableView() selectRow: n byExtendingSelection:NO];
 164     else
 165         [GetNSTableView() deselectRow: n];
 166 }
 167
 168 int wxListBox::GetSelections(wxArrayInt& aSelections) const
 169 {
 170     aSelections.Clear();
 171     NSEnumerator *enumerator = [GetNSTableView() selectedRowEnumerator];
 172     while(NSNumber *num = [enumerator nextObject])
 173     {
 174         aSelections.Add([num intValue]);
 175     }
 176     return [GetNSTableView() numberOfSelectedRows];
 177 }
 178
 179 int wxListBox::DoInsertItems(const wxArrayStringsAdapter & items, unsigned int pos, void **clientData, wxClientDataType type)
 180 {
 181     wxAutoNSAutoreleasePool pool;
 182
 183     const unsigned int numItems = items.GetCount();
 184     for ( unsigned int i = 0; i < numItems; ++i, ++pos )
 185     {
 186         [m_cocoaItems insertObject: wxNSStringWithWxString(items[i])
 187             atIndex: pos];
 188         m_itemClientData.Insert(NULL, pos);
 189         AssignNewItemClientData(pos, clientData, i, type);
 190     }
 191
 192     [GetNSTableView() reloadData];
 193     return pos - 1;
 194 }
 195
 196 void wxListBox::DoSetFirstItem(int n)
 197 {
 198     [m_cocoaItems exchangeObjectAtIndex:0 withObjectAtIndex:n];
 199     void* pOld = m_itemClientData[n];
 200     m_itemClientData[n] = m_itemClientData[0];
 201     m_itemClientData[0] = pOld;
 202     [GetNSTableView() reloadData];
 203 }
 204
 205
 206 // pure virtuals from wxItemContainer
 207     // deleting items
 208 void wxListBox::DoClear()
 209 {
 210     [m_cocoaItems removeAllObjects];
 211     m_itemClientData.Clear();
 212     [GetNSTableView() reloadData];
 213 }
 214
 215 void wxListBox::DoDeleteOneItem(unsigned int n)
 216 {
 217     [m_cocoaItems removeObjectAtIndex:n];
 218     m_itemClientData.RemoveAt(n);
 219     [GetNSTableView() reloadData];
 220 }
 221
 222     // accessing strings
 223 unsigned int wxListBox::GetCount() const
 224 {
 225     return (unsigned int)[m_cocoaItems count];
 226 }
 227
 228 wxString wxListBox::GetString(unsigned int n) const
 229 {
 230     return wxStringWithNSString([m_cocoaItems objectAtIndex:n]);
 231 }
 232
 233 void wxListBox::SetString(unsigned int n, const wxString& s)
 234 {
 235     wxAutoNSAutoreleasePool pool;
 236     [m_cocoaItems removeObjectAtIndex:n];
 237     [m_cocoaItems insertObject: wxNSStringWithWxString(s) atIndex: n];
 238     [GetNSTableView() reloadData];
 239 }
 240
 241 int wxListBox::FindString(const wxString& s, bool bCase) const
 242 {
 243     // FIXME: use wxItemContainerImmutable::FindString for bCase parameter
 244     wxAutoNSAutoreleasePool pool;
 245     return [m_cocoaItems indexOfObject:wxNSStringWithWxString(s)];
 246 }
 247
 248     // selection
 249 int wxListBox::GetSelection() const
 250 {
 251     return [GetNSTableView() selectedRow];
 252 }
 253
 254 void wxListBox::DoSetItemClientData(unsigned int n, void* clientData)
 255 {
 256     m_itemClientData[n] = clientData;
 257 }
 258
 259 void* wxListBox::DoGetItemClientData(unsigned int n) const
 260 {
 261     return m_itemClientData[n];
 262 }
 263
 264 #endif // wxUSE_LISTBOX