src/osx/cocoa/listbox.mm

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/cocoa/listbox.mm
   3 // Purpose:     wxListBox
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id: listbox.cpp 54820 2008-07-29 20:04:11Z SC $
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_LISTBOX
  15
  16 #include "wx/listbox.h"
  17 #include "wx/dnd.h"
  18
  19 #ifndef WX_PRECOMP
  20     #include "wx/log.h"
  21     #include "wx/intl.h"
  22     #include "wx/utils.h"
  23     #include "wx/settings.h"
  24     #include "wx/arrstr.h"
  25     #include "wx/dcclient.h"
  26 #endif
  27
  28 #include "wx/osx/private.h"
  29
  30 #include <vector>
  31
  32 // forward decls
  33
  34 class wxListWidgetCocoaImpl;
  35
  36 @interface wxNSTableDataSource : NSObject
  37 {
  38     wxListWidgetCocoaImpl* impl;
  39 }
  40
  41 - (id)tableView:(NSTableView *)aTableView
  42         objectValueForTableColumn:(NSTableColumn *)aTableColumn
  43         row:(NSInteger)rowIndex;
  44
  45 - (void)tableView:(NSTableView *)aTableView
  46         setObjectValue:(id)value forTableColumn:(NSTableColumn *)aTableColumn
  47         row:(NSInteger)rowIndex;
  48
  49 - (NSInteger)numberOfRowsInTableView:(NSTableView *)aTableView;
  50
  51 - (void)setImplementation: (wxListWidgetCocoaImpl *) theImplementation;
  52 - (wxListWidgetCocoaImpl*) implementation;
  53
  54 @end
  55
  56 @interface wxNSTableView : NSTableView
  57 {
  58 }
  59
  60 @end
  61
  62 //
  63 // table column
  64 //
  65
  66 class wxCocoaTableColumn;
  67
  68 @interface wxNSTableColumn : NSTableColumn
  69 {
  70     wxCocoaTableColumn* column;
  71 }
  72
  73 - (void) setColumn: (wxCocoaTableColumn*) col;
  74
  75 - (wxCocoaTableColumn*) column;
  76
  77 @end
  78
  79 class WXDLLIMPEXP_CORE wxCocoaTableColumn : public wxListWidgetColumn
  80 {
  81 public :
  82     wxCocoaTableColumn( wxNSTableColumn* column, bool editable )
  83         : m_column( column ), m_editable(editable)
  84     {
  85     }
  86
  87     ~wxCocoaTableColumn()
  88     {
  89     }
  90
  91     wxNSTableColumn* GetNSTableColumn() const { return m_column ; }
  92
  93     bool IsEditable() const { return m_editable; }
  94
  95 protected :
  96     wxNSTableColumn* m_column;
  97     bool m_editable;
  98 } ;
  99
 100 NSString* column1 = @"1";
 101
 102 class wxListWidgetCocoaImpl : public wxWidgetCocoaImpl, public wxListWidgetImpl
 103 {
 104 public :
 105     wxListWidgetCocoaImpl( wxWindowMac* peer, NSScrollView* view, wxNSTableView* tableview, wxNSTableDataSource* data );
 106
 107     ~wxListWidgetCocoaImpl();
 108
 109     virtual wxListWidgetColumn*     InsertTextColumn( unsigned pos, const wxString& title, bool editable = false,
 110                                 wxAlignment just = wxALIGN_LEFT , int defaultWidth = -1)  ;
 111     virtual wxListWidgetColumn*     InsertCheckColumn( unsigned pos , const wxString& title, bool editable = false,
 112                                 wxAlignment just = wxALIGN_LEFT , int defaultWidth =  -1)  ;
 113
 114     // add and remove
 115
 116     virtual void            ListDelete( unsigned int n ) ;
 117     virtual void            ListInsert( unsigned int n ) ;
 118     virtual void            ListClear() ;
 119
 120     // selecting
 121
 122     virtual void            ListDeselectAll();
 123
 124     virtual void            ListSetSelection( unsigned int n, bool select, bool multi ) ;
 125     virtual int             ListGetSelection() const ;
 126
 127     virtual int             ListGetSelections( wxArrayInt& aSelections ) const ;
 128
 129     virtual bool            ListIsSelected( unsigned int n ) const ;
 130
 131     // display
 132
 133     virtual void            ListScrollTo( unsigned int n ) ;
 134
 135     // accessing content
 136
 137     virtual unsigned int    ListGetCount() const ;
 138
 139     int                     ListGetColumnType( int col )
 140     {
 141         return col;
 142     }
 143     virtual void            UpdateLine( unsigned int n, wxListWidgetColumn* col = NULL ) ;
 144     virtual void            UpdateLineToEnd( unsigned int n);
 145
 146     virtual void            controlAction(WXWidget slf, void* _cmd, void *sender);
 147     virtual void            controlDoubleAction(void* _cmd);
 148 protected :
 149     wxNSTableView*          m_tableView ;
 150
 151     wxNSTableDataSource*    m_dataSource;
 152 } ;
 153
 154 //
 155 // implementations
 156 //
 157
 158 @implementation wxNSTableColumn
 159
 160 - (id) init
 161 {
 162     [super init];
 163     column = nil;
 164     return self;
 165 }
 166
 167 - (void) setColumn: (wxCocoaTableColumn*) col
 168 {
 169     column = col;
 170 }
 171
 172 - (wxCocoaTableColumn*) column
 173 {
 174     return column;
 175 }
 176
 177 @end
 178
 179 class wxNSTableViewCellValue : public wxListWidgetCellValue
 180 {
 181 public :
 182     wxNSTableViewCellValue( id &v ) : value(v)
 183     {
 184     }
 185
 186     virtual ~wxNSTableViewCellValue() {}
 187
 188     virtual void Set( CFStringRef v )
 189     {
 190         value = [[(NSString*)v retain] autorelease];
 191     }
 192     virtual void Set( const wxString& value )
 193     {
 194         Set( (CFStringRef) wxCFStringRef( value ) );
 195     }
 196     virtual void Set( int v )
 197     {
 198         value = [NSNumber numberWithInt:v];
 199     }
 200
 201     virtual int GetIntValue() const
 202     {
 203         if ( [value isKindOfClass:[NSNumber class]] )
 204             return [ (NSNumber*) value intValue ];
 205
 206         return 0;
 207     }
 208
 209     virtual wxString GetStringValue() const
 210     {
 211         if ( [value isKindOfClass:[NSString class]] )
 212             return wxCFStringRef( (CFStringRef) [value retain] ).AsString();
 213
 214         return wxEmptyString;
 215     }
 216
 217 protected:
 218     id& value;
 219 } ;
 220
 221 @implementation wxNSTableDataSource
 222
 223 - (id) init
 224 {
 225     [super init];
 226     impl = nil;
 227     return self;
 228 }
 229
 230 - (void)setImplementation: (wxListWidgetCocoaImpl *) theImplementation
 231 {
 232     impl = theImplementation;
 233 }
 234
 235 - (wxListWidgetCocoaImpl*) implementation
 236 {
 237     return impl;
 238 }
 239
 240 - (NSInteger)numberOfRowsInTableView:(NSTableView *)aTableView
 241 {
 242     if ( impl )
 243         return impl->ListGetCount();
 244     return 0;
 245 }
 246
 247 - (id)tableView:(NSTableView *)aTableView
 248         objectValueForTableColumn:(NSTableColumn *)aTableColumn
 249         row:(NSInteger)rowIndex
 250 {
 251     wxNSTableColumn* tablecol = (wxNSTableColumn *)aTableColumn;
 252     wxListBox* lb = dynamic_cast<wxListBox*>(impl->GetWXPeer());
 253     wxCocoaTableColumn* col = [tablecol column];
 254     id value = nil;
 255     wxNSTableViewCellValue cellvalue(value);
 256     lb->GetValueCallback(rowIndex, col, cellvalue);
 257     return value;
 258 }
 259
 260 - (void)tableView:(NSTableView *)aTableView
 261         setObjectValue:(id)value forTableColumn:(NSTableColumn *)aTableColumn
 262         row:(NSInteger)rowIndex
 263 {
 264     wxNSTableColumn* tablecol = (wxNSTableColumn *)aTableColumn;
 265     wxListBox* lb = dynamic_cast<wxListBox*>(impl->GetWXPeer());
 266     wxCocoaTableColumn* col = [tablecol column];
 267     wxNSTableViewCellValue cellvalue(value);
 268     lb->SetValueCallback(rowIndex, col, cellvalue);
 269 }
 270
 271 @end
 272
 273 @implementation wxNSTableView
 274
 275 + (void)initialize
 276 {
 277     static BOOL initialized = NO;
 278     if (!initialized)
 279     {
 280         initialized = YES;
 281         wxOSXCocoaClassAddWXMethods( self );
 282     }
 283 }
 284
 285 @end
 286
 287 //
 288 //
 289 //
 290
 291 wxListWidgetCocoaImpl::wxListWidgetCocoaImpl( wxWindowMac* peer, NSScrollView* view, wxNSTableView* tableview, wxNSTableDataSource* data ) :
 292     wxWidgetCocoaImpl( peer, view ), m_tableView(tableview), m_dataSource(data)
 293 {
 294     InstallEventHandler( tableview );
 295 }
 296
 297 wxListWidgetCocoaImpl::~wxListWidgetCocoaImpl()
 298 {
 299     [m_dataSource release];
 300 }
 301
 302 unsigned int wxListWidgetCocoaImpl::ListGetCount() const
 303 {
 304     wxListBox* lb = dynamic_cast<wxListBox*> ( GetWXPeer() );
 305     return lb->GetCount();
 306 }
 307
 308 //
 309 // columns
 310 //
 311
 312 wxListWidgetColumn* wxListWidgetCocoaImpl::InsertTextColumn( unsigned pos, const wxString& title, bool editable,
 313                                 wxAlignment just, int defaultWidth)
 314 {
 315     wxNSTableColumn* col1 = [[wxNSTableColumn alloc] init];
 316     [col1 setEditable:editable];
 317
 318     unsigned formerColCount = [m_tableView numberOfColumns];
 319
 320     // there's apparently no way to insert at a specific position
 321     [m_tableView addTableColumn:col1 ];
 322     if ( pos < formerColCount )
 323         [m_tableView moveColumn:formerColCount toColumn:pos];
 324
 325     if ( defaultWidth >= 0 )
 326     {
 327         [col1 setMaxWidth:defaultWidth];
 328         [col1 setMinWidth:defaultWidth];
 329         [col1 setWidth:defaultWidth];
 330     }
 331     else
 332     {
 333         [col1 setMaxWidth:1000];
 334         [col1 setMinWidth:10];
 335         // temporary hack, because I cannot get the automatic column resizing
 336         // to work properly
 337         [col1 setWidth:1000];
 338     }
 339     [col1 setResizingMask: NSTableColumnAutoresizingMask];
 340     wxCocoaTableColumn* wxcol = new wxCocoaTableColumn( col1, editable );
 341     [col1 setColumn:wxcol];
 342
 343     // owned by the tableview
 344     [col1 release];
 345     return wxcol;
 346 }
 347
 348 wxListWidgetColumn* wxListWidgetCocoaImpl::InsertCheckColumn( unsigned pos , const wxString& title, bool editable,
 349                                 wxAlignment just, int defaultWidth )
 350 {
 351    wxNSTableColumn* col1 = [[wxNSTableColumn alloc] init];
 352     [col1 setEditable:editable];
 353
 354     // set your custom cell & set it up
 355     NSButtonCell* checkbox = [[NSButtonCell alloc] init];
 356     [checkbox setTitle:@""];
 357     [checkbox setButtonType:NSSwitchButton];
 358     [col1 setDataCell:checkbox] ;
 359     [checkbox release];
 360
 361     unsigned formerColCount = [m_tableView numberOfColumns];
 362
 363     // there's apparently no way to insert at a specific position
 364     [m_tableView addTableColumn:col1 ];
 365     if ( pos < formerColCount )
 366         [m_tableView moveColumn:formerColCount toColumn:pos];
 367
 368     if ( defaultWidth >= 0 )
 369     {
 370         [col1 setMaxWidth:defaultWidth];
 371         [col1 setMinWidth:defaultWidth];
 372         [col1 setWidth:defaultWidth];
 373     }
 374
 375     [col1 setResizingMask: NSTableColumnNoResizing];
 376     wxCocoaTableColumn* wxcol = new wxCocoaTableColumn( col1, editable );
 377     [col1 setColumn:wxcol];
 378
 379     // owned by the tableview
 380     [col1 release];
 381     return wxcol;
 382 }
 383
 384
 385 //
 386 // inserting / removing lines
 387 //
 388
 389 void wxListWidgetCocoaImpl::ListInsert( unsigned int n )
 390 {
 391 #if 0
 392     {
 393         wxListBoxCocoaLine* line = new wxListBoxCocoaLine();
 394         line->SetLabel(items[i]);
 395         if ( m_items.size() <= n+i )
 396             m_items.push_back( line );
 397         else
 398             m_items.insert(m_items.begin()+n, line);
 399 /*
 400         NSMutableDictionary* line = [[NSMutableDictionary alloc] init];
 401         [line setObject:wxCFStringRef(items[i]).AsNSString() forKey:column1];
 402         NSMutableArray* array = [m_dataSource items];
 403         if ( [array count] <= n+i )
 404             [array addObject:line];
 405         else
 406             [array insertObject:line atIndex:n];
 407 */
 408     }
 409 #endif
 410     [m_tableView reloadData];
 411 }
 412
 413 void wxListWidgetCocoaImpl::ListDelete( unsigned int n )
 414 {
 415     [m_tableView reloadData];
 416 }
 417
 418 void wxListWidgetCocoaImpl::ListClear()
 419 {
 420     [m_tableView reloadData];
 421 }
 422
 423 // selecting
 424
 425 void wxListWidgetCocoaImpl::ListDeselectAll()
 426 {
 427     [m_tableView deselectAll:nil];
 428 }
 429
 430 void wxListWidgetCocoaImpl::ListSetSelection( unsigned int n, bool select, bool multi )
 431 {
 432     // TODO
 433     if ( select )
 434         [m_tableView selectRow: n byExtendingSelection:multi];
 435     else
 436         [m_tableView deselectRow: n];
 437
 438 }
 439
 440 int wxListWidgetCocoaImpl::ListGetSelection() const
 441 {
 442     return [m_tableView selectedRow];
 443 }
 444
 445 int wxListWidgetCocoaImpl::ListGetSelections( wxArrayInt& aSelections ) const
 446 {
 447     aSelections.Empty();
 448
 449     int count = ListGetCount();
 450
 451     for ( int i = 0; i < count; ++i)
 452     {
 453         if ([m_tableView isRowSelected:count])
 454         aSelections.Add(i);
 455     }
 456
 457     return aSelections.Count();
 458 }
 459
 460 bool wxListWidgetCocoaImpl::ListIsSelected( unsigned int n ) const
 461 {
 462     return [m_tableView isRowSelected:n];
 463 }
 464
 465 // display
 466
 467 void wxListWidgetCocoaImpl::ListScrollTo( unsigned int n )
 468 {
 469     [m_tableView scrollRowToVisible:n];
 470 }
 471
 472
 473 void wxListWidgetCocoaImpl::UpdateLine( unsigned int n, wxListWidgetColumn* col )
 474 {
 475     // TODO optimize
 476     [m_tableView reloadData];
 477 }
 478
 479 void wxListWidgetCocoaImpl::UpdateLineToEnd( unsigned int n)
 480 {
 481     // TODO optimize
 482     [m_tableView reloadData];
 483 }
 484
 485 void wxListWidgetCocoaImpl::controlAction(WXWidget slf,void* _cmd, void *sender)
 486 {
 487     wxListBox *list = static_cast<wxListBox*> ( GetWXPeer());
 488     wxCHECK_RET( list != NULL , wxT("Listbox expected"));
 489
 490     wxCommandEvent event( wxEVT_COMMAND_LISTBOX_SELECTED, list->GetId() );
 491
 492     int sel = [m_tableView clickedRow];
 493     if ((sel < 0) || (sel > (int) list->GetCount()))  // OS X can select an item below the last item (why?)
 494        return;
 495
 496     list->HandleLineEvent( sel, false );
 497 }
 498
 499 void wxListWidgetCocoaImpl::controlDoubleAction(void* _cmd)
 500 {
 501     wxListBox *list = static_cast<wxListBox*> ( GetWXPeer());
 502     wxCHECK_RET( list != NULL , wxT("Listbox expected"));
 503
 504     int sel = [m_tableView clickedRow];
 505     if ((sel < 0) || (sel > (int) list->GetCount()))  // OS X can select an item below the last item (why?)
 506        return;
 507
 508     list->HandleLineEvent( sel, true );
 509 }
 510
 511 // accessing content
 512
 513
 514 wxWidgetImplType* wxWidgetImpl::CreateListBox( wxWindowMac* wxpeer,
 515                                     wxWindowMac* parent,
 516                                     wxWindowID id,
 517                                     const wxPoint& pos,
 518                                     const wxSize& size,
 519                                     long style,
 520                                     long extraStyle)
 521 {
 522     NSRect r = wxOSXGetFrameForControl( wxpeer, pos , size ) ;
 523     NSScrollView* scrollview = [[NSScrollView alloc] initWithFrame:r];
 524
 525     // use same scroll flags logic as msw
 526
 527     [scrollview setHasVerticalScroller:YES];
 528
 529     if ( style & wxLB_HSCROLL )
 530         [scrollview setHasHorizontalScroller:YES];
 531
 532     [scrollview setAutohidesScrollers: ((style & wxLB_ALWAYS_SB) ? NO : YES)];
 533
 534     // setting up the true table
 535
 536     wxNSTableView* tableview = [[wxNSTableView alloc] init];
 537     // only one multi-select mode available
 538     if ( (style & wxLB_EXTENDED) || (style & wxLB_MULTIPLE) )
 539         [tableview setAllowsMultipleSelection:YES];
 540
 541     // simple listboxes have no header row
 542     [tableview setHeaderView:nil];
 543
 544     if ( style & wxLB_HSCROLL )
 545         [tableview setColumnAutoresizingStyle:NSTableViewNoColumnAutoresizing];
 546     else
 547         [tableview setColumnAutoresizingStyle:NSTableViewLastColumnOnlyAutoresizingStyle];
 548
 549     wxNSTableDataSource* ds = [[ wxNSTableDataSource alloc] init];
 550     [tableview setDataSource:ds];
 551     [scrollview setDocumentView:tableview];
 552     [tableview release];
 553
 554     wxListWidgetCocoaImpl* c = new wxListWidgetCocoaImpl( wxpeer, scrollview, tableview, ds );
 555
 556     // temporary hook for dnd
 557     [tableview registerForDraggedTypes:[NSArray arrayWithObjects:
 558         NSStringPboardType, NSFilenamesPboardType, NSTIFFPboardType, NSPICTPboardType, NSPDFPboardType, nil]];
 559
 560     [ds setImplementation:c];
 561     return c;
 562 }
 563
 564 int wxListBox::DoListHitTest(const wxPoint& inpoint) const
 565 {
 566 #if wxOSX_USE_CARBON
 567     OSStatus err;
 568
 569     // There are few reasons why this is complicated:
 570     // 1) There is no native HitTest function for Mac
 571     // 2) GetDataBrowserItemPartBounds only works on visible items
 572     // 3) We can't do it through GetDataBrowserTableView[Item]RowHeight
 573     //    because what it returns is basically inaccurate in the context
 574     //    of the coordinates we want here, but we use this as a guess
 575     //    for where the first visible item lies
 576
 577     wxPoint point = inpoint;
 578
 579     // get column property ID (req. for call to itempartbounds)
 580     DataBrowserTableViewColumnID colId = 0;
 581     err = GetDataBrowserTableViewColumnProperty(m_peer->GetControlRef(), 0, &colId);
 582     wxCHECK_MSG(err == noErr, wxNOT_FOUND, wxT("Unexpected error from GetDataBrowserTableViewColumnProperty"));
 583
 584     // OK, first we need to find the first visible item we have -
 585     // this will be the "low" for our binary search. There is no real
 586     // easy way around this, as we will need to do a SLOW linear search
 587     // until we find a visible item, but we can do a cheap calculation
 588     // via the row height to speed things up a bit
 589     UInt32 scrollx, scrolly;
 590     err = GetDataBrowserScrollPosition(m_peer->GetControlRef(), &scrollx, &scrolly);
 591     wxCHECK_MSG(err == noErr, wxNOT_FOUND, wxT("Unexpected error from GetDataBrowserScrollPosition"));
 592
 593     UInt16 height;
 594     err = GetDataBrowserTableViewRowHeight(m_peer->GetControlRef(), &height);
 595     wxCHECK_MSG(err == noErr, wxNOT_FOUND, wxT("Unexpected error from GetDataBrowserTableViewRowHeight"));
 596
 597     // these indices are 0-based, as usual, so we need to add 1 to them when
 598     // passing them to data browser functions which use 1-based indices
 599     int low = scrolly / height,
 600         high = GetCount() - 1;
 601
 602     // search for the first visible item (note that the scroll guess above
 603     // is the low bounds of where the item might lie so we only use that as a
 604     // starting point - we should reach it within 1 or 2 iterations of the loop)
 605     while ( low <= high )
 606     {
 607         Rect bounds;
 608         err = GetDataBrowserItemPartBounds(
 609             m_peer->GetControlRef(), low + 1, colId,
 610             kDataBrowserPropertyEnclosingPart,
 611             &bounds); // note +1 to translate to Mac ID
 612         if ( err == noErr )
 613             break;
 614
 615         // errDataBrowserItemNotFound is expected as it simply means that the
 616         // item is not currently visible -- but other errors are not
 617         wxCHECK_MSG( err == errDataBrowserItemNotFound, wxNOT_FOUND,
 618                      wxT("Unexpected error from GetDataBrowserItemPartBounds") );
 619
 620         low++;
 621     }
 622
 623     // NOW do a binary search for where the item lies, searching low again if
 624     // we hit an item that isn't visible
 625     while ( low <= high )
 626     {
 627         int mid = (low + high) / 2;
 628
 629         Rect bounds;
 630         err = GetDataBrowserItemPartBounds(
 631             m_peer->GetControlRef(), mid + 1, colId,
 632             kDataBrowserPropertyEnclosingPart,
 633             &bounds); //note +1 to trans to mac id
 634         wxCHECK_MSG( err == noErr || err == errDataBrowserItemNotFound,
 635                      wxNOT_FOUND,
 636                      wxT("Unexpected error from GetDataBrowserItemPartBounds") );
 637
 638         if ( err == errDataBrowserItemNotFound )
 639         {
 640             // item not visible, attempt to find a visible one
 641             // search lower
 642             high = mid - 1;
 643         }
 644         else // visible item, do actual hitttest
 645         {
 646             // if point is within the bounds, return this item (since we assume
 647             // all x coords of items are equal we only test the x coord in
 648             // equality)
 649             if ((point.x >= bounds.left && point.x <= bounds.right) &&
 650                 (point.y >= bounds.top && point.y <= bounds.bottom) )
 651             {
 652                 // found!
 653                 return mid;
 654             }
 655
 656             if ( point.y < bounds.top )
 657                 // index(bounds) greater then key(point)
 658                 high = mid - 1;
 659             else
 660                 // index(bounds) less then key(point)
 661                 low = mid + 1;
 662         }
 663     }
 664 #endif
 665     return wxNOT_FOUND;
 666 }
 667
 668 #endif // wxUSE_LISTBOX