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