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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: 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/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 #import <AppKit/NSCell.h>
35
36
37 // ============================================================================
38 // helper functions
39 // ============================================================================
40
41 static CGFloat _TableColumnMaxWidthForItems(NSTableColumn *tableColumn, NSArray *items)
42 {
43 wxAutoNSAutoreleasePool pool;
44
45 NSCell *dataCell = [[[tableColumn dataCell] copy] autorelease];
46 CGFloat width = 0.0f;
47 NSEnumerator *itemEnum = [items objectEnumerator];
48 NSString *item;
49 while( (item = [itemEnum nextObject]) != nil )
50 {
51 [dataCell setStringValue: item];
52 NSSize itemSize = [dataCell cellSize];
53 CGFloat itemWidth = itemSize.width;
54 if(itemWidth > width)
55 width = itemWidth;
56 }
57 return width;
58 }
59
60 static void _SetWidthOfTableColumnToFitItems(NSTableColumn *tableColumn, NSArray *items)
61 {
62 CGFloat width = _TableColumnMaxWidthForItems(tableColumn, items);
63 [tableColumn setWidth:width];
64 [tableColumn setMinWidth:width];
65 }
66
67 // ============================================================================
68 // class wxListBox
69 // ============================================================================
70
71 BEGIN_EVENT_TABLE(wxListBox, wxListBoxBase)
72 END_EVENT_TABLE()
73 WX_IMPLEMENT_COCOA_OWNER(wxListBox,NSTableView,NSControl,NSView)
74
75 bool wxListBox::Create(wxWindow *parent, wxWindowID winid,
76 const wxPoint& pos,
77 const wxSize& size,
78 const wxArrayString& choices,
79 long style,
80 const wxValidator& validator,
81 const wxString& name)
82 {
83 wxCArrayString chs(choices);
84
85 return Create(parent, winid, pos, size, chs.GetCount(), chs.GetStrings(),
86 style, validator, name);
87 }
88
89 bool wxListBox::Create(wxWindow *parent, wxWindowID winid,
90 const wxPoint& pos,
91 const wxSize& size,
92 int n, const wxString choices[],
93 long style,
94 const wxValidator& validator,
95 const wxString& name)
96 {
97 /*
98 wxLB_SINGLE
99 Single-selection list.
100
101 wxLB_MULTIPLE
102 Multiple-selection list: the user can toggle multiple items on and off.
103
104 wxLB_EXTENDED
105 Extended-selection list: the user can select multiple items using the SHIFT key and the mouse or special key combinations.
106
107 wxLB_HSCROLL
108 Create horizontal scrollbar if contents are too wide (Windows only).
109
110 wxLB_ALWAYS_SB
111 Always show a vertical scrollbar.
112
113 wxLB_NEEDED_SB
114 Only create a vertical scrollbar if needed.
115
116 wxLB_SORT
117 The listbox contents are sorted in alphabetical order.
118 */
119 wxAutoNSAutoreleasePool pool;
120 if(!CreateControl(parent,winid,pos,size,style,validator,name))
121 return false;
122
123 // Provide the data
124 m_cocoaItems = wxGCSafeRetain([NSMutableArray arrayWithCapacity:n]);
125 for(int i=0; i < n; i++)
126 {
127 [m_cocoaItems addObject: wxNSStringWithWxString(choices[i])];
128 }
129 // Remove everything
130 m_itemClientData.Clear();
131 // Initialize n elements to NULL
132 m_itemClientData.SetCount(n,NULL);
133
134 SetNSTableView([[NSTableView alloc] initWithFrame: MakeDefaultNSRect(size)]);
135 [m_cocoaNSView release];
136 [GetNSTableView() setHeaderView: nil];
137
138 // Set up the data source
139 m_cocoaDataSource = [[WX_GET_OBJC_CLASS(wxCocoaNSTableDataSource) alloc] init];
140 [GetNSTableView() setDataSource:m_cocoaDataSource];
141
142 // Add the single column
143 NSTableColumn *tableColumn = [[NSTableColumn alloc] initWithIdentifier:nil];
144 [GetNSTableView() addTableColumn: tableColumn];
145 // By default, entries should not be editable
146 [tableColumn setEditable:NO];
147 [tableColumn release];
148
149 [GetNSTableView() sizeToFit];
150 // Finish
151 if(m_parent)
152 m_parent->CocoaAddChild(this);
153 // NSTableView does WEIRD things with sizes. Wrapping it in an
154 // NSScrollView seems to be the only reasonable solution.
155 CocoaCreateNSScrollView();
156 SetInitialFrameRect(pos,size);
157
158 if ((style & wxLB_NEEDED_SB) || (style & wxLB_ALWAYS_SB))
159 {
160 [m_wxCocoaScrollView->GetNSScrollView() setHasVerticalScroller: YES];
161 }
162
163 if (style & wxLB_HSCROLL)
164 {
165 [m_wxCocoaScrollView->GetNSScrollView() setHasHorizontalScroller: YES];
166 }
167
168 // We can't set auto-hiding individually for horizontal/vertical scrollers,
169 // so we have settled on always allowing hiding for both unless the vertical
170 // setting is "always show".
171 if (((style & wxLB_NEEDED_SB) || (style & wxLB_HSCROLL)) && !(style & wxLB_ALWAYS_SB))
172 {
173 if ([m_wxCocoaScrollView->GetNSScrollView() respondsToSelector:@selector(setAutohidesScrollers:)])
174 {
175 [m_wxCocoaScrollView->GetNSScrollView() setAutohidesScrollers: YES];
176 }
177 }
178
179 // Set up extended/multiple selection flags
180 if ((style & wxLB_EXTENDED) || (style & wxLB_MULTIPLE))
181 //diff is that mult requires shift down for multi selection
182 [GetNSTableView() setAllowsMultipleSelection:true];
183
184 [GetNSTableView() setAllowsColumnSelection:false];
185 _SetWidthOfTableColumnToFitItems(tableColumn, m_cocoaItems);
186 return true;
187 }
188
189 wxSize wxListBox::DoGetBestSize() const
190 {
191 wxSize size = wxControlWithItems::DoGetBestSize();
192 // Limit best size to 100x100. It can be smaller if none of the items are very
193 // wide or if there aren't many items, but anything bigger than 100x100 ought
194 // to be asked for by the programmer. The 100x100 size is based on being barely
195 // enough for a scroller to be usable.
196 if(size.GetWidth() > 100)
197 size.SetWidth(100);
198 if(size.GetHeight() > 100)
199 size.SetHeight(100);
200 return size;
201 }
202
203 wxListBox::~wxListBox()
204 {
205 [GetNSTableView() setDataSource: nil];
206 [m_cocoaDataSource release];
207 wxGCSafeRelease(m_cocoaItems);
208 m_cocoaItems = nil;
209 DisassociateNSTableView(GetNSTableView());
210 }
211
212 bool wxListBox::_WxCocoa_GetNeedsUpdate()
213 {
214 return m_needsUpdate;
215 }
216
217 void wxListBox::_WxCocoa_SetNeedsUpdate(bool needsUpdate)
218 {
219 m_needsUpdate = needsUpdate;
220 }
221
222 void wxListBox::OnInternalIdle()
223 {
224 wxControlWithItems::OnInternalIdle();
225 if(_WxCocoa_GetNeedsUpdate())
226 {
227 _SetWidthOfTableColumnToFitItems([[GetNSTableView() tableColumns] objectAtIndex:0], m_cocoaItems);
228 [GetNSTableView() tile];
229 [GetNSTableView() reloadData];
230 _WxCocoa_SetNeedsUpdate(false);
231 }
232 }
233
234 int wxListBox::CocoaDataSource_numberOfRows()
235 {
236 return [m_cocoaItems count];
237 }
238
239 struct objc_object* wxListBox::CocoaDataSource_objectForTableColumn(
240 WX_NSTableColumn tableColumn, int rowIndex)
241 {
242 return [m_cocoaItems objectAtIndex:rowIndex];
243 }
244
245 // pure virtuals from wxListBoxBase
246 bool wxListBox::IsSelected(int n) const
247 {
248 return [GetNSTableView() isRowSelected: n];
249 }
250
251 void wxListBox::DoSetSelection(int n, bool select)
252 {
253 if(select)
254 [GetNSTableView() selectRow: n byExtendingSelection:NO];
255 else
256 [GetNSTableView() deselectRow: n];
257 }
258
259 int wxListBox::GetSelections(wxArrayInt& aSelections) const
260 {
261 aSelections.Clear();
262 NSEnumerator *enumerator = [GetNSTableView() selectedRowEnumerator];
263 while(NSNumber *num = [enumerator nextObject])
264 {
265 aSelections.Add([num intValue]);
266 }
267 return [GetNSTableView() numberOfSelectedRows];
268 }
269
270 int wxListBox::DoInsertItems(const wxArrayStringsAdapter & items, unsigned int pos, void **clientData, wxClientDataType type)
271 {
272 wxAutoNSAutoreleasePool pool;
273
274 const unsigned int numItems = items.GetCount();
275 for ( unsigned int i = 0; i < numItems; ++i, ++pos )
276 {
277 [m_cocoaItems insertObject: wxNSStringWithWxString(items[i])
278 atIndex: pos];
279 m_itemClientData.Insert(NULL, pos);
280 AssignNewItemClientData(pos, clientData, i, type);
281 }
282
283 _WxCocoa_SetNeedsUpdate(true);
284 return pos - 1;
285 }
286
287 void wxListBox::DoSetFirstItem(int n)
288 {
289 [m_cocoaItems exchangeObjectAtIndex:0 withObjectAtIndex:n];
290 void* pOld = m_itemClientData[n];
291 m_itemClientData[n] = m_itemClientData[0];
292 m_itemClientData[0] = pOld;
293 _WxCocoa_SetNeedsUpdate(true);
294 }
295
296
297 // pure virtuals from wxItemContainer
298 // deleting items
299 void wxListBox::DoClear()
300 {
301 [m_cocoaItems removeAllObjects];
302 m_itemClientData.Clear();
303 _WxCocoa_SetNeedsUpdate(true);
304 }
305
306 void wxListBox::DoDeleteOneItem(unsigned int n)
307 {
308 [m_cocoaItems removeObjectAtIndex:n];
309 m_itemClientData.RemoveAt(n);
310 _WxCocoa_SetNeedsUpdate(true);
311 }
312
313 // accessing strings
314 unsigned int wxListBox::GetCount() const
315 {
316 return (unsigned int)[m_cocoaItems count];
317 }
318
319 wxString wxListBox::GetString(unsigned int n) const
320 {
321 return wxStringWithNSString([m_cocoaItems objectAtIndex:n]);
322 }
323
324 void wxListBox::SetString(unsigned int n, const wxString& s)
325 {
326 wxAutoNSAutoreleasePool pool;
327 [m_cocoaItems removeObjectAtIndex:n];
328 [m_cocoaItems insertObject: wxNSStringWithWxString(s) atIndex: n];
329 _WxCocoa_SetNeedsUpdate(true);
330 }
331
332 int wxListBox::FindString(const wxString& s, bool bCase) const
333 {
334 // FIXME: use wxItemContainerImmutable::FindString for bCase parameter
335 wxAutoNSAutoreleasePool pool;
336 return [m_cocoaItems indexOfObject:wxNSStringWithWxString(s)];
337 }
338
339 // selection
340 int wxListBox::GetSelection() const
341 {
342 return [GetNSTableView() selectedRow];
343 }
344
345 void wxListBox::DoSetItemClientData(unsigned int n, void* clientData)
346 {
347 m_itemClientData[n] = clientData;
348 }
349
350 void* wxListBox::DoGetItemClientData(unsigned int n) const
351 {
352 return m_itemClientData[n];
353 }
354
355 #endif // wxUSE_LISTBOX