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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: wx/list.h
3 // Purpose: wxList, wxStringList classes
4 // Author: Julian Smart
5 // Modified by: VZ at 16/11/98: WX_DECLARE_LIST() and typesafe lists added
6 // Created: 29/01/98
7 // RCS-ID: $Id$
8 // Copyright: (c) 1998 Julian Smart
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 /*
13 All this is quite ugly but serves two purposes:
14 1. Be almost 100% compatible with old, untyped, wxList class
15 2. Ensure compile-time type checking for the linked lists
16
17 The idea is to have one base class (wxListBase) working with "void *" data,
18 but to hide these untyped functions - i.e. make them protected, so they
19 can only be used from derived classes which have inline member functions
20 working with right types. This achieves the 2nd goal. As for the first one,
21 we provide a special derivation of wxListBase called wxList which looks just
22 like the old class.
23 */
24
25 #ifndef _WX_LIST_H_
26 #define _WX_LIST_H_
27
28 // -----------------------------------------------------------------------------
29 // headers
30 // -----------------------------------------------------------------------------
31
32 #include "wx/defs.h"
33 #include "wx/object.h"
34 #include "wx/string.h"
35
36 #if wxUSE_STL
37 #include "wx/beforestd.h"
38 #include <algorithm>
39 #include <iterator>
40 #include <list>
41 #include "wx/afterstd.h"
42 #endif
43
44 // ----------------------------------------------------------------------------
45 // types
46 // ----------------------------------------------------------------------------
47
48 class WXDLLIMPEXP_FWD_BASE wxObjectListNode;
49 typedef wxObjectListNode wxNode;
50
51 #if wxUSE_STL
52
53 #define wxLIST_COMPATIBILITY
54
55 #define WX_DECLARE_LIST_3(elT, dummy1, liT, dummy2, decl) \
56 WX_DECLARE_LIST_WITH_DECL(elT, liT, decl)
57 #define WX_DECLARE_LIST_PTR_3(elT, dummy1, liT, dummy2, decl) \
58 WX_DECLARE_LIST_3(elT, dummy1, liT, dummy2, decl)
59
60 #define WX_DECLARE_LIST_2(elT, liT, dummy, decl) \
61 WX_DECLARE_LIST_WITH_DECL(elT, liT, decl)
62 #define WX_DECLARE_LIST_PTR_2(elT, liT, dummy, decl) \
63 WX_DECLARE_LIST_2(elT, liT, dummy, decl) \
64
65 #define WX_DECLARE_LIST_WITH_DECL(elT, liT, decl) \
66 WX_DECLARE_LIST_XO(elT*, liT, decl)
67
68 #if !defined(__VISUALC__) || __VISUALC__ >= 1300 // == !VC6
69
70 template<class T>
71 class wxList_SortFunction
72 {
73 public:
74 wxList_SortFunction(wxSortCompareFunction f) : m_f(f) { }
75 bool operator()(const T& i1, const T& i2)
76 { return m_f((T*)&i1, (T*)&i2) < 0; }
77 private:
78 wxSortCompareFunction m_f;
79 };
80
81 #define WX_LIST_SORTFUNCTION( elT, f ) wxList_SortFunction<elT>(f)
82 #define WX_LIST_VC6_WORKAROUND(elT, liT, decl)
83
84 #else // if defined( __VISUALC__ ) && __VISUALC__ < 1300 // == VC6
85
86 #define WX_LIST_SORTFUNCTION( elT, f ) std::greater<elT>( f )
87 #define WX_LIST_VC6_WORKAROUND(elT, liT, decl) \
88 decl liT; \
89 \
90 /* Workaround for broken VC6 STL incorrectly requires a std::greater<> */ \
91 /* to be passed into std::list::sort() */ \
92 template <> \
93 struct std::greater<elT> \
94 { \
95 private: \
96 wxSortCompareFunction m_CompFunc; \
97 public: \
98 greater( wxSortCompareFunction compfunc = NULL ) \
99 : m_CompFunc( compfunc ) {} \
100 bool operator()(const elT X, const elT Y) const \
101 { \
102 return m_CompFunc ? \
103 ( m_CompFunc( wxListCastElementToVoidPtr(X), \
104 wxListCastElementToVoidPtr(Y) ) < 0 ) : \
105 ( X > Y ); \
106 } \
107 };
108
109 // helper for std::greater<elT> above:
110 template<typename T>
111 inline const void *wxListCastElementToVoidPtr(const T* ptr) { return ptr; }
112 inline const void *wxListCastElementToVoidPtr(const wxString& str)
113 { return (const char*)str; }
114
115 #endif // VC6/!VC6
116
117 /*
118 Note 1: the outer helper class _WX_LIST_HELPER_##liT below is a workaround
119 for mingw 3.2.3 compiler bug that prevents a static function of liT class
120 from being exported into dll. A minimal code snippet reproducing the bug:
121
122 struct WXDLLIMPEXP_CORE Foo
123 {
124 static void Bar();
125 struct SomeInnerClass
126 {
127 friend class Foo; // comment this out to make it link
128 };
129 ~Foo()
130 {
131 Bar();
132 }
133 };
134
135 The program does not link under mingw_gcc 3.2.3 producing undefined
136 reference to Foo::Bar() function
137
138
139 Note 2: the EmptyList is needed to allow having a NULL pointer-like
140 invalid iterator. We used to use just an uninitialized iterator object
141 instead but this fails with some debug/checked versions of STL, notably the
142 glibc version activated with _GLIBCXX_DEBUG, so we need to have a separate
143 invalid iterator.
144 */
145
146 // the real wxList-class declaration
147 #define WX_DECLARE_LIST_XO(elT, liT, decl) \
148 decl _WX_LIST_HELPER_##liT \
149 { \
150 typedef elT _WX_LIST_ITEM_TYPE_##liT; \
151 public: \
152 static void DeleteFunction( _WX_LIST_ITEM_TYPE_##liT X ); \
153 }; \
154 \
155 WX_LIST_VC6_WORKAROUND(elT, liT, decl) \
156 decl liT : public std::list<elT> \
157 { \
158 private: \
159 typedef std::list<elT> BaseListType; \
160 static BaseListType EmptyList; \
161 \
162 bool m_destroy; \
163 \
164 public: \
165 decl compatibility_iterator \
166 { \
167 private: \
168 /* Workaround for broken VC6 nested class name resolution */ \
169 typedef std::list<elT>::iterator iterator; \
170 friend class liT; \
171 \
172 iterator m_iter; \
173 liT * m_list; \
174 \
175 public: \
176 compatibility_iterator() \
177 : m_iter(EmptyList.end()), m_list( NULL ) {} \
178 compatibility_iterator( liT* li, iterator i ) \
179 : m_iter( i ), m_list( li ) {} \
180 compatibility_iterator( const liT* li, iterator i ) \
181 : m_iter( i ), m_list( const_cast< liT* >( li ) ) {} \
182 \
183 compatibility_iterator* operator->() { return this; } \
184 const compatibility_iterator* operator->() const { return this; } \
185 \
186 bool operator==(const compatibility_iterator& i) const \
187 { \
188 wxASSERT_MSG( m_list && i.m_list, \
189 _T("comparing invalid iterators is illegal") ); \
190 return (m_list == i.m_list) && (m_iter == i.m_iter); \
191 } \
192 bool operator!=(const compatibility_iterator& i) const \
193 { return !( operator==( i ) ); } \
194 operator bool() const \
195 { return m_list ? m_iter != m_list->end() : false; } \
196 bool operator !() const \
197 { return !( operator bool() ); } \
198 \
199 elT GetData() const \
200 { return *m_iter; } \
201 void SetData( elT e ) \
202 { *m_iter = e; } \
203 \
204 compatibility_iterator GetNext() const \
205 { \
206 iterator i = m_iter; \
207 return compatibility_iterator( m_list, ++i ); \
208 } \
209 compatibility_iterator GetPrevious() const \
210 { \
211 if ( m_iter == m_list->begin() ) \
212 return compatibility_iterator(); \
213 \
214 iterator i = m_iter; \
215 return compatibility_iterator( m_list, --i ); \
216 } \
217 int IndexOf() const \
218 { \
219 return *this ? std::distance( m_list->begin(), m_iter ) \
220 : wxNOT_FOUND; \
221 } \
222 }; \
223 public: \
224 liT() : m_destroy( false ) {} \
225 \
226 compatibility_iterator Find( const elT e ) const \
227 { \
228 liT* _this = const_cast< liT* >( this ); \
229 return compatibility_iterator( _this, \
230 std::find( _this->begin(), _this->end(), e ) ); \
231 } \
232 \
233 bool IsEmpty() const \
234 { return empty(); } \
235 size_t GetCount() const \
236 { return size(); } \
237 int Number() const \
238 { return static_cast< int >( GetCount() ); } \
239 \
240 compatibility_iterator Item( size_t idx ) const \
241 { \
242 iterator i = const_cast< liT* >(this)->begin(); \
243 std::advance( i, idx ); \
244 return compatibility_iterator( this, i ); \
245 } \
246 elT operator[](size_t idx) const \
247 { \
248 return Item(idx).GetData(); \
249 } \
250 \
251 compatibility_iterator GetFirst() const \
252 { \
253 return compatibility_iterator( this, \
254 const_cast< liT* >(this)->begin() ); \
255 } \
256 compatibility_iterator GetLast() const \
257 { \
258 iterator i = const_cast< liT* >(this)->end(); \
259 return compatibility_iterator( this, !empty() ? --i : i ); \
260 } \
261 compatibility_iterator Member( elT e ) const \
262 { return Find( e ); } \
263 compatibility_iterator Nth( int n ) const \
264 { return Item( n ); } \
265 int IndexOf( elT e ) const \
266 { return Find( e ).IndexOf(); } \
267 \
268 compatibility_iterator Append( elT e ) \
269 { \
270 push_back( e ); \
271 return GetLast(); \
272 } \
273 compatibility_iterator Insert( elT e ) \
274 { \
275 push_front( e ); \
276 return compatibility_iterator( this, begin() ); \
277 } \
278 compatibility_iterator Insert(const compatibility_iterator & i, elT e)\
279 { \
280 return compatibility_iterator( this, insert( i.m_iter, e ) ); \
281 } \
282 compatibility_iterator Insert( size_t idx, elT e ) \
283 { \
284 return compatibility_iterator( this, \
285 insert( Item( idx ).m_iter, e ) ); \
286 } \
287 \
288 void DeleteContents( bool destroy ) \
289 { m_destroy = destroy; } \
290 bool GetDeleteContents() const \
291 { return m_destroy; } \
292 void Erase( const compatibility_iterator& i ) \
293 { \
294 if ( m_destroy ) \
295 _WX_LIST_HELPER_##liT::DeleteFunction( i->GetData() ); \
296 erase( i.m_iter ); \
297 } \
298 bool DeleteNode( const compatibility_iterator& i ) \
299 { \
300 if( i ) \
301 { \
302 Erase( i ); \
303 return true; \
304 } \
305 return false; \
306 } \
307 bool DeleteObject( elT e ) \
308 { \
309 return DeleteNode( Find( e ) ); \
310 } \
311 void Clear() \
312 { \
313 if ( m_destroy ) \
314 std::for_each( begin(), end(), \
315 _WX_LIST_HELPER_##liT::DeleteFunction ); \
316 clear(); \
317 } \
318 /* Workaround for broken VC6 std::list::sort() see above */ \
319 void Sort( wxSortCompareFunction compfunc ) \
320 { sort( WX_LIST_SORTFUNCTION( elT, compfunc ) ); } \
321 ~liT() { Clear(); } \
322 \
323 /* It needs access to our EmptyList */ \
324 friend class compatibility_iterator; \
325 }
326
327 #define WX_DECLARE_LIST(elementtype, listname) \
328 WX_DECLARE_LIST_WITH_DECL(elementtype, listname, class)
329 #define WX_DECLARE_LIST_PTR(elementtype, listname) \
330 WX_DECLARE_LIST(elementtype, listname)
331
332 #define WX_DECLARE_EXPORTED_LIST(elementtype, listname) \
333 WX_DECLARE_LIST_WITH_DECL(elementtype, listname, class WXDLLIMPEXP_CORE)
334 #define WX_DECLARE_EXPORTED_LIST_PTR(elementtype, listname) \
335 WX_DECLARE_EXPORTED_LIST(elementtype, listname)
336
337 #define WX_DECLARE_USER_EXPORTED_LIST(elementtype, listname, usergoo) \
338 WX_DECLARE_LIST_WITH_DECL(elementtype, listname, class usergoo)
339 #define WX_DECLARE_USER_EXPORTED_LIST_PTR(elementtype, listname, usergoo) \
340 WX_DECLARE_USER_EXPORTED_LIST(elementtype, listname, usergoo)
341
342 // this macro must be inserted in your program after
343 // #include "wx/listimpl.cpp"
344 #define WX_DEFINE_LIST(name) "don't forget to include listimpl.cpp!"
345
346 #define WX_DEFINE_EXPORTED_LIST(name) WX_DEFINE_LIST(name)
347 #define WX_DEFINE_USER_EXPORTED_LIST(name) WX_DEFINE_LIST(name)
348
349 #else // if !wxUSE_STL
350
351
352 // undef it to get rid of old, deprecated functions
353 #define wxLIST_COMPATIBILITY
354
355 // -----------------------------------------------------------------------------
356 // key stuff: a list may be optionally keyed on integer or string key
357 // -----------------------------------------------------------------------------
358
359 union wxListKeyValue
360 {
361 long integer;
362 wxString *string;
363 };
364
365 // a struct which may contain both types of keys
366 //
367 // implementation note: on one hand, this class allows to have only one function
368 // for any keyed operation instead of 2 almost equivalent. OTOH, it's needed to
369 // resolve ambiguity which we would otherwise have with wxStringList::Find() and
370 // wxList::Find(const char *).
371 class WXDLLIMPEXP_BASE wxListKey
372 {
373 public:
374 // implicit ctors
375 wxListKey() : m_keyType(wxKEY_NONE)
376 { }
377 wxListKey(long i) : m_keyType(wxKEY_INTEGER)
378 { m_key.integer = i; }
379 wxListKey(const wxString& s) : m_keyType(wxKEY_STRING)
380 { m_key.string = new wxString(s); }
381 wxListKey(const char *s) : m_keyType(wxKEY_STRING)
382 { m_key.string = new wxString(s); }
383 wxListKey(const wchar_t *s) : m_keyType(wxKEY_STRING)
384 { m_key.string = new wxString(s); }
385
386 // accessors
387 wxKeyType GetKeyType() const { return m_keyType; }
388 const wxString GetString() const
389 { wxASSERT( m_keyType == wxKEY_STRING ); return *m_key.string; }
390 long GetNumber() const
391 { wxASSERT( m_keyType == wxKEY_INTEGER ); return m_key.integer; }
392
393 // comparison
394 // Note: implementation moved to list.cpp to prevent BC++ inline
395 // expansion warning.
396 bool operator==(wxListKeyValue value) const ;
397
398 // dtor
399 ~wxListKey()
400 {
401 if ( m_keyType == wxKEY_STRING )
402 delete m_key.string;
403 }
404
405 private:
406 wxKeyType m_keyType;
407 wxListKeyValue m_key;
408 };
409
410 // -----------------------------------------------------------------------------
411 // wxNodeBase class is a (base for) node in a double linked list
412 // -----------------------------------------------------------------------------
413
414 extern WXDLLIMPEXP_DATA_BASE(wxListKey) wxDefaultListKey;
415
416 class WXDLLIMPEXP_FWD_BASE wxListBase;
417
418 class WXDLLIMPEXP_BASE wxNodeBase
419 {
420 friend class wxListBase;
421 public:
422 // ctor
423 wxNodeBase(wxListBase *list = (wxListBase *)NULL,
424 wxNodeBase *previous = (wxNodeBase *)NULL,
425 wxNodeBase *next = (wxNodeBase *)NULL,
426 void *data = NULL,
427 const wxListKey& key = wxDefaultListKey);
428
429 virtual ~wxNodeBase();
430
431 // FIXME no check is done that the list is really keyed on strings
432 wxString GetKeyString() const { return *m_key.string; }
433 long GetKeyInteger() const { return m_key.integer; }
434
435 // Necessary for some existing code
436 void SetKeyString(const wxString& s) { m_key.string = new wxString(s); }
437 void SetKeyInteger(long i) { m_key.integer = i; }
438
439 #ifdef wxLIST_COMPATIBILITY
440 // compatibility methods, use Get* instead.
441 wxDEPRECATED( wxNode *Next() const );
442 wxDEPRECATED( wxNode *Previous() const );
443 wxDEPRECATED( wxObject *Data() const );
444 #endif // wxLIST_COMPATIBILITY
445
446 protected:
447 // all these are going to be "overloaded" in the derived classes
448 wxNodeBase *GetNext() const { return m_next; }
449 wxNodeBase *GetPrevious() const { return m_previous; }
450
451 void *GetData() const { return m_data; }
452 void SetData(void *data) { m_data = data; }
453
454 // get 0-based index of this node within the list or wxNOT_FOUND
455 int IndexOf() const;
456
457 virtual void DeleteData() { }
458 public:
459 // for wxList::iterator
460 void** GetDataPtr() const { return &(const_cast<wxNodeBase*>(this)->m_data); }
461 private:
462 // optional key stuff
463 wxListKeyValue m_key;
464
465 void *m_data; // user data
466 wxNodeBase *m_next, // next and previous nodes in the list
467 *m_previous;
468
469 wxListBase *m_list; // list we belong to
470
471 DECLARE_NO_COPY_CLASS(wxNodeBase)
472 };
473
474 // -----------------------------------------------------------------------------
475 // a double-linked list class
476 // -----------------------------------------------------------------------------
477
478 class WXDLLIMPEXP_FWD_BASE wxList;
479
480 class WXDLLIMPEXP_BASE wxListBase
481 {
482 friend class wxNodeBase; // should be able to call DetachNode()
483 friend class wxHashTableBase; // should be able to call untyped Find()
484
485 public:
486 // default ctor & dtor
487 wxListBase(wxKeyType keyType = wxKEY_NONE)
488 { Init(keyType); }
489 virtual ~wxListBase();
490
491 // accessors
492 // count of items in the list
493 size_t GetCount() const { return m_count; }
494
495 // return true if this list is empty
496 bool IsEmpty() const { return m_count == 0; }
497
498 // operations
499
500 // delete all nodes
501 void Clear();
502
503 // instruct it to destroy user data when deleting nodes
504 void DeleteContents(bool destroy) { m_destroy = destroy; }
505
506 // query if to delete
507 bool GetDeleteContents() const
508 { return m_destroy; }
509
510 // get the keytype
511 wxKeyType GetKeyType() const
512 { return m_keyType; }
513
514 // set the keytype (required by the serial code)
515 void SetKeyType(wxKeyType keyType)
516 { wxASSERT( m_count==0 ); m_keyType = keyType; }
517
518 #ifdef wxLIST_COMPATIBILITY
519 // compatibility methods from old wxList
520 wxDEPRECATED( int Number() const ); // use GetCount instead.
521 wxDEPRECATED( wxNode *First() const ); // use GetFirst
522 wxDEPRECATED( wxNode *Last() const ); // use GetLast
523 wxDEPRECATED( wxNode *Nth(size_t n) const ); // use Item
524
525 // kludge for typesafe list migration in core classes.
526 wxDEPRECATED( operator wxList&() const );
527 #endif // wxLIST_COMPATIBILITY
528
529 protected:
530
531 // all methods here are "overloaded" in derived classes to provide compile
532 // time type checking
533
534 // create a node for the list of this type
535 virtual wxNodeBase *CreateNode(wxNodeBase *prev, wxNodeBase *next,
536 void *data,
537 const wxListKey& key = wxDefaultListKey) = 0;
538
539
540 // ctors
541 // from an array
542 wxListBase(size_t count, void *elements[]);
543 // from a sequence of objects
544 wxListBase(void *object, ... /* terminate with NULL */);
545
546 protected:
547 void Assign(const wxListBase& list)
548 { Clear(); DoCopy(list); }
549
550 // get list head/tail
551 wxNodeBase *GetFirst() const { return m_nodeFirst; }
552 wxNodeBase *GetLast() const { return m_nodeLast; }
553
554 // by (0-based) index
555 wxNodeBase *Item(size_t index) const;
556
557 // get the list item's data
558 void *operator[](size_t n) const
559 {
560 wxNodeBase *node = Item(n);
561
562 return node ? node->GetData() : (wxNodeBase *)NULL;
563 }
564
565 // operations
566 // append to end of list
567 wxNodeBase *Prepend(void *object)
568 { return (wxNodeBase *)wxListBase::Insert(object); }
569 // append to beginning of list
570 wxNodeBase *Append(void *object);
571 // insert a new item at the beginning of the list
572 wxNodeBase *Insert(void *object) { return Insert( (wxNodeBase*)NULL, object); }
573 // insert a new item at the given position
574 wxNodeBase *Insert(size_t pos, void *object)
575 { return pos == GetCount() ? Append(object)
576 : Insert(Item(pos), object); }
577 // insert before given node or at front of list if prev == NULL
578 wxNodeBase *Insert(wxNodeBase *prev, void *object);
579
580 // keyed append
581 wxNodeBase *Append(long key, void *object);
582 wxNodeBase *Append(const wxString& key, void *object);
583
584 // removes node from the list but doesn't delete it (returns pointer
585 // to the node or NULL if it wasn't found in the list)
586 wxNodeBase *DetachNode(wxNodeBase *node);
587 // delete element from list, returns false if node not found
588 bool DeleteNode(wxNodeBase *node);
589 // finds object pointer and deletes node (and object if DeleteContents
590 // is on), returns false if object not found
591 bool DeleteObject(void *object);
592
593 // search (all return NULL if item not found)
594 // by data
595 wxNodeBase *Find(const void *object) const;
596
597 // by key
598 wxNodeBase *Find(const wxListKey& key) const;
599
600 // get 0-based index of object or wxNOT_FOUND
601 int IndexOf( void *object ) const;
602
603 // this function allows the sorting of arbitrary lists by giving
604 // a function to compare two list elements. The list is sorted in place.
605 void Sort(const wxSortCompareFunction compfunc);
606
607 // functions for iterating over the list
608 void *FirstThat(wxListIterateFunction func);
609 void ForEach(wxListIterateFunction func);
610 void *LastThat(wxListIterateFunction func);
611
612 // for STL interface, "last" points to one after the last node
613 // of the controlled sequence (NULL for the end of the list)
614 void Reverse();
615 void DeleteNodes(wxNodeBase* first, wxNodeBase* last);
616 private:
617
618 // common part of all ctors
619 void Init(wxKeyType keyType = wxKEY_NONE);
620
621 // helpers
622 // common part of copy ctor and assignment operator
623 void DoCopy(const wxListBase& list);
624 // common part of all Append()s
625 wxNodeBase *AppendCommon(wxNodeBase *node);
626 // free node's data and node itself
627 void DoDeleteNode(wxNodeBase *node);
628
629 size_t m_count; // number of elements in the list
630 bool m_destroy; // destroy user data when deleting list items?
631 wxNodeBase *m_nodeFirst, // pointers to the head and tail of the list
632 *m_nodeLast;
633
634 wxKeyType m_keyType; // type of our keys (may be wxKEY_NONE)
635 };
636
637 // -----------------------------------------------------------------------------
638 // macros for definition of "template" list type
639 // -----------------------------------------------------------------------------
640
641 // and now some heavy magic...
642
643 // declare a list type named 'name' and containing elements of type 'T *'
644 // (as a by product of macro expansion you also get wx##name##Node
645 // wxNode-derived type)
646 //
647 // implementation details:
648 // 1. We define _WX_LIST_ITEM_TYPE_##name typedef to save in it the item type
649 // for the list of given type - this allows us to pass only the list name
650 // to WX_DEFINE_LIST() even if it needs both the name and the type
651 //
652 // 2. We redefine all non-type-safe wxList functions with type-safe versions
653 // which don't take any space (everything is inline), but bring compile
654 // time error checking.
655 //
656 // 3. The macro which is usually used (WX_DECLARE_LIST) is defined in terms of
657 // a more generic WX_DECLARE_LIST_2 macro which, in turn, uses the most
658 // generic WX_DECLARE_LIST_3 one. The last macro adds a sometimes
659 // interesting capability to store polymorphic objects in the list and is
660 // particularly useful with, for example, "wxWindow *" list where the
661 // wxWindowBase pointers are put into the list, but wxWindow pointers are
662 // retrieved from it.
663 //
664 // 4. final hack is that WX_DECLARE_LIST_3 is defined in terms of
665 // WX_DECLARE_LIST_4 to allow defining classes without operator->() as
666 // it results in compiler warnings when this operator doesn't make sense
667 // (i.e. stored elements are not pointers)
668
669 // common part of WX_DECLARE_LIST_3 and WX_DECLARE_LIST_PTR_3
670 #define WX_DECLARE_LIST_4(T, Tbase, name, nodetype, classexp, ptrop) \
671 typedef int (*wxSortFuncFor_##name)(const T **, const T **); \
672 \
673 classexp nodetype : public wxNodeBase \
674 { \
675 public: \
676 nodetype(wxListBase *list = (wxListBase *)NULL, \
677 nodetype *previous = (nodetype *)NULL, \
678 nodetype *next = (nodetype *)NULL, \
679 T *data = (T *)NULL, \
680 const wxListKey& key = wxDefaultListKey) \
681 : wxNodeBase(list, previous, next, data, key) { } \
682 \
683 nodetype *GetNext() const \
684 { return (nodetype *)wxNodeBase::GetNext(); } \
685 nodetype *GetPrevious() const \
686 { return (nodetype *)wxNodeBase::GetPrevious(); } \
687 \
688 T *GetData() const \
689 { return (T *)wxNodeBase::GetData(); } \
690 void SetData(T *data) \
691 { wxNodeBase::SetData(data); } \
692 \
693 protected: \
694 virtual void DeleteData(); \
695 \
696 DECLARE_NO_COPY_CLASS(nodetype) \
697 }; \
698 \
699 classexp name : public wxListBase \
700 { \
701 public: \
702 typedef nodetype Node; \
703 classexp compatibility_iterator \
704 { \
705 public: \
706 compatibility_iterator(Node *ptr = NULL) : m_ptr(ptr) { } \
707 \
708 Node *operator->() const { return m_ptr; } \
709 operator Node *() const { return m_ptr; } \
710 \
711 private: \
712 Node *m_ptr; \
713 }; \
714 \
715 name(wxKeyType keyType = wxKEY_NONE) : wxListBase(keyType) \
716 { } \
717 name(const name& list) : wxListBase(list.GetKeyType()) \
718 { Assign(list); } \
719 name(size_t count, T *elements[]) \
720 : wxListBase(count, (void **)elements) { } \
721 \
722 name& operator=(const name& list) \
723 { if (&list != this) Assign(list); return *this; } \
724 \
725 nodetype *GetFirst() const \
726 { return (nodetype *)wxListBase::GetFirst(); } \
727 nodetype *GetLast() const \
728 { return (nodetype *)wxListBase::GetLast(); } \
729 \
730 nodetype *Item(size_t index) const \
731 { return (nodetype *)wxListBase::Item(index); } \
732 \
733 T *operator[](size_t index) const \
734 { \
735 nodetype *node = Item(index); \
736 return node ? (T*)(node->GetData()) : (T*)NULL; \
737 } \
738 \
739 nodetype *Append(Tbase *object) \
740 { return (nodetype *)wxListBase::Append(object); } \
741 nodetype *Insert(Tbase *object) \
742 { return (nodetype *)Insert((nodetype*)NULL, object); } \
743 nodetype *Insert(size_t pos, Tbase *object) \
744 { return (nodetype *)wxListBase::Insert(pos, object); } \
745 nodetype *Insert(nodetype *prev, Tbase *object) \
746 { return (nodetype *)wxListBase::Insert(prev, object); } \
747 \
748 nodetype *Append(long key, void *object) \
749 { return (nodetype *)wxListBase::Append(key, object); } \
750 nodetype *Append(const wxChar *key, void *object) \
751 { return (nodetype *)wxListBase::Append(key, object); } \
752 \
753 nodetype *DetachNode(nodetype *node) \
754 { return (nodetype *)wxListBase::DetachNode(node); } \
755 bool DeleteNode(nodetype *node) \
756 { return wxListBase::DeleteNode(node); } \
757 bool DeleteObject(Tbase *object) \
758 { return wxListBase::DeleteObject(object); } \
759 void Erase(nodetype *it) \
760 { DeleteNode(it); } \
761 \
762 nodetype *Find(const Tbase *object) const \
763 { return (nodetype *)wxListBase::Find(object); } \
764 \
765 virtual nodetype *Find(const wxListKey& key) const \
766 { return (nodetype *)wxListBase::Find(key); } \
767 \
768 int IndexOf(Tbase *object) const \
769 { return wxListBase::IndexOf(object); } \
770 \
771 void Sort(wxSortCompareFunction func) \
772 { wxListBase::Sort(func); } \
773 void Sort(wxSortFuncFor_##name func) \
774 { Sort((wxSortCompareFunction)func); } \
775 \
776 protected: \
777 virtual wxNodeBase *CreateNode(wxNodeBase *prev, wxNodeBase *next, \
778 void *data, \
779 const wxListKey& key = wxDefaultListKey) \
780 { \
781 return new nodetype(this, \
782 (nodetype *)prev, (nodetype *)next, \
783 (T *)data, key); \
784 } \
785 /* STL interface */ \
786 public: \
787 typedef size_t size_type; \
788 typedef int difference_type; \
789 typedef T* value_type; \
790 typedef Tbase* base_value_type; \
791 typedef value_type& reference; \
792 typedef const value_type& const_reference; \
793 typedef base_value_type& base_reference; \
794 typedef const base_value_type& const_base_reference; \
795 \
796 classexp iterator \
797 { \
798 typedef name list; \
799 public: \
800 typedef nodetype Node; \
801 typedef iterator itor; \
802 typedef T* value_type; \
803 typedef value_type* ptr_type; \
804 typedef value_type& reference; \
805 \
806 Node* m_node; \
807 Node* m_init; \
808 public: \
809 typedef reference reference_type; \
810 typedef ptr_type pointer_type; \
811 \
812 iterator(Node* node, Node* init) : m_node(node), m_init(init) {}\
813 iterator() : m_node(NULL), m_init(NULL) { } \
814 reference_type operator*() const \
815 { return *(pointer_type)m_node->GetDataPtr(); } \
816 ptrop \
817 itor& operator++() { m_node = m_node->GetNext(); return *this; }\
818 const itor operator++(int) \
819 { itor tmp = *this; m_node = m_node->GetNext(); return tmp; }\
820 itor& operator--() \
821 { \
822 m_node = m_node ? m_node->GetPrevious() : m_init; \
823 return *this; \
824 } \
825 const itor operator--(int) \
826 { \
827 itor tmp = *this; \
828 m_node = m_node ? m_node->GetPrevious() : m_init; \
829 return tmp; \
830 } \
831 bool operator!=(const itor& it) const \
832 { return it.m_node != m_node; } \
833 bool operator==(const itor& it) const \
834 { return it.m_node == m_node; } \
835 }; \
836 classexp const_iterator \
837 { \
838 typedef name list; \
839 public: \
840 typedef nodetype Node; \
841 typedef T* value_type; \
842 typedef const value_type& const_reference; \
843 typedef const_iterator itor; \
844 typedef value_type* ptr_type; \
845 \
846 Node* m_node; \
847 Node* m_init; \
848 public: \
849 typedef const_reference reference_type; \
850 typedef const ptr_type pointer_type; \
851 \
852 const_iterator(Node* node, Node* init) \
853 : m_node(node), m_init(init) { } \
854 const_iterator() : m_node(NULL), m_init(NULL) { } \
855 const_iterator(const iterator& it) \
856 : m_node(it.m_node), m_init(it.m_init) { } \
857 reference_type operator*() const \
858 { return *(pointer_type)m_node->GetDataPtr(); } \
859 ptrop \
860 itor& operator++() { m_node = m_node->GetNext(); return *this; }\
861 const itor operator++(int) \
862 { itor tmp = *this; m_node = m_node->GetNext(); return tmp; }\
863 itor& operator--() \
864 { \
865 m_node = m_node ? m_node->GetPrevious() : m_init; \
866 return *this; \
867 } \
868 const itor operator--(int) \
869 { \
870 itor tmp = *this; \
871 m_node = m_node ? m_node->GetPrevious() : m_init; \
872 return tmp; \
873 } \
874 bool operator!=(const itor& it) const \
875 { return it.m_node != m_node; } \
876 bool operator==(const itor& it) const \
877 { return it.m_node == m_node; } \
878 }; \
879 classexp reverse_iterator \
880 { \
881 typedef name list; \
882 public: \
883 typedef nodetype Node; \
884 typedef T* value_type; \
885 typedef reverse_iterator itor; \
886 typedef value_type* ptr_type; \
887 typedef value_type& reference; \
888 \
889 Node* m_node; \
890 Node* m_init; \
891 public: \
892 typedef reference reference_type; \
893 typedef ptr_type pointer_type; \
894 \
895 reverse_iterator(Node* node, Node* init) \
896 : m_node(node), m_init(init) { } \
897 reverse_iterator() : m_node(NULL), m_init(NULL) { } \
898 reference_type operator*() const \
899 { return *(pointer_type)m_node->GetDataPtr(); } \
900 ptrop \
901 itor& operator++() \
902 { m_node = m_node->GetPrevious(); return *this; } \
903 const itor operator++(int) \
904 { itor tmp = *this; m_node = m_node->GetPrevious(); return tmp; }\
905 itor& operator--() \
906 { m_node = m_node ? m_node->GetNext() : m_init; return *this; } \
907 const itor operator--(int) \
908 { \
909 itor tmp = *this; \
910 m_node = m_node ? m_node->GetNext() : m_init; \
911 return tmp; \
912 } \
913 bool operator!=(const itor& it) const \
914 { return it.m_node != m_node; } \
915 bool operator==(const itor& it) const \
916 { return it.m_node == m_node; } \
917 }; \
918 classexp const_reverse_iterator \
919 { \
920 typedef name list; \
921 public: \
922 typedef nodetype Node; \
923 typedef T* value_type; \
924 typedef const_reverse_iterator itor; \
925 typedef value_type* ptr_type; \
926 typedef const value_type& const_reference; \
927 \
928 Node* m_node; \
929 Node* m_init; \
930 public: \
931 typedef const_reference reference_type; \
932 typedef const ptr_type pointer_type; \
933 \
934 const_reverse_iterator(Node* node, Node* init) \
935 : m_node(node), m_init(init) { } \
936 const_reverse_iterator() : m_node(NULL), m_init(NULL) { } \
937 const_reverse_iterator(const reverse_iterator& it) \
938 : m_node(it.m_node), m_init(it.m_init) { } \
939 reference_type operator*() const \
940 { return *(pointer_type)m_node->GetDataPtr(); } \
941 ptrop \
942 itor& operator++() \
943 { m_node = m_node->GetPrevious(); return *this; } \
944 const itor operator++(int) \
945 { itor tmp = *this; m_node = m_node->GetPrevious(); return tmp; }\
946 itor& operator--() \
947 { m_node = m_node ? m_node->GetNext() : m_init; return *this;}\
948 const itor operator--(int) \
949 { \
950 itor tmp = *this; \
951 m_node = m_node ? m_node->GetNext() : m_init; \
952 return tmp; \
953 } \
954 bool operator!=(const itor& it) const \
955 { return it.m_node != m_node; } \
956 bool operator==(const itor& it) const \
957 { return it.m_node == m_node; } \
958 }; \
959 \
960 wxEXPLICIT name(size_type n, const_reference v = value_type()) \
961 { assign(n, v); } \
962 name(const const_iterator& first, const const_iterator& last) \
963 { assign(first, last); } \
964 iterator begin() { return iterator(GetFirst(), GetLast()); } \
965 const_iterator begin() const \
966 { return const_iterator(GetFirst(), GetLast()); } \
967 iterator end() { return iterator(NULL, GetLast()); } \
968 const_iterator end() const { return const_iterator(NULL, GetLast()); }\
969 reverse_iterator rbegin() \
970 { return reverse_iterator(GetLast(), GetFirst()); } \
971 const_reverse_iterator rbegin() const \
972 { return const_reverse_iterator(GetLast(), GetFirst()); } \
973 reverse_iterator rend() { return reverse_iterator(NULL, GetFirst()); }\
974 const_reverse_iterator rend() const \
975 { return const_reverse_iterator(NULL, GetFirst()); } \
976 void resize(size_type n, value_type v = value_type()) \
977 { \
978 while (n < size()) \
979 pop_back(); \
980 while (n > size()) \
981 push_back(v); \
982 } \
983 size_type size() const { return GetCount(); } \
984 size_type max_size() const { return INT_MAX; } \
985 bool empty() const { return IsEmpty(); } \
986 reference front() { return *begin(); } \
987 const_reference front() const { return *begin(); } \
988 reference back() { iterator tmp = end(); return *--tmp; } \
989 const_reference back() const { const_iterator tmp = end(); return *--tmp; }\
990 void push_front(const_reference v = value_type()) \
991 { Insert(GetFirst(), (const_base_reference)v); } \
992 void pop_front() { DeleteNode(GetFirst()); } \
993 void push_back(const_reference v = value_type()) \
994 { Append((const_base_reference)v); } \
995 void pop_back() { DeleteNode(GetLast()); } \
996 void assign(const_iterator first, const const_iterator& last) \
997 { \
998 clear(); \
999 for(; first != last; ++first) \
1000 Append((const_base_reference)*first); \
1001 } \
1002 void assign(size_type n, const_reference v = value_type()) \
1003 { \
1004 clear(); \
1005 for(size_type i = 0; i < n; ++i) \
1006 Append((const_base_reference)v); \
1007 } \
1008 iterator insert(const iterator& it, const_reference v) \
1009 { \
1010 if ( it == end() ) \
1011 Append((const_base_reference)v); \
1012 else \
1013 Insert(it.m_node, (const_base_reference)v); \
1014 iterator itprev(it); \
1015 return itprev--; \
1016 } \
1017 void insert(const iterator& it, size_type n, const_reference v) \
1018 { \
1019 for(size_type i = 0; i < n; ++i) \
1020 Insert(it.m_node, (const_base_reference)v); \
1021 } \
1022 void insert(const iterator& it, \
1023 const_iterator first, const const_iterator& last) \
1024 { \
1025 for(; first != last; ++first) \
1026 Insert(it.m_node, (const_base_reference)*first); \
1027 } \
1028 iterator erase(const iterator& it) \
1029 { \
1030 iterator next = iterator(it.m_node->GetNext(), GetLast()); \
1031 DeleteNode(it.m_node); return next; \
1032 } \
1033 iterator erase(const iterator& first, const iterator& last) \
1034 { \
1035 iterator next = last; ++next; \
1036 DeleteNodes(first.m_node, last.m_node); \
1037 return next; \
1038 } \
1039 void clear() { Clear(); } \
1040 void splice(const iterator& it, name& l, const iterator& first, const iterator& last)\
1041 { insert(it, first, last); l.erase(first, last); } \
1042 void splice(const iterator& it, name& l) \
1043 { splice(it, l, l.begin(), l.end() ); } \
1044 void splice(const iterator& it, name& l, const iterator& first) \
1045 { \
1046 iterator tmp = first; ++tmp; \
1047 if(it == first || it == tmp) return; \
1048 insert(it, *first); \
1049 l.erase(first); \
1050 } \
1051 void remove(const_reference v) \
1052 { DeleteObject((const_base_reference)v); } \
1053 void reverse() \
1054 { Reverse(); } \
1055 /* void swap(name& l) \
1056 { \
1057 { size_t t = m_count; m_count = l.m_count; l.m_count = t; } \
1058 { bool t = m_destroy; m_destroy = l.m_destroy; l.m_destroy = t; }\
1059 { wxNodeBase* t = m_nodeFirst; m_nodeFirst = l.m_nodeFirst; l.m_nodeFirst = t; }\
1060 { wxNodeBase* t = m_nodeLast; m_nodeLast = l.m_nodeLast; l.m_nodeLast = t; }\
1061 { wxKeyType t = m_keyType; m_keyType = l.m_keyType; l.m_keyType = t; }\
1062 } */ \
1063 }
1064
1065 #define WX_LIST_PTROP \
1066 pointer_type operator->() const \
1067 { return (pointer_type)m_node->GetDataPtr(); }
1068 #define WX_LIST_PTROP_NONE
1069
1070 #define WX_DECLARE_LIST_3(T, Tbase, name, nodetype, classexp) \
1071 WX_DECLARE_LIST_4(T, Tbase, name, nodetype, classexp, WX_LIST_PTROP_NONE)
1072 #define WX_DECLARE_LIST_PTR_3(T, Tbase, name, nodetype, classexp) \
1073 WX_DECLARE_LIST_4(T, Tbase, name, nodetype, classexp, WX_LIST_PTROP)
1074
1075 #define WX_DECLARE_LIST_2(elementtype, listname, nodename, classexp) \
1076 WX_DECLARE_LIST_3(elementtype, elementtype, listname, nodename, classexp)
1077 #define WX_DECLARE_LIST_PTR_2(elementtype, listname, nodename, classexp) \
1078 WX_DECLARE_LIST_PTR_3(elementtype, elementtype, listname, nodename, classexp)
1079
1080 #define WX_DECLARE_LIST(elementtype, listname) \
1081 typedef elementtype _WX_LIST_ITEM_TYPE_##listname; \
1082 WX_DECLARE_LIST_2(elementtype, listname, wx##listname##Node, class)
1083 #define WX_DECLARE_LIST_PTR(elementtype, listname) \
1084 typedef elementtype _WX_LIST_ITEM_TYPE_##listname; \
1085 WX_DECLARE_LIST_PTR_2(elementtype, listname, wx##listname##Node, class)
1086
1087 #define WX_DECLARE_LIST_WITH_DECL(elementtype, listname, decl) \
1088 typedef elementtype _WX_LIST_ITEM_TYPE_##listname; \
1089 WX_DECLARE_LIST_2(elementtype, listname, wx##listname##Node, decl)
1090
1091 #define WX_DECLARE_EXPORTED_LIST(elementtype, listname) \
1092 WX_DECLARE_LIST_WITH_DECL(elementtype, listname, class WXDLLIMPEXP_CORE)
1093
1094 #define WX_DECLARE_EXPORTED_LIST_PTR(elementtype, listname) \
1095 typedef elementtype _WX_LIST_ITEM_TYPE_##listname; \
1096 WX_DECLARE_LIST_PTR_2(elementtype, listname, wx##listname##Node, class WXDLLIMPEXP_CORE)
1097
1098 #define WX_DECLARE_USER_EXPORTED_LIST(elementtype, listname, usergoo) \
1099 typedef elementtype _WX_LIST_ITEM_TYPE_##listname; \
1100 WX_DECLARE_LIST_2(elementtype, listname, wx##listname##Node, class usergoo)
1101 #define WX_DECLARE_USER_EXPORTED_LIST_PTR(elementtype, listname, usergoo) \
1102 typedef elementtype _WX_LIST_ITEM_TYPE_##listname; \
1103 WX_DECLARE_LIST_PTR_2(elementtype, listname, wx##listname##Node, class usergoo)
1104
1105 // this macro must be inserted in your program after
1106 // #include "wx/listimpl.cpp"
1107 #define WX_DEFINE_LIST(name) "don't forget to include listimpl.cpp!"
1108
1109 #define WX_DEFINE_EXPORTED_LIST(name) WX_DEFINE_LIST(name)
1110 #define WX_DEFINE_USER_EXPORTED_LIST(name) WX_DEFINE_LIST(name)
1111
1112 #endif // !wxUSE_STL
1113
1114 // ============================================================================
1115 // now we can define classes 100% compatible with the old ones
1116 // ============================================================================
1117
1118 // ----------------------------------------------------------------------------
1119 // commonly used list classes
1120 // ----------------------------------------------------------------------------
1121
1122 #if defined(wxLIST_COMPATIBILITY)
1123
1124 // inline compatibility functions
1125
1126 #if !wxUSE_STL
1127
1128 // ----------------------------------------------------------------------------
1129 // wxNodeBase deprecated methods
1130 // ----------------------------------------------------------------------------
1131
1132 inline wxNode *wxNodeBase::Next() const { return (wxNode *)GetNext(); }
1133 inline wxNode *wxNodeBase::Previous() const { return (wxNode *)GetPrevious(); }
1134 inline wxObject *wxNodeBase::Data() const { return (wxObject *)GetData(); }
1135
1136 // ----------------------------------------------------------------------------
1137 // wxListBase deprecated methods
1138 // ----------------------------------------------------------------------------
1139
1140 inline int wxListBase::Number() const { return (int)GetCount(); }
1141 inline wxNode *wxListBase::First() const { return (wxNode *)GetFirst(); }
1142 inline wxNode *wxListBase::Last() const { return (wxNode *)GetLast(); }
1143 inline wxNode *wxListBase::Nth(size_t n) const { return (wxNode *)Item(n); }
1144 inline wxListBase::operator wxList&() const { return *(wxList*)this; }
1145
1146 #endif
1147
1148 // define this to make a lot of noise about use of the old wxList classes.
1149 //#define wxWARN_COMPAT_LIST_USE
1150
1151 // ----------------------------------------------------------------------------
1152 // wxList compatibility class: in fact, it's a list of wxObjects
1153 // ----------------------------------------------------------------------------
1154
1155 WX_DECLARE_LIST_2(wxObject, wxObjectList, wxObjectListNode,
1156 class WXDLLIMPEXP_BASE);
1157
1158 class WXDLLIMPEXP_BASE wxList : public wxObjectList
1159 {
1160 public:
1161 #if defined(wxWARN_COMPAT_LIST_USE) && !wxUSE_STL
1162 wxList() { };
1163 wxDEPRECATED( wxList(int key_type) );
1164 #elif !wxUSE_STL
1165 wxList(int key_type = wxKEY_NONE);
1166 #endif
1167
1168 // this destructor is required for Darwin
1169 ~wxList() { }
1170
1171 #if !wxUSE_STL
1172 wxList& operator=(const wxList& list)
1173 { if (&list != this) Assign(list); return *this; }
1174
1175 // compatibility methods
1176 void Sort(wxSortCompareFunction compfunc) { wxListBase::Sort(compfunc); }
1177 #endif
1178
1179 #if wxUSE_STL
1180 #else
1181 wxNode *Member(wxObject *object) const { return (wxNode *)Find(object); }
1182 #endif
1183 };
1184
1185 #if !wxUSE_STL
1186
1187 // -----------------------------------------------------------------------------
1188 // wxStringList class for compatibility with the old code
1189 // -----------------------------------------------------------------------------
1190 WX_DECLARE_LIST_2(wxChar, wxStringListBase, wxStringListNode, class WXDLLIMPEXP_BASE);
1191
1192 class WXDLLIMPEXP_BASE wxStringList : public wxStringListBase
1193 {
1194 public:
1195 // ctors and such
1196 // default
1197 #ifdef wxWARN_COMPAT_LIST_USE
1198 wxStringList();
1199 wxDEPRECATED( wxStringList(const wxChar *first ...) ); // FIXME-UTF8
1200 #else
1201 wxStringList();
1202 wxStringList(const wxChar *first ...); // FIXME-UTF8
1203 #endif
1204
1205 // copying the string list: the strings are copied, too (extremely
1206 // inefficient!)
1207 wxStringList(const wxStringList& other) : wxStringListBase() { DeleteContents(true); DoCopy(other); }
1208 wxStringList& operator=(const wxStringList& other)
1209 {
1210 if (&other != this)
1211 {
1212 Clear();
1213 DoCopy(other);
1214 }
1215 return *this;
1216 }
1217
1218 // operations
1219 // makes a copy of the string
1220 wxNode *Add(const wxChar *s);
1221
1222 // Append to beginning of list
1223 wxNode *Prepend(const wxChar *s);
1224
1225 bool Delete(const wxChar *s);
1226
1227 wxChar **ListToArray(bool new_copies = false) const;
1228 bool Member(const wxChar *s) const;
1229
1230 // alphabetic sort
1231 void Sort();
1232
1233 private:
1234 void DoCopy(const wxStringList&); // common part of copy ctor and operator=
1235 };
1236
1237 #else // if wxUSE_STL
1238
1239 WX_DECLARE_LIST_XO(wxString, wxStringListBase, class WXDLLIMPEXP_BASE);
1240
1241 class WXDLLIMPEXP_BASE wxStringList : public wxStringListBase
1242 {
1243 public:
1244 compatibility_iterator Append(wxChar* s)
1245 { wxString tmp = s; delete[] s; return wxStringListBase::Append(tmp); }
1246 compatibility_iterator Insert(wxChar* s)
1247 { wxString tmp = s; delete[] s; return wxStringListBase::Insert(tmp); }
1248 compatibility_iterator Insert(size_t pos, wxChar* s)
1249 {
1250 wxString tmp = s;
1251 delete[] s;
1252 return wxStringListBase::Insert(pos, tmp);
1253 }
1254 compatibility_iterator Add(const wxChar* s)
1255 { push_back(s); return GetLast(); }
1256 compatibility_iterator Prepend(const wxChar* s)
1257 { push_front(s); return GetFirst(); }
1258 };
1259
1260 #endif // wxUSE_STL
1261
1262 #endif // wxLIST_COMPATIBILITY
1263
1264 // delete all list elements
1265 //
1266 // NB: the class declaration of the list elements must be visible from the
1267 // place where you use this macro, otherwise the proper destructor may not
1268 // be called (a decent compiler should give a warning about it, but don't
1269 // count on it)!
1270 #define WX_CLEAR_LIST(type, list) \
1271 { \
1272 type::iterator it, en; \
1273 for( it = (list).begin(), en = (list).end(); it != en; ++it ) \
1274 delete *it; \
1275 (list).clear(); \
1276 }
1277
1278 #endif // _WX_LISTH__
wxWidgets (Impactor)