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1/*
2 * Copyright (C) 2007-2011 Xagasoft, All rights reserved.
3 *
4 * This file is part of the libbu++ library and is released under the
5 * terms of the license contained in the file LICENSE.
6 */
7
8#ifndef BU_OBJECT_SIGNALS_H
9#define BU_OBJECT_SIGNALS_H
10
11#include "bu/util.h"
12#include "bu/exceptionbase.h"
13
14namespace Bu
15{
16 subExceptionDecl( SignalException );
17 //
18 // 0 Parameters
19 //
20
21 template<typename ret>
22 class _Slot0
23 {
24 public:
25 _Slot0() { }
26 virtual ~_Slot0() { }
27
28 virtual ret operator()()=0;
29
30 virtual _Slot0<ret> *clone() const=0;
31 };
32
33 template<typename cls, typename ret>
34 class __Slot0 : public _Slot0<ret>
35 {
36 public:
37 __Slot0( cls *pCls, ret (cls::*pFnc)() ) :
38 pCls( pCls ), pFnc( pFnc ) { }
39 virtual ~__Slot0() { }
40
41 virtual ret operator()()
42 {
43
44 return (pCls->*pFnc)();
45 }
46
47 virtual _Slot0<ret> *clone() const
48 {
49 return new __Slot0<cls, ret>( pCls, pFnc );
50 }
51
52 private:
53 cls *pCls;
54 ret (cls::*pFnc)();
55 };
56
57 template<typename ret>
58 class __Slot0F : public _Slot0<ret>
59 {
60 public:
61 __Slot0F( ret (*pFnc)() ) :
62 pFnc( pFnc ) { }
63 virtual ~__Slot0F() { }
64
65 virtual ret operator()()
66 {
67 return (*pFnc)();
68 }
69
70 virtual _Slot0<ret> *clone() const
71 {
72 return new __Slot0F<ret>( pFnc );
73 }
74
75 private:
76 ret (*pFnc)();
77 };
78
79 template<typename ret>
80 class Signal0
81 {
82 public:
83 Signal0() : pCb( NULL ) { }
84 Signal0( _Slot0<ret> *pCb ) : pCb( pCb ) { }
85 Signal0( const Signal0<ret> &rSrc ) :
86 pCb( (rSrc.pCb)?(rSrc.pCb->clone()):(NULL) ) { }
87
88 virtual ~Signal0() { delete pCb; pCb = NULL; }
89
90 ret operator()()
91 {
92 if( !pCb ) throw SignalException("Uninitialized signal used.");
93 return (*pCb)();
94 }
95
96 bool isSet() const { return pCb != NULL; }
97 operator bool() const { return isSet(); }
98
99 Signal0<ret> &operator=( const Signal0<ret> &rhs )
100 {
101 pCb = rhs.pCb->clone();
102 return *this;
103 }
104
105 private:
106 _Slot0<ret> *pCb;
107 };
108
109 template<typename cls, typename ret>
110 Signal0<ret> slot( cls *pCls, ret (cls::*pFnc)() )
111 {
112 if( !pCls || !pFnc ) throw SignalException("NULL pointer in slot().");
113 return Signal0<ret>(
114 new __Slot0<cls, ret>( pCls, pFnc )
115 );
116 }
117
118 template<typename ret>
119 Signal0<ret> slot( ret (*pFnc)() )
120 {
121 if( !pFnc ) throw SignalException("NULL pointer in slot().");
122 return Signal0<ret>(
123 new __Slot0F<ret>( pFnc )
124 );
125 }
126
127 //
128 // 1 Parameter
129 //
130
131 template<typename ret, typename p1t>
132 class _Slot1
133 {
134 public:
135 _Slot1() { }
136 virtual ~_Slot1() { }
137
138 virtual ret operator()( p1t p1 )=0;
139
140 virtual _Slot1<ret, p1t> *clone() const=0;
141 };
142
143 template<typename cls, typename ret, typename p1t>
144 class __Slot1 : public _Slot1<ret, p1t>
145 {
146 public:
147 __Slot1( cls *pCls, ret (cls::*pFnc)( p1t ) ) :
148 pCls( pCls ), pFnc( pFnc ) { }
149 virtual ~__Slot1() { }
150
151 virtual ret operator()( p1t p1 )
152 {
153 return (pCls->*pFnc)( p1 );
154 }
155
156 virtual _Slot1<ret, p1t> *clone() const
157 {
158 return new __Slot1<cls, ret, p1t>( pCls, pFnc );
159 }
160
161 private:
162 cls *pCls;
163 ret (cls::*pFnc)( p1t );
164 };
165
166 template<typename ret, typename p1t>
167 class __Slot1F : public _Slot1<ret, p1t>
168 {
169 public:
170 __Slot1F( ret (*pFnc)( p1t ) ) :
171 pFnc( pFnc ) { }
172 virtual ~__Slot1F() { }
173
174 virtual ret operator()( p1t p1 )
175 {
176 return (*pFnc)( p1 );
177 }
178
179 virtual _Slot1<ret, p1t> *clone() const
180 {
181 return new __Slot1F<ret, p1t>( pFnc );
182 }
183
184 private:
185 ret (*pFnc)( p1t p1 );
186 };
187
188 template<typename ret, typename p1t>
189 class Signal1
190 {
191 public:
192 Signal1() : pCb( NULL ) { }
193 Signal1( _Slot1<ret, p1t> *pCb ) : pCb( pCb ) { }
194 Signal1( const Signal1<ret, p1t> &rSrc ) :
195 pCb( (rSrc.pCb)?(rSrc.pCb->clone()):(NULL) ) { }
196
197 virtual ~Signal1() { delete pCb; pCb = NULL; }
198
199 ret operator()( p1t p1 )
200 {
201 if( !pCb ) throw SignalException("Uninitialized signal used.");
202 return (*pCb)( p1 );
203 }
204
205 bool isSet() const { return pCb != NULL; }
206 operator bool() const { return isSet(); }
207
208 Signal1<ret, p1t> &operator=( const Signal1<ret, p1t> &rhs )
209 {
210 pCb = rhs.pCb->clone();
211 return *this;
212 }
213
214 private:
215 _Slot1<ret, p1t> *pCb;
216 };
217
218 template<typename cls, typename ret, typename p1t>
219 Signal1<ret, p1t> slot( cls *pCls, ret (cls::*pFnc)( p1t ) )
220 {
221 if( !pCls || !pFnc ) throw SignalException("NULL pointer in slot().");
222 return Signal1<ret, p1t>(
223 new __Slot1<cls, ret, p1t>( pCls, pFnc )
224 );
225 }
226
227 template<typename ret, typename p1t>
228 Signal1<ret, p1t> slot( ret (*pFnc)( p1t ) )
229 {
230 if( !pFnc ) throw SignalException("NULL pointer in slot().");
231 return Signal1<ret, p1t>(
232 new __Slot1F<ret, p1t>( pFnc )
233 );
234 }
235
236 //
237 // 2 Parameters
238 //
239
240 template<typename ret, typename p1t, typename p2t>
241 class _Slot2
242 {
243 public:
244 _Slot2() { }
245 virtual ~_Slot2() { }
246
247 virtual ret operator()( p1t p1, p2t p2 )=0;
248
249 virtual _Slot2<ret, p1t, p2t> *clone() const=0;
250 };
251
252 template<typename cls, typename ret, typename p1t, typename p2t>
253 class __Slot2 : public _Slot2<ret, p1t, p2t>
254 {
255 public:
256 __Slot2( cls *pCls, ret (cls::*pFnc)( p1t, p2t ) ) :
257 pCls( pCls ), pFnc( pFnc ) { }
258 virtual ~__Slot2() { }
259
260 virtual ret operator()( p1t p1, p2t p2 )
261 {
262 return (pCls->*pFnc)( p1, p2 );
263 }
264
265 virtual _Slot2<ret, p1t, p2t> *clone() const
266 {
267 return new __Slot2<cls, ret, p1t, p2t>( pCls, pFnc );
268 }
269
270 private:
271 cls *pCls;
272 ret (cls::*pFnc)( p1t, p2t );
273 };
274
275 template<typename ret, typename p1t, typename p2t>
276 class __Slot2F : public _Slot2<ret, p1t, p2t>
277 {
278 public:
279 __Slot2F( ret (*pFnc)( p1t, p2t ) ) :
280 pFnc( pFnc ) { }
281 virtual ~__Slot2F() { }
282
283 virtual ret operator()( p1t p1, p2t p2 )
284 {
285 return (*pFnc)( p1, p2 );
286 }
287
288 virtual _Slot2<ret, p1t, p2t> *clone() const
289 {
290 return new __Slot2F<ret, p1t, p2t>( pFnc );
291 }
292
293 private:
294 ret (*pFnc)( p1t, p2t );
295 };
296
297 template<typename ret, typename p1t, typename p2t>
298 class Signal2
299 {
300 public:
301 Signal2() : pCb( NULL ) { }
302 Signal2( _Slot2<ret, p1t, p2t> *pCb ) : pCb( pCb ) { }
303 Signal2( const Signal2<ret, p1t, p2t> &rSrc ) :
304 pCb( (rSrc.pCb)?(rSrc.pCb->clone()):(NULL) ) { }
305
306 virtual ~Signal2() { delete pCb; pCb = NULL; }
307
308 ret operator()( p1t p1, p2t p2 )
309 {
310 if( !pCb ) throw SignalException("Uninitialized signal used.");
311 return (*pCb)( p1, p2 );
312 }
313
314 bool isSet() const { return pCb != NULL; }
315 operator bool() const { return isSet(); }
316
317 Signal2<ret, p1t, p2t> &operator=( const Signal2<ret, p1t, p2t> &rhs )
318 {
319 pCb = rhs.pCb->clone();
320 return *this;
321 }
322
323 private:
324 _Slot2<ret, p1t, p2t> *pCb;
325 };
326
327 template<typename cls, typename ret, typename p1t, typename p2t>
328 Signal2<ret, p1t, p2t> slot( cls *pCls, ret (cls::*pFnc)( p1t, p2t ) )
329 {
330 if( !pCls || !pFnc ) throw SignalException("NULL pointer in slot().");
331 return Signal2<ret, p1t, p2t>(
332 new __Slot2<cls, ret, p1t, p2t>( pCls, pFnc )
333 );
334 }
335
336 template<typename ret, typename p1t, typename p2t>
337 Signal2<ret, p1t, p2t> slot( ret (*pFnc)( p1t, p2t ) )
338 {
339 if( !pFnc ) throw SignalException("NULL pointer in slot().");
340 return Signal2<ret, p1t, p2t>(
341 new __Slot2F<ret, p1t, p2t>( pFnc )
342 );
343 }
344
345 //
346 // 3 Parameters
347 //
348
349 template<typename ret, typename p1t, typename p2t, typename p3t>
350 class _Slot3
351 {
352 public:
353 _Slot3() { }
354 virtual ~_Slot3() { }
355
356 virtual ret operator()( p1t p1, p2t p2, p3t p3 )=0;
357
358 virtual _Slot3<ret, p1t, p2t, p3t> *clone() const=0;
359 };
360
361 template<typename cls, typename ret, typename p1t, typename p2t, typename p3t>
362 class __Slot3 : public _Slot3<ret, p1t, p2t, p3t>
363 {
364 public:
365 __Slot3( cls *pCls, ret (cls::*pFnc)( p1t, p2t, p3t ) ) :
366 pCls( pCls ), pFnc( pFnc ) { }
367 virtual ~__Slot3() { }
368
369 virtual ret operator()( p1t p1, p2t p2, p3t p3 )
370 {
371 return (pCls->*pFnc)( p1, p2, p3 );
372 }
373
374 virtual _Slot3<ret, p1t, p2t, p3t> *clone() const
375 {
376 return new __Slot3<cls, ret, p1t, p2t, p3t>( pCls, pFnc );
377 }
378
379 private:
380 cls *pCls;
381 ret (cls::*pFnc)( p1t, p2t, p3t );
382 };
383
384 template<typename ret, typename p1t, typename p2t, typename p3t>
385 class __Slot3F : public _Slot3<ret, p1t, p2t, p3t>
386 {
387 public:
388 __Slot3F( ret (*pFnc)( p1t, p2t, p3t ) ) :
389 pFnc( pFnc ) { }
390 virtual ~__Slot3F() { }
391
392 virtual ret operator()( p1t p1, p2t p2, p3t p3 )
393 {
394 return (*pFnc)( p1, p2, p3 );
395 }
396
397 virtual _Slot3<ret, p1t, p2t, p3t> *clone() const
398 {
399 return new __Slot3F<ret, p1t, p2t, p3t>( pFnc );
400 }
401
402 private:
403 ret (*pFnc)( p1t, p2t, p3t );
404 };
405
406 template<typename ret, typename p1t, typename p2t, typename p3t>
407 class Signal3
408 {
409 public:
410 Signal3() : pCb( NULL ) { }
411 Signal3( _Slot3<ret, p1t, p2t, p3t> *pCb ) : pCb( pCb ) { }
412 Signal3( const Signal3<ret, p1t, p2t, p3t> &rSrc ) :
413 pCb( (rSrc.pCb)?(rSrc.pCb->clone()):(NULL) ) { }
414
415 virtual ~Signal3() { delete pCb; pCb = NULL; }
416
417 ret operator()( p1t p1, p2t p2, p3t p3 )
418 {
419 if( !pCb ) throw SignalException("Uninitialized signal used.");
420 return (*pCb)( p1, p2, p3 );
421 }
422
423 bool isSet() const { return pCb != NULL; }
424 operator bool() const { return isSet(); }
425
426 Signal3<ret, p1t, p2t, p3t> &operator=( const Signal3<ret, p1t, p2t, p3t> &rhs )
427 {
428 pCb = rhs.pCb->clone();
429 return *this;
430 }
431
432 private:
433 _Slot3<ret, p1t, p2t, p3t> *pCb;
434 };
435
436 template<typename cls, typename ret, typename p1t, typename p2t, typename p3t>
437 Signal3<ret, p1t, p2t, p3t> slot( cls *pCls, ret (cls::*pFnc)( p1t, p2t, p3t ) )
438 {
439 if( !pCls || !pFnc ) throw SignalException("NULL pointer in slot().");
440 return Signal3<ret, p1t, p2t, p3t>(
441 new __Slot3<cls, ret, p1t, p2t, p3t>( pCls, pFnc )
442 );
443 }
444
445 template<typename ret, typename p1t, typename p2t, typename p3t>
446 Signal3<ret, p1t, p2t, p3t> slot( ret (*pFnc)( p1t, p2t, p3t ) )
447 {
448 if( !pFnc ) throw SignalException("NULL pointer in slot().");
449 return Signal3<ret, p1t, p2t, p3t>(
450 new __Slot3F<ret, p1t, p2t, p3t>( pFnc )
451 );
452 }
453
454 //
455 // 4 Parameters
456 //
457
458 template<typename ret, typename p1t, typename p2t, typename p3t, typename p4t>
459 class _Slot4
460 {
461 public:
462 _Slot4() { }
463 virtual ~_Slot4() { }
464
465 virtual ret operator()( p1t p1, p2t p2, p3t p3, p4t p4 )=0;
466
467 virtual _Slot4<ret, p1t, p2t, p3t, p4t> *clone() const=0;
468 };
469
470 template<typename cls, typename ret, typename p1t, typename p2t, typename p3t, typename p4t>
471 class __Slot4 : public _Slot4<ret, p1t, p2t, p3t, p4t>
472 {
473 public:
474 __Slot4( cls *pCls, ret (cls::*pFnc)( p1t, p2t, p3t, p4t ) ) :
475 pCls( pCls ), pFnc( pFnc ) { }
476 virtual ~__Slot4() { }
477
478 virtual ret operator()( p1t p1, p2t p2, p3t p3, p4t p4 )
479 {
480 return (pCls->*pFnc)( p1, p2, p3, p4 );
481 }
482
483 virtual _Slot4<ret, p1t, p2t, p3t, p4t> *clone() const
484 {
485 return new __Slot4<cls, ret, p1t, p2t, p3t, p4t>( pCls, pFnc );
486 }
487
488 private:
489 cls *pCls;
490 ret (cls::*pFnc)( p1t, p2t, p3t, p4t );
491 };
492
493 template<typename ret, typename p1t, typename p2t, typename p3t, typename p4t>
494 class __Slot4F : public _Slot4<ret, p1t, p2t, p3t, p4t>
495 {
496 public:
497 __Slot4F( ret (*pFnc)( p1t, p2t, p3t, p4t ) ) :
498 pFnc( pFnc ) { }
499 virtual ~__Slot4F() { }
500
501 virtual ret operator()( p1t p1, p2t p2, p3t p3, p4t p4 )
502 {
503 return (*pFnc)( p1, p2, p3, p4 );
504 }
505
506 virtual _Slot4<ret, p1t, p2t, p3t, p4t> *clone() const
507 {
508 return new __Slot4F<ret, p1t, p2t, p3t, p4t>( pFnc );
509 }
510
511 private:
512 ret (*pFnc)( p1t, p2t, p3t, p4t );
513 };
514
515 template<typename ret, typename p1t, typename p2t, typename p3t, typename p4t>
516 class Signal4
517 {
518 public:
519 Signal4() : pCb( NULL ) { }
520 Signal4( _Slot4<ret, p1t, p2t, p3t, p4t> *pCb ) : pCb( pCb ) { }
521 Signal4( const Signal4<ret, p1t, p2t, p3t, p4t> &rSrc ) :
522 pCb( (rSrc.pCb)?(rSrc.pCb->clone()):(NULL) ) { }
523
524 virtual ~Signal4() { delete pCb; pCb = NULL; }
525
526 ret operator()( p1t p1, p2t p2, p3t p3, p4t p4 )
527 {
528 if( !pCb ) throw SignalException("Uninitialized signal used.");
529 return (*pCb)( p1, p2, p3, p4 );
530 }
531
532 bool isSet() const { return pCb != NULL; }
533 operator bool() const { return isSet(); }
534
535 Signal4<ret, p1t, p2t, p3t, p4t> &operator=( const Signal4<ret, p1t, p2t, p3t, p4t> &rhs )
536 {
537 pCb = rhs.pCb->clone();
538 return *this;
539 }
540
541 private:
542 _Slot4<ret, p1t, p2t, p3t, p4t> *pCb;
543 };
544
545 template<typename cls, typename ret, typename p1t, typename p2t, typename p3t, typename p4t>
546 Signal4<ret, p1t, p2t, p3t, p4t> slot( cls *pCls, ret (cls::*pFnc)( p1t, p2t, p3t, p4t ) )
547 {
548 if( !pCls || !pFnc ) throw SignalException("NULL pointer in slot().");
549 return Signal4<ret, p1t, p2t, p3t, p4t>(
550 new __Slot4<cls, ret, p1t, p2t, p3t, p4t>( pCls, pFnc )
551 );
552 }
553
554 template<typename ret, typename p1t, typename p2t, typename p3t, typename p4t>
555 Signal4<ret, p1t, p2t, p3t, p4t> slot( ret (*pFnc)( p1t, p2t, p3t, p4t ) )
556 {
557 if( !pFnc ) throw SignalException("NULL pointer in slot().");
558 return Signal4<ret, p1t, p2t, p3t, p4t>(
559 new __Slot4F<ret, p1t, p2t, p3t, p4t>( pFnc )
560 );
561 }
562
563 //
564 // 5 Parameters
565 //
566
567 template<typename ret, typename p1t, typename p2t, typename p3t, typename p4t, typename p5t>
568 class _Slot5
569 {
570 public:
571 _Slot5() { }
572 virtual ~_Slot5() { }
573
574 virtual ret operator()( p1t p1, p2t p2, p3t p3, p4t p4, p5t p5 )=0;
575
576 virtual _Slot5<ret, p1t, p2t, p3t, p4t, p5t> *clone() const=0;
577 };
578
579 template<typename cls, typename ret, typename p1t, typename p2t, typename p3t, typename p4t, typename p5t>
580 class __Slot5 : public _Slot5<ret, p1t, p2t, p3t, p4t, p5t>
581 {
582 public:
583 __Slot5( cls *pCls, ret (cls::*pFnc)( p1t, p2t, p3t, p4t, p5t ) ) :
584 pCls( pCls ), pFnc( pFnc ) { }
585 virtual ~__Slot5() { }
586
587 virtual ret operator()( p1t p1, p2t p2, p3t p3, p4t p4, p5t p5 )
588 {
589 return (pCls->*pFnc)( p1, p2, p3, p4, p5 );
590 }
591
592 virtual _Slot5<ret, p1t, p2t, p3t, p4t, p5t> *clone() const
593 {
594 return new __Slot5<cls, ret, p1t, p2t, p3t, p4t, p5t>( pCls, pFnc );
595 }
596
597 private:
598 cls *pCls;
599 ret (cls::*pFnc)( p1t, p2t, p3t, p4t, p5t );
600 };
601
602 template<typename ret, typename p1t, typename p2t, typename p3t, typename p4t, typename p5t>
603 class __Slot5F : public _Slot5<ret, p1t, p2t, p3t, p4t, p5t>
604 {
605 public:
606 __Slot5F( ret (*pFnc)( p1t, p2t, p3t, p4t, p5t ) ) :
607 pFnc( pFnc ) { }
608 virtual ~__Slot5F() { }
609
610 virtual ret operator()( p1t p1, p2t p2, p3t p3, p4t p4, p5t p5 )
611 {
612 return (*pFnc)( p1, p2, p3, p4, p5 );
613 }
614
615 virtual _Slot5<ret, p1t, p2t, p3t, p4t, p5t> *clone() const
616 {
617 return new __Slot5F<ret, p1t, p2t, p3t, p4t, p5t>( pFnc );
618 }
619
620 private:
621 ret (*pFnc)( p1t, p2t, p3t, p4t, p5t );
622 };
623
624 template<typename ret, typename p1t, typename p2t, typename p3t, typename p4t, typename p5t>
625 class Signal5
626 {
627 public:
628 Signal5() : pCb( NULL ) { }
629 Signal5( _Slot5<ret, p1t, p2t, p3t, p4t, p5t> *pCb ) : pCb( pCb ) { }
630 Signal5( const Signal5<ret, p1t, p2t, p3t, p4t, p5t> &rSrc ) :
631 pCb( (rSrc.pCb)?(rSrc.pCb->clone()):(NULL) ) { }
632
633 virtual ~Signal5() { delete pCb; pCb = NULL; }
634
635 ret operator()( p1t p1, p2t p2, p3t p3, p4t p4, p5t p5 )
636 {
637 if( !pCb ) throw SignalException("Uninitialized signal used.");
638 return (*pCb)( p1, p2, p3, p4, p5 );
639 }
640
641 bool isSet() const { return pCb != NULL; }
642 operator bool() const { return isSet(); }
643
644 Signal5<ret, p1t, p2t, p3t, p4t, p5t> &operator=( const Signal5<ret, p1t, p2t, p3t, p4t, p5t> &rhs )
645 {
646 pCb = rhs.pCb->clone();
647 return *this;
648 }
649
650 private:
651 _Slot5<ret, p1t, p2t, p3t, p4t, p5t> *pCb;
652 };
653
654 template<typename cls, typename ret, typename p1t, typename p2t, typename p3t, typename p4t, typename p5t>
655 Signal5<ret, p1t, p2t, p3t, p4t, p5t> slot( cls *pCls, ret (cls::*pFnc)( p1t, p2t, p3t, p4t, p5t ) )
656 {
657 if( !pCls || !pFnc ) throw SignalException("NULL pointer in slot().");
658 return Signal5<ret, p1t, p2t, p3t, p4t, p5t>(
659 new __Slot5<cls, ret, p1t, p2t, p3t, p4t, p5t>( pCls, pFnc )
660 );
661 }
662
663 template<typename ret, typename p1t, typename p2t, typename p3t, typename p4t, typename p5t>
664 Signal5<ret, p1t, p2t, p3t, p4t, p5t> slot( ret (*pFnc)( p1t, p2t, p3t, p4t, p5t ) )
665 {
666 if( !pFnc ) throw SignalException("NULL pointer in slot().");
667 return Signal5<ret, p1t, p2t, p3t, p4t, p5t>(
668 new __Slot5F<ret, p1t, p2t, p3t, p4t, p5t>( pFnc )
669 );
670 }
671
672};
673
674#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 20:46:00 +0000