summaryrefslogtreecommitdiffstats
path: root/Mac/Tools/IDE/PyDebugger.py
blob: 22ab7a23c84db771c3dd92c60613194ee2f196a8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
import sys
import bdb
import types
import os

import W
import WASTEconst
import PyBrowser
import Qd
import Evt
import Lists
import MacOS
_filenames = {}

SIMPLE_TYPES = (
	types.NoneType,
	types.IntType,
	types.LongType,
	types.FloatType,
	types.ComplexType,
	types.StringType
)


class Debugger(bdb.Bdb):
	
	def __init__(self, title = 'Debugger'):
		bdb.Bdb.__init__(self)
		self.closed = 1
		self.title = title
		self.breaksviewer = None
		self.reset()
		self.tracing = 0
		self.tracingmonitortime = Evt.TickCount()
		self.editors = {}
		
		prefs = W.getapplication().getprefs()
		if prefs.debugger:
			for file, breaks in prefs.debugger.breaks.items():
				for b in breaks:
					self.set_break(file, b)
			self.bounds, self.horpanes, self.verpanes = prefs.debugger.windowsettings
			self.tracemagic = prefs.debugger.tracemagic
		else:
			self.breaks = {}
			self.horpanes = (0.4, 0.6)
			self.verpanes = (0.3, 0.35, 0.35)
			self.bounds = (600, 400)
			self.tracemagic = 0
		self.laststacksel = None
	
	def canonic(self, filename):
		# override: the provided canonic() method breaks our
		# file-less Untitled windows
		return filename
	
	def reset(self):
		self.currentframe = None
		self.file = None
		self.laststack = None
		self.reason = 'Not running'
		self.continuewithoutdebugger = 0
		bdb.Bdb.reset(self)
		self.forget()
	
	def start(self, bottomframe = None, running = 0):
		W.getapplication().DebuggerQuit = bdb.BdbQuit
		import Menu
		Menu.HiliteMenu(0)
		if self.closed:
			self.setupwidgets(self.title)
			self.closed = 0
		if not self.w.parent.debugger_quitting:
			self.w.select()
			raise W.AlertError, 'There is another debugger session busy.'
		self.reset()
		self.botframe = bottomframe
		if running:
			self.set_continue()
			self.reason = 'Running\xc9'
			self.setstate('running')
		else:
			self.set_step()
			self.reason = 'stopped'
			self.setstate('stopped')
		sys.settrace(self.trace_dispatch)
	
	def stop(self):
		self.set_quit()
		if self.w.parent:
			self.exit_mainloop()
			self.resetwidgets()
	
	def set_continue_without_debugger(self):
		sys.settrace(None)
		self.set_quit()
		self.clear_tracefuncs()
		self.continuewithoutdebugger = 1
		if hasattr(self, "w") and self.w.parent:
			self.exit_mainloop()
			self.resetwidgets()
	
	def clear_tracefuncs(self):
		try:
			raise 'spam'
		except:
			pass
		frame = sys.exc_traceback.tb_frame
		while frame is not None:
			del frame.f_trace
			frame = frame.f_back
	
	def postmortem(self, exc_type, exc_value, traceback):
		if self.closed:
			self.setupwidgets(self.title)
			self.closed = 0
		if not self.w.parent.debugger_quitting:
			raise W.AlertError, 'There is another debugger session busy.'
		self.reset()
		if traceback:
			self.botframe = traceback.tb_frame
			while traceback.tb_next <> None:
				traceback = traceback.tb_next
			frame = traceback.tb_frame
		else:
			self.botframe = None
			frame = None
		self.w.panes.bottom.buttons.killbutton.enable(1)
		self.reason = '(dead) ' + self.formatexception(exc_type, exc_value)
		self.w.select()
		self.setup(frame, traceback)
		self.setstate('dead')
		self.showstack(self.curindex)
		self.showframe(self.curindex)
	
	def setupwidgets(self, title):
		self.w = w = W.Window(self.bounds, title, minsize = (500, 300))
		
		w.panes = W.HorizontalPanes((8, 4, -8, -8), self.horpanes)
		
		w.panes.browserpanes = browserpanes = W.VerticalPanes(None, self.verpanes)
		
		browserpanes.stacklist = W.Group(None)
		browserpanes.stacklist.title = W.TextBox((4, 0, 0, 12), 'Stack')
		browserpanes.stacklist.stack = W.List((0, 16, 0, 0), callback = self.do_stack, flags = Lists.lOnlyOne)
		
		browserpanes.locals = W.Group(None)
		browserpanes.locals.title = W.TextBox((4, 0, 0, 12), 'Local variables')
		browserpanes.locals.browser = PyBrowser.BrowserWidget((0, 16, 0, 0))
		
		browserpanes.globals = W.Group(None)
		browserpanes.globals.title = W.TextBox((4, 0, 0, 12), 'Global variables')
		browserpanes.globals.browser = PyBrowser.BrowserWidget((0, 16, 0, 0))
		
		w.panes.bottom = bottom = W.Group(None)
		bottom.src = src = W.Group((0, 52, 0, 0))
		source = SourceViewer((1, 1, -15, -15), readonly = 1, debugger = self)
		src.optionsmenu = W.PopupMenu((-16, 0, 16, 16), [])
		src.optionsmenu.bind('<click>', self.makeoptionsmenu)
		
		src._barx = W.Scrollbar((0, -16, -15, 16), source.hscroll, max = 32767)
		src._bary = W.Scrollbar((-16, 15, 16, -15), source.vscroll, max = 32767)
		src.source = source
		src.frame = W.Frame((0, 0, -15, -15))
		
		bottom.tracingmonitor = TracingMonitor((0, 23, 6, 6))
		bottom.state = W.TextBox((12, 20, 0, 16), self.reason)
		
		bottom.srctitle = W.TextBox((12, 36, 0, 14))
		bottom.buttons = buttons = W.Group((12, 0, 0, 16))
		
		buttons.runbutton = W.Button((0, 0, 50, 16), "Run", self.do_run)
		buttons.stopbutton = W.Button((58, 0, 50, 16), "Stop", self.do_stop)
		buttons.killbutton = W.Button((116, 0, 50, 16), "Kill", self.do_kill)
		buttons.line = W.VerticalLine((173, 0, 0, 0))
		buttons.stepbutton = W.Button((181, 0, 50, 16), "Step", self.do_step)
		buttons.stepinbutton = W.Button((239, 0, 50, 16), "Step in", self.do_stepin)
		buttons.stepoutbutton = W.Button((297, 0, 50, 16), "Step out", self.do_stepout)
		
		w.bind('cmdr', buttons.runbutton.push)
		w.bind('cmd.', buttons.stopbutton.push)
		w.bind('cmdk', buttons.killbutton.push)
		w.bind('cmds', buttons.stepbutton.push)
		w.bind('cmdt', buttons.stepinbutton.push)
		w.bind('cmdu', buttons.stepoutbutton.push)
		
		w.bind('<close>', self.close)
		
		w.open()
		w.xxx___select(w.panes.bottom.src.source)
	
	def makeoptionsmenu(self):
		options = [('Clear breakpoints', self.w.panes.bottom.src.source.clearbreakpoints), 
				('Clear all breakpoints', self.clear_all_breaks),
				('Edit breakpoints\xc9', self.edit_breaks), '-',
				(self.tracemagic and 
					'Disable __magic__ tracing' or 'Enable __magic__ tracing', self.togglemagic)]
		self.w.panes.bottom.src.optionsmenu.set(options)
	
	def edit_breaks(self):
		if self.breaksviewer:
			self.breaksviewer.select()
		else:
			self.breaksviewer = BreakpointsViewer(self)
	
	def togglemagic(self):
		self.tracemagic = not self.tracemagic
	
	def setstate(self, state):
		self.w.panes.bottom.tracingmonitor.reset()
		self.w.panes.bottom.state.set(self.reason)
		buttons = self.w.panes.bottom.buttons
		if state == 'stopped':
			buttons.runbutton.enable(1)
			buttons.stopbutton.enable(0)
			buttons.killbutton.enable(1)
			buttons.stepbutton.enable(1)
			buttons.stepinbutton.enable(1)
			buttons.stepoutbutton.enable(1)
		elif state == 'running':
			buttons.runbutton.enable(0)
			buttons.stopbutton.enable(1)
			buttons.killbutton.enable(1)
			buttons.stepbutton.enable(0)
			buttons.stepinbutton.enable(0)
			buttons.stepoutbutton.enable(0)
		elif state == 'idle':
			buttons.runbutton.enable(0)
			buttons.stopbutton.enable(0)
			buttons.killbutton.enable(0)
			buttons.stepbutton.enable(0)
			buttons.stepinbutton.enable(0)
			buttons.stepoutbutton.enable(0)
		elif state == 'dead':
			buttons.runbutton.enable(0)
			buttons.stopbutton.enable(0)
			buttons.killbutton.enable(1)
			buttons.stepbutton.enable(0)
			buttons.stepinbutton.enable(0)
			buttons.stepoutbutton.enable(0)
		else:
			print 'unknown state:', state
	
	def resetwidgets(self):
		self.reason = ''
		self.w.panes.bottom.srctitle.set('')
		self.w.panes.bottom.src.source.set('')
		self.w.panes.browserpanes.stacklist.stack.set([])
		self.w.panes.browserpanes.locals.browser.set({})
		self.w.panes.browserpanes.globals.browser.set({})
		self.setstate('idle')
	
	# W callbacks
	
	def close(self):
		self.set_quit()
		self.exit_mainloop()
		self.closed = 1
		
		self.unregister_editor(self.w.panes.bottom.src.source, 
				self.w.panes.bottom.src.source.file)
		self.horpanes = self.w.panes.getpanesizes()
		self.verpanes = self.w.panes.browserpanes.getpanesizes()
		self.bounds = self.w.getbounds()
		prefs = W.getapplication().getprefs()
		prefs.debugger.breaks = self.breaks
		prefs.debugger.windowsettings = self.bounds, self.horpanes, self.verpanes
		prefs.debugger.tracemagic = self.tracemagic
		prefs.save()
	
	# stack list callback
	
	def do_stack(self, isdbl):
		sel = self.w.panes.browserpanes.stacklist.stack.getselection()
		if isdbl:
			if sel:
				frame, lineno = self.stack[sel[0] + 1]
				filename = frame.f_code.co_filename
				editor = self.w._parentwindow.parent.openscript(filename, lineno)
				if self.breaks.has_key(filename):
					editor.showbreakpoints(1)
		else:
			if sel and sel <> self.laststacksel:
				self.showframe(sel[0] + 1)
			self.laststacksel = sel
	
	def geteditor(self, filename):
		if filename[:1] == '<' and filename[-1:] == '>':
			editor = W.getapplication().getscript(filename[1:-1])
		else:
			editor = W.getapplication().getscript(filename)
		return editor
	
	# button callbacks
	
	def do_run(self):
		self.running()
		self.set_continue()
		self.exit_mainloop()
	
	def do_stop(self):
		self.set_step()
	
	def do_kill(self):
		self.set_quit()
		self.exit_mainloop()
		self.resetwidgets()
	
	def do_step(self):
		self.running()
		self.set_next(self.curframe)
		self.exit_mainloop()
	
	def do_stepin(self):
		self.running()
		self.set_step()
		self.exit_mainloop()
	
	def do_stepout(self):
		self.running()
		self.set_return(self.curframe)
		self.exit_mainloop()
	
	def running(self):
		W.SetCursor('watch')
		self.reason = 'Running\xc9'
		self.setstate('running')
		#self.w.panes.bottom.src.source.set('')
		#self.w.panes.browserpanes.stacklist.stack.set([])
		#self.w.panes.browserpanes.locals.browser.set({})
		#self.w.panes.browserpanes.globals.browser.set({})
	
	def exit_mainloop(self):
		self.w.parent.debugger_quitting = 1
	
	#
	
	def showframe(self, stackindex):
		(frame, lineno) = self.stack[stackindex]
		W.SetCursor('watch')
		filename = frame.f_code.co_filename
		if filename <> self.file:
			editor = self.geteditor(filename)
			if editor:
				self.w.panes.bottom.src.source.set(editor.get(), filename)
			else:
				try:
					f = open(filename, 'rb')
					data = f.read()
					f.close()
				except IOError:
					if filename[-3:] == '.py':
						import imp
						modname = os.path.basename(filename)[:-3]
						try:
							f, filename, (suff, mode, dummy) = imp.find_module(modname)
						except ImportError:
							self.w.panes.bottom.src.source.set("can't find file")
						else:
							if f:
								f.close()
							if f and suff == '.py':
								f = open(filename, 'rb')
								data = f.read()
								f.close()
								self.w.panes.bottom.src.source.set(data, filename)
							else:
								self.w.panes.bottom.src.source.set("can't find file")
					else:
						self.w.panes.bottom.src.source.set("can't find file")
				else:
					self.w.panes.bottom.src.source.set(data, filename)
			self.file = filename
		self.w.panes.bottom.srctitle.set('Source: ' + filename + ((lineno > 0) and (' (line %d)' % lineno) or ' '))
		self.goto_line(lineno)
		self.lineno = lineno
		self.showvars((frame, lineno))
	
	def showvars(self, (frame, lineno)):
		if frame.f_locals is not frame.f_globals:
			locals = frame.f_locals
		else:
			locals = {'Same as Globals':''}
		filteredlocals = {}
		for key, value in locals.items():
			# empty key is magic for Python 1.4; '.' is magic for 1.5...
			if not key or key[0] <> '.':
				filteredlocals[key] = value
		self.w.panes.browserpanes.locals.browser.set(filteredlocals)
		self.w.panes.browserpanes.globals.browser.set(frame.f_globals)
	
	def showstack(self, stackindex):
		stack = []
		for frame, lineno in self.stack[1:]:
			filename = frame.f_code.co_filename
			try:
				filename = _filenames[filename]
			except KeyError:
				if filename[:1] + filename[-1:] <> '<>':
					filename = os.path.basename(filename)
				_filenames[frame.f_code.co_filename] = filename
			funcname = frame.f_code.co_name
			if funcname == '?':
				funcname = '<toplevel>'
			stack.append(filename + ': ' + funcname)
		if stack <> self.laststack:
			self.w.panes.browserpanes.stacklist.stack.set(stack)
			self.laststack = stack
		sel = [stackindex - 1]
		self.w.panes.browserpanes.stacklist.stack.setselection(sel)
		self.laststacksel = sel
	
	def goto_line(self, lineno):
		if lineno > 0:
			self.w.panes.bottom.src.source.selectline(lineno - 1)
		else:
			self.w.panes.bottom.src.source.setselection(0, 0)
	
	# bdb entry points
	
#	def user_call(self, frame, argument_list):
#		self.reason = 'Calling'
#		self.interaction(frame, None)
	
	def user_line(self, frame):
		# This function is called when we stop or break at this line
		self.reason = 'Stopped'
		self.interaction(frame, None)
	
	def user_return(self, frame, return_value):
		# This function is called when a return trap is set here
		fname = frame.f_code.co_name
		if fname <> '?':
			self.reason = 'Returning from %s()' % frame.f_code.co_name
			frame.f_locals['__return__'] = return_value
		elif frame.f_back is self.botframe:
			self.reason = 'Done'
		else:
			self.reason = 'Returning'
		self.interaction(frame, None, 1)
	
	def user_exception(self, frame, (exc_type, exc_value, exc_traceback)):
		# This function is called when we stop or break at this line
		self.reason = self.formatexception(exc_type, exc_value)
		self.interaction(frame, exc_traceback)
	
	def formatexception(self, exc_type, exc_value):
		if exc_type == SyntaxError:
			try:
				value, (filename, lineno, charno, line) = exc_value
			except:
				pass
			else:
				return str(exc_type) + ': ' + str(value)
		if type(exc_type) == types.ClassType:
			nice = exc_type.__name__
		else:
			nice = str(exc_type)
		value = str(exc_value)
		if exc_value and value:
			nice = nice + ": " + value
		return nice
	
	def forget(self):
		self.stack = []
		self.curindex = 0
		self.curframe = None
	
	def setup(self, f, t, isreturning = 0):
		self.forget()
		self.stack, self.curindex = self.get_stack(f, t)
		self.curframe = self.stack[self.curindex - isreturning][0]
	
	def interaction(self, frame, traceback, isreturning = 0):
		saveport = Qd.GetPort()
		self.w.select()
		try:
			self.setup(frame, traceback, isreturning)
			self.setstate('stopped')
			stackindex = self.curindex
			if isreturning:
				if frame.f_back is not self.botframe:
					stackindex = stackindex - 1
			self.showstack(stackindex)
			self.showframe(stackindex)
			self.w.parent.debugger_mainloop()
			self.forget()
		finally:
			Qd.SetPort(saveport)
	
	# bdb customization
	
	def trace_dispatch(self, frame, event, arg, TickCount = Evt.TickCount):
		if TickCount() - self.tracingmonitortime > 15:
			self.tracingmonitortime = TickCount()
			self.w.panes.bottom.tracingmonitor.toggle()
		try:
			try:
				MacOS.EnableAppswitch(0)
				if self.quitting:
					# returning None is not enough, a former BdbQuit exception
					# might have been eaten by the print statement
					raise bdb.BdbQuit
				if event == 'line':
					return self.dispatch_line(frame)
				if event == 'call':
					return self.dispatch_call(frame, arg)
				if event == 'return':
					return self.dispatch_return(frame, arg)
				if event == 'exception':
					return self.dispatch_exception(frame, arg)
				print 'bdb.Bdb.dispatch: unknown debugging event:', `event`
				return self.trace_dispatch
			finally:
				MacOS.EnableAppswitch(-1)
		except KeyboardInterrupt:
			self.set_step()
			return self.trace_dispatch
		except bdb.BdbQuit:
			if self.continuewithoutdebugger:
				self.clear_tracefuncs()
				return
			else:
				raise bdb.BdbQuit
		except:
			print 'XXX Exception during debugger interaction.', \
					self.formatexception(sys.exc_type, sys.exc_value)
			import traceback
			traceback.print_exc()
			return self.trace_dispatch
	
	def dispatch_call(self, frame, arg):
		if not self.tracemagic and \
				frame.f_code.co_name[:2] == '__' == frame.f_code.co_name[-2:] and \
				frame.f_code.co_name <> '__init__':
			return
		if self.botframe is None:
			# First call of dispatch since reset()
			self.botframe = frame.f_back	# xxx !!! added f_back
			return self.trace_dispatch
		if not (self.stop_here(frame) or self.break_anywhere(frame)):
			# No need to trace this function
			return # None
		self.user_call(frame, arg)
		if self.quitting:
			raise bdb.BdbQuit
		return self.trace_dispatch
	
	def set_continue(self):
		# Don't stop except at breakpoints or when finished
		self.stopframe = self.botframe
		self.returnframe = None
		self.quitting = 0
		# unlike in bdb/pdb, there's a chance that breakpoints change 
		# *while* a program (this program ;-) is running. It's actually quite likely.
		# So we don't delete frame.f_trace until the bottom frame if there are no breakpoints.
	
	def set_break(self, filename, lineno):
		if not self.breaks.has_key(filename):
			self.breaks[filename] = []
		list = self.breaks[filename]
		if lineno in list:
			return 'There is already a breakpoint there!'
		list.append(lineno)
		list.sort()	# I want to keep them neatly sorted; easier for drawing
		if hasattr(bdb, "Breakpoint"):
			# 1.5.2b1 specific
			bp = bdb.Breakpoint(filename, lineno, 0, None)
		self.update_breaks(filename)
	
	def clear_break(self, filename, lineno):
		bdb.Bdb.clear_break(self, filename, lineno)
		self.update_breaks(filename)
	
	def clear_all_file_breaks(self, filename):
		bdb.Bdb.clear_all_file_breaks(self, filename)
		self.update_breaks(filename)
	
	def clear_all_breaks(self):
		bdb.Bdb.clear_all_breaks(self)
		for editors in self.editors.values():
			for editor in editors:
				editor.drawbreakpoints()
	
	# special
	
	def toggle_break(self, filename, lineno):
		if self.get_break(filename, lineno):
			self.clear_break(filename, lineno)
		else:
			self.set_break(filename, lineno)
	
	def clear_breaks_above(self, filename, above):
		if not self.breaks.has_key(filename):
			return 'There are no breakpoints in that file!'
		for lineno in self.breaks[filename][:]:
			if lineno > above:
				self.breaks[filename].remove(lineno)
		if not self.breaks[filename]:
			del self.breaks[filename]
	
	# editor stuff
	
	def update_breaks(self, filename):
		if self.breaksviewer:
			self.breaksviewer.update()
		if self.editors.has_key(filename):
			for editor in self.editors[filename]:
				if editor._debugger:	# XXX
					editor.drawbreakpoints()
				else:
					print 'xxx dead editor!'
	
	def update_allbreaks(self):
		if self.breaksviewer:
			self.breaksviewer.update()
		for filename in self.breaks.keys():
			if self.editors.has_key(filename):
				for editor in self.editors[filename]:
					if editor._debugger:	# XXX
						editor.drawbreakpoints()
					else:
						print 'xxx dead editor!'
	
	def register_editor(self, editor, filename):
		if not filename:
			return
		if not self.editors.has_key(filename):
			self.editors[filename] = [editor]
		elif editor not in self.editors[filename]:
			self.editors[filename].append(editor)
	
	def unregister_editor(self, editor, filename):
		if not filename:
			return
		try:
			self.editors[filename].remove(editor)
			if not self.editors[filename]:
				del self.editors[filename]
				# if this was an untitled window, clear the breaks.
				if filename[:1] == '<' and filename[-1:] == '>' and \
						self.breaks.has_key(filename):
					self.clear_all_file_breaks(filename)
		except (KeyError, ValueError):
			pass
		

class SourceViewer(W.PyEditor):
	
	def __init__(self, *args, **kwargs):
		apply(W.PyEditor.__init__, (self,) + args, kwargs)
		self.bind('<click>', self.clickintercept)
	
	def clickintercept(self, point, modifiers):
		if self._parentwindow._currentwidget <> self and not self.pt_in_breaks(point):
			self._parentwindow.xxx___select(self)
			return 1
	
	def _getviewrect(self):
		l, t, r, b = self._bounds
		if self._debugger:
			return (l + 12, t + 2, r - 1, b - 2)
		else:
			return (l + 5, t + 2, r - 1, b - 2)
	
	def select(self, onoff, isclick = 0):
		if W.SelectableWidget.select(self, onoff):
			return
		self.SetPort()
		#if onoff:
		#	self.ted.WEActivate()
		#else:
		#	self.ted.WEDeactivate()
		self.drawselframe(onoff)
	
	def drawselframe(self, onoff):
		pass


class BreakpointsViewer:
	
	def __init__(self, debugger):
		self.debugger = debugger
		import Lists
		self.w = W.Window((300, 250), 'Breakpoints', minsize = (200, 200))
		self.w.panes = W.HorizontalPanes((8, 8, -8, -32), (0.3, 0.7))
		self.w.panes.files = W.List(None, callback = self.filehit)		#, flags = Lists.lOnlyOne)
		self.w.panes.gr = W.Group(None)
		self.w.panes.gr.breaks = W.List((0, 0, -130, 0), callback = self.linehit)	#, flags = Lists.lOnlyOne)
		self.w.panes.gr.openbutton = W.Button((-80, 4, 0, 16), 'View\xc9', self.openbuttonhit)
		self.w.panes.gr.deletebutton = W.Button((-80, 28, 0, 16), 'Delete', self.deletebuttonhit)
		
		self.w.bind('<close>', self.close)
		self.w.bind('backspace', self.w.panes.gr.deletebutton.push)
		
		self.setup()
		self.w.open()
		self.w.panes.gr.openbutton.enable(0)
		self.w.panes.gr.deletebutton.enable(0)
		self.curfile = None
	
	def deletebuttonhit(self):
		if self.w._currentwidget == self.w.panes.files:
			self.del_filename()
		else:
			self.del_number()
		self.checkbuttons()
	
	def del_number(self):
		if self.curfile is None:
			return
		sel = self.w.panes.gr.breaks.getselectedobjects()
		for lineno in sel:
			self.debugger.clear_break(self.curfile, lineno)
	
	def del_filename(self):
		sel = self.w.panes.files.getselectedobjects()
		for filename in sel:
			self.debugger.clear_all_file_breaks(filename)
		self.debugger.update_allbreaks()
	
	def setup(self):
		files = self.debugger.breaks.keys()
		files.sort()
		self.w.panes.files.set(files)
	
	def close(self):
		self.debugger.breaksviewer = None
		self.debugger = None
	
	def update(self):
		sel = self.w.panes.files.getselectedobjects()
		self.setup()
		self.w.panes.files.setselectedobjects(sel)
		sel = self.w.panes.files.getselection()
		if len(sel) == 0 and self.curfile:
			self.w.panes.files.setselectedobjects([self.curfile])
		self.filehit(0)
	
	def select(self):
		self.w.select()
	
	def selectfile(self, file):
		self.w.panes.files.setselectedobjects([file])
		self.filehit(0)			
	
	def openbuttonhit(self):
		self.filehit(1)
	
	def filehit(self, isdbl):
		sel = self.w.panes.files.getselectedobjects()
		if isdbl:
			for filename in sel:
				lineno = None
				if filename == self.curfile:
					linesel = self.w.panes.gr.breaks.getselectedobjects()
					if linesel:
						lineno = linesel[-1]
					elif self.w.panes.gr.breaks:
						lineno = self.w.panes.gr.breaks[0]
				editor = self.w._parentwindow.parent.openscript(filename, lineno)
				editor.showbreakpoints(1)
			return
		if len(sel) == 1:
			file = sel[0]
			filebreaks = self.debugger.breaks[file][:]
			if self.curfile == file:
				linesel = self.w.panes.gr.breaks.getselectedobjects()
			self.w.panes.gr.breaks.set(filebreaks)
			if self.curfile == file:
				self.w.panes.gr.breaks.setselectedobjects(linesel)
			self.curfile = file
		else:
			if len(sel) <> 0:
				self.curfile = None
			self.w.panes.gr.breaks.set([])
		self.checkbuttons()
	
	def linehit(self, isdbl):
		if isdbl:
			files = self.w.panes.files.getselectedobjects()
			if len(files) <> 1:
				return
			filename = files[0]
			linenos = self.w.panes.gr.breaks.getselectedobjects()
			if not linenos:
				return
			lineno = linenos[-1]
			editor = self.w._parentwindow.parent.openscript(filename, lineno)
			editor.showbreakpoints(1)
		self.checkbuttons()
	
	def checkbuttons(self):
		if self.w.panes.files.getselection():
			self.w.panes.gr.openbutton.enable(1)
			self.w._parentwindow.setdefaultbutton(self.w.panes.gr.openbutton)
			if self.w._currentwidget == self.w.panes.files:
				if self.w.panes.files.getselection():
					self.w.panes.gr.deletebutton.enable(1)
				else:
					self.w.panes.gr.deletebutton.enable(0)
			else:
				if self.w.panes.gr.breaks.getselection():
					self.w.panes.gr.deletebutton.enable(1)
				else:
					self.w.panes.gr.deletebutton.enable(0)
		else:
			self.w.panes.gr.openbutton.enable(0)
			self.w.panes.gr.deletebutton.enable(0)


class TracingMonitor(W.Widget):
	
	def __init__(self, *args, **kwargs):
		apply(W.Widget.__init__, (self,) + args, kwargs)
		self.state = 0
	
	def toggle(self):
		if hasattr(self, "_parentwindow") and self._parentwindow is not None:
			self.state = self.state % 2 + 1
			port = Qd.GetPort()
			self.SetPort()
			self.draw()
			Qd.SetPort(port)
	
	def reset(self):
		if self._parentwindow:
			self.state = 0
			port = Qd.GetPort()
			self.SetPort()
			self.draw()
			Qd.SetPort(port)
	
	def draw(self, visRgn = None):
		if self.state == 2:
			Qd.PaintOval(self._bounds)
		else:
			Qd.EraseOval(self._bounds)


# convenience funcs

def postmortem(exc_type, exc_value, tb):
	d = getdebugger()
	d.postmortem(exc_type, exc_value, tb)

def start(bottomframe = None):
	d = getdebugger()
	d.start(bottomframe)

def startfromhere():
	d = getdebugger()
	try:
		raise 'spam'
	except:
		frame = sys.exc_traceback.tb_frame.f_back
	d.start(frame)

def startfrombottom():
	d = getdebugger()
	d.start(_getbottomframe(), 1)

def stop():
	d = getdebugger()
	d.stop()

def cont():
	sys.settrace(None)
	d = getdebugger()
	d.set_continue_without_debugger()

def _getbottomframe():
	try:
		raise 'spam'
	except:
		pass
	frame = sys.exc_traceback.tb_frame
	while 1:
		if frame.f_code.co_name == 'mainloop' or frame.f_back is None:
			break
		frame = frame.f_back
	return frame

_debugger = None

def getdebugger():
	if not __debug__:
		raise W.AlertError, "Can't debug in \"Optimize bytecode\" mode.\r(see \"Default startup options\" in EditPythonPreferences)"
	global _debugger
	if _debugger is None:
		_debugger = Debugger()
	return _debugger