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Set foreground colour when drawing items in the VListBox
[wxWidgets.git] / wxPython / wx / lib / maskednumctrl.py
1 #----------------------------------------------------------------------------
2 # Name: wxPython.lib.maskednumctrl.py
3 # Author: Will Sadkin
4 # Created: 09/06/2003
5 # Copyright: (c) 2003 by Will Sadkin
6 # RCS-ID: $Id$
7 # License: wxWindows license
8 #----------------------------------------------------------------------------
9 # NOTE:
10 # This was written to provide a numeric edit control for wxPython that
11 # does things like right-insert (like a calculator), and does grouping, etc.
12 # (ie. the features of MaskedTextCtrl), but allows Get/Set of numeric
13 # values, rather than text.
14 #
15 # MaskedNumCtrl permits integer, and floating point values to be set
16 # retrieved or set via .GetValue() and .SetValue() (type chosen based on
17 # fraction width, and provides an EVT_MASKEDNUM() event function for trapping
18 # changes to the control.
19 #
20 # It supports negative numbers as well as the naturals, and has the option
21 # of not permitting leading zeros or an empty control; if an empty value is
22 # not allowed, attempting to delete the contents of the control will result
23 # in a (selected) value of zero, thus preserving a legitimate numeric value.
24 # Similarly, replacing the contents of the control with '-' will result in
25 # a selected (absolute) value of -1.
26 #
27 # MaskedNumCtrl also supports range limits, with the option of either
28 # enforcing them or simply coloring the text of the control if the limits
29 # are exceeded.
30 #
31 # MaskedNumCtrl is intended to support fixed-point numeric entry, and
32 # is derived from MaskedTextCtrl. As such, it supports a limited range
33 # of values to comply with a fixed-width entry mask.
34 #----------------------------------------------------------------------------
35 # 12/09/2003 - Jeff Grimmett (grimmtooth@softhome.net)
36 #
37 # o Updated for wx namespace
38 #
39 # 12/20/2003 - Jeff Grimmett (grimmtooth@softhome.net)
40 #
41 # o wxMaskedEditMixin -> MaskedEditMixin
42 # o wxMaskedTextCtrl -> MaskedTextCtrl
43 # o wxMaskedNumNumberUpdatedEvent -> MaskedNumNumberUpdatedEvent
44 # o wxMaskedNumCtrl -> MaskedNumCtrl
45 #
46
47 """<html><body>
48 <P>
49 <B>MaskedNumCtrl:</B>
50 <UL>
51 <LI>allows you to get and set integer or floating point numbers as value,</LI>
52 <LI>provides bounds support and optional value limiting,</LI>
53 <LI>has the right-insert input style that MaskedTextCtrl supports,</LI>
54 <LI>provides optional automatic grouping, sign control and format, grouping and decimal
55 character selection, etc. etc.</LI>
56 </UL>
57 <P>
58 Being derived from MaskedTextCtrl, the control only allows
59 fixed-point notation. That is, it has a fixed (though reconfigurable)
60 maximum width for the integer portion and optional fixed width
61 fractional portion.
62 <P>
63 Here's the API:
64 <DL><PRE>
65 <B>MaskedNumCtrl</B>(
66 parent, id = -1,
67 <B>value</B> = 0,
68 pos = wxDefaultPosition,
69 size = wxDefaultSize,
70 style = 0,
71 validator = wxDefaultValidator,
72 name = "maskednumber",
73 <B>integerWidth</B> = 10,
74 <B>fractionWidth</B> = 0,
75 <B>allowNone</B> = False,
76 <B>allowNegative</B> = True,
77 <B>useParensForNegatives</B> = False,
78 <B>groupDigits</B> = False,
79 <B>groupChar</B> = ',',
80 <B>decimalChar</B> = '.',
81 <B>min</B> = None,
82 <B>max</B> = None,
83 <B>limited</B> = False,
84 <B>selectOnEntry</b> = True,
85 <B>foregroundColour</B> = "Black",
86 <B>signedForegroundColour</B> = "Red",
87 <B>emptyBackgroundColour</B> = "White",
88 <B>validBackgroundColour</B> = "White",
89 <B>invalidBackgroundColour</B> = "Yellow",
90 )
91 </PRE>
92 <UL>
93 <DT><B>value</B>
94 <DD>If no initial value is set, the default will be zero, or
95 the minimum value, if specified. If an illegal string is specified,
96 a ValueError will result. (You can always later set the initial
97 value with SetValue() after instantiation of the control.)
98 <BR>
99 <DL><B>integerWidth</B>
100 <DD>Indicates how many places to the right of any decimal point
101 should be allowed in the control. This will, perforce, limit
102 the size of the values that can be entered. This number need
103 not include space for grouping characters or the sign, if either
104 of these options are enabled, as the resulting underlying
105 mask is automatically by the control. The default of 10
106 will allow any 32 bit integer value. The minimum value
107 for integerWidth is 1.
108 <BR>
109 <DL><B>fractionWidth</B>
110 <DD>Indicates how many decimal places to show for numeric value.
111 If default (0), then the control will display and return only
112 integer or long values.
113 <BR>
114 <DT><B>allowNone</B>
115 <DD>Boolean indicating whether or not the control is allowed to be
116 empty, representing a value of None for the control.
117 <BR>
118 <DT><B>allowNegative</B>
119 <DD>Boolean indicating whether or not control is allowed to hold
120 negative numbers.
121 <BR>
122 <DT><B>useParensForNegatives</B>
123 <DD>If true, this will cause negative numbers to be displayed with ()s
124 rather than -, (although '-' will still trigger a negative number.)
125 <BR>
126 <DT><B>groupDigits</B>
127 <DD>Indicates whether or not grouping characters should be allowed and/or
128 inserted when leaving the control or the decimal character is entered.
129 <BR>
130 <DT><B>groupChar</B>
131 <DD>What grouping character will be used if allowed. (By default ',')
132 <BR>
133 <DT><B>decimalChar</B>
134 <DD>If fractionWidth is > 0, what character will be used to represent
135 the decimal point. (By default '.')
136 <BR>
137 <DL><B>min</B>
138 <DD>The minimum value that the control should allow. This can be also be
139 adjusted with SetMin(). If the control is not limited, any value
140 below this bound will result in a background colored with the current
141 invalidBackgroundColour. If the min specified will not fit into the
142 control, the min setting will be ignored.
143 <BR>
144 <DT><B>max</B>
145 <DD>The maximum value that the control should allow. This can be
146 adjusted with SetMax(). If the control is not limited, any value
147 above this bound will result in a background colored with the current
148 invalidBackgroundColour. If the max specified will not fit into the
149 control, the max setting will be ignored.
150 <BR>
151 <DT><B>limited</B>
152 <DD>Boolean indicating whether the control prevents values from
153 exceeding the currently set minimum and maximum values (bounds).
154 If False and bounds are set, out-of-bounds values will
155 result in a background colored with the current invalidBackgroundColour.
156 <BR>
157 <DT><B>selectOnEntry</B>
158 <DD>Boolean indicating whether or not the value in each field of the
159 control should be automatically selected (for replacement) when
160 that field is entered, either by cursor movement or tabbing.
161 This can be desirable when using these controls for rapid data entry.
162 <BR>
163 <DT><B>foregroundColour</B>
164 <DD>Color value used for positive values of the control.
165 <BR>
166 <DT><B>signedForegroundColour</B>
167 <DD>Color value used for negative values of the control.
168 <BR>
169 <DT><B>emptyBackgroundColour</B>
170 <DD>What background color to use when the control is considered
171 "empty." (allow_none must be set to trigger this behavior.)
172 <BR>
173 <DT><B>validBackgroundColour</B>
174 <DD>What background color to use when the control value is
175 considered valid.
176 <BR>
177 <DT><B>invalidBackgroundColour</B>
178 <DD>Color value used for illegal values or values out-of-bounds of the
179 control when the bounds are set but the control is not limited.
180 </UL>
181 <BR>
182 <BR>
183 <DT><B>EVT_MASKEDNUM(win, id, func)</B>
184 <DD>Respond to a wxEVT_COMMAND_MASKED_NUMBER_UPDATED event, generated when
185 the value changes. Notice that this event will always be sent when the
186 control's contents changes - whether this is due to user input or
187 comes from the program itself (for example, if SetValue() is called.)
188 <BR>
189 <BR>
190 <DT><B>SetValue(int|long|float|string)</B>
191 <DD>Sets the value of the control to the value specified, if
192 possible. The resulting actual value of the control may be
193 altered to conform to the format of the control, changed
194 to conform with the bounds set on the control if limited,
195 or colored if not limited but the value is out-of-bounds.
196 A ValueError exception will be raised if an invalid value
197 is specified.
198 <BR>
199 <DT><B>GetValue()</B>
200 <DD>Retrieves the numeric value from the control. The value
201 retrieved will be either be returned as a long if the
202 fractionWidth is 0, or a float otherwise.
203 <BR>
204 <BR>
205 <DT><B>SetParameters(**kwargs)</B>
206 <DD>Allows simultaneous setting of various attributes
207 of the control after construction. Keyword arguments
208 allowed are the same parameters as supported in the constructor.
209 <BR>
210 <BR>
211 <DT><B>SetIntegerWidth(value)</B>
212 <DD>Resets the width of the integer portion of the control. The
213 value must be >= 1, or an AttributeError exception will result.
214 This value should account for any grouping characters that might
215 be inserted (if grouping is enabled), but does not need to account
216 for the sign, as that is handled separately by the control.
217 <DT><B>GetIntegerWidth()</B>
218 <DD>Returns the current width of the integer portion of the control,
219 not including any reserved sign position.
220 <BR>
221 <BR>
222 <DT><B>SetFractionWidth(value)</B>
223 <DD>Resets the width of the fractional portion of the control. The
224 value must be >= 0, or an AttributeError exception will result. If
225 0, the current value of the control will be truncated to an integer
226 value.
227 <DT><B>GetFractionWidth()</B>
228 <DD>Returns the current width of the fractional portion of the control.
229 <BR>
230 <BR>
231 <DT><B>SetMin(min=None)</B>
232 <DD>Resets the minimum value of the control. If a value of <I>None</I>
233 is provided, then the control will have no explicit minimum value.
234 If the value specified is greater than the current maximum value,
235 then the function returns False and the minimum will not change from
236 its current setting. On success, the function returns True.
237 <DT><DD>
238 If successful and the current value is lower than the new lower
239 bound, if the control is limited, the value will be automatically
240 adjusted to the new minimum value; if not limited, the value in the
241 control will be colored as invalid.
242 <DT><DD>
243 If min > the max value allowed by the width of the control,
244 the function will return False, and the min will not be set.
245 <BR>
246 <DT><B>GetMin()</B>
247 <DD>Gets the current lower bound value for the control.
248 It will return None if no lower bound is currently specified.
249 <BR>
250 <BR>
251 <DT><B>SetMax(max=None)</B>
252 <DD>Resets the maximum value of the control. If a value of <I>None</I>
253 is provided, then the control will have no explicit maximum value.
254 If the value specified is less than the current minimum value, then
255 the function returns False and the maximum will not change from its
256 current setting. On success, the function returns True.
257 <DT><DD>
258 If successful and the current value is greater than the new upper
259 bound, if the control is limited the value will be automatically
260 adjusted to this maximum value; if not limited, the value in the
261 control will be colored as invalid.
262 <DT><DD>
263 If max > the max value allowed by the width of the control,
264 the function will return False, and the max will not be set.
265 <BR>
266 <DT><B>GetMax()</B>
267 <DD>Gets the current upper bound value for the control.
268 It will return None if no upper bound is currently specified.
269 <BR>
270 <BR>
271 <DT><B>SetBounds(min=None,max=None)</B>
272 <DD>This function is a convenience function for setting the min and max
273 values at the same time. The function only applies the maximum bound
274 if setting the minimum bound is successful, and returns True
275 only if both operations succeed. <B><I>Note:</I></B> leaving out an argument
276 will remove the corresponding bound.
277 <DT><B>GetBounds()</B>
278 <DD>This function returns a two-tuple (min,max), indicating the
279 current bounds of the control. Each value can be None if
280 that bound is not set.
281 <BR>
282 <BR>
283 <DT><B>IsInBounds(value=None)</B>
284 <DD>Returns <I>True</I> if no value is specified and the current value
285 of the control falls within the current bounds. This function can also
286 be called with a value to see if that value would fall within the current
287 bounds of the given control.
288 <BR>
289 <BR>
290 <DT><B>SetLimited(bool)</B>
291 <DD>If called with a value of True, this function will cause the control
292 to limit the value to fall within the bounds currently specified.
293 If the control's value currently exceeds the bounds, it will then
294 be limited accordingly.
295 If called with a value of False, this function will disable value
296 limiting, but coloring of out-of-bounds values will still take
297 place if bounds have been set for the control.
298 <DT><B>GetLimited()</B>
299 <DT><B>IsLimited()</B>
300 <DD>Returns <I>True</I> if the control is currently limiting the
301 value to fall within the current bounds.
302 <BR>
303 <BR>
304 <DT><B>SetAllowNone(bool)</B>
305 <DD>If called with a value of True, this function will cause the control
306 to allow the value to be empty, representing a value of None.
307 If called with a value of False, this function will prevent the value
308 from being None. If the value of the control is currently None,
309 ie. the control is empty, then the value will be changed to that
310 of the lower bound of the control, or 0 if no lower bound is set.
311 <DT><B>GetAllowNone()</B>
312 <DT><B>IsNoneAllowed()</B>
313 <DD>Returns <I>True</I> if the control currently allows its
314 value to be None.
315 <BR>
316 <BR>
317 <DT><B>SetAllowNegative(bool)</B>
318 <DD>If called with a value of True, this function will cause the
319 control to allow the value to be negative (and reserve space for
320 displaying the sign. If called with a value of False, and the
321 value of the control is currently negative, the value of the
322 control will be converted to the absolute value, and then
323 limited appropriately based on the existing bounds of the control
324 (if any).
325 <DT><B>GetAllowNegative()</B>
326 <DT><B>IsNegativeAllowed()</B>
327 <DD>Returns <I>True</I> if the control currently permits values
328 to be negative.
329 <BR>
330 <BR>
331 <DT><B>SetGroupDigits(bool)</B>
332 <DD>If called with a value of True, this will make the control
333 automatically add and manage grouping characters to the presented
334 value in integer portion of the control.
335 <DT><B>GetGroupDigits()</B>
336 <DT><B>IsGroupingAllowed()</B>
337 <DD>Returns <I>True</I> if the control is currently set to group digits.
338 <BR>
339 <BR>
340 <DT><B>SetGroupChar()</B>
341 <DD>Sets the grouping character for the integer portion of the
342 control. (The default grouping character this is ','.
343 <DT><B>GetGroupChar()</B>
344 <DD>Returns the current grouping character for the control.
345 <BR>
346 <BR>
347 <DT><B>SetSelectOnEntry()</B>
348 <DD>If called with a value of <I>True</I>, this will make the control
349 automatically select the contents of each field as it is entered
350 within the control. (The default is True.)
351 <DT><B>GetSelectOnEntry()</B>
352 <DD>Returns <I>True</I> if the control currently auto selects
353 the field values on entry.
354 <BR>
355 <BR>
356 </DL>
357 </body></html>
358 """
359
360 import copy
361 import string
362 import types
363
364 import wx
365
366 from sys import maxint
367 MAXINT = maxint # (constants should be in upper case)
368 MININT = -maxint-1
369
370 from wx.tools.dbg import Logger
371 from wx.lib.maskededit import MaskedEditMixin, MaskedTextCtrl, Field
372
373 dbg = Logger()
374 dbg(enable=0)
375
376 #----------------------------------------------------------------------------
377
378 wxEVT_COMMAND_MASKED_NUMBER_UPDATED = wx.NewEventType()
379 EVT_MASKEDNUM = wx.PyEventBinder(wxEVT_COMMAND_MASKED_NUMBER_UPDATED, 1)
380
381 #----------------------------------------------------------------------------
382
383 class MaskedNumNumberUpdatedEvent(wx.PyCommandEvent):
384 def __init__(self, id, value = 0, object=None):
385 wx.PyCommandEvent.__init__(self, wxEVT_COMMAND_MASKED_NUMBER_UPDATED, id)
386
387 self.__value = value
388 self.SetEventObject(object)
389
390 def GetValue(self):
391 """Retrieve the value of the control at the time
392 this event was generated."""
393 return self.__value
394
395
396 #----------------------------------------------------------------------------
397
398 class MaskedNumCtrl(MaskedTextCtrl):
399
400 valid_ctrl_params = {
401 'integerWidth': 10, # by default allow all 32-bit integers
402 'fractionWidth': 0, # by default, use integers
403 'decimalChar': '.', # by default, use '.' for decimal point
404 'allowNegative': True, # by default, allow negative numbers
405 'useParensForNegatives': False, # by default, use '-' to indicate negatives
406 'groupDigits': True, # by default, don't insert grouping
407 'groupChar': ',', # by default, use ',' for grouping
408 'min': None, # by default, no bounds set
409 'max': None,
410 'limited': False, # by default, no limiting even if bounds set
411 'allowNone': False, # by default, don't allow empty value
412 'selectOnEntry': True, # by default, select the value of each field on entry
413 'foregroundColour': "Black",
414 'signedForegroundColour': "Red",
415 'emptyBackgroundColour': "White",
416 'validBackgroundColour': "White",
417 'invalidBackgroundColour': "Yellow",
418 'useFixedWidthFont': True, # by default, use a fixed-width font
419 }
420
421
422 def __init__ (
423 self, parent, id=-1, value = 0,
424 pos = wx.DefaultPosition, size = wx.DefaultSize,
425 style = wx.TE_PROCESS_TAB, validator = wx.DefaultValidator,
426 name = "maskednum",
427 **kwargs ):
428
429 dbg('MaskedNumCtrl::__init__', indent=1)
430
431 # Set defaults for control:
432 dbg('setting defaults:')
433 for key, param_value in MaskedNumCtrl.valid_ctrl_params.items():
434 # This is done this way to make setattr behave consistently with
435 # "private attribute" name mangling
436 setattr(self, '_' + key, copy.copy(param_value))
437
438 # Assign defaults for all attributes:
439 init_args = copy.deepcopy(MaskedNumCtrl.valid_ctrl_params)
440 dbg('kwargs:', kwargs)
441 for key, param_value in kwargs.items():
442 key = key.replace('Color', 'Colour')
443 if key not in MaskedNumCtrl.valid_ctrl_params.keys():
444 raise AttributeError('invalid keyword argument "%s"' % key)
445 else:
446 init_args[key] = param_value
447 dbg('init_args:', indent=1)
448 for key, param_value in init_args.items():
449 dbg('%s:' % key, param_value)
450 dbg(indent=0)
451
452 # Process initial fields for the control, as part of construction:
453 if type(init_args['integerWidth']) != types.IntType:
454 raise AttributeError('invalid integerWidth (%s) specified; expected integer' % repr(init_args['integerWidth']))
455 elif init_args['integerWidth'] < 1:
456 raise AttributeError('invalid integerWidth (%s) specified; must be > 0' % repr(init_args['integerWidth']))
457
458 fields = {}
459
460 if init_args.has_key('fractionWidth'):
461 if type(init_args['fractionWidth']) != types.IntType:
462 raise AttributeError('invalid fractionWidth (%s) specified; expected integer' % repr(self._fractionWidth))
463 elif init_args['fractionWidth'] < 0:
464 raise AttributeError('invalid fractionWidth (%s) specified; must be >= 0' % repr(init_args['fractionWidth']))
465 self._fractionWidth = init_args['fractionWidth']
466
467 if self._fractionWidth:
468 fracmask = '.' + '#{%d}' % self._fractionWidth
469 dbg('fracmask:', fracmask)
470 fields[1] = Field(defaultValue='0'*self._fractionWidth)
471 else:
472 fracmask = ''
473
474 self._integerWidth = init_args['integerWidth']
475 if init_args['groupDigits']:
476 self._groupSpace = (self._integerWidth - 1) / 3
477 else:
478 self._groupSpace = 0
479 intmask = '#{%d}' % (self._integerWidth + self._groupSpace)
480 if self._fractionWidth:
481 emptyInvalid = False
482 else:
483 emptyInvalid = True
484 fields[0] = Field(formatcodes='r<>', emptyInvalid=emptyInvalid)
485 dbg('intmask:', intmask)
486
487 # don't bother to reprocess these arguments:
488 del init_args['integerWidth']
489 del init_args['fractionWidth']
490
491
492 mask = intmask+fracmask
493
494 # initial value of state vars
495 self._oldvalue = 0
496 self._integerEnd = 0
497 self._typedSign = False
498
499 # Construct the base control:
500 MaskedTextCtrl.__init__(
501 self, parent, id, '',
502 pos, size, style, validator, name,
503 mask = mask,
504 formatcodes = 'FR<',
505 fields = fields,
506 validFunc=self.IsInBounds,
507 setupEventHandling = False)
508
509 self.Bind(wx.EVT_SET_FOCUS, self._OnFocus ) ## defeat automatic full selection
510 self.Bind(wx.EVT_KILL_FOCUS, self._OnKillFocus ) ## run internal validator
511 self.Bind(wx.EVT_LEFT_DCLICK, self._OnDoubleClick) ## select field under cursor on dclick
512 self.Bind(wx.EVT_RIGHT_UP, self._OnContextMenu ) ## bring up an appropriate context menu
513 self.Bind(wx.EVT_KEY_DOWN, self._OnKeyDown ) ## capture control events not normally seen, eg ctrl-tab.
514 self.Bind(wx.EVT_CHAR, self._OnChar ) ## handle each keypress
515 self.Bind(wx.EVT_TEXT, self.OnTextChange ) ## color control appropriately & keep
516 ## track of previous value for undo
517
518 # Establish any additional parameters, with appropriate error checking
519 self.SetParameters(**init_args)
520
521 # Set the value requested (if possible)
522 ## wxCallAfter(self.SetValue, value)
523 self.SetValue(value)
524
525 # Ensure proper coloring:
526 self.Refresh()
527 dbg('finished MaskedNumCtrl::__init__', indent=0)
528
529
530 def SetParameters(self, **kwargs):
531 """
532 This routine is used to initialize and reconfigure the control:
533 """
534 dbg('MaskedNumCtrl::SetParameters', indent=1)
535 maskededit_kwargs = {}
536 reset_fraction_width = False
537
538
539 if( (kwargs.has_key('integerWidth') and kwargs['integerWidth'] != self._integerWidth)
540 or (kwargs.has_key('fractionWidth') and kwargs['fractionWidth'] != self._fractionWidth)
541 or (kwargs.has_key('groupDigits') and kwargs['groupDigits'] != self._groupDigits) ):
542
543 fields = {}
544
545 if kwargs.has_key('fractionWidth'):
546 if type(kwargs['fractionWidth']) != types.IntType:
547 raise AttributeError('invalid fractionWidth (%s) specified; expected integer' % repr(kwargs['fractionWidth']))
548 elif kwargs['fractionWidth'] < 0:
549 raise AttributeError('invalid fractionWidth (%s) specified; must be >= 0' % repr(kwargs['fractionWidth']))
550 else:
551 if self._fractionWidth != kwargs['fractionWidth']:
552 self._fractionWidth = kwargs['fractionWidth']
553
554 if self._fractionWidth:
555 fracmask = '.' + '#{%d}' % self._fractionWidth
556 fields[1] = Field(defaultValue='0'*self._fractionWidth)
557 emptyInvalid = False
558 else:
559 emptyInvalid = True
560 fracmask = ''
561 dbg('fracmask:', fracmask)
562
563 if kwargs.has_key('integerWidth'):
564 if type(kwargs['integerWidth']) != types.IntType:
565 dbg(indent=0)
566 raise AttributeError('invalid integerWidth (%s) specified; expected integer' % repr(kwargs['integerWidth']))
567 elif kwargs['integerWidth'] < 0:
568 dbg(indent=0)
569 raise AttributeError('invalid integerWidth (%s) specified; must be > 0' % repr(kwargs['integerWidth']))
570 else:
571 self._integerWidth = kwargs['integerWidth']
572
573 if kwargs.has_key('groupDigits'):
574 self._groupDigits = kwargs['groupDigits']
575
576 if self._groupDigits:
577 self._groupSpace = (self._integerWidth - 1) / 3
578 else:
579 self._groupSpace = 0
580
581 intmask = '#{%d}' % (self._integerWidth + self._groupSpace)
582 dbg('intmask:', intmask)
583 fields[0] = Field(formatcodes='r<>', emptyInvalid=emptyInvalid)
584 maskededit_kwargs['fields'] = fields
585
586 # don't bother to reprocess these arguments:
587 if kwargs.has_key('integerWidth'):
588 del kwargs['integerWidth']
589 if kwargs.has_key('fractionWidth'):
590 del kwargs['fractionWidth']
591
592 maskededit_kwargs['mask'] = intmask+fracmask
593
594 if kwargs.has_key('groupChar'):
595 old_groupchar = self._groupChar # save so we can reformat properly
596 dbg("old_groupchar: '%s'" % old_groupchar)
597 maskededit_kwargs['groupChar'] = kwargs['groupChar']
598 if kwargs.has_key('decimalChar'):
599 old_decimalchar = self._decimalChar
600 dbg("old_decimalchar: '%s'" % old_decimalchar)
601 maskededit_kwargs['decimalChar'] = kwargs['decimalChar']
602
603 # for all other parameters, assign keyword args as appropriate:
604 for key, param_value in kwargs.items():
605 key = key.replace('Color', 'Colour')
606 if key not in MaskedNumCtrl.valid_ctrl_params.keys():
607 raise AttributeError('invalid keyword argument "%s"' % key)
608 elif key not in MaskedEditMixin.valid_ctrl_params.keys():
609 setattr(self, '_' + key, param_value)
610 elif key in ('mask', 'autoformat'): # disallow explicit setting of mask
611 raise AttributeError('invalid keyword argument "%s"' % key)
612 else:
613 maskededit_kwargs[key] = param_value
614 dbg('kwargs:', kwargs)
615
616 # reprocess existing format codes to ensure proper resulting format:
617 formatcodes = self.GetFormatcodes()
618 if kwargs.has_key('allowNegative'):
619 if kwargs['allowNegative'] and '-' not in formatcodes:
620 formatcodes += '-'
621 maskededit_kwargs['formatcodes'] = formatcodes
622 elif not kwargs['allowNegative'] and '-' in formatcodes:
623 formatcodes = formatcodes.replace('-','')
624 maskededit_kwargs['formatcodes'] = formatcodes
625
626 if kwargs.has_key('groupDigits'):
627 if kwargs['groupDigits'] and ',' not in formatcodes:
628 formatcodes += ','
629 maskededit_kwargs['formatcodes'] = formatcodes
630 elif not kwargs['groupDigits'] and ',' in formatcodes:
631 formatcodes = formatcodes.replace(',','')
632 maskededit_kwargs['formatcodes'] = formatcodes
633
634 if kwargs.has_key('selectOnEntry'):
635 self._selectOnEntry = kwargs['selectOnEntry']
636 dbg("kwargs['selectOnEntry']?", kwargs['selectOnEntry'], "'S' in formatcodes?", 'S' in formatcodes)
637 if kwargs['selectOnEntry'] and 'S' not in formatcodes:
638 formatcodes += 'S'
639 maskededit_kwargs['formatcodes'] = formatcodes
640 elif not kwargs['selectOnEntry'] and 'S' in formatcodes:
641 formatcodes = formatcodes.replace('S','')
642 maskededit_kwargs['formatcodes'] = formatcodes
643
644 if 'r' in formatcodes and self._fractionWidth:
645 # top-level mask should only be right insert if no fractional
646 # part will be shown; ie. if reconfiguring control, remove
647 # previous "global" setting.
648 formatcodes = formatcodes.replace('r', '')
649 maskededit_kwargs['formatcodes'] = formatcodes
650
651 if kwargs.has_key('limited'):
652 if kwargs['limited'] and not self._limited:
653 maskededit_kwargs['validRequired'] = True
654 elif not kwargs['limited'] and self._limited:
655 maskededit_kwargs['validRequired'] = False
656 self._limited = kwargs['limited']
657
658 dbg('maskededit_kwargs:', maskededit_kwargs)
659 if maskededit_kwargs.keys():
660 self.SetCtrlParameters(**maskededit_kwargs)
661
662 # Record end of integer and place cursor there:
663 integerEnd = self._fields[0]._extent[1]
664 self.SetInsertionPoint(integerEnd)
665 self.SetSelection(integerEnd, integerEnd)
666
667 # Go ensure all the format codes necessary are present:
668 orig_intformat = intformat = self.GetFieldParameter(0, 'formatcodes')
669 if 'r' not in intformat:
670 intformat += 'r'
671 if '>' not in intformat:
672 intformat += '>'
673 if intformat != orig_intformat:
674 if self._fractionWidth:
675 self.SetFieldParameters(0, formatcodes=intformat)
676 else:
677 self.SetCtrlParameters(formatcodes=intformat)
678
679 # Set min and max as appropriate:
680 if kwargs.has_key('min'):
681 min = kwargs['min']
682 if( self._max is None
683 or min is None
684 or (self._max is not None and self._max >= min) ):
685 dbg('examining min')
686 if min is not None:
687 try:
688 textmin = self._toGUI(min, apply_limits = False)
689 except ValueError:
690 dbg('min will not fit into control; ignoring', indent=0)
691 raise
692 dbg('accepted min')
693 self._min = min
694 else:
695 dbg('ignoring min')
696
697
698 if kwargs.has_key('max'):
699 max = kwargs['max']
700 if( self._min is None
701 or max is None
702 or (self._min is not None and self._min <= max) ):
703 dbg('examining max')
704 if max is not None:
705 try:
706 textmax = self._toGUI(max, apply_limits = False)
707 except ValueError:
708 dbg('max will not fit into control; ignoring', indent=0)
709 raise
710 dbg('accepted max')
711 self._max = max
712 else:
713 dbg('ignoring max')
714
715 if kwargs.has_key('allowNegative'):
716 self._allowNegative = kwargs['allowNegative']
717
718 # Ensure current value of control obeys any new restrictions imposed:
719 text = self._GetValue()
720 dbg('text value: "%s"' % text)
721 if kwargs.has_key('groupChar') and text.find(old_groupchar) != -1:
722 text = text.replace(old_groupchar, self._groupChar)
723 if kwargs.has_key('decimalChar') and text.find(old_decimalchar) != -1:
724 text = text.replace(old_decimalchar, self._decimalChar)
725 if text != self._GetValue():
726 wx.TextCtrl.SetValue(self, text)
727
728 value = self.GetValue()
729
730 dbg('self._allowNegative?', self._allowNegative)
731 if not self._allowNegative and self._isNeg:
732 value = abs(value)
733 dbg('abs(value):', value)
734 self._isNeg = False
735
736 elif not self._allowNone and MaskedTextCtrl.GetValue(self) == '':
737 if self._min > 0:
738 value = self._min
739 else:
740 value = 0
741
742 sel_start, sel_to = self.GetSelection()
743 if self.IsLimited() and self._min is not None and value < self._min:
744 dbg('Set to min value:', self._min)
745 self._SetValue(self._toGUI(self._min))
746
747 elif self.IsLimited() and self._max is not None and value > self._max:
748 dbg('Setting to max value:', self._max)
749 self._SetValue(self._toGUI(self._max))
750 else:
751 # reformat current value as appropriate to possibly new conditions
752 dbg('Reformatting value:', value)
753 sel_start, sel_to = self.GetSelection()
754 self._SetValue(self._toGUI(value))
755 self.Refresh() # recolor as appropriate
756 dbg('finished MaskedNumCtrl::SetParameters', indent=0)
757
758
759
760 def _GetNumValue(self, value):
761 """
762 This function attempts to "clean up" a text value, providing a regularized
763 convertable string, via atol() or atof(), for any well-formed numeric text value.
764 """
765 return value.replace(self._groupChar, '').replace(self._decimalChar, '.').replace('(', '-').replace(')','').strip()
766
767
768 def GetFraction(self, candidate=None):
769 """
770 Returns the fractional portion of the value as a float. If there is no
771 fractional portion, the value returned will be 0.0.
772 """
773 if not self._fractionWidth:
774 return 0.0
775 else:
776 fracstart, fracend = self._fields[1]._extent
777 if candidate is None:
778 value = self._toGUI(MaskedTextCtrl.GetValue(self))
779 else:
780 value = self._toGUI(candidate)
781 fracstring = value[fracstart:fracend].strip()
782 if not value:
783 return 0.0
784 else:
785 return string.atof(fracstring)
786
787 def _OnChangeSign(self, event):
788 dbg('MaskedNumCtrl::_OnChangeSign', indent=1)
789 self._typedSign = True
790 MaskedEditMixin._OnChangeSign(self, event)
791 dbg(indent=0)
792
793
794 def _disallowValue(self):
795 dbg('MaskedNumCtrl::_disallowValue')
796 # limited and -1 is out of bounds
797 if self._typedSign:
798 self._isNeg = False
799 if not wx.Validator_IsSilent():
800 wx.Bell()
801 sel_start, sel_to = self._GetSelection()
802 dbg('queuing reselection of (%d, %d)' % (sel_start, sel_to))
803 wx.CallAfter(self.SetInsertionPoint, sel_start) # preserve current selection/position
804 wx.CallAfter(self.SetSelection, sel_start, sel_to)
805
806 def _SetValue(self, value):
807 """
808 This routine supersedes the base masked control _SetValue(). It is
809 needed to ensure that the value of the control is always representable/convertable
810 to a numeric return value (via GetValue().) This routine also handles
811 automatic adjustment and grouping of the value without explicit intervention
812 by the user.
813 """
814
815 dbg('MaskedNumCtrl::_SetValue("%s")' % value, indent=1)
816
817 if( (self._fractionWidth and value.find(self._decimalChar) == -1) or
818 (self._fractionWidth == 0 and value.find(self._decimalChar) != -1) ) :
819 value = self._toGUI(value)
820
821 numvalue = self._GetNumValue(value)
822 dbg('cleansed value: "%s"' % numvalue)
823 replacement = None
824
825 if numvalue == "":
826 if self._allowNone:
827 dbg('calling base MaskedTextCtrl._SetValue(self, "%s")' % value)
828 MaskedTextCtrl._SetValue(self, value)
829 self.Refresh()
830 return
831 elif self._min > 0 and self.IsLimited():
832 replacement = self._min
833 else:
834 replacement = 0
835 dbg('empty value; setting replacement:', replacement)
836
837 if replacement is None:
838 # Go get the integer portion about to be set and verify its validity
839 intstart, intend = self._fields[0]._extent
840 dbg('intstart, intend:', intstart, intend)
841 dbg('raw integer:"%s"' % value[intstart:intend])
842 int = self._GetNumValue(value[intstart:intend])
843 numval = self._fromGUI(value)
844
845 dbg('integer: "%s"' % int)
846 try:
847 fracval = self.GetFraction(value)
848 except ValueError, e:
849 dbg('Exception:', e, 'must be out of bounds; disallow value')
850 self._disallowValue()
851 dbg(indent=0)
852 return
853
854 if fracval == 0.0:
855 dbg('self._isNeg?', self._isNeg)
856 if int == '-' and self._oldvalue < 0 and not self._typedSign:
857 dbg('just a negative sign; old value < 0; setting replacement of 0')
858 replacement = 0
859 self._isNeg = False
860 elif int[:2] == '-0' and self._fractionWidth == 0:
861 if self._oldvalue < 0:
862 dbg('-0; setting replacement of 0')
863 replacement = 0
864 self._isNeg = False
865 elif not self._limited or (self._min < -1 and self._max >= -1):
866 dbg('-0; setting replacement of -1')
867 replacement = -1
868 self._isNeg = True
869 else:
870 # limited and -1 is out of bounds
871 self._disallowValue()
872 dbg(indent=0)
873 return
874
875 elif int == '-' and (self._oldvalue >= 0 or self._typedSign) and self._fractionWidth == 0:
876 if not self._limited or (self._min < -1 and self._max >= -1):
877 dbg('just a negative sign; setting replacement of -1')
878 replacement = -1
879 else:
880 # limited and -1 is out of bounds
881 self._disallowValue()
882 dbg(indent=0)
883 return
884
885 elif( self._typedSign
886 and int.find('-') != -1
887 and self._limited
888 and not self._min <= numval <= self._max):
889 # changed sign resulting in value that's now out-of-bounds;
890 # disallow
891 self._disallowValue()
892 dbg(indent=0)
893 return
894
895 if replacement is None:
896 if int and int != '-':
897 try:
898 string.atol(int)
899 except ValueError:
900 # integer requested is not legal. This can happen if the user
901 # is attempting to insert a digit in the middle of the control
902 # resulting in something like " 3 45". Disallow such actions:
903 dbg('>>>>>>>>>>>>>>>> "%s" does not convert to a long!' % int)
904 if not wx.Validator_IsSilent():
905 wx.Bell()
906 sel_start, sel_to = self._GetSelection()
907 dbg('queuing reselection of (%d, %d)' % (sel_start, sel_to))
908 wx.CallAfter(self.SetInsertionPoint, sel_start) # preserve current selection/position
909 wx.CallAfter(self.SetSelection, sel_start, sel_to)
910 dbg(indent=0)
911 return
912
913 if int[0] == '0' and len(int) > 1:
914 dbg('numvalue: "%s"' % numvalue.replace(' ', ''))
915 if self._fractionWidth:
916 value = self._toGUI(string.atof(numvalue))
917 else:
918 value = self._toGUI(string.atol(numvalue))
919 dbg('modified value: "%s"' % value)
920
921 self._typedSign = False # reset state var
922
923 if replacement is not None:
924 # Value presented wasn't a legal number, but control should do something
925 # reasonable instead:
926 dbg('setting replacement value:', replacement)
927 self._SetValue(self._toGUI(replacement))
928 sel_start = MaskedTextCtrl.GetValue(self).find(str(abs(replacement))) # find where it put the 1, so we can select it
929 sel_to = sel_start + len(str(abs(replacement)))
930 dbg('queuing selection of (%d, %d)' %(sel_start, sel_to))
931 wx.CallAfter(self.SetInsertionPoint, sel_start)
932 wx.CallAfter(self.SetSelection, sel_start, sel_to)
933 dbg(indent=0)
934 return
935
936 # Otherwise, apply appropriate formatting to value:
937
938 # Because we're intercepting the value and adjusting it
939 # before a sign change is detected, we need to do this here:
940 if '-' in value or '(' in value:
941 self._isNeg = True
942 else:
943 self._isNeg = False
944
945 dbg('value:"%s"' % value, 'self._useParens:', self._useParens)
946 if self._fractionWidth:
947 adjvalue = self._adjustFloat(self._GetNumValue(value).replace('.',self._decimalChar))
948 else:
949 adjvalue = self._adjustInt(self._GetNumValue(value))
950 dbg('adjusted value: "%s"' % adjvalue)
951
952
953 sel_start, sel_to = self._GetSelection() # record current insertion point
954 dbg('calling base MaskedTextCtrl._SetValue(self, "%s")' % adjvalue)
955 MaskedTextCtrl._SetValue(self, adjvalue)
956 # After all actions so far scheduled, check that resulting cursor
957 # position is appropriate, and move if not:
958 wx.CallAfter(self._CheckInsertionPoint)
959
960 dbg('finished MaskedNumCtrl::_SetValue', indent=0)
961
962 def _CheckInsertionPoint(self):
963 # If current insertion point is before the end of the integer and
964 # its before the 1st digit, place it just after the sign position:
965 dbg('MaskedNumCtrl::CheckInsertionPoint', indent=1)
966 sel_start, sel_to = self._GetSelection()
967 text = self._GetValue()
968 if sel_to < self._fields[0]._extent[1] and text[sel_to] in (' ', '-', '('):
969 text, signpos, right_signpos = self._getSignedValue()
970 dbg('setting selection(%d, %d)' % (signpos+1, signpos+1))
971 self.SetInsertionPoint(signpos+1)
972 self.SetSelection(signpos+1, signpos+1)
973 dbg(indent=0)
974
975
976 def _OnErase( self, event ):
977 """
978 This overrides the base control _OnErase, so that erasing around
979 grouping characters auto selects the digit before or after the
980 grouping character, so that the erasure does the right thing.
981 """
982 dbg('MaskedNumCtrl::_OnErase', indent=1)
983
984 #if grouping digits, make sure deletes next to group char always
985 # delete next digit to appropriate side:
986 if self._groupDigits:
987 key = event.GetKeyCode()
988 value = MaskedTextCtrl.GetValue(self)
989 sel_start, sel_to = self._GetSelection()
990
991 if key == wx.WXK_BACK:
992 # if 1st selected char is group char, select to previous digit
993 if sel_start > 0 and sel_start < len(self._mask) and value[sel_start:sel_to] == self._groupChar:
994 self.SetInsertionPoint(sel_start-1)
995 self.SetSelection(sel_start-1, sel_to)
996
997 # elif previous char is group char, select to previous digit
998 elif sel_start > 1 and sel_start == sel_to and value[sel_start-1:sel_start] == self._groupChar:
999 self.SetInsertionPoint(sel_start-2)
1000 self.SetSelection(sel_start-2, sel_to)
1001
1002 elif key == wx.WXK_DELETE:
1003 if( sel_to < len(self._mask) - 2 + (1 *self._useParens)
1004 and sel_start == sel_to
1005 and value[sel_to] == self._groupChar ):
1006 self.SetInsertionPoint(sel_start)
1007 self.SetSelection(sel_start, sel_to+2)
1008
1009 elif( sel_to < len(self._mask) - 2 + (1 *self._useParens)
1010 and value[sel_start:sel_to] == self._groupChar ):
1011 self.SetInsertionPoint(sel_start)
1012 self.SetSelection(sel_start, sel_to+1)
1013
1014 MaskedTextCtrl._OnErase(self, event)
1015 dbg(indent=0)
1016
1017
1018 def OnTextChange( self, event ):
1019 """
1020 Handles an event indicating that the text control's value
1021 has changed, and issue EVT_MaskedNum event.
1022 NOTE: using wxTextCtrl.SetValue() to change the control's
1023 contents from within a EVT_CHAR handler can cause double
1024 text events. So we check for actual changes to the text
1025 before passing the events on.
1026 """
1027 dbg('MaskedNumCtrl::OnTextChange', indent=1)
1028 if not MaskedTextCtrl._OnTextChange(self, event):
1029 dbg(indent=0)
1030 return
1031
1032 # else... legal value
1033
1034 value = self.GetValue()
1035 if value != self._oldvalue:
1036 try:
1037 self.GetEventHandler().ProcessEvent(
1038 MaskedNumNumberUpdatedEvent( self.GetId(), self.GetValue(), self ) )
1039 except ValueError:
1040 dbg(indent=0)
1041 return
1042 # let normal processing of the text continue
1043 event.Skip()
1044 self._oldvalue = value # record for next event
1045 dbg(indent=0)
1046
1047 def _GetValue(self):
1048 """
1049 Override of MaskedTextCtrl to allow amixin to get the raw text value of the
1050 control with this function.
1051 """
1052 return wx.TextCtrl.GetValue(self)
1053
1054
1055 def GetValue(self):
1056 """
1057 Returns the current numeric value of the control.
1058 """
1059 return self._fromGUI( MaskedTextCtrl.GetValue(self) )
1060
1061 def SetValue(self, value):
1062 """
1063 Sets the value of the control to the value specified.
1064 The resulting actual value of the control may be altered to
1065 conform with the bounds set on the control if limited,
1066 or colored if not limited but the value is out-of-bounds.
1067 A ValueError exception will be raised if an invalid value
1068 is specified.
1069 """
1070 MaskedTextCtrl.SetValue( self, self._toGUI(value) )
1071
1072
1073 def SetIntegerWidth(self, value):
1074 self.SetCtrlParameters(integerWidth=value)
1075 def GetIntegerWidth(self):
1076 return self._integerWidth
1077
1078 def SetFractionWidth(self, value):
1079 self.SetCtrlParameters(fractionWidth=value)
1080 def GetFractionWidth(self):
1081 return self._fractionWidth
1082
1083
1084
1085 def SetMin(self, min=None):
1086 """
1087 Sets the minimum value of the control. If a value of None
1088 is provided, then the control will have no explicit minimum value.
1089 If the value specified is greater than the current maximum value,
1090 then the function returns False and the minimum will not change from
1091 its current setting. On success, the function returns True.
1092
1093 If successful and the current value is lower than the new lower
1094 bound, if the control is limited, the value will be automatically
1095 adjusted to the new minimum value; if not limited, the value in the
1096 control will be colored as invalid.
1097
1098 If min > the max value allowed by the width of the control,
1099 the function will return False, and the min will not be set.
1100 """
1101 dbg('MaskedNumCtrl::SetMin(%s)' % repr(min), indent=1)
1102 if( self._max is None
1103 or min is None
1104 or (self._max is not None and self._max >= min) ):
1105 try:
1106 self.SetParameters(min=min)
1107 bRet = True
1108 except ValueError:
1109 bRet = False
1110 else:
1111 bRet = False
1112 dbg(indent=0)
1113 return bRet
1114
1115 def GetMin(self):
1116 """
1117 Gets the lower bound value of the control. It will return
1118 None if not specified.
1119 """
1120 return self._min
1121
1122
1123 def SetMax(self, max=None):
1124 """
1125 Sets the maximum value of the control. If a value of None
1126 is provided, then the control will have no explicit maximum value.
1127 If the value specified is less than the current minimum value, then
1128 the function returns False and the maximum will not change from its
1129 current setting. On success, the function returns True.
1130
1131 If successful and the current value is greater than the new upper
1132 bound, if the control is limited the value will be automatically
1133 adjusted to this maximum value; if not limited, the value in the
1134 control will be colored as invalid.
1135
1136 If max > the max value allowed by the width of the control,
1137 the function will return False, and the max will not be set.
1138 """
1139 if( self._min is None
1140 or max is None
1141 or (self._min is not None and self._min <= max) ):
1142 try:
1143 self.SetParameters(max=max)
1144 bRet = True
1145 except ValueError:
1146 bRet = False
1147 else:
1148 bRet = False
1149
1150 return bRet
1151
1152
1153 def GetMax(self):
1154 """
1155 Gets the maximum value of the control. It will return the current
1156 maximum integer, or None if not specified.
1157 """
1158 return self._max
1159
1160
1161 def SetBounds(self, min=None, max=None):
1162 """
1163 This function is a convenience function for setting the min and max
1164 values at the same time. The function only applies the maximum bound
1165 if setting the minimum bound is successful, and returns True
1166 only if both operations succeed.
1167 NOTE: leaving out an argument will remove the corresponding bound.
1168 """
1169 ret = self.SetMin(min)
1170 return ret and self.SetMax(max)
1171
1172
1173 def GetBounds(self):
1174 """
1175 This function returns a two-tuple (min,max), indicating the
1176 current bounds of the control. Each value can be None if
1177 that bound is not set.
1178 """
1179 return (self._min, self._max)
1180
1181
1182 def SetLimited(self, limited):
1183 """
1184 If called with a value of True, this function will cause the control
1185 to limit the value to fall within the bounds currently specified.
1186 If the control's value currently exceeds the bounds, it will then
1187 be limited accordingly.
1188
1189 If called with a value of False, this function will disable value
1190 limiting, but coloring of out-of-bounds values will still take
1191 place if bounds have been set for the control.
1192 """
1193 self.SetParameters(limited = limited)
1194
1195
1196 def IsLimited(self):
1197 """
1198 Returns True if the control is currently limiting the
1199 value to fall within the current bounds.
1200 """
1201 return self._limited
1202
1203 def GetLimited(self):
1204 """ (For regularization of property accessors) """
1205 return self.IsLimited
1206
1207
1208 def IsInBounds(self, value=None):
1209 """
1210 Returns True if no value is specified and the current value
1211 of the control falls within the current bounds. This function can
1212 also be called with a value to see if that value would fall within
1213 the current bounds of the given control.
1214 """
1215 dbg('IsInBounds(%s)' % repr(value), indent=1)
1216 if value is None:
1217 value = self.GetValue()
1218 else:
1219 try:
1220 value = self._GetNumValue(self._toGUI(value))
1221 except ValueError, e:
1222 dbg('error getting NumValue(self._toGUI(value)):', e, indent=0)
1223 return False
1224 if value == '':
1225 value = None
1226 elif self._fractionWidth:
1227 value = float(value)
1228 else:
1229 value = long(value)
1230
1231 min = self.GetMin()
1232 max = self.GetMax()
1233 if min is None: min = value
1234 if max is None: max = value
1235
1236 # if bounds set, and value is None, return False
1237 if value == None and (min is not None or max is not None):
1238 dbg('finished IsInBounds', indent=0)
1239 return 0
1240 else:
1241 dbg('finished IsInBounds', indent=0)
1242 return min <= value <= max
1243
1244
1245 def SetAllowNone(self, allow_none):
1246 """
1247 Change the behavior of the validation code, allowing control
1248 to have a value of None or not, as appropriate. If the value
1249 of the control is currently None, and allow_none is False, the
1250 value of the control will be set to the minimum value of the
1251 control, or 0 if no lower bound is set.
1252 """
1253 self._allowNone = allow_none
1254 if not allow_none and self.GetValue() is None:
1255 min = self.GetMin()
1256 if min is not None: self.SetValue(min)
1257 else: self.SetValue(0)
1258
1259
1260 def IsNoneAllowed(self):
1261 return self._allowNone
1262 def GetAllowNone(self):
1263 """ (For regularization of property accessors) """
1264 return self.IsNoneAllowed()
1265
1266 def SetAllowNegative(self, value):
1267 self.SetParameters(allowNegative=value)
1268 def IsNegativeAllowed(self):
1269 return self._allowNegative
1270 def GetAllowNegative(self):
1271 """ (For regularization of property accessors) """
1272 return self.IsNegativeAllowed()
1273
1274 def SetGroupDigits(self, value):
1275 self.SetParameters(groupDigits=value)
1276 def IsGroupingAllowed(self):
1277 return self._groupDigits
1278 def GetGroupDigits(self):
1279 """ (For regularization of property accessors) """
1280 return self.IsGroupingAllowed()
1281
1282 def SetGroupChar(self, value):
1283 self.SetParameters(groupChar=value)
1284 def GetGroupChar(self):
1285 return self._groupChar
1286
1287 def SetDecimalChar(self, value):
1288 self.SetParameters(decimalChar=value)
1289 def GetDecimalChar(self):
1290 return self._decimalChar
1291
1292 def SetSelectOnEntry(self, value):
1293 self.SetParameters(selectOnEntry=value)
1294 def GetSelectOnEntry(self):
1295 return self._selectOnEntry
1296
1297 # (Other parameter accessors are inherited from base class)
1298
1299
1300 def _toGUI( self, value, apply_limits = True ):
1301 """
1302 Conversion function used to set the value of the control; does
1303 type and bounds checking and raises ValueError if argument is
1304 not a valid value.
1305 """
1306 dbg('MaskedNumCtrl::_toGUI(%s)' % repr(value), indent=1)
1307 if value is None and self.IsNoneAllowed():
1308 dbg(indent=0)
1309 return self._template
1310
1311 elif type(value) in (types.StringType, types.UnicodeType):
1312 value = self._GetNumValue(value)
1313 dbg('cleansed num value: "%s"' % value)
1314 try:
1315 if self._fractionWidth or value.find('.') != -1:
1316 value = float(value)
1317 else:
1318 value = long(value)
1319 except Exception, e:
1320 dbg('exception raised:', e, indent=0)
1321 raise ValueError ('MaskedNumCtrl requires numeric value, passed %s'% repr(value) )
1322
1323 elif type(value) not in (types.IntType, types.LongType, types.FloatType):
1324 dbg(indent=0)
1325 raise ValueError (
1326 'MaskedNumCtrl requires numeric value, passed %s'% repr(value) )
1327
1328 if not self._allowNegative and value < 0:
1329 raise ValueError (
1330 'control configured to disallow negative values, passed %s'% repr(value) )
1331
1332 if self.IsLimited() and apply_limits:
1333 min = self.GetMin()
1334 max = self.GetMax()
1335 if not min is None and value < min:
1336 dbg(indent=0)
1337 raise ValueError (
1338 'value %d is below minimum value of control'% value )
1339 if not max is None and value > max:
1340 dbg(indent=0)
1341 raise ValueError (
1342 'value %d exceeds value of control'% value )
1343
1344 adjustwidth = len(self._mask) - (1 * self._useParens * self._signOk)
1345 dbg('len(%s):' % self._mask, len(self._mask))
1346 dbg('adjustwidth - groupSpace:', adjustwidth - self._groupSpace)
1347 dbg('adjustwidth:', adjustwidth)
1348 if self._fractionWidth == 0:
1349 s = str(long(value)).rjust(self._integerWidth)
1350 else:
1351 format = '%' + '%d.%df' % (self._integerWidth+self._fractionWidth+1, self._fractionWidth)
1352 s = format % float(value)
1353 dbg('s:"%s"' % s, 'len(s):', len(s))
1354 if len(s) > (adjustwidth - self._groupSpace):
1355 dbg(indent=0)
1356 raise ValueError ('value %s exceeds the integer width of the control (%d)' % (s, self._integerWidth))
1357 elif s[0] not in ('-', ' ') and self._allowNegative and len(s) == (adjustwidth - self._groupSpace):
1358 dbg(indent=0)
1359 raise ValueError ('value %s exceeds the integer width of the control (%d)' % (s, self._integerWidth))
1360
1361 s = s.rjust(adjustwidth).replace('.', self._decimalChar)
1362 if self._signOk and self._useParens:
1363 if s.find('-') != -1:
1364 s = s.replace('-', '(') + ')'
1365 else:
1366 s += ' '
1367 dbg('returned: "%s"' % s, indent=0)
1368 return s
1369
1370
1371 def _fromGUI( self, value ):
1372 """
1373 Conversion function used in getting the value of the control.
1374 """
1375 dbg(suspend=0)
1376 dbg('MaskedNumCtrl::_fromGUI(%s)' % value, indent=1)
1377 # One or more of the underlying text control implementations
1378 # issue an intermediate EVT_TEXT when replacing the control's
1379 # value, where the intermediate value is an empty string.
1380 # So, to ensure consistency and to prevent spurious ValueErrors,
1381 # we make the following test, and react accordingly:
1382 #
1383 if value == '':
1384 if not self.IsNoneAllowed():
1385 dbg('empty value; not allowed,returning 0', indent = 0)
1386 if self._fractionWidth:
1387 return 0.0
1388 else:
1389 return 0
1390 else:
1391 dbg('empty value; returning None', indent = 0)
1392 return None
1393 else:
1394 value = self._GetNumValue(value)
1395 dbg('Num value: "%s"' % value)
1396 if self._fractionWidth:
1397 try:
1398 dbg(indent=0)
1399 return float( value )
1400 except ValueError:
1401 dbg("couldn't convert to float; returning None")
1402 return None
1403 else:
1404 raise
1405 else:
1406 try:
1407 dbg(indent=0)
1408 return int( value )
1409 except ValueError:
1410 try:
1411 dbg(indent=0)
1412 return long( value )
1413 except ValueError:
1414 dbg("couldn't convert to long; returning None")
1415 return None
1416
1417 else:
1418 raise
1419 else:
1420 dbg('exception occurred; returning None')
1421 return None
1422
1423
1424 def _Paste( self, value=None, raise_on_invalid=False, just_return_value=False ):
1425 """
1426 Preprocessor for base control paste; if value needs to be right-justified
1427 to fit in control, do so prior to paste:
1428 """
1429 dbg('MaskedNumCtrl::_Paste (value = "%s")' % value)
1430 if value is None:
1431 paste_text = self._getClipboardContents()
1432 else:
1433 paste_text = value
1434
1435 # treat paste as "replace number", if appropriate:
1436 sel_start, sel_to = self._GetSelection()
1437 if sel_start == sel_to or self._selectOnEntry and (sel_start, sel_to) == self._fields[0]._extent:
1438 paste_text = self._toGUI(paste_text)
1439 self._SetSelection(0, len(self._mask))
1440
1441 return MaskedEditMixin._Paste(self,
1442 paste_text,
1443 raise_on_invalid=raise_on_invalid,
1444 just_return_value=just_return_value)
1445
1446
1447
1448 #===========================================================================
1449
1450 if __name__ == '__main__':
1451
1452 import traceback
1453
1454 class myDialog(wx.Dialog):
1455 def __init__(self, parent, id, title,
1456 pos = wx.DefaultPosition, size = wx.DefaultSize,
1457 style = wx.DEFAULT_DIALOG_STYLE ):
1458 wx.Dialog.__init__(self, parent, id, title, pos, size, style)
1459
1460 self.int_ctrl = MaskedNumCtrl(self, wx.NewId(), size=(55,20))
1461 self.OK = wx.Button( self, wx.ID_OK, "OK")
1462 self.Cancel = wx.Button( self, wx.ID_CANCEL, "Cancel")
1463
1464 vs = wx.BoxSizer( wx.VERTICAL )
1465 vs.Add( self.int_ctrl, 0, wx.ALIGN_CENTRE|wx.ALL, 5 )
1466 hs = wx.BoxSizer( wx.HORIZONTAL )
1467 hs.Add( self.OK, 0, wx.ALIGN_CENTRE|wx.ALL, 5 )
1468 hs.Add( self.Cancel, 0, wx.ALIGN_CENTRE|wx.ALL, 5 )
1469 vs.Add(hs, 0, wx.ALIGN_CENTRE|wx.ALL, 5 )
1470
1471 self.SetAutoLayout( True )
1472 self.SetSizer( vs )
1473 vs.Fit( self )
1474 vs.SetSizeHints( self )
1475 self.Bind(EVT_MASKEDNUM, self.OnChange, self.int_ctrl)
1476
1477 def OnChange(self, event):
1478 print 'value now', event.GetValue()
1479
1480 class TestApp(wx.App):
1481 def OnInit(self):
1482 try:
1483 self.frame = wx.Frame(None, -1, "Test", (20,20), (120,100) )
1484 self.panel = wx.Panel(self.frame, -1)
1485 button = wx.Button(self.panel, -1, "Push Me", (20, 20))
1486 self.Bind(wx.EVT_BUTTON, self.OnClick, button)
1487 except:
1488 traceback.print_exc()
1489 return False
1490 return True
1491
1492 def OnClick(self, event):
1493 dlg = myDialog(self.panel, -1, "test MaskedNumCtrl")
1494 dlg.int_ctrl.SetValue(501)
1495 dlg.int_ctrl.SetInsertionPoint(1)
1496 dlg.int_ctrl.SetSelection(1,2)
1497 rc = dlg.ShowModal()
1498 print 'final value', dlg.int_ctrl.GetValue()
1499 del dlg
1500 self.frame.Destroy()
1501
1502 def Show(self):
1503 self.frame.Show(True)
1504
1505 try:
1506 app = TestApp(0)
1507 app.Show()
1508 app.MainLoop()
1509 except:
1510 traceback.print_exc()
1511
1512 i=0
1513 ## To-Do's:
1514 ## =============================##
1515 ## 1. Add support for printf-style format specification.
1516 ## 2. Add option for repositioning on 'illegal' insertion point.
wxWidgets (Impactor)