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wxWidgets/wxPython/wx/lib/masked/numctrl.py
Robin Dunn 02b800ce7c Merged modifications from the 2.6 branch 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@36607 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2005-12-30 23:02:03 +00:00

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#----------------------------------------------------------------------------
# Name: wxPython.lib.masked.numctrl.py
# Author: Will Sadkin
# Created: 09/06/2003
# Copyright: (c) 2003 by Will Sadkin
# RCS-ID: $Id$
# License: wxWidgets license
#----------------------------------------------------------------------------
# NOTE:
# This was written to provide a numeric edit control for wxPython that
# does things like right-insert (like a calculator), and does grouping, etc.
# (ie. the features of masked.TextCtrl), but allows Get/Set of numeric
# values, rather than text.
#
# Masked.NumCtrl permits integer, and floating point values to be set
# retrieved or set via .GetValue() and .SetValue() (type chosen based on
# fraction width, and provides an masked.EVT_NUM() event function for trapping
# changes to the control.
#
# It supports negative numbers as well as the naturals, and has the option
# of not permitting leading zeros or an empty control; if an empty value is
# not allowed, attempting to delete the contents of the control will result
# in a (selected) value of zero, thus preserving a legitimate numeric value.
# Similarly, replacing the contents of the control with '-' will result in
# a selected (absolute) value of -1.
#
# masked.NumCtrl also supports range limits, with the option of either
# enforcing them or simply coloring the text of the control if the limits
# are exceeded.
#
# masked.NumCtrl is intended to support fixed-point numeric entry, and
# is derived from BaseMaskedTextCtrl. As such, it supports a limited range
# of values to comply with a fixed-width entry mask.
#----------------------------------------------------------------------------
# 12/09/2003 - Jeff Grimmett (grimmtooth@softhome.net)
#
# o Updated for wx namespace
#
# 12/20/2003 - Jeff Grimmett (grimmtooth@softhome.net)
#
# o wxMaskedEditMixin -> MaskedEditMixin
# o wxMaskedTextCtrl -> masked.TextCtrl
# o wxMaskedNumNumberUpdatedEvent -> masked.NumberUpdatedEvent
# o wxMaskedNumCtrl -> masked.NumCtrl
#
"""
masked.NumCtrl:
- allows you to get and set integer or floating point numbers as value,</LI>
- provides bounds support and optional value limiting,</LI>
- has the right-insert input style that MaskedTextCtrl supports,</LI>
- provides optional automatic grouping, sign control and format, grouping and decimal
character selection, etc. etc.</LI>
Being derived from masked.TextCtrl, the control only allows
fixed-point notation. That is, it has a fixed (though reconfigurable)
maximum width for the integer portion and optional fixed width
fractional portion.
Here's the API::
from wx.lib.masked import NumCtrl
NumCtrl(
parent, id = -1,
value = 0,
pos = wx.DefaultPosition,
size = wx.DefaultSize,
style = 0,
validator = wx.DefaultValidator,
name = "masked.number",
integerWidth = 10,
fractionWidth = 0,
allowNone = False,
allowNegative = True,
useParensForNegatives = False,
groupDigits = False,
groupChar = ',',
decimalChar = '.',
min = None,
max = None,
limited = False,
selectOnEntry = True,
foregroundColour = "Black",
signedForegroundColour = "Red",
emptyBackgroundColour = "White",
validBackgroundColour = "White",
invalidBackgroundColour = "Yellow",
autoSize = True
)
value
If no initial value is set, the default will be zero, or
the minimum value, if specified. If an illegal string is specified,
a ValueError will result. (You can always later set the initial
value with SetValue() after instantiation of the control.)
integerWidth
Indicates how many places to the right of any decimal point
should be allowed in the control. This will, perforce, limit
the size of the values that can be entered. This number need
not include space for grouping characters or the sign, if either
of these options are enabled, as the resulting underlying
mask is automatically by the control. The default of 10
will allow any 32 bit integer value. The minimum value
for integerWidth is 1.
fractionWidth
Indicates how many decimal places to show for numeric value.
If default (0), then the control will display and return only
integer or long values.
allowNone
Boolean indicating whether or not the control is allowed to be
empty, representing a value of None for the control.
allowNegative
Boolean indicating whether or not control is allowed to hold
negative numbers.
useParensForNegatives
If true, this will cause negative numbers to be displayed with ()s
rather than -, (although '-' will still trigger a negative number.)
groupDigits
Indicates whether or not grouping characters should be allowed and/or
inserted when leaving the control or the decimal character is entered.
groupChar
What grouping character will be used if allowed. (By default ',')
decimalChar
If fractionWidth is > 0, what character will be used to represent
the decimal point. (By default '.')
min
The minimum value that the control should allow. This can be also be
adjusted with SetMin(). If the control is not limited, any value
below this bound will result in a background colored with the current
invalidBackgroundColour. If the min specified will not fit into the
control, the min setting will be ignored.
max
The maximum value that the control should allow. This can be
adjusted with SetMax(). If the control is not limited, any value
above this bound will result in a background colored with the current
invalidBackgroundColour. If the max specified will not fit into the
control, the max setting will be ignored.
limited
Boolean indicating whether the control prevents values from
exceeding the currently set minimum and maximum values (bounds).
If False and bounds are set, out-of-bounds values will
result in a background colored with the current invalidBackgroundColour.
selectOnEntry
Boolean indicating whether or not the value in each field of the
control should be automatically selected (for replacement) when
that field is entered, either by cursor movement or tabbing.
This can be desirable when using these controls for rapid data entry.
foregroundColour
Color value used for positive values of the control.
signedForegroundColour
Color value used for negative values of the control.
emptyBackgroundColour
What background color to use when the control is considered
"empty." (allow_none must be set to trigger this behavior.)
validBackgroundColour
What background color to use when the control value is
considered valid.
invalidBackgroundColour
Color value used for illegal values or values out-of-bounds of the
control when the bounds are set but the control is not limited.
autoSize
Boolean indicating whether or not the control should set its own
width based on the integer and fraction widths. True by default.
<I>Note:</I> Setting this to False will produce seemingly odd
behavior unless the control is large enough to hold the maximum
specified value given the widths and the sign positions; if not,
the control will appear to "jump around" as the contents scroll.
(ie. autoSize is highly recommended.)
--------------------------
masked.EVT_NUM(win, id, func)
Respond to a EVT_COMMAND_MASKED_NUMBER_UPDATED event, generated when
the value changes. Notice that this event will always be sent when the
control's contents changes - whether this is due to user input or
comes from the program itself (for example, if SetValue() is called.)
SetValue(int|long|float|string)
Sets the value of the control to the value specified, if
possible. The resulting actual value of the control may be
altered to conform to the format of the control, changed
to conform with the bounds set on the control if limited,
or colored if not limited but the value is out-of-bounds.
A ValueError exception will be raised if an invalid value
is specified.
GetValue()
Retrieves the numeric value from the control. The value
retrieved will be either be returned as a long if the
fractionWidth is 0, or a float otherwise.
SetParameters(\*\*kwargs)
Allows simultaneous setting of various attributes
of the control after construction. Keyword arguments
allowed are the same parameters as supported in the constructor.
SetIntegerWidth(value)
Resets the width of the integer portion of the control. The
value must be >= 1, or an AttributeError exception will result.
This value should account for any grouping characters that might
be inserted (if grouping is enabled), but does not need to account
for the sign, as that is handled separately by the control.
GetIntegerWidth()
Returns the current width of the integer portion of the control,
not including any reserved sign position.
SetFractionWidth(value)
Resets the width of the fractional portion of the control. The
value must be >= 0, or an AttributeError exception will result. If
0, the current value of the control will be truncated to an integer
value.
GetFractionWidth()
Returns the current width of the fractional portion of the control.
SetMin(min=None)
Resets the minimum value of the control. If a value of <I>None</I>
is provided, then the control will have no explicit minimum value.
If the value specified is greater than the current maximum value,
then the function returns False and the minimum will not change from
its current setting. On success, the function returns True.
If successful and the current value is lower than the new lower
bound, if the control is limited, the value will be automatically
adjusted to the new minimum value; if not limited, the value in the
control will be colored as invalid.
If min > the max value allowed by the width of the control,
the function will return False, and the min will not be set.
GetMin()
Gets the current lower bound value for the control.
It will return None if no lower bound is currently specified.
SetMax(max=None)
Resets the maximum value of the control. If a value of <I>None</I>
is provided, then the control will have no explicit maximum value.
If the value specified is less than the current minimum value, then
the function returns False and the maximum will not change from its
current setting. On success, the function returns True.
If successful and the current value is greater than the new upper
bound, if the control is limited the value will be automatically
adjusted to this maximum value; if not limited, the value in the
control will be colored as invalid.
If max > the max value allowed by the width of the control,
the function will return False, and the max will not be set.
GetMax()
Gets the current upper bound value for the control.
It will return None if no upper bound is currently specified.
SetBounds(min=None,max=None)
This function is a convenience function for setting the min and max
values at the same time. The function only applies the maximum bound
if setting the minimum bound is successful, and returns True
only if both operations succeed. <B><I>Note:</I> leaving out an argument
will remove the corresponding bound.
GetBounds()
This function returns a two-tuple (min,max), indicating the
current bounds of the control. Each value can be None if
that bound is not set.
IsInBounds(value=None)
Returns <I>True</I> if no value is specified and the current value
of the control falls within the current bounds. This function can also
be called with a value to see if that value would fall within the current
bounds of the given control.
SetLimited(bool)
If called with a value of True, this function will cause the control
to limit the value to fall within the bounds currently specified.
If the control's value currently exceeds the bounds, it will then
be limited accordingly.
If called with a value of False, this function will disable value
limiting, but coloring of out-of-bounds values will still take
place if bounds have been set for the control.
GetLimited()
IsLimited()
Returns <I>True</I> if the control is currently limiting the
value to fall within the current bounds.
SetAllowNone(bool)
If called with a value of True, this function will cause the control
to allow the value to be empty, representing a value of None.
If called with a value of False, this function will prevent the value
from being None. If the value of the control is currently None,
ie. the control is empty, then the value will be changed to that
of the lower bound of the control, or 0 if no lower bound is set.
GetAllowNone()
IsNoneAllowed()
Returns <I>True</I> if the control currently allows its
value to be None.
SetAllowNegative(bool)
If called with a value of True, this function will cause the
control to allow the value to be negative (and reserve space for
displaying the sign. If called with a value of False, and the
value of the control is currently negative, the value of the
control will be converted to the absolute value, and then
limited appropriately based on the existing bounds of the control
(if any).
GetAllowNegative()
IsNegativeAllowed()
Returns <I>True</I> if the control currently permits values
to be negative.
SetGroupDigits(bool)
If called with a value of True, this will make the control
automatically add and manage grouping characters to the presented
value in integer portion of the control.
GetGroupDigits()
IsGroupingAllowed()
Returns <I>True</I> if the control is currently set to group digits.
SetGroupChar()
Sets the grouping character for the integer portion of the
control. (The default grouping character this is ','.
GetGroupChar()
Returns the current grouping character for the control.
SetSelectOnEntry()
If called with a value of <I>True</I>, this will make the control
automatically select the contents of each field as it is entered
within the control. (The default is True.)
GetSelectOnEntry()
Returns <I>True</I> if the control currently auto selects
the field values on entry.
SetAutoSize(bool)
Resets the autoSize attribute of the control.
GetAutoSize()
Returns the current state of the autoSize attribute for the control.
"""
import copy
import string
import types
import wx
from sys import maxint
MAXINT = maxint # (constants should be in upper case)
MININT = -maxint-1
from wx.tools.dbg import Logger
from wx.lib.masked import MaskedEditMixin, Field, BaseMaskedTextCtrl
dbg = Logger()
##dbg(enable=1)
#----------------------------------------------------------------------------
wxEVT_COMMAND_MASKED_NUMBER_UPDATED = wx.NewEventType()
EVT_NUM = wx.PyEventBinder(wxEVT_COMMAND_MASKED_NUMBER_UPDATED, 1)
#----------------------------------------------------------------------------
class NumberUpdatedEvent(wx.PyCommandEvent):
"""
Used to fire an EVT_NUM event whenever the value in a NumCtrl changes.
"""
def __init__(self, id, value = 0, object=None):
wx.PyCommandEvent.__init__(self, wxEVT_COMMAND_MASKED_NUMBER_UPDATED, id)
self.__value = value
self.SetEventObject(object)
def GetValue(self):
"""Retrieve the value of the control at the time
this event was generated."""
return self.__value
#----------------------------------------------------------------------------
class NumCtrlAccessorsMixin:
"""
Defines masked.NumCtrl's list of attributes having their own
Get/Set functions, ignoring those that make no sense for
a numeric control.
"""
exposed_basectrl_params = (
'decimalChar',
'shiftDecimalChar',
'groupChar',
'useParensForNegatives',
'defaultValue',
'description',
'useFixedWidthFont',
'autoSize',
'signedForegroundColour',
'emptyBackgroundColour',
'validBackgroundColour',
'invalidBackgroundColour',
'emptyInvalid',
'validFunc',
'validRequired',
)
for param in exposed_basectrl_params:
propname = param[0].upper() + param[1:]
exec('def Set%s(self, value): self.SetCtrlParameters(%s=value)' % (propname, param))
exec('def Get%s(self): return self.GetCtrlParameter("%s")''' % (propname, param))
if param.find('Colour') != -1:
# add non-british spellings, for backward-compatibility
propname.replace('Colour', 'Color')
exec('def Set%s(self, value): self.SetCtrlParameters(%s=value)' % (propname, param))
exec('def Get%s(self): return self.GetCtrlParameter("%s")''' % (propname, param))
#----------------------------------------------------------------------------
class NumCtrl(BaseMaskedTextCtrl, NumCtrlAccessorsMixin):
"""
Masked edit control supporting "native" numeric values, ie. .SetValue(3), for
example, and supporting a variety of formatting options, including automatic
rounding specifiable precision, grouping and decimal place characters, etc.
"""
valid_ctrl_params = {
'integerWidth': 10, # by default allow all 32-bit integers
'fractionWidth': 0, # by default, use integers
'decimalChar': '.', # by default, use '.' for decimal point
'allowNegative': True, # by default, allow negative numbers
'useParensForNegatives': False, # by default, use '-' to indicate negatives
'groupDigits': True, # by default, don't insert grouping
'groupChar': ',', # by default, use ',' for grouping
'min': None, # by default, no bounds set
'max': None,
'limited': False, # by default, no limiting even if bounds set
'allowNone': False, # by default, don't allow empty value
'selectOnEntry': True, # by default, select the value of each field on entry
'foregroundColour': "Black",
'signedForegroundColour': "Red",
'emptyBackgroundColour': "White",
'validBackgroundColour': "White",
'invalidBackgroundColour': "Yellow",
'useFixedWidthFont': True, # by default, use a fixed-width font
'autoSize': True, # by default, set the width of the control based on the mask
}
def __init__ (
self, parent, id=-1, value = 0,
pos = wx.DefaultPosition, size = wx.DefaultSize,
style = wx.TE_PROCESS_TAB, validator = wx.DefaultValidator,
name = "masked.num",
**kwargs ):
## dbg('masked.NumCtrl::__init__', indent=1)
# Set defaults for control:
## dbg('setting defaults:')
for key, param_value in NumCtrl.valid_ctrl_params.items():
# This is done this way to make setattr behave consistently with
# "private attribute" name mangling
setattr(self, '_' + key, copy.copy(param_value))
# Assign defaults for all attributes:
init_args = copy.deepcopy(NumCtrl.valid_ctrl_params)
## dbg('kwargs:', kwargs)
for key, param_value in kwargs.items():
key = key.replace('Color', 'Colour')
if key not in NumCtrl.valid_ctrl_params.keys():
raise AttributeError('invalid keyword argument "%s"' % key)
else:
init_args[key] = param_value
## dbg('init_args:', indent=1)
for key, param_value in init_args.items():
## dbg('%s:' % key, param_value)
pass
## dbg(indent=0)
# Process initial fields for the control, as part of construction:
if type(init_args['integerWidth']) != types.IntType:
raise AttributeError('invalid integerWidth (%s) specified; expected integer' % repr(init_args['integerWidth']))
elif init_args['integerWidth'] < 1:
raise AttributeError('invalid integerWidth (%s) specified; must be > 0' % repr(init_args['integerWidth']))
fields = {}
if init_args.has_key('fractionWidth'):
if type(init_args['fractionWidth']) != types.IntType:
raise AttributeError('invalid fractionWidth (%s) specified; expected integer' % repr(self._fractionWidth))
elif init_args['fractionWidth'] < 0:
raise AttributeError('invalid fractionWidth (%s) specified; must be >= 0' % repr(init_args['fractionWidth']))
self._fractionWidth = init_args['fractionWidth']
if self._fractionWidth:
fracmask = '.' + '#{%d}' % self._fractionWidth
## dbg('fracmask:', fracmask)
fields[1] = Field(defaultValue='0'*self._fractionWidth)
else:
fracmask = ''
self._integerWidth = init_args['integerWidth']
if init_args['groupDigits']:
self._groupSpace = (self._integerWidth - 1) / 3
else:
self._groupSpace = 0
intmask = '#{%d}' % (self._integerWidth + self._groupSpace)
if self._fractionWidth:
emptyInvalid = False
else:
emptyInvalid = True
fields[0] = Field(formatcodes='r<>', emptyInvalid=emptyInvalid)
## dbg('intmask:', intmask)
# don't bother to reprocess these arguments:
del init_args['integerWidth']
del init_args['fractionWidth']
self._autoSize = init_args['autoSize']
if self._autoSize:
formatcodes = 'FR<'
else:
formatcodes = 'R<'
mask = intmask+fracmask
# initial value of state vars
self._oldvalue = 0
self._integerEnd = 0
self._typedSign = False
# Construct the base control:
BaseMaskedTextCtrl.__init__(
self, parent, id, '',
pos, size, style, validator, name,
mask = mask,
formatcodes = formatcodes,
fields = fields,
validFunc=self.IsInBounds,
setupEventHandling = False)
self.Bind(wx.EVT_SET_FOCUS, self._OnFocus ) ## defeat automatic full selection
self.Bind(wx.EVT_KILL_FOCUS, self._OnKillFocus ) ## run internal validator
self.Bind(wx.EVT_LEFT_DCLICK, self._OnDoubleClick) ## select field under cursor on dclick
self.Bind(wx.EVT_RIGHT_UP, self._OnContextMenu ) ## bring up an appropriate context menu
self.Bind(wx.EVT_KEY_DOWN, self._OnKeyDown ) ## capture control events not normally seen, eg ctrl-tab.
self.Bind(wx.EVT_CHAR, self._OnChar ) ## handle each keypress
self.Bind(wx.EVT_TEXT, self.OnTextChange ) ## color control appropriately & keep
## track of previous value for undo
# Establish any additional parameters, with appropriate error checking
self.SetParameters(**init_args)
# Set the value requested (if possible)
## wxCallAfter(self.SetValue, value)
self.SetValue(value)
# Ensure proper coloring:
self.Refresh()
## dbg('finished NumCtrl::__init__', indent=0)
def SetParameters(self, **kwargs):
"""
This function is used to initialize and reconfigure the control.
See TimeCtrl module overview for available parameters.
"""
## dbg('NumCtrl::SetParameters', indent=1)
maskededit_kwargs = {}
reset_fraction_width = False
if( (kwargs.has_key('integerWidth') and kwargs['integerWidth'] != self._integerWidth)
or (kwargs.has_key('fractionWidth') and kwargs['fractionWidth'] != self._fractionWidth)
or (kwargs.has_key('groupDigits') and kwargs['groupDigits'] != self._groupDigits)
or (kwargs.has_key('autoSize') and kwargs['autoSize'] != self._autoSize) ):
fields = {}
if kwargs.has_key('fractionWidth'):
if type(kwargs['fractionWidth']) != types.IntType:
raise AttributeError('invalid fractionWidth (%s) specified; expected integer' % repr(kwargs['fractionWidth']))
elif kwargs['fractionWidth'] < 0:
raise AttributeError('invalid fractionWidth (%s) specified; must be >= 0' % repr(kwargs['fractionWidth']))
else:
if self._fractionWidth != kwargs['fractionWidth']:
self._fractionWidth = kwargs['fractionWidth']
if self._fractionWidth:
fracmask = '.' + '#{%d}' % self._fractionWidth
fields[1] = Field(defaultValue='0'*self._fractionWidth)
emptyInvalid = False
else:
emptyInvalid = True
fracmask = ''
## dbg('fracmask:', fracmask)
if kwargs.has_key('integerWidth'):
if type(kwargs['integerWidth']) != types.IntType:
## dbg(indent=0)
raise AttributeError('invalid integerWidth (%s) specified; expected integer' % repr(kwargs['integerWidth']))
elif kwargs['integerWidth'] < 0:
## dbg(indent=0)
raise AttributeError('invalid integerWidth (%s) specified; must be > 0' % repr(kwargs['integerWidth']))
else:
self._integerWidth = kwargs['integerWidth']
if kwargs.has_key('groupDigits'):
self._groupDigits = kwargs['groupDigits']
if self._groupDigits:
self._groupSpace = (self._integerWidth - 1) / 3
else:
self._groupSpace = 0
intmask = '#{%d}' % (self._integerWidth + self._groupSpace)
## dbg('intmask:', intmask)
fields[0] = Field(formatcodes='r<>', emptyInvalid=emptyInvalid)
maskededit_kwargs['fields'] = fields
# don't bother to reprocess these arguments:
if kwargs.has_key('integerWidth'):
del kwargs['integerWidth']
if kwargs.has_key('fractionWidth'):
del kwargs['fractionWidth']
maskededit_kwargs['mask'] = intmask+fracmask
if kwargs.has_key('groupChar') or kwargs.has_key('decimalChar'):
old_groupchar = self._groupChar # save so we can reformat properly
old_decimalchar = self._decimalChar
## dbg("old_groupchar: '%s'" % old_groupchar)
## dbg("old_decimalchar: '%s'" % old_decimalchar)
groupchar = old_groupchar
decimalchar = old_decimalchar
if kwargs.has_key('groupChar'):
maskededit_kwargs['groupChar'] = kwargs['groupChar']
groupchar = kwargs['groupChar']
if kwargs.has_key('decimalChar'):
maskededit_kwargs['decimalChar'] = kwargs['decimalChar']
decimalchar = kwargs['decimalChar']
# Add sanity check to make sure these are distinct, and if not,
# raise attribute error
if groupchar == decimalchar:
raise AttributeError('groupChar and decimalChar must be distinct')
# for all other parameters, assign keyword args as appropriate:
for key, param_value in kwargs.items():
key = key.replace('Color', 'Colour')
if key not in NumCtrl.valid_ctrl_params.keys():
raise AttributeError('invalid keyword argument "%s"' % key)
elif key not in MaskedEditMixin.valid_ctrl_params.keys():
setattr(self, '_' + key, param_value)
elif key in ('mask', 'autoformat'): # disallow explicit setting of mask
raise AttributeError('invalid keyword argument "%s"' % key)
else:
maskededit_kwargs[key] = param_value
## dbg('kwargs:', kwargs)
# reprocess existing format codes to ensure proper resulting format:
formatcodes = self.GetCtrlParameter('formatcodes')
if kwargs.has_key('allowNegative'):
if kwargs['allowNegative'] and '-' not in formatcodes:
formatcodes += '-'
maskededit_kwargs['formatcodes'] = formatcodes
elif not kwargs['allowNegative'] and '-' in formatcodes:
formatcodes = formatcodes.replace('-','')
maskededit_kwargs['formatcodes'] = formatcodes
if kwargs.has_key('groupDigits'):
if kwargs['groupDigits'] and ',' not in formatcodes:
formatcodes += ','
maskededit_kwargs['formatcodes'] = formatcodes
elif not kwargs['groupDigits'] and ',' in formatcodes:
formatcodes = formatcodes.replace(',','')
maskededit_kwargs['formatcodes'] = formatcodes
if kwargs.has_key('selectOnEntry'):
self._selectOnEntry = kwargs['selectOnEntry']
## dbg("kwargs['selectOnEntry']?", kwargs['selectOnEntry'], "'S' in formatcodes?", 'S' in formatcodes)
if kwargs['selectOnEntry'] and 'S' not in formatcodes:
formatcodes += 'S'
maskededit_kwargs['formatcodes'] = formatcodes
elif not kwargs['selectOnEntry'] and 'S' in formatcodes:
formatcodes = formatcodes.replace('S','')
maskededit_kwargs['formatcodes'] = formatcodes
if kwargs.has_key('autoSize'):
self._autoSize = kwargs['autoSize']
if kwargs['autoSize'] and 'F' not in formatcodes:
formatcodes += 'F'
maskededit_kwargs['formatcodes'] = formatcodes
elif not kwargs['autoSize'] and 'F' in formatcodes:
formatcodes = formatcodes.replace('F', '')
maskededit_kwargs['formatcodes'] = formatcodes
if 'r' in formatcodes and self._fractionWidth:
# top-level mask should only be right insert if no fractional
# part will be shown; ie. if reconfiguring control, remove
# previous "global" setting.
formatcodes = formatcodes.replace('r', '')
maskededit_kwargs['formatcodes'] = formatcodes
if kwargs.has_key('limited'):
if kwargs['limited'] and not self._limited:
maskededit_kwargs['validRequired'] = True
elif not kwargs['limited'] and self._limited:
maskededit_kwargs['validRequired'] = False
self._limited = kwargs['limited']
## dbg('maskededit_kwargs:', maskededit_kwargs)
if maskededit_kwargs.keys():
self.SetCtrlParameters(**maskededit_kwargs)
# Go ensure all the format codes necessary are present:
orig_intformat = intformat = self.GetFieldParameter(0, 'formatcodes')
if 'r' not in intformat:
intformat += 'r'
if '>' not in intformat:
intformat += '>'
if intformat != orig_intformat:
if self._fractionWidth:
self.SetFieldParameters(0, formatcodes=intformat)
else:
self.SetCtrlParameters(formatcodes=intformat)
# Record end of integer and place cursor there unless selecting, or select entire field:
integerStart, integerEnd = self._fields[0]._extent
if not self._fields[0]._selectOnFieldEntry:
self.SetInsertionPoint(0)
self.SetInsertionPoint(integerEnd)
self.SetSelection(integerEnd, integerEnd)
else:
self.SetInsertionPoint(0) # include any sign
self.SetSelection(0, integerEnd)
# Set min and max as appropriate:
if kwargs.has_key('min'):
min = kwargs['min']
if( self._max is None
or min is None
or (self._max is not None and self._max >= min) ):
## dbg('examining min')
if min is not None:
try:
textmin = self._toGUI(min, apply_limits = False)
except ValueError:
## dbg('min will not fit into control; ignoring', indent=0)
raise
## dbg('accepted min')
self._min = min
else:
## dbg('ignoring min')
pass
if kwargs.has_key('max'):
max = kwargs['max']
if( self._min is None
or max is None
or (self._min is not None and self._min <= max) ):
## dbg('examining max')
if max is not None:
try:
textmax = self._toGUI(max, apply_limits = False)
except ValueError:
## dbg('max will not fit into control; ignoring', indent=0)
raise
## dbg('accepted max')
self._max = max
else:
## dbg('ignoring max')
pass
if kwargs.has_key('allowNegative'):
self._allowNegative = kwargs['allowNegative']
# Ensure current value of control obeys any new restrictions imposed:
text = self._GetValue()
## dbg('text value: "%s"' % text)
if kwargs.has_key('groupChar') and text.find(old_groupchar) != -1:
text = text.replace(old_groupchar, self._groupChar)
if kwargs.has_key('decimalChar') and text.find(old_decimalchar) != -1:
text = text.replace(old_decimalchar, self._decimalChar)
if text != self._GetValue():
wx.TextCtrl.SetValue(self, text)
value = self.GetValue()
## dbg('self._allowNegative?', self._allowNegative)
if not self._allowNegative and self._isNeg:
value = abs(value)
## dbg('abs(value):', value)
self._isNeg = False
elif not self._allowNone and BaseMaskedTextCtrl.GetValue(self) == '':
if self._min > 0:
value = self._min
else:
value = 0
sel_start, sel_to = self.GetSelection()
if self.IsLimited() and self._min is not None and value < self._min:
## dbg('Set to min value:', self._min)
self._SetValue(self._toGUI(self._min))
elif self.IsLimited() and self._max is not None and value > self._max:
## dbg('Setting to max value:', self._max)
self._SetValue(self._toGUI(self._max))
else:
# reformat current value as appropriate to possibly new conditions
## dbg('Reformatting value:', value)
sel_start, sel_to = self.GetSelection()
self._SetValue(self._toGUI(value))
self.Refresh() # recolor as appropriate
## dbg('finished NumCtrl::SetParameters', indent=0)
def _GetNumValue(self, value):
"""
This function attempts to "clean up" a text value, providing a regularized
convertable string, via atol() or atof(), for any well-formed numeric text value.
"""
return value.replace(self._groupChar, '').replace(self._decimalChar, '.').replace('(', '-').replace(')','').strip()
def GetFraction(self, candidate=None):
"""
Returns the fractional portion of the value as a float. If there is no
fractional portion, the value returned will be 0.0.
"""
if not self._fractionWidth:
return 0.0
else:
fracstart, fracend = self._fields[1]._extent
if candidate is None:
value = self._toGUI(BaseMaskedTextCtrl.GetValue(self))
else:
value = self._toGUI(candidate)
fracstring = value[fracstart:fracend].strip()
if not value:
return 0.0
else:
return string.atof(fracstring)
def _OnChangeSign(self, event):
## dbg('NumCtrl::_OnChangeSign', indent=1)
self._typedSign = True
MaskedEditMixin._OnChangeSign(self, event)
## dbg(indent=0)
def _disallowValue(self):
## dbg('NumCtrl::_disallowValue')
# limited and -1 is out of bounds
if self._typedSign:
self._isNeg = False
if not wx.Validator_IsSilent():
wx.Bell()
sel_start, sel_to = self._GetSelection()
## dbg('queuing reselection of (%d, %d)' % (sel_start, sel_to))
wx.CallAfter(self.SetInsertionPoint, sel_start) # preserve current selection/position
wx.CallAfter(self.SetSelection, sel_start, sel_to)
def _SetValue(self, value):
"""
This routine supersedes the base masked control _SetValue(). It is
needed to ensure that the value of the control is always representable/convertable
to a numeric return value (via GetValue().) This routine also handles
automatic adjustment and grouping of the value without explicit intervention
by the user.
"""
## dbg('NumCtrl::_SetValue("%s")' % value, indent=1)
if( (self._fractionWidth and value.find(self._decimalChar) == -1) or
(self._fractionWidth == 0 and value.find(self._decimalChar) != -1) ) :
value = self._toGUI(value)
numvalue = self._GetNumValue(value)
## dbg('cleansed value: "%s"' % numvalue)
replacement = None
if numvalue == "":
if self._allowNone:
## dbg('calling base BaseMaskedTextCtrl._SetValue(self, "%s")' % value)
BaseMaskedTextCtrl._SetValue(self, value)
self.Refresh()
return
elif self._min > 0 and self.IsLimited():
replacement = self._min
else:
replacement = 0
## dbg('empty value; setting replacement:', replacement)
if replacement is None:
# Go get the integer portion about to be set and verify its validity
intstart, intend = self._fields[0]._extent
## dbg('intstart, intend:', intstart, intend)
## dbg('raw integer:"%s"' % value[intstart:intend])
int = self._GetNumValue(value[intstart:intend])
numval = self._fromGUI(value)
## dbg('integer: "%s"' % int)
try:
fracval = self.GetFraction(value)
except ValueError, e:
## dbg('Exception:', e, 'must be out of bounds; disallow value')
self._disallowValue()
## dbg(indent=0)
return
if fracval == 0.0:
## dbg('self._isNeg?', self._isNeg)
if int == '-' and self._oldvalue < 0 and not self._typedSign:
## dbg('just a negative sign; old value < 0; setting replacement of 0')
replacement = 0
self._isNeg = False
elif int[:2] == '-0' and self._fractionWidth == 0:
if self._oldvalue < 0:
## dbg('-0; setting replacement of 0')
replacement = 0
self._isNeg = False
elif not self._limited or (self._min < -1 and self._max >= -1):
## dbg('-0; setting replacement of -1')
replacement = -1
self._isNeg = True
else:
# limited and -1 is out of bounds
self._disallowValue()
## dbg(indent=0)
return
elif int == '-' and (self._oldvalue >= 0 or self._typedSign) and self._fractionWidth == 0:
if not self._limited or (self._min < -1 and self._max >= -1):
## dbg('just a negative sign; setting replacement of -1')
replacement = -1
else:
# limited and -1 is out of bounds
self._disallowValue()
## dbg(indent=0)
return
elif( self._typedSign
and int.find('-') != -1
and self._limited
and not self._min <= numval <= self._max):
# changed sign resulting in value that's now out-of-bounds;
# disallow
self._disallowValue()
## dbg(indent=0)
return
if replacement is None:
if int and int != '-':
try:
string.atol(int)
except ValueError:
# integer requested is not legal. This can happen if the user
# is attempting to insert a digit in the middle of the control
# resulting in something like " 3 45". Disallow such actions:
## dbg('>>>>>>>>>>>>>>>> "%s" does not convert to a long!' % int)
if not wx.Validator_IsSilent():
wx.Bell()
sel_start, sel_to = self._GetSelection()
## dbg('queuing reselection of (%d, %d)' % (sel_start, sel_to))
wx.CallAfter(self.SetInsertionPoint, sel_start) # preserve current selection/position
wx.CallAfter(self.SetSelection, sel_start, sel_to)
## dbg(indent=0)
return
if int[0] == '0' and len(int) > 1:
## dbg('numvalue: "%s"' % numvalue.replace(' ', ''))
if self._fractionWidth:
value = self._toGUI(string.atof(numvalue))
else:
value = self._toGUI(string.atol(numvalue))
## dbg('modified value: "%s"' % value)
self._typedSign = False # reset state var
if replacement is not None:
# Value presented wasn't a legal number, but control should do something
# reasonable instead:
## dbg('setting replacement value:', replacement)
self._SetValue(self._toGUI(replacement))
sel_start = BaseMaskedTextCtrl.GetValue(self).find(str(abs(replacement))) # find where it put the 1, so we can select it
sel_to = sel_start + len(str(abs(replacement)))
## dbg('queuing selection of (%d, %d)' %(sel_start, sel_to))
wx.CallAfter(self.SetInsertionPoint, sel_start)
wx.CallAfter(self.SetSelection, sel_start, sel_to)
## dbg(indent=0)
return
# Otherwise, apply appropriate formatting to value:
# Because we're intercepting the value and adjusting it
# before a sign change is detected, we need to do this here:
if '-' in value or '(' in value:
self._isNeg = True
else:
self._isNeg = False
## dbg('value:"%s"' % value, 'self._useParens:', self._useParens)
if self._fractionWidth:
adjvalue = self._adjustFloat(self._GetNumValue(value).replace('.',self._decimalChar))
else:
adjvalue = self._adjustInt(self._GetNumValue(value))
## dbg('adjusted value: "%s"' % adjvalue)
sel_start, sel_to = self._GetSelection() # record current insertion point
## dbg('calling BaseMaskedTextCtrl._SetValue(self, "%s")' % adjvalue)
BaseMaskedTextCtrl._SetValue(self, adjvalue)
# After all actions so far scheduled, check that resulting cursor
# position is appropriate, and move if not:
wx.CallAfter(self._CheckInsertionPoint)
## dbg('finished NumCtrl::_SetValue', indent=0)
def _CheckInsertionPoint(self):
# If current insertion point is before the end of the integer and
# its before the 1st digit, place it just after the sign position:
## dbg('NumCtrl::CheckInsertionPoint', indent=1)
sel_start, sel_to = self._GetSelection()
text = self._GetValue()
if sel_to < self._fields[0]._extent[1] and text[sel_to] in (' ', '-', '('):
text, signpos, right_signpos = self._getSignedValue()
## dbg('setting selection(%d, %d)' % (signpos+1, signpos+1))
self.SetInsertionPoint(signpos+1)
self.SetSelection(signpos+1, signpos+1)
## dbg(indent=0)
def _OnErase( self, event=None, just_return_value=False ):
"""
This overrides the base control _OnErase, so that erasing around
grouping characters auto selects the digit before or after the
grouping character, so that the erasure does the right thing.
"""
## dbg('NumCtrl::_OnErase', indent=1)
if event is None: # called as action routine from Cut() operation.
key = wx.WXK_DELETE
else:
key = event.GetKeyCode()
#if grouping digits, make sure deletes next to group char always
# delete next digit to appropriate side:
if self._groupDigits:
value = BaseMaskedTextCtrl.GetValue(self)
sel_start, sel_to = self._GetSelection()
if key == wx.WXK_BACK:
# if 1st selected char is group char, select to previous digit
if sel_start > 0 and sel_start < len(self._mask) and value[sel_start:sel_to] == self._groupChar:
self.SetInsertionPoint(sel_start-1)
self.SetSelection(sel_start-1, sel_to)
# elif previous char is group char, select to previous digit
elif sel_start > 1 and sel_start == sel_to and value[sel_start-1:sel_start] == self._groupChar:
self.SetInsertionPoint(sel_start-2)
self.SetSelection(sel_start-2, sel_to)
elif key == wx.WXK_DELETE:
if( sel_to < len(self._mask) - 2 + (1 *self._useParens)
and sel_start == sel_to
and value[sel_to] == self._groupChar ):
self.SetInsertionPoint(sel_start)
self.SetSelection(sel_start, sel_to+2)
elif( sel_to < len(self._mask) - 2 + (1 *self._useParens)
and value[sel_start:sel_to] == self._groupChar ):
self.SetInsertionPoint(sel_start)
self.SetSelection(sel_start, sel_to+1)
## dbg(indent=0)
return BaseMaskedTextCtrl._OnErase(self, event, just_return_value)
def OnTextChange( self, event ):
"""
Handles an event indicating that the text control's value
has changed, and issue EVT_NUM event.
NOTE: using wxTextCtrl.SetValue() to change the control's
contents from within a EVT_CHAR handler can cause double
text events. So we check for actual changes to the text
before passing the events on.
"""
## dbg('NumCtrl::OnTextChange', indent=1)
if not BaseMaskedTextCtrl._OnTextChange(self, event):
## dbg(indent=0)
return
# else... legal value
value = self.GetValue()
if value != self._oldvalue:
try:
self.GetEventHandler().ProcessEvent(
NumberUpdatedEvent( self.GetId(), self.GetValue(), self ) )
except ValueError:
## dbg(indent=0)
return
# let normal processing of the text continue
event.Skip()
self._oldvalue = value # record for next event
## dbg(indent=0)
def _GetValue(self):
"""
Override of BaseMaskedTextCtrl to allow mixin to get the raw text value of the
control with this function.
"""
return wx.TextCtrl.GetValue(self)
def GetValue(self):
"""
Returns the current numeric value of the control.
"""
return self._fromGUI( BaseMaskedTextCtrl.GetValue(self) )
def SetValue(self, value):
"""
Sets the value of the control to the value specified.
The resulting actual value of the control may be altered to
conform with the bounds set on the control if limited,
or colored if not limited but the value is out-of-bounds.
A ValueError exception will be raised if an invalid value
is specified.
"""
## dbg('NumCtrl::SetValue(%s)' % value, indent=1)
BaseMaskedTextCtrl.SetValue( self, self._toGUI(value) )
## dbg(indent=0)
def SetIntegerWidth(self, value):
self.SetParameters(integerWidth=value)
def GetIntegerWidth(self):
return self._integerWidth
def SetFractionWidth(self, value):
self.SetParameters(fractionWidth=value)
def GetFractionWidth(self):
return self._fractionWidth
def SetMin(self, min=None):
"""
Sets the minimum value of the control. If a value of None
is provided, then the control will have no explicit minimum value.
If the value specified is greater than the current maximum value,
then the function returns False and the minimum will not change from
its current setting. On success, the function returns True.
If successful and the current value is lower than the new lower
bound, if the control is limited, the value will be automatically
adjusted to the new minimum value; if not limited, the value in the
control will be colored as invalid.
If min > the max value allowed by the width of the control,
the function will return False, and the min will not be set.
"""
## dbg('NumCtrl::SetMin(%s)' % repr(min), indent=1)
if( self._max is None
or min is None
or (self._max is not None and self._max >= min) ):
try:
self.SetParameters(min=min)
bRet = True
except ValueError:
bRet = False
else:
bRet = False
## dbg(indent=0)
return bRet
def GetMin(self):
"""
Gets the lower bound value of the control. It will return
None if not specified.
"""
return self._min
def SetMax(self, max=None):
"""
Sets the maximum value of the control. If a value of None
is provided, then the control will have no explicit maximum value.
If the value specified is less than the current minimum value, then
the function returns False and the maximum will not change from its
current setting. On success, the function returns True.
If successful and the current value is greater than the new upper
bound, if the control is limited the value will be automatically
adjusted to this maximum value; if not limited, the value in the
control will be colored as invalid.
If max > the max value allowed by the width of the control,
the function will return False, and the max will not be set.
"""
if( self._min is None
or max is None
or (self._min is not None and self._min <= max) ):
try:
self.SetParameters(max=max)
bRet = True
except ValueError:
bRet = False
else:
bRet = False
return bRet
def GetMax(self):
"""
Gets the maximum value of the control. It will return the current
maximum integer, or None if not specified.
"""
return self._max
def SetBounds(self, min=None, max=None):
"""
This function is a convenience function for setting the min and max
values at the same time. The function only applies the maximum bound
if setting the minimum bound is successful, and returns True
only if both operations succeed.
NOTE: leaving out an argument will remove the corresponding bound.
"""
ret = self.SetMin(min)
return ret and self.SetMax(max)
def GetBounds(self):
"""
This function returns a two-tuple (min,max), indicating the
current bounds of the control. Each value can be None if
that bound is not set.
"""
return (self._min, self._max)
def SetLimited(self, limited):
"""
If called with a value of True, this function will cause the control
to limit the value to fall within the bounds currently specified.
If the control's value currently exceeds the bounds, it will then
be limited accordingly.
If called with a value of False, this function will disable value
limiting, but coloring of out-of-bounds values will still take
place if bounds have been set for the control.
"""
self.SetParameters(limited = limited)
def IsLimited(self):
"""
Returns True if the control is currently limiting the
value to fall within the current bounds.
"""
return self._limited
def GetLimited(self):
""" (For regularization of property accessors) """
return self.IsLimited
def IsInBounds(self, value=None):
"""
Returns True if no value is specified and the current value
of the control falls within the current bounds. This function can
also be called with a value to see if that value would fall within
the current bounds of the given control.
"""
## dbg('IsInBounds(%s)' % repr(value), indent=1)
if value is None:
value = self.GetValue()
else:
try:
value = self._GetNumValue(self._toGUI(value))
except ValueError, e:
## dbg('error getting NumValue(self._toGUI(value)):', e, indent=0)
return False
if value.strip() == '':
value = None
elif self._fractionWidth:
value = float(value)
else:
value = long(value)
min = self.GetMin()
max = self.GetMax()
if min is None: min = value
if max is None: max = value
# if bounds set, and value is None, return False
if value == None and (min is not None or max is not None):
## dbg('finished IsInBounds', indent=0)
return 0
else:
## dbg('finished IsInBounds', indent=0)
return min <= value <= max
def SetAllowNone(self, allow_none):
"""
Change the behavior of the validation code, allowing control
to have a value of None or not, as appropriate. If the value
of the control is currently None, and allow_none is False, the
value of the control will be set to the minimum value of the
control, or 0 if no lower bound is set.
"""
self._allowNone = allow_none
if not allow_none and self.GetValue() is None:
min = self.GetMin()
if min is not None: self.SetValue(min)
else: self.SetValue(0)
def IsNoneAllowed(self):
return self._allowNone
def GetAllowNone(self):
""" (For regularization of property accessors) """
return self.IsNoneAllowed()
def SetAllowNegative(self, value):
self.SetParameters(allowNegative=value)
def IsNegativeAllowed(self):
return self._allowNegative
def GetAllowNegative(self):
""" (For regularization of property accessors) """
return self.IsNegativeAllowed()
def SetGroupDigits(self, value):
self.SetParameters(groupDigits=value)
def IsGroupingAllowed(self):
return self._groupDigits
def GetGroupDigits(self):
""" (For regularization of property accessors) """
return self.IsGroupingAllowed()
def SetGroupChar(self, value):
self.SetParameters(groupChar=value)
def GetGroupChar(self):
return self._groupChar
def SetDecimalChar(self, value):
self.SetParameters(decimalChar=value)
def GetDecimalChar(self):
return self._decimalChar
def SetSelectOnEntry(self, value):
self.SetParameters(selectOnEntry=value)
def GetSelectOnEntry(self):
return self._selectOnEntry
def SetAutoSize(self, value):
self.SetParameters(autoSize=value)
def GetAutoSize(self):
return self._autoSize
# (Other parameter accessors are inherited from base class)
def _toGUI( self, value, apply_limits = True ):
"""
Conversion function used to set the value of the control; does
type and bounds checking and raises ValueError if argument is
not a valid value.
"""
## dbg('NumCtrl::_toGUI(%s)' % repr(value), indent=1)
if value is None and self.IsNoneAllowed():
## dbg(indent=0)
return self._template
elif type(value) in (types.StringType, types.UnicodeType):
value = self._GetNumValue(value)
## dbg('cleansed num value: "%s"' % value)
if value == "":
if self.IsNoneAllowed():
## dbg(indent=0)
return self._template
else:
## dbg('exception raised:', e, indent=0)
raise ValueError ('NumCtrl requires numeric value, passed %s'% repr(value) )
# else...
try:
if self._fractionWidth or value.find('.') != -1:
value = float(value)
else:
value = long(value)
except Exception, e:
## dbg('exception raised:', e, indent=0)
raise ValueError ('NumCtrl requires numeric value, passed %s'% repr(value) )
elif type(value) not in (types.IntType, types.LongType, types.FloatType):
## dbg(indent=0)
raise ValueError (
'NumCtrl requires numeric value, passed %s'% repr(value) )
if not self._allowNegative and value < 0:
raise ValueError (
'control configured to disallow negative values, passed %s'% repr(value) )
if self.IsLimited() and apply_limits:
min = self.GetMin()
max = self.GetMax()
if not min is None and value < min:
## dbg(indent=0)
raise ValueError (
'value %d is below minimum value of control'% value )
if not max is None and value > max:
## dbg(indent=0)
raise ValueError (
'value %d exceeds value of control'% value )
adjustwidth = len(self._mask) - (1 * self._useParens * self._signOk)
## dbg('len(%s):' % self._mask, len(self._mask))
## dbg('adjustwidth - groupSpace:', adjustwidth - self._groupSpace)
## dbg('adjustwidth:', adjustwidth)
if self._fractionWidth == 0:
s = str(long(value)).rjust(self._integerWidth)
else:
format = '%' + '%d.%df' % (self._integerWidth+self._fractionWidth+1, self._fractionWidth)
s = format % float(value)
## dbg('s:"%s"' % s, 'len(s):', len(s))
if len(s) > (adjustwidth - self._groupSpace):
## dbg(indent=0)
raise ValueError ('value %s exceeds the integer width of the control (%d)' % (s, self._integerWidth))
elif s[0] not in ('-', ' ') and self._allowNegative and len(s) == (adjustwidth - self._groupSpace):
## dbg(indent=0)
raise ValueError ('value %s exceeds the integer width of the control (%d)' % (s, self._integerWidth))
s = s.rjust(adjustwidth).replace('.', self._decimalChar)
if self._signOk and self._useParens:
if s.find('-') != -1:
s = s.replace('-', '(') + ')'
else:
s += ' '
## dbg('returned: "%s"' % s, indent=0)
return s
def _fromGUI( self, value ):
"""
Conversion function used in getting the value of the control.
"""
## dbg(suspend=0)
## dbg('NumCtrl::_fromGUI(%s)' % value, indent=1)
# One or more of the underlying text control implementations
# issue an intermediate EVT_TEXT when replacing the control's
# value, where the intermediate value is an empty string.
# So, to ensure consistency and to prevent spurious ValueErrors,
# we make the following test, and react accordingly:
#
if value.strip() == '':
if not self.IsNoneAllowed():
## dbg('empty value; not allowed,returning 0', indent = 0)
if self._fractionWidth:
return 0.0
else:
return 0
else:
## dbg('empty value; returning None', indent = 0)
return None
else:
value = self._GetNumValue(value)
## dbg('Num value: "%s"' % value)
if self._fractionWidth:
try:
## dbg(indent=0)
return float( value )
except ValueError:
## dbg("couldn't convert to float; returning None")
return None
else:
raise
else:
try:
## dbg(indent=0)
return int( value )
except ValueError:
try:
## dbg(indent=0)
return long( value )
except ValueError:
## dbg("couldn't convert to long; returning None")
return None
else:
raise
else:
## dbg('exception occurred; returning None')
return None
def _Paste( self, value=None, raise_on_invalid=False, just_return_value=False ):
"""
Preprocessor for base control paste; if value needs to be right-justified
to fit in control, do so prior to paste:
"""
## dbg('NumCtrl::_Paste (value = "%s")' % value, indent=1)
if value is None:
paste_text = self._getClipboardContents()
else:
paste_text = value
sel_start, sel_to = self._GetSelection()
orig_sel_start = sel_start
orig_sel_to = sel_to
## dbg('selection:', (sel_start, sel_to))
old_value = self._GetValue()
#
field = self._FindField(sel_start)
edit_start, edit_end = field._extent
paste_text = paste_text.replace(self._groupChar, '').replace('(', '-').replace(')','')
if field._insertRight and self._groupDigits:
# want to paste to the left; see if it will fit:
left_text = old_value[edit_start:sel_start].lstrip()
## dbg('len(left_text):', len(left_text))
## dbg('len(paste_text):', len(paste_text))
## dbg('sel_start - (len(left_text) + len(paste_text)) >= edit_start?', sel_start - (len(left_text) + len(paste_text)) >= edit_start)
if sel_start - (len(left_text) + len(paste_text)) >= edit_start:
# will fit! create effective paste text, and move cursor back to do so:
paste_text = left_text + paste_text
sel_start -= len(paste_text)
sel_start += sel_to - orig_sel_start # decrease by amount selected
else:
## dbg("won't fit left;", 'paste text remains: "%s"' % paste_text)
## dbg('adjusted start before accounting for grouping:', sel_start)
## dbg('adjusted paste_text before accounting for grouping: "%s"' % paste_text)
pass
if self._groupDigits and sel_start != orig_sel_start:
left_len = len(old_value[:sel_to].lstrip())
# remove group chars from adjusted paste string, and left pad to wipe out
# old characters, so that selection will remove the right chars, and
# readjust will do the right thing:
paste_text = paste_text.replace(self._groupChar,'')
adjcount = left_len - len(paste_text)
paste_text = ' ' * adjcount + paste_text
sel_start = sel_to - len(paste_text)
## dbg('adjusted start after accounting for grouping:', sel_start)
## dbg('adjusted paste_text after accounting for grouping: "%s"' % paste_text)
self.SetInsertionPoint(sel_to)
self.SetSelection(sel_start, sel_to)
new_text, replace_to = MaskedEditMixin._Paste(self,
paste_text,
raise_on_invalid=raise_on_invalid,
just_return_value=True)
self._SetInsertionPoint(orig_sel_to)
self._SetSelection(orig_sel_start, orig_sel_to)
if not just_return_value and new_text is not None:
if new_text != self._GetValue():
self.modified = True
if new_text == '':
self.ClearValue()
else:
wx.CallAfter(self._SetValue, new_text)
wx.CallAfter(self._SetInsertionPoint, replace_to)
## dbg(indent=0)
else:
## dbg(indent=0)
return new_text, replace_to
def _Undo(self, value=None, prev=None):
'''numctrl's undo is more complicated than the base control's, due to
grouping characters; we don't want to consider them when calculating
the undone portion.'''
## dbg('NumCtrl::_Undo', indent=1)
if value is None: value = self._GetValue()
if prev is None: prev = self._prevValue
if not self._groupDigits:
ignore, (new_sel_start, new_sel_to) = BaseMaskedTextCtrl._Undo(self, value, prev, just_return_results = True)
self._SetValue(prev)
self._SetInsertionPoint(new_sel_start)
self._SetSelection(new_sel_start, new_sel_to)
self._prevSelection = (new_sel_start, new_sel_to)
## dbg('resetting "prev selection" to', self._prevSelection)
## dbg(indent=0)
return
# else...
sel_start, sel_to = self._prevSelection
edit_start, edit_end = self._FindFieldExtent(0)
adjvalue = self._GetNumValue(value).rjust(self._masklength)
adjprev = self._GetNumValue(prev ).rjust(self._masklength)
# move selection to account for "ungrouped" value:
left_text = value[sel_start:].lstrip()
numleftgroups = len(left_text) - len(left_text.replace(self._groupChar, ''))
adjsel_start = sel_start + numleftgroups
right_text = value[sel_to:].lstrip()
numrightgroups = len(right_text) - len(right_text.replace(self._groupChar, ''))
adjsel_to = sel_to + numrightgroups
## dbg('adjusting "previous" selection from', (sel_start, sel_to), 'to:', (adjsel_start, adjsel_to))
self._prevSelection = (adjsel_start, adjsel_to)
# determine appropriate selection for ungrouped undo
ignore, (new_sel_start, new_sel_to) = BaseMaskedTextCtrl._Undo(self, adjvalue, adjprev, just_return_results = True)
# adjust new selection based on grouping:
left_len = edit_end - new_sel_start
numleftgroups = left_len / 3
new_sel_start -= numleftgroups
if numleftgroups and left_len % 3 == 0:
new_sel_start += 1
if new_sel_start < self._masklength and prev[new_sel_start] == self._groupChar:
new_sel_start += 1
right_len = edit_end - new_sel_to
numrightgroups = right_len / 3
new_sel_to -= numrightgroups
if new_sel_to and prev[new_sel_to-1] == self._groupChar:
new_sel_to -= 1
if new_sel_start > new_sel_to:
new_sel_to = new_sel_start
# for numbers, we don't care about leading whitespace; adjust selection if
# it includes leading space.
prev_stripped = prev.lstrip()
prev_start = self._masklength - len(prev_stripped)
if new_sel_start < prev_start:
new_sel_start = prev_start
## dbg('adjusted selection accounting for grouping:', (new_sel_start, new_sel_to))
self._SetValue(prev)
self._SetInsertionPoint(new_sel_start)
self._SetSelection(new_sel_start, new_sel_to)
self._prevSelection = (new_sel_start, new_sel_to)
## dbg('resetting "prev selection" to', self._prevSelection)
## dbg(indent=0)
#===========================================================================
if __name__ == '__main__':
import traceback
class myDialog(wx.Dialog):
def __init__(self, parent, id, title,
pos = wx.DefaultPosition, size = wx.DefaultSize,
style = wx.DEFAULT_DIALOG_STYLE ):
wx.Dialog.__init__(self, parent, id, title, pos, size, style)
self.int_ctrl = NumCtrl(self, wx.NewId(), size=(55,20))
self.OK = wx.Button( self, wx.ID_OK, "OK")
self.Cancel = wx.Button( self, wx.ID_CANCEL, "Cancel")
vs = wx.BoxSizer( wx.VERTICAL )
vs.Add( self.int_ctrl, 0, wx.ALIGN_CENTRE|wx.ALL, 5 )
hs = wx.BoxSizer( wx.HORIZONTAL )
hs.Add( self.OK, 0, wx.ALIGN_CENTRE|wx.ALL, 5 )
hs.Add( self.Cancel, 0, wx.ALIGN_CENTRE|wx.ALL, 5 )
vs.Add(hs, 0, wx.ALIGN_CENTRE|wx.ALL, 5 )
self.SetAutoLayout( True )
self.SetSizer( vs )
vs.Fit( self )
vs.SetSizeHints( self )
self.Bind(EVT_NUM, self.OnChange, self.int_ctrl)
def OnChange(self, event):
print 'value now', event.GetValue()
class TestApp(wx.App):
def OnInit(self):
try:
self.frame = wx.Frame(None, -1, "Test", (20,20), (120,100) )
self.panel = wx.Panel(self.frame, -1)
button = wx.Button(self.panel, -1, "Push Me", (20, 20))
self.Bind(wx.EVT_BUTTON, self.OnClick, button)
except:
traceback.print_exc()
return False
return True
def OnClick(self, event):
dlg = myDialog(self.panel, -1, "test NumCtrl")
dlg.int_ctrl.SetValue(501)
dlg.int_ctrl.SetInsertionPoint(1)
dlg.int_ctrl.SetSelection(1,2)
rc = dlg.ShowModal()
print 'final value', dlg.int_ctrl.GetValue()
del dlg
self.frame.Destroy()
def Show(self):
self.frame.Show(True)
try:
app = TestApp(0)
app.Show()
app.MainLoop()
except:
traceback.print_exc()
__i=0
## To-Do's:
## =============================##
## 1. Add support for printf-style format specification.
## 2. Add option for repositioning on 'illegal' insertion point.
##
## Version 1.2
## 1. Allowed select/replace digits.
## 2. Fixed undo to ignore grouping chars.
##
## Version 1.1
## 1. Fixed .SetIntegerWidth() and .SetFractionWidth() functions.
## 2. Added autoSize parameter, to allow manual sizing of the control.
## 3. Changed inheritance to use wxBaseMaskedTextCtrl, to remove exposure of
## nonsensical parameter methods from the control, so it will work
## properly with Boa.
## 4. Fixed allowNone bug found by user sameerc1@grandecom.net
##
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