appypod-rattail/fields/float.py

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# ------------------------------------------------------------------------------
# This file is part of Appy, a framework for building applications in the Python
# language. Copyright (C) 2007 Gaetan Delannay
# Appy is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 3 of the License, or (at your option) any later
# version.
# Appy is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
# You should have received a copy of the GNU General Public License along with
# Appy. If not, see <http://www.gnu.org/licenses/>.
# ------------------------------------------------------------------------------
from appy.fields import Field
from appy.px import Px
from appy.shared import utils as sutils
# ------------------------------------------------------------------------------
class Float(Field):
allowedDecimalSeps = (',', '.')
allowedThousandsSeps = (' ', '')
pxView = pxCell = Px('''
<x><x>:value</x>
<input type="hidden" if="masterCss" class=":masterCss" value=":value"
name=":name" id=":name"/>
</x>''')
pxEdit = Px('''
<input id=":name" name=":name" size=":field.width"
maxlength=":field.maxChars"
value=":inRequest and requestValue or value" type="text"/>''')
pxSearch = Px('''<x>
<label>:_(field.labelId)"></label><br/>&nbsp;&nbsp;
<!-- From -->
<x var="fromName='%s*float' % widgetName">
<label lfor=":fromName">:_('search_from')"></label>
<input type="text" name=":fromName" maxlength=":field.maxChars"
value=":field.sdefault[0]" size=":field.swidth"/>
</x>
<!-- To -->
<x var="toName='%s_to' % name">
<label lfor=":toName">:_('search_to')</label>
<input type="text" name=":toName" maxlength=":field.maxChars"
value=":field.sdefault[1]" size="field.swidth"/>
</x><br/>
</x>''')
def __init__(self, validator=None, multiplicity=(0,1), default=None,
show=True, page='main', group=None, layouts=None, move=0,
indexed=False, searchable=False, specificReadPermission=False,
specificWritePermission=False, width=5, height=None,
maxChars=13, colspan=1, master=None, masterValue=None,
focus=False, historized=False, mapping=None, label=None,
sdefault=('',''), scolspan=1, swidth=None, sheight=None,
precision=None, sep=(',', '.'), tsep=' '):
# The precision is the number of decimal digits. This number is used
# for rendering the float, but the internal float representation is not
# rounded.
self.precision = precision
# The decimal separator can be a tuple if several are allowed, ie
# ('.', ',')
if type(sep) not in sutils.sequenceTypes:
self.sep = (sep,)
else:
self.sep = sep
# Check that the separator(s) are among allowed decimal separators
for sep in self.sep:
if sep not in Float.allowedDecimalSeps:
raise Exception('Char "%s" is not allowed as decimal ' \
'separator.' % sep)
self.tsep = tsep
Field.__init__(self, validator, multiplicity, default, show, page,
group, layouts, move, indexed, False,
specificReadPermission, specificWritePermission, width,
height, maxChars, colspan, master, masterValue, focus,
historized, True, mapping, label, sdefault, scolspan,
swidth, sheight)
self.pythonType = float
def getFormattedValue(self, obj, value, showChanges=False):
return sutils.formatNumber(value, sep=self.sep[0],
precision=self.precision, tsep=self.tsep)
def validateValue(self, obj, value):
# Replace used separator with the Python separator '.'
for sep in self.sep: value = value.replace(sep, '.')
value = value.replace(self.tsep, '')
try:
value = self.pythonType(value)
except ValueError:
return obj.translate('bad_%s' % self.pythonType.__name__)
def getStorableValue(self, value):
if not self.isEmptyValue(value):
for sep in self.sep: value = value.replace(sep, '.')
value = value.replace(self.tsep, '')
return self.pythonType(value)
# ------------------------------------------------------------------------------