Source code for openassembly.pirate_core.widgets

import re
from django.forms.extras.widgets import SelectDateWidget
from django.forms.widgets import Widget, Select, MultiWidget
from django.utils.safestring import mark_safe
from django import forms
from django.forms.widgets import DateInput, TextInput
from time import strftime

__all__ = ('SelectTimeWidget', 'SplitSelectDateTimeWidget')

# Attempt to match many time formats:
# Example: "12:34:56 P.M."  matches:
# ('12', '34', ':56', '56', 'P.M.', 'P', '.', 'M', '.')
# ('12', '34', ':56', '56', 'P.M.')
# Note that the colon ":" before seconds is optional, but only if seconds are omitted
time_pattern = r'(\d\d?):(\d\d)(:(\d\d))? *([aApP]\.?[mM]\.?)?$'

RE_TIME = re.compile(time_pattern)
# The following are just more readable ways to access re.matched groups:
HOURS = 0
MINUTES = 1
SECONDS = 3
MERIDIEM = 4

[docs]class SelectTimeWidget(Widget): """ A Widget that splits time input into <select> elements. Allows form to show as 24hr: <hour>:<minute>:<second>, (default) or as 12hr: <hour>:<minute>:<second> <am|pm> Also allows user-defined increments for minutes/seconds """ hour_field = '%s_hour' minute_field = '%s_minute' second_field = '%s_second' meridiem_field = '%s_meridiem' twelve_hr = False # Default to 24hr. def __init__(self, attrs=None, hour_step=None, minute_step=None, second_step=None, twelve_hr=False): """ hour_step, minute_step, second_step are optional step values for for the range of values for the associated select element twelve_hr: If True, forces the output to be in 12-hr format (rather than 24-hr) """ self.attrs = attrs or {} if twelve_hr: self.twelve_hr = True # Do 12hr (rather than 24hr) self.meridiem_val = 'a.m.' # Default to Morning (A.M.) if hour_step and twelve_hr: self.hours = range(1,13,hour_step) elif hour_step: # 24hr, with stepping. self.hours = range(0,24,hour_step) elif twelve_hr: # 12hr, no stepping self.hours = range(1,13) else: # 24hr, no stepping self.hours = range(0,24) if minute_step: self.minutes = range(0,60,minute_step) else: self.minutes = range(0,60) if second_step: self.seconds = range(0,60,second_step) else: self.seconds = range(0,60)
[docs] def render(self, name, value, attrs=None): try: # try to get time values from a datetime.time object (value) hour_val, minute_val, second_val = value.hour, value.minute, value.second if self.twelve_hr: if hour_val >= 12: self.meridiem_val = 'p.m.' else: self.meridiem_val = 'a.m.' except AttributeError: hour_val = minute_val = second_val = 0 if isinstance(value, basestring): match = RE_TIME.match(value) if match: time_groups = match.groups(); hour_val = int(time_groups[HOURS]) % 24 # force to range(0-24) minute_val = int(time_groups[MINUTES]) if time_groups[SECONDS] is None: second_val = 0 else: second_val = int(time_groups[SECONDS]) # check to see if meridiem was passed in if time_groups[MERIDIEM] is not None: self.meridiem_val = time_groups[MERIDIEM] else: # otherwise, set the meridiem based on the time if self.twelve_hr: if hour_val >= 12: self.meridiem_val = 'p.m.' else: self.meridiem_val = 'a.m.' else: self.meridiem_val = None # If we're doing a 12-hr clock, there will be a meridiem value, so make sure the # hours get printed correctly if self.twelve_hr and self.meridiem_val: if self.meridiem_val.lower().startswith('p') and hour_val > 12 and hour_val < 24: hour_val = hour_val % 12 elif hour_val == 0: hour_val = 12 output = [] if 'id' in self.attrs: id_ = self.attrs['id'] else: id_ = 'id_%s' % name # For times to get displayed correctly, the values MUST be converted to unicode # When Select builds a list of options, it checks against Unicode values hour_val = u"%.2d" % hour_val minute_val = u"%.2d" % minute_val second_val = u"%.2d" % second_val hour_choices = [("%.2d"%i, "%.2d"%i) for i in self.hours] local_attrs = self.build_attrs(id=self.hour_field % id_) select_html = Select(choices=hour_choices).render(self.hour_field % name, hour_val, local_attrs) output.append(select_html) minute_choices = [("%.2d"%i, "%.2d"%i) for i in self.minutes] local_attrs['id'] = self.minute_field % id_ select_html = Select(choices=minute_choices).render(self.minute_field % name, minute_val, local_attrs) output.append(select_html) second_choices = [("%.2d"%i, "%.2d"%i) for i in self.seconds] local_attrs['id'] = self.second_field % id_ select_html = Select(choices=second_choices).render(self.second_field % name, second_val, local_attrs) output.append(select_html) if self.twelve_hr: # If we were given an initial value, make sure the correct meridiem gets selected. if self.meridiem_val is not None and self.meridiem_val.startswith('p'): meridiem_choices = [('p.m.','p.m.'), ('a.m.','a.m.')] else: meridiem_choices = [('a.m.','a.m.'), ('p.m.','p.m.')] local_attrs['id'] = local_attrs['id'] = self.meridiem_field % id_ select_html = Select(choices=meridiem_choices).render(self.meridiem_field % name, self.meridiem_val, local_attrs) output.append(select_html) return mark_safe(u'\n'.join(output))
[docs] def id_for_label(self, id_): return '%s_hour' % id_
id_for_label = classmethod(id_for_label)
[docs] def value_from_datadict(self, data, files, name): # if there's not h:m:s data, assume zero: h = data.get(self.hour_field % name, 0) # hour m = data.get(self.minute_field % name, 0) # minute s = data.get(self.second_field % name, 0) # second meridiem = data.get(self.meridiem_field % name, None) #NOTE: if meridiem is None, assume 24-hr if meridiem is not None: if meridiem.lower().startswith('p') and int(h) != 12: h = (int(h)+12)%24 elif meridiem.lower().startswith('a') and int(h) == 12: h = 0 if (int(h) == 0 or h) and m and s: return '%s:%s:%s' % (h, m, s) return data.get(name, None)
class HorizRadioRenderer(forms.RadioSelect.renderer): """ this overrides widget method to put radio buttons horizontally instead of vertically. """ def render(self): """Outputs radios""" return mark_safe(u'\n'.join([u'%s\n' % w for w in self])) class JqSplitDateTimeWidget(MultiWidget): def __init__(self, attrs=None, date_format=None, time_format=None): date_class = attrs['date_class'] time_class = attrs['time_class'] del attrs['date_class'] del attrs['time_class'] time_attrs = attrs.copy() time_attrs['class'] = time_class date_attrs = attrs.copy() date_attrs['class'] = date_class widgets = (DateInput(attrs=date_attrs, format=date_format), TextInput(attrs=time_attrs), TextInput(attrs=time_attrs), Select(attrs=attrs, choices=[('AM','AM'),('PM','PM')])) super(JqSplitDateTimeWidget, self).__init__(widgets, attrs) def decompress(self, value): if value: d = strftime("%Y-%m-%d", value.timetuple()) hour = strftime("%I", value.timetuple()) minute = strftime("%M", value.timetuple()) meridian = strftime("%p", value.timetuple()) return (d, hour, minute, meridian) else: return (None, None, None, None) def format_output(self, rendered_widgets): """ Given a list of rendered widgets (as strings), it inserts an HTML linebreak between them. Returns a Unicode string representing the HTML for the whole lot. """ return "Date: %s<br/>Time: %s:%s %s" % (rendered_widgets[0], rendered_widgets[1], rendered_widgets[2], rendered_widgets[3]) class Media: css = { } js = ( "js/jqsplitdatetime.js", )