--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcalendar/forms.py	Sat May 05 17:10:48 2012 -0500
@@ -0,0 +1,157 @@
+"""
+Forms for the gcalendar application.
+"""
+import datetime
+import pytz
+from django import forms
+from django.conf import settings
+
+from gcalendar.models import Event
+
+
+TIME_CHOICES = (
+    ('00:00', '12:00 am (00:00)'),
+    ('00:30', '12:30 am (00:30)'),
+    ('01:00', '1:00 am (01:00)'),
+    ('01:30', '1:30 am (01:30)'),
+    ('02:00', '2:00 am (02:00)'),
+    ('02:30', '2:30 am (02:30)'),
+    ('03:00', '3:00 am (03:00)'),
+    ('03:30', '3:30 am (03:30)'),
+    ('04:00', '4:00 am (04:00)'),
+    ('04:30', '4:30 am (04:30)'),
+    ('05:00', '5:00 am (05:00)'),
+    ('05:30', '5:30 am (05:30)'),
+    ('06:00', '6:00 am (06:00)'),
+    ('06:30', '6:30 am (06:30)'),
+    ('07:00', '7:00 am (07:00)'),
+    ('07:30', '7:30 am (07:30)'),
+    ('08:00', '8:00 am (08:00)'),
+    ('08:30', '8:30 am (08:30)'),
+    ('09:00', '9:00 am (09:00)'),
+    ('09:30', '9:30 am (09:30)'),
+    ('10:00', '10:00 am (10:00)'),
+    ('10:30', '10:30 am (10:30)'),
+    ('11:00', '11:00 am (11:00)'),
+    ('11:30', '11:30 am (11:30)'),
+    ('12:00', '12:00 am (12:00)'),
+    ('12:30', '12:30 am (12:30)'),
+    ('13:00', '1:00 pm (13:00)'),
+    ('13:30', '1:30 pm (13:30)'),
+    ('14:00', '2:00 pm (14:00)'),
+    ('14:30', '2:30 pm (14:30)'),
+    ('15:00', '3:00 pm (15:00)'),
+    ('15:30', '3:30 pm (15:30)'),
+    ('16:00', '4:00 pm (16:00)'),
+    ('16:30', '4:30 pm (16:30)'),
+    ('17:00', '5:00 pm (17:00)'),
+    ('17:30', '5:30 pm (17:30)'),
+    ('18:00', '6:00 pm (18:00)'),
+    ('18:30', '6:30 pm (18:30)'),
+    ('19:00', '7:00 pm (19:00)'),
+    ('19:30', '7:30 pm (19:30)'),
+    ('20:00', '8:00 pm (20:00)'),
+    ('20:30', '8:30 pm (20:30)'),
+    ('21:00', '9:00 pm (21:00)'),
+    ('21:30', '9:30 pm (21:30)'),
+    ('22:00', '10:00 pm (22:00)'),
+    ('22:30', '10:30 pm (22:30)'),
+    ('23:00', '11:00 pm (23:00)'),
+    ('23:30', '11:30 pm (23:30)'),
+)
+
+
+class EventEntryForm(forms.ModelForm):
+    what = forms.CharField(widget=forms.TextInput(attrs={'size': 60}))
+    start_date = forms.DateField(widget=forms.TextInput(attrs={'size': 10}))
+    start_time = forms.TimeField(required=False, widget=forms.Select(choices=TIME_CHOICES))
+    end_date = forms.DateField(widget=forms.TextInput(attrs={'size': 10}))
+    end_time = forms.TimeField(required=False, widget=forms.Select(choices=TIME_CHOICES))
+    time_zone = forms.CharField(required=False, widget=forms.HiddenInput())
+    where = forms.CharField(required=False, widget=forms.TextInput(attrs={'size': 60}))
+    description = forms.CharField(required=False,
+            widget=forms.Textarea(attrs={'class': 'markItUp smileyTarget'}))
+
+    DATE_FORMAT = '%m/%d/%Y'    # must match the jQuery UI datepicker config
+    TIME_FORMAT = '%H:%M'
+    DEFAULT_START_TIME = '19:00'
+    DEFAULT_END_TIME = '20:00'
+
+    class Meta:
+        model = Event
+        fields = ('what', 'start_date', 'start_time', 'end_date', 'end_time',
+            'all_day', 'time_zone', 'where', 'description', 'create_forum_thread')
+
+    class Media:
+        css = {
+            'all': (settings.GPP_THIRD_PARTY_CSS['markitup'] +
+                    settings.GPP_THIRD_PARTY_CSS['jquery-ui'] +
+                    ['css/gcalendar.css'])
+        }
+        js = (settings.GPP_THIRD_PARTY_JS['markitup'] +
+              settings.GPP_THIRD_PARTY_JS['jquery-ui'] +
+              ['js/timezone.js', 'js/gcalendar.js'])
+
+    def __init__(self, *args, **kwargs):
+        initial = kwargs.get('initial', {})
+        instance = kwargs.get('instance', None)
+
+        if len(args) == 0:      # no POST arguments
+            if instance is None:
+                init_day = datetime.date.today().strftime(self.DATE_FORMAT)
+                if 'start_date' not in initial:
+                    initial['start_date'] = init_day
+                if 'end_date' not in initial:
+                    initial['end_date'] = init_day
+                if 'start_time' not in initial:
+                    initial['start_time'] = self.DEFAULT_START_TIME
+                if 'end_time' not in initial:
+                    initial['end_time'] = self.DEFAULT_END_TIME
+            else:
+                initial['start_date'] = instance.start_date.strftime(self.DATE_FORMAT)
+                initial['end_date'] = instance.end_date.strftime(self.DATE_FORMAT)
+                if instance.all_day:
+                    initial['start_time'] = self.DEFAULT_START_TIME
+                    initial['end_time'] = self.DEFAULT_END_TIME
+                else:
+                    if 'start_time' not in initial:
+                        initial['start_time'] = instance.start_time.strftime(self.TIME_FORMAT)
+                    if 'end_time' not in initial:
+                        initial['end_time'] = instance.end_time.strftime(self.TIME_FORMAT)
+
+            kwargs['initial'] = initial
+
+        super(EventEntryForm, self).__init__(*args, **kwargs)
+
+        # We don't want the user to create a forum thread on an existing event
+        if instance is not None:
+            del self.fields['create_forum_thread']
+
+    def clean(self):
+        start_date = self.cleaned_data.get('start_date')
+        start_time = self.cleaned_data.get('start_time')
+        all_day = self.cleaned_data.get('all_day')
+        end_date = self.cleaned_data.get('end_date')
+        end_time = self.cleaned_data.get('end_time')
+
+        if start_date and start_time and (all_day or (end_date and end_time)):
+            if all_day:
+                start = start_date
+                end = end_date
+            else:
+                start = datetime.datetime.combine(start_date, start_time)
+                end = datetime.datetime.combine(end_date, end_time)
+            if start > end:
+                raise forms.ValidationError("The start date of the event "
+                        "is after the ending time!")
+
+        return self.cleaned_data
+
+    def clean_time_zone(self):
+        tz = self.cleaned_data['time_zone']
+        try:
+            pytz.timezone(tz)
+        except pytz.UnknownTimeZoneError:
+            raise forms.ValidationError("Invalid timezone.")
+        return tz
+