From b740b53b92d5276f48449c333ee90001abfb2a48 Mon Sep 17 00:00:00 2001
From: Étienne Loks <etienne.loks@peacefrogs.net>
Date: Thu, 31 Mar 2011 21:23:08 +0200
Subject: Create specific widget to manage surfaces (closes #60)

---
 ishtar/furnitures/forms.py   | 15 +++++++++-----
 ishtar/furnitures/widgets.py | 48 ++++++++++++++++++++++++++++++++++++++++++++
 ishtar/settings.py.example   |  2 ++
 3 files changed, 60 insertions(+), 5 deletions(-)

diff --git a/ishtar/furnitures/forms.py b/ishtar/furnitures/forms.py
index 30fcefa3d..4a7ef745f 100644
--- a/ishtar/furnitures/forms.py
+++ b/ishtar/furnitures/forms.py
@@ -923,7 +923,9 @@ class FileFormGeneralRO(FileFormGeneral):
 class FileFormAddress(forms.Form):
     form_label = _("Address")
     associated_models = {'town':models.Town}
-    total_surface = forms.IntegerField(label=_("Total surface"),
+    total_surface = forms.IntegerField(required=False,
+                           widget=widgets.AreaWidget,
+                           label=_(u"Total surface"),
                            validators=[validators.MinValueValidator(0),
                                        validators.MaxValueValidator(999999999)])
     address = forms.CharField(label=_(u"Main address"), widget=forms.Textarea)
@@ -1035,9 +1037,9 @@ class FileFormPreventive(forms.Form):
                                   choices=models.PermitType.get_types())
     permit_reference = forms.CharField(label=_(u"Permit reference"),
             required=False, validators=[validators.MaxLengthValidator(60)])
-    total_developed_surface = forms.IntegerField(
-                                             label=_("Total developed surface"),
-                           validators=[validators.MinValueValidator(0),
+    total_developed_surface = forms.IntegerField(widget=widgets.AreaWidget,
+           label=_(u"Total developed surface"),
+           required=False, validators=[validators.MinValueValidator(0),
                                        validators.MaxValueValidator(999999999)])
     if settings.COUNTRY == 'fr':
         saisine_type = forms.ChoiceField(label=_("Saisine type"),
@@ -1501,7 +1503,10 @@ class OperationFormGeneral(forms.Form):
                                        choices=models.OperationType.get_types())
     start_date = forms.DateField(label=_(u"Start date"), required=False,
                                  widget=widgets.JQueryDate)
-    surface = forms.IntegerField(label=_(u"Surface (m²)"), required=False,)
+    surface = forms.IntegerField(required=False, widget=widgets.AreaWidget,
+                           label=_(u"Total surface"),
+                           validators=[validators.MinValueValidator(0),
+                                       validators.MaxValueValidator(999999999)])
     year = forms.IntegerField(label=_("Year"),
                               initial=lambda:datetime.datetime.now().year,
                               validators=[validators.MinValueValidator(1900),
diff --git a/ishtar/furnitures/widgets.py b/ishtar/furnitures/widgets.py
index 4217d5194..1ef83dd6e 100644
--- a/ishtar/furnitures/widgets.py
+++ b/ishtar/furnitures/widgets.py
@@ -39,6 +39,54 @@ class DeleteWidget(forms.CheckboxInput):
         output.append('</td></tr>')
         return mark_safe('\n'.join(output))
 
+class SquareMeterWidget(forms.TextInput):
+    def render(self, name, value, attrs=None):
+        final_attrs = flatatt(self.build_attrs(attrs, name=name, value=value))
+        output = u'<input class="area_widget" type="text"%s> %s '\
+                 u'(<span id="ha_%s">0</span> ha)' % (final_attrs,
+                 settings.SURFACE_UNIT_LABEL, attrs['id'])
+        output += """
+<script type="text/javascript"><!--//
+    function evaluate_%(safe_id)s(){
+        value = parseFloat($("#%(id)s").val());
+        if(!isNaN(value)){
+            value = value/10000;
+        } else {
+            value = 0;
+        }
+        $("#ha_%(id)s").html(value);
+    }
+    $("#%(id)s").keyup(evaluate_%(safe_id)s);
+    $(document).ready(evaluate_%(safe_id)s());
+//--></script>
+""" % {"id":attrs['id'], "safe_id":attrs['id'].replace('-', '_')}
+        return mark_safe(output)
+
+AreaWidget = forms.TextInput
+if settings.SURFACE_UNIT == 'square-metre':
+    global AreaWidget
+    AreaWidget = SquareMeterWidget
+
+class JQueryDate(forms.TextInput):
+    def render(self, name, value=None, attrs=None):
+        rendered = super(JQueryDate, self).render(name, value, attrs)
+        rendered += """
+<script type="text/javascript"><!--//
+    $(function() {
+        $("#id_%(name)s").datepicker($.datepicker.regional["%(country)s"]);
+        var val = $("#id_%(name)s").val();
+        if(val){
+            var dtp = $.datepicker.parseDate('yy-mm-dd', val);
+            val = $.datepicker.formatDate(
+                    $.datepicker.regional["%(country)s"]['dateFormat'],
+                    dtp);
+            $("#id_%(name)s").val(val);
+        }
+    });
+//--></script>
+""" % {"name":name, "country":settings.COUNTRY}
+        return rendered
+
 class JQueryDate(forms.TextInput):
     def render(self, name, value=None, attrs=None):
         rendered = super(JQueryDate, self).render(name, value, attrs)
diff --git a/ishtar/settings.py.example b/ishtar/settings.py.example
index 4b3388389..192f13108 100644
--- a/ishtar/settings.py.example
+++ b/ishtar/settings.py.example
@@ -6,6 +6,8 @@
 # Ishtar custom
 SRID = 27572
 ENCODING = '' # specific encoding for CSV export - default to utf-8
+SURFACE_UNIT = 'square-metre'
+SURFACE_UNIT_LABEL = 'm²'
 
 ROOT_PATH = "/var/local/webapp/ishtar/ishtar/"
 URL_PATH = ""
-- 
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