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120 | #!/usr/bin/env python
#
# Copyright 2008 Takashi Matsuo
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
try:
from django import newforms as forms
from django.newforms.util import flatatt, StrAndUnicode, smart_unicode
except ImportError:
from django.forms.util import flatatt, StrAndUnicode, smart_unicode
from django import forms
try:
from django.utils.translation import ugettext_lazy as _
except ImportError:
pass
from google.appengine.ext import db
from google.appengine.ext.db.djangoforms import monkey_patch
class GeoPtInput(forms.TextInput):
width = 300
height = 300
zoomlevel = 14
lat = -25.34808
lng = -49.237976
def render(self, name, value, attrs=None):
if value is None: value = ''
final_attrs = self.build_attrs(attrs, type=self.input_type, name=name)
if value != '':
# Only add the 'value' attribute if a value is non-empty.
try:
final_attrs['value'] = smart_unicode(value)
isset = "true"
(lat, lng) = [float(val) for val in final_attrs['value'].split(',')]
except ValueError:
pass
else:
(lat, lng, isset) = (self.lat, self.lng, "false")
input_field = u"""<input%(inputs)s />
<input type='button' onClick='javascript:gmap_open_%(id)s();'
value='%(open)s'/>
<input type='button' onClick='javascript:gmap_close_%(id)s();'
value='%(close)s'/>
""" % {'inputs': flatatt(final_attrs),
"id": final_attrs['id'],
"open": "Open Map",
"close": "Close Map",
}
javascripts = u"""
<script type="text/javascript">
//<![CDATA[
function gmap_close_%(id)s() {
var elm = document.getElementById('div_%(id)s');
if (elm) {
document.body.removeChild(elm);
}
}
function gmap_open_%(id)s() {
if (! document.getElementById('div_%(id)s')) {
var map_div = document.createElement('DIV');
map_div.id = 'div_%(id)s';
map_div.style.width= '%(width)dpx'
map_div.style.height= '%(height)dpx'
document.body.appendChild(map_div);
}
if (GBrowserIsCompatible()) {
var map = new GMap2(document.getElementById('div_%(id)s'));
map.setCenter(new GLatLng(%(lat)f,%(lng)f), %(zoomlevel)d);
GEvent.addListener(map, 'click', function(overlay, point) {
var form_value = point.toUrlValue();
document.getElementById('%(id)s').value=form_value;
var latLngStr = 'lat, lng = ' + form_value;
map.openInfoWindow(point, latLngStr);
});
map.addControl(new GSmallMapControl());
map.addControl(new GMapTypeControl());
var lsc = new google.maps.LocalSearch();
map.addControl(new google.maps.LocalSearch());
map.enableScrollWheelZoom();
if (%(isset)s) {
var point = new GLatLng(%(lat)f,%(lng)f);
var latLngStr = 'lat, lng = ' + point.toUrlValue();
map.openInfoWindow(point, latLngStr);
}
}
}
</script>
""" % {'id': final_attrs['id'],
'width': self.width,
'height': self.height,
'zoomlevel': self.zoomlevel,
'lat': self.lat,
'lng': self.lng,
'isset': isset,
}
return input_field + javascripts
class GeoPtField(forms.Field):
widget = GeoPtInput
class GeoPtProperty(db.GeoPtProperty):
__metaclass__ = monkey_patch
def get_form_field(self, **kwargs):
defaults = {'form_class': GeoPtField}
defaults.update(kwargs)
return super(GeoPtProperty, self).get_form_field(**defaults)
|