--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/app/django/contrib/gis/maps/google/gmap.py Tue Oct 14 16:00:59 2008 +0000
@@ -0,0 +1,138 @@
+from django.conf import settings
+from django.contrib.gis import geos
+from django.template.loader import render_to_string
+from django.utils.safestring import mark_safe
+
+class GoogleMapException(Exception): pass
+from django.contrib.gis.maps.google.overlays import GPolygon, GPolyline, GMarker
+
+# The default Google Maps URL (for the API javascript)
+# TODO: Internationalize for Japan, UK, etc.
+GOOGLE_MAPS_URL='http://maps.google.com/maps?file=api&v=%s&key='
+
+class GoogleMap(object):
+ "A class for generating Google Maps JavaScript."
+
+ # String constants
+ onunload = mark_safe('onunload="GUnload()"') # Cleans up after Google Maps
+ vml_css = mark_safe('v\:* {behavior:url(#default#VML);}') # CSS for IE VML
+ xmlns = mark_safe('xmlns:v="urn:schemas-microsoft-com:vml"') # XML Namespace (for IE VML).
+
+ def __init__(self, key=None, api_url=None, version=None,
+ center=None, zoom=None, dom_id='map', load_func='gmap_load',
+ kml_urls=[], polygons=[], polylines=[], markers=[],
+ template='gis/google/js/google-map.js',
+ extra_context={}):
+
+ # The Google Maps API Key defined in the settings will be used
+ # if not passed in as a parameter. The use of an API key is
+ # _required_.
+ if not key:
+ try:
+ self.key = settings.GOOGLE_MAPS_API_KEY
+ except AttributeError:
+ raise GoogleMapException('Google Maps API Key not found (try adding GOOGLE_MAPS_API_KEY to your settings).')
+ else:
+ self.key = key
+
+ # Getting the Google Maps API version, defaults to using the latest ("2.x"),
+ # this is not necessarily the most stable.
+ if not version:
+ self.version = getattr(settings, 'GOOGLE_MAPS_API_VERSION', '2.x')
+ else:
+ self.version = version
+
+ # Can specify the API URL in the `api_url` keyword.
+ if not api_url:
+ self.api_url = mark_safe(getattr(settings, 'GOOGLE_MAPS_URL', GOOGLE_MAPS_URL) % self.version)
+ else:
+ self.api_url = api_url
+
+ # Setting the DOM id of the map, the load function, the JavaScript
+ # template, and the KML URLs array.
+ self.dom_id = dom_id
+ self.load_func = load_func
+ self.template = template
+ self.kml_urls = kml_urls
+
+ # Does the user want any GMarker, GPolygon, and/or GPolyline overlays?
+ self.polygons, self.polylines, self.markers = [], [], []
+ if markers:
+ for point in markers:
+ if isinstance(point, GMarker):
+ self.markers.append(point)
+ else:
+ self.markers.append(GMarker(point))
+ if polygons:
+ for poly in polygons:
+ if isinstance(poly, GPolygon):
+ self.polygons.append(poly)
+ else:
+ self.polygons.append(GPolygon(poly))
+ if polylines:
+ for pline in polylines:
+ if isinstance(pline, GPolyline):
+ self.polylines.append(pline)
+ else:
+ self.polylines.append(GPolyline(pline))
+
+ # If GMarker, GPolygons, and/or GPolylines
+ # are used the zoom will be automatically
+ # calculated via the Google Maps API. If both a zoom level and a
+ # center coordinate are provided with polygons/polylines, no automatic
+ # determination will occur.
+ self.calc_zoom = False
+ if self.polygons or self.polylines or self.markers:
+ if center is None or zoom is None:
+ self.calc_zoom = True
+
+ # Defaults for the zoom level and center coordinates if the zoom
+ # is not automatically calculated.
+ if zoom is None: zoom = 4
+ self.zoom = zoom
+ if center is None: center = (0, 0)
+ self.center = center
+
+ # Setting the parameters for the javascript template.
+ params = {'calc_zoom' : self.calc_zoom,
+ 'center' : self.center,
+ 'dom_id' : self.dom_id,
+ 'kml_urls' : self.kml_urls,
+ 'load_func' : self.load_func,
+ 'zoom' : self.zoom,
+ 'polygons' : self.polygons,
+ 'polylines' : self.polylines,
+ 'markers' : self.markers,
+ }
+ params.update(extra_context)
+ self.js = render_to_string(self.template, params)
+
+ @property
+ def body(self):
+ "Returns HTML body tag for loading and unloading Google Maps javascript."
+ return mark_safe('<body %s %s>' % (self.onload, self.onunload))
+
+ @property
+ def onload(self):
+ "Returns the `onload` HTML <body> attribute."
+ return mark_safe('onload="%s()"' % self.load_func)
+
+ @property
+ def api_script(self):
+ "Returns the <script> tag for the Google Maps API javascript."
+ return mark_safe('<script src="%s%s" type="text/javascript"></script>' % (self.api_url, self.key))
+
+ @property
+ def scripts(self):
+ "Returns all <script></script> tags required for Google Maps JavaScript."
+ return mark_safe('%s\n <script type="text/javascript">\n//<![CDATA[\n%s//]]>\n </script>' % (self.api_script, self.js))
+
+ @property
+ def style(self):
+ "Returns additional CSS styling needed for Google Maps on IE."
+ return mark_safe('<style type="text/css">%s</style>' % self.vml_css)
+
+ @property
+ def xhtml(self):
+ "Returns XHTML information needed for IE VML overlays."
+ return mark_safe('<html xmlns="http://www.w3.org/1999/xhtml" %s>' % self.xmlns)