Add a configuration option to restric the map to a revelant box - #71

git-svn-id: http://www.peacefrogs.net/svn/chimere/trunk@52 9215b0d5-fb2c-4bbd-8d3e-bd2e9090e864

5 files changed, 22 insertions, 7 deletions

diff --git a/main/widgets.py b/main/widgets.py
index 77d7c72..6b5e544 100644
--- a/main/widgets.py
+++ b/main/widgets.py
@@ -46,6 +46,12 @@ def getMapJS():
                                                          settings.DEFAULT_CENTER
     js += u"var media_path = '%s';\n" % settings.MEDIA_URL
     js += u"var map_layer = %s;\n" % settings.MAP_LAYER
+    js += u"var restricted_extent;\n"
+    if settings.RESTRICTED_EXTENT:
+        restricted_extent_str = [str(coord) \
+                                 for coord in settings.RESTRICTED_EXTENT]
+        js += u"restricted_extent = new OpenLayers.Bounds(%s);\n" %\
+                                           ", ".join(restricted_extent_str)
     js = u"""<script type="text/javascript"><!--
 %s// !--></script>
 """ % js
diff --git a/settings.py b/settings.py
index 96589f0..a20037e 100644
--- a/settings.py
+++ b/settings.py
@@ -13,6 +13,8 @@ TINYMCE_URL = SERVER_URL + 'tinymce/'
 DEFAULT_CENTER = (-1.679444, 48.114722)
 EPSG_PROJECTION = 900913
 EPSG_DISPLAY_PROJECTION = 4326
+# if you want to restrict the map to a defined bounding box set it here
+RESTRICTED_EXTENT = None
 
 # default id category to check on the map
 DEFAULT_CATEGORIES = [1]
diff --git a/static/edit_map.js b/static/edit_map.js
index d9b9f12..8f37f6b 100644
--- a/static/edit_map.js
+++ b/static/edit_map.js
@@ -59,7 +59,7 @@ var putMarker = function (lonlat, zoom){
 
 /* main initialisation function */
 function init(){
-    map = new OpenLayers.Map ('map_edit', {
+    var options = {
         controls:[new OpenLayers.Control.Navigation(),
                     new OpenLayers.Control.PanPanel(),
                     new OpenLayers.Control.ZoomPanel(),
@@ -68,7 +68,9 @@ function init(){
         units: 'm',
         projection: epsg_projection,
         displayProjection: epsg_display_projection
-    } );
+    };
+    if (restricted_extent){options['restrictedExtent'] = restricted_extent;}
+    map = new OpenLayers.Map ('map_edit', options);
     layerMarkers.setOpacity(0.5);
     map.addLayers([map_layer, layerMarkers]);
     map.events.register('click', map, setMarker);
diff --git a/static/edit_route_map.js b/static/edit_route_map.js
index 491f811..dcf7c84 100644
--- a/static/edit_route_map.js
+++ b/static/edit_route_map.js
@@ -82,7 +82,7 @@ var pathModify = new OpenLayers.Control.ModifyFeature(vectors,
 
 /* main initialisation function */
 function init(){
-    map = new OpenLayers.Map('map_edit', {
+    var options = {
         controls:[new OpenLayers.Control.Navigation(),
                   new OpenLayers.Control.PanPanel(),
                   new OpenLayers.Control.ZoomPanel(),
@@ -93,7 +93,10 @@ function init(){
         units: 'm',
         projection: epsg_projection,
         displayProjection: epsg_display_projection,
-    } );
+    };
+    if (restricted_extent){options['restrictedExtent'] = restricted_extent;}
+    map = new OpenLayers.Map('map_edit', options);
+
     vectors.setOpacity(0.5);
     map.addLayers([map_layer, vectors]);
     /* zoom to the appropriate extent */
diff --git a/static/main_map.js b/static/main_map.js
index 7cc80a6..1849713 100644
--- a/static/main_map.js
+++ b/static/main_map.js
@@ -357,7 +357,7 @@ function createParams(center, zoom, layers) {
 /* main initialisation function */
 function init(){
     /* set the main map */
-    map = new OpenLayers.Map('map', {
+    var options = {
         controls:[new OpenLayers.Control.Navigation(),
                   new OpenLayers.Control.PanPanel(),
                   new OpenLayers.Control.ZoomPanel(),
@@ -365,8 +365,10 @@ function init(){
         maxResolution: 156543.0399,
         units: 'm',
         projection: new OpenLayers.Projection('EPSG:4326'),
-        theme:null
-    });
+        theme:null,
+    };
+    if (restricted_extent){options['restrictedExtent'] = restricted_extent;}
+    map = new OpenLayers.Map('map', options);
     permalink = new OpenLayers.Control.Permalink("permalink");
     permalink.createParams = createParams;
     map.addControl(permalink);