Feat : Add redraw method for TileLayer (#392)

* Feat : Add redraw method for TileLayer

* remove console.log

Author: kgiacobbi

ipyleaflet/leaflet.py

@@ -253,6 +253,8 @@ def _handle_leaflet_event(self, _, content, buffers):
     def on_load(self, callback, remove=False):
         self._load_callbacks.register_callback(callback, remove=remove)
 
+    def redraw(self): 
+        self.send({'msg':'redraw'})
 
 class LocalTileLayer(TileLayer):
     _view_name = Unicode('LeafletLocalTileLayerView').tag(sync=True)

js/src/layers/TileLayer.js

@@ -33,6 +33,7 @@ var LeafletTileLayerView = LeafletRasterLayerView.extend({
                 event: 'load'
             });
         });
+        this.model.on('msg:custom', _.bind(this.handle_message, this));
     },
 
     model_events: function () {
@@ -41,6 +42,12 @@ var LeafletTileLayerView = LeafletRasterLayerView.extend({
             this.obj.setUrl(this.model.get('url'));
         }, this);
     },
+
+    handle_message: function(content) {
+        if(content.msg == 'redraw'){
+            this.obj.redraw();
+        }
+    },
 });
 
 module.exports = {