implemented open_popup and close_popup methods

Author: PROgram52bc

ipyleaflet/leaflet.py

@@ -497,6 +497,11 @@ class Popup(UILayer):
     auto_close = Bool(True).tag(sync=True, o=True)
     close_on_escape_key = Bool(True).tag(sync=True, o=True)
 
+    def open_popup(self, location=def_loc):
+        self.send({'msg': 'open', 'location': location})
+
+    def close_popup(self):
+        self.send({'msg': 'close'})
 
 class RasterLayer(Layer):
     """Abstract RasterLayer class.

js/src/layers/Popup.js

@@ -34,6 +34,7 @@ export class LeafletPopupView extends layer.LeafletUILayerView {
     this.obj = L.popup(this.get_options()).setLatLng(
       this.model.get('location')
     );
+    this.model.on('msg:custom', this.handle_message.bind(this));
   }
 
   initialize(parameters) {
@@ -94,7 +95,7 @@ export class LeafletPopupView extends layer.LeafletUILayerView {
       this.set_child(this.model.get('child'));
     });
     this.model.on_some_change(
-      ['min_width', 'max_width', 'max_height'],
+      ['min_width', 'max_width', 'max_height', 'location'],
       this.update_popup,
       this
     );
@@ -115,4 +116,11 @@ export class LeafletPopupView extends layer.LeafletUILayerView {
       this.map_view.obj.closePopup(this.obj);
     }
   }
+  handle_message(content) {
+    if (content.msg == 'open') {
+      this.map_view.obj.openPopup(this.obj, content.location);
+    } else if (content.msg == 'close') {
+      this.map_view.obj.closePopup(this.obj);
+    }
+  }
 }