add edit button and barrio painting

sketch/html/main_with_sidebar.html

@@ -41,8 +41,8 @@
                     Treehouse (form)
                     <span class="leaflet-sidebar-close"><i class="fa fa-caret-left"></i></span>
                 </h1>
-
+                <p>Here you'll see a form to enter a new treehouse or the data about existing ones, depending on mode</p>
-			<p>Here you'll see a form to enter a new treehouse or the data about existing ones, depending on mode</p>
+                <iframe src="treehouse_form.html"></iframe>
             </div><!--sidebar-pane tree_form-->
             <div class="leaflet-sidebar-pane" id="barrio">
                 <h1 class="leaflet-sidebar-header">
@@ -69,9 +69,62 @@
 <!--integrity="sha256-20nQCchB9co0qIjJZRGuk2/Z9VM+kNiyxNV1lvTlZBo="-->
 </script>
 <script src="leaflet/leaflet-sidebar-v2/js/leaflet-sidebar.js"></script>
+<script src="leaflet/Leaflet.SelectAreaFeature/src/Leaflet.SelectAreaFeature.js"></script>
 <script>
+const max_barrio_zoom = 16;
+L.Control.EditButton =  L.Control.extend({
+
+      onAdd: function (map) {
+        var editButton = L.DomUtil.create('button', 'w3-button w3-white w3-hover-light-blue w3-small leaflet-bar');
+
+        //var editButton = L.DomUtil.create('button', 'leaflet-bar leaflet-control leaflet-control-custom');
+
+       // editButton.style.backgroundColor = 'white';
+       // editButton.style.backgroundSize = "30px 30px";
+       let active = false;
+       let title_inactive_treehouse = 'Add a treehouse in the current map area';
+       let title_inactive_barrio = 'Add a barrio in the current map area';
+       let title_active = 'Disable edit mode to drag the map';
+       title_inactive = function(){
+            let zoom = map.getZoom();
+            if (zoom <= max_barrio_zoom) return title_inactive_barrio;
+          //  if (layer == 'treehouse')  // uncomment if you ever introduce another layer or default value
+                return title_inactive_treehouse;
+       };
+
+       editButton.innerHTML = 'edit';
+       editButton.title = title_inactive();
+
+        editButton.onclick = function(){
+            if (active) {
+                editButton.className = editButton.className.replace("w3-blue", "w3-white");
+                editButton.title = title_inactive();
+                map.selectAreaFeature.disable();
+                active = false;
+            } else {
+                editButton.className = editButton.className.replace("w3-white", "w3-blue");
+                editButton.title = title_active;
+                map.selectAreaFeature.enable();
+                active = true;
+            }
+        }
+
+        return editButton;
+      },
+
+    onRemove: function(map) {
+        // Nothing to do here
+    }
+});
+
+L.control.editButton = function(opts) {
+    return new L.Control.EditButton(opts);
+}
+
 var map = L.map('map').setView([50.880301, 6.560531], 13,);
 L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', { minZoom: 12, maxZoom: 19, attribution: 'Map data: &copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap contributors</a>' }).addTo(map);
+let editButton = L.control.editButton({position: 'topright'});
+      map.addControl(editButton,);
 
 var barrio_markers = L.layerGroup(); //overlay where all barrio markers will be added
 var tree_markers = L.layerGroup();   //overlay where all tree(house) markers will be added
@@ -81,11 +134,12 @@ map.addLayer(tree_markers);
 
 function onMapClick(e){}      //for adding a tree(house)
 function onMapZoom(e){       //for deciding wether to show barrios or treehouses
-		if (map.getZoom() > 16) {
+		if (map.getZoom() > max_barrio_zoom) {
 				map.addLayer(barrio_markers);
 				map.removeLayer(tree_markers);
+
 			}
-		if (map.getZoom() <= 16) {
+		if (map.getZoom() <= max_barrio_zoom) {
 				map.addLayer(tree_markers);
 				map.removeLayer(barrio_markers);
 			}