Plugin Draw Resonators: Create callback function in render

plugins/draw-resonators.user.js

@@ -2,7 +2,7 @@
 // @id             iitc-plugin-draw-resonators@xelio
 // @name           IITC plugin: Draw resonators
 // @category       Layer
-// @version        0.2.0.@@DATETIMEVERSION@@
+// @version        0.2.1.@@DATETIMEVERSION@@
 // @namespace      https://github.com/jonatkins/ingress-intel-total-conversion
 // @updateURL      @@UPDATEURL@@
 // @downloadURL    @@DOWNLOADURL@@
@@ -56,6 +56,7 @@ window.plugin.drawResonators.Render = function(options) {
   this.deleteResonatorEntities = this.deleteResonatorEntities.bind(this);
   this.handleResonatorEntitiesBeforeZoom = this.handleResonatorEntitiesBeforeZoom.bind(this);
   this.handleResonatorEntitiesAfterZoom = this.handleResonatorEntitiesAfterZoom.bind(this);
+  this.handleEnableZoomLevelChange = this.handleEnableZoomLevelChange.bind(this);
   this.portalSelectionChange = this.portalSelectionChange.bind(this);
 };
 
@@ -161,12 +162,36 @@ window.plugin.drawResonators.Render.prototype.handleResonatorEntitiesBeforeZoom
 
 window.plugin.drawResonators.Render.prototype.handleResonatorEntitiesAfterZoom = function() {
   if(!this.isResonatorsShow()) {
+    this.clearAllResonators();
+    return;
+  }
+
+  // Draw all resonators if they were not drawn
+  if(!this.isResonatorsShowBeforeZoom()) {
+    this.drawAllResonators();
+  }
+}
+
+window.plugin.drawResonators.Render.prototype.handleEnableZoomLevelChange = function(zoomLevel) {
+  this.enableZoomLevel = zoomLevel;
+
+  if(!this.isResonatorsShow()) {
+    this.clearAllResonators();
+    return;
+  }
+
+  // Draw all resonators if they were not drawn
+  if(!Object.keys(this.resonators).length > 0) {
+    this.drawAllResonators();
+  }
+}
+
+window.plugin.drawResonators.Render.prototype.clearAllResonators = function() {
   this.resonatorLayerGroup.clearLayers();
   this.resonators = {};
-  } else {
+}
-    // Redraw all resonators if they were deleted
-    if(this.isResonatorsShowBeforeZoom()) return;
 
+window.plugin.drawResonators.Render.prototype.drawAllResonators = function() {
   var render = this;
 
   // loop through level of portals, only draw if the portal is shown on map
@@ -178,8 +203,6 @@ window.plugin.drawResonators.Render.prototype.handleResonatorEntitiesAfterZoom =
       render.createResonatorEntities(portal);
     }
   }
-
-  }
 }
 
 window.plugin.drawResonators.Render.prototype.portalSelectionChange = function(data) {
@@ -299,8 +322,6 @@ window.plugin.drawResonators.Styler.prototype.defaultConnectorStyle = function(r
 
 //////// Options for storing and loading options ////////
 
-// TODO: add callback to notify option changes
-
 window.plugin.drawResonators.Options = function() {
   this._options = {};
   this._callbacks = {};
@@ -328,7 +349,7 @@ window.plugin.drawResonators.Options.prototype.changeOption = function(name, val
   this._options[name] = value;
   this.storeLocal(name, this._options[name]);
 
-  if (!this._callbacks[name]) {
+  if (this._callbacks[name] !== null) {
     for(var i in this._callbacks[name]) {
       this._callbacks[name][i](value);
     }
@@ -372,6 +393,8 @@ var setup =  function() {
   window.plugin.drawResonators.render.registerHook();
   window.addLayerGroup('Resonators', window.plugin.drawResonators.render.resonatorLayerGroup, true);
 
+  window.plugin.drawResonators.options.addCallback('enableZoomLevel', window.plugin.drawResonators.render.handleEnableZoomLevelChange);
+
   // TODO: add options dialog to change options
 }