Added resetSubscriptions and updateRendering

Added two functions: resetSubscriptions and updateRendering. The widget
now refreshes on every refresh of your entity.

ShowByCondition/src/ShowByCondition/widget/ShowByCondition.js

@@ -3,10 +3,10 @@
     Default
     ========================
 
-    @file      : Default.js
-    @version   : 1
+    @file      : ShowByCondition.js
+    @version   : 1.2
     @author    : Remco
-    @date      : Fri, 22 Jan 2016 12:45:23 GMT
+    @date      : Mon, 13 Jun 2016
     @copyright :
     @license   :
 
@@ -21,7 +21,8 @@ define([
 	"dojo/NodeList-traverse",
     "mxui/widget/_WidgetBase",
 	"mxui/dom",
-], function(declare, NodeList, _WidgetBase, dom) {
+	"dojo/_base/lang",
+], function(declare, NodeList, _WidgetBase, dom, lang) {
     "use strict";
 
     // Declare widget's prototype.
@@ -41,6 +42,7 @@ define([
         // dijit._WidgetBase.postCreate is called after constructing the widget. Implement to do extra setup work.
         postCreate: function() {
             logger.debug(this.id + ".postCreate");
+			this.domNode.parentElement.style.display = "none";
         },
 
 		setParentDisplay : function(display) {
@@ -53,28 +55,51 @@ define([
         // mxui.widget._WidgetBase.update is called when context is changed or initialized. Implement to re-render and / or fetch data.
         update: function(obj, callback) {
 			logger.debug(this.id + ".update");
-			this.domNode.parentElement.style.display = "none";
-			this.contextGUID = obj.getGuid();
-
-			if (this.contextGUID) {
-				if (this.microflowName != '') {
-					mx.data.action({
-						params: {
-							applyto: "selection",
-							actionname: this.microflowName,
-							guids: [this.contextGUID]
-						},
-						callback: dojo.hitch(this, function (result) {
-							this.setParentDisplay(result);
-						}),
-						error: function(error) {
-							alert(error.description);
-						}
-					}, this);
-				}
-			}
+			this._contextObj = obj;
+			this._resetSubscriptions();
+			this._updateRendering();
             callback();
         },
+
+		// Rerender the interface.
+        _updateRendering: function () {
+			if (this.microflowName != '') {
+				mx.data.action({
+					params: {
+						applyto: "selection",
+						actionname: this.microflowName,
+						guids: [this._contextObj.getGuid()]
+					},
+					callback: dojo.hitch(this, function (result) {
+						this.setParentDisplay(result);
+					}),
+					error: function(error) {
+						alert(error.description);
+					}
+				}, this);
+			}
+        },
+        // Reset subscriptions.
+        _resetSubscriptions: function () {
+            var _objectHandle = null;
+            // Release handles on previous object, if any.
+            if (this._handles) {
+                this._handles.forEach(function (handle, i) {
+                    mx.data.unsubscribe(handle);
+                });
+                this._handles = [];
+            }
+            // When a mendix object exists create subscribtions. 
+            if (this._contextObj) {
+                _objectHandle = this.subscribe({
+                    guid: this._contextObj.getGuid(),
+                    callback: lang.hitch(this, function (guid) {
+                        this._updateRendering();
+                    })
+                });
+                this._handles = [_objectHandle];
+            }
+        },
 
         // mxui.widget._WidgetBase.uninitialize is called when the widget is destroyed. Implement to do special tear-down work.
         uninitialize: function() {