Allow empty widget names

Fix resetting widget dialog error message

app/components/widget-label.js

@@ -19,6 +19,7 @@ export default WidgetAbstract.extend({
     if (this.get('editing') === true) {
       // prepare modal
       this.set('name', this.get('widget.name'));
+      this.set('errorMessage', null);
 
       // show modal
       this.set('isShowingModal', true);

app/components/widget-plot.js

@@ -188,11 +188,6 @@ export default WidgetAbstract.extend({
       // verify properties
       let properties = this.getProperties('name');
 
-      if (properties['name'] === null || properties['name'] === "") {
-        this.set('errorMessage', 'Widget name is missing');
-        return;
-      }
-
       // set simulator by simulation model name
       let simulationModelName = this.get('simulationModelName');
       let self = this;

app/components/widget-table.js

@@ -83,6 +83,7 @@ export default WidgetAbstract.extend({
     if (this.get('editing') === true) {
       // prepare modal
       this.set('name', this.get('widget.name'));
+      this.set('errorMessage', null);
 
       // get simlator name from id
       let self = this;
@@ -117,11 +118,6 @@ export default WidgetAbstract.extend({
       // verify properties
       let properties = this.getProperties('name');
 
-      if (properties['name'] === null || properties['name'] === "") {
-        this.set('errorMessage', 'Widget name is missing');
-        return;
-      }
-
       // set simulator by simulation model name
       let simulationModelName = this.get('simulationModelName');
       let self = this;

app/components/widget-value.js

@@ -44,6 +44,7 @@ export default WidgetAbstract.extend({
     if (this.get('editing') === true) {
       // prepare modal
       this.set('name', this.get('widget.name'));
+      this.set('errorMessage', null);
 
       // get signal mapping for simulation model
       let self = this;
@@ -82,11 +83,6 @@ export default WidgetAbstract.extend({
       // verify properties
       let properties = this.getProperties('name');
 
-      if (properties['name'] === null || properties['name'] === "") {
-        this.set('errorMessage', 'Widget name is missing');
-        return;
-      }
-
       // set simulator by simulation model name
       let simulationModelName = this.get('simulationModelName');
       let self = this;

app/templates/components/widget-plot.hbs

@@ -35,6 +35,12 @@
   {{#modal-dialog attachment="middle center" translucentOverlay=true}}
     <h1>Plot</h1>
 
+    {{#if errorMessage}}
+      <p>
+        <b>Error:</b> {{errorMessage}}
+      </p>
+    {{/if}}
+
     <form class="form-widget-plot" {{action 'submitModal' on='submit'}} >
       <table>
         <tr>
@@ -102,9 +108,5 @@
         </tr>
       </table>
     </form>
-
-    {{#if errorMessage}}
-      <p><b>Error:</b> {{errorMessage}}</p>
-    {{/if}}
   {{/modal-dialog}}
 {{/if}}

app/templates/components/widget-value.hbs

@@ -1,4 +1,4 @@
-{{name}}: {{value}}
+{{name}}{{#if name}}:{{/if}} {{value}}
 
 {{#if isShowingModal}}
   {{#modal-dialog attachment="middle center" translucentOverlay=true}}