chore: allow context to be passed from new file menu

client/src/app/App.js

@@ -1804,7 +1804,7 @@ export class App extends PureComponent {
     }
 
     if (action === 'create-diagram') {
-      return this.createDiagram(options);
+      return this.createDiagram(options.type);
     }
 
     if (action === 'reopen-file') {
@@ -2190,15 +2190,11 @@ export class App extends PureComponent {
       items = [
         ...items,
         ...entries.map(entry => {
-
-          // This allows tab providers to pass options, e.g. for the diagram type
-          const actionArgs = typeof action === 'string' ? [ entry.action ] : entry.action;
-
           return {
             text: entry.label,
             group: entry.group,
             icon: provider.getIcon(),
-            onClick: () => this.triggerAction(...actionArgs)
+            onClick: () => this.triggerAction(entry.action, entry.options)
           };
         })
       ];

client/src/app/EmptyTab.js

@@ -34,26 +34,24 @@ export default class EmptyTab extends PureComponent {
 
   triggerAction() { }
 
-  renderDiagramButton = (action, title, icon) => {
+  renderDiagramButton = (action, title, icon, options) => {
 
     const {
       onAction
     } = this.props;
 
-    const actionArgs = typeof action === 'string' ? [ action ] : action;
-
     return (
-      <button className="btn btn-secondary" onClick={ () => onAction(...actionArgs) }>
+      <button className="btn btn-secondary" onClick={ () => onAction(action, options) }>
         {icon}
         {title}
       </button>
     );
   };
 
   AdditionalButton = (props) => {
-    const { action, title, icon } = props;
+    const { action, options, title, icon } = props;
 
-    return this.renderDiagramButton(action, title, icon);
+    return this.renderDiagramButton(action, title, icon, options);
   };
 
   renderCloudColumn = () => {