Allow LoadEditor through external resource

src/App.tsx

@@ -40,6 +40,22 @@ export class App extends React.Component<IAppProps> {
     };
   }
 
+  componentDidMount() {
+    const queryString = window.location.search;
+    const urlParams = new URLSearchParams(queryString);
+    const state = urlParams.get('state');
+
+    if (state === null) {
+      return;
+    }
+
+    fetch(state)
+      .then((response) => response.json())
+      .then((data: IEditorState) => {
+        this.LoadState(data);
+      });
+  }
+
   public NewEditor() {
     // Fetch the configuration from the API
     fetchConfiguration().then((configuration: Configuration) => {
@@ -86,18 +102,22 @@ export class App extends React.Component<IAppProps> {
       const result = reader.result as string;
       const editorState: IEditorState = JSON.parse(result);
 
-      Revive(editorState);
+      this.LoadState(editorState);
-
-      this.setState({
-        configuration: editorState.configuration,
-        history: editorState.history,
-        historyCurrentStep: editorState.historyCurrentStep,
-        isLoaded: true
-      } as IAppState);
     });
     reader.readAsText(file);
   }
 
+  private LoadState(editorState: IEditorState) {
+    Revive(editorState);
+
+    this.setState({
+      configuration: editorState.configuration,
+      history: editorState.history,
+      historyCurrentStep: editorState.historyCurrentStep,
+      isLoaded: true
+    } as IAppState);
+  }
+
   public render() {
     if (this.state.isLoaded) {
       return (