added slider and some ui fixes

codeeditor-app/elements/code-editor/code-editor.ts

@@ -11,12 +11,15 @@ export class CodeEditor extends BaseElement {
     public input: string = "";
     public language: string = "";
     public editor!: monaco.editor.IStandaloneCodeEditor;
+    public lastInputCache: any;
 
     onInit(): void {
 
         this.initWorkers();
-        this.input = this.setInitInput();
         this.language = this.tagName.substring(0, this.tagName.indexOf("-")).toLocaleLowerCase();
+        this.lastInputCache = localStorage.getItem(this.language + "LastInputCache");
+        this.input = this.setInitInput();
+        
         this.setInitSettings();
 
         const prefersDarkScheme = window.matchMedia("(prefers-color-scheme: dark)");
@@ -38,6 +41,8 @@ export class CodeEditor extends BaseElement {
         this.editor.onDidChangeModelContent((e) => {
             if (!isSessionPage()) {
                 this.input = this.editor.getValue();
+                this.lastInputCache = this.input;
+                localStorage.setItem(this.language + "LastInputCache", this.input);
                 debounce.ensureDebounce(() => {
                     sessionApi.setSessionData(this.language, this.input);
                     this.outputFrame.setContent(this.language, this.input);
@@ -54,13 +59,21 @@ export class CodeEditor extends BaseElement {
     setInput(input: any) {
         if (this.input !== input) {
             this.input = input;
+            this.lastInputCache = this.input;
+            localStorage.setItem(this.language + "LastInputCache", this.input);
             this.editor.setValue(input);
             this.outputFrame.setContent(this.language, this.input);
         }
     }
 
     setInitInput(): string {
-        return "";
+        if (!isSessionPage() && sessionApi.hasSession()) {
+            return this.lastInputCache;
+        }
+        else {
+            return "";
+        }
+
     }
 
     setInitSettings(): void {