Merge pull request #93 from makmentins/JI-5501-clear-previous-state-o…

…n-resettask

JI-5501 Always clear previousState in resetTask,

scripts/essay.js

@@ -418,28 +418,33 @@ H5P.Essay = function ($, Question) {
    * @see contract at {@link https://h5p.org/documentation/developers/contracts#guides-header-5}
    */
   Essay.prototype.resetTask = function (params) {
-    params = params || {};
-    this.setViewState('task');
-
-    this.setExplanation();
-    this.removeFeedback();
-    this.hideSolution();
-
-    this.hideButton('show-solution');
-    this.hideButton('try-again');
-
-    // QuestionSet can control check button despite not in Question Type contract
-    if (this.params.behaviour.enableCheckButton) {
-      this.showButton('check-answer');
-    }
+    // Always reset previousState
+    this.previousState = {};
+    this.isAnswered = false;
 
-    if (!params.skipClear) {
-      this.inputField.setText('');
+    // Reset DOM only if it has been loaded
+    if (this.isContentInitialized()) {
+      params = params || {};
+      this.setViewState('task');
+
+      this.setExplanation();
+      this.removeFeedback();
+      this.hideSolution();
+
+      this.hideButton('show-solution');
+      this.hideButton('try-again');
+
+      // QuestionSet can control check button despite not in Question Type contract
+      if (this.params.behaviour.enableCheckButton) {
+        this.showButton('check-answer');
+      }
+
+      if (!params.skipClear) {
+        this.inputField.setText('');
+      }
+      this.inputField.enable();
+      this.inputField.focus();
     }
-    this.inputField.enable();
-    this.inputField.focus();
-
-    this.isAnswered = false;
   };
 
   /**
@@ -1071,7 +1076,7 @@ H5P.Essay = function ($, Question) {
      * to show up that restart button without the need to.
      */
     if (!inputFieldText) {
-      return;
+      return {};
     }
 
     return {
@@ -1092,6 +1097,14 @@ H5P.Essay = function ($, Question) {
     this.viewState = state;
   };
 
+  /**
+   * Checks if the content has been initialized or loaded into the DOM.
+   * @returns {boolean} True if the content has been initialized, false otherwise.
+   */
+  Essay.prototype.isContentInitialized = function() {
+    return !!this.inputField; // Check if inputField exists
+  };
+
   /** @constant {string}
    * latin special chars: \u00C0-\u00D6\u00D8-\u00F6\u00F8-\u00FF
    * greek chars: \u0370-\u03FF