[Editor] Provide an element to render in the annotation layer after a freetext has been edited (bug 1890535)

src/display/editor/tools.js

@@ -544,6 +544,8 @@ class AnnotationEditorUIManager {
 
   #annotationStorage = null;
 
+  #changedExistingAnnotations = null;
+
   #commandManager = new CommandManager();
 
   #currentPageIndex = 0;
@@ -1682,6 +1684,7 @@ class AnnotationEditorUIManager {
    */
   addDeletedAnnotationElement(editor) {
     this.#deletedAnnotationsElementIds.add(editor.annotationElementId);
+    this.addChangedExistingAnnotation(editor);
     editor.deleted = true;
   }
 
@@ -1700,6 +1703,7 @@ class AnnotationEditorUIManager {
    */
   removeDeletedAnnotationElement(editor) {
     this.#deletedAnnotationsElementIds.delete(editor.annotationElementId);
+    this.removeChangedExistingAnnotation(editor);
     editor.deleted = false;
   }
 
@@ -2243,6 +2247,32 @@ class AnnotationEditorUIManager {
     }
     return boxes.length === 0 ? null : boxes;
   }
+
+  addChangedExistingAnnotation({ annotationElementId, id }) {
+    (this.#changedExistingAnnotations ||= new Map()).set(
+      annotationElementId,
+      id
+    );
+  }
+
+  removeChangedExistingAnnotation({ annotationElementId }) {
+    this.#changedExistingAnnotations?.delete(annotationElementId);
+  }
+
+  renderAnnotationElement(annotation) {
+    const editorId = this.#changedExistingAnnotations?.get(annotation.data.id);
+    if (!editorId) {
+      return;
+    }
+    const editor = this.#annotationStorage.getRawValue(editorId);
+    if (!editor) {
+      return;
+    }
+    if (this.#mode === AnnotationEditorType.NONE && !editor.hasBeenModified) {
+      return;
+    }
+    editor.renderAnnotationElement(annotation);
+  }
 }
 
 export {