[Editor] No need to click twice to create an editor when the last one is empty

src/display/editor/annotation_editor_layer.js

@@ -572,7 +572,8 @@ class AnnotationEditorLayer {
       return;
     }
 
-    this.#allowClick = !this.#uiManager.hasActive();
+    const editor = this.#uiManager.getActive();
+    this.#allowClick = !editor || editor.isEmpty();
   }
 
   /**

src/display/editor/tools.js

@@ -938,7 +938,9 @@ class AnnotationEditorUIManager {
     for (const editor of this.#allEditors.values()) {
       editor.unselect();
     }
-    this.#dispatchUpdateStates({ hasSelectedEditor: this.hasActive() });
+    this.#dispatchUpdateStates({
+      hasSelectedEditor: this.#activeEditor !== null,
+    });
   }
 
   /**
@@ -958,14 +960,6 @@ class AnnotationEditorUIManager {
     return this.#activeEditor;
   }
 
-  /**
-   * Check if there is an active editor.
-   * @returns {boolean}
-   */
-  hasActive() {
-    return this.#activeEditor !== null;
-  }
-
   /**
    * Get the current editor mode.
    * @returns {number}