feat:add checkbox control menu

src/editor/core/draw/control/Control.ts

@@ -274,6 +274,7 @@ export class Control {
     const elementList = this.getElementList()
     const startElement = elementList[startIndex]
     const control = startElement.control!
+    if (!control.placeholder) return
     const placeholderStrList = control.placeholder.split('')
     for (let p = 0; p < placeholderStrList.length; p++) {
       const value = placeholderStrList[p]

src/editor/interface/Control.ts

@@ -23,7 +23,7 @@ export interface IControlCheckbox {
 export interface IControlBasic {
   type: ControlType;
   value: IElement[] | null;
-  placeholder: string;
+  placeholder?: string;
   conceptId?: string;
   prefix?: string;
   postfix?: string;

src/editor/utils/element.ts

@@ -162,7 +162,7 @@ export function formatElementList(elementList: IElement[], options: IFormatEleme
             }
           }
         }
-      } else {
+      } else if (placeholder) {
         // placeholder
         const thePlaceholderArgs: Pick<IElement, 'color'> = {}
         if (editorOptions && editorOptions.control) {