fix(slide): update ISlide interface

Author: singerla

src/classes/slide.ts

@@ -227,7 +227,7 @@ export class Slide implements ISlide {
    * Use another slide layout.
    * @param targetLayoutId
    */
-  useSlideLayout(targetLayoutId?: number): void {
+  useSlideLayout(targetLayoutId?: number): this {
     this.relModifications.push(async (slideRelXml) => {
       if (!targetLayoutId) {
         const sourceLayoutId = await XmlRelationshipHelper.getSlideLayoutNumber(
@@ -260,6 +260,8 @@ export class Slide implements ISlide {
         slideLayouts[0].updateTargetIndex(targetLayoutId);
       }
     });
+
+    return this;
   }
 
   async autoImportSourceSlideMaster(

src/interfaces/islide.ts

@@ -1,13 +1,27 @@
 import { RootPresTemplate } from './root-pres-template';
-import { SlideModificationCallback, SourceIdentifier } from '../types/types';
+import {
+  FindElementSelector,
+  ShapeModificationCallback,
+  SlideModificationCallback,
+  SourceIdentifier,
+} from '../types/types';
 import IArchive from './iarchive';
 
 export interface ISlide {
   sourceArchive: IArchive;
   sourceNumber: SourceIdentifier;
-  modifications: SlideModificationCallback[];
   modify(callback: SlideModificationCallback): void;
   append(targetTemplate: RootPresTemplate): Promise<void>;
-  addElement(presName: string, slideNumber: number, selector: string): void;
-  useSlideLayout(index?: number): void;
+  addElement(
+    presName: string,
+    slideNumber: number,
+    selector: FindElementSelector,
+    callback?: ShapeModificationCallback | ShapeModificationCallback[],
+  ): ISlide;
+  modifyElement(
+    selector: FindElementSelector,
+    callback: ShapeModificationCallback | ShapeModificationCallback[],
+  ): ISlide;
+  removeElement(selector: FindElementSelector): ISlide;
+  useSlideLayout(index?: number): ISlide;
 }