add loop property & fix bug caused by renderPage cache

doric-js/lib/src/widget/slider.d.ts

@@ -15,6 +15,7 @@ export interface ISlider extends IView {
     itemCount: number;
     batchCount?: number;
     onPageSlided?: (index: number) => void;
+    loop?: boolean;
 }
 export declare class Slider extends Superview implements ISlider {
     private cachedViews;
@@ -24,6 +25,7 @@ export declare class Slider extends Superview implements ISlider {
     renderPage: (index: number) => SlideItem;
     batchCount: number;
     onPageSlided?: (index: number) => void;
+    loop?: boolean;
     private getItem;
     isDirty(): boolean;
     private renderBunchedItems;

doric-js/lib/src/widget/slider.js

@@ -43,12 +43,9 @@ export class Slider extends Superview {
         return this.cachedViews.values();
     }
     getItem(itemIdx) {
-        let view = this.cachedViews.get(`${itemIdx}`);
-        if (view === undefined) {
-            view = this.renderPage(itemIdx);
-            view.superview = this;
-            this.cachedViews.set(`${itemIdx}`, view);
-        }
+        let view = this.renderPage(itemIdx);
+        view.superview = this;
+        this.cachedViews.set(`${itemIdx}`, view);
         return view;
     }
     isDirty() {
@@ -89,6 +86,10 @@ __decorate([
     Property,
     __metadata("design:type", Function)
 ], Slider.prototype, "onPageSlided", void 0);
+__decorate([
+    Property,
+    __metadata("design:type", Boolean)
+], Slider.prototype, "loop", void 0);
 export function slider(config) {
     const ret = new Slider;
     for (let key in config) {