Method showModalWait

packages/fairygui/src/widgets/Window.ts:328–344

* Show modal wait indicator * 显示模态等待指示器

(requestingCmd?: number)

     * 显示模态等待指示器
     */
    public showModalWait(requestingCmd?: number): void {
        if (requestingCmd !== undefined) {
            this._requestingCmd = requestingCmd;
        }

        const modalWaitingUrl = getUIConfig('windowModalWaiting');
        if (modalWaitingUrl) {
            if (!this._modalWaitPane) {
                this._modalWaitPane = UIPackage.createObjectFromURL(modalWaitingUrl);
            }

            if (this._modalWaitPane) {
                this.layoutModalWaitPane();
                this.addChild(this._modalWaitPane);
            }
        }
    }

    /**
     * Layout modal wait pane