Angular4_Checkbox多选框选中事件,与其他组件交互

<input type="checkbox" [rtSelectionCheckboxFor]="hu" [(selected)]="hu.selected"  (change)="onChecked($event); setRtList(list);"/>

用的事change事件监听的

onChecked($event: any) {
this.changeStatus.emit(true);
}

然后触发事件，传到父组件。再进行其他操作
changeStatus(agreed: boolean) {
let isEdit = true;
let isReturn = true;
let isCombine = true;

const selectedRows = this.gridComponent.getSelectedRows();
if (selectedRows && selectedRows.length >= 1) {
isEdit = false; isReturn = false; isCombine = true;
if (selectedRows && selectedRows.length === 2) {
isEdit = true; isReturn = true;
isCombine = false;
} if (selectedRows && selectedRows.length > 2) {
isEdit = true; isReturn = false;
isCombine = true;
}
}
this.footerComponent.setHuButtonStatus(isEdit, isReturn, isCombine);
}