angular2消息弹窗组件

使用方式：

1.添加MsgDialog和MsgDialogService的引用

2.在主页面定义一个msgdialog组件（整个应用程序中只需要定义一次）

<msg-dialog (msgDialogLoaded)="msgDialogLoaded($event)">

3.在component中定义弹窗的初始化函数

msgDialogLoaded(event): void {
    this.msgDialogService.initializeMsgDialog(event);
}

4.使用组件

let dialog = this.msgDialogService.showModal({
    title: "Warning",
    okText: "OK",
    cancelText: "Cancel",
    message: "Are you sure you want to delete it?",
    showCancelButton: showCancelButton
});
dialog.onOK.subscribe(() => {
    this.deleteUser();
});
dialog.onCancel.subscribe(() => {
    console.log('delete canceled.');
});