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import { Http } from '@/utils';
import { Subscription } from 'rxjs';
/**
* 按钮loadding状态服务
*
* @export
* @class LoaddingService
*/
export class LoaddingService {
/**
* 单例变量声明
*
* @private
* @static
* @type {LoaddingService}
* @memberof LoaddingService
*/
private static loaddingService: LoaddingService;
/**
* loadding状态事件
*
* @public
* @type {(Subscription | undefined)}
* @memberof LoaddingService
*/
public loaddingStateEvent: Subscription | undefined;
/**
* 获取 LoaddingService 单例对象
*
* @static
* @returns {LoaddingService}
* @memberof LoaddingService
*/
public static getInstance(): LoaddingService {
if (!LoaddingService.loaddingService) {
LoaddingService.loaddingService = new LoaddingService();
}
return this.loaddingService;
}
/**
* 初始化指令所绑定的元素状态
*
* @param {any} el 指令所绑定的元素
* @param {any} binding 指令附加参数
* @memberof LoaddingService
*/
public initElement(el:any, binding:any){
if(binding && binding.arg){
// 工具栏按钮
if(Object.is(binding.arg,'i-button')){
if(el.getElementsByTagName('i') && el.getElementsByTagName('i').length >0){
let iconElement:any = el.getElementsByTagName('i')[0];
iconElement.setAttribute('ownclassname',iconElement.className);
}
}
}
}
/**
* 设置loadding状态
*
* @param {any} el 指令所绑定的元素
* @param {any} binding 指令附加参数
* @memberof LoaddingService
*/
public setLoadState(el:any, binding:any){
this.loaddingStateEvent = Http.getInstance().getNotifyObject().subscribe((result:any) =>{
if(result && result.action && Object.is(result.action,'setloadstate')){
if(result && result.state){
this.addLoadState(el,binding);
}else{
this.removeLoadState(el,binding);
}
}
})
}
/**
* 添加loadding状态
*
* @param {any} el 指令所绑定的元素
* @param {any} binding 指令附加参数
* @memberof LoaddingService
*/
public addLoadState(el:any, binding:any){
if(binding && binding.arg){
el.style.pointerEvents = 'none';
// 工具栏按钮
if(Object.is(binding.arg,'i-button')){
if(el.getElementsByTagName('i') && el.getElementsByTagName('i').length >0){
let iconElement:any = el.getElementsByTagName('i')[0];
iconElement.className = "el-icon-loading";
}
}
}
}
/**
* 移除loadding状态
*
* @param {any} el 指令所绑定的元素
* @param {any} binding 指令附加参数
* @memberof LoaddingService
*/
public removeLoadState(el:any, binding:any){
if(binding && binding.arg){
el.style.pointerEvents = '';
// 工具栏按钮
if(Object.is(binding.arg,'i-button')){
if(el.getElementsByTagName('i') && el.getElementsByTagName('i').length >0){
let iconElement:any = el.getElementsByTagName('i')[0];
iconElement.className = iconElement.getAttribute('ownclassname');
}
}
}
}
/**
* 清除资源（取消订阅）
*
* @param {any} el 指令所绑定的元素
* @param {any} binding 指令附加参数
* @memberof LoaddingService
*/
public clearResource(el:any, binding:any){
if(this.loaddingStateEvent){
this.loaddingStateEvent.unsubscribe();
}
}
}
export default {
bind(el:any, binding:any) {
LoaddingService.getInstance().initElement(el, binding);
},
inserted(el:any, binding:any) {
LoaddingService.getInstance().setLoadState(el, binding);
},
unbind(el:any, binding:any) {
LoaddingService.getInstance().clearResource(el,binding);
}
}