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import { Http } from '@/utils';
import { Subscription } from 'rxjs';
/**
* 按钮loadding状态服务
*
* @export
* @class ButtonLoadingService
*/
export class ButtonLoadingService {
/**
* 单例变量声明
*
* @private
* @static
* @type {ButtonLoadingService}
* @memberof ButtonLoadingService
*/
private static ButtonLoadingService: ButtonLoadingService;
/**
* loadding状态事件
*
* @public
* @type {(Subscription | undefined)}
* @memberof ButtonLoadingService
*/
public buttonLoadingStateEvent: Subscription | null = null;
/**
* @description dom映射对象
* @type {Map<string, any>}
* @memberof ButtonLoadingService
*/
public domMap: Map<string, any> = new Map();
/**
* 获取 ButtonLoadingService 单例对象
*
* @static
* @returns {ButtonLoadingService}
* @memberof ButtonLoadingService
*/
public static getInstance(): ButtonLoadingService {
if (!ButtonLoadingService.ButtonLoadingService) {
ButtonLoadingService.ButtonLoadingService = new ButtonLoadingService();
}
return this.ButtonLoadingService;
}
/**
* 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 ButtonLoadingService
*/
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);
const uuid: string = String(el.__vue__._uid);
el.setAttribute('uuid',uuid);
this.domMap.set(uuid, iconElement);
}
}
}
}
/**
* 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 ButtonLoadingService
*/
public setLoadState(el:any, binding:any){
if (!this.buttonLoadingStateEvent) {
this.buttonLoadingStateEvent = Http.getInstance().getNotifyObject().subscribe((result:any) =>{
if(result && result.action && Object.is(result.action,'setloadstate')){
if(result && result.state){
this.addLoadState();
}else{
this.removeLoadState();
}
}
})
}
}
/**
* 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 ButtonLoadingService
*/
public addLoadState(){
this.domMap.forEach((dom: any, key: string) => {
dom.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 ButtonLoadingService
*/
public removeLoadState(){
this.domMap.forEach((dom: any, key: string) => {
dom.className = dom.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 ButtonLoadingService
*/
public clearResource(el:any, binding:any){
if(this.buttonLoadingStateEvent && this.domMap.size == 0){
this.buttonLoadingStateEvent.unsubscribe();
this.buttonLoadingStateEvent = null;
}
const uuid: string = el.getAttribute('uuid');
if (uuid && this.domMap.has(uuid)) {
this.domMap.delete(uuid);
}
}
}
export default {
bind(el:any, binding:any) {
ButtonLoadingService.getInstance().initElement(el, binding);
},
inserted(el:any, binding:any) {
ButtonLoadingService.getInstance().setLoadState(el, binding);
},
unbind(el:any, binding:any) {
ButtonLoadingService.getInstance().clearResource(el,binding);
}
}