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/**
* 视图缓存
*
* @export
* @class ViewCache
*/
export class ViewCache {
/**
* 唯一实例
*
* @private
* @static
* @memberof ViewCacheService
*/
private static instance: ViewCache;
/**
* 获取唯一实例
*
* @static
* @return {*} {ViewCacheService}
* @memberof ViewCacheService
*/
public static getInstance(): ViewCache {
if (!ViewCache.instance) {
ViewCache.instance = new ViewCache();
}
return this.instance;
}
/**
* 视图缓存
*
* @type {any[]}
* @memberof ViewCacheService
*/
private $viewCache: any[] = [];
/**
* 激活的视图缓存
*
* @type {string}
* @memberof ViewCacheService
*/
private $activeViewCache: string = '';
/**
* 是否启用缓存
*
* @private
* @type {boolean}
* @memberof ViewCache
*/
private $enableCache: boolean = true;
/**
* 设置是否启用缓存
*
* @memberof ViewCache
*/
set enableCache(value: boolean) {
this.$enableCache = value;
if (!this.$enableCache) {
this.$viewCache = [];
}
}
/**
* 获取视图缓存
*
* @readonly
* @memberof ViewCache
*/
get viewCache() {
return this.$viewCache;
}
/**
* 获取当前激活视图
*
* @readonly
* @memberof ViewCache
*/
get activeViewCache() {
return this.$activeViewCache
}
/**
* 设置视图缓存(目前仅添加html视图的缓存)
*
* @param {*} appView
* @memberof ViewCacheService
*/
setViewCache(appView: any, fullPath: string) {
const target = this.$viewCache.find((item: any) => {
return item.fullPath == fullPath;
});
if (!target && this.$enableCache) {
if (appView.viewType === 'DEHTMLVIEW') {
this.$viewCache.push({ appView, fullPath: fullPath });
}
}
this.$activeViewCache = fullPath;
}
/**
* 设置当前激活的视图缓存
*
* @param {string} fullPath
* @memberof ViewCacheService
*/
setActiveViewCache(fullPath: string) {
this.$activeViewCache = fullPath;
}
/**
* 当前激活视图是否为缓存视图
*
* @readonly
* @memberof ViewCacheService
*/
get isViewCache() {
let state: boolean = false;
this.$viewCache.forEach((view: any) => {
if (view.fullPath == this.$activeViewCache) {
state = true
}
})
return state
}
/**
* 删除视图缓存
*
* @param {string} fullPath
* @memberof ViewCacheService
*/
removeViewCache(fullPath: string) {
const index = this.$viewCache.findIndex((item: any) => {
return item.fullPath == fullPath;
});
if (index != -1) {
this.$viewCache.splice(index, 1);
}
}
/**
* 删除其他视图缓存
*
* @param {string} fullPath
* @memberof ViewCacheService
*/
removeOtherViewCache(fullPath: string) {
const index = this.$viewCache.findIndex((item: any) => {
return item.fullPath == fullPath;
});
if (index != -1) {
const currentView = this.$viewCache[index];
this.$viewCache = [currentView];
this.$activeViewCache = fullPath;
}
}
/**
* 清空视图缓存
*
* @memberof ViewCacheService
*/
clearViewCache() {
this.$viewCache = [];
this.$activeViewCache = '';
}
}
export const ViewCacheService = ViewCache.getInstance();