Merge pull request #168 from clevelandcs/urlfilter

Add support for sharing table views via link

client/src/utils/saveload.ts

@@ -1,7 +1,6 @@
 import React from "react";
 import { CrudFilter, CrudSort } from "@refinedev/core";
 import { isLocalStorageAvailable } from "./support";
-
 interface Pagination {
   current: number;
   pageSize: number;
@@ -16,9 +15,9 @@ export interface TableState {
 
 export function useInitialTableState(tableId: string): TableState {
   const [initialState] = React.useState(() => {
-    const savedSorters = isLocalStorageAvailable ? localStorage.getItem(`${tableId}-sorters`) : null;
-    const savedFilters = isLocalStorageAvailable ? localStorage.getItem(`${tableId}-filters`) : null;
-    const savedPagination = isLocalStorageAvailable ? localStorage.getItem(`${tableId}-pagination`) : null;
+    const savedSorters = hasHashProperty('sorters') ? getHashProperty('sorters') : isLocalStorageAvailable ? localStorage.getItem(`${tableId}-sorters`) : null;
+    const savedFilters = hasHashProperty('filters') ? getHashProperty('filters') : isLocalStorageAvailable ? localStorage.getItem(`${tableId}-filters`) : null;
+    const savedPagination = hasHashProperty('pagination') ? getHashProperty('pagination') : isLocalStorageAvailable ? localStorage.getItem(`${tableId}-pagination`) : null;
     const savedShowColumns = isLocalStorageAvailable ? localStorage.getItem(`${tableId}-showColumns`) : null;
 
     const sorters = savedSorters ? JSON.parse(savedSorters) : [{ field: "id", order: "asc" }];
@@ -32,21 +31,41 @@ export function useInitialTableState(tableId: string): TableState {
 
 export function useStoreInitialState(tableId: string, state: TableState) {
   React.useEffect(() => {
+    if (state.sorters.length > 0 && JSON.stringify(state.sorters) != JSON.stringify([{ field: "id", order: "asc" }])) {
       if (isLocalStorageAvailable) {
         localStorage.setItem(`${tableId}-sorters`, JSON.stringify(state.sorters));
       }
+      setURLHash(`sorters`, JSON.stringify(state.sorters));
+    } else {
+      localStorage.removeItem(`${tableId}-sorters`)
+      removeURLHash('sorters');
+    }
   }, [tableId, state.sorters]);
 
   React.useEffect(() => {
+    let filters = state.filters.filter(f => f.value.length != 0);
+    if (filters.length > 0) {
       if (isLocalStorageAvailable) {
-      localStorage.setItem(`${tableId}-filters`, JSON.stringify(state.filters));
+        localStorage.setItem(`${tableId}-filters`, JSON.stringify(filters));
+        setURLHash('filters', JSON.stringify(state.filters));
+      }
+    } else {
+      localStorage.removeItem(`${tableId}-filters`)
+      removeURLHash(`filters`);
     }
   }, [tableId, state.filters]);
 
   React.useEffect(() => {
+    if (JSON.stringify(state.pagination) != JSON.stringify({ current: 1, pageSize: 20 })) {
       if (isLocalStorageAvailable) {
         localStorage.setItem(`${tableId}-pagination`, JSON.stringify(state.pagination));
       }
+      setURLHash(`pagination`, JSON.stringify(state.pagination));
+    } else {
+      localStorage.removeItem(`${tableId}-pagination`)
+      removeURLHash(`pagination`);
+    }
+
   }, [tableId, state.pagination]);
 
   React.useEffect(() => {
@@ -57,6 +76,7 @@ export function useStoreInitialState(tableId: string, state: TableState) {
         localStorage.setItem(`${tableId}-showColumns`, JSON.stringify(state.showColumns));
       }
     }
+
   }, [tableId, state.showColumns]);
 }
 
@@ -74,3 +94,29 @@ export function useSavedState<T>(id: string, defaultValue: T) {
 
   return [state, setState] as const;
 }
+
+function setURLHash(Id: string, value: string) {
+  const params = new URLSearchParams(window.location.hash.substring(1));
+  if (!params.has(Id)) {
+    params.append(Id, value)
+  }
+  params.set(Id, value);
+  window.location.hash = params.toString();
+}
+function removeURLHash(Id: string) {
+  const params = new URLSearchParams(window.location.hash.substring(1));
+  if (params.has(Id)) {
+    params.delete(Id)
+  }
+  window.location.hash = params.toString();
+}
+
+function getHashProperty(Id: string) {
+  const hash = new URLSearchParams(window.location.hash.substring(1));
+  return hash.get(Id);
+}
+
+function hasHashProperty(property: string): boolean {
+  const hash = new URLSearchParams(window.location.hash.substring(1));
+  return hash.has(property);
+}