feat: implement sortable columns with visual indicators and sorting l…

adminforth/documentation/docs/tutorial/03-Customization/15-afcl.md

@@ -973,6 +973,141 @@ async function loadPageData(data) {
 ```
 > 👆 The page size is used as the limit for pagination.
 
+### Sorting
+
+Table supports column sorting out of the box.
+
+- By default, columns are NOT sortable. Enable sorting per column with `sortable: true`.
+- Clicking a sortable header cycles sorting in a tri-state order:
+  - none → ascending → descending → none
+  - When it returns to "none", the sorting is cleared.
+
+Basic example (client-side sorting when `data` is an array):
+```html
+<Table
+  :columns="[
+    { label: 'Name', fieldName: 'name', sortable: true },
+    { label: 'Age', fieldName: 'age', sortable: true },
+    // disable sort for a specific column
+    { label: 'Country', fieldName: 'country', sortable: false },
+  ]"
+  :data="[
+    { name: 'John', age: 30, country: 'US' },
+    { name: 'Rick', age: 25, country: 'CA' },
+    { name: 'Alice', age: 35, country: 'BR' },
+    { name: 'Colin', age: 40, country: 'AU' },
+  ]"
+  :pageSize="3"
+/>
+```
+
+You can also predefine a default sort:
+
+```html
+<Table
+  :columns="[
+    { label: 'Name', fieldName: 'name', sortable: true },
+    { label: 'Age', fieldName: 'age', sortable: true },
+    { label: 'Country', fieldName: 'country' },
+  ]"
+  :data="rows"
+  defaultSortField="age"
+  defaultSortDirection="desc"
+/>
+```
+
+Notes:
+- Client-side sorting supports nested field paths using dot-notation, e.g. `user.name`.
+- When a column is not currently sorted, a subtle double-arrow icon is shown; arrows switch up/down for ascending/descending.
+
+#### Nested field path sorting
+
+You can sort by nested properties of objects in rows using dot-notation in `fieldName`.
+
+Example:
+
+```html
+<Table
+  :columns="[
+    { label: 'User Name', fieldName: 'user.name', sortable: true },
+    { label: 'User Email', fieldName: 'user.email', sortable: true },
+    { label: 'City', fieldName: 'user.address.city', sortable: true },
+    { label: 'Country', fieldName: 'user.address.country' },
+  ]"
+  :data="[
+    { user: { name: 'Alice', email: 'alice@example.com', address: { city: 'Berlin', country: 'DE' } } },
+    { user: { name: 'Bob', email: 'bob@example.com', address: { city: 'Paris', country: 'FR' } } },
+    { user: { name: 'Carlos', email: 'carlos@example.com', address: { city: 'Madrid', country: 'ES' } } },
+    { user: { name: 'Dana', email: 'dana@example.com', address: { city: 'Rome', country: 'IT' } } },
+    { user: { name: 'Eve', email: 'eve@example.com', address: { city: null, country: 'US' } } },
+  ]"
+  :pageSize="3"
+/>
+```
+
+Behavior details:
+- The path is split on dots and resolved step by step: `user.address.city`.
+- Missing or `null` nested values are pushed to the bottom for ascending order (and top for descending) because `null/undefined` are treated as greater than defined values in asc ordering.
+- Works the same for client-side sorting and for server-side loaders: when using an async loader the same `sortField` (e.g. `user.address.city`) is passed so you can implement equivalent ordering on the backend.
+- Date objects at nested paths are detected and compared chronologically.
+- Numeric comparison is stable for mixed numeric strings via Intl.Collator with numeric option.
+
+Edge cases to consider in your own data:
+- Deeply missing branches like `user.profile.settings.locale` simply result in `undefined` and will follow the null ordering logic above.
+- Arrays are not traversed; if you need array-specific sorting you should pre-normalize data into scalar fields before passing to the table.
+
+### Server-side sorting
+
+When you provide an async function to `data`, the table will pass the current sort along with pagination params.
+
+Signature of the loader receives:
+
+```ts
+type LoaderArgs = {
+  offset: number;
+  limit: number;
+  sortField?: string; // undefined when unsorted
+  sortDirection?: 'asc' | 'desc'; // only when sortField is set
+}
+```
+
+Example using `fetch`:
+
+```ts
+async function loadPageData({ offset, limit, sortField, sortDirection }) {
+  const url = new URL('/api/products', window.location.origin);
+  url.searchParams.set('offset', String(offset));
+  url.searchParams.set('limit', String(limit));
+  if (sortField) url.searchParams.set('sortField', sortField);
+  if (sortField && sortDirection) url.searchParams.set('sortDirection', sortDirection);
+
+  const { data, total } = callAdminForthApi('getProducts', {limit, offset, sortField, sortDirection});
+  return { data, total };
+}
+
+<Table
+  :columns="[
+    { label: 'ID', fieldName: 'id' },
+    { label: 'Title', fieldName: 'title' },
+    { label: 'Price', fieldName: 'price' },
+  ]"
+  :data="loadPageData"
+  :pageSize="10"
+/>
+```
+
+Events you can listen to:
+
+```html
+<Table
+  :columns="columns"
+  :data="loadPageData"
+  @update:sortField="(f) => currentSortField = f"
+  @update:sortDirection="(d) => currentSortDirection = d"
+  @sort-change="({ field, direction }) => console.log('sort changed', field, direction)"
+/>
+```
+
 ### Table loading states
 
 For tables where you load data externally and pass them to `data` prop as array (including case with front-end pagination) you might want to show skeleton loaders in table externaly using `isLoading` props.

adminforth/spa/src/afcl/Table.vue

@@ -4,13 +4,30 @@
       <table class="afcl-table w-full text-sm text-left rtl:text-right text-lightTableText dark:text-darkTableText overflow-x-auto">
           <thead class="afcl-table-thread text-xs text-lightTableHeadingText uppercase bg-lightTableHeadingBackground dark:bg-darkTableHeadingBackground dark:text-darkTableHeadingText">
             <tr>
-              <th scope="col" class="px-6 py-3" ref="headerRefs" :key="`header-${column.fieldName}`"
+              <th
+                scope="col"
+                class="px-6 py-3"
+                ref="headerRefs"
+                :key="`header-${column.fieldName}`"
                 v-for="column in columns"
+                :aria-sort="getAriaSort(column)"
+                :class="{ 'cursor-pointer select-none afcl-table-header-sortable': isColumnSortable(column) }"
+                @click="onHeaderClick(column)"
               >
                 <slot v-if="$slots[`header:${column.fieldName}`]" :name="`header:${column.fieldName}`" :column="column" />
-                
-                <span v-else>
+
+                <span v-else class="inline-flex items-center">
                   {{ column.label }}
+                  <span v-if="isColumnSortable(column)" class="text-lightTableHeadingText dark:text-darkTableHeadingText">
+                    <!-- Unsorted -->
+                    <svg v-if="currentSortField !== column.fieldName" class="w-3 h-3 ms-1.5 opacity-30" aria-hidden="true" xmlns="http://www.w3.org/2000/svg" fill="currentColor" viewBox="0 0 24 24"><path d="M8.574 11.024h6.852a2.075 2.075 0 0 0 1.847-1.086 1.9 1.9 0 0 0-.11-1.986L13.736 2.9a2.122 2.122 0 0 0-3.472 0L6.837 7.952a1.9 1.9 0 0 0-.11 1.986 2.074 2.074 0 0 0 1.847 1.086Zm6.852 1.952H8.574a2.072 2.072 0 0 0-1.847 1.087 1.9 1.9 0 0 0 .11 1.985l3.426 5.05a2.123 2.123 0 0 0 3.472 0l3.427-5.05a1.9 1.9 0 0 0 .11-1.985 2.074 2.074 0 0 0-1.846-1.087Z"/></svg>
+
+                    <!-- Sorted ascending -->
+                    <svg v-else-if="currentSortDirection === 'asc'" class="w-3 h-3 ms-1.5" fill="currentColor" viewBox="0 0 24 24"><path d="M8.574 11.024h6.852a2.075 2.075 0 0 0 1.847-1.086 1.9 1.9 0 0 0-.11-1.986L13.736 2.9a2.122 2.122 0 0 0-3.472 0L6.837 7.952a1.9 1.9 0 0 0-.11 1.986 2.074 2.074 0 0 0 1.847 0z"/></svg>
+
+                    <!-- Sorted descending -->
+                    <svg v-else class="w-3 h-3 ms-1.5 rotate-180" fill="currentColor" viewBox="0 0 24 24"><path d="M8.574 11.024h6.852a2.075 2.075 0 0 0 1.847-1.086 1.9 1.9 0 0 0-.11-1.986L13.736 2.9a2.122 2.122 0 0 0-3.472 0L6.837 7.952a1.9 1.9 0 0 0-.11 1.986 2.074 2.074 0 0 0 1.847 0z"/></svg>
+                  </span>
                 </span>
               </th>
             </tr>
@@ -141,13 +158,16 @@
       columns: {
         label: string,
         fieldName: string,
+        sortable?: boolean,
       }[],
       data: {
         [key: string]: any,
-      }[] | ((params: { offset: number, limit: number }) => Promise<{data: {[key: string]: any}[], total: number}>),
+      }[] | ((params: { offset: number, limit: number, sortField?: string, sortDirection?: 'asc' | 'desc' }) => Promise<{data: {[key: string]: any}[], total: number}>),
       evenHighlights?: boolean,
       pageSize?: number,
       isLoading?: boolean,
+      defaultSortField?: string,
+      defaultSortDirection?: 'asc' | 'desc',
     }>(), {
       evenHighlights: true,
       pageSize: 5,
@@ -163,8 +183,17 @@
   const isLoading = ref(false);
   const dataResult = ref<{data: {[key: string]: any}[], total: number}>({data: [], total: 0});
   const isAtLeastOneLoading = ref<boolean[]>([false]);
+  const currentSortField = ref<string | undefined>(props.defaultSortField);
+  const currentSortDirection = ref<'asc' | 'desc'>(props.defaultSortDirection ?? 'asc');
 
   onMounted(() => {
+    // If defaultSortField points to a non-sortable column, ignore it
+    if (currentSortField.value) {
+      const col = props.columns?.find(c => c.fieldName === currentSortField.value);
+      if (!col || !isColumnSortable(col)) {
+        currentSortField.value = undefined;
+      }
+    }
     refresh();
   });
 
@@ -181,6 +210,14 @@
     emit('update:tableLoading', isLoading.value || props.isLoading);
   });
 
+  watch([() => currentSortField.value, () => currentSortDirection.value], () => {
+    if (currentPage.value !== 1) currentPage.value = 1;
+    refresh();
+    emit('update:sortField', currentSortField.value);
+    emit('update:sortDirection', currentSortField.value ? currentSortDirection.value : undefined);
+    emit('sort-change', { field: currentSortField.value, direction: currentSortDirection.value });
+  }, { immediate: false });
+
   const totalPages = computed(() => {
     return dataResult.value?.total ? Math.ceil(dataResult.value.total / props.pageSize) : 1;
   });
@@ -196,6 +233,9 @@
 
   const emit = defineEmits([
     'update:tableLoading',
+    'update:sortField',
+    'update:sortDirection',
+    'sort-change',
   ]);
 
   function onPageInput(event: any) {
@@ -231,7 +271,12 @@
       isLoading.value = true;
       const currentLoadingIndex = currentPage.value;
       isAtLeastOneLoading.value[currentLoadingIndex] = true;
-      const result = await props.data({ offset: (currentLoadingIndex - 1) * props.pageSize, limit: props.pageSize });
+      const result = await props.data({
+        offset: (currentLoadingIndex - 1) * props.pageSize,
+        limit: props.pageSize,
+        sortField: currentSortField.value,
+        ...(currentSortField.value ? { sortDirection: currentSortDirection.value } : {}),
+      });
       isAtLeastOneLoading.value[currentLoadingIndex] = false;
       if (isAtLeastOneLoading.value.every(v => v === false)) {
         isLoading.value = false;
@@ -240,7 +285,9 @@
     } else if (typeof props.data === 'object' && Array.isArray(props.data)) {
       const start = (currentPage.value - 1) * props.pageSize;
       const end = start + props.pageSize;
-      dataResult.value = { data: props.data.slice(start, end), total: props.data.length };
+      const total = props.data.length;
+      const sorted = sortArrayData(props.data, currentSortField.value, currentSortDirection.value);
+      dataResult.value = { data: sorted.slice(start, end), total };
     }
   }
 
@@ -252,4 +299,48 @@
     }
   }
 
+function isColumnSortable(col:{fieldName:string; sortable?:boolean}) {
+  // Sorting is controlled per column; default is NOT sortable. Enable with `sortable: true`.
+  return col.sortable === true;
+}
+
+function onHeaderClick(col:{fieldName:string; sortable?:boolean}) {
+  if (!isColumnSortable(col)) return;
+  if (currentSortField.value !== col.fieldName) {
+    currentSortField.value = col.fieldName;
+    currentSortDirection.value = props.defaultSortDirection ?? 'asc';
+  } else {
+    currentSortDirection.value =
+      currentSortDirection.value === 'asc' ? 'desc' :
+      currentSortField.value ? (currentSortField.value = undefined, props.defaultSortDirection ?? 'asc') :
+      'asc';
+  }
+}
+
+function getAriaSort(col:{fieldName:string; sortable?:boolean}) {
+  if (!isColumnSortable(col)) return undefined;
+  if (currentSortField.value !== col.fieldName) return 'none';
+  return currentSortDirection.value === 'asc' ? 'ascending' : 'descending';
+}
+
+const collator = new Intl.Collator(undefined, { numeric: true, sensitivity: 'base' });
+
+function sortArrayData(data:any[], sortField?:string, dir:'asc'|'desc'='asc') {
+  if (!sortField) return data;
+  // Helper function to get nested properties by path
+  const getByPath = (o:any, p:string) => p.split('.').reduce((a:any,k)=>a?.[k], o);
+  return [...data].sort((a,b) => {
+    const av = getByPath(a, sortField), bv = getByPath(b, sortField);
+    // Handle null/undefined values
+    if (av == null && bv == null) return 0;
+    // Handle null/undefined values
+    if (av == null) return 1; if (bv == null) return -1;
+    // Data types
+    if (av instanceof Date && bv instanceof Date) return dir === 'asc' ? av.getTime() - bv.getTime() : bv.getTime() - av.getTime();
+    // Strings and numbers
+    if (typeof av === 'number' && typeof bv === 'number') return dir === 'asc' ? av - bv : bv - av;
+    const cmp = collator.compare(String(av), String(bv));
+    return dir === 'asc' ? cmp : -cmp;
+  });
+}
 </script>