[SIP-5] Refactor pivot table (apache#5705)

* extract slice and formData

* rename variables

* update proptypes and add comments

superset/assets/src/visualizations/pivot_table.js

@@ -1,51 +1,78 @@
 import dt from 'datatables.net-bs';
 import 'datatables.net-bs/css/dataTables.bootstrap.css';
 import $ from 'jquery';
-
+import PropTypes from 'prop-types';
 import { d3format, fixDataTableBodyHeight } from '../modules/utils';
 import './pivot_table.css';
 
 dt(window, $);
 
-module.exports = function (slice, payload) {
-  const container = slice.container;
-  const fd = slice.formData;
-  const height = container.height();
-  let cols = payload.data.columns;
-  if (Array.isArray(cols[0])) {
-    cols = cols.map(col => col[0]);
-  }
+const propTypes = {
+  data: PropTypes.shape({
+    // TODO: replace this with raw data in SIP-6
+    html: PropTypes.string,
+    columns: PropTypes.arrayOf(PropTypes.oneOfType([
+      PropTypes.string,
+      PropTypes.arrayOf(PropTypes.string),
+    ])),
+  }),
+  height: PropTypes.number,
+  columnFormats: PropTypes.objectOf(PropTypes.string),
+  groupBy: PropTypes.arrayOf(PropTypes.string),
+  numberFormat: PropTypes.string,
+  verboseMap: PropTypes.objectOf(PropTypes.string),
+};
+
+function PivotTable(element, props) {
+  PropTypes.checkPropTypes(propTypes, props, 'prop', 'PivotTable');
+
+  const {
+    data,
+    height,
+    columnFormats,
+    groupBy,
+    numberFormat,
+    verboseMap,
+  } = props;
+
+  const { html, columns } = data;
+  const container = element;
+  const $container = $(element);
 
   // payload data is a string of html with a single table element
-  container.html(payload.data.html);
+  container.innerHTML = html;
+
+  const cols = Array.isArray(columns[0])
+    ? columns.map(col => col[0])
+    : columns;
 
   // jQuery hack to set verbose names in headers
   const replaceCell = function () {
     const s = $(this)[0].textContent;
-    $(this)[0].textContent = slice.datasource.verbose_map[s] || s;
+    $(this)[0].textContent = verboseMap[s] || s;
   };
-  slice.container.find('thead tr:first th').each(replaceCell);
-  slice.container.find('thead tr th:first-child').each(replaceCell);
+  $container.find('thead tr:first th').each(replaceCell);
+  $container.find('thead tr th:first-child').each(replaceCell);
 
   // jQuery hack to format number
-  slice.container.find('tbody tr').each(function () {
+  $container.find('tbody tr').each(function () {
     $(this).find('td').each(function (i) {
       const metric = cols[i];
-      const format = slice.datasource.column_formats[metric] || fd.number_format || '.3s';
+      const format = columnFormats[metric] || numberFormat || '.3s';
       const tdText = $(this)[0].textContent;
-      if (!isNaN(tdText) && tdText !== '') {
+      if (!Number.isNaN(tdText) && tdText !== '') {
         $(this)[0].textContent = d3format(format, tdText);
       }
     });
   });
 
-  if (fd.groupby.length === 1) {
+  if (groupBy.length === 1) {
     // When there is only 1 group by column,
     // we use the DataTable plugin to make the header fixed.
     // The plugin takes care of the scrolling so we don't need
     // overflow: 'auto' on the table.
-    container.css('overflow', 'hidden');
-    const table = container.find('table').DataTable({
+    container.style.overflow = 'hidden';
+    const table = $container.find('table').DataTable({
       paging: false,
       searching: false,
       bInfo: false,
@@ -54,12 +81,37 @@ module.exports = function (slice, payload) {
       scrollX: true,
     });
     table.column('-1').order('desc').draw();
-    fixDataTableBodyHeight(container.find('.dataTables_wrapper'), height);
+    fixDataTableBodyHeight($container.find('.dataTables_wrapper'), height);
   } else {
     // When there is more than 1 group by column we just render the table, without using
     // the DataTable plugin, so we need to handle the scrolling ourselves.
     // In this case the header is not fixed.
-    container.css('overflow', 'auto');
-    container.css('height', `${height + 10}px`);
+    container.style.overflow = 'auto';
+    container.style.height = `${height + 10}px`;
   }
-};
+}
+
+function adaptor(slice, payload) {
+  const { selector, formData, datasource } = slice;
+  const {
+    groupby: groupBy,
+    number_format: numberFormat,
+  } = formData;
+  const {
+    column_formats: columnFormats,
+    verbose_map: verboseMap,
+  } = datasource;
+  const element = document.querySelector(selector);
+
+  return PivotTable(element, {
+    data: payload.data,
+    height: slice.height(),
+    columnFormats,
+    groupBy,
+    numberFormat,
+    verboseMap,
+  });
+}
+
+export default adaptor;
+