ReactTable: adds possibility to resize columns (#23365)

* Refactor: adds one form of column resize to React-Table

* Refactor: resizing works

* Refactor: adds onColumnResize

* Refactor: fixes so sorting is not invoked when resizing

* Refactor: fixes styles for resizer

* Refactor: removes callback call

* Refactor: changes after comments

* Refactor: updates code according to new api

* Improved styling

* fix

* Refactor: adds back resizable panel option and defaults to false

Co-authored-by: Torkel Ödegaard <torkel@grafana.com>

packages/grafana-ui/src/components/Table/BackgroundColorCell.tsx

@@ -20,11 +20,14 @@ export const BackgroundColoredCell: FC<TableCellProps> = props => {
 
   const styles: CSSProperties = {
     background: `linear-gradient(120deg, ${bgColor2}, ${displayValue.color})`,
-    borderRadius: '0px',
     color: 'white',
     height: tableStyles.cellHeight,
     padding: tableStyles.cellPadding,
   };
 
-  return <div style={styles}>{formattedValueToString(displayValue)}</div>;
+  return (
+    <div className={tableStyles.tableCell} style={styles}>
+      {formattedValueToString(displayValue)}
+    </div>
+  );
 };

packages/grafana-ui/src/components/Table/Table.tsx

 import React, { FC, memo, useMemo } from 'react';
 import { DataFrame, Field } from '@grafana/data';
-import { Cell, Column, HeaderGroup, useBlockLayout, useSortBy, useTable } from 'react-table';
+import { Cell, Column, HeaderGroup, useBlockLayout, useResizeColumns, useSortBy, useTable } from 'react-table';
 import { FixedSizeList } from 'react-window';
 import useMeasure from 'react-use/lib/useMeasure';
 import { getColumns, getTableRows, getTextAlign } from './utils';
 import { useTheme } from '../../themes';
-import { TableFilterActionCallback } from './types';
-import { getTableStyles } from './styles';
+import { ColumnResizeActionCallback, TableFilterActionCallback } from './types';
+import { getTableStyles, TableStyles } from './styles';
 import { TableCell } from './TableCell';
 import { Icon } from '../Icon/Icon';
 import { CustomScrollbar } from '../CustomScrollbar/CustomScrollbar';
 
+const COLUMN_MIN_WIDTH = 150;
+
 export interface Props {
   data: DataFrame;
   width: number;
@@ -18,23 +20,47 @@ export interface Props {
   /** Minimal column width specified in pixels */
   columnMinWidth?: number;
   noHeader?: boolean;
+  resizable?: boolean;
   onCellClick?: TableFilterActionCallback;
+  onColumnResize?: ColumnResizeActionCallback;
 }
 
-export const Table: FC<Props> = memo(({ data, height, onCellClick, width, columnMinWidth, noHeader }) => {
+export const Table: FC<Props> = memo(
+  ({ data, height, onCellClick, width, columnMinWidth = COLUMN_MIN_WIDTH, noHeader, resizable = false }) => {
     const theme = useTheme();
     const [ref, headerRowMeasurements] = useMeasure();
     const tableStyles = getTableStyles(theme);
-  const memoizedColumns = useMemo(() => getColumns(data, width, columnMinWidth ?? 150), [data, width, columnMinWidth]);
+    const memoizedColumns = useMemo(() => getColumns(data, width, columnMinWidth), [data, width, columnMinWidth]);
     const memoizedData = useMemo(() => getTableRows(data), [data]);
 
-  const { getTableProps, headerGroups, rows, prepareRow } = useTable(
-    {
+    const defaultColumn = React.useMemo(
+      () => ({
+        minWidth: memoizedColumns.reduce((minWidth, column) => {
+          if (column.width) {
+            const width = typeof column.width === 'string' ? parseInt(column.width, 10) : column.width;
+            return Math.min(minWidth, width);
+          }
+          return minWidth;
+        }, columnMinWidth),
+      }),
+      [columnMinWidth, memoizedColumns]
+    );
+
+    const options: any = useMemo(
+      () => ({
         columns: memoizedColumns,
         data: memoizedData,
-    },
-    useSortBy,
-    useBlockLayout
+        disableResizing: !resizable,
+        defaultColumn,
+      }),
+      [memoizedColumns, memoizedData, resizable, defaultColumn]
+    );
+
+    const { getTableProps, headerGroups, rows, prepareRow, totalColumnsWidth } = useTable(
+      options,
+      useBlockLayout,
+      useResizeColumns,
+      useSortBy
     );
 
     const RenderRow = React.useCallback(
@@ -58,50 +84,59 @@ export const Table: FC<Props> = memo(({ data, height, onCellClick, width, column
       [prepareRow, rows]
     );
 
-  let totalWidth = 0;
-
-  for (const headerGroup of headerGroups) {
-    for (const header of headerGroup.headers) {
-      totalWidth += header.width as number;
-    }
-  }
-
     return (
       <div {...getTableProps()} className={tableStyles.table}>
         <CustomScrollbar hideVerticalTrack={true}>
+          <div style={{ width: `${totalColumnsWidth}px` }}>
             {!noHeader && (
               <div>
-            {headerGroups.map((headerGroup: HeaderGroup) => (
+                {headerGroups.map((headerGroup: HeaderGroup) => {
+                  return (
                     <div className={tableStyles.thead} {...headerGroup.getHeaderGroupProps()} ref={ref}>
                       {headerGroup.headers.map((column: Column, index: number) =>
-                  renderHeaderCell(column, tableStyles.headerCell, data.fields[index])
+                        renderHeaderCell(column, tableStyles, data.fields[index])
                       )}
                     </div>
-            ))}
+                  );
+                })}
               </div>
             )}
             <FixedSizeList
               height={height - headerRowMeasurements.height}
               itemCount={rows.length}
               itemSize={tableStyles.rowHeight}
-          width={totalWidth ?? width}
+              width={'100%'}
               style={{ overflow: 'hidden auto' }}
             >
               {RenderRow}
             </FixedSizeList>
+          </div>
         </CustomScrollbar>
       </div>
     );
-});
+  }
+);
+
+Table.displayName = 'Table';
+
+function renderHeaderCell(column: any, tableStyles: TableStyles, field?: Field) {
+  const headerProps = column.getHeaderProps();
+  if (column.canResize) {
+    headerProps.style.userSelect = column.isResizing ? 'none' : 'auto'; // disables selecting text while resizing
+  }
 
-function renderHeaderCell(column: any, className: string, field?: Field) {
-  const headerProps = column.getHeaderProps(column.getSortByToggleProps());
   headerProps.style.textAlign = getTextAlign(field);
 
   return (
-    <div className={className} {...headerProps}>
+    <div className={tableStyles.headerCell} {...headerProps}>
+      {column.canSort && (
+        <div {...column.getSortByToggleProps()}>
           {column.render('Header')}
           {column.isSorted && (column.isSortedDesc ? <Icon name="caret-down" /> : <Icon name="caret-up" />)}
         </div>
+      )}
+      {!column.canSort && <div>{column.render('Header')}</div>}
+      {column.canResize && <div {...column.getResizerProps()} className={tableStyles.resizeHandle} />}
+    </div>
   );
 }

packages/grafana-ui/src/components/Table/TableCell.tsx

@@ -32,7 +32,7 @@ export const TableCell: FC<Props> = ({ cell, field, tableStyles, onCellClick })
   }
 
   return (
-    <div {...cellProps} onClick={onClick}>
+    <div {...cellProps} onClick={onClick} className={tableStyles.tableCellWrapper}>
       {cell.render('Cell', { field, tableStyles })}
     </div>
   );

packages/grafana-ui/src/components/Table/styles.ts

@@ -11,14 +11,18 @@ export interface TableStyles {
   thead: string;
   headerCell: string;
   tableCell: string;
+  tableCellWrapper: string;
   row: string;
   theme: GrafanaTheme;
+  resizeHandle: string;
 }
 
 export const getTableStyles = stylesFactory(
   (theme: GrafanaTheme): TableStyles => {
     const colors = theme.colors;
-    const headerBg = theme.isLight ? colors.gray98 : colors.gray15;
+    const headerBg = colors.panelBorder;
+    const headerBorderColor = theme.isLight ? colors.gray70 : colors.gray05;
+    const resizerColor = theme.isLight ? colors.blue77 : colors.blue95;
     const padding = 6;
     const lineHeight = theme.typography.lineHeight.md;
     const bodyFontSize = 14;
@@ -41,23 +45,55 @@ export const getTableStyles = stylesFactory(
         overflow-y: auto;
         overflow-x: hidden;
         background: ${headerBg};
+        position: relative;
       `,
       headerCell: css`
         padding: ${padding}px 10px;
         cursor: pointer;
         white-space: nowrap;
         color: ${colors.blue};
+        border-right: 1px solid ${headerBorderColor};
+
+        &:last-child {
+          border-right: none;
+        }
       `,
       row: css`
         label: row;
         border-bottom: 1px solid ${headerBg};
       `,
+      tableCellWrapper: css`
+        border-right: 1px solid ${headerBg};
+
+        &:last-child {
+          border-right: none;
+        }
+      `,
       tableCell: css`
         padding: ${padding}px 10px;
         text-overflow: ellipsis;
         white-space: nowrap;
         overflow: hidden;
       `,
+      resizeHandle: css`
+        label: resizeHandle;
+        cursor: col-resize !important;
+        display: inline-block;
+        border-right: 2px solid ${resizerColor};
+        opacity: 0;
+        transition: opacity 0.2s ease-in-out;
+        width: 10px;
+        height: 100%;
+        position: absolute;
+        right: 0;
+        top: 0;
+        z-index: ${theme.zIndex.dropdown};
+        touch-action: none;
+
+        &:hover {
+          opacity: 1;
+        }
+      `,
     };
   }
 );

packages/grafana-ui/src/components/Table/types.ts

@@ -23,6 +23,7 @@ export interface TableRow {
 }
 
 export type TableFilterActionCallback = (key: string, value: string) => void;
+export type ColumnResizeActionCallback = (field: Field, width: number) => void;
 
 export interface TableCellProps extends CellProps<any> {
   tableStyles: TableStyles;

public/app/plugins/panel/table2/TablePanel.tsx

-// Libraries
 import React, { Component } from 'react';
 
-// Types
 import { Table } from '@grafana/ui';
-import { PanelProps } from '@grafana/data';
+import { Field, FieldMatcherID, PanelProps } from '@grafana/data';
 import { Options } from './types';
 
 interface Props extends PanelProps<Options> {}
@@ -13,13 +11,39 @@ export class TablePanel extends Component<Props> {
     super(props);
   }
 
+  onColumnResize = (field: Field, width: number) => {
+    const current = this.props.fieldConfig;
+    const matcherId = FieldMatcherID.byName;
+    const prop = 'width';
+    const overrides = current.overrides.filter(
+      o => o.matcher.id !== matcherId || o.matcher.options !== field.name || o.properties[0].id !== prop
+    );
+
+    overrides.push({
+      matcher: { id: matcherId, options: field.name },
+      properties: [{ isCustom: true, id: prop, value: width }],
+    });
+
+    this.props.onFieldConfigChange({
+      ...current,
+      overrides,
+    });
+  };
+
   render() {
-    const { data, height, width, options } = this.props;
+    const {
+      data,
+      height,
+      width,
+      options: { showHeader, resizable },
+    } = this.props;
 
     if (data.series.length < 1) {
       return <div>No Table Data...</div>;
     }
 
-    return <Table height={height - 16} width={width} data={data.series[0]} noHeader={!options.showHeader} />;
+    return (
+      <Table height={height - 16} width={width} data={data.series[0]} noHeader={!showHeader} resizable={resizable} />
+    );
   }
 }

public/app/plugins/panel/table2/TablePanelEditor.tsx

 //// Libraries
-import _ from 'lodash';
 import React, { PureComponent } from 'react';
-
 // Types
 import { PanelEditorProps } from '@grafana/data';
 import { LegacyForms } from '@grafana/ui';

public/app/plugins/panel/table2/module.tsx

@@ -52,4 +52,11 @@ export const plugin = new PanelPlugin<Options, CustomFieldConfig>(TablePanel)
       name: 'Show header',
       description: "To display table's header or not to display",
     });
+  })
+  .setPanelOptions(builder => {
+    builder.addBooleanSwitch({
+      path: 'resizable',
+      name: 'Resizable',
+      description: 'Toggles if table columns are resizable or not',
+    });
   });

public/app/plugins/panel/table2/types.ts

 export interface Options {
   showHeader: boolean;
+  resizable: boolean;
 }
 
 export interface CustomFieldConfig {
@@ -9,4 +10,5 @@ export interface CustomFieldConfig {
 
 export const defaults: Options = {
   showHeader: true,
+  resizable: false,
 };