Refactor buttonbar into its own component

Refactor the buttonbar and its associated window resize logic into its
own component.

Closes #465

web/gui-v2/src/components/ListViewButtonBar.jsx

@@ -0,0 +1,200 @@
+import React, { useLayoutEffect, useRef, useState } from 'react';
+import { css } from '@emotion/react';
+import { CSVLink } from 'react-csv';
+import {
+  AddCircleOutline as AddCircleOutlineIcon,
+  Close as CloseIcon,
+  Download as DownloadIcon,
+  Help as HelpIcon,
+} from "@mui/icons-material";
+import { Button } from '@mui/material';
+
+import {
+  HelpTooltip,
+  classes,
+} from '@eto/eto-ui-components';
+
+import { useWindowSize } from '../util';
+
+const styles = {
+  standardText: css`
+    font-family: GTZirkonLight;
+    letter-spacing: 0.00938em;
+    line-height: 1.5;
+    text-transform: uppercase;
+  `,
+  buttonBar: css`
+    background-color: var(--bright-blue-lighter);
+    display: flex;
+    flex-wrap: wrap;
+    padding: 0.5rem;
+
+    button {
+      font-family: GTZirkonLight;
+
+      svg {
+        margin-right: 5px;
+      }
+    }
+  `,
+  buttonBarLeft: css`
+    align-items: center;
+    color: var(--dark-blue);
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.25rem;
+    margin: 6px 8px;
+
+    & > span {
+      align-items: center;
+    }
+  `,
+  activeFilterTooltip: css`
+    .MuiTooltip-tooltip {
+      max-width: 400px;
+
+      li > span {
+        font-family: GTZirkonLight;
+      }
+    }
+  `,
+  activeFiltersText: css`
+    align-items: center;
+    display: flex;
+
+    svg {
+      fill: var(--bright-blue);
+      height: 16px;
+    }
+  `,
+  buttonBarRight: css`
+    display: flex;
+    margin-left: auto;
+  `,
+  buttonBarButton: css`
+    min-width: 40px;
+  `,
+
+};
+
+const BUTTONBAR_PADDING = 16;
+const BUTTONBAR_LEFT_MARGIN = 16;
+const BUTTON_WIDTH_RESET = 145;
+const BUTTON_WIDTH_DOWNLOAD = 182;
+const BUTTON_WIDTH_COLUMNS = 202;
+const BUTTON_WIDTH_NO_LABEL = 45;
+const BUTTONBAR_RIGHT_MIN_WIDTH = 3 * BUTTON_WIDTH_NO_LABEL;
+
+
+const ButtonBar = ({
+  activeFilters,
+  activeFiltersTooltip,
+  currentFilters,
+  exportData,
+  exportHeaders,
+  numCompanies,
+  resetFilters,
+  setDialogOpen,
+  totalRows,
+}) => {
+  const windowSize = useWindowSize();
+
+  // Adjust the visibility of the buttonbar labels based on how much space we have
+  // available based on the viewport width.
+  // TODO: Refactor the buttonbar into a separate component.
+  const buttonBarRef = useRef();
+  const buttonBarLeftRef = useRef();
+  const [buttonBarWidth, setButtonBarWidth] = useState(500);
+  const [buttonBarLeftWidth, setButtonBarLeftWidth] = useState(200);
+  const [showLabelReset, setShowLabelReset] = useState(false);
+  const [showLabelDownload, setShowLabelDownload] = useState(false);
+  const [showLabelColumns, setShowLabelColumns] = useState(false);
+
+  useLayoutEffect(() => {
+    const barBounds = buttonBarRef.current.getBoundingClientRect();
+    setButtonBarWidth(barBounds.width - BUTTONBAR_PADDING);
+    const leftBounds = buttonBarLeftRef.current.getBoundingClientRect();
+    setButtonBarLeftWidth(leftBounds.width + BUTTONBAR_LEFT_MARGIN);
+  }, [currentFilters, windowSize]);
+
+  // The label for Download is hidden first, then Columns, and finally Reset is hidden last.
+  useLayoutEffect(() => {
+    let spaceForButtons = buttonBarWidth - buttonBarLeftWidth;
+    // If we don't have enough space on the first row for the the buttons without *any* labels,
+    // flexbox will wrap us onto the next line, so we have the full buttonbar width to use.
+    if ( spaceForButtons < BUTTONBAR_RIGHT_MIN_WIDTH ) {
+      spaceForButtons = buttonBarWidth;
+    }
+
+    if ( spaceForButtons >= BUTTON_WIDTH_RESET + BUTTON_WIDTH_COLUMNS + BUTTON_WIDTH_DOWNLOAD ) {
+      setShowLabelReset(true);
+      setShowLabelDownload(true);
+      setShowLabelColumns(true);
+    } else if ( spaceForButtons >= BUTTON_WIDTH_RESET + BUTTON_WIDTH_COLUMNS + BUTTON_WIDTH_NO_LABEL) {
+      setShowLabelReset(true);
+      setShowLabelDownload(false);
+      setShowLabelColumns(true);
+    } else if ( spaceForButtons >= BUTTON_WIDTH_RESET + 2*BUTTON_WIDTH_NO_LABEL ) {
+      setShowLabelReset(true);
+      setShowLabelDownload(false);
+      setShowLabelColumns(false);
+    } else {
+      setShowLabelReset(false);
+      setShowLabelDownload(false);
+      setShowLabelColumns(false);
+    }
+  }, [buttonBarWidth, buttonBarLeftWidth]);
+
+
+  return (
+    <div css={styles.buttonBar} ref={buttonBarRef}>
+      <div css={[styles.buttonBarLeft, styles.standardText]} ref={buttonBarLeftRef}>
+        <span>Viewing {numCompanies !== totalRows ? `${numCompanies} of ${totalRows}` : totalRows} companies</span>
+        {activeFilters.length > 0 &&
+          <HelpTooltip css={styles.activeFilterTooltip} text={activeFiltersTooltip}>
+            <span css={styles.activeFiltersText}>
+              ({activeFilters.length} filters active)
+              <HelpIcon />
+            </span>
+          </HelpTooltip>
+        }
+      </div>
+      <div css={styles.buttonBarRight}>
+        <HelpTooltip
+          css={styles.activeFilterTooltip}
+          text={activeFilters.length > 0 && activeFiltersTooltip}
+        >
+          <Button
+            css={styles.buttonBarButton}
+            disabled={activeFilters.length === 0}
+            onClick={resetFilters}
+          >
+            <CloseIcon />
+            <span className={classes([!showLabelReset && "sr-only"])}>
+              Reset filters
+            </span>
+          </Button>
+        </HelpTooltip>
+        <CSVLink data={exportData} filename="eto-parat-export.csv" headers={exportHeaders}>
+          <Button
+            css={styles.buttonBarButton}
+            title="Download the results as a comma-separated value (CSV) file.  Existing sorts will be retained."
+          >
+            <DownloadIcon />
+            <span className={classes([!showLabelDownload && "sr-only"])}>
+              Download results
+            </span>
+          </Button>
+        </CSVLink>
+        <Button css={styles.buttonBarButton} onClick={() => setDialogOpen(true)}>
+          <AddCircleOutlineIcon />
+          <span className={classes([!showLabelColumns && "sr-only"])}>
+            Add/remove columns
+          </span>
+        </Button>
+      </div>
+    </div>
+  );
+};
+
+export default ButtonBar;