src/views/process-panel/process-log-code-snippet.tsx

   1 // Copyright (C) The Arvados Authors. All rights reserved.
   2 //
   3 // SPDX-License-Identifier: AGPL-3.0
   4
   5 import React, { useEffect, useRef, useState } from 'react';
   6 import {
   7     MuiThemeProvider,
   8     createMuiTheme,
   9     StyleRulesCallback,
  10     withStyles,
  11     WithStyles
  12 } from '@material-ui/core/styles';
  13 import grey from '@material-ui/core/colors/grey';
  14 import { ArvadosTheme } from 'common/custom-theme';
  15 import { Link, Typography } from '@material-ui/core';
  16 import { navigateTo } from 'store/navigation/navigation-action';
  17 import { Dispatch } from 'redux';
  18 import { connect, DispatchProp } from 'react-redux';
  19 import classNames from 'classnames';
  20
  21 type CssRules = 'root' | 'wordWrap' | 'logText';
  22
  23 const styles: StyleRulesCallback<CssRules> = (theme: ArvadosTheme) => ({
  24     root: {
  25         boxSizing: 'border-box',
  26         overflow: 'auto',
  27         backgroundColor: '#000',
  28         height: `calc(100% - ${theme.spacing.unit * 4}px)`, // so that horizontal scollbar is visible
  29         "& a": {
  30             color: theme.palette.primary.main,
  31         },
  32     },
  33     logText: {
  34         padding: theme.spacing.unit * 0.5,
  35     },
  36     wordWrap: {
  37         whiteSpace: 'pre-wrap',
  38     },
  39 });
  40
  41 const theme = createMuiTheme({
  42     overrides: {
  43         MuiTypography: {
  44             body2: {
  45                 color: grey["200"]
  46             }
  47         }
  48     },
  49     typography: {
  50         fontFamily: 'monospace',
  51         useNextVariants: true,
  52     }
  53 });
  54
  55 interface ProcessLogCodeSnippetProps {
  56     lines: string[];
  57     fontSize: number;
  58     wordWrap?: boolean;
  59 }
  60
  61 const renderLinks = (fontSize: number, dispatch: Dispatch) => (text: string) => {
  62     // Matches UUIDs & PDHs
  63     const REGEX = /[a-z0-9]{5}-[a-z0-9]{5}-[a-z0-9]{15}|[0-9a-f]{32}\+\d+/g;
  64     const links = text.match(REGEX);
  65     if (!links) {
  66         return <Typography style={{ fontSize: fontSize }}>{text}</Typography>;
  67     }
  68     return <Typography style={{ fontSize: fontSize }}>
  69         {text.split(REGEX).map((part, index) =>
  70         <React.Fragment key={index}>
  71             {part}
  72             {links[index] &&
  73             <Link onClick={() => dispatch<any>(navigateTo(links[index]))}
  74                 style={ {cursor: 'pointer'} }>
  75                 {links[index]}
  76             </Link>}
  77         </React.Fragment>
  78         )}
  79     </Typography>;
  80 };
  81
  82 export const ProcessLogCodeSnippet = withStyles(styles)(connect()(
  83     ({classes, lines, fontSize, dispatch, wordWrap}: ProcessLogCodeSnippetProps & WithStyles<CssRules> & DispatchProp) => {
  84         const [followMode, setFollowMode] = useState<boolean>(true);
  85         const scrollRef = useRef<HTMLDivElement>(null);
  86
  87         useEffect(() => {
  88             if (followMode && scrollRef.current && lines.length > 0) {
  89                 // Scroll to bottom
  90                 scrollRef.current.scrollTop = scrollRef.current.scrollHeight;
  91             }
  92         }, [followMode, lines, scrollRef]);
  93
  94         return <MuiThemeProvider theme={theme}>
  95             <div ref={scrollRef} className={classes.root}
  96                 onScroll={(e) => {
  97                     const elem = e.target as HTMLDivElement;
  98                     if (elem.scrollTop + elem.clientHeight >= elem.scrollHeight) {
  99                         setFollowMode(true);
 100                     } else {
 101                         setFollowMode(false);
 102                     }
 103                 }}>
 104                 { lines.map((line: string, index: number) =>
 105                 <Typography key={index} component="pre"
 106                     className={classNames(classes.logText, wordWrap ? classes.wordWrap : undefined)}>
 107                     {renderLinks(fontSize, dispatch)(line)}
 108                 </Typography>
 109                 ) }
 110             </div>
 111         </MuiThemeProvider>
 112     }));