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+// @flow
+
+// Copyright 2017 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+import React, {Component} from 'react';
+
+import withStyles from 'material-ui/styles/withStyles';
+import AppBar from 'material-ui/AppBar';
+import Toolbar from 'material-ui/Toolbar';
+import Typography from 'material-ui/Typography';
+
+import type {General} from '../types/content';
+
+// styles contains styles for the Header component.
+const styles = theme => ({
+ footer: {
+ backgroundColor: theme.palette.background.appBar,
+ color: theme.palette.getContrastText(theme.palette.background.appBar),
+ zIndex: theme.zIndex.appBar,
+ },
+ toolbar: {
+ paddingLeft: theme.spacing.unit,
+ paddingRight: theme.spacing.unit,
+ display: 'flex',
+ justifyContent: 'flex-end',
+ },
+ light: {
+ color: 'rgba(255, 255, 255, 0.54)',
+ },
+});
+export type Props = {
+ general: General,
+ classes: Object,
+};
+// TODO (kurkomisi): If the structure is appropriate, make an abstraction of the common parts with the Header.
+// Footer renders the header of the dashboard.
+class Footer extends Component<Props> {
+ shouldComponentUpdate(nextProps) {
+ return typeof nextProps.shouldUpdate.logs !== 'undefined';
+ }
+
+ info = (about: string, data: string) => (
+ <Typography type="caption" color="inherit">
+ <span className={this.props.classes.light}>{about}</span> {data}
+ </Typography>
+ );
+
+ render() {
+ const {classes, general} = this.props; // The classes property is injected by withStyles().
+ const geth = general.version ? this.info('Geth', general.version) : null;
+ const commit = general.commit ? this.info('Commit', general.commit.substring(0, 7)) : null;
+
+ return (
+ <AppBar position="static" className={classes.footer}>
+ <Toolbar className={classes.toolbar}>
+ <div>
+ {geth}
+ {commit}
+ </div>
+ </Toolbar>
+ </AppBar>
+ );
+ }
+}
+
+export default withStyles(styles)(Footer);