path: root/dashboard/assets/components/Main.jsx

// @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 {MENU} from '../common';
import Logs from './Logs';
import Footer from './Footer';
import type {Content} from '../types/content';

// styles contains the constant styles of the component.
const styles = {
    wrapper: {
        display:       'flex',
        flexDirection: 'column',
        width:         '100%',
    },
    content: {
        flex:      1,
        overflow: 'auto',
    },
};

// themeStyles returns the styles generated from the theme for the component.
const themeStyles = theme => ({
    content: {
        backgroundColor: theme.palette.background.default,
        padding:         theme.spacing.unit * 3,
    },
});

export type Props = {
    classes:      Object,
    active:       string,
    content:      Content,
    shouldUpdate: Object,
    send:         string => void,
};

// Main renders the chosen content.
class Main extends Component<Props> {
    constructor(props) {
        super(props);
        this.container = React.createRef();
        this.content = React.createRef();
    }

    getSnapshotBeforeUpdate() {
        if (this.content && typeof this.content.beforeUpdate === 'function') {
            return this.content.beforeUpdate();
        }
        return null;
    }

    componentDidUpdate(prevProps, prevState, snapshot) {
        if (this.content && typeof this.content.didUpdate === 'function') {
            this.content.didUpdate(prevProps, prevState, snapshot);
        }
    }

    onScroll = () => {
        if (this.content && typeof this.content.onScroll === 'function') {
            this.content.onScroll();
        }
    };

    render() {
        const {
            classes, active, content, shouldUpdate,
        } = this.props;

        let children = null;
        switch (active) {
        case MENU.get('home').id:
        case MENU.get('chain').id:
        case MENU.get('txpool').id:
        case MENU.get('network').id:
        case MENU.get('system').id:
            children = <div>Work in progress.</div>;
            break;
        case MENU.get('logs').id:
            children = (
                <Logs
                    ref={(ref) => { this.content = ref; }}
                    container={this.container}
                    send={this.props.send}
                    content={this.props.content}
                    shouldUpdate={shouldUpdate}
                />
            );
        }

        return (
            <div style={styles.wrapper}>
                <div
                    className={classes.content}
                    style={styles.content}
                    ref={(ref) => { this.container = ref; }}
                    onScroll={this.onScroll}
                >
                    {children}
                </div>
                <Footer
                    general={content.general}
                    system={content.system}
                    shouldUpdate={shouldUpdate}
                />
            </div>
        );
    }
}

export default withStyles(themeStyles)(Main);