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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 List, {ListItem, ListItemIcon, ListItemText} from 'material-ui/List';
import Icon from 'material-ui/Icon';
import Transition from 'react-transition-group/Transition';
import {Icon as FontAwesome} from 'react-fa';
import {MENU, DURATION} from './Common';
// menuDefault is the default style of the menu.
const menuDefault = {
transition: `margin-left ${DURATION}ms`,
};
// menuTransition is the additional style of the menu corresponding to the transition's state.
const menuTransition = {
entered: {marginLeft: -200},
};
// Styles for the SideBar component.
const styles = theme => ({
list: {
background: theme.palette.background.appBar,
},
listItem: {
minWidth: theme.spacing.unit * 3,
},
icon: {
fontSize: theme.spacing.unit * 3,
},
});
export type Props = {
classes: Object,
opened: boolean,
changeContent: () => {},
};
// SideBar renders the sidebar of the dashboard.
class SideBar extends Component<Props> {
constructor(props) {
super(props);
// clickOn contains onClick event functions for the menu items.
// Instantiate only once, and reuse the existing functions to prevent the creation of
// new function instances every time the render method is triggered.
this.clickOn = {};
MENU.forEach((menu) => {
this.clickOn[menu.id] = (event) => {
event.preventDefault();
props.changeContent(menu.id);
};
});
}
shouldComponentUpdate(nextProps) {
return nextProps.opened !== this.props.opened;
}
menuItems = (transitionState) => {
const {classes} = this.props;
const children = [];
MENU.forEach((menu) => {
children.push(
<ListItem button key={menu.id} onClick={this.clickOn[menu.id]} className={classes.listItem}>
<ListItemIcon>
<Icon className={classes.icon}>
<FontAwesome name={menu.icon} />
</Icon>
</ListItemIcon>
<ListItemText
primary={menu.title}
style={{
...menuDefault,
...menuTransition[transitionState],
padding: 0,
}}
/>
</ListItem>,
);
});
return children;
};
// menu renders the list of the menu items.
menu = (transitionState) => {
const {classes} = this.props; // The classes property is injected by withStyles().
return (
<div className={classes.list}>
<List>
{this.menuItems(transitionState)}
</List>
</div>
);
};
render() {
return (
<Transition mountOnEnter in={this.props.opened} timeout={{enter: DURATION}}>
{this.menu}
</Transition>
);
}
}
export default withStyles(styles)(SideBar);
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