material-ui/src/toolbar/toolbar-separator.jsx

Material Design UI components built with React

const React = require('react');
const StylePropable = require('../mixins/style-propable');
const DefaultRawTheme = require('../styles/raw-themes/light-raw-theme');
const ThemeManager = require('../styles/theme-manager');

const ToolbarSeparator = React.createClass({

  mixins: [StylePropable],

  contextTypes: {
    muiTheme: React.PropTypes.object,
  },

  //for passing default theme context to children
  childContextTypes: {
    muiTheme: React.PropTypes.object,
  },

  getChildContext () {
    return {
      muiTheme: this.state.muiTheme,
    };
  },

  getInitialState () {
    return {
      muiTheme: this.context.muiTheme ? this.context.muiTheme : ThemeManager.getMuiTheme(DefaultRawTheme),
    };
  }, 

  //to update theme inside state whenever a new theme is passed down
  //from the parent / owner using context
  componentWillReceiveProps (nextProps, nextContext) {
    let newMuiTheme = nextContext.muiTheme ? nextContext.muiTheme : this.state.muiTheme;
    this.setState({muiTheme: newMuiTheme});
  },

  getTheme() {
    return this.state.muiTheme.toolbar;
  },

  getSpacing() {
    return this.state.muiTheme.rawTheme.spacing;
  },

  render() {
    let styles = this.prepareStyles({
      backgroundColor: this.getTheme().separatorColor,
      display: 'inline-block',
      height: this.getSpacing().desktopGutterMore,
      marginLeft: this.getSpacing().desktopGutter,
      position: 'relative',
      top: ((this.getTheme().height - this.getSpacing().desktopGutterMore) / 2),
      width: 1,
    }, this.props.style);

    return (
      <span className={this.props.className} style={styles}/>
    );
  },

});

module.exports = ToolbarSeparator;