webamp/js/components/PlaylistWindow/TrackCell.tsx

import React from "react";
import { connect } from "react-redux";
import classnames from "classnames";
import {
  CLICKED_TRACK,
  CTRL_CLICKED_TRACK,
  SHIFT_CLICKED_TRACK,
  PLAY_TRACK
} from "../../actionTypes";
import * as Selectors from "../../selectors";
import { AppState, Dispatch, PlaylistStyle } from "../../types";

interface OwnProps {
  id: number;
  index: number;
  handleMoveClick: (e: React.MouseEvent<HTMLDivElement>) => void;
}

interface StateProps {
  selected: boolean;
  current: boolean;
  skinPlaylistStyle: PlaylistStyle;
}

interface DispatchProps {
  shiftClick: (e: React.MouseEvent<HTMLDivElement>) => void;
  ctrlClick: (e: React.MouseEvent<HTMLDivElement>) => void;
  click: () => void;
  onDoubleClick: () => void;
}

class TrackCell extends React.Component<OwnProps & StateProps & DispatchProps> {
  _onMouseDown = (e: React.MouseEvent<HTMLDivElement>) => {
    if (e.shiftKey) {
      this.props.shiftClick(e);
      return;
    } else if (e.metaKey || e.ctrlKey) {
      this.props.ctrlClick(e);
      return;
    }

    if (!this.props.selected) {
      this.props.click();
    }

    this.props.handleMoveClick(e);
  };

  render() {
    const {
      skinPlaylistStyle,
      selected,
      current,
      children,
      onDoubleClick
    } = this.props;
    const style: React.CSSProperties = {
      backgroundColor: selected ? skinPlaylistStyle.selectedbg : undefined,
      color: current ? skinPlaylistStyle.current : undefined
    };
    return (
      <div
        className={classnames("track-cell", { selected, current })}
        style={style}
        onClick={e => e.stopPropagation()}
        onMouseDown={this._onMouseDown}
        onContextMenu={e => e.preventDefault()}
        onDoubleClick={onDoubleClick}
      >
        {children}
      </div>
    );
  }
}

const mapStateToProps = (state: AppState, ownProps: OwnProps): StateProps => {
  return {
    skinPlaylistStyle: Selectors.getSkinPlaylistStyle(state),
    selected: Selectors.getSelectedTrackIds(state).has(ownProps.id),
    current: Selectors.getCurrentTrackId(state) === ownProps.id
  };
};

const mapDispatchToProps = (
  dispatch: Dispatch,
  ownProps: OwnProps
): DispatchProps => ({
  shiftClick: e => {
    e.preventDefault();
    return dispatch({ type: SHIFT_CLICKED_TRACK, index: ownProps.index });
  },
  ctrlClick: e => {
    e.preventDefault();
    return dispatch({ type: CTRL_CLICKED_TRACK, index: ownProps.index });
  },
  click: () => dispatch({ type: CLICKED_TRACK, index: ownProps.index }),
  onDoubleClick: () => dispatch({ type: PLAY_TRACK, id: ownProps.id })
});

export default connect(
  mapStateToProps,
  mapDispatchToProps
)(TrackCell);