src/components/app/timeline/TimelineControlsComponent.js


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import React from "react";
import PlayButtonContainer from "../../../containers/app/timeline/PlayButtonContainer";
import { convertTickToPercentage } from "../../../util/timeline";

class TimelineControlsComponent extends React.Component {
  onTimelineClick(e) {
    const percentage = e.nativeEvent.offsetX / this.timeline.clientWidth;
    const tick = Math.floor(percentage * (this.props.lastSimulatedTick + 1));
    this.props.goToTick(tick);
  }

  render() {
    return (
      <div className="timeline-controls">
        <PlayButtonContainer />
        <div
          className="timeline"
          ref={timeline => (this.timeline = timeline)}
          onClick={this.onTimelineClick.bind(this)}
        >
          <div
            className="time-marker"
            style={{
              left: convertTickToPercentage(
                this.props.currentTick,
                this.props.lastSimulatedTick
              )
            }}
          />
          {this.props.sectionTicks.map(sectionTick => (
            <div
              key={sectionTick}
              className="section-marker"
              style={{
                left: convertTickToPercentage(
                  sectionTick,
                  this.props.lastSimulatedTick
                )
              }}
              title="Topology changes at this tick"
            />
          ))}
        </div>
      </div>
    );
  }
}

export default TimelineControlsComponent;