Function handleFileInput

assets/compare_trajectory/app.js:1928–1935

(side, event)

      return trace.tokenSourceLabel;
    },
    async handleFileInput(side, event) {
      const file = event.target.files && event.target.files[0];
      if (!file) {
        return;
      }
      await this.loadFile(side, file);
      event.target.value = '';
    },
    async handleDrop(side, event) {
      this.dragTarget = null;
      const file = event.dataTransfer && event.dataTransfer.files && event.dataTransfer.files[0];