query-viewer.js
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	import { inject } from 'aurelia-framework';
	import { QueryViewerService } from 'views/query-viewer/query-viewer.service';

	// -- config -- //
	const nodesPerScreen = 10;

	@inject(QueryViewerService)
	export class QueryViewer {
	constructor(service) {
	this.screenIndex = 0;
	this.showCircles = false;
	this.service = service;
	this.service
	.fetchPreviousQueries()
	.then(result => {
	const queries = result.queryResults;
	const nodes = result.adapters
	return service.getScreens(nodes, queries);
	})
	.then(screens => {
	this.screens = screens;
	this.showCircles = this.screens.length > 1;
	})
	.catch(error => console.log(error));
	}

	// -- @todo: optimize with 'computedFrom' decorator or value converter-- //
	get slidePct() {
	return String(-100 * this.screenIndex) + '%';
	}
	}