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annotate src/streamed-graph.ts @ 22:e90d9021c6a0

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add back s-g code; this breaks the build a little. WIP
author drewp@bigasterisk.com
date Fri, 13 Dec 2019 01:39:29 -0800
parents 7ca4ff2088c3
children e0f5da648199
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2 // these are just for timebank- move them out
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3 import '@polymer/polymer/lib/elements/dom-bind.js';
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5 import { PolymerElement, html } from '@polymer/polymer';
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6 import { render } from 'lit-html';
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7 import { N3Store } from "n3"
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8 import { customElement, property, computed } from '@polymer/decorators';
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10 import { GraphView } from './graph_view';
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11 import { StreamedGraphClient } from './streamed_graph_client';
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13 interface VersionedGraph { version: number, store: N3Store|undefined };
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15 @customElement('streamed-graph')
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16 class StreamedGraph extends PolymerElement {
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17 @property({ type: String })
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18 url: string = '';
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20 @property({ type: Object })
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21 graph!: VersionedGraph;
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23 @property({ type: Boolean })
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24 expanded: boolean = false;
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26 // @computed('expanded')
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27 expandAction(): string {
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28 return this.expanded ? '-' : '+';
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29 }
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31 @property({ type: String })
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32 status: string = '';
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34 sg!: StreamedGraphClient;
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35 graphView!: Element;
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36 graphViewDirty = true;
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38 static get template() {
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39 return html`
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40 <link rel="stylesheet" href="../src/streamed-graph.css">
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41 <div id="ui">
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42 <span class="expander"><button on-click="toggleExpand">{{expandAction}}</button></span>
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43 StreamedGraph <a href="{{url}}">[source]</a>:
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44 {{status}}
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45 </div>
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46 <div id="graphView"></div>`;
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47 }
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49 ready() {
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50 super.ready();
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51 this.graph = { version: -1, store: undefined };
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52 this.graphView = (this.shadowRoot as ShadowRoot).getElementById("graphView") as Element;
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54 this._onUrl(this.url); // todo: watch for changes and rebuild
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55 }
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57 toggleExpand(ev: Event) {
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58 this.expanded = !this.expanded;
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59 if (this.expanded) {
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60 this.redrawGraph()
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61 } else {
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62 this.graphViewDirty = false;
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63 render(null, this.graphView);
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64 }
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65 }
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67 redrawGraph() {
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68 this.graphViewDirty = true;
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69 requestAnimationFrame(this._redrawLater.bind(this));
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70 }
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72 _onUrl(url: string) {
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73 if (this.sg) { this.sg.close(); }
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74 this.sg = new StreamedGraphClient(
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75 url,
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76 this.onGraphChanged.bind(this),
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77 this.set.bind(this, 'status'),
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78 [],//window.NS,
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79 []
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80 );
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81 }
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83 onGraphChanged() {
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84 this.graph = {
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85 version: this.graph.version + 1,
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86 store: this.sg.store
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87 };
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88 if (this.expanded) {
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89 this.redrawGraph();
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90 }
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91 }
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93 _redrawLater() {
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94 if (!this.graphViewDirty) return;
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95 render(new GraphView(this.url, (this.graph as VersionedGraph).store as N3Store).makeTemplate(), this.graphView);
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96 this.graphViewDirty = false;
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97 }
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98 }