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annotate src/graph_view.ts @ 96:4d19759d0d9a

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factor NodeDisplay
author drewp@bigasterisk.com
date Thu, 13 Jan 2022 21:32:18 -0800
parents a5f53d397526
children 26c55d5d5202
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1 import { html, TemplateResult } from "lit";
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2 import { DataFactory, Literal, NamedNode, Quad, Store, Term, Util } from "n3";
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3 import { NodeDisplay } from "./NodeDisplay";
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4 import { SuffixLabels } from "./suffixLabels";
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5 import {
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6 groupByRdfType,
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7 MultiSubjsTypeBlockLayout,
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8 predsForSubj,
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9 TypeToSubjs,
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10 } from "./tabulate";
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11 import { View } from "./view_loader";
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12
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13 const { namedNode } = DataFactory;
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14
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15 // https://github.com/rdfjs/N3.js/issues/265
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16 if ((Literal.prototype as any).hashCode === undefined) {
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17 (Literal.prototype as any).hashCode = () => 0;
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18 }
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19 if ((NamedNode.prototype as any).hashCode === undefined) {
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20 (NamedNode.prototype as any).hashCode = () => 0;
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21 }
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22 export class GraphView {
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23 url: string;
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24 view: View;
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25 graph: Store;
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26 nodeDisplay: NodeDisplay;
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27 constructor(url: string, viewUrl: string, graph: Store) {
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28 this.url = url;
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29 this.view = new View(viewUrl);
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30 this.graph = graph;
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31
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32 const labels = new SuffixLabels();
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33 this._addLabelsForAllTerms(labels);
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34 this.nodeDisplay = new NodeDisplay(labels);
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35 }
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36
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37 _addLabelsForAllTerms(labels: SuffixLabels) {
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38 return this.graph.forEach(
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39 (q: Quad) => {
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40 if (q.subject.termType === "NamedNode") {
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41 labels.planDisplayForNode(q.subject);
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42 }
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43 if (q.predicate.termType === "NamedNode") {
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44 labels.planDisplayForNode(q.predicate);
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45 }
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46 if (q.object.termType === "NamedNode") {
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47 labels.planDisplayForNode(q.object);
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48 }
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49 if (q.object.termType === "Literal" && q.object.datatype) {
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50 labels.planDisplayForNode(q.object.datatype);
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51 }
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52 },
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53 null,
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54 null,
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55 null,
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56 null
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57 );
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58 }
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59
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60 _subjPredObjsBlock(subj: NamedNode) {
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61 const columns = predsForSubj(this.graph, subj);
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62 return html`
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63 <div class="subject">
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64 ${this.nodeDisplay.render(subj)}
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65 <!-- todo: special section for uri/type-and-icon/label/comment -->
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66 <div>
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67 ${columns.map((p) => {
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68 return this._predObjsBlock(subj, p);
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69 })}
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70 </div>
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71 </div>
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72 `;
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73 }
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74
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75 _objCell(obj: Term) {
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76 return html`
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77 <div class="object">
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78 ${this.nodeDisplay.render(obj)}
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79 <!-- indicate what source or graph said this stmt -->
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80 </div>
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81 `;
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82 }
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84 _predObjsBlock(subj: NamedNode, pred: NamedNode) {
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85 const objsSet = new Set<Term>();
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86 this.graph.forEach(
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87 (q: Quad) => {
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88 objsSet.add(q.object);
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89 },
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90 subj,
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91 pred,
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92 null,
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93 null
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94 );
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95 const objs = Array.from(objsSet.values());
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96 objs.sort();
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97 return html`
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98 <div class="predicate">
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99 ${this.nodeDisplay.render(pred)}
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100 <div>${objs.map(this._objCell.bind(this))}</div>
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101 </div>
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102 `;
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103 }
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104
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105 _drawObj(obj: Term): TemplateResult {
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106 return html` <div>${this.nodeDisplay.render(obj)}</div> `;
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107 }
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108
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109 _drawColumnHead(pred: NamedNode): TemplateResult {
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110 return html` <th>${this.nodeDisplay.render(pred)}</th> `;
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111 }
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112
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113 _thead(layout: MultiSubjsTypeBlockLayout): TemplateResult {
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114 return html`
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115 <thead>
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116 <tr>
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117 <th></th>
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118 ${layout.preds.map(this._drawColumnHead.bind(this))}
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119 </tr>
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120 </thead>
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121 `;
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122 }
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123
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124 _msbCell(layout: MultiSubjsTypeBlockLayout, subj: NamedNode) {
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125 return (pred: NamedNode): TemplateResult => {
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126 const objs = layout.graphCells.get(layout.makeCellKey(subj, pred));
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127 if (!objs || !objs.size) {
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128 return html` <td></td> `;
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129 }
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130 const objsList = Array.from(objs);
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131 objsList.sort();
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132 return html` <td>${objsList.map(this._drawObj.bind(this))}</td> `;
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133 };
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134 }
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135
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136 _instanceRow(layout: MultiSubjsTypeBlockLayout) {
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137 return (subj: NamedNode): TemplateResult => {
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138 return html`
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139 <tr>
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140 <td>${this.nodeDisplay.render(subj)}</td>
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141 ${layout.preds.map(this._msbCell(layout, subj))}
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142 </tr>
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143 `;
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144 };
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145 }
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146
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147 _multiSubjsTypeBlock(byType: TypeToSubjs, typeUri: NamedNode) {
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148 const layout = new MultiSubjsTypeBlockLayout(this.graph, byType, typeUri);
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149
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150 return html`
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151 <div>[icon] ${this.nodeDisplay.render(typeUri)} type resources</div>
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152 <div class="typeBlockScroll">
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153 <table class="typeBlock">
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154 ${this._thead(layout)} ${layout.subjs.map(this._instanceRow(layout))}
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155 </table>
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156 </div>
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157 `;
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158 }
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159
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160 async makeTemplate(): Promise<TemplateResult> {
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161 await this.view.ready;
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162 const { byType, typesPresent, untypedSubjs } = groupByRdfType(this.graph);
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163 let viewTitle = html` (no view)`;
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164 if (this.view.url) {
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165 viewTitle = html` using view <a href="${this.view.url}">${this.view.label()}</a>`;
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166 }
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167 const typesToShow = this.view.typesToShow(typesPresent);
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168 return html`
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169 <section>
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170 <h2>
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171 Current graph (<a href="${this.url}">${this.url}</a>)${viewTitle}
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172 </h2>
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173 <div>
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174 <!-- todo: graphs and provenance.
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175 These statements are all in the
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176 <span data-bind="html: $root.createCurie(graphUri())">...</span> graph.-->
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177 </div>
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178 ${typesToShow.map((t: NamedNode) =>
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179 this._multiSubjsTypeBlock(byType, t)
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180 )}
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181 <div class="spoGrid">
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182 ${untypedSubjs.map(this._subjPredObjsBlock.bind(this))}
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183 </div>
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184 </section>
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185 `;
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186 }
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187 }