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comparison src/render/GraphView.ts @ 107:042bd3361339

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author drewp@bigasterisk.com
date Sun, 13 Mar 2022 22:02:30 -0700
parents src/render/graph_view.ts@2468f2227d22
children 5e6840229a05
comparison
equal deleted inserted replaced
106:2468f2227d22 107:042bd3361339
1 import { html, TemplateResult } from "lit";
2 import { DataFactory, Literal, NamedNode, Quad, Store, Term } from "n3";
3 import { NodeDisplay } from "./NodeDisplay";
4 import { SuffixLabels } from "../layout/suffixLabels";
5 import { Layout } from "../layout/Layout";
6 import { TableDesc, ViewConfig } from "../layout/ViewConfig";
7
8 const { namedNode } = DataFactory;
9
10 // https://github.com/rdfjs/N3.js/issues/265
11 if ((Literal.prototype as any).hashCode === undefined) {
12 (Literal.prototype as any).hashCode = () => 0;
13 }
14 if ((NamedNode.prototype as any).hashCode === undefined) {
15 (NamedNode.prototype as any).hashCode = () => 0;
16 }
17 export class GraphView {
18 url: string;
19 view: View;
20 graph: Store;
21 nodeDisplay: NodeDisplay;
22 constructor(url: string, viewUrl: string, graph: Store) {
23 this.url = url;
24 this.view = new View(viewUrl);
25 this.graph = graph;
26
27 const labels = new SuffixLabels();
28 this._addLabelsForAllTerms(this.graph, labels);
29
30 this.view.ready.then(() => {
31 this._addLabelsForAllTerms(this.view.graph, labels);
32 });
33 this.nodeDisplay = new NodeDisplay(labels);
34 }
35
36 _addLabelsForAllTerms(graph: Store, labels: SuffixLabels) {
37 graph.forEach(
38 (q: Quad) => {
39 if (q.subject.termType === "NamedNode") {
40 labels.planDisplayForNode(q.subject);
41 }
42 if (q.predicate.termType === "NamedNode") {
43 labels.planDisplayForNode(q.predicate);
44 }
45 if (q.object.termType === "NamedNode") {
46 labels.planDisplayForNode(q.object);
47 }
48 if (q.object.termType === "Literal" && q.object.datatype) {
49 labels.planDisplayForNode(q.object.datatype);
50 }
51 },
52 null,
53 null,
54 null,
55 null
56 );
57 }
58
59 _subjPredObjsBlock(subj: NamedNode) {
60 const columns = predsForSubj(this.graph, subj);
61 return html`
62 <div class="subject">
63 ${this.nodeDisplay.render(subj)}
64 <!-- todo: special section for uri/type-and-icon/label/comment -->
65 <div>
66 ${columns.map((p) => {
67 return this._predObjsBlock(subj, p);
68 })}
69 </div>
70 </div>
71 `;
72 }
73
74 _objCell(obj: Term) {
75 return html`
76 <div class="object">
77 ${this.nodeDisplay.render(obj)}
78 <!-- indicate what source or graph said this stmt -->
79 </div>
80 `;
81 }
82
83 _predObjsBlock(subj: NamedNode, pred: NamedNode) {
84 const objsSet = new Set<Term>();
85 this.graph.forEach(
86 (q: Quad) => {
87 objsSet.add(q.object);
88 },
89 subj,
90 pred,
91 null,
92 null
93 );
94 const objs = Array.from(objsSet.values());
95 objs.sort();
96 return html`
97 <div class="predicate">
98 ${this.nodeDisplay.render(pred)}
99 <div>${objs.map(this._objCell.bind(this))}</div>
100 </div>
101 `;
102 }
103
104 _drawObj(obj: Term): TemplateResult {
105 return html` <div>${this.nodeDisplay.render(obj)}</div> `;
106 }
107
108 _drawColumnHead(pred: NamedNode): TemplateResult {
109 return html` <th>${this.nodeDisplay.render(pred)}</th> `;
110 }
111
112 _thead(layout: MultiSubjsTypeBlockLayout): TemplateResult {
113 return html`
114 <thead>
115 <tr>
116 <th></th>
117 ${layout.preds.map(this._drawColumnHead.bind(this))}
118 </tr>
119 </thead>
120 `;
121 }
122
123 _msbCell(layout: MultiSubjsTypeBlockLayout, subj: NamedNode) {
124 return (pred: NamedNode): TemplateResult => {
125 const objs = layout.graphCells.get(layout.makeCellKey(subj, pred));
126 if (!objs || !objs.size) {
127 return html` <td></td> `;
128 }
129 const objsList = Array.from(objs);
130 objsList.sort();
131 return html` <td>${objsList.map(this._drawObj.bind(this))}</td> `;
132 };
133 }
134
135 _instanceRow(layout: MultiSubjsTypeBlockLayout) {
136 return (subj: NamedNode): TemplateResult => {
137 return html`
138 <tr>
139 <td>${this.nodeDisplay.render(subj)}</td>
140 ${layout.preds.map(this._msbCell(layout, subj))}
141 </tr>
142 `;
143 };
144 }
145
146 _multiSubjsTypeBlock(byType: TypeToSubjs, table: TableDesc) {
147 const layout = new MultiSubjsTypeBlockLayout(this.graph, byType, table);
148
149 let typeNames = [html`${this.nodeDisplay.render(table.primary)}`];
150 if (table.joins) {
151 typeNames.push(html` joined with [`);
152 for (let j of table.joins) {
153 typeNames.push(html`${this.nodeDisplay.render(j)}`);
154 }
155 typeNames.push(html`]`);
156 }
157
158 return html`
159 <div>[icon] Resources of type ${typeNames}</div>
160 <div class="typeBlockScroll">
161 <table class="typeBlock">
162 ${this._thead(layout)}
163 ${layout.subjs.map(this._instanceRow(layout))}
164 </table>
165 </div>
166 `;
167 }
168
169 async makeTemplate(): Promise<TemplateResult> {
170 await this.view.ready;
171 const { byType, typesPresent, untypedSubjs } = groupByRdfType(this.graph);
172 let viewTitle = html` (no view)`;
173 if (this.view.url) {
174 viewTitle = html` using view
175 <a href="${this.view.url}">${this.view.label()}</a>`;
176 }
177 const tables = this.view.toplevelTables(typesPresent);
178 return html`
179 <section>
180 <h2>
181 Current graph (<a href="${this.url}">${this.url}</a>)${viewTitle}
182 </h2>
183 <div>
184 <!-- todo: graphs and provenance.
185 These statements are all in the
186 <span data-bind="html: $root.createCurie(graphUri())">...</span> graph.-->
187 </div>
188 ${tables.map((t: TableDesc) => this._multiSubjsTypeBlock(byType, t))}
189 <div class="spoGrid">
190 ${untypedSubjs.map(this._subjPredObjsBlock.bind(this))}
191 </div>
192 </section>
193 `;
194 }
195 }