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comparison src/ConfiguredSources.ts @ 128:5a1a79f54779

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big rewrite
author drewp@bigasterisk.com
date Fri, 05 May 2023 21:26:36 -0700
parents
children 9347277e8311
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127:d2580faef057 128:5a1a79f54779
1 import { NamedNode } from "n3";
2 import { SubEvent } from "sub-events";
3 import { MultiStore } from "./MultiStore";
4 import { SourceGraph } from "./SourceGraph";
5 import { ViewConfig } from "./layout/ViewConfig";
6
7 // Connect <streamed-graph>, <sg-source>, <sg-view>, MultiStore, and ViewConfig.
8 // Makes the (single) MultiStore and the (updated as needed) ViewConfig.
9
10 // This is poorly named since it deals in both the <sg-source> elements that you
11 // "configured" plus the set of SourceGraph objs that are actually connected to remote graphs.
12
13 // sic private- this is just for documenting the interface more clearly
14 interface IConfiguredSources {
15 // outputs
16 graph: MultiStore; // const- only the graph contents will change
17 viewConfig: ViewConfig;
18
19 // methods
20 newSourceGraph: (s: SourceGraph) => void;
21 lostSourceGraph: (s: SourceGraph) => void;
22 viewUriChanged: (v: NamedNode) => void;
23
24 // events
25 viewConfigChanged: SubEvent<ViewConfig>;
26 }
27
28 export class ConfiguredSources implements IConfiguredSources {
29 graph: MultiStore;
30 viewConfig: ViewConfig;
31
32 viewConfigChanged: SubEvent<ViewConfig> = new SubEvent();
33
34 private viewUri: NamedNode = new NamedNode("empty-view-config");
35
36 constructor() {
37 this.graph = new MultiStore();
38 this.graph.graphChanged.subscribe(() => this.viewConfigMaybeChanged());
39 this.viewConfig = new ViewConfig(this.graph, this.viewUri);
40 }
41
42 private viewConfigMaybeChanged() {
43 this.viewConfig = new ViewConfig(this.graph, this.viewUri);
44 this.viewConfigChanged.emit(this.viewConfig);
45 }
46
47 newSourceGraph(s: SourceGraph) {
48 this.graph.newStore(s);
49 this.viewConfigMaybeChanged();
50 }
51
52 lostSourceGraph(s: SourceGraph) {
53 throw new Error("notimplemented");
54 this.viewConfigMaybeChanged();
55 }
56
57 viewUriChanged(v: NamedNode) {
58 if (v && v == this.viewUri) {
59 return;
60 }
61 this.viewUri = v;
62 this.viewConfigMaybeChanged();
63 }
64 }