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/*
* SPDX-FileCopyrightText: 2023-2024 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
import { makeAutoObservable, observable } from 'mobx';
import type EditorStore from '../editor/EditorStore';
import type {
RelationMetadata,
SemanticsSuccessResult,
} from '../xtext/xtextServiceResults';
export type Visibility = 'all' | 'must' | 'none';
export function getDefaultVisibility(
metadata: RelationMetadata | undefined,
): Visibility {
if (metadata === undefined || metadata.arity <= 0 || metadata.arity > 2) {
return 'none';
}
const { detail } = metadata;
switch (detail.type) {
case 'class':
case 'reference':
case 'opposite':
return 'all';
case 'predicate':
return detail.error ? 'must' : 'none';
default:
return 'none';
}
}
export function isVisibilityAllowed(
metadata: RelationMetadata | undefined,
visibility: Visibility,
): boolean {
if (metadata === undefined || metadata.arity <= 0 || metadata.arity > 2) {
return visibility === 'none';
}
const { detail } = metadata;
if (detail.type === 'predicate' && detail.error) {
// We can't display may matches of error predicates,
// because they have none by definition.
return visibility !== 'all';
}
return true;
}
const TYPE_HASH_HEX_PREFFIX = '_';
export default class GraphStore {
semantics: SemanticsSuccessResult = {
nodes: [],
relations: [],
partialInterpretation: {},
};
relationMetadata = new Map<string, RelationMetadata>();
visibility = new Map<string, Visibility>();
abbreviate = true;
scopes = false;
selectedSymbol: RelationMetadata | undefined;
hexTypeHashes: string[] = [];
private typeHashesMap = new Map<string, number>();
constructor(
private readonly editorStore: EditorStore,
private readonly nameOverride?: string,
) {
makeAutoObservable<GraphStore, 'editorStore'>(this, {
editorStore: false,
semantics: observable.ref,
});
}
getVisibility(relation: string): Visibility {
const visibilityOverride = this.visibility.get(relation);
if (visibilityOverride !== undefined) {
return visibilityOverride;
}
return this.getDefaultVisibility(relation);
}
getDefaultVisibility(relation: string): Visibility {
const metadata = this.relationMetadata.get(relation);
return getDefaultVisibility(metadata);
}
isVisibilityAllowed(relation: string, visibility: Visibility): boolean {
const metadata = this.relationMetadata.get(relation);
return isVisibilityAllowed(metadata, visibility);
}
setVisibility(relation: string, visibility: Visibility): void {
const metadata = this.relationMetadata.get(relation);
if (metadata === undefined || !isVisibilityAllowed(metadata, visibility)) {
return;
}
const defaultVisiblity = getDefaultVisibility(metadata);
if (defaultVisiblity === visibility) {
this.visibility.delete(relation);
} else {
this.visibility.set(relation, visibility);
}
}
cycleVisibility(relation: string): void {
const metadata = this.relationMetadata.get(relation);
if (metadata === undefined) {
return;
}
switch (this.getVisibility(relation)) {
case 'none':
if (isVisibilityAllowed(metadata, 'must')) {
this.setVisibility(relation, 'must');
}
break;
case 'must':
{
const next = isVisibilityAllowed(metadata, 'all') ? 'all' : 'none';
this.setVisibility(relation, next);
}
break;
default:
this.setVisibility(relation, 'none');
break;
}
}
hideAll(): void {
this.relationMetadata.forEach((metadata, name) => {
if (getDefaultVisibility(metadata) === 'none') {
this.visibility.delete(name);
} else {
this.visibility.set(name, 'none');
}
});
}
resetFilter(): void {
this.visibility.clear();
}
getName({ name, simpleName }: { name: string; simpleName: string }): string {
return this.abbreviate ? simpleName : name;
}
toggleAbbrevaite(): void {
this.abbreviate = !this.abbreviate;
}
toggleScopes(): void {
this.scopes = !this.scopes;
}
setSelectedSymbol(option: RelationMetadata | undefined): void {
if (option === undefined) {
this.selectedSymbol = undefined;
return;
}
const metadata = this.relationMetadata.get(option.name);
if (metadata !== undefined) {
this.selectedSymbol = metadata;
} else {
this.selectedSymbol = undefined;
}
}
setSemantics(semantics: SemanticsSuccessResult) {
this.semantics = semantics;
this.relationMetadata.clear();
this.semantics.relations.forEach((metadata) => {
this.relationMetadata.set(metadata.name, metadata);
});
const toRemove = new Set<string>();
this.visibility.forEach((value, key) => {
if (
!this.isVisibilityAllowed(key, value) ||
this.getDefaultVisibility(key) === value
) {
toRemove.add(key);
}
});
toRemove.forEach((key) => {
this.visibility.delete(key);
});
this.setSelectedSymbol(this.selectedSymbol);
this.updateTypeHashes();
}
/**
* Maintains a list of past and current color codes to avoid flashing
* when the graph view updates.
*
* As long as the previously used colors are still in in `typeHashesMap`,
* the view will not flash while Graphviz is recomputing, because we'll
* keep emitting styles for the colors.
*/
private updateTypeHashes(): void {
this.semantics.nodes.forEach(({ typeHash }) => {
if (
typeHash !== undefined &&
typeHash.startsWith(TYPE_HASH_HEX_PREFFIX)
) {
const key = typeHash.substring(TYPE_HASH_HEX_PREFFIX.length);
this.typeHashesMap.set(key, 0);
}
});
this.hexTypeHashes = Array.from(this.typeHashesMap.keys());
this.hexTypeHashes.forEach((typeHash) => {
const age = this.typeHashesMap.get(typeHash);
if (age !== undefined && age < 10) {
this.typeHashesMap.set(typeHash, age + 1);
} else {
this.typeHashesMap.delete(typeHash);
}
});
}
get colorNodes(): boolean {
return this.editorStore.colorIdentifiers;
}
get name(): string {
return this.nameOverride ?? this.editorStore.simpleNameOrFallback;
}
}
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