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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 | 130x 5x 5x 5x 5x 5x 4x 4x 4x 4x 12x 8x 4x 4x 4x 4x 4x 2x 2x 2x 2x 2x 2x 2x 2x 6x 6x 2x 6x 6x 4x 4x 6x 6x 6x 6x 6x 6x 462x 156x 2x 125x | import { Component, ViewChild, ElementRef, OnInit, Input, inject } from '@angular/core';
import { PetriNetwork, Place, Transition, PetriNode, PetriNetworkInterface } from '../../models/petri';
import { Canvas } from '../../models/canvas';
import { ActivatedRoute } from '@angular/router';
import { Drawer } from 'primeng/drawer';
import { ErrorComponent } from '../error/error.component';
import { HttpErrorResponse } from '@angular/common/http';
import { Device } from '../../models/devices';
import { TwinpadApiService } from '../../services/twinpad-api.service';
import { EmptyPlaceholderComponent } from '../empty-placeholder/empty-placeholder.component';
import { environment } from '../../../environments/environment';
@Component({
selector: 'app-petri',
imports: [Drawer, ErrorComponent, EmptyPlaceholderComponent],
templateUrl: './petri.component.html',
styleUrl: './petri.component.scss'
})
export class PetriComponent implements OnInit {
private twinpadApiService = inject(TwinpadApiService);
private route = inject(ActivatedRoute);
@Input() deviceId: string;
@ViewChild('petriCanvas', { static: true }) petriCanvas!: ElementRef<HTMLCanvasElement>;
petriNetwork: PetriNetwork;
private context!: CanvasRenderingContext2D;
canvas: Canvas;
device_id: string;
displayInfo: boolean = false;
displayType: string = "";
displayedNode: PetriNode;
error: HttpErrorResponse;
hideCanvas: boolean = false;
ngOnInit() {
this.petriCanvas.nativeElement.addEventListener('wheel', this.preventScroll, { passive: false });
this.context = this.petriCanvas.nativeElement.getContext('2d')!;
this.device_id = this.route.snapshot.params['device_id'] || this.deviceId;
this.twinpadApiService.devicesBehaviorSubject$.subscribe({
next: devices => {
const device = devices.find(device => device.device_id === this.device_id);
if (device !== undefined) {
this.setupPetri(device);
}
else {
this.twinpadApiService.getDevice(this.device_id).subscribe({
next: device => {
this.setupPetri(device);
},
error: error => {
this.error = error;
this.hideCanvas = true;
}
});
}
}
});
}
setupPetri(device: Device) {
if (this.petriNetwork === undefined) {
Iif (device.petri_network === undefined || device.petri_network === null || PetriComponent.isPetriEmpty(device.petri_network)) {
this.hideCanvas = true;
return;
}
this.hideCanvas = false;
this.petriNetwork = PetriNetwork.deserialize(device['petri_network']);
this.canvas = new Canvas(this.context, this.petriNetwork);
Eif (environment.production != true){
window.petriNetwork = this.petriNetwork;
window.canvas = this.canvas;
}
this.petriNetwork.selectedPlace.subscribe({
next: (place) => {
Eif (place !== null) {
this.showPlaceInfo(place);
}
}
});
this.petriNetwork.selectedTransition.subscribe({
next: (transition) => {
Eif (transition !== null) {
this.showTransitionInfo(transition);
}
}
});
}
this.petriNetwork.tokens = device.tokens;
this.canvas.draw();
}
showPlaceInfo(place: Place) {
this.displayInfo = true;
this.displayType = "place";
this.displayedNode = place;
}
showTransitionInfo(transition: Transition) {
this.displayInfo = true;
this.displayType = "transition";
this.displayedNode = transition;
}
asPlace(node: PetriNode): Place {
return node as Place;
}
asTransition(node: PetriNode): Transition {
return node as Transition;
}
preventScroll(event: WheelEvent) {
event.preventDefault();
}
static isPetriEmpty(petriNet: PetriNetworkInterface) {
return (petriNet.input_arcs?.length ?? 0) === 0 &&
(petriNet.output_arcs?.length ?? 0) === 0 &&
(petriNet.places?.length ?? 0) === 0 &&
(petriNet.transitions?.length ?? 0) === 0;
}
}
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