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/**
* Copyright (c) 2017 ZTE Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and the Apache License 2.0 which both accompany this distribution,
* and are available at http://www.eclipse.org/legal/epl-v10.html
* and http://www.apache.org/licenses/LICENSE-2.0
*
* Contributors:
* ZTE - initial API and implementation and/or initial documentation
*/
import { Injectable } from '@angular/core';
import { WorkflowNode } from "../model/workflow/workflow-node";
import { DataAccessService } from "./data-access/data-access.service";
import { Observable } from "rxjs/Observable";
import { Workflow } from "../model/workflow/workflow";
import { Position } from "../model/workflow/position";
import { NodeType } from "../model/workflow/node-type.enum";
import { StartEvent } from "../model/workflow/start-event";
import { SequenceFlow } from "../model/workflow/sequence-flow";
/**
* WorkflowService
* provides all of the operations about workflow operations.
*/
@Injectable()
export class WorkflowService {
public workflow: Workflow;
constructor(private dataAccessService: DataAccessService) {
}
public save(): Observable<boolean> {
console.log(this.workflow);
return this.dataAccessService.catalogService.saveWorkflow(this.workflow);
}
public addNode(name: string, type: string, top: number, left: number): WorkflowNode {
let node: WorkflowNode;
switch (type) {
case NodeType[NodeType.startEvent]:
node = new StartEvent(this.createId(), name, type, new Position(top, left), []);
break;
default:
node = new WorkflowNode(this.createId(), name, type, new Position(top, left), []);
break;
}
this.workflow.nodes.push(node);
return node;
}
public deleteNode(nodeId: string): WorkflowNode {
// delete related connections
this.workflow.nodes.forEach(node => this.deleteSequenceFlow(node.id, nodeId));
// delete current node
const index = this.workflow.nodes.findIndex(node => node.id === nodeId);
if (index !== -1) {
const node = this.workflow.nodes.splice(index, 1)[0];
node.sequenceFlows = [];
return node;
}
return undefined;
}
public addSequenceFlow(sourceId: string, targetId: string) {
const node = this.getNodeById(sourceId);
if (node) {
const index = node.sequenceFlows.findIndex(sequenceFlow => sequenceFlow.targetRef === targetId);
if (index === -1) {
node.sequenceFlows.push(new SequenceFlow(sourceId, targetId));
}
}
}
public deleteSequenceFlow(sourceId: string, targetId: string) {
const node = this.getNodeById(sourceId);
if (node) {
const index = node.sequenceFlows.findIndex(sequenceFlow => sequenceFlow.targetRef === targetId);
if (index !== -1) {
node.sequenceFlows.splice(index, 1);
}
}
}
public getNodeById(sourceId: string): WorkflowNode {
return this.workflow.nodes.find(node => node.id === sourceId);
}
private createId() {
const idSet = new Set();
this.workflow.nodes.forEach(node => idSet.add(node.id));
for (let i = 0; i < idSet.size; i++) {
if (!idSet.has('node' + i)) {
return 'node' + i;
}
}
return 'node' + idSet.size;
}
}
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