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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-node";
/**
* WorkflowService
* provides all of the operations about workflow operations.
*/
@Injectable()
export class WorkflowService {
public nodes: WorkflowNode[] = [];
public getNodes(): WorkflowNode[] {
return this.nodes;
}
public addNode(name: string, type: string, top: number, left: number) {
this.nodes.push(new WorkflowNode(this.createId(), name, type, top, left));
}
public deleteNode(nodeId: string): WorkflowNode {
// delete current node
const index = this.nodes.findIndex(node => node.id === nodeId);
if (index !== -1) {
const node = this.nodes.splice(index, 1)[0];
return node;
}
return undefined;
}
public getNode(sourceId: string): WorkflowNode {
return this.nodes.find(node => node.id === sourceId);
}
private createId() {
const idSet = new Set();
this.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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