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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 * as jsp from 'jsplumb';
import { WorkflowProcessService } from "./workflow-process.service";
import { BroadcastService } from "./broadcast.service";
import { Subscription } from 'rxjs/Subscription';
import { WorkflowNode } from "../model/workflow/workflow-node";
/**
* JsPlumbService
* provides all of the operations about jsplumb plugin.
*/
@Injectable()
export class JsPlumbService {
public jsplumbInstance;
public subscriptionMap = new Map<string, Subscription>();
constructor(private processService: WorkflowProcessService, private broadcastService: BroadcastService) {
this.initJsPlumbInstance();
}
public initJsPlumbInstance() {
this.jsplumbInstance = jsp.jsPlumb.getInstance({
Container: 'canvas'
});
this.jsplumbInstance.importDefaults({
Anchor: ['Top', 'RightMiddle', 'LeftMiddle', 'Bottom'],
Connector: [
'Flowchart',
{ cornerRadius: 0, stub: 0, gap: 3 },
],
ConnectionOverlays: [
[
'Arrow',
{ direction: 1, foldback: 1, location: 1, width: 10, length: 10 },
],
['Label', { label: '', id: 'label', cssClass: 'aLabel' }],
],
Endpoint: 'Blank',
PaintStyle: {
strokeWidth: 4,
stroke: 'black',
},
HoverPaintStyle: {
strokeWidth: 4,
stroke: 'blue',
},
});
// add connection to model data while a new connection is build
this.jsplumbInstance.bind('connection', info => {
this.processService.addSequenceFlow(info.connection.sourceId, info.connection.targetId);
this.subscribe4Connection(info.connection);
info.connection.bind('click', connection => {
const sequenceFlow = this.processService.getSequenceFlow(connection.sourceId, connection.targetId);
this.broadcastService.broadcast(this.broadcastService.currentSequenceFlow, sequenceFlow);
this.broadcastService.broadcast(this.broadcastService.currentType, 'SequenceFlow');
});
info.connection.bind('dblclick', connection => {
const sequenceFlow = this.processService.getSequenceFlow(connection.sourceId, connection.targetId);
this.broadcastService.broadcast(this.broadcastService.sequenceFlow, sequenceFlow);
this.broadcastService.broadcast(this.broadcastService.showSequenceFlow, true);
});
});
}
private subscribe4Connection(connection: any) {
const pre = connection.sourceId + connection.targetId;
let sequenceFlowSubscription = this.subscriptionMap.get(pre + 'sequenceFlowSubscription');
if (sequenceFlowSubscription && !sequenceFlowSubscription.closed) {
sequenceFlowSubscription.unsubscribe();
}
sequenceFlowSubscription = this.broadcastService.currentSequenceFlow$.subscribe(currentSequenceFlow => {
if (currentSequenceFlow.sourceRef === connection.sourceId
&& currentSequenceFlow.targetRef === connection.targetId) {
connection.setPaintStyle({ stroke: 'red' });
} else {
connection.setPaintStyle({ stroke: 'black' });
}
});
this.subscriptionMap.set(pre + 'sequenceFlowSubscription', sequenceFlowSubscription);
let typeSubscription = this.subscriptionMap.get(pre + 'typeSubscription');
if (typeSubscription && !typeSubscription.closed) {
typeSubscription.unsubscribe();
}
typeSubscription = this.broadcastService.currentType$.subscribe(type => {
if (type === 'WorkflowNode') {
connection.setPaintStyle({ stroke: 'black' });
}
});
this.subscriptionMap.set(pre + 'typeSubscription', typeSubscription);
}
private unsubscription4Connection(connectionSelection: any) {
connectionSelection.each(connection => {
const pre = connection.sourceId + connection.targetId;
this.subscriptionMap.get(pre + 'sequenceFlowSubscription').unsubscribe();
this.subscriptionMap.get(pre + 'typeSubscription').unsubscribe();
});
}
public initNode() {
this.processService.getProcess().forEach(node => {
this.jsplumbInstance.draggable(node.id, {
stop: event => {
node.position.left = event.pos[0];
node.position.top = event.pos[1];
},
});
this.jsplumbInstance.makeTarget(node.id, {
detachable: false,
isTarget: true,
maxConnections: -1,
});
this.jsplumbInstance.makeSource(node.id, {
filter: '.anchor, .anchor *',
detachable: false,
isSource: true,
maxConnections: -1,
});
});
}
public connectNodes() {
const nodes: WorkflowNode[] = this.processService.getProcess();
nodes.forEach(node => this.connect4OneNode(node));
}
public connect4OneNode(node: WorkflowNode) {
node.sequenceFlows.forEach(sequenceFlow => {
const connection = this.jsplumbInstance.connect({
source: sequenceFlow.sourceRef,
target: sequenceFlow.targetRef,
});
if (sequenceFlow.condition) {
connection.setLabel(sequenceFlow.condition);
}
});
}
public setLabel(sourceId: string, targetId: string, label: string) {
const sourceNode = this.processService.getNodeById(sourceId);
const connections = this.jsplumbInstance.select({ source: sourceId, target: targetId });
connections.setLabel(label);
}
public deleteConnect(sourceId: string, targetId: string) {
const sourceNode = this.processService.getNodeById(sourceId);
const connectionSelection = this.jsplumbInstance.select({ source: sourceId, target: targetId });
this.unsubscription4Connection(connectionSelection);
connectionSelection.delete();
}
public remove(nodeId: string) {
// unsubscription4Connection
const connectionsAsSource = this.jsplumbInstance.select({ source: nodeId });
this.unsubscription4Connection(connectionsAsSource);
const connectionsAsTarget = this.jsplumbInstance.select({ target: nodeId });
this.unsubscription4Connection(connectionsAsTarget);
this.jsplumbInstance.remove(nodeId);
}
public buttonDraggable() {
const selector = this.jsplumbInstance.getSelector('.toolbar .item');
this.jsplumbInstance.draggable(selector,
{
scope: 'btn',
clone: true,
});
}
public buttonDroppable() {
const selector = this.jsplumbInstance.getSelector('.canvas');
this.jsplumbInstance.droppable(selector, {
scope: 'btn',
drop: event => {
const el = this.jsplumbInstance.getSelector(event.drag.el);
const type = el.attributes.nodeType.value;
// Mouse position minus drop canvas start position and minus icon half size
const left = event.e.clientX - 220 - (event.e.offsetX / 2);
const top = event.e.clientY - 70 - (event.e.offsetY / 2);
this.processService.addNode(type, type, top, left);
},
});
}
}
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