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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
/**
* 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(selectorString: string) {
const selector = this.jsplumbInstance.getSelector(selectorString);
this.jsplumbInstance.draggable(selector, {
});
this.jsplumbInstance.makeTarget(selector, {
detachable: false,
isTarget: true,
maxConnections: -1,
});
this.jsplumbInstance.makeSource(selector, {
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);
},
});
}
}
|
