bpmn-js/lib/features/modeling/BpmnFactory.js

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'use strict';
var map = require('lodash/collection/map'),
assign = require('lodash/object/assign'),
pick = require('lodash/object/pick');
function BpmnFactory(moddle) {
this._model = moddle;
}
BpmnFactory.$inject = [ 'moddle' ];
BpmnFactory.prototype._needsId = function(element) {
return element.$instanceOf('bpmn:RootElement') ||
element.$instanceOf('bpmn:FlowElement') ||
element.$instanceOf('bpmn:MessageFlow') ||
element.$instanceOf('bpmn:DataAssociation') ||
element.$instanceOf('bpmn:Artifact') ||
element.$instanceOf('bpmn:Participant') ||
element.$instanceOf('bpmn:Lane') ||
element.$instanceOf('bpmn:Process') ||
element.$instanceOf('bpmn:Collaboration') ||
element.$instanceOf('bpmndi:BPMNShape') ||
element.$instanceOf('bpmndi:BPMNEdge') ||
element.$instanceOf('bpmndi:BPMNDiagram') ||
element.$instanceOf('bpmndi:BPMNPlane');
};
BpmnFactory.prototype._ensureId = function(element) {
// generate semantic ids for elements
// bpmn:SequenceFlow -> SequenceFlow_ID
var prefix = (element.$type || '').replace(/^[^:]*:/g, '') + '_';
if (!element.id && this._needsId(element)) {
element.id = this._model.ids.nextPrefixed(prefix, element);
}
};
BpmnFactory.prototype.create = function(type, attrs) {
var element = this._model.create(type, attrs || {});
this._ensureId(element);
return element;
};
BpmnFactory.prototype.createDiLabel = function() {
return this.create('bpmndi:BPMNLabel', {
bounds: this.createDiBounds()
});
};
BpmnFactory.prototype.createDiShape = function(semantic, bounds, attrs) {
return this.create('bpmndi:BPMNShape', assign({
bpmnElement: semantic,
bounds: this.createDiBounds(bounds)
}, attrs));
};
BpmnFactory.prototype.createDiBounds = function(bounds) {
return this.create('dc:Bounds', bounds);
};
BpmnFactory.prototype.createDiWaypoints = function(waypoints) {
return map(waypoints, function(pos) {
return this.createDiWaypoint(pos);
}, this);
};
BpmnFactory.prototype.createDiWaypoint = function(point) {
return this.create('dc:Point', pick(point, [ 'x', 'y' ]));
};
BpmnFactory.prototype.createDiEdge = function(semantic, waypoints, attrs) {
return this.create('bpmndi:BPMNEdge', assign({
bpmnElement: semantic
}, attrs));
};
BpmnFactory.prototype.createDiPlane = function(semantic) {
return this.create('bpmndi:BPMNPlane', {
bpmnElement: semantic
});
};
module.exports = BpmnFactory;