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

78 lines
1.9 KiB
JavaScript

'use strict';
var assign = require('lodash/object/assign'),
inherits = require('inherits');
var LabelUtil = require('../../util/LabelUtil'),
is = require('../../util/ModelUtil').is;
var hasExternalLabel = LabelUtil.hasExternalLabel,
getExternalLabelMid = LabelUtil.getExternalLabelMid;
var CommandInterceptor = require('diagram-js/lib/command/CommandInterceptor');
function LabelSupport(eventBus, modeling, bpmnFactory) {
CommandInterceptor.call(this, eventBus);
// create external labels on shape creation
this.postExecute([ 'shape.create', 'connection.create' ], function(e) {
var context = e.context;
var element = context.shape || context.connection,
businessObject = element.businessObject;
var position;
if (hasExternalLabel(businessObject)) {
position = getExternalLabelMid(element);
modeling.createLabel(element, position, {
id: businessObject.id + '_label',
businessObject: businessObject
});
}
});
// update di information on label movement and creation
this.executed([ 'label.create', 'shape.moved' ], function(e) {
var element = e.context.shape,
businessObject,
di;
// we want to trigger on real labels only
if (!element.labelTarget) {
return;
}
// we want to trigger on BPMN elements only
if (!is(element.labelTarget || element, 'bpmn:BaseElement')) {
return;
}
businessObject = element.businessObject,
di = businessObject.di;
if (!di.label) {
di.label = bpmnFactory.create('bpmndi:BPMNLabel', {
bounds: bpmnFactory.create('dc:Bounds')
});
}
assign(di.label.bounds, {
x: element.x,
y: element.y,
width: element.width,
height: element.height
});
});
}
inherits(LabelSupport, CommandInterceptor);
LabelSupport.$inject = [ 'eventBus', 'modeling', 'bpmnFactory' ];
module.exports = LabelSupport;