bpmn-js/lib/features/modeling/behavior/DetachEventBehavior.js

94 lines
2.3 KiB
JavaScript

import inherits from 'inherits';
import CommandInterceptor from 'diagram-js/lib/command/CommandInterceptor';
import {
getBusinessObject,
is
} from '../../../util/ModelUtil';
import { isLabel } from '../../../util/LabelUtil';
var LOW_PRIORITY = 500;
/**
* Replace boundary event with intermediate event when creating or moving results in detached event.
*/
export default function DetachEventBehavior(bpmnReplace, injector) {
injector.invoke(CommandInterceptor, this);
this._bpmnReplace = bpmnReplace;
var self = this;
this.postExecuted('elements.create', LOW_PRIORITY, function(context) {
var elements = context.elements;
elements.filter(function(shape) {
var host = shape.host;
return shouldReplace(shape, host);
}).map(function(shape) {
return elements.indexOf(shape);
}).forEach(function(index) {
context.elements[ index ] = self.replaceShape(elements[ index ]);
});
}, true);
this.preExecute('elements.move', LOW_PRIORITY, function(context) {
var shapes = context.shapes,
newHost = context.newHost;
shapes.forEach(function(shape, index) {
var host = shape.host;
if (shouldReplace(shape, includes(shapes, host) ? host : newHost)) {
shapes[ index ] = self.replaceShape(shape);
}
});
}, true);
}
DetachEventBehavior.$inject = [
'bpmnReplace',
'injector'
];
inherits(DetachEventBehavior, CommandInterceptor);
DetachEventBehavior.prototype.replaceShape = function(shape) {
var eventDefinition = getEventDefinition(shape),
intermediateEvent;
if (eventDefinition) {
intermediateEvent = {
type: 'bpmn:IntermediateCatchEvent',
eventDefinitionType: eventDefinition.$type
};
} else {
intermediateEvent = {
type: 'bpmn:IntermediateThrowEvent'
};
}
return this._bpmnReplace.replaceElement(shape, intermediateEvent, { layoutConnection: false });
};
// helpers //////////
function getEventDefinition(element) {
var businessObject = getBusinessObject(element),
eventDefinitions = businessObject.eventDefinitions;
return eventDefinitions && eventDefinitions[0];
}
function shouldReplace(shape, host) {
return !isLabel(shape) && is(shape, 'bpmn:BoundaryEvent') && !host;
}
function includes(array, item) {
return array.indexOf(item) !== -1;
}