bpmn-js/lib/features/replace/BpmnReplace.js

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'use strict';
var pick = require('lodash/object/pick'),
assign = require('lodash/object/assign'),
intersection = require('lodash/array/intersection'),
filter = require('lodash/collection/filter'),
has = require('lodash/object/has');
var is = require('../../util/ModelUtil').is,
isExpanded = require('../../util/DiUtil').isExpanded,
isEventSubProcess = require('../../util/DiUtil').isEventSubProcess,
ModelCloneUtils = require('../../util/model/ModelCloneUtils'),
getProperties = ModelCloneUtils.getProperties;
var IGNORED_PROPERTIES = ModelCloneUtils.IGNORED_PROPERTIES;
var ModelCloneHelper = require('../../util/model/ModelCloneHelper');
var CUSTOM_PROPERTIES = [
'cancelActivity',
'instantiate',
'eventGatewayType',
'triggeredByEvent',
'isInterrupting'
];
function toggeling(element, target) {
var oldCollapsed = has(element, 'collapsed') ?
element.collapsed : !isExpanded(element);
var targetCollapsed;
if (has(target, 'collapsed') || has(target, 'isExpanded')) {
// property is explicitly set so use it
targetCollapsed = has(target, 'collapsed') ?
target.collapsed : !target.isExpanded;
} else {
// keep old state
targetCollapsed = oldCollapsed;
}
if (oldCollapsed !== targetCollapsed) {
element.collapsed = oldCollapsed;
return true;
}
return false;
}
/**
* This module takes care of replacing BPMN elements
*/
function BpmnReplace(bpmnFactory, replace, selection, modeling, eventBus) {
var helper = new ModelCloneHelper(eventBus);
/**
* Prepares a new business object for the replacement element
* and triggers the replace operation.
*
* @param {djs.model.Base} element
* @param {Object} target
* @param {Object} [hints]
*
* @return {djs.model.Base} the newly created element
*/
function replaceElement(element, target, hints) {
hints = hints || {};
var type = target.type,
oldBusinessObject = element.businessObject;
if (is(oldBusinessObject, 'bpmn:SubProcess')) {
if (type === 'bpmn:SubProcess') {
if (toggeling(element, target)) {
// expanding or collapsing process
modeling.toggleCollapse(element);
return element;
}
}
}
var newBusinessObject = bpmnFactory.create(type);
var newElement = {
type: type,
businessObject: newBusinessObject
};
var elementProps = getProperties(oldBusinessObject.$descriptor),
newElementProps = getProperties(newBusinessObject.$descriptor, true),
properties = intersection(elementProps, newElementProps);
// initialize special properties defined in target definition
assign(newBusinessObject, pick(target, CUSTOM_PROPERTIES));
properties = filter(properties, function(property) {
var propName = property.replace(/bpmn:/, '');
// so the applied properties from 'target' don't get lost
if (newBusinessObject[property] !== undefined) {
return false;
}
// retain loop characteristics if the target element is not an event sub process
if (propName === 'loopCharacteristics') {
return !isEventSubProcess(newBusinessObject);
}
if ((propName === 'processRef' && target.isExpanded === false) ||
propName === 'triggeredByEvent' ||
propName === 'eventDefinitions') {
return false;
}
return IGNORED_PROPERTIES.indexOf(propName) === -1;
});
newBusinessObject = helper.clone(oldBusinessObject, newBusinessObject, properties);
// initialize custom BPMN extensions
if (target.eventDefinitionType) {
newElement.eventDefinitionType = target.eventDefinitionType;
}
if (is(oldBusinessObject, 'bpmn:Activity')) {
if (is(oldBusinessObject, 'bpmn:SubProcess')) {
// no toggeling, so keep old state
newElement.isExpanded = isExpanded(oldBusinessObject);
}
// else if property is explicitly set, use it
else if (has(target, 'isExpanded')) {
newElement.isExpanded = target.isExpanded;
}
// TODO: need also to respect min/max Size
// copy size, from an expanded subprocess to an expanded alternative subprocess
// except bpmn:Task, because Task is always expanded
if ((isExpanded(oldBusinessObject) && !is(oldBusinessObject, 'bpmn:Task')) && newElement.isExpanded) {
newElement.width = element.width;
newElement.height = element.height;
}
}
// transform collapsed/expanded pools
if (is(oldBusinessObject, 'bpmn:Participant')) {
// create expanded pool
if (target.isExpanded === true) {
newBusinessObject.processRef = bpmnFactory.create('bpmn:Process');
} else {
// remove children when transforming to collapsed pool
hints.moveChildren = false;
}
// apply same size
newElement.width = element.width;
newElement.height = element.height;
}
newBusinessObject.name = oldBusinessObject.name;
// retain default flow's reference between inclusive <-> exclusive gateways and activities
if ((is(oldBusinessObject, 'bpmn:ExclusiveGateway') || is(oldBusinessObject, 'bpmn:InclusiveGateway') ||
is(oldBusinessObject, 'bpmn:Activity')) &&
(is(newBusinessObject, 'bpmn:ExclusiveGateway') || is(newBusinessObject, 'bpmn:InclusiveGateway') ||
is(newBusinessObject, 'bpmn:Activity')))
{
newBusinessObject.default = oldBusinessObject.default;
}
if ('fill' in oldBusinessObject.di || 'stroke' in oldBusinessObject.di) {
assign(newElement, { colors: pick(oldBusinessObject.di, [ 'fill', 'stroke' ]) });
}
newElement = replace.replaceElement(element, newElement, hints);
if (hints.select !== false) {
selection.select(newElement);
}
return newElement;
}
this.replaceElement = replaceElement;
}
BpmnReplace.$inject = [ 'bpmnFactory', 'replace', 'selection', 'modeling', 'eventBus' ];
module.exports = BpmnReplace;