105 lines
3.1 KiB
JavaScript
105 lines
3.1 KiB
JavaScript
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'use strict';
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var forEach = require('lodash/collection/forEach'),
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filter = require('lodash/collection/filter'),
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isArray = require('lodash/lang/isArray'),
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contains = require('lodash/collection/contains'),
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map = require('lodash/collection/map');
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/**
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* A bpmn properties cloning interface
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*
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* @param {Moddle} moddle
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*/
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function BpmnClone(moddle) {
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this._moddle = moddle;
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}
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module.exports = BpmnClone;
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BpmnClone.$inject = [ 'moddle' ];
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BpmnClone.prototype.clone = function(oldElement, newElement, properties) {
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var moddle = this._moddle;
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forEach(properties, function(propName) {
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var oldElementProp = oldElement.$model.properties.get(oldElement, propName),
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newElementProp = newElement.$model.properties.get(newElement, propName);
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if (newElementProp === oldElementProp) {
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return;
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}
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// if it's not an 'extensionElement' or 'documentation' just set the property
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if (!(contains([ 'bpmn:extensionElements', 'bpmn:documentation' ], propName))) {
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newElement.$model.properties.set(newElement, propName, oldElementProp);
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return;
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}
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if (propName === 'bpmn:extensionElements') {
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newElement.$model.properties.set(newElement, propName, moddle.create('bpmn:ExtensionElements', { values: [] }));
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forEach(oldElementProp.values, function(extElement) {
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var extProp = moddle.registry.typeMap[extElement.$type];
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if (extProp.meta.allowedIn && extProp.meta.allowedIn.indexOf(newElement.$type) !== -1) {
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var newProp = this._deepClone(extElement);
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newElement.extensionElements.values.push(newProp);
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}
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}, this);
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} else if (propName === 'bpmn:documentation') {
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newElement.documentation = [];
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forEach(oldElementProp, function(extElement) {
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var newProp = this._deepClone(extElement);
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newElement.documentation.push(newProp);
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}, this);
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}
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}, this);
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return newElement;
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};
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BpmnClone.prototype._deepClone = function _deepClone(extElement) {
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var newProp = extElement.$model.create(extElement.$type),
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properties;
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// figure out which properties we want to assign to the newElement
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// we're interested in enumerable ones (todo: double check this)
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if (isArray(extElement)) {
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properties = map(extElement, function(item) {
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return item.$type;
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});
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} else {
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properties = filter(Object.keys(extElement), function(prop) { return prop !== '$type'; });
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}
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forEach(properties, function(propName) {
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// check if the extElement has this property defined
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if (extElement[propName] !== undefined && (extElement[propName].$type || isArray(extElement[propName]))) {
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if (isArray(extElement[propName])) {
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newProp[propName] = [];
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forEach(extElement[propName], function(property) {
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newProp[propName].push(this._deepClone(property));
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}, this);
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} else if (extElement[propName].$type) {
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newProp[propName] = this._deepClone(extElement[propName]);
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}
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} else {
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// just assign directly if it's a value
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newProp[propName] = extElement[propName];
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}
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}, this);
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return newProp;
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};
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