125 lines
3.1 KiB
JavaScript
125 lines
3.1 KiB
JavaScript
'use strict';
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var reduce = require('lodash/object/transform'),
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keys = require('lodash/object/keys'),
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forEach = require('lodash/collection/forEach');
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var DEFAULT_FLOW = 'default',
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NAME = 'name',
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ID = 'id';
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/**
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* A handler that implements a BPMN 2.0 property update.
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*
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* This should be used to set simple properties on elements with
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* an underlying BPMN business object.
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*
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* Use respective diagram-js provided handlers if you would
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* like to perform automated modeling.
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*/
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function UpdatePropertiesHandler(elementRegistry) {
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this._elementRegistry = elementRegistry;
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}
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UpdatePropertiesHandler.$inject = [ 'elementRegistry' ];
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module.exports = UpdatePropertiesHandler;
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function getProperties(businessObject, propertyNames) {
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return reduce(propertyNames, function(result, key) {
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result[key] = businessObject.get(key);
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return result;
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}, {});
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}
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function setProperties(businessObject, properties) {
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forEach(properties, function(value, key) {
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businessObject.set(key, value);
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});
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}
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////// api /////////////////////////////////////////////
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/**
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* Updates a BPMN element with a list of new properties
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*
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* @param {Object} context
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* @param {djs.model.Base} context.element the element to update
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* @param {Object} context.properties a list of properties to set on the element's
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* businessObject (the BPMN model element)
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*
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* @return {Array<djs.mode.Base>} the updated element
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*/
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UpdatePropertiesHandler.prototype.execute = function(context) {
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var element = context.element,
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changed = [ element ];
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if (!element) {
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throw new Error('element required');
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}
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var elementRegistry = this._elementRegistry;
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var businessObject = element.businessObject,
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properties = context.properties,
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oldProperties = context.oldProperties || getProperties(businessObject, keys(properties));
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if (ID in properties) {
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elementRegistry.updateId(element, properties[ID]);
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}
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// correctly indicate visual changes on default flow updates
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if (DEFAULT_FLOW in properties) {
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if (properties[DEFAULT_FLOW]) {
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changed.push(elementRegistry.get(properties[DEFAULT_FLOW].id));
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}
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if (businessObject[DEFAULT_FLOW]) {
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changed.push(elementRegistry.get(businessObject[DEFAULT_FLOW].id));
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}
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}
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if (NAME in properties && element.label) {
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changed.push(element.label);
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}
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// update properties
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setProperties(businessObject, properties);
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// store old values
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context.oldProperties = oldProperties;
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context.changed = changed;
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// indicate changed on objects affected by the update
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return changed;
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};
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/**
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* Reverts the update on a BPMN elements properties.
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*
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* @param {Object} context
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*
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* @return {djs.mode.Base} the updated element
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*/
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UpdatePropertiesHandler.prototype.revert = function(context) {
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var element = context.element,
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oldProperties = context.oldProperties,
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businessObject = element.businessObject,
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elementRegistry = this._elementRegistry;
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// update properties
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setProperties(businessObject, oldProperties);
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if (ID in oldProperties) {
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elementRegistry.updateId(element, oldProperties[ID]);
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}
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return context.changed;
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}; |