96 lines
2.4 KiB
JavaScript
96 lines
2.4 KiB
JavaScript
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'use strict';
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var _ = require('lodash');
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var DEFAULT_FLOW = 'default',
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NAME = 'name';
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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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////// 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 || _.pick(businessObject, _.keys(properties));
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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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_.assign(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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businessObject = element.businessObject;
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_.assign(businessObject, context.oldProperties);
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return context.changed;
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};
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