2019-05-14 12:51:29 +00:00
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import inherits from 'inherits';
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import CommandInterceptor from 'diagram-js/lib/command/CommandInterceptor';
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import {
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add as collectionAdd,
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remove as collectionRemove
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} from 'diagram-js/lib/util/Collections';
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import {
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getBusinessObject,
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is
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} from '../../../util/ModelUtil';
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2019-05-22 06:39:05 +00:00
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import {
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createCategoryValue
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} from './util/CategoryUtil';
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2019-05-14 12:51:29 +00:00
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/**
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* BPMN specific Group behavior
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*/
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export default function GroupBehavior(eventBus, bpmnFactory, canvas, elementRegistry) {
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CommandInterceptor.call(this, eventBus);
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/**
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* Gets process definitions
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*
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* @return {ModdleElement} definitions
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*/
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function getDefinitions() {
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var rootElement = canvas.getRootElement(),
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businessObject = getBusinessObject(rootElement);
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return businessObject.$parent;
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}
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/**
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* Removes a referenced category value for a given group shape
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*
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* @param {djs.model.Shape} shape
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*/
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function removeReferencedCategoryValue(shape) {
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var businessObject = getBusinessObject(shape),
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categoryValue = businessObject.categoryValueRef,
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category = categoryValue.$parent;
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if (!categoryValue) {
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return;
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}
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collectionRemove(category.categoryValue, categoryValue);
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// cleanup category if it is empty
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if (category && !category.categoryValue.length) {
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removeCategory(category);
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}
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}
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/**
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* Removes a given category from the definitions
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*
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* @param {ModdleElement} category
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*/
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function removeCategory(category) {
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var definitions = getDefinitions();
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collectionRemove(definitions.get('rootElements'), category);
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}
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/**
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* Returns all group element in the current registry
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*
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* @return {Array<djs.model.shape>} a list of group shapes
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*/
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function getGroupElements() {
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return elementRegistry.filter(function(e) {
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return is(e, 'bpmn:Group');
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});
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}
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/**
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* Returns true if given categoryValue is referenced in one of the given elements
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*
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* @param {Array<djs.model.shape>} elements
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* @param {ModdleElement} categoryValue
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* @return {Boolean}
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*/
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function isReferenced(elements, categoryValue) {
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return elements.some(function(e) {
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var businessObject = getBusinessObject(e);
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return businessObject.categoryValueRef
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&& businessObject.categoryValueRef === categoryValue;
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});
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}
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/**
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* remove referenced category + value when group was deleted
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*/
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this.executed('shape.delete', function(event) {
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var context = event.context,
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shape = context.shape;
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if (is(shape, 'bpmn:Group')) {
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var businessObject = getBusinessObject(shape),
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categoryValueRef = businessObject.categoryValueRef,
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groupElements = getGroupElements();
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if (!isReferenced(groupElements, categoryValueRef)) {
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removeReferencedCategoryValue(shape);
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}
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}
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});
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/**
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* re-attach removed category
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*/
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this.reverted('shape.delete', function(event) {
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var context = event.context,
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shape = context.shape;
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if (is(shape, 'bpmn:Group')) {
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var businessObject = getBusinessObject(shape),
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categoryValueRef = businessObject.categoryValueRef,
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definitions = getDefinitions(),
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category = categoryValueRef ? categoryValueRef.$parent : null;
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collectionAdd(category.get('categoryValue'), categoryValueRef);
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collectionAdd(definitions.get('rootElements'), category);
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}
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});
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/**
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* create new category + value when group was created
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*/
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this.execute('shape.create', function(event) {
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var context = event.context,
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shape = context.shape,
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businessObject = getBusinessObject(shape);
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if (is(businessObject, 'bpmn:Group') && !businessObject.categoryValueRef) {
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2019-05-22 06:39:05 +00:00
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var definitions = getDefinitions(),
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categoryValue = createCategoryValue(definitions, bpmnFactory);
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2019-05-14 12:51:29 +00:00
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// link the reference to the Group
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businessObject.categoryValueRef = categoryValue;
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}
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});
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this.revert('shape.create', function(event) {
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var context = event.context,
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shape = context.shape;
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if (is(shape, 'bpmn:Group')) {
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removeReferencedCategoryValue(shape);
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delete getBusinessObject(shape).categoryValueRef;
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}
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});
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}
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GroupBehavior.$inject = [
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'eventBus',
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'bpmnFactory',
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'canvas',
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'elementRegistry'
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];
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inherits(GroupBehavior, CommandInterceptor);
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