469 lines
11 KiB
JavaScript
469 lines
11 KiB
JavaScript
'use strict';
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var assign = require('lodash/object/assign'),
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forEach = require('lodash/collection/forEach'),
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inherits = require('inherits');
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var Collections = require('diagram-js/lib/util/Collections'),
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Model = require('diagram-js/lib/model');
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var getBusinessObject = require('../../util/ModelUtil').getBusinessObject,
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is = require('../../util/ModelUtil').is;
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var CommandInterceptor = require('diagram-js/lib/command/CommandInterceptor');
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/**
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* A handler responsible for updating the underlying BPMN 2.0 XML + DI
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* once changes on the diagram happen
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*/
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function BpmnUpdater(eventBus, bpmnFactory, connectionDocking) {
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CommandInterceptor.call(this, eventBus);
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this._bpmnFactory = bpmnFactory;
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var self = this;
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////// connection cropping /////////////////////////
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// crop connection ends during create/update
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function cropConnection(e) {
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var context = e.context,
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connection;
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if (!context.cropped) {
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connection = context.connection;
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connection.waypoints = connectionDocking.getCroppedWaypoints(connection);
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context.cropped = true;
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}
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}
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this.executed([
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'connection.layout',
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'connection.create',
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'connection.reconnectEnd',
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'connection.reconnectStart'
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], cropConnection);
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this.reverted([ 'connection.layout' ], function(e) {
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delete e.context.cropped;
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});
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////// BPMN + DI update /////////////////////////
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// update parent
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function updateParent(e) {
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var context = e.context;
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self.updateParent(context.shape || context.connection, context.oldParent);
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}
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function reverseUpdateParent(e) {
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var context = e.context;
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var element = context.shape || context.connection,
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// oldParent is the (old) new parent, because we are undoing
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oldParent = context.parent || context.newParent;
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self.updateParent(element, oldParent);
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}
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this.executed([ 'shape.move',
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'shape.create',
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'shape.delete',
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'connection.create',
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'connection.move',
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'connection.delete' ], updateParent);
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this.reverted([ 'shape.move',
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'shape.create',
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'shape.delete',
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'connection.create',
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'connection.move',
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'connection.delete' ], reverseUpdateParent);
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/*
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* ## Updating Parent
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*
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* When morphing a Process into a Collaboration or vice-versa,
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* make sure that both the *semantic* and *di* parent of each element
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* is updated.
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*
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*/
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function updateRoot(event) {
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var context = event.context,
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oldRoot = context.oldRoot,
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children = oldRoot.children;
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forEach(children, function(child) {
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self.updateParent(child);
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});
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}
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this.executed([ 'canvas.updateRoot' ], updateRoot);
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this.reverted([ 'canvas.updateRoot' ], updateRoot);
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// update bounds
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function updateBounds(e) {
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self.updateBounds(e.context.shape);
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}
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this.executed([ 'shape.move', 'shape.create', 'shape.resize' ], updateBounds);
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this.reverted([ 'shape.move', 'shape.create', 'shape.resize' ], updateBounds);
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// attach / detach connection
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function updateConnection(e) {
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self.updateConnection(e.context.connection);
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}
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this.executed([
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'connection.create',
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'connection.move',
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'connection.delete',
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'connection.reconnectEnd',
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'connection.reconnectStart'
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], updateConnection);
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this.reverted([
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'connection.create',
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'connection.move',
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'connection.delete',
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'connection.reconnectEnd',
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'connection.reconnectStart'
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], updateConnection);
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// update waypoints
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function updateConnectionWaypoints(e) {
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self.updateConnectionWaypoints(e.context.connection);
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}
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this.executed([
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'connection.layout',
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'connection.move',
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'connection.updateWaypoints',
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'connection.reconnectEnd',
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'connection.reconnectStart'
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], updateConnectionWaypoints);
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this.reverted([
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'connection.layout',
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'connection.move',
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'connection.updateWaypoints',
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'connection.reconnectEnd',
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'connection.reconnectStart'
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], updateConnectionWaypoints);
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// update attachments
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function updateAttachment(e) {
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self.updateAttachment(e.context);
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}
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this.executed([ 'element.updateAttachment' ], updateAttachment);
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this.reverted([ 'element.updateAttachment' ], updateAttachment);
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}
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inherits(BpmnUpdater, CommandInterceptor);
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module.exports = BpmnUpdater;
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BpmnUpdater.$inject = [ 'eventBus', 'bpmnFactory', 'connectionDocking' ];
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/////// implementation //////////////////////////////////
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BpmnUpdater.prototype.updateAttachment = function(context) {
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var shape = context.shape,
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businessObject = shape.businessObject,
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host = shape.host;
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businessObject.attachedToRef = host && host.businessObject;
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};
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BpmnUpdater.prototype.updateParent = function(element, oldParent) {
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// do not update BPMN 2.0 label parent
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if (element instanceof Model.Label) {
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return;
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}
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var parentShape = element.parent;
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var businessObject = element.businessObject,
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parentBusinessObject = parentShape && parentShape.businessObject,
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parentDi = parentBusinessObject && parentBusinessObject.di;
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if (is(element, 'bpmn:FlowNode')) {
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this.updateFlowNodeRefs(businessObject, parentBusinessObject, oldParent && oldParent.businessObject);
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}
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this.updateSemanticParent(businessObject, parentBusinessObject);
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this.updateDiParent(businessObject.di, parentDi);
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};
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BpmnUpdater.prototype.updateBounds = function(shape) {
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var di = shape.businessObject.di;
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var bounds = (shape instanceof Model.Label) ? this._getLabel(di).bounds : di.bounds;
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assign(bounds, {
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x: shape.x,
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y: shape.y,
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width: shape.width,
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height: shape.height
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});
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};
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BpmnUpdater.prototype.updateFlowNodeRefs = function(businessObject, newContainment, oldContainment) {
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if (oldContainment === newContainment) {
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return;
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}
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var oldRefs, newRefs;
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if (is (oldContainment, 'bpmn:Lane')) {
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oldRefs = oldContainment.get('flowNodeRef');
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Collections.remove(oldRefs, businessObject);
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}
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if (is(newContainment, 'bpmn:Lane')) {
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newRefs = newContainment.get('flowNodeRef');
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Collections.add(newRefs, businessObject);
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}
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};
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BpmnUpdater.prototype.updateDiParent = function(di, parentDi) {
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if (parentDi && !is(parentDi, 'bpmndi:BPMNPlane')) {
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parentDi = parentDi.$parent;
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}
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if (di.$parent === parentDi) {
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return;
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}
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var planeElements = (parentDi || di.$parent).get('planeElement');
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if (parentDi) {
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planeElements.push(di);
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di.$parent = parentDi;
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} else {
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Collections.remove(planeElements, di);
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di.$parent = null;
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}
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};
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function getDefinitions(element) {
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while (element && !is(element, 'bpmn:Definitions')) {
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element = element.$parent;
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}
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return element;
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}
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BpmnUpdater.prototype.getLaneSet = function(container) {
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var laneSet, laneSets;
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// bpmn:Lane
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if (is(container, 'bpmn:Lane')) {
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laneSet = container.childLaneSet;
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if (!laneSet) {
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laneSet = this._bpmnFactory.create('bpmn:LaneSet');
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container.childLaneSet = laneSet;
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laneSet.$parent = container;
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}
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return laneSet;
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}
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// bpmn:Participant
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if (is(container, 'bpmn:Participant')) {
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container = container.processRef;
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}
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// bpmn:FlowElementsContainer
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laneSets = container.get('laneSets');
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laneSet = laneSets[0];
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if (!laneSet) {
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laneSet = this._bpmnFactory.create('bpmn:LaneSet');
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laneSet.$parent = container;
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laneSets.push(laneSet);
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}
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return laneSet;
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};
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BpmnUpdater.prototype.updateSemanticParent = function(businessObject, newParent) {
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var containment;
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if (businessObject.$parent === newParent) {
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return;
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}
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if (is(businessObject, 'bpmn:Lane')) {
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if (newParent) {
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newParent = this.getLaneSet(newParent);
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}
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containment = 'lanes';
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} else
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if (is(businessObject, 'bpmn:FlowElement')) {
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if (newParent) {
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if (is(newParent, 'bpmn:Participant')) {
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newParent = newParent.processRef;
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} else
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if (is(newParent, 'bpmn:Lane')) {
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do {
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// unwrap Lane -> LaneSet -> (Lane | FlowElementsContainer)
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newParent = newParent.$parent.$parent;
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} while(is(newParent, 'bpmn:Lane'));
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}
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}
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containment = 'flowElements';
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} else
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if (is(businessObject, 'bpmn:Artifact')) {
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while (newParent &&
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!is(newParent, 'bpmn:Process') &&
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!is(newParent, 'bpmn:SubProcess') &&
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!is(newParent, 'bpmn:Collaboration')) {
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if (is(newParent, 'bpmn:Participant')) {
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newParent = newParent.processRef;
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break;
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} else {
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newParent = newParent.$parent;
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}
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}
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containment = 'artifacts';
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} else
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if (is(businessObject, 'bpmn:MessageFlow')) {
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containment = 'messageFlows';
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} else
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if (is(businessObject, 'bpmn:Participant')) {
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containment = 'participants';
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// make sure the participants process is properly attached / detached
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// from the XML document
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var process = businessObject.processRef,
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definitions;
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if (process) {
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definitions = getDefinitions(businessObject.$parent || newParent);
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if (businessObject.$parent) {
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Collections.remove(definitions.get('rootElements'), process);
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process.$parent = null;
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}
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if (newParent) {
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Collections.add(definitions.get('rootElements'), process);
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process.$parent = definitions;
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}
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}
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}
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if (!containment) {
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throw new Error('no parent for ', businessObject, newParent);
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}
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var children;
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if (businessObject.$parent) {
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// remove from old parent
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children = businessObject.$parent.get(containment);
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Collections.remove(children, businessObject);
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}
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if (!newParent) {
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businessObject.$parent = null;
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} else {
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// add to new parent
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children = newParent.get(containment);
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children.push(businessObject);
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businessObject.$parent = newParent;
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}
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};
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BpmnUpdater.prototype.updateConnectionWaypoints = function(connection) {
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connection.businessObject.di.set('waypoint', this._bpmnFactory.createDiWaypoints(connection.waypoints));
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};
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BpmnUpdater.prototype.updateConnection = function(connection) {
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var businessObject = getBusinessObject(connection),
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newSource = getBusinessObject(connection.source),
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newTarget = getBusinessObject(connection.target);
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var inverseSet = is(businessObject, 'bpmn:SequenceFlow');
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if (businessObject.sourceRef !== newSource) {
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if (inverseSet) {
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Collections.remove(businessObject.sourceRef && businessObject.sourceRef.get('outgoing'), businessObject);
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if (newSource && newSource.get('outgoing')) {
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newSource.get('outgoing').push(businessObject);
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}
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}
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businessObject.sourceRef = newSource;
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}
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if (businessObject.targetRef !== newTarget) {
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if (inverseSet) {
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Collections.remove(businessObject.targetRef && businessObject.targetRef.get('incoming'), businessObject);
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if (newTarget && newTarget.get('incoming')) {
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newTarget.get('incoming').push(businessObject);
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}
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}
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businessObject.targetRef = newTarget;
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}
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businessObject.di.set('waypoint', this._bpmnFactory.createDiWaypoints(connection.waypoints));
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};
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/////// helpers /////////////////////////////////////////
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BpmnUpdater.prototype._getLabel = function(di) {
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if (!di.label) {
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di.label = this._bpmnFactory.createDiLabel();
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}
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return di.label;
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};
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