import inherits from 'inherits'; import Ids from 'ids'; import BaseViewer from './BaseViewer'; /** * A base modeler for BPMN 2.0 diagrams. * * Have a look at {@link Modeler} for a bundle that includes actual features. * * @param {Object} [options] configuration options to pass to the viewer * @param {DOMElement} [options.container] the container to render the viewer in, defaults to body. * @param {string|number} [options.width] the width of the viewer * @param {string|number} [options.height] the height of the viewer * @param {Object} [options.moddleExtensions] extension packages to provide * @param {Array} [options.modules] a list of modules to override the default modules * @param {Array} [options.additionalModules] a list of modules to use with the default modules */ export default function BaseModeler(options) { BaseViewer.call(this, options); // hook ID collection into the modeler this.on('import.parse.complete', function(event) { if (!event.error) { this._collectIds(event.definitions, event.context); } }, this); this.on('diagram.destroy', function() { this.get('moddle').ids.clear(); }, this); } inherits(BaseModeler, BaseViewer); /** * Create a moddle instance, attaching ids to it. * * @param {Object} options */ BaseModeler.prototype._createModdle = function(options) { var moddle = BaseViewer.prototype._createModdle.call(this, options); // attach ids to moddle to be able to track // and validated ids in the BPMN 2.0 XML document // tree moddle.ids = new Ids([ 32, 36, 1 ]); return moddle; }; /** * Collect ids processed during parsing of the * definitions object. * * @param {ModdleElement} definitions * @param {Context} context */ BaseModeler.prototype._collectIds = function(definitions, context) { var moddle = definitions.$model, ids = moddle.ids, id; // remove references from previous import ids.clear(); for (id in context.elementsById) { ids.claim(id, context.elementsById[id]); } };