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