790 lines
18 KiB
JavaScript
790 lines
18 KiB
JavaScript
/**
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* The code in the <project-logo></project-logo> area
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* must not be changed.
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*
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* @see http://bpmn.io/license for more information.
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*/
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import {
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assign,
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find,
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isNumber,
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omit
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} from 'min-dash';
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import {
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domify,
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query as domQuery,
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remove as domRemove
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} from 'min-dom';
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import {
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innerSVG
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} from 'tiny-svg';
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import Diagram from 'diagram-js';
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import BpmnModdle from 'bpmn-moddle';
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import inherits from 'inherits';
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import {
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importBpmnDiagram
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} from './import/Importer';
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import {
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wrapForCompatibility
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} from './util/CompatibilityUtil';
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/**
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* A base viewer for BPMN 2.0 diagrams.
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*
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* Have a look at {@link Viewer}, {@link NavigatedViewer} or {@link Modeler} for
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* bundles that include 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 BaseViewer(options) {
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options = assign({}, DEFAULT_OPTIONS, options);
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this._moddle = this._createModdle(options);
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this._container = this._createContainer(options);
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/* <project-logo> */
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addProjectLogo(this._container);
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/* </project-logo> */
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this._init(this._container, this._moddle, options);
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}
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inherits(BaseViewer, Diagram);
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/**
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* The importXML result.
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*
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* @typedef {Object} ImportXMLResult
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*
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* @property {Array<string>} warnings
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*/
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/**
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* The importXML error.
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*
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* @typedef {Error} ImportXMLError
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*
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* @property {Array<string>} warnings
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*/
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/**
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* Parse and render a BPMN 2.0 diagram.
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*
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* Once finished the viewer reports back the result to the
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* provided callback function with (err, warnings).
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*
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* ## Life-Cycle Events
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*
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* During import the viewer will fire life-cycle events:
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*
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* * import.parse.start (about to read model from xml)
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* * import.parse.complete (model read; may have worked or not)
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* * import.render.start (graphical import start)
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* * import.render.complete (graphical import finished)
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* * import.done (everything done)
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*
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* You can use these events to hook into the life-cycle.
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*
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* @param {string} xml the BPMN 2.0 xml
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* @param {ModdleElement<BPMNDiagram>|string} [bpmnDiagram] BPMN diagram or id of diagram to render (if not provided, the first one will be rendered)
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*
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* Returns {Promise<ImportXMLResult, ImportXMLError>}
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*/
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BaseViewer.prototype.importXML = wrapForCompatibility(function importXML(xml, bpmnDiagram) {
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var self = this;
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function ParseCompleteEvent(data) {
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var event = self.get('eventBus').createEvent(data);
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// TODO(nikku): remove with future bpmn-js version
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Object.defineProperty(event, 'context', {
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enumerable: true,
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get: function() {
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console.warn(new Error(
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'import.parse.complete <context> is deprecated ' +
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'and will be removed in future library versions'
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));
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return {
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warnings: data.warnings,
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references: data.references,
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elementsById: data.elementsById
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};
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}
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});
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return event;
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}
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return new Promise(function(resolve, reject) {
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// hook in pre-parse listeners +
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// allow xml manipulation
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xml = self._emit('import.parse.start', { xml: xml }) || xml;
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self._moddle.fromXML(xml, 'bpmn:Definitions').then(function(result) {
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var definitions = result.rootElement;
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var references = result.references;
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var parseWarnings = result.warnings;
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var elementsById = result.elementsById;
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// hook in post parse listeners +
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// allow definitions manipulation
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definitions = self._emit('import.parse.complete', ParseCompleteEvent({
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error: null,
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definitions: definitions,
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elementsById: elementsById,
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references: references,
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warnings: parseWarnings
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})) || definitions;
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self.importDefinitions(definitions, bpmnDiagram).then(function(result) {
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var allWarnings = [].concat(parseWarnings, result.warnings || []);
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self._emit('import.done', { error: null, warnings: allWarnings });
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return resolve({ warnings: allWarnings });
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}).catch(function(err) {
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var allWarnings = [].concat(parseWarnings, err.warnings || []);
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self._emit('import.done', { error: err, warnings: allWarnings });
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return reject(addWarningsToError(err, allWarnings));
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});
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}).catch(function(err) {
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self._emit('import.parse.complete', {
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error: err
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});
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err = checkValidationError(err);
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self._emit('import.done', { error: err, warnings: err.warnings });
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return reject(err);
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});
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});
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});
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/**
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* The importDefinitions result.
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*
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* @typedef {Object} ImportDefinitionsResult
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*
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* @property {Array<string>} warnings
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*/
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/**
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* The importDefinitions error.
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*
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* @typedef {Error} ImportDefinitionsError
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*
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* @property {Array<string>} warnings
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*/
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/**
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* Import parsed definitions and render a BPMN 2.0 diagram.
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*
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* Once finished the viewer reports back the result to the
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* provided callback function with (err, warnings).
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*
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* ## Life-Cycle Events
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*
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* During import the viewer will fire life-cycle events:
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*
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* * import.render.start (graphical import start)
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* * import.render.complete (graphical import finished)
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*
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* You can use these events to hook into the life-cycle.
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*
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* @param {ModdleElement<Definitions>} definitions parsed BPMN 2.0 definitions
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* @param {ModdleElement<BPMNDiagram>|string} [bpmnDiagram] BPMN diagram or id of diagram to render (if not provided, the first one will be rendered)
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*
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* Returns {Promise<ImportDefinitionsResult, ImportDefinitionsError>}
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*/
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BaseViewer.prototype.importDefinitions = wrapForCompatibility(function importDefinitions(definitions, bpmnDiagram) {
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var self = this;
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return new Promise(function(resolve, reject) {
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self._setDefinitions(definitions);
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self.open(bpmnDiagram).then(function(result) {
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var warnings = result.warnings;
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return resolve({ warnings: warnings });
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}).catch(function(err) {
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return reject(err);
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});
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});
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});
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/**
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* The open result.
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*
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* @typedef {Object} OpenResult
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*
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* @property {Array<string>} warnings
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*/
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/**
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* The open error.
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*
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* @typedef {Error} OpenError
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*
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* @property {Array<string>} warnings
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*/
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/**
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* Open diagram of previously imported XML.
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*
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* Once finished the viewer reports back the result to the
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* provided callback function with (err, warnings).
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*
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* ## Life-Cycle Events
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*
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* During switch the viewer will fire life-cycle events:
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*
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* * import.render.start (graphical import start)
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* * import.render.complete (graphical import finished)
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*
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* You can use these events to hook into the life-cycle.
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*
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* @param {string|ModdleElement<BPMNDiagram>} [bpmnDiagramOrId] id or the diagram to open
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*
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* Returns {Promise<OpenResult, OpenError>}
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*/
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BaseViewer.prototype.open = wrapForCompatibility(function open(bpmnDiagramOrId) {
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var definitions = this._definitions;
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var bpmnDiagram = bpmnDiagramOrId;
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var self = this;
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return new Promise(function(resolve, reject) {
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if (!definitions) {
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var err1 = new Error('no XML imported');
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return reject(addWarningsToError(err1, []));
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}
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if (typeof bpmnDiagramOrId === 'string') {
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bpmnDiagram = findBPMNDiagram(definitions, bpmnDiagramOrId);
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if (!bpmnDiagram) {
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var err2 = new Error('BPMNDiagram <' + bpmnDiagramOrId + '> not found');
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return reject(addWarningsToError(err2, []));
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}
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}
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// clear existing rendered diagram
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// catch synchronous exceptions during #clear()
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try {
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self.clear();
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} catch (error) {
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return reject(addWarningsToError(error, []));
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}
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// perform graphical import
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importBpmnDiagram(self, definitions, bpmnDiagram).then(function(result) {
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var warnings = result.warnings;
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return resolve({ warnings: warnings });
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}).catch(function(err) {
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return reject(err);
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});
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});
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});
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/**
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* The saveXML result.
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*
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* @typedef {Object} SaveXMLResult
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*
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* @property {string} xml
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*/
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/**
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* Export the currently displayed BPMN 2.0 diagram as
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* a BPMN 2.0 XML document.
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*
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* ## Life-Cycle Events
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*
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* During XML saving the viewer will fire life-cycle events:
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*
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* * saveXML.start (before serialization)
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* * saveXML.serialized (after xml generation)
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* * saveXML.done (everything done)
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*
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* You can use these events to hook into the life-cycle.
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*
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* @param {Object} [options] export options
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* @param {boolean} [options.format=false] output formatted XML
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* @param {boolean} [options.preamble=true] output preamble
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*
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* Returns {Promise<SaveXMLResult, Error>}
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*/
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BaseViewer.prototype.saveXML = wrapForCompatibility(function saveXML(options) {
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options = options || {};
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var self = this;
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var definitions = this._definitions;
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return new Promise(function(resolve) {
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if (!definitions) {
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return resolve({
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error: new Error('no definitions loaded')
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});
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}
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// allow to fiddle around with definitions
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definitions = self._emit('saveXML.start', {
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definitions: definitions
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}) || definitions;
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self._moddle.toXML(definitions, options).then(function(result) {
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var xml = result.xml;
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xml = self._emit('saveXML.serialized', {
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xml: xml
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}) || xml;
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return resolve({
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xml: xml
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});
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});
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}).catch(function(error) {
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return { error: error };
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}).then(function(result) {
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self._emit('saveXML.done', result);
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var error = result.error;
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if (error) {
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return Promise.reject(error);
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}
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return result;
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});
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});
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/**
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* The saveSVG result.
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*
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* @typedef {Object} SaveSVGResult
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*
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* @property {string} svg
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*/
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/**
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* Export the currently displayed BPMN 2.0 diagram as
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* an SVG image.
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*
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* ## Life-Cycle Events
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*
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* During SVG saving the viewer will fire life-cycle events:
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*
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* * saveSVG.start (before serialization)
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* * saveSVG.done (everything done)
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*
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* You can use these events to hook into the life-cycle.
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*
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* @param {Object} [options]
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*
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* Returns {Promise<SaveSVGResult, Error>}
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*/
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BaseViewer.prototype.saveSVG = wrapForCompatibility(function saveSVG(options) {
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options = options || {};
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var self = this;
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return new Promise(function(resolve, reject) {
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self._emit('saveSVG.start');
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var svg, err;
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try {
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var canvas = self.get('canvas');
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var contentNode = canvas.getDefaultLayer(),
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defsNode = domQuery('defs', canvas._svg);
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var contents = innerSVG(contentNode),
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defs = defsNode ? '<defs>' + innerSVG(defsNode) + '</defs>' : '';
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var bbox = contentNode.getBBox();
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svg =
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'<?xml version="1.0" encoding="utf-8"?>\n' +
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'<!-- created with bpmn-js / http://bpmn.io -->\n' +
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'<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">\n' +
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'<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" ' +
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'width="' + bbox.width + '" height="' + bbox.height + '" ' +
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'viewBox="' + bbox.x + ' ' + bbox.y + ' ' + bbox.width + ' ' + bbox.height + '" version="1.1">' +
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defs + contents +
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'</svg>';
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} catch (e) {
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err = e;
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}
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self._emit('saveSVG.done', {
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error: err,
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svg: svg
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});
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if (!err) {
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return resolve({ svg: svg });
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}
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return reject(err);
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});
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});
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/**
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* Get a named diagram service.
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*
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* @example
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*
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* var elementRegistry = viewer.get('elementRegistry');
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* var startEventShape = elementRegistry.get('StartEvent_1');
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*
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* @param {string} name
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*
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* @return {Object} diagram service instance
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*
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* @method BaseViewer#get
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*/
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/**
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* Invoke a function in the context of this viewer.
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*
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* @example
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*
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* viewer.invoke(function(elementRegistry) {
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* var startEventShape = elementRegistry.get('StartEvent_1');
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* });
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*
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* @param {Function} fn to be invoked
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*
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* @return {Object} the functions return value
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*
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* @method BaseViewer#invoke
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*/
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BaseViewer.prototype._setDefinitions = function(definitions) {
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this._definitions = definitions;
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};
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BaseViewer.prototype.getModules = function() {
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return this._modules;
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};
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/**
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* Remove all drawn elements from the viewer.
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*
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* After calling this method the viewer can still
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* be reused for opening another diagram.
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*
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* @method BaseViewer#clear
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*/
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BaseViewer.prototype.clear = function() {
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if (!this.getDefinitions()) {
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// no diagram to clear
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return;
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}
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// remove businessObject#di binding
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//
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// this is necessary, as we establish the bindings
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// in the BpmnTreeWalker (and assume none are given
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// on reimport)
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this.get('elementRegistry').forEach(function(element) {
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var bo = element.businessObject;
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if (bo && bo.di) {
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delete bo.di;
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}
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});
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// remove drawn elements
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Diagram.prototype.clear.call(this);
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};
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/**
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* Destroy the viewer instance and remove all its
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* remainders from the document tree.
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*/
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BaseViewer.prototype.destroy = function() {
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// diagram destroy
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Diagram.prototype.destroy.call(this);
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// dom detach
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domRemove(this._container);
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};
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/**
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* Register an event listener
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*
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* Remove a previously added listener via {@link #off(event, callback)}.
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*
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* @param {string} event
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* @param {number} [priority]
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* @param {Function} callback
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* @param {Object} [that]
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*/
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BaseViewer.prototype.on = function(event, priority, callback, target) {
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return this.get('eventBus').on(event, priority, callback, target);
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};
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/**
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* De-register an event listener
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*
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* @param {string} event
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* @param {Function} callback
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*/
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BaseViewer.prototype.off = function(event, callback) {
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this.get('eventBus').off(event, callback);
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};
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BaseViewer.prototype.attachTo = function(parentNode) {
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if (!parentNode) {
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throw new Error('parentNode required');
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}
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// ensure we detach from the
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// previous, old parent
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this.detach();
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// unwrap jQuery if provided
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if (parentNode.get && parentNode.constructor.prototype.jquery) {
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parentNode = parentNode.get(0);
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}
|
|
|
|
if (typeof parentNode === 'string') {
|
|
parentNode = domQuery(parentNode);
|
|
}
|
|
|
|
parentNode.appendChild(this._container);
|
|
|
|
this._emit('attach', {});
|
|
|
|
this.get('canvas').resized();
|
|
};
|
|
|
|
BaseViewer.prototype.getDefinitions = function() {
|
|
return this._definitions;
|
|
};
|
|
|
|
BaseViewer.prototype.detach = function() {
|
|
|
|
var container = this._container,
|
|
parentNode = container.parentNode;
|
|
|
|
if (!parentNode) {
|
|
return;
|
|
}
|
|
|
|
this._emit('detach', {});
|
|
|
|
parentNode.removeChild(container);
|
|
};
|
|
|
|
BaseViewer.prototype._init = function(container, moddle, options) {
|
|
|
|
var baseModules = options.modules || this.getModules(),
|
|
additionalModules = options.additionalModules || [],
|
|
staticModules = [
|
|
{
|
|
bpmnjs: [ 'value', this ],
|
|
moddle: [ 'value', moddle ]
|
|
}
|
|
];
|
|
|
|
var diagramModules = [].concat(staticModules, baseModules, additionalModules);
|
|
|
|
var diagramOptions = assign(omit(options, [ 'additionalModules' ]), {
|
|
canvas: assign({}, options.canvas, { container: container }),
|
|
modules: diagramModules
|
|
});
|
|
|
|
// invoke diagram constructor
|
|
Diagram.call(this, diagramOptions);
|
|
|
|
if (options && options.container) {
|
|
this.attachTo(options.container);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Emit an event on the underlying {@link EventBus}
|
|
*
|
|
* @param {string} type
|
|
* @param {Object} event
|
|
*
|
|
* @return {Object} event processing result (if any)
|
|
*/
|
|
BaseViewer.prototype._emit = function(type, event) {
|
|
return this.get('eventBus').fire(type, event);
|
|
};
|
|
|
|
BaseViewer.prototype._createContainer = function(options) {
|
|
|
|
var container = domify('<div class="bjs-container"></div>');
|
|
|
|
assign(container.style, {
|
|
width: ensureUnit(options.width),
|
|
height: ensureUnit(options.height),
|
|
position: options.position
|
|
});
|
|
|
|
return container;
|
|
};
|
|
|
|
BaseViewer.prototype._createModdle = function(options) {
|
|
var moddleOptions = assign({}, this._moddleExtensions, options.moddleExtensions);
|
|
|
|
return new BpmnModdle(moddleOptions);
|
|
};
|
|
|
|
BaseViewer.prototype._modules = [];
|
|
|
|
// helpers ///////////////
|
|
|
|
function addWarningsToError(err, warningsAry) {
|
|
err.warnings = warningsAry;
|
|
return err;
|
|
}
|
|
|
|
function checkValidationError(err) {
|
|
|
|
// check if we can help the user by indicating wrong BPMN 2.0 xml
|
|
// (in case he or the exporting tool did not get that right)
|
|
|
|
var pattern = /unparsable content <([^>]+)> detected([\s\S]*)$/;
|
|
var match = pattern.exec(err.message);
|
|
|
|
if (match) {
|
|
err.message =
|
|
'unparsable content <' + match[1] + '> detected; ' +
|
|
'this may indicate an invalid BPMN 2.0 diagram file' + match[2];
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
var DEFAULT_OPTIONS = {
|
|
width: '100%',
|
|
height: '100%',
|
|
position: 'relative'
|
|
};
|
|
|
|
|
|
/**
|
|
* Ensure the passed argument is a proper unit (defaulting to px)
|
|
*/
|
|
function ensureUnit(val) {
|
|
return val + (isNumber(val) ? 'px' : '');
|
|
}
|
|
|
|
|
|
/**
|
|
* Find BPMNDiagram in definitions by ID
|
|
*
|
|
* @param {ModdleElement<Definitions>} definitions
|
|
* @param {string} diagramId
|
|
*
|
|
* @return {ModdleElement<BPMNDiagram>|null}
|
|
*/
|
|
function findBPMNDiagram(definitions, diagramId) {
|
|
if (!diagramId) {
|
|
return null;
|
|
}
|
|
|
|
return find(definitions.diagrams, function(element) {
|
|
return element.id === diagramId;
|
|
}) || null;
|
|
}
|
|
|
|
|
|
/* <project-logo> */
|
|
|
|
import {
|
|
open as openPoweredBy,
|
|
BPMNIO_IMG,
|
|
LINK_STYLES as BPMNIO_LINK_STYLES
|
|
} from './util/PoweredByUtil';
|
|
|
|
import {
|
|
event as domEvent
|
|
} from 'min-dom';
|
|
|
|
/**
|
|
* Adds the project logo to the diagram container as
|
|
* required by the bpmn.io license.
|
|
*
|
|
* @see http://bpmn.io/license
|
|
*
|
|
* @param {Element} container
|
|
*/
|
|
function addProjectLogo(container) {
|
|
var img = BPMNIO_IMG;
|
|
|
|
var linkMarkup =
|
|
'<a href="http://bpmn.io" ' +
|
|
'target="_blank" ' +
|
|
'class="bjs-powered-by" ' +
|
|
'title="Powered by bpmn.io" ' +
|
|
'style="position: absolute; bottom: 15px; right: 15px; z-index: 100; ' + BPMNIO_LINK_STYLES + '">' +
|
|
img +
|
|
'</a>';
|
|
|
|
var linkElement = domify(linkMarkup);
|
|
|
|
container.appendChild(linkElement);
|
|
|
|
domEvent.bind(linkElement, 'click', function(event) {
|
|
openPoweredBy();
|
|
|
|
event.preventDefault();
|
|
});
|
|
}
|
|
|
|
/* </project-logo> */
|