696 lines
16 KiB
JavaScript
696 lines
16 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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isFunction,
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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 CoreModule from './core';
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import TranslateModule from 'diagram-js/lib/i18n/translate';
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import SelectionModule from 'diagram-js/lib/features/selection';
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import OverlaysModule from 'diagram-js/lib/features/overlays';
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function checkValidationError(err) {
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// check if we can help the user by indicating wrong BPMN 2.0 xml
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// (in case he or the exporting tool did not get that right)
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var pattern = /unparsable content <([^>]+)> detected([\s\S]*)$/;
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var match = pattern.exec(err.message);
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if (match) {
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err.message =
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'unparsable content <' + match[1] + '> detected; ' +
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'this may indicate an invalid BPMN 2.0 diagram file' + match[2];
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}
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return err;
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}
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var DEFAULT_OPTIONS = {
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width: '100%',
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height: '100%',
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position: 'relative'
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};
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/**
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* Ensure the passed argument is a proper unit (defaulting to px)
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*/
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function ensureUnit(val) {
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return val + (isNumber(val) ? 'px' : '');
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}
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/**
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* Find BPMNDiagram in definitions by ID
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*
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* @param {ModdleElement<Definitions>} definitions
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* @param {String} diagramId
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*
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* @return {ModdleElement<BPMNDiagram>|null}
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*/
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function findBPMNDiagram(definitions, diagramId) {
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if (!diagramId) {
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return null;
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}
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return find(definitions.diagrams, function(element) {
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return element.id === diagramId;
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}) || null;
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}
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/**
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* A viewer for BPMN 2.0 diagrams.
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*
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* Have a look at {@link NavigatedViewer} or {@link Modeler} for bundles that include
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* additional features.
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*
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*
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* ## Extending the Viewer
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*
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* In order to extend the viewer pass extension modules to bootstrap via the
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* `additionalModules` option. An extension module is an object that exposes
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* named services.
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*
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* The following example depicts the integration of a simple
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* logging component that integrates with interaction events:
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*
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*
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* ```javascript
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*
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* // logging component
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* function InteractionLogger(eventBus) {
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* eventBus.on('element.hover', function(event) {
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* console.log()
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* })
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* }
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*
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* InteractionLogger.$inject = [ 'eventBus' ]; // minification save
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*
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* // extension module
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* var extensionModule = {
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* __init__: [ 'interactionLogger' ],
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* interactionLogger: [ 'type', InteractionLogger ]
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* };
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*
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* // extend the viewer
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* var bpmnViewer = new Viewer({ additionalModules: [ extensionModule ] });
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* bpmnViewer.importXML(...);
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* ```
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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 Viewer(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(Viewer, Diagram);
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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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* @param {Function} [done] invoked with (err, warnings=[])
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*/
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Viewer.prototype.importXML = function(xml, bpmnDiagram, done) {
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if (isFunction(bpmnDiagram)) {
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done = bpmnDiagram;
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bpmnDiagram = null;
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}
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// done is optional
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done = done || function() {};
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var self = this;
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// hook in pre-parse listeners +
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// allow xml manipulation
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xml = this._emit('import.parse.start', { xml: xml }) || xml;
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this._moddle.fromXML(xml, 'bpmn:Definitions', function(err, definitions, context) {
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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', {
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error: err,
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definitions: definitions,
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context: context
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}) || definitions;
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var parseWarnings = context.warnings;
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if (err) {
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err = checkValidationError(err);
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self._emit('import.done', { error: err, warnings: parseWarnings });
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return done(err, parseWarnings);
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}
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self.importDefinitions(definitions, bpmnDiagram, function(err, importWarnings) {
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var allWarnings = [].concat(parseWarnings, importWarnings || []);
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self._emit('import.done', { error: err, warnings: allWarnings });
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done(err, allWarnings);
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});
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});
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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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* @param {Function} [done] invoked with (err, warnings=[])
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*/
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Viewer.prototype.importDefinitions = function(definitions, bpmnDiagram, done) {
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if (isFunction(bpmnDiagram)) {
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done = bpmnDiagram;
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bpmnDiagram = null;
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}
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// done is optional
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done = done || function() {};
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this._setDefinitions(definitions);
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return this.open(bpmnDiagram, done);
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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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* @param {Function} [done] invoked with (err, warnings=[])
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*/
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Viewer.prototype.open = function(bpmnDiagramOrId, done) {
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if (isFunction(bpmnDiagramOrId)) {
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done = bpmnDiagramOrId;
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bpmnDiagramOrId = null;
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}
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var definitions = this._definitions;
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var bpmnDiagram = bpmnDiagramOrId;
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// done is optional
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done = done || function() {};
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if (!definitions) {
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return done(new Error('no XML imported'));
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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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return done(new Error('BPMNDiagram <' + bpmnDiagramOrId + '> not found'));
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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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this.clear();
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} catch (error) {
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return done(error);
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}
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// perform graphical import
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return importBpmnDiagram(this, definitions, bpmnDiagram, done);
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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 formated XML
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* @param {Boolean} [options.preamble=true] output preamble
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*
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* @param {Function} done invoked with (err, xml)
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*/
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Viewer.prototype.saveXML = function(options, done) {
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if (!done) {
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done = options;
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options = {};
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}
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var self = this;
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var definitions = this._definitions;
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if (!definitions) {
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return done(new Error('no definitions loaded'));
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}
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// allow to fiddle around with definitions
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definitions = this._emit('saveXML.start', {
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definitions: definitions
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}) || definitions;
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this._moddle.toXML(definitions, options, function(err, xml) {
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try {
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xml = self._emit('saveXML.serialized', {
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error: err,
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xml: xml
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}) || xml;
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self._emit('saveXML.done', {
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error: err,
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xml: xml
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});
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} catch (e) {
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console.error('error in saveXML life-cycle listener', e);
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}
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done(err, xml);
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});
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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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* @param {Function} done invoked with (err, svgStr)
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*/
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Viewer.prototype.saveSVG = function(options, done) {
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if (!done) {
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done = options;
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options = {};
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}
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this._emit('saveSVG.start');
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var svg, err;
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try {
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var canvas = this.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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this._emit('saveSVG.done', {
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error: err,
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svg: svg
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});
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done(err, svg);
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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 Viewer#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 Viewer#invoke
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*/
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Viewer.prototype._setDefinitions = function(definitions) {
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this._definitions = definitions;
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};
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Viewer.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 Viewer#clear
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*/
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Viewer.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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Viewer.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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Viewer.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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Viewer.prototype.off = function(event, callback) {
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this.get('eventBus').off(event, callback);
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};
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Viewer.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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}
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if (typeof parentNode === 'string') {
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parentNode = domQuery(parentNode);
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}
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parentNode.appendChild(this._container);
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this._emit('attach', {});
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this.get('canvas').resized();
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};
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Viewer.prototype.getDefinitions = function() {
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return this._definitions;
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};
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Viewer.prototype.detach = function() {
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var container = this._container,
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parentNode = container.parentNode;
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if (!parentNode) {
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return;
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}
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this._emit('detach', {});
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parentNode.removeChild(container);
|
|
};
|
|
|
|
Viewer.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)
|
|
*/
|
|
Viewer.prototype._emit = function(type, event) {
|
|
return this.get('eventBus').fire(type, event);
|
|
};
|
|
|
|
Viewer.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;
|
|
};
|
|
|
|
Viewer.prototype._createModdle = function(options) {
|
|
var moddleOptions = assign({}, this._moddleExtensions, options.moddleExtensions);
|
|
|
|
return new BpmnModdle(moddleOptions);
|
|
};
|
|
|
|
// modules the viewer is composed of
|
|
Viewer.prototype._modules = [
|
|
CoreModule,
|
|
TranslateModule,
|
|
SelectionModule,
|
|
OverlaysModule
|
|
];
|
|
|
|
// default moddle extensions the viewer is composed of
|
|
Viewer.prototype._moddleExtensions = {};
|
|
|
|
/* <project-logo> */
|
|
|
|
import {
|
|
open as openPoweredBy,
|
|
BPMNIO_IMG
|
|
} 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">' +
|
|
img +
|
|
'</a>';
|
|
|
|
var linkElement = domify(linkMarkup);
|
|
|
|
container.appendChild(linkElement);
|
|
|
|
domEvent.bind(linkElement, 'click', function(event) {
|
|
openPoweredBy();
|
|
|
|
event.preventDefault();
|
|
});
|
|
}
|
|
|
|
/* </project-logo> */ |