bpmn-js/lib/Modeler.js

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'use strict';
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var inherits = require('inherits');
var Ids = require('ids');
var Viewer = require('./Viewer');
var NavigatedViewer = require('./NavigatedViewer');
var initialDiagram =
'<?xml version="1.0" encoding="UTF-8"?>' +
'<bpmn:definitions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" ' +
'xmlns:bpmn="http://www.omg.org/spec/BPMN/20100524/MODEL" ' +
'xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" ' +
'xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" ' +
'targetNamespace="http://bpmn.io/schema/bpmn" ' +
'id="Definitions_1">' +
'<bpmn:process id="Process_1" isExecutable="false">' +
'<bpmn:startEvent id="StartEvent_1"/>' +
'</bpmn:process>' +
'<bpmndi:BPMNDiagram id="BPMNDiagram_1">' +
'<bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Process_1">' +
'<bpmndi:BPMNShape id="_BPMNShape_StartEvent_2" bpmnElement="StartEvent_1">' +
'<dc:Bounds height="36.0" width="36.0" x="173.0" y="102.0"/>' +
'</bpmndi:BPMNShape>' +
'</bpmndi:BPMNPlane>' +
'</bpmndi:BPMNDiagram>' +
'</bpmn:definitions>';
/**
* A modeler for BPMN 2.0 diagrams.
*
*
* ## Extending the Modeler
*
* In order to extend the viewer pass extension modules to bootstrap via the
* `additionalModules` option. An extension module is an object that exposes
* named services.
*
* The following example depicts the integration of a simple
* logging component that integrates with interaction events:
*
*
* ```javascript
*
* // logging component
* function InteractionLogger(eventBus) {
* eventBus.on('element.hover', function(event) {
* console.log()
* })
* }
*
* InteractionLogger.$inject = [ 'eventBus' ]; // minification save
*
* // extension module
* var extensionModule = {
* __init__: [ 'interactionLogger' ],
* interactionLogger: [ 'type', InteractionLogger ]
* };
*
* // extend the viewer
* var bpmnModeler = new Modeler({ additionalModules: [ extensionModule ] });
* bpmnModeler.importXML(...);
* ```
*
*
* ## Customizing / Replacing Components
*
* You can replace individual diagram components by redefining them in override modules.
* This works for all components, including those defined in the core.
*
* Pass in override modules via the `options.additionalModules` flag like this:
*
* ```javascript
* function CustomContextPadProvider(contextPad) {
*
* contextPad.registerProvider(this);
*
* this.getContextPadEntries = function(element) {
* // no entries, effectively disable the context pad
* return {};
* };
* }
*
* CustomContextPadProvider.$inject = [ 'contextPad' ];
*
* var overrideModule = {
* contextPadProvider: [ 'type', CustomContextPadProvider ]
* };
*
* var bpmnModeler = new Modeler({ additionalModules: [ overrideModule ]});
* ```
*
* @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<didi.Module>} [options.modules] a list of modules to override the default modules
* @param {Array<didi.Module>} [options.additionalModules] a list of modules to use with the default modules
*/
function Modeler(options) {
Viewer.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);
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this.on('diagram.destroy', function() {
this.moddle.ids.clear();
}, this);
}
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inherits(Modeler, Viewer);
module.exports = Modeler;
module.exports.Viewer = Viewer;
module.exports.NavigatedViewer = NavigatedViewer;
/**
* Create a new diagram to start modeling.
*
* @param {Function} [done]
*/
Modeler.prototype.createDiagram = function(done) {
return this.importXML(initialDiagram, done);
};
/**
* Create a moddle instance, attaching ids to it.
*
* @param {Object} options
*/
Modeler.prototype._createModdle = function(options) {
var moddle = Viewer.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
*/
Modeler.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]);
}
};
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Modeler.prototype._interactionModules = [
// non-modeling components
require('diagram-js/lib/navigation/movecanvas'),
require('diagram-js/lib/navigation/touch'),
require('diagram-js/lib/navigation/zoomscroll')
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];
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Modeler.prototype._modelingModules = [
// modeling components
require('diagram-js/lib/features/auto-scroll'),
require('diagram-js/lib/features/bendpoints'),
require('diagram-js/lib/features/move'),
require('diagram-js/lib/features/resize'),
require('./features/auto-resize'),
require('./features/editor-actions'),
require('./features/context-pad'),
require('./features/keyboard'),
require('./features/label-editing'),
require('./features/modeling'),
require('./features/palette'),
require('./features/replace-preview'),
require('./features/snapping')
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];
// modules the modeler is composed of
//
// - viewer modules
// - interaction modules
// - modeling modules
Modeler.prototype._modules = [].concat(
Modeler.prototype._modules,
Modeler.prototype._interactionModules,
Modeler.prototype._modelingModules);