120 lines
2.7 KiB
JavaScript
120 lines
2.7 KiB
JavaScript
'use strict';
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var assign = require('lodash/object/assign'),
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forEach = require('lodash/collection/forEach');
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var LabelUtil = require('../../util/LabelUtil');
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var hasExternalLabel = LabelUtil.hasExternalLabel,
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getExternalLabelMid = LabelUtil.getExternalLabelMid;
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function LabelSupport(eventBus, modeling, bpmnFactory) {
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// create external labels on shape creation
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eventBus.on([
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'commandStack.shape.create.postExecute',
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'commandStack.connection.create.postExecute'
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], function(e) {
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var context = e.context;
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var element = context.shape || context.connection,
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businessObject = element.businessObject;
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var position;
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if (hasExternalLabel(businessObject)) {
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position = getExternalLabelMid(element);
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modeling.createLabel(element, position, {
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id: businessObject.id + '_label',
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businessObject: businessObject
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});
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}
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});
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// indicate label is dragged during move
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// we need to add labels to the list of selected
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// shapes before the visuals get drawn.
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//
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// Hence this awesome magic number.
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//
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eventBus.on('shape.move.start', function(e) {
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var context = e.context,
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shapes = context.shapes;
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var labels = [];
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forEach(shapes, function(element) {
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var label = element.label;
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if (label && !label.hidden && context.shapes.indexOf(label) === -1) {
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labels.push(label);
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}
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});
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forEach(labels, function(label) {
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shapes.push(label);
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});
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});
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// move labels with shapes
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eventBus.on([
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'commandStack.shapes.move.postExecute'
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], function(e) {
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var context = e.context,
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closure = context.closure,
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enclosedElements = closure.enclosedElements;
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// ensure we move all labels with their respective elements
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// if they have not been moved already
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forEach(enclosedElements, function(e) {
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if (e.label && !enclosedElements[e.label.id]) {
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modeling.moveShape(e.label, context.delta, e.parent);
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}
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});
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});
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// update di information on label movement and creation
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eventBus.on([
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'commandStack.label.create.executed',
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'commandStack.shape.moved.executed'
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], function(e) {
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var element = e.context.shape,
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businessObject = element.businessObject,
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di = businessObject.di;
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// we want to trigger on real labels only
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if (!element.labelTarget) {
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return;
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}
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if (!di.label) {
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di.label = bpmnFactory.create('bpmndi:BPMNLabel', {
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bounds: bpmnFactory.create('dc:Bounds')
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});
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}
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assign(di.label.bounds, {
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x: element.x,
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y: element.y,
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width: element.width,
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height: element.height
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});
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});
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}
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LabelSupport.$inject = [ 'eventBus', 'modeling', 'bpmnFactory' ];
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module.exports = LabelSupport;
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