1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 | 17× 111× 16× 16× 16× 16× 16× 16× 111× 16× 16× 16× 111× 16× 16× 16× 16× 16× 16× 16× 1× 15× 15× 15× 15× 15× 111× 16× 14× 14× 16× 1× | import { getMid } from '../../layout/LayoutUtil'; export default function Connect(eventBus, dragging, modeling, rules) { // rules function canConnect(source, target) { return rules.allowed('connection.create', { source: source, target: target }); } // event handlers eventBus.on('connect.hover', function(event) { var context = event.context, source = context.source, hover = event.hover, canExecute; canExecute = context.canExecute = canConnect(source, hover); // simply ignore hover Iif (canExecute === null) { return; } context.target = hover; }); eventBus.on([ 'connect.out', 'connect.cleanup' ], function(event) { var context = event.context; context.target = null; context.canExecute = false; }); eventBus.on('connect.end', function(event) { var context = event.context, source = context.source, sourcePosition = context.sourcePosition, target = context.target, targetPosition = { x: event.x, y: event.y }, canExecute = context.canExecute || canConnect(source, target); if (!canExecute) { return false; } var attrs = null, hints = { connectionStart: sourcePosition, connectionEnd: targetPosition }; Eif (typeof canExecute === 'object') { attrs = canExecute; } modeling.connect(source, target, attrs, hints); }); // API /** * Start connect operation. * * @param {DOMEvent} event * @param {djs.model.Base} source * @param {Point} [sourcePosition] * @param {Boolean} [autoActivate=false] */ this.start = function(event, source, sourcePosition, autoActivate) { if (typeof sourcePosition !== 'object') { autoActivate = sourcePosition; sourcePosition = getMid(source); } dragging.init(event, 'connect', { autoActivate: autoActivate, data: { shape: source, context: { source: source, sourcePosition: sourcePosition } } }); }; } Connect.$inject = [ 'eventBus', 'dragging', 'modeling', 'rules' ]; |