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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 | 559× 559× 1× 1× 26× 26× 26× 26× 26× 26× 3× 26× 26× 26× 1× 26× 25× 25× 26× 26× 26× 2× 2× 2× 2× 2× 2× 26× 1× 1× 1× 1× 1× 1× 1× 26× 26× 26× 26× 2× 26× 1× 26× 1× 1× 1× 26× 26× 1× 1× 1× 1× 2× 2× | import { forEach } from 'min-dash'; /** * A handler that implements reversible replacing of shapes. * Internally the old shape will be removed and the new shape will be added. * * * @class * @constructor * * @param {canvas} Canvas */ export default function ReplaceShapeHandler(modeling, rules) { this._modeling = modeling; this._rules = rules; } ReplaceShapeHandler.$inject = [ 'modeling', 'rules' ]; // api ////////////////////// /** * Replaces a shape with an replacement Element. * * The newData object should contain type, x, y. * * If possible also the incoming/outgoing connection * will be restored. * * @param {Object} context */ ReplaceShapeHandler.prototype.preExecute = function(context) { var self = this, modeling = this._modeling, rules = this._rules; var oldShape = context.oldShape, newData = context.newData, hints = context.hints, newShape; function canReconnect(type, source, target, connection) { return rules.allowed(type, { source: source, target: target, connection: connection }); } // (1) place a new shape at the given position var position = { x: newData.x, y: newData.y }; newShape = context.newShape = context.newShape || self.createShape(newData, position, oldShape.parent); // (2) update the host if (oldShape.host) { modeling.updateAttachment(newShape, oldShape.host); } // (3) adopt all children from the old shape var children; if (hints.moveChildren !== false) { children = oldShape.children.slice(); modeling.moveElements(children, { x: 0, y: 0 }, newShape); } // (4) reconnect connections to the new shape (where allowed) var incoming = oldShape.incoming.slice(), outgoing = oldShape.outgoing.slice(); forEach(incoming, function(connection) { var waypoints = connection.waypoints, docking = waypoints[waypoints.length - 1], source = connection.source, allowed = canReconnect('connection.reconnectEnd', source, newShape, connection); Eif (allowed) { self.reconnectEnd(connection, newShape, docking); } }); forEach(outgoing, function(connection) { var waypoints = connection.waypoints, docking = waypoints[0], target = connection.target, allowed = canReconnect('connection.reconnectStart', newShape, target, connection); Eif (allowed) { self.reconnectStart(connection, newShape, docking); } }); }; ReplaceShapeHandler.prototype.postExecute = function(context) { var modeling = this._modeling; var oldShape = context.oldShape, newShape = context.newShape; // if an element gets resized on replace, layout the connection again forEach(newShape.incoming, function(c) { modeling.layoutConnection(c, { endChanged: true }); }); forEach(newShape.outgoing, function(c) { modeling.layoutConnection(c, { startChanged: true }); }); modeling.removeShape(oldShape); }; ReplaceShapeHandler.prototype.execute = function(context) {}; ReplaceShapeHandler.prototype.revert = function(context) {}; ReplaceShapeHandler.prototype.createShape = function(shape, position, target) { var modeling = this._modeling; return modeling.createShape(shape, position, target); }; ReplaceShapeHandler.prototype.reconnectStart = function(connection, newSource, dockingPoint) { var modeling = this._modeling; modeling.reconnectStart(connection, newSource, dockingPoint); }; ReplaceShapeHandler.prototype.reconnectEnd = function(connection, newTarget, dockingPoint) { var modeling = this._modeling; modeling.reconnectEnd(connection, newTarget, dockingPoint); }; |