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| -rw-r--r-- | index.html | 44 |
1 files changed, 44 insertions, 0 deletions
@@ -609,6 +609,50 @@ alert("Control port must be connected to command port"); } else { + + /* + * For reverse edges, (that is, edges from input port to outport) : + * If the source is input port, and target is an output port + * NOTE: Manipulation of source object and target object + * with respect to current edge is not possible, + * as mxGraph.prototype.addEdge(@parameters) function is + * called just before the creation of the edge. + * Hence, the following code creates a identical new edge + * to replace the current edge. + */ + + if((source.value.indexOf('Input') != -1 && target.value.indexOf('Output') != -1) + || (target.value == 'CommandPort' && source.value == 'ControlPort')) { + + // Begin graph DOM update + graph.getModel().beginUpdate(); + + try { + + // Insert new edge in place of current edge + var newEdge = graph.insertEdge(parent, null, '', target, source); + + // Get points for the current edge from the global edgeState object + var waypoints = edgeState.absolutePoints; + + // Reverse waypoint array + waypoints.reverse(); + + // Set the points for the new edge + newEdge.geometry.points = waypoints; + } + finally { + graph.getModel().endUpdate(); + } + + // Return null for the current edge, + + /* + * Return null for the current edge, + * since we have created a new edge above to replace it + */ + return null; + } // If the edge is legit, return the edge. return mxGraph.prototype.addEdge.apply(this, arguments); } |