<!--
Copyright (c) 2006-2013, JGraph Ltd
Anchors example for mxGraph. This example demonstrates defining
fixed connection points for all shapes.
-->
<html>
<head>
<title>Anchors example for mxGraph</title>
<!-- Sets the basepath for the library if not in same directory -->
<script type="text/javascript">
mxBasePath = '../src';
</script>
<!-- Loads and initializes the library -->
<script type="text/javascript" src="../src/js/mxClient.js"></script>
<!-- Example code -->
<script type="text/javascript">
// Overridden to define per-shape connection points
mxGraph.prototype.getAllConnectionConstraints = function(terminal, source)
{
if (terminal != null && terminal.shape != null)
{
if (terminal.shape.stencil != null)
{
if (terminal.shape.stencil.constraints != null)
{
return terminal.shape.stencil.constraints;
}
}
else if (terminal.shape.constraints != null)
{
return terminal.shape.constraints;
}
}
return null;
};
// Defines the default constraints for all shapes
mxShape.prototype.constraints = [new mxConnectionConstraint(new mxPoint(0.25, 0), true),
new mxConnectionConstraint(new mxPoint(0.5, 0), true),
new mxConnectionConstraint(new mxPoint(0.75, 0), true),
new mxConnectionConstraint(new mxPoint(0, 0.25), true),
new mxConnectionConstraint(new mxPoint(0, 0.5), true),
new mxConnectionConstraint(new mxPoint(0, 0.75), true),
new mxConnectionConstraint(new mxPoint(1, 0.25), true),
new mxConnectionConstraint(new mxPoint(1, 0.5), true),
new mxConnectionConstraint(new mxPoint(1, 0.75), true),
new mxConnectionConstraint(new mxPoint(0.25, 1), true),
new mxConnectionConstraint(new mxPoint(0.5, 1), true),
new mxConnectionConstraint(new mxPoint(0.75, 1), true)];
// Edges have no connection points
mxPolyline.prototype.constraints = null;
// Program starts here. Creates a sample graph in the
// DOM node with the specified ID. This function is invoked
// from the onLoad event handler of the document (see below).
function main(container)
{
// Checks if the browser is supported
if (!mxClient.isBrowserSupported())
{
// Displays an error message if the browser is not supported.
mxUtils.error('Browser is not supported!', 200, false);
}
else
{
// Disables the built-in context menu
mxEvent.disableContextMenu(container);
// Creates the graph inside the given container
var graph = new mxGraph(container);
graph.setConnectable(true);
// Enables connect preview for the default edge style
graph.connectionHandler.createEdgeState = function(me)
{
var edge = graph.createEdge(null, null, null, null, null);
return new mxCellState(this.graph.view, edge, this.graph.getCellStyle(edge));
};
// Specifies the default edge style
graph.getStylesheet().getDefaultEdgeStyle()['edgeStyle'] = 'orthogonalEdgeStyle';
// Enables rubberband selection
new mxRubberband(graph);
// Gets the default parent for inserting new cells. This
// is normally the first child of the root (ie. layer 0).
var parent = graph.getDefaultParent();
// Adds cells to the model in a single step
graph.getModel().beginUpdate();
try
{
var v1 = graph.insertVertex(parent, null, 'Hello,', 20, 20, 80, 30);
var v2 = graph.insertVertex(parent, null, 'World!', 200, 150, 80, 30);
var e1 = graph.insertEdge(parent, null, '', v1, v2);
}
finally
{
// Updates the display
graph.getModel().endUpdate();
}
}
};
</script>
</head>
<!-- Page passes the container for the graph to the program -->
<body onload="main(document.getElementById('graphContainer'))">
<!-- Creates a container for the graph with a grid wallpaper -->
<div id="graphContainer"
style="position:relative;overflow:hidden;width:321px;height:241px;background:url('editors/images/grid.gif');cursor:default;">
</div>
</body>
</html>