<!--
Copyright (c) 2006-2013, JGraph Ltd
Consistuent example for mxGraph. This example demonstrates using
cells as parts of other cells.
-->
<html>
<head>
<title>Consistuent 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">
/**
* Redirects start drag to parent.
*/
var graphHandlerGetInitialCellForEvent = mxGraphHandler.prototype.getInitialCellForEvent;
mxGraphHandler.prototype.getInitialCellForEvent = function(me)
{
var cell = graphHandlerGetInitialCellForEvent.apply(this, arguments);
if (this.graph.isPart(cell))
{
cell = this.graph.getModel().getParent(cell)
}
return cell;
};
// 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.foldingEnabled = false;
graph.recursiveResize = true;
// Helper method to mark parts with constituent=1 in the style
graph.isPart = function(cell)
{
return this.getCurrentCellStyle(cell)['constituent'] == '1';
};
// Redirects selection to parent
graph.selectCellForEvent = function(cell)
{
if (this.isPart(cell))
{
cell = this.model.getParent(cell);
}
mxGraph.prototype.selectCellForEvent.apply(this, arguments);
};
// 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, '', 20, 20, 120, 70);
var v2 = graph.insertVertex(v1, null, 'Constituent', 20, 20, 80, 30, 'constituent=1;');
}
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>