<!--
Copyright (c) 2006-2013, JGraph Ltd
Offpage example for mxGraph. This example demonstrates creating
offpage connectors in a graph and loading a new diagram on a
single click.
-->
<html>
<head>
<title>Offpage connector 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">
// Use complete cell as highlight region
mxConstants.ACTIVE_REGION = 1;
// Program starts here. Creates a sample graph in the dynamically
// created DOM node called container which is created below.
function main()
{
// Checks if 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
{
var container = document.createElement('div');
container.style.position = 'absolute';
container.style.overflow = 'hidden';
container.style.left = '0px';
container.style.top = '0px';
container.style.right = '0px';
container.style.bottom = '0px';
container.style.background = 'url("editors/images/grid.gif")';
// Workaround for Internet Explorer ignoring certain styles
if (mxClient.IS_QUIRKS)
{
document.body.style.overflow = 'hidden';
new mxDivResizer(container);
}
document.body.appendChild(container);
// Creates the graph inside the given container
var graph = new mxGraph(container);
graph.setEnabled(false);
// Highlights offpage connectors
var highlight = new mxCellTracker(graph, null, function(me)
{
var cell = me.getCell();
if (cell != null &&
cell.value != null &&
typeof(cell.value.create) == 'function')
{
return cell;
}
return null;
});
// Handles clicks on offpage connectors and
// executes function in user object
graph.addListener(mxEvent.CLICK, function(source, evt)
{
var cell = evt.getProperty('cell');
if (cell != null &&
cell.value != null &&
typeof(cell.value.create) == 'function')
{
cell.value.create();
}
});
// Handles clicks on offpage connectors and
// executes function in user object
graph.getCursorForCell = function(cell)
{
if (cell != null &&
cell.value != null &&
typeof(cell.value.create) == 'function')
{
return 'pointer';
}
};
// Gets the default parent for inserting new cells. This
// is normally the first child of the root (ie. layer 0).
var first = null;
var second = null;
first = function()
{
var value = {toString: function() { return 'Next'; }, create: second};
// Adds cells to the model in a single step
graph.getModel().beginUpdate();
try
{
graph.getModel().setRoot(graph.getModel().createRoot());
var parent = graph.getDefaultParent();
var v1 = graph.insertVertex(parent, null, 'Click', 30, 20, 80, 30, 'fillColor=#FFFF88;strokeColor=#FF1A00');
var v2 = graph.insertVertex(parent, null, 'Next', 20, 150, 100, 30, 'fillColor=#FFFF88;strokeColor=#FF1A00');
var v3 = graph.insertVertex(parent, null, value, 200, 150, 40, 40, 'shape=triangle;align=left;fillColor=#C3D9FF;strokeColor=#4096EE');
var e1 = graph.insertEdge(parent, null, null, v1, v2, 'strokeColor=#FF1A00');
}
finally
{
// Updates the display
graph.getModel().endUpdate();
}
};
second = function()
{
var value = {toString: function() { return 'Prev'; }, create: first};
// Adds cells to the model in a single step
graph.getModel().beginUpdate();
try
{
graph.getModel().setRoot(graph.getModel().createRoot());
var parent = graph.getDefaultParent();
var v1 = graph.insertVertex(parent, null, 'Click', 30, 20, 80, 30, 'fillColor=#CDEB8B;strokeColor=#008C00');
var v2 = graph.insertVertex(parent, null, 'Prev', 220, 20, 100, 30, 'fillColor=#CDEB8B;strokeColor=#008C00');
var v3 = graph.insertVertex(parent, null, value, 30, 150, 40, 40, 'shape=triangle;align=right;fillColor=#C3D9FF;strokeColor=#4096EE;direction=west');
var e1 = graph.insertEdge(parent, null, null, v1, v2, 'strokeColor=#008C00');
}
finally
{
// Updates the display
graph.getModel().endUpdate();
}
};
first();
}
};
</script>
</head>
<!-- Calls the main function after the page has loaded. Container is dynamically created. -->
<body onload="main();">
</body>
</html>