<!--
Copyright (c) 2006-2013, JGraph Ltd
Visible example for mxGraph. This example demonstrates using
various solutions for hiding and showing cells.
-->
<html>
<head>
<title>Visibility 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">
// 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
{
// Creates the graph inside the given container
var graph = new mxGraph(container);
// 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();
var showOne = true;
var showTwo = true;
var showThree = true;
// Overridden to implement dynamic conditions
graph.isCellVisible = function(cell)
{
var result = mxGraph.prototype.isCellVisible.apply(this, arguments);
if (result && cell.value != null)
{
result = (showOne && cell.value == '1') ||
(showTwo && cell.value == '2') ||
(showThree && cell.value == '3');
}
return result;
};
// Adds cells to the model in a single step
var v1;
graph.getModel().beginUpdate();
try
{
v1 = graph.insertVertex(parent, null, '1', 20, 20, 80, 30);
var v2 = graph.insertVertex(parent, null, '2', 200, 150, 80, 30);
var e1 = graph.insertEdge(parent, null, '3', v1, v2);
}
finally
{
// Updates the display
graph.getModel().endUpdate();
}
// Dynamic conditions (requires refresh)
document.body.appendChild(mxUtils.button('Cond 1', function()
{
showOne = !showOne;
graph.refresh();
}));
document.body.appendChild(mxUtils.button('Cond 2', function()
{
showTwo = !showTwo;
graph.refresh();
}));
document.body.appendChild(mxUtils.button('Cond 3', function()
{
showThree = !showThree;
graph.refresh();
}));
// Explicit show/hide
document.body.appendChild(mxUtils.button('Toggle cell', function()
{
graph.toggleCells(!graph.getModel().isVisible(v1), [v1], true);
}));
// Explicit remove/add
var removed = null;
document.body.appendChild(mxUtils.button('Add/remove cell', function()
{
if (removed != null)
{
graph.addCells(removed);
removed = null;
}
else
{
removed = graph.removeCells([v1]);
}
}));
}
};
</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>