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<!--
Copyright (c) 2006-2013, JGraph Ltd
Folding example for mxGraph. This example demonstrates
using a layout to implement a nested group structure.
-->
<html>
<head>
<title>Folding 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
{
// Enables crisp rendering of rectangles in SVG
mxConstants.ENTITY_SEGMENT = 20;
// Creates the graph inside the given container
var graph = new mxGraph(container);
graph.setDropEnabled(true);
// Disables global features
graph.collapseToPreferredSize = false;
graph.constrainChildren = false;
graph.cellsSelectable = false;
graph.extendParentsOnAdd = false;
graph.extendParents = false;
graph.border = 10;
// Sets global styles
var style = graph.getStylesheet().getDefaultEdgeStyle();
style[mxConstants.STYLE_EDGE] = mxEdgeStyle.EntityRelation;
style[mxConstants.STYLE_ROUNDED] = true;
style = graph.getStylesheet().getDefaultVertexStyle();
style[mxConstants.STYLE_FILLCOLOR] = '#ffffff';
style[mxConstants.STYLE_SHAPE] = 'swimlane';
style[mxConstants.STYLE_STARTSIZE] = 30;
style = [];
style[mxConstants.STYLE_SHAPE] = mxConstants.SHAPE_RECTANGLE;
style[mxConstants.STYLE_STROKECOLOR] = 'none';
style[mxConstants.STYLE_FILLCOLOR] = 'none';
style[mxConstants.STYLE_FOLDABLE] = false;
graph.getStylesheet().putCellStyle('column', style);
// Installs auto layout for all levels
var layout = new mxStackLayout(graph, true);
layout.border = graph.border;
var layoutMgr = new mxLayoutManager(graph);
layoutMgr.getLayout = function(cell)
{
if (!cell.collapsed)
{
if (cell.parent != graph.model.root)
{
layout.resizeParent = true;
layout.horizontal = false;
layout.spacing = 10;
}
else
{
layout.resizeParent = true;
layout.horizontal = true;
layout.spacing = 40;
}
return layout;
}
return null;
};
// Resizes the container
graph.setResizeContainer(true);
// 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 col1 = graph.insertVertex(parent, null, '', 0, 0, 120, 0, 'column');
var v1 = graph.insertVertex(col1, null, '1', 0, 0, 100, 30);
v1.collapsed = true;
var v11 = graph.insertVertex(v1, null, '1.1', 0, 0, 80, 30);
v11.collapsed = true;
var v111 = graph.insertVertex(v11, null, '1.1.1', 0, 0, 60, 30);
var v112 = graph.insertVertex(v11, null, '1.1.2', 0, 0, 60, 30);
var v12 = graph.insertVertex(v1, null, '1.2', 0, 0, 80, 30);
var col2 = graph.insertVertex(parent, null, '', 0, 0, 120, 0, 'column');
var v2 = graph.insertVertex(col2, null, '2', 0, 0, 100, 30);
v2.collapsed = true;
var v21 = graph.insertVertex(v2, null, '2.1', 0, 0, 80, 30);
v21.collapsed = true;
var v211 = graph.insertVertex(v21, null, '2.1.1', 0, 0, 60, 30);
var v212 = graph.insertVertex(v21, null, '2.1.2', 0, 0, 60, 30);
var v22 = graph.insertVertex(v2, null, '2.2', 0, 0, 80, 30);
var v3 = graph.insertVertex(col2, null, '3', 0, 0, 100, 30);
v3.collapsed = true;
var v31 = graph.insertVertex(v3, null, '3.1', 0, 0, 80, 30);
v31.collapsed = true;
var v311 = graph.insertVertex(v31, null, '3.1.1', 0, 0, 60, 30);
var v312 = graph.insertVertex(v31, null, '3.1.2', 0, 0, 60, 30);
var v32 = graph.insertVertex(v3, null, '3.2', 0, 0, 80, 30);
graph.insertEdge(parent, null, '', v111, v211);
graph.insertEdge(parent, null, '', v112, v212);
graph.insertEdge(parent, null, '', v112, v22);
graph.insertEdge(parent, null, '', v12, v311);
graph.insertEdge(parent, null, '', v12, v312);
graph.insertEdge(parent, null, '', v12, v32);
}
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>