124 lines
4.1 KiB
HTML
124 lines
4.1 KiB
HTML
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<!--
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Copyright (c) 2006-2013, JGraph Ltd
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Validation example for mxGraph. This example demonstrates using
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multiplicities for automatically validating a graph.
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-->
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<html>
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<head>
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<title>Validation example for mxGraph</title>
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<!-- Sets the basepath for the library if not in same directory -->
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<script type="text/javascript">
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mxBasePath = '../src';
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</script>
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<!-- Loads and initializes the library -->
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<script type="text/javascript" src="../src/js/mxClient.js"></script>
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<!-- Example code -->
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<script type="text/javascript">
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// Program starts here. Creates a sample graph in the
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// DOM node with the specified ID. This function is invoked
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// from the onLoad event handler of the document (see below).
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function main(container)
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{
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// Checks if the browser is supported
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if (!mxClient.isBrowserSupported())
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{
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// Displays an error message if the browser is not supported.
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mxUtils.error('Browser is not supported!', 200, false);
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}
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else
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{
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var xmlDocument = mxUtils.createXmlDocument();
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var sourceNode = xmlDocument.createElement('Source');
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var targetNode = xmlDocument.createElement('Target');
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var subtargetNode = xmlDocument.createElement('Subtarget');
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// Creates the graph inside the given container
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var graph = new mxGraph(container);
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graph.setConnectable(true);
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graph.setTooltips(true);
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graph.setAllowDanglingEdges(false);
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graph.setMultigraph(false);
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// Source nodes needs 1..2 connected Targets
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graph.multiplicities.push(new mxMultiplicity(
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true, 'Source', null, null, 1, 2, ['Target'],
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'Source Must Have 1 or 2 Targets',
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'Source Must Connect to Target'));
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// Source node does not want any incoming connections
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graph.multiplicities.push(new mxMultiplicity(
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false, 'Source', null, null, 0, 0, null,
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'Source Must Have No Incoming Edge',
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null)); // Type does not matter
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// Target needs exactly one incoming connection from Source
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graph.multiplicities.push(new mxMultiplicity(
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false, 'Target', null, null, 1, 1, ['Source'],
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'Target Must Have 1 Source',
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'Target Must Connect From Source'));
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// Enables rubberband selection
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new mxRubberband(graph);
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// Removes cells when [DELETE] is pressed
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var keyHandler = new mxKeyHandler(graph);
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keyHandler.bindKey(46, function(evt)
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{
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if (graph.isEnabled())
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{
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graph.removeCells();
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}
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});
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// Installs automatic validation (use editor.validation = true
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// if you are using an mxEditor instance)
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var listener = function(sender, evt)
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{
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graph.validateGraph();
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};
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graph.getModel().addListener(mxEvent.CHANGE, listener);
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// Gets the default parent for inserting new cells. This
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// is normally the first child of the root (ie. layer 0).
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var parent = graph.getDefaultParent();
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// Adds cells to the model in a single step
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graph.getModel().beginUpdate();
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try
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{
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var v1 = graph.insertVertex(parent, null, sourceNode, 20, 20, 80, 30);
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var v2 = graph.insertVertex(parent, null, targetNode, 200, 20, 80, 30);
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var v3 = graph.insertVertex(parent, null, targetNode.cloneNode(true), 200, 80, 80, 30);
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var v4 = graph.insertVertex(parent, null, targetNode.cloneNode(true), 200, 140, 80, 30);
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var v5 = graph.insertVertex(parent, null, subtargetNode, 200, 200, 80, 30);
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var v6 = graph.insertVertex(parent, null, sourceNode.cloneNode(true), 20, 140, 80, 30);
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var e1 = graph.insertEdge(parent, null, '', v1, v2);
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var e2 = graph.insertEdge(parent, null, '', v1, v3);
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var e3 = graph.insertEdge(parent, null, '', v6, v4);
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//var e4 = graph.insertEdge(parent, null, '', v1, v4);
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}
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finally
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{
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// Updates the display
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graph.getModel().endUpdate();
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}
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}
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};
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</script>
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</head>
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<!-- Page passes the container for the graph to the program -->
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<body onload="main(document.getElementById('graphContainer'))">
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<!-- Creates a container for the graph with a grid wallpaper -->
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<div id="graphContainer"
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style="position:relative;overflow:hidden;width:321px;height:281px;background:url('editors/images/grid.gif');cursor:default;">
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</div>
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</body>
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</html>
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