123 lines
3.8 KiB
HTML
123 lines
3.8 KiB
HTML
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<!--
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Copyright (c) 2006-2013, JGraph Ltd
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Hello, World! example for mxGraph. This example demonstrates using
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the isPort hook for visually connecting to another cell.
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-->
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<html>
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<head>
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<title>Hello, World! 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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// 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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// Sets the default edge style
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var style = graph.getStylesheet().getDefaultEdgeStyle();
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style[mxConstants.STYLE_EDGE] = mxEdgeStyle.ElbowConnector;
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// Ports are not used as terminals for edges, they are
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// only used to compute the graphical connection point
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graph.isPort = function(cell)
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{
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var geo = this.getCellGeometry(cell);
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return (geo != null) ? geo.relative : false;
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};
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// Implements a tooltip that shows the actual
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// source and target of an edge
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graph.getTooltipForCell = function(cell)
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{
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if (this.model.isEdge(cell))
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{
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return this.convertValueToString(this.model.getTerminal(cell, true)) + ' => ' +
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this.convertValueToString(this.model.getTerminal(cell, false))
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}
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return mxGraph.prototype.getTooltipForCell.apply(this, arguments);
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};
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// Removes the folding icon and disables any folding
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graph.isCellFoldable = function(cell)
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{
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return false;
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};
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// Enables rubberband selection
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new mxRubberband(graph);
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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, 'Hello', 20, 80, 80, 30);
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v1.setConnectable(false);
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var v11 = graph.insertVertex(v1, null, '', 1, 1, 10, 10);
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v11.geometry.offset = new mxPoint(-5, -5);
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v11.geometry.relative = true;
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var v12 = graph.insertVertex(v1, null, '', 1, 0, 10, 10);
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v12.geometry.offset = new mxPoint(-5, -5);
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v12.geometry.relative = true;
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var v2 = graph.insertVertex(parent, null, 'World!', 200, 150, 80, 30);
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var v3 = graph.insertVertex(parent, null, 'World2', 200, 20, 80, 30);
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var e1 = graph.insertEdge(parent, null, '', v11, v2);
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var e1 = graph.insertEdge(parent, null, '', v12, v3);
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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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var button = mxUtils.button('View XML', function()
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{
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var encoder = new mxCodec();
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var node = encoder.encode(graph.getModel());
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mxUtils.popup(mxUtils.getPrettyXml(node), true);
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});
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document.body.insertBefore(button, container.nextSibling);
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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="overflow:hidden;width:321px;height:241px;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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