js画图开发库-mxgraph-[validation-印证.html] _HTML/CSS

js画图开发库--mxgraph--[validation-验证.html]
?js画图开发库--mxgraph--[validation-验证.html]?
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<!Doctype html>
<html xmlns=http://www.w3.org/1999/xhtml>
	<head>
	<meta http-equiv=Content-Type content="text/html;charset=utf-8">
	<title>验证</title>

	<!-- 如果本文件的包与src不是在同一个目录,就要将basepath设置到src目录下 -->
	<script type="text/javascript">
		mxBasePath = '../src';
	</script>

	<!-- 引入支持库文件 -->
	<script type="text/javascript" src="../src/js/mxClient.js"></script>
	
	<!-- 示例代码 -->
	<script type="text/javascript">
		//  程序在此方法中启动 
		function main(container)
		{
			// 检测浏览器兼容性
			if (!mxClient.isBrowserSupported())
			{
				mxUtils.error('Browser is not supported!', 200, false);
			}
			else
			{
				var xmlDocument = mxUtils.createXmlDocument();
				var sourceNode = xmlDocument.createElement('Source');
				var targetNode = xmlDocument.createElement('Target');
				var subtargetNode = xmlDocument.createElement('Subtarget');
				
				// 在容器中创建图形
				var graph = new mxGraph(container);
				graph.setConnectable(true);
				graph.setTooltips(true);
				graph.setAllowDanglingEdges(false);
				graph.setMultigraph(false);

				// 源节点需要1、2个连接的目标
				graph.multiplicities.push(new mxMultiplicity(
				   true, 'Source', null, null, 1, 2, ['Target'],
				   'Source Must Have 1 or 2 Targets',
				   'Source Must Connect to Target'));

				// 源节点不希望任何传入的连接
				graph.multiplicities.push(new mxMultiplicity(
				   false, 'Source', null, null, 0, 0, null,
				   'Source Must Have No Incoming Edge',
				   null)); // Type does not matter

				// 目标需要一个传入的连接
				graph.multiplicities.push(new mxMultiplicity(
				   false, 'Target', null, null, 1, 1, ['Source'],
				   'Target Must Have 1 Source',
				   'Target Must Connect From Source'));
				
				// 使用默认下拉菜单
				new mxRubberband(graph);

				// 按下[删除]时，删除单元格
				var keyHandler = new mxKeyHandler(graph);
				keyHandler.bindKey(46, function(evt)
				{
					if (graph.isEnabled())
					{
						graph.removeCells();
					}
				});

				// 自动验证（如果你使用的是mxEditor实例，使用editor.validation= true）
				var listener = function(sender, evt)
				{
					graph.validateGraph();
				};
				
				graph.getModel().addListener(mxEvent.CHANGE, listener);
				
				// 创建默认端口
				var parent = graph.getDefaultParent();
								
				// 开始更新事务
				graph.getModel().beginUpdate();
				try
				{
					var v1 = graph.insertVertex(parent, null, sourceNode, 20, 20, 80, 30);
					var v2 = graph.insertVertex(parent, null, targetNode, 200, 20, 80, 30);
					var v3 = graph.insertVertex(parent, null, targetNode.cloneNode(true), 200, 80, 80, 30);
					var v4 = graph.insertVertex(parent, null, targetNode.cloneNode(true), 200, 140, 80, 30);
					var v5 = graph.insertVertex(parent, null, subtargetNode, 200, 200, 80, 30);
					var v6 = graph.insertVertex(parent, null, sourceNode.cloneNode(true), 20, 140, 80, 30);
					var e1 = graph.insertEdge(parent, null, '', v1, v2);
					var e2 = graph.insertEdge(parent, null, '', v1, v3);
					var e3 = graph.insertEdge(parent, null, '', v6, v4);
					//var e4 = graph.insertEdge(parent, null, '', v1, v4);
				}
				finally
				{
					// 结束更新事务
					graph.getModel().endUpdate();
				}
			}
		};
	</script>
</head>

<!-- 页面载入后启动程序. -->
<body onload="main(document.getElementById('graphContainer'))">

	<!-- 创建带网格壁纸和曲线的一个容器  -->
	<div id="graphContainer"
		style="position:relative;overflow:hidden;width:321px;height:281px;background:url('editors/images/grid.gif');cursor:default;">
	</div>
</body>
</html>