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mxgraph

javascript

examples

groups.html

groups.html 4.99 KB

<html>
<head>
	<title>Hello, World! example for mxGraph</title>

<script type="text/javascript">
		mxBasePath = '../src';
	</script>

<script type="text/javascript" src="../src/js/mxClient.js"></script>

<script type="text/javascript">
		// Overrides check for valid roots
		mxGraph.prototype.isValidRoot = function()
		{
			return false;
		};
		
		// Don't clear selection if multiple cells selected
		var graphHandlerMouseDown = mxGraphHandler.prototype.mouseDown;
		mxGraphHandler.prototype.mouseDown = function(sender, me)
		{
			graphHandlerMouseDown.apply(this, arguments);
	
			if (this.graph.isCellSelected(me.getCell()) && this.graph.getSelectionCount() > 1)
			{
				this.delayedSelection = false;
			}
		};
		
		// Selects descendants before children selection mode
		var graphHandlerGetInitialCellForEvent = mxGraphHandler.prototype.getInitialCellForEvent;
		mxGraphHandler.prototype.getInitialCellForEvent = function(me)
		{
			var model = this.graph.getModel();
			var psel = model.getParent(this.graph.getSelectionCell());
			var cell = graphHandlerGetInitialCellForEvent.apply(this, arguments);
			var parent = model.getParent(cell);
			
			if (psel == null || (psel != cell && psel != parent))
			{
				while (!this.graph.isCellSelected(cell) && !this.graph.isCellSelected(parent) &&
						model.isVertex(parent) && !this.graph.isValidRoot(parent))
				{
					cell = parent;
					parent = this.graph.getModel().getParent(cell);
				}
			}
			
			return cell;
		};
		
		// Selection is delayed to mouseup if child selected
		var graphHandlerIsDelayedSelection = mxGraphHandler.prototype.isDelayedSelection;
		mxGraphHandler.prototype.isDelayedSelection = function(cell)
		{
			var result = graphHandlerIsDelayedSelection.apply(this, arguments);
			var model = this.graph.getModel();
			var psel = model.getParent(this.graph.getSelectionCell());
			var parent = model.getParent(cell);
			
			if (psel == null || (psel != cell && psel != parent))
			{
				if (!this.graph.isCellSelected(cell) && model.isVertex(parent) && !this.graph.isValidRoot(parent))
				{
					result = true;
				}
			}
			
			return result;
		};
		
		// Delayed selection of parent group
		mxGraphHandler.prototype.selectDelayed = function(me)
		{
			var cell = me.getCell();
			
			if (cell == null)
			{
				cell = this.cell;
			}
			
			var model = this.graph.getModel();
			var parent = model.getParent(cell);
			
			while (this.graph.isCellSelected(cell) && model.isVertex(parent) && !this.graph.isValidRoot(parent))
			{
				cell = parent;
				parent = model.getParent(cell);
			}
			
			this.graph.selectCellForEvent(cell, me.getEvent());
		};
	
		// Returns last selected ancestor
		mxPopupMenuHandler.prototype.getCellForPopupEvent = function(me)
		{
			var cell = me.getCell();
			var model = this.graph.getModel();
			var parent = model.getParent(cell);
			
			while (model.isVertex(parent) && !this.graph.isValidRoot(parent))
			{
				if (this.graph.isCellSelected(parent))
				{
					cell = parent;
				}
				
				parent = model.getParent(parent);
			}
			
			return cell;
		};
	
		// 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);
				graph.constrainChildren = false;
				graph.extendParents = false;
				graph.extendParentsOnAdd = false;

// Uncomment the following if you want the container
				// to fit the size of the graph
				//graph.setResizeContainer(true);
				
				// 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();
								
				// Adds cells to the model in a single step
				graph.getModel().beginUpdate();
				try
				{
					var v1 = graph.insertVertex(parent, null, 'Hello,', 20, 20, 120, 60);
					var v2 = graph.insertVertex(v1, null, 'World!', 90, 20, 60, 20);
				}
				finally
				{
					// Updates the display
					graph.getModel().endUpdate();
				}
			}
		};
	</script>
</head>

<body onload="main(document.getElementById('graphContainer'))">

<div id="graphContainer"
		style="overflow:hidden;width:321px;height:241px;background:url('editors/images/grid.gif');cursor:default;">
	</div>
</body>
</html>

一键复制编辑原始数据按行查看历史

Gaudenz Alder 提交于 2014年10月03日 20:49 +08:00 . 3.1.0.0 release

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<!--
 Copyright (c) 2006-2013, JGraph Ltd

 Groups example for mxGraph. This example demonstrates using
 cells as parts of other cells.
-->
<html>
<head>
	<title>Hello, World! 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">
		// Overrides check for valid roots
		mxGraph.prototype.isValidRoot = function()
		{
			return false;
		};
		
		// Don't clear selection if multiple cells selected
		var graphHandlerMouseDown = mxGraphHandler.prototype.mouseDown;
		mxGraphHandler.prototype.mouseDown = function(sender, me)
		{
			graphHandlerMouseDown.apply(this, arguments);
	
			if (this.graph.isCellSelected(me.getCell()) && this.graph.getSelectionCount() > 1)
			{
				this.delayedSelection = false;
			}
		};
		
		// Selects descendants before children selection mode
		var graphHandlerGetInitialCellForEvent = mxGraphHandler.prototype.getInitialCellForEvent;
		mxGraphHandler.prototype.getInitialCellForEvent = function(me)
		{
			var model = this.graph.getModel();
			var psel = model.getParent(this.graph.getSelectionCell());
			var cell = graphHandlerGetInitialCellForEvent.apply(this, arguments);
			var parent = model.getParent(cell);
			
			if (psel == null || (psel != cell && psel != parent))
			{
				while (!this.graph.isCellSelected(cell) && !this.graph.isCellSelected(parent) &&
						model.isVertex(parent) && !this.graph.isValidRoot(parent))
				{
					cell = parent;
					parent = this.graph.getModel().getParent(cell);
				}
			}
			
			return cell;
		};
		
		// Selection is delayed to mouseup if child selected
		var graphHandlerIsDelayedSelection = mxGraphHandler.prototype.isDelayedSelection;
		mxGraphHandler.prototype.isDelayedSelection = function(cell)
		{
			var result = graphHandlerIsDelayedSelection.apply(this, arguments);
			var model = this.graph.getModel();
			var psel = model.getParent(this.graph.getSelectionCell());
			var parent = model.getParent(cell);
			
			if (psel == null || (psel != cell && psel != parent))
			{
				if (!this.graph.isCellSelected(cell) && model.isVertex(parent) && !this.graph.isValidRoot(parent))
				{
					result = true;
				}
			}
			
			return result;
		};
		
		// Delayed selection of parent group
		mxGraphHandler.prototype.selectDelayed = function(me)
		{
			var cell = me.getCell();
			
			if (cell == null)
			{
				cell = this.cell;
			}
			
			var model = this.graph.getModel();
			var parent = model.getParent(cell);
			
			while (this.graph.isCellSelected(cell) && model.isVertex(parent) && !this.graph.isValidRoot(parent))
			{
				cell = parent;
				parent = model.getParent(cell);
			}
			
			this.graph.selectCellForEvent(cell, me.getEvent());
		};
	
		// Returns last selected ancestor
		mxPopupMenuHandler.prototype.getCellForPopupEvent = function(me)
		{
			var cell = me.getCell();
			var model = this.graph.getModel();
			var parent = model.getParent(cell);
			
			while (model.isVertex(parent) && !this.graph.isValidRoot(parent))
			{
				if (this.graph.isCellSelected(parent))
				{
					cell = parent;
				}
				
				parent = model.getParent(parent);
			}
			
			return cell;
		};
	
		// 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);
				graph.constrainChildren = false;
				graph.extendParents = false;
				graph.extendParentsOnAdd = false;

				// Uncomment the following if you want the container
				// to fit the size of the graph
				//graph.setResizeContainer(true);
				
				// 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();
								
				// Adds cells to the model in a single step
				graph.getModel().beginUpdate();
				try
				{
					var v1 = graph.insertVertex(parent, null, 'Hello,', 20, 20, 120, 60);
					var v2 = graph.insertVertex(v1, null, 'World!', 90, 20, 60, 20);
				}
				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="overflow:hidden;width:321px;height:241px;background:url('editors/images/grid.gif');cursor:default;">
	</div>
</body>
</html>