javascript/examples/permissions.html · opendsl/mxgraph

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mxgraph

javascript

examples

permissions.html

permissions.html 7.74 KB

<html>
<head>
	<title>Permissions 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">
		// 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()
		{
			// 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
			{
				// Defines an icon for creating new connections in the connection handler.
				// This will automatically disable the highlighting of the source vertex.
				mxConnectionHandler.prototype.connectImage = new mxImage('images/connector.gif', 16, 16);
			
				// Creates the div for the graph
				var container = document.createElement('div');
				container.style.position = 'absolute';
				container.style.overflow = 'hidden';
				container.style.left = '00px';
				container.style.top = '40px';
				container.style.right = '0px';
				container.style.bottom = '0px';
				container.style.background = 'url("editors/images/grid.gif")';
				
				document.body.appendChild(container);
				
				// Workaround for Internet Explorer ignoring certain styles
				if (mxClient.IS_QUIRKS)
				{
					document.body.style.overflow = 'hidden';
					new mxDivResizer(container);
				}
				
				// Creates the graph inside the given container
				var graph = new mxGraph(container);
				
				// Enable tooltips, disables mutligraphs, enable loops
				graph.setMultigraph(false);
				graph.setAllowLoops(true);

// Enables rubberband selection and key handling
				var rubberband = new mxRubberband(graph);
				var keyHandler = new mxKeyHandler(graph);
				
				// Assigns the delete key
				keyHandler.bindKey(46, function(evt)
				{
					if (graph.isEnabled())
					{
						graph.removeCells();
					}
				});
				
				// Shared variable between child function scopes
				// aka "private" variable
				var currentPermission = null;
				
				var apply = function(permission)
				{
					graph.clearSelection();
					permission.apply(graph);
					graph.setEnabled(true);
					graph.setTooltips(true);
					
					// Updates the icons on the shapes - rarely
					// needed and very slow for large graphs
					graph.refresh();
					currentPermission = permission;
				};
				
				apply(new Permission());
				
				var button = mxUtils.button('Allow All', function(evt)
				{
					apply(new Permission());
				});
				document.body.appendChild(button);
												
				var button = mxUtils.button('Connect Only', function(evt)
				{
					apply(new Permission(false, true, false, false, true));
				});
				document.body.appendChild(button);
								
				var button = mxUtils.button('Edges Only', function(evt)
				{
					apply(new Permission(false, false, true, false, false));
				});
				document.body.appendChild(button);
								
				var button = mxUtils.button('Vertices Only', function(evt)
				{
					apply(new Permission(false, false, false, true, false));
				});
				document.body.appendChild(button);
				
				var button = mxUtils.button('Select Only', function(evt)
				{
					apply(new Permission(false, false, false, false, false));
				});
				document.body.appendChild(button);
				
				var button = mxUtils.button('Locked', function(evt)
				{
					apply(new Permission(true, false));
				});
				document.body.appendChild(button);
								
				var button = mxUtils.button('Disabled', function(evt)
				{
					graph.clearSelection();
					graph.setEnabled(false);
					graph.setTooltips(false);
				});
				document.body.appendChild(button);
				
				// Extends hook functions to use permission object. This could
				// be done by assigning the respective switches (eg.
				// setMovable), but this approach is more flexible, doesn't
				// override any existing behaviour or settings, and allows for
				// dynamic conditions to be used in the functions. See the
				// specification for more functions to extend (eg.
				// isSelectable).
				var oldDisconnectable = graph.isCellDisconnectable;
				graph.isCellDisconnectable = function(cell, terminal, source)
				{
					return oldDisconnectable.apply(this, arguments) &&
						currentPermission.editEdges;
				};
				
				var oldTerminalPointMovable = graph.isTerminalPointMovable;
				graph.isTerminalPointMovable = function(cell)
				{
					return oldTerminalPointMovable.apply(this, arguments) &&
						currentPermission.editEdges;
				};
				
				var oldBendable = graph.isCellBendable;
				graph.isCellBendable = function(cell)
				{
					return oldBendable.apply(this, arguments) &&
						currentPermission.editEdges;
				};
				
				var oldLabelMovable = graph.isLabelMovable;
				graph.isLabelMovable = function(cell)
				{
					return oldLabelMovable.apply(this, arguments) &&
						currentPermission.editEdges;
				};
				
				var oldMovable = graph.isCellMovable;
				graph.isCellMovable = function(cell)
				{
					return oldMovable.apply(this, arguments) &&
						currentPermission.editVertices;
				};
				
				var oldResizable = graph.isCellResizable;
				graph.isCellResizable = function(cell)
				{
					return oldResizable.apply(this, arguments) &&
						currentPermission.editVertices;
				};
								
				var oldEditable = graph.isCellEditable;
				graph.isCellEditable = function(cell)
				{
					return oldEditable.apply(this, arguments) &&
						(this.getModel().isVertex(cell) &&
						currentPermission.editVertices) ||
						(this.getModel().isEdge(cell) &&
						currentPermission.editEdges);
				};
				
				var oldDeletable = graph.isCellDeletable;
				graph.isCellDeletable = function(cell)
				{
					return oldDeletable.apply(this, arguments) &&
						(this.getModel().isVertex(cell) &&
						currentPermission.editVertices) ||
						(this.getModel().isEdge(cell) &&
						currentPermission.editEdges);
				};
				
				var oldCloneable = graph.isCellCloneable;
				graph.isCellCloneable = function(cell)
				{
					return oldCloneable.apply(this, arguments) &&
						currentPermission.cloneCells;
				};
				
				// 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, 80, 30);
					var v2 = graph.insertVertex(parent, null, 'Hello,', 200, 20, 80, 30);
					var v3 = graph.insertVertex(parent, null, 'World!', 200, 150, 80, 30);
					var e1 = graph.insertEdge(parent, null, 'Connection', v1, v3);
				}
				finally
				{
					// Updates the display
					graph.getModel().endUpdate();
				}
			}
		};
		
		function Permission(locked, createEdges, editEdges, editVertices, cloneCells)
		{
			this.locked = (locked != null) ? locked : false;
			this.createEdges = (createEdges != null) ? createEdges : true;
			this.editEdges = (editEdges != null) ? editEdges : true;;
			this.editVertices = (editVertices != null) ? editVertices : true;;
			this.cloneCells = (cloneCells != null) ? cloneCells : true;;
		};
		
		Permission.prototype.apply = function(graph)
		{
			graph.setConnectable(this.createEdges);
			graph.setCellsLocked(this.locked);
		};
	</script>
</head>

<body onload="main();">
</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

 Hello, World! example for mxGraph. This example demonstrates creating
 permissions to define the available operations a the graph.
-->
<html>
<head>
	<title>Permissions 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()
		{
			// 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
			{
				// Defines an icon for creating new connections in the connection handler.
				// This will automatically disable the highlighting of the source vertex.
				mxConnectionHandler.prototype.connectImage = new mxImage('images/connector.gif', 16, 16);
			
				// Creates the div for the graph
				var container = document.createElement('div');
				container.style.position = 'absolute';
				container.style.overflow = 'hidden';
				container.style.left = '00px';
				container.style.top = '40px';
				container.style.right = '0px';
				container.style.bottom = '0px';
				container.style.background = 'url("editors/images/grid.gif")';
				
				document.body.appendChild(container);
				
				// Workaround for Internet Explorer ignoring certain styles
				if (mxClient.IS_QUIRKS)
				{
					document.body.style.overflow = 'hidden';
					new mxDivResizer(container);
				}
				
				// Creates the graph inside the given container
				var graph = new mxGraph(container);
				
				// Enable tooltips, disables mutligraphs, enable loops
				graph.setMultigraph(false);
				graph.setAllowLoops(true);

				// Enables rubberband selection and key handling
				var rubberband = new mxRubberband(graph);
				var keyHandler = new mxKeyHandler(graph);
				
				// Assigns the delete key
				keyHandler.bindKey(46, function(evt)
				{
					if (graph.isEnabled())
					{
						graph.removeCells();
					}
				});
				
				// Shared variable between child function scopes
				// aka "private" variable
				var currentPermission = null;
				
				var apply = function(permission)
				{
					graph.clearSelection();
					permission.apply(graph);
					graph.setEnabled(true);
					graph.setTooltips(true);
					
					// Updates the icons on the shapes - rarely
					// needed and very slow for large graphs
					graph.refresh();
					currentPermission = permission;
				};
				
				apply(new Permission());
				
				var button = mxUtils.button('Allow All', function(evt)
				{
					apply(new Permission());
				});
				document.body.appendChild(button);
												
				var button = mxUtils.button('Connect Only', function(evt)
				{
					apply(new Permission(false, true, false, false, true));
				});
				document.body.appendChild(button);
								
				var button = mxUtils.button('Edges Only', function(evt)
				{
					apply(new Permission(false, false, true, false, false));
				});
				document.body.appendChild(button);
								
				var button = mxUtils.button('Vertices Only', function(evt)
				{
					apply(new Permission(false, false, false, true, false));
				});
				document.body.appendChild(button);
				
				var button = mxUtils.button('Select Only', function(evt)
				{
					apply(new Permission(false, false, false, false, false));
				});
				document.body.appendChild(button);
				
				var button = mxUtils.button('Locked', function(evt)
				{
					apply(new Permission(true, false));
				});
				document.body.appendChild(button);
								
				var button = mxUtils.button('Disabled', function(evt)
				{
					graph.clearSelection();
					graph.setEnabled(false);
					graph.setTooltips(false);
				});
				document.body.appendChild(button);
				
				// Extends hook functions to use permission object. This could
				// be done by assigning the respective switches (eg.
				// setMovable), but this approach is more flexible, doesn't
				// override any existing behaviour or settings, and allows for
				// dynamic conditions to be used in the functions. See the
				// specification for more functions to extend (eg.
				// isSelectable).
				var oldDisconnectable = graph.isCellDisconnectable;
				graph.isCellDisconnectable = function(cell, terminal, source)
				{
					return oldDisconnectable.apply(this, arguments) &&
						currentPermission.editEdges;
				};
				
				var oldTerminalPointMovable = graph.isTerminalPointMovable;
				graph.isTerminalPointMovable = function(cell)
				{
					return oldTerminalPointMovable.apply(this, arguments) &&
						currentPermission.editEdges;
				};
				
				var oldBendable = graph.isCellBendable;
				graph.isCellBendable = function(cell)
				{
					return oldBendable.apply(this, arguments) &&
						currentPermission.editEdges;
				};
				
				var oldLabelMovable = graph.isLabelMovable;
				graph.isLabelMovable = function(cell)
				{
					return oldLabelMovable.apply(this, arguments) &&
						currentPermission.editEdges;
				};
				
				var oldMovable = graph.isCellMovable;
				graph.isCellMovable = function(cell)
				{
					return oldMovable.apply(this, arguments) &&
						currentPermission.editVertices;
				};
				
				var oldResizable = graph.isCellResizable;
				graph.isCellResizable = function(cell)
				{
					return oldResizable.apply(this, arguments) &&
						currentPermission.editVertices;
				};
								
				var oldEditable = graph.isCellEditable;
				graph.isCellEditable = function(cell)
				{
					return oldEditable.apply(this, arguments) &&
						(this.getModel().isVertex(cell) &&
						currentPermission.editVertices) ||
						(this.getModel().isEdge(cell) &&
						currentPermission.editEdges);
				};
				
				var oldDeletable = graph.isCellDeletable;
				graph.isCellDeletable = function(cell)
				{
					return oldDeletable.apply(this, arguments) &&
						(this.getModel().isVertex(cell) &&
						currentPermission.editVertices) ||
						(this.getModel().isEdge(cell) &&
						currentPermission.editEdges);
				};
				
				var oldCloneable = graph.isCellCloneable;
				graph.isCellCloneable = function(cell)
				{
					return oldCloneable.apply(this, arguments) &&
						currentPermission.cloneCells;
				};
				
				// 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, 80, 30);
					var v2 = graph.insertVertex(parent, null, 'Hello,', 200, 20, 80, 30);
					var v3 = graph.insertVertex(parent, null, 'World!', 200, 150, 80, 30);
					var e1 = graph.insertEdge(parent, null, 'Connection', v1, v3);
				}
				finally
				{
					// Updates the display
					graph.getModel().endUpdate();
				}
			}
		};
		
		function Permission(locked, createEdges, editEdges, editVertices, cloneCells)
		{
			this.locked = (locked != null) ? locked : false;
			this.createEdges = (createEdges != null) ? createEdges : true;
			this.editEdges = (editEdges != null) ? editEdges : true;;
			this.editVertices = (editVertices != null) ? editVertices : true;;
			this.cloneCells = (cloneCells != null) ? cloneCells : true;;
		};
		
		Permission.prototype.apply = function(graph)
		{
			graph.setConnectable(this.createEdges);
			graph.setCellsLocked(this.locked);
		};
	</script>
</head>

<!-- Page passes the container for the graph to the program -->
<body onload="main();">
</body>
</html>