2012-05-21 20:32:26 +00:00
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2013-04-04 11:51:15 +00:00
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$Id: permissions.html,v 1.19 2012/11/20 09:06:07 gaudenz Exp $
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2012-05-21 20:32:26 +00:00
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Copyright (c) 2006-2010, JGraph Ltd
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Hello, World! example for mxGraph. This example demonstrates creating
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permissions to define the available operations a the graph.
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-->
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<html>
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<head>
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<title>Permissions 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()
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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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// Enables crisp rendering of rectangles in SVG
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mxRectangleShape.prototype.crisp = true;
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// Defines an icon for creating new connections in the connection handler.
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// This will automatically disable the highlighting of the source vertex.
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mxConnectionHandler.prototype.connectImage = new mxImage('images/connector.gif', 16, 16);
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// Creates the div for the graph
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var container = document.createElement('div');
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container.style.position = 'absolute';
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container.style.overflow = 'hidden';
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container.style.left = '00px';
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container.style.top = '40px';
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container.style.right = '0px';
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container.style.bottom = '0px';
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container.style.background = 'url("editors/images/grid.gif")';
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document.body.appendChild(container);
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// Workaround for Internet Explorer ignoring certain styles
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2012-12-18 13:09:38 +00:00
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if (mxClient.IS_QUIRKS)
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2012-05-21 20:32:26 +00:00
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{
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2012-12-18 13:09:38 +00:00
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document.body.style.overflow = 'hidden';
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2012-05-21 20:32:26 +00:00
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new mxDivResizer(container);
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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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// Enable tooltips, disables mutligraphs, enable loops
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graph.setMultigraph(false);
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graph.setAllowLoops(true);
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// Enables rubberband selection and key handling
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var rubberband = new mxRubberband(graph);
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var keyHandler = new mxKeyHandler(graph);
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// Assigns the delete key
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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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// Shared variable between child function scopes
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// aka "private" variable
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var currentPermission = null;
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var apply = function(permission)
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{
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graph.clearSelection();
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permission.apply(graph);
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graph.setEnabled(true);
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graph.setTooltips(true);
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// Updates the icons on the shapes - rarely
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// needed and very slow for large graphs
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graph.refresh();
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currentPermission = permission;
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};
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apply(new Permission());
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var button = mxUtils.button('Allow All', function(evt)
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{
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apply(new Permission());
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});
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document.body.appendChild(button);
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var button = mxUtils.button('Connect Only', function(evt)
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{
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apply(new Permission(false, true, false, false, true));
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});
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document.body.appendChild(button);
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var button = mxUtils.button('Edges Only', function(evt)
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{
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apply(new Permission(false, false, true, false, false));
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});
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document.body.appendChild(button);
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var button = mxUtils.button('Vertices Only', function(evt)
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{
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apply(new Permission(false, false, false, true, false));
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});
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document.body.appendChild(button);
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var button = mxUtils.button('Select Only', function(evt)
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{
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apply(new Permission(false, false, false, false, false));
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});
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document.body.appendChild(button);
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var button = mxUtils.button('Locked', function(evt)
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{
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apply(new Permission(true, false));
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});
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document.body.appendChild(button);
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var button = mxUtils.button('Disabled', function(evt)
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{
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graph.clearSelection();
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graph.setEnabled(false);
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graph.setTooltips(false);
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});
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document.body.appendChild(button);
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// Extends hook functions to use permission object. This could
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// be done by assigning the respective switches (eg.
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// setMovable), but this approach is more flexible, doesn't
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// override any existing behaviour or settings, and allows for
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// dynamic conditions to be used in the functions. See the
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// specification for more functions to extend (eg.
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// isSelectable).
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var oldDisconnectable = graph.isCellDisconnectable;
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graph.isCellDisconnectable = function(cell, terminal, source)
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{
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return oldDisconnectable.apply(this, arguments) &&
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currentPermission.editEdges;
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};
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var oldTerminalPointMovable = graph.isTerminalPointMovable;
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graph.isTerminalPointMovable = function(cell)
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{
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return oldTerminalPointMovable.apply(this, arguments) &&
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currentPermission.editEdges;
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};
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var oldBendable = graph.isCellBendable;
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graph.isCellBendable = function(cell)
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{
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return oldBendable.apply(this, arguments) &&
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currentPermission.editEdges;
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};
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var oldLabelMovable = graph.isLabelMovable;
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graph.isLabelMovable = function(cell)
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{
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return oldLabelMovable.apply(this, arguments) &&
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currentPermission.editEdges;
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};
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var oldMovable = graph.isCellMovable;
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graph.isCellMovable = function(cell)
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{
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return oldMovable.apply(this, arguments) &&
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currentPermission.editVertices;
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};
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var oldResizable = graph.isCellResizable;
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graph.isCellResizable = function(cell)
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{
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return oldResizable.apply(this, arguments) &&
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currentPermission.editVertices;
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};
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var oldEditable = graph.isCellEditable;
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graph.isCellEditable = function(cell)
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{
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return oldEditable.apply(this, arguments) &&
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(this.getModel().isVertex(cell) &&
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currentPermission.editVertices) ||
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(this.getModel().isEdge(cell) &&
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currentPermission.editEdges);
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};
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var oldDeletable = graph.isCellDeletable;
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graph.isCellDeletable = function(cell)
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{
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return oldDeletable.apply(this, arguments) &&
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(this.getModel().isVertex(cell) &&
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currentPermission.editVertices) ||
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(this.getModel().isEdge(cell) &&
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currentPermission.editEdges);
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};
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var oldCloneable = graph.isCellCloneable;
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graph.isCellCloneable = function(cell)
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{
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return oldCloneable.apply(this, arguments) &&
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currentPermission.cloneCells;
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};
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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, 20, 80, 30);
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var v2 = graph.insertVertex(parent, null, 'Hello,', 200, 20, 80, 30);
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var v3 = graph.insertVertex(parent, null, 'World!', 200, 150, 80, 30);
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var e1 = graph.insertEdge(parent, null, 'Connection', v1, 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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}
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};
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function Permission(locked, createEdges, editEdges, editVertices, cloneCells)
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{
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this.locked = (locked != null) ? locked : false;
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this.createEdges = (createEdges != null) ? createEdges : true;
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this.editEdges = (editEdges != null) ? editEdges : true;;
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this.editVertices = (editVertices != null) ? editVertices : true;;
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this.cloneCells = (cloneCells != null) ? cloneCells : true;;
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};
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Permission.prototype.apply = function(graph)
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{
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graph.setConnectable(this.createEdges);
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graph.setCellsLocked(this.locked);
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};
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</script>
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</head>
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2012-07-20 10:35:30 +00:00
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<!-- Page passes the container for the graph to the program -->
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2012-05-21 20:32:26 +00:00
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<body onload="main();">
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</body>
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</html>
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