258 lines
7.7 KiB
HTML
258 lines
7.7 KiB
HTML
<!--
|
|
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>
|