205 lines
5.9 KiB
HTML
205 lines
5.9 KiB
HTML
<!--
|
|
Copyright (c) 2006-2013, JGraph Ltd
|
|
|
|
Dragsource example for mxGraph. This example demonstrates using
|
|
one drag source for multiple graphs and changing the drag icon.
|
|
-->
|
|
<html>
|
|
<head>
|
|
<title>Dragsource 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
|
|
{
|
|
// Enables guides
|
|
mxGraphHandler.prototype.guidesEnabled = true;
|
|
|
|
// Alt disables guides
|
|
mxGuide.prototype.isEnabledForEvent = function(evt)
|
|
{
|
|
return !mxEvent.isAltDown(evt);
|
|
};
|
|
|
|
// Enables snapping waypoints to terminals
|
|
mxEdgeHandler.prototype.snapToTerminals = true;
|
|
|
|
var graphs = [];
|
|
|
|
// Creates the graph inside the given container
|
|
for (var i = 0; i < 2; i++)
|
|
{
|
|
var container = document.createElement('div');
|
|
container.style.overflow = 'hidden';
|
|
container.style.position = 'relative';
|
|
container.style.width = '321px';
|
|
container.style.height = '241px';
|
|
container.style.background = 'url(\'editors/images/grid.gif\')';
|
|
container.style.cursor = 'default';
|
|
|
|
document.body.appendChild(container);
|
|
|
|
var graph = new mxGraph(container);
|
|
graph.gridSize = 30;
|
|
|
|
// 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, 80, 30);
|
|
var v2 = graph.insertVertex(parent, null, 'World!', 200, 150, 80, 30);
|
|
var e1 = graph.insertEdge(parent, null, '', v1, v2);
|
|
}
|
|
finally
|
|
{
|
|
// Updates the display
|
|
graph.getModel().endUpdate();
|
|
}
|
|
|
|
graphs.push(graph);
|
|
}
|
|
|
|
// Returns the graph under the mouse
|
|
var graphF = function(evt)
|
|
{
|
|
var x = mxEvent.getClientX(evt);
|
|
var y = mxEvent.getClientY(evt);
|
|
var elt = document.elementFromPoint(x, y);
|
|
|
|
for (var i = 0; i < graphs.length; i++)
|
|
{
|
|
if (mxUtils.isAncestorNode(graphs[i].container, elt))
|
|
{
|
|
return graphs[i];
|
|
}
|
|
}
|
|
|
|
return null;
|
|
};
|
|
|
|
// Inserts a cell at the given location
|
|
var funct = function(graph, evt, target, x, y)
|
|
{
|
|
var cell = new mxCell('Test', new mxGeometry(0, 0, 120, 40));
|
|
cell.vertex = true;
|
|
var cells = graph.importCells([cell], x, y, target);
|
|
|
|
if (cells != null && cells.length > 0)
|
|
{
|
|
graph.scrollCellToVisible(cells[0]);
|
|
graph.setSelectionCells(cells);
|
|
}
|
|
};
|
|
|
|
// Creates a DOM node that acts as the drag source
|
|
var img = mxUtils.createImage('images/icons48/gear.png');
|
|
img.style.width = '48px';
|
|
img.style.height = '48px';
|
|
document.body.appendChild(img);
|
|
|
|
// Disables built-in DnD in IE (this is needed for cross-frame DnD, see below)
|
|
if (mxClient.IS_IE)
|
|
{
|
|
mxEvent.addListener(img, 'dragstart', function(evt)
|
|
{
|
|
evt.returnValue = false;
|
|
});
|
|
}
|
|
|
|
// Creates the element that is being for the actual preview.
|
|
var dragElt = document.createElement('div');
|
|
dragElt.style.border = 'dashed black 1px';
|
|
dragElt.style.width = '120px';
|
|
dragElt.style.height = '40px';
|
|
|
|
// Drag source is configured to use dragElt for preview and as drag icon
|
|
// if scalePreview (last) argument is true. Dx and dy are null to force
|
|
// the use of the defaults. Note that dx and dy are only used for the
|
|
// drag icon but not for the preview.
|
|
var ds = mxUtils.makeDraggable(img, graphF, funct, dragElt, null, null, graph.autoscroll, true);
|
|
|
|
// Redirects feature to global switch. Note that this feature should only be used
|
|
// if the the x and y arguments are used in funct to insert the cell.
|
|
ds.isGuidesEnabled = function()
|
|
{
|
|
return graph.graphHandler.guidesEnabled;
|
|
};
|
|
|
|
// Restores original drag icon while outside of graph
|
|
ds.createDragElement = mxDragSource.prototype.createDragElement;
|
|
}
|
|
};
|
|
|
|
// NOTE: To enable cross-document DnD (eg. between frames),
|
|
// the following methods need to be overridden:
|
|
/*mxDragSourceMouseUp = mxDragSource.prototype.mouseUp;
|
|
mxDragSource.prototype.mouseUp = function(evt)
|
|
{
|
|
var doc = this.element.ownerDocument;
|
|
|
|
if (doc != document)
|
|
{
|
|
var mu = (mxClient.IS_TOUCH) ? 'touchend' : 'mouseup';
|
|
|
|
if (this.mouseUpHandler != null)
|
|
{
|
|
mxEvent.removeListener(doc, mu, this.mouseUpHandler);
|
|
}
|
|
}
|
|
|
|
mxDragSourceMouseUp.apply(this, arguments);
|
|
};*/
|
|
|
|
/*mxDragSourceMouseDown = mxDragSource.prototype.mouseDown;
|
|
mxDragSource.prototype.mouseDown = function(evt)
|
|
{
|
|
if (this.enabled && !mxEvent.isConsumed(evt))
|
|
{
|
|
mxDragSourceMouseDown.apply(this, arguments);
|
|
var doc = this.element.ownerDocument;
|
|
|
|
if (doc != document)
|
|
{
|
|
var mu = (mxClient.IS_TOUCH) ? 'touchend' : 'mouseup';
|
|
mxEvent.addListener(doc, mu, this.mouseUpHandler);
|
|
}
|
|
}
|
|
};*/
|
|
</script>
|
|
</head>
|
|
|
|
<!-- Page passes the container for the graph to the program -->
|
|
<body onload="main();">
|
|
</body>
|
|
</html>
|