2012-05-21 20:32:26 +00:00
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2013-10-28 08:56:36 +00:00
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Copyright (c) 2006-2013, JGraph Ltd
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2012-05-21 20:32:26 +00:00
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Events example for mxGraph. This example demonstrates creating
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a graph container and using the mxDivResizer to update the size,
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interaction on the graph, including marquee selection, custom
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tooltips, context menu handling and changing the default menu
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opacity. It also demonstrates how to use an edgestyle in the
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default stylesheet, and handle the doubleclick on the adjustment
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point. See also: overlays.html for click event handling.
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-->
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<html>
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<head>
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<title>Events 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 dynamically
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// created DOM node called container which is created below.
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function main()
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{
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// Sets the image to be used for creating new connections
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mxConnectionHandler.prototype.connectImage = new mxImage('images/green-dot.gif', 14, 14);
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// Checks if 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
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// 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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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 = '0px';
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container.style.top = '0px';
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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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// Disables built-in context menu
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mxEvent.disableContextMenu(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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document.body.appendChild(container);
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// Creates the graph inside the DOM node.
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// Optionally you can enable panning, tooltips and connections
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// using graph.setPanning(), setTooltips() & setConnectable().
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// To enable rubberband selection and basic keyboard events,
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// use new mxRubberband(graph) and new mxKeyHandler(graph).
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var graph = new mxGraph(container);
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// Enables tooltips, new connections and panning
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graph.setPanning(true);
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graph.setTooltips(true);
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graph.setConnectable(true);
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// Automatically handle parallel edges
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var layout = new mxParallelEdgeLayout(graph);
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var layoutMgr = new mxLayoutManager(graph);
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layoutMgr.getLayout = function(cell)
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{
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if (cell.getChildCount() > 0)
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{
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return layout;
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}
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};
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// Enables rubberband (marquee) selection and a handler
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// for basic keystrokes (eg. return, escape during editing).
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var rubberband = new mxRubberband(graph);
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var keyHandler = new mxKeyHandler(graph);
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// Changes the default style for edges "in-place" and assigns
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// an alternate edge style which is applied in mxGraph.flip
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// when the user double clicks on the adjustment control point
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// of the edge. The ElbowConnector edge style switches to TopToBottom
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// if the horizontal style is true.
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var style = graph.getStylesheet().getDefaultEdgeStyle();
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style[mxConstants.STYLE_ROUNDED] = true;
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style[mxConstants.STYLE_EDGE] = mxEdgeStyle.ElbowConnector;
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graph.alternateEdgeStyle = 'elbow=vertical';
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// Installs a custom tooltip for cells
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graph.getTooltipForCell = function(cell)
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{
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return 'Doubleclick and right- or shiftclick';
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}
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// Installs a popupmenu handler using local function (see below).
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2013-06-28 19:07:06 +00:00
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graph.popupMenuHandler.factoryMethod = function(menu, cell, evt)
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2012-05-21 20:32:26 +00:00
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{
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return createPopupMenu(graph, menu, cell, evt);
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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, 'Doubleclick', 20, 20, 80, 30);
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var v2 = graph.insertVertex(parent, null, 'Right-/Shiftclick', 200, 150, 120, 30);
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var v3 = graph.insertVertex(parent, null, 'Connect/Reconnect', 200, 20, 120, 30);
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var v4 = graph.insertVertex(parent, null, 'Control-Drag', 20, 150, 100, 30);
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var e1 = graph.insertEdge(parent, null, 'Tooltips', v1, v2);
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var e2 = graph.insertEdge(parent, null, '', v2, 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 to create the entries in the popupmenu
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function createPopupMenu(graph, menu, cell, evt)
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{
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if (cell != null)
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{
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menu.addItem('Cell Item', 'editors/images/image.gif', function()
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{
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mxUtils.alert('MenuItem1');
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});
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}
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else
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{
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menu.addItem('No-Cell Item', 'editors/images/image.gif', function()
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{
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mxUtils.alert('MenuItem2');
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});
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}
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menu.addSeparator();
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menu.addItem('MenuItem3', '../src/images/warning.gif', function()
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{
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mxUtils.alert('MenuItem3: '+graph.getSelectionCount()+' selected');
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});
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};
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</script>
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</head>
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<!-- Calls the main function after the page has loaded. Container is dynamically created. -->
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<body onload="main();">
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</body>
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</html>
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