last demo import - cleaned
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198
static/mxgraph/examples/autolayout.html
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198
static/mxgraph/examples/autolayout.html
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<!--
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Copyright (c) 2006-2013, JGraph Ltd
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Autolayout example for mxGraph. This example demonstrates running
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and animating a layout algorithm after every change to a graph.
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-->
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<html>
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<head>
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<title>Auto layout 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(container)
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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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mxEvent.disableContextMenu(container);
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var mxCellRendererInstallCellOverlayListeners = mxCellRenderer.prototype.installCellOverlayListeners;
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mxCellRenderer.prototype.installCellOverlayListeners = function(state, overlay, shape)
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{
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mxCellRendererInstallCellOverlayListeners.apply(this, arguments);
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mxEvent.addListener(shape.node, (mxClient.IS_POINTER) ? 'pointerdown' : 'mousedown', function (evt)
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{
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overlay.fireEvent(new mxEventObject('pointerdown', 'event', evt, 'state', state));
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});
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if (!mxClient.IS_POINTER && mxClient.IS_TOUCH)
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{
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mxEvent.addListener(shape.node, 'touchstart', function (evt)
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{
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overlay.fireEvent(new mxEventObject('pointerdown', 'event', evt, 'state', state));
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});
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}
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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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graph.setPanning(true);
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graph.panningHandler.useLeftButtonForPanning = true;
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graph.setAllowDanglingEdges(false);
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graph.connectionHandler.select = false;
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graph.view.setTranslate(20, 20);
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// Enables rubberband selection
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new mxRubberband(graph);
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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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var addOverlay = function(cell)
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{
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// Creates a new overlay with an image and a tooltip
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var overlay = new mxCellOverlay(new mxImage('images/add.png', 24, 24), 'Add outgoing');
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overlay.cursor = 'hand';
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// Installs a handler for clicks on the overlay
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overlay.addListener(mxEvent.CLICK, function(sender, evt2)
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{
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graph.clearSelection();
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var geo = graph.getCellGeometry(cell);
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var v2;
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executeLayout(function()
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{
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v2 = graph.insertVertex(parent, null, 'World!', geo.x, geo.y, 80, 30);
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addOverlay(v2);
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graph.view.refresh(v2);
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var e1 = graph.insertEdge(parent, null, '', cell, v2);
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}, function()
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{
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graph.scrollCellToVisible(v2);
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});
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});
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// Special CMS event
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overlay.addListener('pointerdown', function(sender, eo)
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{
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var evt2 = eo.getProperty('event');
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var state = eo.getProperty('state');
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graph.popupMenuHandler.hideMenu();
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graph.stopEditing(false);
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var pt = mxUtils.convertPoint(graph.container,
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mxEvent.getClientX(evt2), mxEvent.getClientY(evt2));
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graph.connectionHandler.start(state, pt.x, pt.y);
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graph.isMouseDown = true;
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graph.isMouseTrigger = mxEvent.isMouseEvent(evt2);
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mxEvent.consume(evt2);
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});
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// Sets the overlay for the cell in the graph
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graph.addCellOverlay(cell, overlay);
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}
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// Adds cells to the model in a single step
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graph.getModel().beginUpdate();
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var v1;
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try
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{
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v1 = graph.insertVertex(parent, null, 'Hello,', 0, 0, 80, 30);
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addOverlay(v1);
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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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var layout = new mxHierarchicalLayout(graph, mxConstants.DIRECTION_WEST);
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var executeLayout = function(change, post)
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{
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graph.getModel().beginUpdate();
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try
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{
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if (change != null)
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{
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change();
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}
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layout.execute(graph.getDefaultParent(), v1);
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}
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catch (e)
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{
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throw e;
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}
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finally
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{
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// New API for animating graph layout results asynchronously
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var morph = new mxMorphing(graph);
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morph.addListener(mxEvent.DONE, mxUtils.bind(this, function()
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{
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graph.getModel().endUpdate();
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if (post != null)
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{
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post();
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}
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}));
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morph.startAnimation();
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}
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};
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var edgeHandleConnect = mxEdgeHandler.prototype.connect;
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mxEdgeHandler.prototype.connect = function(edge, terminal, isSource, isClone, me)
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{
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edgeHandleConnect.apply(this, arguments);
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executeLayout();
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};
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graph.resizeCell = function()
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{
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mxGraph.prototype.resizeCell.apply(this, arguments);
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executeLayout();
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};
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graph.connectionHandler.addListener(mxEvent.CONNECT, function()
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{
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executeLayout();
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});
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}
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};
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</script>
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</head>
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<!-- Page passes the container for the graph to the program -->
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<body onload="main(document.getElementById('graphContainer'))">
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<!-- Creates a container for the graph with a grid wallpaper -->
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<div id="graphContainer"
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style="position:relative;overflow:hidden;width:821px;height:641px;background:url('editors/images/grid.gif');cursor:default;">
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</div>
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</body>
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</html>
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