<!-- Copyright (c) 2006-2013, JGraph Ltd Context icons example for mxGraph. This example demonstrates adding icons to selected vertices to carry out special operations. --> <html> <head> <title>Context icons 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"> // Defines a subclass for mxVertexHandler that adds a set of clickable // icons to every selected vertex. function mxVertexToolHandler(state) { mxVertexHandler.apply(this, arguments); }; mxVertexToolHandler.prototype = new mxVertexHandler(); mxVertexToolHandler.prototype.constructor = mxVertexToolHandler; mxVertexToolHandler.prototype.domNode = null; mxVertexToolHandler.prototype.init = function() { mxVertexHandler.prototype.init.apply(this, arguments); // In this example we force the use of DIVs for images in IE. This // handles transparency in PNG images properly in IE and fixes the // problem that IE routes all mouse events for a gesture via the // initial IMG node, which means the target vertices this.domNode = document.createElement('div'); this.domNode.style.position = 'absolute'; this.domNode.style.whiteSpace = 'nowrap'; // Workaround for event redirection via image tag in quirks and IE8 function createImage(src) { if (mxClient.IS_IE && !mxClient.IS_SVG) { var img = document.createElement('div'); img.style.backgroundImage = 'url(' + src + ')'; img.style.backgroundPosition = 'center'; img.style.backgroundRepeat = 'no-repeat'; img.style.display = (mxClient.IS_QUIRKS) ? 'inline' : 'inline-block'; return img; } else { return mxUtils.createImage(src); } }; // Delete var img = createImage('images/delete2.png'); img.setAttribute('title', 'Delete'); img.style.cursor = 'pointer'; img.style.width = '16px'; img.style.height = '16px'; mxEvent.addGestureListeners(img, mxUtils.bind(this, function(evt) { // Disables dragging the image mxEvent.consume(evt); }) ); mxEvent.addListener(img, 'click', mxUtils.bind(this, function(evt) { this.graph.removeCells([this.state.cell]); mxEvent.consume(evt); }) ); this.domNode.appendChild(img); // Size var img = createImage('images/fit_to_size.png'); img.setAttribute('title', 'Resize'); img.style.cursor = 'se-resize'; img.style.width = '16px'; img.style.height = '16px'; mxEvent.addGestureListeners(img, mxUtils.bind(this, function(evt) { this.start(mxEvent.getClientX(evt), mxEvent.getClientY(evt), 7); this.graph.isMouseDown = true; this.graph.isMouseTrigger = mxEvent.isMouseEvent(evt); mxEvent.consume(evt); }) ); this.domNode.appendChild(img); // Move var img = createImage('images/plus.png'); img.setAttribute('title', 'Move'); img.style.cursor = 'move'; img.style.width = '16px'; img.style.height = '16px'; mxEvent.addGestureListeners(img, mxUtils.bind(this, function(evt) { this.graph.graphHandler.start(this.state.cell, mxEvent.getClientX(evt), mxEvent.getClientY(evt)); this.graph.graphHandler.cellWasClicked = true; this.graph.isMouseDown = true; this.graph.isMouseTrigger = mxEvent.isMouseEvent(evt); mxEvent.consume(evt); }) ); this.domNode.appendChild(img); // Connect var img = createImage('images/check.png'); img.setAttribute('title', 'Connect'); img.style.cursor = 'pointer'; img.style.width = '16px'; img.style.height = '16px'; mxEvent.addGestureListeners(img, mxUtils.bind(this, function(evt) { var pt = mxUtils.convertPoint(this.graph.container, mxEvent.getClientX(evt), mxEvent.getClientY(evt)); this.graph.connectionHandler.start(this.state, pt.x, pt.y); this.graph.isMouseDown = true; this.graph.isMouseTrigger = mxEvent.isMouseEvent(evt); mxEvent.consume(evt); }) ); this.domNode.appendChild(img); this.graph.container.appendChild(this.domNode); this.redrawTools(); }; mxVertexToolHandler.prototype.redraw = function() { mxVertexHandler.prototype.redraw.apply(this); this.redrawTools(); }; mxVertexToolHandler.prototype.redrawTools = function() { if (this.state != null && this.domNode != null) { var dy = (mxClient.IS_VML && document.compatMode == 'CSS1Compat') ? 20 : 4; this.domNode.style.left = (this.state.x + this.state.width - 56) + 'px'; this.domNode.style.top = (this.state.y + this.state.height + dy) + 'px'; } }; mxVertexToolHandler.prototype.destroy = function(sender, me) { mxVertexHandler.prototype.destroy.apply(this, arguments); if (this.domNode != null) { this.domNode.parentNode.removeChild(this.domNode); this.domNode = null; } }; // 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(container) { // 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 { // Creates the graph inside the given container var graph = new mxGraph(container); graph.setConnectable(true); graph.connectionHandler.createTarget = true; graph.createHandler = function(state) { if (state != null && this.model.isVertex(state.cell)) { return new mxVertexToolHandler(state); } return mxGraph.prototype.createHandler.apply(this, arguments); }; // 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(); } } }; </script> </head> <!-- Page passes the container for the graph to the program --> <body onload="main(document.getElementById('graphContainer'))"> <!-- Creates a container for the graph with a grid wallpaper --> <div id="graphContainer" style="overflow:hidden;width:321px;height:241px;background:url('editors/images/grid.gif');cursor:default;"> </div> </body> </html>