239 lines
7.0 KiB
HTML
239 lines
7.0 KiB
HTML
<!--
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Copyright (c) 2006-2013, JGraph Ltd
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Context icons example for mxGraph. This example demonstrates adding
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icons to selected vertices to carry out special operations.
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-->
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<html>
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<head>
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<title>Context icons 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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// Defines a subclass for mxVertexHandler that adds a set of clickable
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// icons to every selected vertex.
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function mxVertexToolHandler(state)
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{
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mxVertexHandler.apply(this, arguments);
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};
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mxVertexToolHandler.prototype = new mxVertexHandler();
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mxVertexToolHandler.prototype.constructor = mxVertexToolHandler;
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mxVertexToolHandler.prototype.domNode = null;
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mxVertexToolHandler.prototype.init = function()
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{
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mxVertexHandler.prototype.init.apply(this, arguments);
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// In this example we force the use of DIVs for images in IE. This
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// handles transparency in PNG images properly in IE and fixes the
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// problem that IE routes all mouse events for a gesture via the
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// initial IMG node, which means the target vertices
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this.domNode = document.createElement('div');
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this.domNode.style.position = 'absolute';
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this.domNode.style.whiteSpace = 'nowrap';
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// Workaround for event redirection via image tag in quirks and IE8
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function createImage(src)
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{
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if (mxClient.IS_IE && !mxClient.IS_SVG)
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{
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var img = document.createElement('div');
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img.style.backgroundImage = 'url(' + src + ')';
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img.style.backgroundPosition = 'center';
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img.style.backgroundRepeat = 'no-repeat';
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img.style.display = (mxClient.IS_QUIRKS) ? 'inline' : 'inline-block';
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return img;
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}
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else
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{
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return mxUtils.createImage(src);
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}
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};
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// Delete
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var img = createImage('images/delete2.png');
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img.setAttribute('title', 'Delete');
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img.style.cursor = 'pointer';
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img.style.width = '16px';
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img.style.height = '16px';
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mxEvent.addGestureListeners(img,
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mxUtils.bind(this, function(evt)
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{
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// Disables dragging the image
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mxEvent.consume(evt);
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})
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);
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mxEvent.addListener(img, 'click',
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mxUtils.bind(this, function(evt)
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{
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this.graph.removeCells([this.state.cell]);
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mxEvent.consume(evt);
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})
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);
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this.domNode.appendChild(img);
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// Size
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var img = createImage('images/fit_to_size.png');
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img.setAttribute('title', 'Resize');
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img.style.cursor = 'se-resize';
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img.style.width = '16px';
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img.style.height = '16px';
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mxEvent.addGestureListeners(img,
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mxUtils.bind(this, function(evt)
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{
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this.start(mxEvent.getClientX(evt), mxEvent.getClientY(evt), 7);
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this.graph.isMouseDown = true;
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this.graph.isMouseTrigger = mxEvent.isMouseEvent(evt);
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mxEvent.consume(evt);
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})
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);
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this.domNode.appendChild(img);
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// Move
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var img = createImage('images/plus.png');
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img.setAttribute('title', 'Move');
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img.style.cursor = 'move';
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img.style.width = '16px';
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img.style.height = '16px';
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mxEvent.addGestureListeners(img,
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mxUtils.bind(this, function(evt)
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{
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this.graph.graphHandler.start(this.state.cell,
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mxEvent.getClientX(evt), mxEvent.getClientY(evt));
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this.graph.graphHandler.cellWasClicked = true;
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this.graph.isMouseDown = true;
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this.graph.isMouseTrigger = mxEvent.isMouseEvent(evt);
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mxEvent.consume(evt);
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})
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);
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this.domNode.appendChild(img);
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// Connect
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var img = createImage('images/check.png');
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img.setAttribute('title', 'Connect');
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img.style.cursor = 'pointer';
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img.style.width = '16px';
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img.style.height = '16px';
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mxEvent.addGestureListeners(img,
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mxUtils.bind(this, function(evt)
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{
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var pt = mxUtils.convertPoint(this.graph.container,
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mxEvent.getClientX(evt), mxEvent.getClientY(evt));
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this.graph.connectionHandler.start(this.state, pt.x, pt.y);
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this.graph.isMouseDown = true;
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this.graph.isMouseTrigger = mxEvent.isMouseEvent(evt);
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mxEvent.consume(evt);
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})
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);
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this.domNode.appendChild(img);
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this.graph.container.appendChild(this.domNode);
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this.redrawTools();
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};
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mxVertexToolHandler.prototype.redraw = function()
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{
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mxVertexHandler.prototype.redraw.apply(this);
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this.redrawTools();
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};
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mxVertexToolHandler.prototype.redrawTools = function()
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{
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if (this.state != null && this.domNode != null)
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{
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var dy = (mxClient.IS_VML && document.compatMode == 'CSS1Compat') ? 20 : 4;
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this.domNode.style.left = (this.state.x + this.state.width - 56) + 'px';
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this.domNode.style.top = (this.state.y + this.state.height + dy) + 'px';
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}
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};
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mxVertexToolHandler.prototype.destroy = function(sender, me)
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{
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mxVertexHandler.prototype.destroy.apply(this, arguments);
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if (this.domNode != null)
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{
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this.domNode.parentNode.removeChild(this.domNode);
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this.domNode = null;
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}
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};
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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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// Creates the graph inside the given container
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var graph = new mxGraph(container);
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graph.setConnectable(true);
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graph.connectionHandler.createTarget = true;
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graph.createHandler = function(state)
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{
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if (state != null &&
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this.model.isVertex(state.cell))
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{
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return new mxVertexToolHandler(state);
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}
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return mxGraph.prototype.createHandler.apply(this, arguments);
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};
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// Uncomment the following if you want the container
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// to fit the size of the graph
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//graph.setResizeContainer(true);
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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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// 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, 'Hello,', 20, 20, 80, 30);
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var v2 = graph.insertVertex(parent, null, 'World!', 200, 150, 80, 30);
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var e1 = graph.insertEdge(parent, null, '', v1, v2);
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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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</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="overflow:hidden;width:321px;height:241px;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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