338 lines
9.7 KiB
HTML
338 lines
9.7 KiB
HTML
<!--
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Copyright (c) 2006-2013, JGraph Ltd
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User object example for mxGraph. This example demonstrates using
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XML objects as values for cells.
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-->
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<html>
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<head>
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<title>User object 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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// Note that these XML nodes will be enclosing the
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// mxCell nodes for the model cells in the output
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var doc = mxUtils.createXmlDocument();
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var person1 = doc.createElement('Person');
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person1.setAttribute('firstName', 'Daffy');
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person1.setAttribute('lastName', 'Duck');
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var person2 = doc.createElement('Person');
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person2.setAttribute('firstName', 'Bugs');
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person2.setAttribute('lastName', 'Bunny');
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var relation = doc.createElement('Knows');
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relation.setAttribute('since', '1985');
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// Creates the graph inside the given container
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var graph = new mxGraph(container);
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// Optional disabling of sizing
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graph.setCellsResizable(false);
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// Configures the graph contains to resize and
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// add a border at the bottom, right
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graph.setResizeContainer(true);
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graph.minimumContainerSize = new mxRectangle(0, 0, 500, 380);
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graph.setBorder(60);
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// Stops editing on enter key, handles escape
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new mxKeyHandler(graph);
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// Overrides method to disallow edge label editing
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graph.isCellEditable = function(cell)
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{
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return !this.getModel().isEdge(cell);
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};
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// Overrides method to provide a cell label in the display
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graph.convertValueToString = function(cell)
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{
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if (mxUtils.isNode(cell.value))
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{
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if (cell.value.nodeName.toLowerCase() == 'person')
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{
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var firstName = cell.getAttribute('firstName', '');
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var lastName = cell.getAttribute('lastName', '');
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if (lastName != null && lastName.length > 0)
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{
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return lastName + ', ' + firstName;
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}
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return firstName;
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}
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else if (cell.value.nodeName.toLowerCase() == 'knows')
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{
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return cell.value.nodeName + ' (Since '
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+ cell.getAttribute('since', '') + ')';
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}
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}
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return '';
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};
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// Overrides method to store a cell label in the model
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var cellLabelChanged = graph.cellLabelChanged;
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graph.cellLabelChanged = function(cell, newValue, autoSize)
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{
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if (mxUtils.isNode(cell.value) &&
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cell.value.nodeName.toLowerCase() == 'person')
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{
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var pos = newValue.indexOf(' ');
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var firstName = (pos > 0) ? newValue.substring(0,
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pos) : newValue;
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var lastName = (pos > 0) ? newValue.substring(
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pos + 1, newValue.length) : '';
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// Clones the value for correct undo/redo
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var elt = cell.value.cloneNode(true);
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elt.setAttribute('firstName', firstName);
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elt.setAttribute('lastName', lastName);
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newValue = elt;
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autoSize = true;
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}
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cellLabelChanged.apply(this, arguments);
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};
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// Overrides method to create the editing value
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var getEditingValue = graph.getEditingValue;
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graph.getEditingValue = function(cell)
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{
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if (mxUtils.isNode(cell.value) &&
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cell.value.nodeName.toLowerCase() == 'person')
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{
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var firstName = cell.getAttribute('firstName', '');
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var lastName = cell.getAttribute('lastName', '');
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return firstName + ' ' + lastName;
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}
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};
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// Adds a special tooltip for edges
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graph.setTooltips(true);
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var getTooltipForCell = graph.getTooltipForCell;
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graph.getTooltipForCell = function(cell)
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{
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// Adds some relation details for edges
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if (graph.getModel().isEdge(cell))
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{
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var src = this.getLabel(this.getModel().getTerminal(cell, true));
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var trg = this.getLabel(this.getModel().getTerminal(cell, false));
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return src + ' ' + cell.value.nodeName + ' ' + trg;
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}
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return getTooltipForCell.apply(this, arguments);
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};
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// Enables rubberband selection
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new mxRubberband(graph);
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// Adds an option to view the XML of the graph
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document.body.appendChild(mxUtils.button('View XML', function()
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{
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var encoder = new mxCodec();
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var node = encoder.encode(graph.getModel());
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mxUtils.popup(mxUtils.getPrettyXml(node), true);
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}));
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// Changes the style for match the markup
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// Creates the default style for vertices
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var style = graph.getStylesheet().getDefaultVertexStyle();
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style[mxConstants.STYLE_STROKECOLOR] = 'gray';
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style[mxConstants.STYLE_ROUNDED] = true;
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style[mxConstants.STYLE_SHADOW] = true;
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style[mxConstants.STYLE_FILLCOLOR] = '#DFDFDF';
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style[mxConstants.STYLE_GRADIENTCOLOR] = 'white';
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style[mxConstants.STYLE_FONTCOLOR] = 'black';
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style[mxConstants.STYLE_FONTSIZE] = '12';
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style[mxConstants.STYLE_SPACING] = 4;
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// Creates the default style for edges
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style = graph.getStylesheet().getDefaultEdgeStyle();
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style[mxConstants.STYLE_STROKECOLOR] = '#0C0C0C';
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style[mxConstants.STYLE_LABEL_BACKGROUNDCOLOR] = 'white';
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style[mxConstants.STYLE_EDGE] = mxEdgeStyle.ElbowConnector;
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style[mxConstants.STYLE_ROUNDED] = true;
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style[mxConstants.STYLE_FONTCOLOR] = 'black';
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style[mxConstants.STYLE_FONTSIZE] = '10';
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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, person1, 40, 40, 80, 30);
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var v2 = graph.insertVertex(parent, null, person2, 200, 150, 80, 30);
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var e1 = graph.insertEdge(parent, null, relation, 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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// Implements a properties panel that uses
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// mxCellAttributeChange to change properties
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graph.getSelectionModel().addListener(mxEvent.CHANGE, function(sender, evt)
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{
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selectionChanged(graph);
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});
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selectionChanged(graph);
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}
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/**
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* Updates the properties panel
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*/
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function selectionChanged(graph)
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{
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var div = document.getElementById('properties');
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// Forces focusout in IE
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graph.container.focus();
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// Clears the DIV the non-DOM way
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div.innerHTML = '';
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// Gets the selection cell
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var cell = graph.getSelectionCell();
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if (cell == null)
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{
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mxUtils.writeln(div, 'Nothing selected.');
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}
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else
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{
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// Writes the title
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var center = document.createElement('center');
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mxUtils.writeln(center, cell.value.nodeName + ' (' + cell.id + ')');
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div.appendChild(center);
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mxUtils.br(div);
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// Creates the form from the attributes of the user object
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var form = new mxForm();
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var attrs = cell.value.attributes;
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for (var i = 0; i < attrs.length; i++)
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{
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createTextField(graph, form, cell, attrs[i]);
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}
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div.appendChild(form.getTable());
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mxUtils.br(div);
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}
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}
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/**
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* Creates the textfield for the given property.
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*/
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function createTextField(graph, form, cell, attribute)
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{
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var input = form.addText(attribute.nodeName + ':', attribute.nodeValue);
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var applyHandler = function()
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{
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var newValue = input.value || '';
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var oldValue = cell.getAttribute(attribute.nodeName, '');
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if (newValue != oldValue)
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{
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graph.getModel().beginUpdate();
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try
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{
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var edit = new mxCellAttributeChange(
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cell, attribute.nodeName,
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newValue);
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graph.getModel().execute(edit);
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graph.updateCellSize(cell);
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}
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finally
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{
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graph.getModel().endUpdate();
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}
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}
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};
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mxEvent.addListener(input, 'keypress', function (evt)
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{
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// Needs to take shift into account for textareas
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if (evt.keyCode == /*enter*/13 &&
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!mxEvent.isShiftDown(evt))
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{
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input.blur();
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}
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});
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if (mxClient.IS_IE)
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{
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mxEvent.addListener(input, 'focusout', applyHandler);
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}
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else
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{
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// Note: Known problem is the blurring of fields in
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// Firefox by changing the selection, in which case
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// no event is fired in FF and the change is lost.
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// As a workaround you should use a local variable
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// that stores the focused field and invoke blur
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// explicitely where we do the graph.focus above.
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mxEvent.addListener(input, 'blur', applyHandler);
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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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<table style="position:relative;">
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<tr>
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<td>
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<div id="graphContainer"
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style="border: solid 1px black;overflow:hidden;width:321px;height:241px;cursor:default;">
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</div>
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</td>
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<td valign="top">
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<div id="properties"
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style="border: solid 1px black; padding: 10px;">
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</div>
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</td>
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</tr>
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</table>
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</body>
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</html>
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