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maxGraph/javascript/examples/userobject.html

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Initial version, 1.10.0.5 release
2012-05-21 20:32:26 +00:00
<!--
2.3.0.0 release
2013-10-28 08:56:36 +00:00
Copyright (c) 2006-2013, JGraph Ltd
Initial version, 1.10.0.5 release
2012-05-21 20:32:26 +00:00
User object example for mxGraph. This example demonstrates using
XML objects as values for cells.
-->
<html>
<head>
<title>User object 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">
// 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
{
// Note that these XML nodes will be enclosing the
// mxCell nodes for the model cells in the output
var doc = mxUtils.createXmlDocument();
var person1 = doc.createElement('Person');
person1.setAttribute('firstName', 'Daffy');
person1.setAttribute('lastName', 'Duck');
var person2 = doc.createElement('Person');
person2.setAttribute('firstName', 'Bugs');
person2.setAttribute('lastName', 'Bunny');
var relation = doc.createElement('Knows');
relation.setAttribute('since', '1985');
// Creates the graph inside the given container
var graph = new mxGraph(container);
// Optional disabling of sizing
graph.setCellsResizable(false);
// Configures the graph contains to resize and
// add a border at the bottom, right
graph.setResizeContainer(true);
graph.minimumContainerSize = new mxRectangle(0, 0, 500, 380);
graph.setBorder(60);
// Stops editing on enter key, handles escape
new mxKeyHandler(graph);
// Overrides method to disallow edge label editing
graph.isCellEditable = function(cell)
{
return !this.getModel().isEdge(cell);
};
// Overrides method to provide a cell label in the display
graph.convertValueToString = function(cell)
{
if (mxUtils.isNode(cell.value))
{
2.9.0.0 release
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if (cell.value.nodeName.toLowerCase() == 'person')
Initial version, 1.10.0.5 release
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{
var firstName = cell.getAttribute('firstName', '');
var lastName = cell.getAttribute('lastName', '');
if (lastName != null && lastName.length > 0)
{
return lastName + ', ' + firstName;
}
return firstName;
}
else if (cell.value.nodeName.toLowerCase() == 'knows')
{
return cell.value.nodeName + ' (Since '
+ cell.getAttribute('since', '') + ')';
}
}
return '';
};
// Overrides method to store a cell label in the model
var cellLabelChanged = graph.cellLabelChanged;
graph.cellLabelChanged = function(cell, newValue, autoSize)
{
if (mxUtils.isNode(cell.value) &&
2.9.0.0 release
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cell.value.nodeName.toLowerCase() == 'person')
Initial version, 1.10.0.5 release
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{
var pos = newValue.indexOf(' ');
var firstName = (pos > 0) ? newValue.substring(0,
pos) : newValue;
var lastName = (pos > 0) ? newValue.substring(
pos + 1, newValue.length) : '';
// Clones the value for correct undo/redo
var elt = cell.value.cloneNode(true);
elt.setAttribute('firstName', firstName);
elt.setAttribute('lastName', lastName);
newValue = elt;
autoSize = true;
}
cellLabelChanged.apply(this, arguments);
};
// Overrides method to create the editing value
var getEditingValue = graph.getEditingValue;
graph.getEditingValue = function(cell)
{
if (mxUtils.isNode(cell.value) &&
2.9.0.0 release
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cell.value.nodeName.toLowerCase() == 'person')
Initial version, 1.10.0.5 release
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{
var firstName = cell.getAttribute('firstName', '');
var lastName = cell.getAttribute('lastName', '');
return firstName + ' ' + lastName;
}
};
// Adds a special tooltip for edges
graph.setTooltips(true);
var getTooltipForCell = graph.getTooltipForCell;
graph.getTooltipForCell = function(cell)
{
// Adds some relation details for edges
if (graph.getModel().isEdge(cell))
{
var src = this.getLabel(this.getModel().getTerminal(cell, true));
var trg = this.getLabel(this.getModel().getTerminal(cell, false));
return src + ' ' + cell.value.nodeName + ' ' + trg;
}
return getTooltipForCell.apply(this, arguments);
};
// Enables rubberband selection
new mxRubberband(graph);
// Adds an option to view the XML of the graph
document.body.appendChild(mxUtils.button('View XML', function()
{
var encoder = new mxCodec();
var node = encoder.encode(graph.getModel());
mxUtils.popup(mxUtils.getPrettyXml(node), true);
}));
// Changes the style for match the markup
// Creates the default style for vertices
var style = graph.getStylesheet().getDefaultVertexStyle();
style[mxConstants.STYLE_STROKECOLOR] = 'gray';
style[mxConstants.STYLE_ROUNDED] = true;
style[mxConstants.STYLE_SHADOW] = true;
style[mxConstants.STYLE_FILLCOLOR] = '#DFDFDF';
style[mxConstants.STYLE_GRADIENTCOLOR] = 'white';
style[mxConstants.STYLE_FONTCOLOR] = 'black';
style[mxConstants.STYLE_FONTSIZE] = '12';
style[mxConstants.STYLE_SPACING] = 4;
// Creates the default style for edges
style = graph.getStylesheet().getDefaultEdgeStyle();
style[mxConstants.STYLE_STROKECOLOR] = '#0C0C0C';
style[mxConstants.STYLE_LABEL_BACKGROUNDCOLOR] = 'white';
style[mxConstants.STYLE_EDGE] = mxEdgeStyle.ElbowConnector;
style[mxConstants.STYLE_ROUNDED] = true;
style[mxConstants.STYLE_FONTCOLOR] = 'black';
style[mxConstants.STYLE_FONTSIZE] = '10';
// 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, person1, 40, 40, 80, 30);
var v2 = graph.insertVertex(parent, null, person2, 200, 150, 80, 30);
var e1 = graph.insertEdge(parent, null, relation, v1, v2);
}
finally
{
// Updates the display
graph.getModel().endUpdate();
}
// Implements a properties panel that uses
// mxCellAttributeChange to change properties
graph.getSelectionModel().addListener(mxEvent.CHANGE, function(sender, evt)
{
selectionChanged(graph);
});
selectionChanged(graph);
}
/**
* Updates the properties panel
*/
function selectionChanged(graph)
{
var div = document.getElementById('properties');
// Forces focusout in IE
graph.container.focus();
// Clears the DIV the non-DOM way
div.innerHTML = '';
// Gets the selection cell
var cell = graph.getSelectionCell();
if (cell == null)
{
mxUtils.writeln(div, 'Nothing selected.');
}
else
{
// Writes the title
var center = document.createElement('center');
mxUtils.writeln(center, cell.value.nodeName + ' (' + cell.id + ')');
div.appendChild(center);
mxUtils.br(div);
// Creates the form from the attributes of the user object
var form = new mxForm();
var attrs = cell.value.attributes;
for (var i = 0; i < attrs.length; i++)
{
createTextField(graph, form, cell, attrs[i]);
}
div.appendChild(form.getTable());
mxUtils.br(div);
}
}
/**
* Creates the textfield for the given property.
*/
function createTextField(graph, form, cell, attribute)
{
var input = form.addText(attribute.nodeName + ':', attribute.nodeValue);
var applyHandler = function()
{
var newValue = input.value || '';
var oldValue = cell.getAttribute(attribute.nodeName, '');
if (newValue != oldValue)
{
graph.getModel().beginUpdate();
try
{
var edit = new mxCellAttributeChange(
cell, attribute.nodeName,
newValue);
graph.getModel().execute(edit);
graph.updateCellSize(cell);
}
finally
{
graph.getModel().endUpdate();
}
}
};
mxEvent.addListener(input, 'keypress', function (evt)
{
// Needs to take shift into account for textareas
if (evt.keyCode == /*enter*/13 &&
!mxEvent.isShiftDown(evt))
{
input.blur();
}
});
if (mxClient.IS_IE)
{
mxEvent.addListener(input, 'focusout', applyHandler);
}
else
{
// Note: Known problem is the blurring of fields in
// Firefox by changing the selection, in which case
// no event is fired in FF and the change is lost.
// As a workaround you should use a local variable
// that stores the focused field and invoke blur
// explicitely where we do the graph.focus above.
mxEvent.addListener(input, 'blur', applyHandler);
}
}
};
</script>
</head>
1.10.2.0 release
2012-07-20 10:35:30 +00:00
<!-- Page passes the container for the graph to the program -->
Initial version, 1.10.0.5 release
2012-05-21 20:32:26 +00:00
<body onload="main(document.getElementById('graphContainer'))">
1.10.4.1 release
2012-12-18 13:09:38 +00:00
<table style="position:relative;">
Initial version, 1.10.0.5 release
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<tr>
<td>
<div id="graphContainer"
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style="border: solid 1px black;overflow:hidden;width:321px;height:241px;cursor:default;">
Initial version, 1.10.0.5 release
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</div>
</td>
<td valign="top">
<div id="properties"
style="border: solid 1px black; padding: 10px;">
</div>
</td>
</tr>
</table>
</body>
</html>