mxgraph-map-fix
Version:
mxGraph is a fully client side JavaScript diagramming library that uses SVG and HTML for rendering.
219 lines (181 loc) • 6.2 kB
HTML
<!--
Copyright (c) 2006-2013, JGraph Ltd
File I/O example for mxGraph. This example demonstrates reading an
XML file, writing a custom parser, applying an automatic layout and
defining a 2-way edge.
-->
<html>
<head>
<title>File I/O 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 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.setEnabled(false);
graph.setPanning(true);
graph.setTooltips(true);
graph.panningHandler.useLeftButtonForPanning = true;
// Adds a highlight on the cell under the mousepointer
new mxCellTracker(graph);
// Changes the default vertex style in-place
var style = graph.getStylesheet().getDefaultVertexStyle();
style[mxConstants.STYLE_SHAPE] = mxConstants.SHAPE_ROUNDED;
style[mxConstants.STYLE_PERIMETER] = mxPerimeter.RectanglePerimeter;
style[mxConstants.STYLE_GRADIENTCOLOR] = 'white';
style[mxConstants.STYLE_PERIMETER_SPACING] = 4;
style[mxConstants.STYLE_SHADOW] = true;
style = graph.getStylesheet().getDefaultEdgeStyle();
style[mxConstants.STYLE_LABEL_BACKGROUNDCOLOR] = 'white';
style = mxUtils.clone(style);
style[mxConstants.STYLE_STARTARROW] = mxConstants.ARROW_CLASSIC;
graph.getStylesheet().putCellStyle('2way', style);
graph.isHtmlLabel = function(cell)
{
return true;
};
// Larger grid size yields cleaner layout result
graph.gridSize = 20;
// Creates a layout algorithm to be used
// with the graph
var layout = new mxFastOrganicLayout(graph);
// Moves stuff wider apart than usual
layout.forceConstant = 140;
// Adds a button to execute the layout
document.body.appendChild(mxUtils.button('Arrange',function(evt)
{
var parent = graph.getDefaultParent();
layout.execute(parent);
}));
// Load cells and layouts the graph
graph.getModel().beginUpdate();
try
{
// Loads the custom file format (TXT file)
parse(graph, 'fileio.txt');
// Loads the mxGraph file format (XML file)
//read(graph, 'fileio.xml');
// Gets the default parent for inserting new cells. This
// is normally the first child of the root (ie. layer 0).
var parent = graph.getDefaultParent();
// Executes the layout
layout.execute(parent);
}
finally
{
// Updates the display
graph.getModel().endUpdate();
}
graph.dblClick = function(evt, cell)
{
var mxe = new mxEventObject(mxEvent.DOUBLE_CLICK, 'event', evt, 'cell', cell);
this.fireEvent(mxe);
if (this.isEnabled() &&
!mxEvent.isConsumed(evt) &&
!mxe.isConsumed() &&
cell != null)
{
mxUtils.alert('Show properties for cell '+(cell.customId || cell.getId()));
}
};
if (mxClient.IS_QUIRKS)
{
document.body.style.overflow = 'hidden';
new mxDivResizer(container);
}
}
};
// Custom parser for simple file format
function parse(graph, filename)
{
var model = graph.getModel();
// Gets the default parent for inserting new cells. This
// is normally the first child of the root (ie. layer 0).
var parent = graph.getDefaultParent();
var req = mxUtils.load(filename);
var text = req.getText();
var lines = text.split('\n');
// Creates the lookup table for the vertices
var vertices = [];
// Parses all lines (vertices must be first in the file)
graph.getModel().beginUpdate();
try
{
for (var i=0; i<lines.length; i++)
{
// Ignores comments (starting with #)
var colon = lines[i].indexOf(':');
if (lines[i].substring(0, 1) != "#" ||
colon == -1)
{
var comma = lines[i].indexOf(',');
var value = lines[i].substring(colon+2, lines[i].length);
if (comma == -1 || comma > colon)
{
var key = lines[i].substring(0, colon);
if (key.length > 0)
{
vertices[key] = graph.insertVertex(parent, null, value, 0, 0, 80, 70);
}
}
else if (comma < colon)
{
// Looks up the vertices in the lookup table
var source = vertices[lines[i].substring(0, comma)];
var target = vertices[lines[i].substring(comma+1, colon)];
if (source != null && target != null)
{
var e = graph.insertEdge(parent, null, value, source, target);
// Uses the special 2-way style for 2-way labels
if (value.indexOf('2-Way') >= 0)
{
e.style = '2way';
}
}
}
}
}
}
finally
{
graph.getModel().endUpdate();
}
};
// Parses the mxGraph XML file format
function read(graph, filename)
{
var req = mxUtils.load(filename);
var root = req.getDocumentElement();
var dec = new mxCodec(root.ownerDocument);
dec.decode(root, graph.getModel());
};
</script>
</head>
<!-- Page passes the container for the graph to the program -->
<body onload="main(document.getElementById('graphContainer'))" style="margin:4px;">
<!-- Creates a container for the graph with a grid wallpaper. Make sure to define the position
and overflow attributes! See comments on the adding of the size-listener on line 54 ff! -->
<div id="graphContainer"
style="position:absolute;overflow:auto;top:36px;bottom:0px;left:0px;right:0px;border-top:gray 1px solid;">
</div>
</body>
</html>