179 lines
5.0 KiB
HTML
179 lines
5.0 KiB
HTML
<!--
|
|
Copyright (c) 2006-2013, JGraph Ltd
|
|
|
|
Groups example for mxGraph. This example demonstrates using
|
|
cells as parts of other cells.
|
|
-->
|
|
<html>
|
|
<head>
|
|
<title>Hello, World! 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">
|
|
// Overrides check for valid roots
|
|
mxGraph.prototype.isValidRoot = function()
|
|
{
|
|
return false;
|
|
};
|
|
|
|
// Don't clear selection if multiple cells selected
|
|
var graphHandlerMouseDown = mxGraphHandler.prototype.mouseDown;
|
|
mxGraphHandler.prototype.mouseDown = function(sender, me)
|
|
{
|
|
graphHandlerMouseDown.apply(this, arguments);
|
|
|
|
if (this.graph.isCellSelected(me.getCell()) && this.graph.getSelectionCount() > 1)
|
|
{
|
|
this.delayedSelection = false;
|
|
}
|
|
};
|
|
|
|
// Selects descendants before children selection mode
|
|
var graphHandlerGetInitialCellForEvent = mxGraphHandler.prototype.getInitialCellForEvent;
|
|
mxGraphHandler.prototype.getInitialCellForEvent = function(me)
|
|
{
|
|
var model = this.graph.getModel();
|
|
var psel = model.getParent(this.graph.getSelectionCell());
|
|
var cell = graphHandlerGetInitialCellForEvent.apply(this, arguments);
|
|
var parent = model.getParent(cell);
|
|
|
|
if (psel == null || (psel != cell && psel != parent))
|
|
{
|
|
while (!this.graph.isCellSelected(cell) && !this.graph.isCellSelected(parent) &&
|
|
model.isVertex(parent) && !this.graph.isValidRoot(parent))
|
|
{
|
|
cell = parent;
|
|
parent = this.graph.getModel().getParent(cell);
|
|
}
|
|
}
|
|
|
|
return cell;
|
|
};
|
|
|
|
// Selection is delayed to mouseup if child selected
|
|
var graphHandlerIsDelayedSelection = mxGraphHandler.prototype.isDelayedSelection;
|
|
mxGraphHandler.prototype.isDelayedSelection = function(cell)
|
|
{
|
|
var result = graphHandlerIsDelayedSelection.apply(this, arguments);
|
|
var model = this.graph.getModel();
|
|
var psel = model.getParent(this.graph.getSelectionCell());
|
|
var parent = model.getParent(cell);
|
|
|
|
if (psel == null || (psel != cell && psel != parent))
|
|
{
|
|
if (!this.graph.isCellSelected(cell) && model.isVertex(parent) && !this.graph.isValidRoot(parent))
|
|
{
|
|
result = true;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
};
|
|
|
|
// Delayed selection of parent group
|
|
mxGraphHandler.prototype.selectDelayed = function(me)
|
|
{
|
|
var cell = me.getCell();
|
|
|
|
if (cell == null)
|
|
{
|
|
cell = this.cell;
|
|
}
|
|
|
|
var model = this.graph.getModel();
|
|
var parent = model.getParent(cell);
|
|
|
|
while (this.graph.isCellSelected(cell) && model.isVertex(parent) && !this.graph.isValidRoot(parent))
|
|
{
|
|
cell = parent;
|
|
parent = model.getParent(cell);
|
|
}
|
|
|
|
this.graph.selectCellForEvent(cell, me.getEvent());
|
|
};
|
|
|
|
// Returns last selected ancestor
|
|
mxPopupMenuHandler.prototype.getCellForPopupEvent = function(me)
|
|
{
|
|
var cell = me.getCell();
|
|
var model = this.graph.getModel();
|
|
var parent = model.getParent(cell);
|
|
|
|
while (model.isVertex(parent) && !this.graph.isValidRoot(parent))
|
|
{
|
|
if (this.graph.isCellSelected(parent))
|
|
{
|
|
cell = parent;
|
|
}
|
|
|
|
parent = model.getParent(parent);
|
|
}
|
|
|
|
return cell;
|
|
};
|
|
|
|
// 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.constrainChildren = false;
|
|
graph.extendParents = false;
|
|
graph.extendParentsOnAdd = false;
|
|
|
|
// 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, 120, 60);
|
|
var v2 = graph.insertVertex(v1, null, 'World!', 90, 20, 60, 20);
|
|
}
|
|
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>
|