src/org/un/cava/birdeye/ravis/components/ui/controls/layouterControls/LayoutSelector.mxml
<?xml version="1.0" encoding="utf-8"?>
<!--
*
* The MIT License
*
* Copyright (c) 2008
* United Nations Office at Geneva
* Center for Advanced Visual Analytics
* http://cava.unog.ch
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* THE SOFTWARE.
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<mx:ComboBox xmlns:mx="http://www.adobe.com/2006/mxml"
height="20"
width="95%"
color="#CCCCCC"
prompt="Select layout algorithm."
toolTip="Some layouters may not be fully stable."
initialize="initData()"
change="changeLayouter()" >
<mx:ArrayCollection id="layouts">
<mx:String>---Radial---</mx:String>
<mx:String>ConcentricRadial</mx:String>
<mx:String>ParentCenteredRadial</mx:String>
<mx:String>SingleCycleCircle</mx:String>
<mx:String>Hyperbolic</mx:String>
<mx:String>---Tree---</mx:String>
<mx:String>Hierarchical</mx:String>
<mx:String>---Physics---</mx:String>
<mx:String>ForceDirected</mx:String>
<mx:String>ISOM</mx:String>
<mx:String>---Coordinates---</mx:String>
<mx:String>DirectPlacement</mx:String>
<mx:String>---Experimental---</mx:String>
<mx:String>Phyllotactic</mx:String>
</mx:ArrayCollection>
<mx:Script>
<![CDATA[
import mx.utils.ObjectUtil;
import org.un.cava.birdeye.ravis.utils.LogUtil;
import org.un.cava.birdeye.ravis.utils.events.VGraphEvent;
import org.un.cava.birdeye.ravis.graphLayout.visual.VisualGraph;
import org.un.cava.birdeye.ravis.graphLayout.layout.ILayoutAlgorithm;
import org.un.cava.birdeye.ravis.graphLayout.layout.CircularLayouter;
import org.un.cava.birdeye.ravis.graphLayout.layout.ConcentricRadialLayouter;
import org.un.cava.birdeye.ravis.graphLayout.layout.DirectPlacementLayouter;
import org.un.cava.birdeye.ravis.graphLayout.layout.ForceDirectedLayouter;
import org.un.cava.birdeye.ravis.graphLayout.layout.HierarchicalLayouter;
import org.un.cava.birdeye.ravis.graphLayout.layout.Hyperbolic2DLayouter;
import org.un.cava.birdeye.ravis.graphLayout.layout.ISOMLayouter;
import org.un.cava.birdeye.ravis.graphLayout.layout.ParentCenteredRadialLayouter;
import org.un.cava.birdeye.ravis.graphLayout.layout.PhylloTreeLayouter;
private static const _LOG:String = "components.ui.controls.layouterControls.LayoutSelector";
private var _vgraph:VisualGraph;
/**
* Provides access to the registered vgraph object.
* */
public function set vgraph(v:VisualGraph):void {
_vgraph = v;
registerListeners();
}
/**
* @private
* */
public function get vgraph():VisualGraph {
return _vgraph;
}
/**
* When enabling or disabling this component, we also
* perform some specific tasks.
* Attention do completely disable interaction
* there is also the mouseEnabled property.
*
* @inheritDoc
* */
override public function set enabled(e:Boolean):void {
if(e == true) {
this.setStyle("color",0x000000);
this.alpha=1;
} else {
this.setStyle("color",0xCCCCCC);
this.alpha=0.3;
}
/* call superclass (ComboBox) */
super.enabled = e;
}
/**
* Set the selected Layouter.
* */
public function changeLayouter():void {
/* check if we have a vgraph at all */
if(_vgraph == null) {
LogUtil.warn(_LOG, "Cannot change Layouter without vgraph.");
return;
}
setLayouter();
_vgraph.draw(); // run the layout
}
/**
* Set/Activate the layouter set in the selector.
* */
public function setLayouter():void {
var layouter:ILayoutAlgorithm;
var layouterName:String = (this.selectedItem as String);
/* check if we have a vgraph at all */
if(_vgraph == null) {
LogUtil.warn(_LOG, "Cannot change Layouter without vgraph.");
return;
}
/* kill off animation in old layouter if present */
if(_vgraph.layouter != null) {
_vgraph.layouter.resetAll();
/* remove also existing references thus
* destroying the object (maybe this is not needed?) */
_vgraph.layouter = null;
}
/* now choose the selected layouter */
switch(layouterName) {
case "ConcentricRadial":
layouter = new ConcentricRadialLayouter(_vgraph);
break;
case "ParentCenteredRadial":
layouter = new ParentCenteredRadialLayouter(_vgraph);
break;
case "SingleCycleCircle":
layouter = new CircularLayouter(_vgraph);
/* set the hyperbolic edge renderer type *
_vgraph.edgeRenderer = new CircularEdgeRenderer();
_vgraph.scrollBackgroundInDrag = false;
_vgraph.moveNodeInDrag = false;
absoluteScaling = true;
updateScale();
*/
break;
case "Hyperbolic":
layouter = new Hyperbolic2DLayouter(_vgraph);
/* set some layouter specific defaults:
_vgraph.edgeRenderer = new HyperbolicEdgeRenderer((layouter as Hyperbolic2DLayouter).projector);
_vgraph.scrollBackgroundInDrag = false;
_vgraph.moveNodeInDrag = false;
absoluteScaling = false;
*/
break;
case "Hierarchical":
layouter = new HierarchicalLayouter(_vgraph);
break;
case "ForceDirected":
layouter = new ForceDirectedLayouter(_vgraph);
break;
case "ISOM":
layouter = new ISOMLayouter(_vgraph);
break;
case "DirectPlacement":
layouter = new DirectPlacementLayouter(_vgraph);
/* set some layouter specific values, i.e. create a control
* for these first, also they could be prepopulated from
* XML data
(layouter as DirectPlacementLayouter).relativeHeight = 400;
(layouter as DirectPlacementLayouter).relativeWidth = 400;
*/
/*
/* set the orthogonal edge renderer type *
_vgraph.edgeRenderer = new OrthogonalEdgeRenderer();
_vgraph.scrollBackgroundInDrag = true;
_vgraph.moveNodeInDrag = true;
absoluteScaling = true;
updateScale();
*/
break;
case "Phyllotactic":
layouter = new PhylloTreeLayouter(_vgraph);
break;
default:
LogUtil.warn(_LOG, "Illegal Layouter selected, defaulting to ConcentricRadial"+
layouterName);
layouter = new ConcentricRadialLayouter(_vgraph);
break;
}
_vgraph.layouter = layouter;
}
/**
* Refresh the selector if an external event changes the layouter.
* */
public function refreshSelector(e:VGraphEvent = null):void {
var layouterClassName:String;
var layouterName:String;
/* check if we have a vgraph/layouter at all */
if(_vgraph == null || _vgraph.layouter == null) {
LogUtil.warn(_LOG, "Cannot refresh the LayoutSelector without vgraph or Layouter.");
return;
}
layouterClassName = ObjectUtil.getClassInfo(_vgraph.layouter).name;
layouterClassName = layouterClassName.replace(/org.un.cava.birdeye.ravis.graphLayout.layout::/,"");
/* now choose the selected layouter */
switch(layouterClassName) {
case "ConcentricRadialLayouter":
layouterName = "ConcentricRadial";
break;
case "ParentCenteredRadialLayouter":
layouterName = "ParentCenteredRadial";
break;
case "CircularLayouter":
layouterName = "SingleCycleCircle";
break;
case "Hyperbolic2DLayouter":
layouterName = "Hyperbolic";
break;
case "HierarchicalLayouter":
layouterName = "Hierarchical";
break;
case "ForceDirectedLayouter":
layouterName = "ForceDirected";
break;
case "ISOMLayouter":
layouterName = "ISOM";
break;
case "DirectPlacementLayouter":
layouterName = "DirectPlacement";
break;
case "PhylloTreeLayouter":
layouterName = "Phyllotactic";
break;
default:
layouterName = "Unknown";
LogUtil.warn(_LOG, "Unknown Layouter found:"+layouterClassName);
break;
}
/* make the selection */
/* XXX THIS MAY CAUSE A LOOP POSSIBLY */
this.selectedItem = layouterName;
}
/**
* initialise the selection data.
* It is a bit unclear, why this seems to be necessary.
* */
private function initData():void {
this.dataProvider = layouts;
}
/**
* Adds the listeners to update on changes in the VGraph
* */
private function registerListeners():void {
_vgraph.addEventListener(VGraphEvent.LAYOUTER_CHANGED,refreshSelector);
}
]]>
</mx:Script>
</mx:ComboBox>