src/org/un/cava/birdeye/ravis/components/ui/controls/layouterControls/NodeSpacing.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
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* 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,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
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-->
<mx:VBox xmlns:mx="http://www.adobe.com/2006/mxml">
<mx:Label
id="bsliderlabel"
toolTip="Change the node spacing in Hierarchical"
text="Hierarchical Node Spacing"
fontSize="9"
textAlign="center"
/>
<mx:HSlider
tickInterval="20"
width="95%"
id="bslider"
value="160"
minimum="0"
maximum="200"
liveDragging="true"
change="updateNodeSpacing()"
/>
<mx:Script>
<![CDATA[
import org.un.cava.birdeye.ravis.utils.LogUtil;
import org.un.cava.birdeye.ravis.graphLayout.visual.VisualGraph;
import org.un.cava.birdeye.ravis.utils.events.VGraphEvent;
import org.un.cava.birdeye.ravis.graphLayout.layout.HierarchicalLayouter;
import org.un.cava.birdeye.ravis.graphLayout.visual.IVisualGraph;
import org.un.cava.birdeye.ravis.graphLayout.layout.ILayoutAlgorithm;
private static const _LOG:String = "components.ui.controls.layouterControls.NodeSpacing";
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(bslider != null) {
if(e == true) {
bsliderlabel.setStyle("color",0x000000);
bslider.alpha=1;
} else {
bsliderlabel.setStyle("color",0xCCCCCC);
bslider.alpha=0.3;
}
}
/* call superclass (VBox) */
super.enabled = e;
/* if disabled remove from view and vice versa */
this.visible = e;
this.includeInLayout = e;
}
/**
* Event handler to be triggered in case the
* layouter in VGraph has changed.
* Since this control is valid for Hierarchical Layouter only,
* it will only be enabled in this case.
* */
public function layouterChanged(e:VGraphEvent = null):void {
var hlayouter:HierarchicalLayouter;
/* check if we have a layouter at all */
if(_vgraph == null || _vgraph.layouter == null) {
LogUtil.warn(_LOG, "Cannot apply NodeSpacing without vgraph or on null layouter");
return;
}
/* check if it is a supported layouter (currently Hierarchical only) */
if(_vgraph.layouter is HierarchicalLayouter) {
/* set the local layouter reference */
hlayouter = _vgraph.layouter as HierarchicalLayouter;
if(bslider != null) {
hlayouter.breadth = bslider.value;
}
hlayouter.layoutChanged = true;
/* yes, enable */
this.enabled = true;
} else {
/* no, so disable */
this.enabled = false;
}
}
/**
* updates the node spacing distance in the hierarchical
* layouter.
* */
public function updateNodeSpacing():void {
var hlayouter:HierarchicalLayouter;
if(bslider == null) {
return;
}
/* check if we have a layouter at all */
if(_vgraph == null || _vgraph.layouter == null) {
LogUtil.warn(_LOG, "Cannot apply NodeSpacing without vgraph or on null layouter");
return;
}
/* check if it is a supported layouter (currently Hierarchical only) */
if(!(_vgraph.layouter is HierarchicalLayouter)) {
LogUtil.warn(_LOG, "NodeSpacing is only available in HierarchicalLayouter");
return;
}
/* set the local layouter reference */
hlayouter = _vgraph.layouter as HierarchicalLayouter;
hlayouter.breadth = bslider.value;
hlayouter.layoutChanged = true;
_vgraph.draw();
}
/**
* This refreshes the current slider setting to
* the value from the current layouter.
* */
public function refreshSlider(e:VGraphEvent = null):void {
var hlayouter:HierarchicalLayouter;
if(bslider == null) {
return;
}
/* check if we have a layouter at all */
if(_vgraph == null || _vgraph.layouter == null) {
LogUtil.warn(_LOG, "Cannot update NodeSpacing without vgraph or from null layouter");
return;
}
/* check if it is a supported layouter (currently Hierarchical only) */
if(!(_vgraph.layouter is HierarchicalLayouter)) {
LogUtil.warn(_LOG, "NodeSpacing is only available in HierarchicalLayouter");
return;
}
/* refresh the bslider */
hlayouter = _vgraph.layouter as HierarchicalLayouter;
bslider.value = hlayouter.breadth;
}
/**
* Adds the listeners to update on changes in the VGraph
* */
private function registerListeners():void {
_vgraph.addEventListener(VGraphEvent.VGRAPH_CHANGED,refreshSlider);
_vgraph.addEventListener(VGraphEvent.LAYOUTER_CHANGED,layouterChanged);
}
]]>
</mx:Script>
</mx:VBox>