Icons.java

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package edu.rice.cs.hpc.viewer.resources;

import java.util.concurrent.atomic.AtomicBoolean;

import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.plugin.AbstractUIPlugin;

import edu.rice.cs.hpc.common.ui.BaseIconManager;
import edu.rice.cs.hpc.viewer.framework.Activator;

public class Icons  extends BaseIconManager
{
    final static public String Image_CallFrom = "CallFrom.gif";
    final static public String Image_CallTo = "CallTo.gif";
    final static public String Image_CallFromDisabled = "CallFromDisabled.gif";
    final static public String Image_CallToDisabled = "CallToDisabled.gif";
    
    final static public String Image_InlineFrom = "CallFromInline.gif";
    final static public String Image_InlineTo = "CallToInline.gif";
    final static public String Image_InlineFromDisabled = "CallFromInlineDisabled.gif";
    final static public String Image_InlineToDisabled = "CallToInlineDisabled.gif";
    
    final static public String Image_ZoomIn = "ZoomIn.gif";
    final static public String Image_ZoomOut = "ZoomOut.gif";
    final static public String Image_Flatten = "Flatten.gif";
    final static public String Image_Unflatten = "Unflatten.gif";
    
    final static public String Image_CheckColumns = "checkColumns.gif";
    final static public String Image_FlameIcon = "flameIcon.gif";
    
    final static public String Image_FnMetric = "FnMetric.gif";
    final static public String Image_FontBigger = "FontBigger.gif";
    final static public String Image_FontSmaller = "FontSmaller.gif";
    final static public String Image_SaveCSV = "savecsv.gif";
    final static public String Image_Graph = "Graph.png";
    
    static private Icons __singleton=null;
    static private final AtomicBoolean isInitialized = new AtomicBoolean(false);
    
    /********
     * get the instance of the current icons class
     * We just want to make sure only ONE initialization for 
     * image creation and registration for each class.
     * 
     * Although initialization for each object doesn't harm, but
     * it's useless and time consuming 
     * 
     * @return
     ********/
    static public Icons getInstance() {
        if (Icons.__singleton == null) {
            Icons.__singleton = new Icons();
        }
        return Icons.__singleton;
    }   
    
    /*************
     * initialize images. The method only needs to be called once for the whole
     * window lifespan. Athough calling this multiple times is theoretically
     * harmless (never tried).
     * 
     * @param registry
     *************/
    public void init(ImageRegistry registry) {
        
        if (isInitialized.compareAndSet(false, true)) {
            registerImage(registry, getClass(), Image_CallFrom);
            registerImage(registry, getClass(), Image_CallTo);
            registerImage(registry, getClass(), Image_CallFromDisabled);
            registerImage(registry, getClass(), Image_CallToDisabled);
            
            registerImage(registry, getClass(), Image_InlineFrom);
            registerImage(registry, getClass(), Image_InlineTo);
            registerImage(registry, getClass(), Image_InlineFromDisabled);
            registerImage(registry, getClass(), Image_InlineToDisabled);
            
            registerImage(registry, getClass(), Image_ZoomIn);
            registerImage(registry, getClass(), Image_ZoomOut);
            registerImage(registry, getClass(), Image_Flatten);
            registerImage(registry, getClass(), Image_Unflatten);
            
            registerImage(registry, getClass(), Image_CheckColumns);
            registerImage(registry, getClass(), Image_FlameIcon);

            registerImage(registry, getClass(), Image_FnMetric);
            registerImage(registry, getClass(), Image_FontBigger);
            registerImage(registry, getClass(), Image_FontSmaller);
            registerImage(registry, getClass(), Image_SaveCSV);
            registerImage(registry, getClass(), Image_Graph);
        }
    }
    
    
    static public Image getImage(final String desc) {
        AbstractUIPlugin plugin = Activator.getDefault();
        return getImage(plugin, desc);
    }
}