GlslShaderFileObserver.java

package net.java.nboglpack.glsleditor;

/**
 * Created on 26. March 2007, 00:49
 * 
 */

import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import net.java.nboglpack.glslcompiler.GLSLCompilerService;
import org.openide.loaders.DataObject;
import org.openide.util.Lookup;
import org.openide.util.RequestProcessor;

/**
 * Observes an DataObject for document updates and starts compilation automatically.
 * @author Michael Bien
 */
public class GlslShaderFileObserver implements DocumentListener {
    
 private final DataObject observedDao;
 private final static RequestProcessor RP = new RequestProcessor("compiler");
 private final RequestProcessor.Task compilerTask;
 private boolean runOnDocUpdate = true;
 private int compileDelay = 500;
    
    public GlslShaderFileObserver(DataObject dao) {
        observedDao = dao;
        
        compilerTask = RP.create(new Runnable() {
            public void run() {
                GLSLCompilerService compiler = Lookup.getDefault().lookup(GLSLCompilerService.class);
                compiler.compileShader(new DataObject[] {observedDao}, false);
            }
        });
        compilerTask.setPriority(Thread.MIN_PRIORITY);
    }

    
    // DocumentListener
    public void insertUpdate(DocumentEvent arg0) {
        if(runOnDocUpdate)
            runCompileTask();
    }
    public void removeUpdate(DocumentEvent arg0) {
        if(runOnDocUpdate)
            runCompileTask();
    }
    public void changedUpdate(DocumentEvent arg0) {
    }
    
    
    public final void runCompileTask() {
        compilerTask.schedule(compileDelay);
    }

    public void setCompileDelay(int compileDelay) {
        this.compileDelay = compileDelay;
    }

    public void setRunOnDocUpdate(boolean runOnDocUpdate) {
        this.runOnDocUpdate = runOnDocUpdate;
    }
    
}