source: main/trunk/greenstone3/src/java/org/greenstone/gsdl3/build/CollectionConstructor.java@ 31578

package org.greenstone.gsdl3.build;

import java.io.File;

import org.greenstone.gsdl3.util.*;
//import java.util.Thread
import javax.swing.event.EventListenerList;
import org.w3c.dom.Element;

/** base class for collection construction */
public abstract class CollectionConstructor extends Thread
{

    /** the site in which building is to take place */
    protected String site_home = null;
    /** the name of the site */
    protected String site_name = null;
    /** the name of the collection */
    protected String collection_name = null;
    /** the stage of construction */
    protected int process_type = -1;
    /** other arguments/parameters for the construction process - in a paramList */
    protected Element process_params = null;
    /** the list of listeners for the process */
    protected EventListenerList listeners = null;
    /** A flag used to determine if this process has been asked to cancel. */
    protected boolean cancel = false; // Not really used (in any way that works)
    /** Stores the name of the manifest file (if one is needed) */
    protected String manifest_file = null;
    /** The URL params constructed as a query string, representing the CGI QUERY_STRING to the process */
    protected String query_string = null;

    public CollectionConstructor(String name)
    {
        super(name);
        this.listeners = new EventListenerList();
    }

    /**
     * carry out any set up stuff - returns false if couldn't set up properly
     */
    public boolean configure()
    {
        return true;
    }

    // this method never gets called. And, the way subclass GS2PerlConstructor.runPerlCommand() was originally
    // coded, setting cancel to true never had any effect anyway in stopping any perl command that was run.
    public void stopAction()
    {
        this.cancel = true;
    }

    public void setActionType(int type)
    {
        this.process_type = type;
    }

    public void setSiteHome(String site_home)
    {
        this.site_home = site_home;

        File siteHomeFile = new File(site_home);
        this.site_name = siteHomeFile.getName();
    }

    public void setCollectionName(String coll_name)
    {
        this.collection_name = coll_name;
    }

        public void setQueryString(String querystring)
    {
        this.query_string = querystring;
    }

    public void setProcessParams(Element params)
    {
        this.process_params = params;
    }
    
    public void setManifestFile(String manifestFile)
    {
        this.manifest_file = manifestFile;
    }

    public boolean addListener(ConstructionListener listener)
    {
        this.listeners.add(ConstructionListener.class, listener);
        return true;
    }

    public boolean removeListener(ConstructionListener listener)
    {
        this.listeners.remove(ConstructionListener.class, listener);
        return true;
    }

    protected void sendProcessBegun(ConstructionEvent evt)
    {
        Object[] concerned = this.listeners.getListenerList();
        for (int i = 0; i < concerned.length; i += 2)
        {
            if (concerned[i] == ConstructionListener.class)
            {
                ((ConstructionListener) concerned[i + 1]).processBegun(evt);
            }
        }
    }

    protected void sendProcessComplete(ConstructionEvent evt)
    {
        Object[] concerned = this.listeners.getListenerList();
        for (int i = 0; i < concerned.length; i += 2)
        {
            if (concerned[i] == ConstructionListener.class)
            {
                ((ConstructionListener) concerned[i + 1]).processComplete(evt);
            }
        }
    }

    protected void sendProcessStatus(ConstructionEvent evt)
    {

        Object[] concerned = this.listeners.getListenerList();
        for (int i = 0; i < concerned.length; i += 2)
        {
            if (concerned[i] == ConstructionListener.class)
            {
                ((ConstructionListener) concerned[i + 1]).processStatus(evt);
            }
        }
    }

    protected void sendMessage(ConstructionEvent evt)
    {

        Object[] concerned = this.listeners.getListenerList();
        for (int i = 0; i < concerned.length; i += 2)
        {
            if (concerned[i] == ConstructionListener.class)
            {
                ((ConstructionListener) concerned[i + 1]).message(evt);
            }
        }
    }

    abstract public void run();
}