source: trunk/gsdl3/src/java/org/greenstone/gsdl3/build/CollectionConstructor.java@ 5148

package org.greenstone.gsdl3.build;

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 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;
    
    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;
    }
    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;
    }
    public void setCollectionName(String coll_name) {
    this.collection_name = coll_name;
    }
    public void setProcessParams(Element params) {
    this.process_params = params;
    }
    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();
}