/**
 *#########################################################################
 *
 * A component of the Gatherer application, part of the Greenstone digital
 * library suite from the New Zealand Digital Library Project at the
 * University of Waikato, New Zealand.
 *
 * <BR><BR>
 *
 * Author: John Thompson, Greenstone Digital Library, University of Waikato
 *
 * <BR><BR>
 *
 * Copyright (C) 1999 New Zealand Digital Library Project
 *
 * <BR><BR>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * <BR><BR>
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * <BR><BR>
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *########################################################################
 */
package org.greenstone.gatherer.gui;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

import org.greenstone.gatherer.Dictionary;
import org.greenstone.gatherer.Gatherer;
import org.greenstone.gatherer.LocalLibraryServer;
import org.greenstone.gatherer.cdm.CollectionDesignManager;
import org.greenstone.gatherer.cdm.FormatManager;
import org.greenstone.gatherer.cdm.Format;
import org.greenstone.gatherer.cdm.Control;
import org.greenstone.gatherer.Configuration;
import org.greenstone.gatherer.shell.GShell;
import org.greenstone.gatherer.shell.GShellEvent;
import org.greenstone.gatherer.shell.GShellListener;

public class FormatPane 
    extends BaseConfigPane 
    implements PreviewButtonOwner,GShellListener{
    

    /** The button for viewing the collection. */
    private PreviewButton preview_button = null;
    private boolean buildCanceled = false;

    /** The constructor. */
    public FormatPane() {
	super();
	if (Gatherer.GS3) {
	    contents = new String []{ "CDM.GUI.General", "CDM.GUI.SearchMetadata", "CDM.GUI.Formats", "CDM.GUI.Translation" };
	} else {
	    contents = new String []{ "CDM.GUI.General", "CDM.GUI.SearchMetadata", "CDM.GUI.Formats", "CDM.GUI.Translation", "CDM.GUI.SuperCollection","CDM.GUI.Macros" };
	}
	JPanel side_panel = new JPanel();
	side_panel.setLayout(new BorderLayout());
	remove(tree_pane);
	side_panel.add(tree_pane, BorderLayout.CENTER);
	preview_button = new PreviewButton(Dictionary.get("CreatePane.Preview_Collection"), Dictionary.get("CreatePane.Preview_Collection_Tooltip"));
	preview_button.setEnabled(true);
	preview_button.setVariablePreview(true);
	preview_button.setOwner(this);



	preview_button.addActionListener(new ActionListener() {
		public void actionPerformed(ActionEvent event) {
 		    if (view != null) {
 			view.loseFocus();
		    }
	        
		    if (buildCanceled){
			WarningDialog dialog = new WarningDialog("warning.ShowPreviousCollection", Dictionary.get("ShowPreviousCollection.Title"), Dictionary.get("ShowPreviousCollection.Message"), null, false);
			dialog.display();
                        dialog.dispose();
		    }
		}

	    });
	side_panel.add(preview_button, BorderLayout.SOUTH);

	add(side_panel, BorderLayout.WEST);
    }

    public void gainFocus(){

  	if (Gatherer.c_man.built() && Configuration.library_url != null) {
	    preview_button.setEnabled(true);
	}  
	else{
	    preview_button.setEnabled(false); 
	}    
	
    }


    /** All implementation of GShellListener must include this method so the listener can be informed of messages from the GShell.
     * @param event A <strong>GShellEvent</strong> that contains, amoung other things, the message.
     */
    public synchronized void message(GShellEvent event) {
        // We don't care.  
    }

    
    /** All implementation of GShellListener must include this method so the listener can be informed when a GShell begins its task. Implementation side-effect, not actually used.
     * @param event A <strong>GShellEvent</strong> that contains details of the initial state of the <strong>GShell</strong> before task comencement.
     */
    public synchronized void processBegun(GShellEvent event) {
	buildCanceled = false;
    }
    
    /** All implementation of GShellListener must include this method so the listener can be informed when a GShell completes its task.
     * @param event A <strong>GShellEvent</strong> that contains details of the final state of the <strong>GShell</strong> after task completion.
     */
    public synchronized void processComplete(GShellEvent event) {
	if(event.getStatus() == GShell.OK) {
	    if(event.getType() == GShell.BUILD) {
	        buildCanceled = false;
	    }
	}	   
	else {
	    buildCanceled = true;   
	}
    }



    protected Control getSubControls(String type) {
	if(type.equals("CDM.GUI.General")) {
	    return CollectionDesignManager.general_manager.getControls();
	}
	if (type.equals("CDM.GUI.SearchMetadata")) {
	    return CollectionDesignManager.searchmetadata_manager.getControls();
	}
	if(type.equals("CDM.GUI.Formats")) {
	    return CollectionDesignManager.format_manager.getControls();
	}
	if (type.equals("CDM.GUI.Translation")) {
	    return CollectionDesignManager.translation_manager.getControls();
	}
	if (type.equals("CDM.GUI.Macros")) {
	    return CollectionDesignManager.macros_manager.getControls();
	}
	if(type.equals("CDM.GUI.SuperCollection")) {
	    return CollectionDesignManager.supercollection_manager.getControls();
	}
	return null;
    }

    private int page_type = PreviewButton.HOME_PAGE;
    private String page_params = "";
    public int getPageType() {
	System.err.println("view type = "+view_type);
	if (view_type.equals("CDM.GUI.General") || view_type.equals("CDM.GUI.Translation")) {
	    page_type = PreviewButton.HOME_PAGE;
	} else {
	    Format current_format = ((FormatManager.FormatControl)view).getCurrentFormat();
	    String feature_name = current_format.getFeatureName();
	    System.err.println("current format = "+feature_name);
	    if (feature_name.equals("")) {
		// must be modifying VList or HList
		// what should we do???
		page_type = PreviewButton.CLASSIFIER_PAGE;
		page_params = "CL1";
	    }
	    if (feature_name.startsWith("CL")) {
		page_type = PreviewButton.CLASSIFIER_PAGE;
		page_params = current_format.getFeatureName();
	    }
	    else if (feature_name.startsWith("Document")) {
		page_type = PreviewButton.DOCUMENT_PAGE;
		page_params = "HASH01e4da6100fdbb11b7ef244b";
	    } 
	    else if (feature_name.equals("Search")) {
		page_type = PreviewButton.SEARCH_PAGE;
		page_params = "the";
	    }
	}
	return page_type;
    }

    public String getPageParams() {
	return page_params;
    }

}