source: main/trunk/gli/src/org/greenstone/gatherer/gui/PreviewButton.java

/**
 *#########################################################################
 *
 * 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.
 *
 * Copyright (C) 2006 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.webswing.toolkit.api.WebswingUtil;

import org.greenstone.gatherer.Configuration;
import org.greenstone.gatherer.Dictionary;
import org.greenstone.gatherer.Gatherer;
import org.greenstone.gatherer.collection.CollectionManager;
import org.greenstone.gatherer.greenstone.LocalLibraryServer;
import org.greenstone.gatherer.greenstone3.ServletConfiguration;
import org.greenstone.gatherer.util.StaticStrings;


public class PreviewButton 
    extends GLIButton {


    static final public int HOME_PAGE = 1;
    static final public int SEARCH_PAGE = 2;
    static final public int CLASSIFIER_PAGE = 3;
    static final public int DOCUMENT_PAGE = 4;

    private String preview_address;
    private int page_type = HOME_PAGE;
    private boolean variable_preview = false;
    
    private PreviewButtonOwner owner = null;
    public PreviewButton() {
    super();
    PreviewButtonListener pbl = new PreviewButtonListener();
    addActionListener(pbl);
    }
    public PreviewButton(String text, String tooltip) {
    super(text, tooltip);
    PreviewButtonListener pbl = new PreviewButtonListener();
    addActionListener(pbl);
    }

    public void setOwner(PreviewButtonOwner o) {
    owner = o;
    }
    public void setVariablePreview(boolean vp) {
    variable_preview = vp;
    }
    protected void configureHomeURL() {
    // we could be working with standalone collections or collection groups
    // so getting a collection-name may have a collection group prefix
    // This means CollectionManager.getLoadedCollectionName() needs to (and does) return (colgroup/)subcolname
    String collGroupWithName = CollectionManager.getLoadedCollectionName(true);

    // set up the home page for the current collection
    if (Gatherer.GS3) { // GLI for GS3 case
        if(Configuration.library_url == null) {// && !Configuration.fedora_info.isActive()) {
        Gatherer.missingEXEC();
        } 
        // if we now finally have a library URL, then continue with previewing
        if(Configuration.library_url != null) {
        // don't do anything fancy here
        preview_address = Configuration.library_url.toString() + Configuration.getServletPath() 
            + "?a=p&sa=about&c=" + collGroupWithName + "&l=" + Configuration.getLanguage();
        }
        return;
    }

    if(Gatherer.isLocalLibrary) {
        // check that the local library server is still running  - doesn't do anything if it's not supposed to be running
        // !! Don't like this here
        LocalLibraryServer.checkServerRunning();
        if(LocalLibraryServer.isURLPending()) {
        // Remind the user to press Enter Library, and return from this method
        JOptionPane.showMessageDialog(Gatherer.g_man,
                          Dictionary.get("General.LLS_Not_Started"), 
                          Dictionary.get("General.LLS_Not_Started_Title"),
                          JOptionPane.INFORMATION_MESSAGE);
        preview_address = null;
        return;   
        } 
    }
    // FLI or GLI for GS2 case (no library_url)
    if(Configuration.fedora_info.isActive()) {
        preview_address = Configuration.library_url.toString() + "?pid=true&title=true&terms=&query=pid~greenstone:"+collGroupWithName+"*&maxResults=20";
        //+ "&l=" + Configuration.getLanguage();
    } else {
        preview_address = Configuration.library_url.toString() + "?c=" + collGroupWithName + "&l=" + Configuration.getLanguage();
    }

    String main_args = "&a=p&p=about";
    /* this code is for switching the preview page depending on what 
        is currently active. but it is not complete yet
    String main_args = null;
    String params = null;
    if (!variable_preview || owner == null) {
        main_args = "&a=p&p=about";
    } else {
        page_type = owner.getPageType();
        params = owner.getPageParams();
        
        switch (page_type) {
        case SEARCH_PAGE:
        main_args = "&a=q&q="+params;
        break;
        case CLASSIFIER_PAGE:
        main_args = "&a=d&cl="+params;
        break;
        case DOCUMENT_PAGE:
          main_args = "&a=d&d="+params;
        break;
        case HOME_PAGE:
        default:
        main_args = "&a=p&p=about";
        
        
        }
        

    }
    */
    preview_address += main_args+StaticStrings.TIMESTAMP_ARGUMENT + System.currentTimeMillis();
    
    }
    private class PreviewButtonListener
    implements ActionListener {

    public void actionPerformed(ActionEvent event) {
        Gatherer.c_man.saveCollection();
        
        configureHomeURL();
        
        if (Gatherer.GS3) {
        // we need to rerun the convert in case the format stuff has changed
        //for gs3, we don't need this anymore: Gatherer.c_man.convertToGS3Collection();
        Gatherer.configGS3Server(Configuration.site_name, ServletConfiguration.ADD_COMMAND + Gatherer.c_man.getLoadedCollectionName());
        }

        if(preview_address != null) {
        if (Gatherer.isWebswing) {
            WebswingUtil.getWebswingApi().sendActionEvent("previewURL", preview_address, null);
        }
        else {
            Gatherer.spawnBrowser(preview_address);
        }
        }


        
    }

    }

}