panelmanager.java

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    /* CRMS, customer relationship management system
    Copyright (C) 2003  Service To Youth Council

    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.

    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.

    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    For further information contact the SYC ICT department on [e-mail]
    98 Kermode Street
    North Adelaide
    South Australia
    SA 5006 
    [phone]
    */
/*
 * PanelManager.java
 *
 * Created on 7 April 2003, 03:01
 */

package crms.applet;

import javax.swing.*;
import java.awt.*;
import java.applet.*;
import java.net.*;
import java.util.*;

import crms.util.*;
import crms.module.StaffModule;

/** Top level panel management class that controls the application state and swapping display panels.
 *
 * @author  dmurphy, tnichols
 */
public class PanelManager {
    
    private static PanelManager _instance = null;
    
    private JPanel parent = null;
    
    private CRMSPanel currentPanel = null;
    private CRMSPanel previousPanel = null;
    
    private AppletContext appletContext = null;
    private URL codeBase = null;
    private String userName = null;
    private String userKey = null;

	private String compose_url = null;

	// cache values
	ArrayList cache_uidlist = null;
    
    /** Creates a new instance of PanelManager */
    private PanelManager() {
    }
    
    
    public void setAuthenticatedUser(String username, String key) {
        this.userName = username;
        this.userKey = key;
    }
    
    public static PanelManager getInstance() {
        if (_instance == null) {
            _instance = new PanelManager();
        }
        return _instance;
    }
    
    public void setParentPanel(JPanel parentPanel) {
        parent = parentPanel;
        parent.setBackground(Color.WHITE);
        
        parent.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
        if (currentPanel != null) {
            previousPanel = currentPanel;
            parent.remove(currentPanel);
        }
    }
    
    public JPanel getParentPanel() {
        return parent;
    }
    
    public void activatePanel(CRMSPanel panel) {
        
        if (userName == null && userKey == null) {
            // User hasn't been authenticated - show error pane.   
            throw new RuntimeException("User hasn't been authenticated!");
        }
        System.out.println( "Activating panel: " + panel.getClass());
        
        parent.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
        if (currentPanel != null) {
            previousPanel = currentPanel;
            parent.remove(currentPanel);
        }
        parent.add(panel);
        currentPanel = panel;
        panel.setVisible(true);
        panel.init();
        panel.revalidate();
		parent.repaint(0, 0, 0, parent.getWidth(), parent.getHeight());
        parent.setCursor(Cursor.getDefaultCursor());
    }

    public void setAppletContext(AppletContext context) {
        this.appletContext = context;
    }
    
    public AppletContext getAppletContext() {
        return appletContext;
    }
    
    public void setCodeBase(URL codeBase) {
        this.codeBase = codeBase;
    }
    
    public URL getCodeBase() {
        return codeBase;
    }
    
    public String getAuthenticatedUser() {
        return userName;
    }

	/** Enable webmail composer functionality by passing in the URL to the compose page.
	 * @param new_url The base compose URL
	 */
	public void setComposeURL(String new_url) {
		compose_url = new_url;
	}

	/** Determine whether to show email UI elements.
	 * @return Whether or not the composer function is enabled.
	 */
	public boolean isComposerEnabled() {
		return compose_url != null;
	}

	/** Bring up a squirrelmail compose window.  The function opens a new window based on the 
	 * plugin applet URL. If running in standalone mode or no compose_url is set, this 
	 * functionality is disabled.
	 *
	 * @param email The email address to compose to
	 */
	public void showComposeWindow(String email) {
		// require an email address
		if (compose_url == null || compose_url == null) return;

		try {
			AppletContext ac = getInstance().getAppletContext();
			if (ac == null) return;

			ac.showDocument(new URL(compose_url + "?send_to=" + email), "_blank");
		} catch (Exception ex) {
			ex.printStackTrace();
		}
	}


	/** Prepare the cache of data that is used during the life of the applet.  Calling this function will initialise
	 * or update the cache of values used for things like auto-complete and so forth. */
	public void initCache() {
		Server server = ServerFactory.getInstance().getServer();
		ServerCommand command = new ServerCommand(StaffModule.STAFF_AUTO_LIST);

		// get the AUTO_LIST
		ServerResponse sr = server.sendCommand(command);
		cache_uidlist = (ArrayList)sr.getPart("uids");
	}

	/** Get the UID List (LDAP UID's). Do not modify this!
	 *
	 * @return ArrayList of strings storing the uid attributes only for all staff members.
	 */
	public ArrayList getUIDList() {
		return cache_uidlist;
	}
    
    
}