/*MujMail - Simple mail client for J2MECopyright (C) 2003 Petr Spatka <petr.spatka@centrum.cz>Copyright (C) 2005 Pavel Machek <pavel@ucw.cz>Copyright (C) 2006 Nguyen Son Tung <n.sontung@gmail.com>This program is free software; you can redistribute it and/or modifyit under the terms of the GNU General Public License as published bythe 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 ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See theGNU General Public License for more details.You should have received a copy of the GNU General Public Licensealong with this program; if not, write to the Free SoftwareFoundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */package mujmail;import java.util.Hashtable;import java.util.Vector;/** Maps MailDB instances into PersistenBox instances that uses them */public class MailDBManager {    /** Flag signals if we want to print debug prints */    private static final boolean DEBUG = false; /// Debugging output for this file    private Hashtable/*<String, structDBList>*/ dbList = new Hashtable/*<String, structDBList>*/();        /**     * Gets MailDB with specified name (database name).     * If multiple boxes uses same database return      * one shared MailDB instance     *     * @param owner box that will uses this database     * @param name database name     */    public MailDB getMailDB( PersistentBox owner, String name) {        if (DEBUG) { System.out.println("DEBUG MailDBMAnager.getMailDB( " + owner.getDBFileName() + "," + name + ")"); }        // Try if folder exists        structDBList db = (structDBList)dbList.get(name);        if (db == null) { // Not created now --> create DB file and add into internal structures            db = new structDBList();            db.db = new MailDB(name);            db.owners = new Vector(1);            db.owners.addElement(owner);            dbList.put(name, db);        } else // entry exists        if ( db.owners.contains(owner) == false) {            db.owners.addElement(owner);        }        return db.db;    }        public void loadedDB(MailDB invoker) {        if (DEBUG) { System.out.println("DEBUG MailDBManager.loadedDB - " + invoker.getDBName());}        structDBList db = (structDBList)dbList.get( invoker.getDBName());        if (db == null) {            if (DEBUG) { System.out.println("DEBUG MailDBMAnager.loadedDB - unknown database " + invoker.getDBName()); }            return; // Not known database        }        // Notify all registered boxes        int size = db.owners.size();        for( int i = 0; i < size; i++) {            PersistentBox box = (PersistentBox)db.owners.elementAt(i);            box.loadedDB();        }    }        public void changeUnreadMails(MailDB invoker, int count) {        if (DEBUG) { System.out.println("DEBUG MailDBManager.changeUnreadMails( " + invoker.getDBName() + ", " + count + ")"); }        structDBList db = (structDBList)dbList.get( invoker.getDBName());        if (db == null) {            if (DEBUG) { System.out.println("DEBUG MailDBMAnager.changeUnreadMails - unknown database " + invoker.getDBName()); }            return; // Not known database        }        // Notify all registered InBoxes        int size = db.owners.size();        for( int i = 0; i < size; i++) {            Object box = db.owners.elementAt(i);            if (box instanceof InBox) {                // Inbox or user folder                ((InBox)box).changeUnreadMails(count);            }        }    }        /** Remove message from storages of all Boxes where message is stored */    public void removeMessage(MessageHeader header) {        if (DEBUG) { System.out.println("DEBUG MailDBManager.removeMessage( " + header + " ... " + header.getMailDB().getDBName() + ")"); }        structDBList db = (structDBList)dbList.get( header.getMailDB().getDBName());        if (db == null) {            if (DEBUG) { System.out.println("DEBUG MailDBMAnager.removeMessage - unknown database " + header.getMailDB().getDBName()); }            return; // Not known database        }        int size = db.owners.size();        if (DEBUG) { System.out.println("DEBUG MailDBMAnager.removeMessage - deleting from  " + size + " boxes."); }        for( int i = 0; i < size; i++) {            TheBox box = (TheBox)(db.owners.elementAt(i));            if (DEBUG) System.out.println("DEBUG MailDBMAnager.removeMessage - deleting from box " + box.toString());            box.getStorage().removeMessage(header);        }    }}class structDBList{    public MailDB   db;    public Vector /*<PersistentBox>*/ owners;        // Needed to know folders to call resort after loading completed};