LibraryManager.java

/*******************************************************************************
 * Copyright (c) 2011 Nokia Corporation
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 * Comarch team - initial API and implementation
 *******************************************************************************/
package org.ned.client.library;

import com.sun.lwuit.events.DataChangedListener;
import com.sun.lwuit.events.SelectionListener;
import com.sun.lwuit.list.ListModel;
import java.util.Vector;

public class LibraryManager implements ListModel {

    private Vector librariesList = new Vector();
    private Vector selectionListeners = new Vector();
    private Vector dataChangeListeners = new Vector();
    private int selectedIndex = -1;

    public LibraryManager() {
    }

    public boolean addLibrary( NedLibrary lib ) {
        boolean retval = false;
        if ( findLibrary( lib.getId() ) == null ) {
            addItem( lib );
            retval = true;
        }
        //todo check duplicates;
        return retval;
    }

    public NedLibrary getLibraryByUrl( String url ) {
        //find libraries
        return null;
    }

    public NedLibrary findLibrary( String id ) {
        for ( int i = 0; i < librariesList.size(); i++ ) {
            if ( ((NedLibrary)librariesList.elementAt( i )).getId().equals( id ) ) {
                return (NedLibrary)librariesList.elementAt( i );
            }
        }
        return null;
    }

    public int findLibraryIndex( String id ) {
        for ( int i = 0; i < librariesList.size(); i++ ) {
            if ( ((NedLibrary)librariesList.elementAt( i )).getId().equals( id ) ) {
                return i;
            }
        }
        return -1;
    }

    void selectLibrary( String id ) {
        for ( int i = 0; i < librariesList.size(); i++ ) {
            if ( ((NedLibrary)librariesList.elementAt( i )).getId().equals( id ) ) {
                setSelectedIndex( i );
            }
        }
    }

    public Vector getLibrariesList() {
        return librariesList;
    }

    public Vector getVisibleLibrariesList() {
        Vector vLibraries = new Vector();
        for ( int i = 0; i < librariesList.size(); i++ ) {
            if ( ((NedLibrary)librariesList.elementAt( i )).getVisible() == true ) {
                vLibraries.addElement( (NedLibrary)librariesList.elementAt( i ) );
            }
        }
        return vLibraries;
    }

    public Object getItemAt( int i ) {
        return (i < librariesList.size() && i >= 0)
               ? librariesList.elementAt( i )
               : null;
    }

    public int getSize() {
        return librariesList.size();
    }

    public int getSelectedIndex() {
        return selectedIndex;
    }

    public NedLibrary getCurrentLibrary() {
        if ( librariesList.size() > 0 ) {
            return (NedLibrary)librariesList.elementAt( selectedIndex );
        } else {
            return null;
        }
    }

    public void setSelectedIndex( int i ) {
        for ( int j = 0; j < selectionListeners.size(); j++ ) {
            ((SelectionListener)selectionListeners.elementAt( j )).selectionChanged( selectedIndex, i );
        }
        selectedIndex = i;
    }

    public void addDataChangedListener( DataChangedListener dl ) {
        dataChangeListeners.addElement( dl );

    }

    public void removeDataChangedListener( DataChangedListener dl ) {
        dataChangeListeners.removeElement( dl );
    }

    public void addSelectionListener( SelectionListener sl ) {
        selectionListeners.addElement( sl );
    }

    public void removeSelectionListener( SelectionListener sl ) {
        selectionListeners.removeElement( sl );
    }

    public void addItem( Object o ) {
        librariesList.addElement( o );
        for ( int i = 0; i < dataChangeListeners.size(); i++ ) {
            ((DataChangedListener)dataChangeListeners.elementAt( i )).dataChanged( DataChangedListener.ADDED, librariesList.
                    size() - 1 );
        }
    }

    public void removeItem( int index ) {
        if ( index >= 0 && index < librariesList.size() ) {
            librariesList.removeElementAt( index );
            for ( int i = 0; i < dataChangeListeners.size(); i++ ) {
                ((DataChangedListener)dataChangeListeners.elementAt( i )).dataChanged( DataChangedListener.REMOVED, index );
            }
        }
    }
}