jaxx.runtime.swing.list.ActionCheckListModel Maven / Gradle / Ivy

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Collection of swing widgets wrote with JAXX
There is a newer version: 3.0-alpha-1
/*
 * Copyright (c) 2009-2011, EzWare
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.Redistributions
 * in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.Neither the name of the
 * EzWare nor the names of its contributors may be used to endorse or
 * promote products derived from this software without specific prior
 * written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * %%Ignore-License%%
 */

package jaxx.runtime.swing.list;

import org.nuiton.decorator.Decorator;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import javax.swing.event.ListDataEvent;
import javax.swing.event.ListDataListener;

public class ActionCheckListModel implements CheckListModel {

    protected final List listeners = Collections.synchronizedList( new ArrayList());
	protected final CheckListModel originalModel;

    protected final CheckListAction actionCheckAll = new CheckListAction.CheckAll();
	
	@SuppressWarnings("unchecked")
    protected final List> actionItems = Arrays.asList( actionCheckAll );
    protected final Set> checks = new HashSet>();
	
	public ActionCheckListModel( final CheckListModel originalModel ) {
		
		if ( originalModel == null ) throw new NullPointerException();
		this.originalModel = originalModel;
		
		//react on original model changes
		this.originalModel.addListDataListener( new ListDataListener () {
			
			@Override
			public void intervalAdded(ListDataEvent e) {
				ListDataEvent event = toDecoratedEvent(e);
				for( ListDataListener l: listeners ) {
					l.intervalAdded(event);
				}
			}

			@Override
			public void intervalRemoved(ListDataEvent e) {
				ListDataEvent event = toDecoratedEvent(e);
				for( ListDataListener l: listeners ) {
					l.intervalRemoved(event);
				}
			}

			@Override
			public void contentsChanged(ListDataEvent e) {
				ListDataEvent event = toDecoratedEvent(e);
				for( ListDataListener l: listeners ) {
					l.contentsChanged(event);
				}
				if ( originalModel.getCheckedItems().size() < originalModel.getOriginalSize() ) {
					checks.remove(actionCheckAll);
				}  else {
					checks.add(actionCheckAll);
				}
				fireListDataChanged();
			}
		});
	}
	
	@Override
	public int getSize() {
		return originalModel.getSize() + actionItems.size();
	}

    @Override
    public int getOriginalSize() {
        return originalModel.getOriginalSize() + actionItems.size();
    }

	@Override
	public Object getElementAt(int index) {
		if ( isDecoratedIndex(index)) {
			return actionItems.get(index);
		} else {
			return originalModel.getElementAt( toOriginalIndex(index));
		}
	}
	
	private int toOriginalIndex( int index ) {
		return index - actionItems.size();
	}

	private int toDecoratedIndex( int index ) {
		return index + actionItems.size();
	}
	
	private boolean isDecoratedIndex( int index ) {
		int size = actionItems.size();
		return size > 0 && index >= 0 && index < size; 
	}

	
	@Override
	public void addListDataListener(ListDataListener l) {
		listeners.add(l);
	}

	@Override
	public void removeListDataListener(ListDataListener l) {
		listeners.remove(l);
	}
	
	private void fireListDataChanged() {
		ListDataEvent e = new ListDataEvent( this, 0, 0, getSize() );
		for( ListDataListener l: listeners ) {
			l.contentsChanged(e);
		}
	}

	private ListDataEvent toDecoratedEvent( ListDataEvent e ) {
		return new ListDataEvent(
			e.getSource(), 
			e.getType(), 
			toDecoratedIndex(e.getIndex0()), 
			toDecoratedIndex(e.getIndex1()));
	}
	
	@Override
	public boolean isCheckedIndex(int index) {
		if ( isDecoratedIndex(index)) {
			return checks.contains(actionItems.get(index));
		} else {
			return originalModel.isCheckedIndex( toOriginalIndex(index));
		}
		
	}

	@Override
	public void setCheckedIndex(int index, boolean value) {
		if ( isDecoratedIndex(index)) {
			CheckListAction item = actionItems.get(index);
			item.check(originalModel, value);
			if ( value ) checks.add(item); else checks.remove(item);
			fireListDataChanged();
		} else {
			 originalModel.setCheckedIndex( toOriginalIndex(index), value);
		}
	}

	@Override
	public Collection getCheckedItems() {
		return originalModel.getCheckedItems();
	}

	@Override
	public void setCheckedItems(Collection items) {
		originalModel.setCheckedItems(items);
	}

//    @Override
//    public void filter(String filter, Decorator