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DockingFrames is an open source Java Swing docking framework, licenced under LGPL 2.1. This is the same distribution as the original distribution (http://www.docking-frames.org/), only reinstalled in maven

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/*
 * Bibliothek - DockingFrames
 * Library built on Java/Swing, allows the user to "drag and drop"
 * panels containing any Swing-Component the developer likes to add.
 * 
 * Copyright (C) 2007 Benjamin Sigg
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Benjamin Sigg
 * [email protected]
 * CH - Switzerland
 */
package bibliothek.gui.dock.common.location;

import bibliothek.gui.dock.FlapDockStation;
import bibliothek.gui.dock.common.CLocation;
import bibliothek.gui.dock.common.mode.ExtendedMode;
import bibliothek.gui.dock.layout.DockableProperty;
import bibliothek.gui.dock.station.flap.FlapDockProperty;

/**
 * A location which represents a {@link FlapDockStation}.
 * @author Benjamin Sigg
 */
public class CFlapLocation extends CLocation{
	/** the parent of this location */
	private CLocation parent; 
	
	/**
	 * Creates a new location
	 */
	public CFlapLocation(){
		// nothing
	}
	
	/**
	 * Creates a new location
	 * @param parent
	 */
	public CFlapLocation( CLocation parent ){
		this.parent = parent;
	}
	
    /**
     * Creates a location to append children at the end of the station.
     * @return the location marking the last position
     */
    public CFlapIndexLocation append(){
        return insert( Integer.MAX_VALUE );
    }
    
    /**
     * Creates a location to insert children into the station.
     * @param index the exact position
     * @return a location marking the position index
     */
    public CFlapIndexLocation insert( int index ){
        return new CFlapIndexLocation( this, index );
    }

    /**
     * Gets the parent location of this location.
     * @return the parent location, can be null
     */
    public CLocation getParent(){
		return parent;
	}
    
	/**
	 * @deprecated see {@link CLocation#aside()} for an explanation.
	 */
	@Deprecated
    @Override
    public CLocation aside() {
        return this;
    }
    
    @Override
    public ExtendedMode findMode() {
    	if( parent != null ){
    		return parent.findMode();
    	}
    	
        return ExtendedMode.MINIMIZED;
    }
    
    @Override
    public String findRoot(){
    	if( parent != null ){
    		return parent.findRoot();
    	}
    	return null;
    }

    @Override
    public DockableProperty findProperty( DockableProperty successor ) {
    	if( successor == null ){
    		successor = new FlapDockProperty( Integer.MAX_VALUE );
    	}
    	
    	if( parent != null ){
    		return parent.findProperty( successor );
    	}
    	
    	return successor;
    }
    
    @Override
    public String toString(){
	    if( parent == null ){
	    	return "[flap]";
	    }
	    else{
	    	return parent.toString() + " [flap]";
	    }
    }
}