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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
/*
* 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) 2009 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.action.panel;
import java.awt.GraphicsConfiguration;
import java.awt.Rectangle;
import java.util.ArrayList;
import java.util.List;
/**
* Abstract implementation of {@link PanelPopupWindow}, handles
* the {@link PanelPopupWindowListener}s.
* Subclasses should call {@link #validateBounds(Rectangle, GraphicsConfiguration)} before they get visible
* @author Benjamin Sigg
*/
public abstract class AbstractPanelPopupWindow implements PanelPopupWindow{
private List listeners = new ArrayList();
public void addListener( PanelPopupWindowListener listener ){
if( listener == null )
throw new IllegalArgumentException( "listener must not be null" );
listeners.add( listener );
}
public void removeListener( PanelPopupWindowListener listener ){
listeners.remove( listener );
}
/**
* Returns an array containing all the listeners of this {@link AbstractPanelPopupWindow}.
* @return all the listeners
*/
protected PanelPopupWindowListener[] listeners(){
return listeners.toArray( new PanelPopupWindowListener[ listeners.size() ] );
}
/**
* Informs all listeners that this window has been closed
*/
protected void fireClosed(){
for( PanelPopupWindowListener listener : listeners() ){
listener.closed( this );
}
}
/**
* Should be called before this window is made visible, ensure that the boundaries are valid.
* @param bounds the proposed boundaries
* @param configuration the screen on which this window is going to be visible, might be null
* @return the actual boundaries, can be null to indicate that bounds is valid
*/
protected Rectangle validateBounds( Rectangle bounds, GraphicsConfiguration configuration ){
if( configuration == null ){
return null;
}
Rectangle screen = configuration.getBounds();
bounds = new Rectangle( bounds );
bounds.width = Math.min( bounds.width, screen.width );
bounds.height = Math.min( bounds.height, screen.height );
bounds.x = Math.min( Math.max( bounds.x, screen.x ), screen.x + screen.width - bounds.width );
bounds.y = Math.min( Math.max( bounds.y, screen.y ), screen.y + screen.height - bounds.height );
return bounds;
}
}