/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.designer.core.util;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.JPanel;
import org.pentaho.reporting.designer.core.DesignerContextComponent;
import org.pentaho.reporting.designer.core.ReportDesignerContext;
import org.pentaho.reporting.designer.core.editor.ReportDocumentContext;
import org.pentaho.reporting.designer.core.model.selection.DocumentContextSelectionModel;
import org.pentaho.reporting.designer.core.model.selection.ReportSelectionEvent;
import org.pentaho.reporting.designer.core.model.selection.ReportSelectionListener;
/**
* Although in the report designer the designer-context never changes, for better testability of the side-panels we
* allow the tests to define a own context and track that here.
*
* @author Thomas Morgner
*/
public abstract class SidePanel extends JPanel implements DesignerContextComponent
{
private class ActiveContextChangeHandler implements PropertyChangeListener
{
private ActiveContextChangeHandler()
{
}
/**
* This method gets called when a bound property is changed.
*
* @param evt A PropertyChangeEvent object describing the event source and the property that has changed.
*/
public void propertyChange(final PropertyChangeEvent evt)
{
updateActiveContext((ReportDocumentContext) evt.getOldValue(), (ReportDocumentContext) evt.getNewValue());
}
}
private class SelectionHandler implements ReportSelectionListener
{
public void selectionAdded(final ReportSelectionEvent event)
{
updateSelection(event.getModel());
}
public void selectionRemoved(final ReportSelectionEvent event)
{
updateSelection(event.getModel());
}
public void leadSelectionChanged(final ReportSelectionEvent event)
{
}
}
private ReportDesignerContext reportDesignerContext;
private ActiveContextChangeHandler contextChangeHandler;
private SelectionHandler selectionHandler;
/**
* Creates a new <code>JPanel</code> with a double buffer and a flow layout.
*/
protected SidePanel()
{
contextChangeHandler = new ActiveContextChangeHandler();
selectionHandler = new SelectionHandler();
}
public ReportDesignerContext getReportDesignerContext()
{
return reportDesignerContext;
}
public void setReportDesignerContext(final ReportDesignerContext reportDesignerContext)
{
final ReportDesignerContext oldContext = this.reportDesignerContext;
this.reportDesignerContext = reportDesignerContext;
updateDesignerContext(oldContext, reportDesignerContext);
}
protected void updateDesignerContext(final ReportDesignerContext oldContext, final ReportDesignerContext newContext)
{
final ReportDocumentContext oldRenderContext;
if (oldContext != null)
{
oldContext.removePropertyChangeListener(ReportDesignerContext.ACTIVE_CONTEXT_PROPERTY, contextChangeHandler);
oldRenderContext = oldContext.getActiveContext();
}
else
{
oldRenderContext = null;
}
final ReportDocumentContext newRenderContext;
if (newContext != null)
{
newContext.addPropertyChangeListener(ReportDesignerContext.ACTIVE_CONTEXT_PROPERTY, contextChangeHandler);
newRenderContext = newContext.getActiveContext();
}
else
{
newRenderContext = null;
}
updateActiveContext(oldRenderContext, newRenderContext);
}
protected void updateActiveContext(final ReportDocumentContext oldContext, final ReportDocumentContext newContext)
{
if (oldContext != null)
{
oldContext.getSelectionModel().removeReportSelectionListener(selectionHandler);
}
if (newContext != null)
{
newContext.getSelectionModel().addReportSelectionListener(selectionHandler);
updateSelection(newContext.getSelectionModel());
}
setEnabled(newContext != null);
}
@SuppressWarnings({"NoopMethodInAbstractClass"})
protected void updateSelection(final DocumentContextSelectionModel model)
{
}
}