/*
* This file is part of WebLookAndFeel library.
*
* WebLookAndFeel library is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* WebLookAndFeel 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with WebLookAndFeel library. If not, see <http://www.gnu.org/licenses/>.
*/
package com.alee.extended.list;
import com.alee.laf.checkbox.WebCheckBoxStyle;
import com.alee.laf.list.WebListStyle;
import com.alee.laf.list.WebListUI;
import javax.swing.*;
import javax.swing.plaf.ListUI;
import java.awt.*;
import java.util.HashMap;
import java.util.Map;
/**
* Custom default checkbox list cell renderer for WebLookAndFeel.
*
* @author Mikle Garin
*/
public class WebCheckBoxListCellRenderer implements ListCellRenderer
{
/**
* Checkbox list elements cache.
*/
protected Map<String, WebCheckBoxListElement> elements = new HashMap<String, WebCheckBoxListElement> ();
/**
* Constructs default checkbox list cell renderer.
*/
public WebCheckBoxListCellRenderer ()
{
super ();
}
/**
* Returns list cell renderer component.
*
* @param list tree
* @param value cell value
* @param index cell index
* @param isSelected whether cell is selected or not
* @param cellHasFocus whether cell has focus or not
* @return cell renderer component
*/
@Override
public Component getListCellRendererComponent ( final JList list, final Object value, final int index, final boolean isSelected,
final boolean cellHasFocus )
{
// Cell data
final CheckBoxCellData data = ( CheckBoxCellData ) value;
// Actual renderer for cell
final WebCheckBoxListElement renderer = getElement ( data );
// Visual settings
renderer.setFont ( list.getFont () );
renderer.setEnabled ( list.isEnabled () );
renderer.setForeground ( isSelected ? list.getSelectionForeground () : list.getForeground () );
// Selection and text
renderer.setText ( data.getUserObject () == null ? "" : data.getUserObject ().toString () );
// Border
final ListUI lui = list.getUI ();
final int sw = lui instanceof WebListUI ? ( ( WebListUI ) lui ).getSelectionShadeWidth () : WebListStyle.selectionShadeWidth;
renderer.setMargin ( sw + 2, sw + 2, sw + 2, sw + 4 );
// Orientation
renderer.setComponentOrientation ( list.getComponentOrientation () );
return renderer;
}
/**
* Returns cached checkbox element for specified data.
*
* @param data data to process
* @return cached checkbox element
*/
public WebCheckBoxListElement getElement ( final CheckBoxCellData data )
{
final String key = data.getId ();
if ( elements.containsKey ( key ) )
{
final WebCheckBoxListElement element = elements.get ( key );
element.setSelected ( data.isSelected (), WebCheckBoxStyle.animated );
return element;
}
else
{
final WebCheckBoxListElement element = new WebCheckBoxListElement ();
element.setName ( "List.cellRenderer" );
element.setSelected ( data.isSelected (), false );
elements.put ( key, element );
return element;
}
}
}