de.invation.code.toval.graphic.dialog.EnumChooserDialog Maven / Gradle / Ivy

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TOVAL comprises a set of java classes for common programming issues. It includes utils for arrays, lists, sets and collections for convenient handling and modification, but also support for mathematic definitions concerning logic (clauses + resolution) together with some algorithms for permutations, powersets and resolution. Additionally it contains a number of types for multisets, matrices with object keys and much more.

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package de.invation.code.toval.graphic.dialog;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Window;
import java.util.ArrayList;
import java.util.List;

import javax.swing.BorderFactory;
import javax.swing.DefaultListModel;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.ListSelectionModel;
import javax.swing.ScrollPaneConstants;
import javax.swing.border.Border;

import de.invation.code.toval.graphic.renderer.AlternatingRowColorListCellRenderer;
import de.invation.code.toval.validate.ParameterException;
import de.invation.code.toval.validate.Validate;


public class EnumChooserDialog> extends AbstractDialog> {
	
	private static final long serialVersionUID = 8280110976725420192L;
	
	public static final Border DEFAULT_BORDER = BorderFactory.createEmptyBorder(5, 5, 5, 5);
	public static final int DEFAULT_SELECTION_MODE = ListSelectionModel.SINGLE_SELECTION;

	private DefaultListModel enumListModel = new DefaultListModel();
	private Class enumeration;
	private int selectionMode;
	private JList enumList;
	
	protected EnumChooserDialog(Window owner, String title, Class enumeration) throws Exception {
		super(owner, title);
		setPossibleValues(enumeration);
	}
	
	protected EnumChooserDialog(Window owner, String title, Class enumeration, int selectionMode) {
		super(owner, title);
		setPossibleValues(enumeration);
		this.selectionMode = selectionMode;
	}
	
	private void setPossibleValues(Class enumeration) throws ParameterException{
		Validate.notNull(enumeration);
		this.enumeration = enumeration;
	}

	@Override
	protected void addComponents() throws Exception {
		mainPanel().setLayout(new BorderLayout());
		
		JScrollPane scrollPane = new JScrollPane(getValueList());
		scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
		scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
		mainPanel().add(scrollPane);
	}

	@SuppressWarnings("unchecked")
	@Override
	protected void okProcedure() {
		if(!enumListModel.isEmpty()){
			List values = new ArrayList();
			for(Object o: enumList.getSelectedValues())
				values.add((E) o);
			setDialogObject(values);
			super.okProcedure();
		} else {
			JOptionPane.showMessageDialog(EnumChooserDialog.this, "Value list is empty.", "Invalid Parameter", JOptionPane.ERROR_MESSAGE);
		}
	}

	@Override
	protected void setTitle() {}
	
	private JList getValueList(){
		if(enumList == null){
			enumList = new JList(enumListModel);
			enumList.setCellRenderer(new AlternatingRowColorListCellRenderer());
			enumList.setFixedCellHeight(20);
			enumList.setVisibleRowCount(10);
			enumList.setPreferredSize(new Dimension(200,100));
			enumList.getSelectionModel().setSelectionMode(selectionMode);
			enumList.setBorder(null);
			for(E possibleValue: enumeration.getEnumConstants()){
				enumListModel.addElement(possibleValue);
			}
		}
		return enumList;
	}
	
	public static > List showDialog(Window owner, String title, Class enumeration) throws Exception{
		EnumChooserDialog dialog = new EnumChooserDialog(owner, title, enumeration);
		dialog.setUpGUI();
		return dialog.getDialogObject();
	}
	
	public static > List showDialog(Window owner, String title, Class enumeration, int selectionMode) throws Exception{
		EnumChooserDialog dialog = new EnumChooserDialog(owner, title, enumeration, selectionMode);
		dialog.setUpGUI();
		return dialog.getDialogObject();
	}
	
}