alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

What this is

This file is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Other links

The source code

/*
 * PasteFromListDialog.java - Paste previous/paste deleted dialog
 * :tabSize=8:indentSize=8:noTabs=false:
 * :folding=explicit:collapseFolds=1:
 *
 * Copyright (C) 2003 Slava Pestov
 *
 * This program 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 2
 * of the License, or any later version.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

package org.gjt.sp.jedit.gui;

//{{{ Imports
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import org.gjt.sp.jedit.*;
//}}}

public class PasteFromListDialog extends EnhancedDialog
{
	//{{{ PasteFromListDialog constructor
	public PasteFromListDialog(String name, View view, ListModel model)
	{
		super(view,jEdit.getProperty(name + ".title"),true);
		this.view = view;

		JPanel content = new JPanel(new BorderLayout());
		content.setBorder(new EmptyBorder(12,12,12,12));
		setContentPane(content);
		JPanel center = new JPanel(new GridLayout(2,1,2,12));

		clips = new JList(model);
		clips.setCellRenderer(new Renderer());
		clips.setVisibleRowCount(12);

		clips.addMouseListener(new MouseHandler());
		clips.addListSelectionListener(new ListHandler());

		insert = new JButton(jEdit.getProperty("common.insert"));
		cancel = new JButton(jEdit.getProperty("common.cancel"));

		JLabel label = new JLabel(jEdit.getProperty(name + ".caption"));
		label.setBorder(new EmptyBorder(0,0,6,0));
		content.add(BorderLayout.NORTH,label);

		JScrollPane scroller = new JScrollPane(clips);
		scroller.setPreferredSize(new Dimension(500,150));
		center.add(scroller);

		clipText = new JTextArea();
		clipText.setEditable(false);
		scroller = new JScrollPane(clipText);
		scroller.setPreferredSize(new Dimension(500,150));
		center.add(scroller);

		content.add(center, BorderLayout.CENTER);

		JPanel panel = new JPanel();
		panel.setLayout(new BoxLayout(panel,BoxLayout.X_AXIS));
		panel.setBorder(new EmptyBorder(12,0,0,0));
		panel.add(Box.createGlue());
		panel.add(insert);
		panel.add(Box.createHorizontalStrut(6));
		panel.add(cancel);
		panel.add(Box.createGlue());
		content.add(panel, BorderLayout.SOUTH);

		if(model.getSize() >= 1)
			clips.setSelectedIndex(0);
		updateButtons();

		getRootPane().setDefaultButton(insert);
		insert.addActionListener(new ActionHandler());
		cancel.addActionListener(new ActionHandler());

		GUIUtilities.requestFocus(this,clips);

		pack();
		setLocationRelativeTo(view);
		setVisible(true);
	} //}}}

	//{{{ ok() method
	public void ok()
	{
		Object[] selected = clips.getSelectedValues();
		if(selected == null || selected.length == 0)
		{
			getToolkit().beep();
			return;
		}

		view.getTextArea().setSelectedText(getSelectedClipText());

		dispose();
	} //}}}

	//{{{ cancel() method
	public void cancel()
	{
		dispose();
	} //}}}

	//{{{ Private members

	//{{{ Instance variables
	private View view;
	private JList clips;
	private JTextArea clipText;
	private JButton insert;
	private JButton cancel;
	//}}}

	//{{{ getSelectedClipText()
	private String getSelectedClipText()
	{
		Object[] selected = clips.getSelectedValues();
		StringBuffer clip = new StringBuffer();
		for(int i = 0; i < selected.length; i++)
		{
			if(i != 0)
				clip.append('\n');
			clip.append(selected[i]);
		}
		return clip.toString();
	}
	//}}}

	//{{{ updateButtons() method
	private void updateButtons()
	{
		int selected = clips.getSelectedIndex();
		insert.setEnabled(selected != -1);
	} //}}}

	//{{{ showClipText() method
	private void showClipText()
	{
		Object[] selected = clips.getSelectedValues();
		if(selected == null || selected.length == 0)
			clipText.setText("");
		else
			clipText.setText(getSelectedClipText());
		clipText.setCaretPosition(0);
	}
	//}}}

	//}}}

	//{{{ Renderer class
	class Renderer extends DefaultListCellRenderer
	{
		String shorten(String item)
		{
			StringBuffer buf = new StringBuffer();
			// workaround for Swing rendering labels starting
			// with  using the HTML engine
			if(item.toLowerCase().startsWith(""))
				buf.append(' ');
			boolean ws = true;
			for(int i = 0; i < item.length(); i++)
			{
				char ch = item.charAt(i);
				if(Character.isWhitespace(ch))
				{
					if(ws)
						/* do nothing */;
					else
					{
						buf.append(' ');
						ws = true;
					}
				}
				else
				{
					ws = false;
					buf.append(ch);
				}
			}

			if(buf.length() == 0)
				return jEdit.getProperty("paste-from-list.whitespace");
			return buf.toString();
		}

		public Component getListCellRendererComponent(
			JList list, Object value, int index,
			boolean isSelected, boolean cellHasFocus)
		{
			super.getListCellRendererComponent(list,value,index,
				isSelected,cellHasFocus);

			setText(shorten(value.toString()));

			return this;
		}
	} //}}}

	//{{{ ActionHandler class
	class ActionHandler implements ActionListener
	{
		public void actionPerformed(ActionEvent evt)
		{
			Object source = evt.getSource();
			if(source == insert)
				ok();
			else if(source == cancel)
				cancel();
		}
	} //}}}

	//{{{ ListHandler class
	class ListHandler implements ListSelectionListener
	{
		//{{{ valueChanged() method
		public void valueChanged(ListSelectionEvent evt)
		{
			showClipText();
			updateButtons();
		} //}}}
	} //}}}

	//{{{ MouseHandler class
	class MouseHandler extends MouseAdapter
	{
		public void mouseClicked(MouseEvent evt)
		{
			if(evt.getClickCount() == 2)
				ok();
		}
	} //}}}
}
... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.