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/jEdit/tags/jedit-4-2-pre4/org/gjt/sp/jedit/gui/TipOfTheDay.java

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Java | 166 lines | 105 code | 27 blank | 34 comment | 14 complexity | ae7e5f1a6192113a15285d49d15f9394 MD5 | raw file
  1/*
  2 * TipOfTheDay.java - Tip of the day window
  3 * :tabSize=8:indentSize=8:noTabs=false:
  4 * :folding=explicit:collapseFolds=1:
  5 *
  6 * Copyright (C) 2000, 2001, 2002 Slava Pestov
  7 *
  8 * This program is free software; you can redistribute it and/or
  9 * modify it under the terms of the GNU General Public License
 10 * as published by the Free Software Foundation; either version 2
 11 * of the License, or any later version.
 12 *
 13 * This program is distributed in the hope that it will be useful,
 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 16 * GNU General Public License for more details.
 17 *
 18 * You should have received a copy of the GNU General Public License
 19 * along with this program; if not, write to the Free Software
 20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 21 */
 22
 23package org.gjt.sp.jedit.gui;
 24
 25//{{{ Imports
 26import javax.swing.border.EmptyBorder;
 27import javax.swing.*;
 28import java.awt.event.*;
 29import java.awt.*;
 30import java.io.*;
 31import java.util.Random;
 32import org.gjt.sp.jedit.*;
 33import org.gjt.sp.util.Log;
 34//}}}
 35
 36public class TipOfTheDay extends EnhancedDialog
 37{
 38	//{{{ TipOfTheDay constructor
 39	public TipOfTheDay(View view)
 40	{
 41		super(view,jEdit.getProperty("tip.title"),false);
 42
 43		JPanel content = new JPanel(new BorderLayout(12,12));
 44		content.setBorder(new EmptyBorder(12,12,12,12));
 45		setContentPane(content);
 46
 47		JLabel label = new JLabel(jEdit.getProperty("tip.caption"));
 48		label.setFont(new Font("SansSerif",Font.PLAIN,24));
 49		label.setForeground(UIManager.getColor("Button.foreground"));
 50		content.add(BorderLayout.NORTH,label);
 51
 52		tipText = new JEditorPane();
 53		tipText.setEditable(false);
 54		tipText.setContentType("text/html");
 55
 56		nextTip();
 57
 58		JScrollPane scroller = new JScrollPane(tipText);
 59		scroller.setPreferredSize(new Dimension(150,150));
 60		content.add(BorderLayout.CENTER,scroller);
 61
 62		ActionHandler actionHandler = new ActionHandler();
 63
 64		Box buttons = new Box(BoxLayout.X_AXIS);
 65
 66		showNextTime = new JCheckBox(jEdit.getProperty("tip.show-next-time"),
 67			jEdit.getBooleanProperty("tip.show"));
 68		showNextTime.addActionListener(actionHandler);
 69		buttons.add(showNextTime);
 70
 71		buttons.add(Box.createHorizontalStrut(6));
 72		buttons.add(Box.createGlue());
 73
 74		nextTip = new JButton(jEdit.getProperty("tip.next-tip"));
 75		nextTip.addActionListener(actionHandler);
 76		buttons.add(nextTip);
 77
 78		buttons.add(Box.createHorizontalStrut(6));
 79
 80		close = new JButton(jEdit.getProperty("common.close"));
 81		close.addActionListener(actionHandler);
 82		buttons.add(close);
 83		content.getRootPane().setDefaultButton(close);
 84
 85		Dimension dim = nextTip.getPreferredSize();
 86		dim.width = Math.max(dim.width,close.getPreferredSize().width);
 87		nextTip.setPreferredSize(dim);
 88		close.setPreferredSize(dim);
 89
 90		content.add(BorderLayout.SOUTH,buttons);
 91
 92		setDefaultCloseOperation(DISPOSE_ON_CLOSE);
 93		pack();
 94		setLocationRelativeTo(view);
 95		show();
 96	} //}}}
 97
 98	//{{{ ok() method
 99	public void ok()
100	{
101		dispose();
102	} //}}}
103
104	//{{{ cancel() method
105	public void cancel()
106	{
107		dispose();
108	} //}}}
109
110	//{{{ Private members
111
112	//{{{ Instance variables
113	private JCheckBox showNextTime;
114	private JButton nextTip, close;
115	private JEditorPane tipText;
116	private int currentTip = -1;
117	//}}}
118
119	//{{{ nextTip() method
120	private void nextTip()
121	{
122		File[] tips = new File(MiscUtilities.constructPath(
123			jEdit.getJEditHome(),"doc","tips")).listFiles();
124		if(tips == null || tips.length == 0)
125		{
126			tipText.setText(jEdit.getProperty("tip.not-found"));
127			return;
128		}
129
130		int count = tips.length;
131
132		// so that we don't see the same tip again if the user
133		// clicks 'Next Tip'
134		int tipToShow = currentTip;
135		while(tipToShow == currentTip || !tips[tipToShow].getName().endsWith(".html"))
136			tipToShow = Math.abs(new Random().nextInt()) % count;
137		try
138		{
139			tipText.setPage(tips[tipToShow].toURL());
140		}
141		catch(Exception e)
142		{
143			Log.log(Log.ERROR,this,e);
144		}
145	} //}}}
146
147	//}}}
148
149	//{{{ ActionHandler class
150	class ActionHandler implements ActionListener
151	{
152		public void actionPerformed(ActionEvent evt)
153		{
154			Object source = evt.getSource();
155			if(source == showNextTime)
156			{
157				jEdit.setBooleanProperty("tip.show",showNextTime
158					.isSelected());
159			}
160			else if(source == nextTip)
161				nextTip();
162			else if(source == close)
163				dispose();
164		}
165	} //}}}
166}