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Java > Open Source Codes > org > gjt > sp > jedit > gui > TipOfTheDay


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
23 package org.gjt.sp.jedit.gui;
24
25 //{{{ Imports
26 import javax.swing.border.EmptyBorder JavaDoc;
27 import javax.swing.*;
28 import java.awt.event.*;
29 import java.awt.*;
30 import java.io.*;
31 import java.util.Random JavaDoc;
32 import org.gjt.sp.jedit.*;
33 import org.gjt.sp.util.Log;
34 //}}}
35
36 public 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 JavaDoc(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         setVisible(true);
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 JavaDoc().nextInt()) % count;
137         try
138         {
139             tipText.setPage(tips[tipToShow].toURL());
140         }
141         catch(Exception JavaDoc 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 JavaDoc 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 }
167
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