From 494333ddde71222d2f3791df1f93de30901aa379 Mon Sep 17 00:00:00 2001
From: "Erik C. Thauvin" <erik@thauvin.net>
Date: Sun, 6 Mar 2005 16:28:56 +0000
Subject: [PATCH] Added threading while posting to del.icio.us.

---
 buildnum.properties                           |   4 +-
 mobibot.iws                                   | 193 +++++++++---------
 .../thauvin/erik/mobibot/DeliciousPoster.java |  25 ++-
 src/net/thauvin/erik/mobibot/Mobibot.java     |  12 +-
 src/net/thauvin/erik/mobibot/ReleaseInfo.java |  12 +-
 src/net/thauvin/erik/mobibot/SwingWorker.java | 131 ++++++++++++
 6 files changed, 265 insertions(+), 112 deletions(-)
 create mode 100644 src/net/thauvin/erik/mobibot/SwingWorker.java

diff --git a/buildnum.properties b/buildnum.properties
index 9823c71..88277bf 100644
--- a/buildnum.properties
+++ b/buildnum.properties
@@ -1,3 +1,3 @@
 #ANT Task: ch.oscg.jreleaseinfo.BuildNumberHandler
-#Sat Mar 05 13:36:00 PST 2005
-build.num.last=0
+#Sun Mar 06 08:26:51 PST 2005
+build.num.last=2
diff --git a/mobibot.iws b/mobibot.iws
index c6b7241..0f38f75 100644
--- a/mobibot.iws
+++ b/mobibot.iws
@@ -25,7 +25,7 @@
     <option name="MERGE_WITH_BRANCH2_NAME" value="HEAD" />
     <option name="RESET_STICKY" value="false" />
     <option name="CREATE_NEW_DIRECTORIES" value="true" />
-    <option name="DEFAULT_TEXT_FILE_SUBSTITUTION" value="v" />
+    <option name="DEFAULT_TEXT_FILE_SUBSTITUTION" value="kv" />
     <option name="PROCESS_UNKNOWN_FILES" value="false" />
     <option name="PROCESS_DELETED_FILES" value="false" />
     <option name="SHOW_EDIT_DIALOG" value="false" />
@@ -71,7 +71,7 @@
     <option name="PUT_FOCUS_INTO_COMMENT" value="false" />
     <option name="SHOW_CHECKIN_OPTIONS" value="true" />
     <option name="FORCE_NON_EMPTY_COMMENT" value="false" />
-    <option name="LAST_COMMIT_MESSAGE" value="Added support for del.icio.us" />
+    <option name="LAST_COMMIT_MESSAGE" value="Added delicious-java license.&#10;Updated ChangeLog." />
     <option name="SAVE_LAST_COMMIT_MESSAGE" value="true" />
     <option name="CHECKIN_DIALOG_SPLITTER_PROPORTION" value="0.8" />
     <option name="OPTIMIZE_IMPORTS_BEFORE_PROJECT_COMMIT" value="false" />
@@ -112,47 +112,54 @@
     <option name="HIDE_WARNINGS" value="false" />
   </component>
   <component name="FileEditorManager" split-orientation="vertical" split-proportion="0.5">
-    <first-group selected-file="file://$PROJECT_DIR$/ChangeLog.txt">
+    <first-group selected-file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/DeliciousPoster.java">
+      <entry file="file://$PROJECT_DIR$/ChangeLog.txt" pinned="false">
+        <provider selected="true" editor-type-id="text-editor">
+          <state line="8" column="34" selection-start="398" selection-end="398" vertical-scroll-proportion="0.14607948">
+            <folding />
+          </state>
+        </provider>
+      </entry>
       <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/Mobibot.java" pinned="false">
         <provider selected="true" editor-type-id="text-editor">
-          <state line="237" column="117" selection-start="5689" selection-end="5689" vertical-scroll-proportion="-4.324236">
+          <state line="2771" column="46" selection-start="64811" selection-end="64811" vertical-scroll-proportion="0.66593885">
             <folding>
               <element signature="imports" expanded="true" />
             </folding>
           </state>
         </provider>
       </entry>
-      <entry file="file://$PROJECT_DIR$/website/index.html" pinned="false">
+      <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/Weather.java" pinned="false">
         <provider selected="true" editor-type-id="text-editor">
-          <state line="45" column="160" selection-start="2992" selection-end="2992" vertical-scroll-proportion="0.70305675">
+          <state line="54" column="13" selection-start="2059" selection-end="2059" vertical-scroll-proportion="0.23737916">
             <folding />
           </state>
         </provider>
       </entry>
-      <entry file="file://$PROJECT_DIR$/ChangeLog.txt" pinned="false">
+      <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/FeedReader.java" pinned="false">
         <provider selected="true" editor-type-id="text-editor">
-          <state line="19" column="51" selection-start="759" selection-end="759" vertical-scroll-proportion="0.3469388">
-            <folding />
-          </state>
-        </provider>
-      </entry>
-      <entry file="file://$PROJECT_DIR$/build.properties" pinned="false">
-        <provider selected="true" editor-type-id="text-editor">
-          <state line="2" column="16" selection-start="44" selection-end="44" vertical-scroll-proportion="0.03651987">
+          <state line="109" column="52" selection-start="3133" selection-end="3133" vertical-scroll-proportion="0.5026853">
             <folding />
           </state>
         </provider>
       </entry>
       <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/DeliciousPoster.java" pinned="false">
         <provider selected="true" editor-type-id="text-editor">
-          <state line="49" column="13" selection-start="1911" selection-end="1911" vertical-scroll-proportion="0.2556391">
+          <state line="84" column="23" selection-start="2727" selection-end="2727" vertical-scroll-proportion="0.8947368">
             <folding />
           </state>
         </provider>
       </entry>
-      <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/EntryComment.java" pinned="false">
+      <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/SwingWorker.java" pinned="false">
         <provider selected="true" editor-type-id="text-editor">
-          <state line="53" column="13" selection-start="2016" selection-end="2016" vertical-scroll-proportion="0.32867885">
+          <state line="19" column="69" selection-start="616" selection-end="616" vertical-scroll-proportion="-1.1546724">
+            <folding />
+          </state>
+        </provider>
+      </entry>
+      <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/CurrencyConverter.java" pinned="false">
+        <provider selected="true" editor-type-id="text-editor">
+          <state line="36" column="0" selection-start="1681" selection-end="1714" vertical-scroll-proportion="0.018558951">
             <folding>
               <element signature="imports" expanded="true" />
             </folding>
@@ -166,13 +173,6 @@
           </state>
         </provider>
       </entry>
-      <entry file="file://$PROJECT_DIR$/build.xml" pinned="false">
-        <provider selected="true" editor-type-id="text-editor">
-          <state line="0" column="0" selection-start="0" selection-end="0" vertical-scroll-proportion="0.0">
-            <folding />
-          </state>
-        </provider>
-      </entry>
       <entry file="file://$PROJECT_DIR$/buildnum.properties" pinned="false">
         <provider selected="true" editor-type-id="text-editor">
           <state line="3" column="0" selection-start="98" selection-end="98" vertical-scroll-proportion="0.054779805">
@@ -198,22 +198,27 @@
   <component name="InspectionManager">
     <option name="AUTOSCROLL_TO_SOURCE" value="false" />
     <option name="SPLITTER_PROPORTION" value="0.452356" />
-    <profile name="Erik's Inspection Profile" />
+    <profile name="Erik's Inspections" />
   </component>
   <component name="J2EEProjectPane" />
   <component name="NamedScopeManager" />
   <component name="PackagesPane">
-    <expanded_node url="net.thauvin.erik.mobibot" module="mobibot" type="package" />
     <expanded_node url="net" module="mobibot" type="package" />
+    <expanded_node url="net.thauvin" module="mobibot" type="package" />
     <expanded_node url="" module="mobibot" type="module" />
     <expanded_node url="net.thauvin.erik" module="mobibot" type="package" />
-    <expanded_node url="net.thauvin" module="mobibot" type="package" />
+    <expanded_node url="net.thauvin.erik.mobibot" module="mobibot" type="package" />
   </component>
   <component name="ProjectPane">
-    <expanded_node url="file://$PROJECT_DIR$/website" module="mobibot" type="directory" />
-    <expanded_node url="file://$PROJECT_DIR$" module="mobibot" type="directory" />
+    <expanded_node url="file://$PROJECT_DIR$/src/net/thauvin" module="mobibot" type="directory" />
     <expanded_node url="" module="mobibot" type="module" />
+    <expanded_node url="file://$PROJECT_DIR$/src/net" module="mobibot" type="directory" />
+    <expanded_node url="file://$PROJECT_DIR$/src" module="mobibot" type="directory" />
+    <expanded_node url="file://$PROJECT_DIR$/src/net/thauvin/erik" module="mobibot" type="directory" />
     <expanded_node url="file://$PROJECT_DIR$/licenses" module="mobibot" type="directory" />
+    <expanded_node url="file://$PROJECT_DIR$" module="mobibot" type="directory" />
+    <expanded_node url="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot" module="mobibot" type="directory" />
+    <expanded_node url="file://$PROJECT_DIR$/website" module="mobibot" type="directory" />
   </component>
   <component name="ProjectView">
     <navigator currentView="ProjectPane" splitterProportion="0.5">
@@ -396,12 +401,12 @@
       <window_info id="CVS" active="false" anchor="bottom" auto_hide="false" internal_type="docked" type="docked" visible="false" weight="0.33024693" order="8" />
       <window_info id="Regex" active="false" anchor="bottom" auto_hide="false" internal_type="docked" type="docked" visible="false" weight="0.44135803" order="10" x="22" y="277" width="980" height="214" />
       <window_info id="TODO" active="false" anchor="bottom" auto_hide="false" internal_type="docked" type="docked" visible="false" weight="0.33024693" order="7" />
-      <window_info id="Project" active="true" anchor="left" auto_hide="false" internal_type="docked" type="docked" visible="true" weight="0.20531228" order="0" />
+      <window_info id="Project" active="true" anchor="left" auto_hide="false" internal_type="docked" type="docked" visible="true" weight="0.23977028" order="0" />
       <window_info id="Find" active="false" anchor="bottom" auto_hide="false" internal_type="docked" type="docked" visible="false" weight="0.33032128" order="1" />
       <window_info id="Jalopy" active="false" anchor="bottom" auto_hide="false" internal_type="docked" type="docked" visible="false" weight="0.33" order="8" />
       <window_info id="Structure" active="false" anchor="left" auto_hide="false" internal_type="docked" type="docked" visible="false" weight="0.27959183" order="1" />
       <window_info id="Messages" active="false" anchor="bottom" auto_hide="false" internal_type="docked" type="docked" visible="false" weight="0.33032128" order="9" />
-      <window_info id="Inspection" active="false" anchor="bottom" auto_hide="true" internal_type="docked" type="docked" visible="false" weight="0.39969134" order="6" />
+      <window_info id="Inspection" active="false" anchor="bottom" auto_hide="true" internal_type="docked" type="docked" visible="false" weight="0.3995984" order="6" />
       <window_info id="Profile" active="false" anchor="bottom" auto_hide="false" internal_type="docked" type="docked" visible="false" weight="0.33" order="8" />
       <window_info id="Dependency Viewer" active="false" anchor="bottom" auto_hide="false" internal_type="docked" type="docked" visible="false" weight="0.33" order="8" />
       <window_info id="Ant Build" active="false" anchor="right" auto_hide="false" internal_type="docked" type="docked" visible="true" weight="0.10193826" order="1" />
@@ -495,52 +500,29 @@
     </buildFile>
   </component>
   <component name="editorHistoryManager">
+    <entry file="file://$PROJECT_DIR$/website/index.html">
+      <provider selected="true" editor-type-id="text-editor">
+        <state line="45" column="160" selection-start="2992" selection-end="2992" vertical-scroll-proportion="0.7169615">
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/build.properties">
+      <provider selected="true" editor-type-id="text-editor">
+        <state line="2" column="16" selection-start="44" selection-end="44" vertical-scroll-proportion="0.034836065">
+          <folding />
+        </state>
+      </provider>
+    </entry>
     <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/StockQuote.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state line="53" column="13" selection-start="2029" selection-end="2029" vertical-scroll-proportion="0.33333334">
+        <state line="44" column="0" selection-start="1838" selection-end="1838" vertical-scroll-proportion="0.16433942">
           <folding>
             <element signature="imports" expanded="true" />
           </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/Weather.java">
-      <provider selected="true" editor-type-id="text-editor">
-        <state line="54" column="13" selection-start="2059" selection-end="2059" vertical-scroll-proportion="0.33333334">
-          <folding />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/CurrencyConverter.java">
-      <provider selected="true" editor-type-id="text-editor">
-        <state line="63" column="13" selection-start="2150" selection-end="2150" vertical-scroll-proportion="-3.9424703">
-          <folding>
-            <element signature="imports" expanded="true" />
-          </folding>
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/logs/2004-11-03.xml">
-      <provider selected="true" editor-type-id="text-editor">
-        <state line="0" column="0" selection-start="0" selection-end="0" vertical-scroll-proportion="0.0">
-          <folding />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/EntryLink.java">
-      <provider selected="true" editor-type-id="text-editor">
-        <state line="55" column="13" selection-start="2026" selection-end="2026" vertical-scroll-proportion="0.42857143">
-          <folding />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/DeliciousPoster.java">
-      <provider selected="true" editor-type-id="text-editor">
-        <state line="49" column="13" selection-start="1911" selection-end="1911" vertical-scroll-proportion="0.2556391">
-          <folding />
-        </state>
-      </provider>
-    </entry>
     <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/EntryComment.java">
       <provider selected="true" editor-type-id="text-editor">
         <state line="53" column="13" selection-start="2016" selection-end="2016" vertical-scroll-proportion="0.32867885">
@@ -564,29 +546,6 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/website/index.html">
-      <provider selected="true" editor-type-id="text-editor">
-        <state line="45" column="160" selection-start="2992" selection-end="2992" vertical-scroll-proportion="0.70305675">
-          <folding />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/Mobibot.java">
-      <provider selected="true" editor-type-id="text-editor">
-        <state line="237" column="117" selection-start="5689" selection-end="5689" vertical-scroll-proportion="-4.324236">
-          <folding>
-            <element signature="imports" expanded="true" />
-          </folding>
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/build.properties">
-      <provider selected="true" editor-type-id="text-editor">
-        <state line="2" column="16" selection-start="44" selection-end="44" vertical-scroll-proportion="0.03651987">
-          <folding />
-        </state>
-      </provider>
-    </entry>
     <entry file="file://$PROJECT_DIR$/.cvsignore">
       <provider selected="true" editor-type-id="text-editor">
         <state line="0" column="0" selection-start="0" selection-end="0" vertical-scroll-proportion="0.0">
@@ -603,7 +562,53 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/ChangeLog.txt">
       <provider selected="true" editor-type-id="text-editor">
-        <state line="19" column="51" selection-start="759" selection-end="759" vertical-scroll-proportion="0.3469388">
+        <state line="8" column="34" selection-start="398" selection-end="398" vertical-scroll-proportion="0.14607948">
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/Weather.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state line="54" column="13" selection-start="2059" selection-end="2059" vertical-scroll-proportion="0.23737916">
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/FeedReader.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state line="109" column="52" selection-start="3133" selection-end="3133" vertical-scroll-proportion="0.5026853">
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/CurrencyConverter.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state line="36" column="0" selection-start="1681" selection-end="1714" vertical-scroll-proportion="0.018558951">
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/Mobibot.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state line="2771" column="46" selection-start="64811" selection-end="64811" vertical-scroll-proportion="0.66593885">
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/SwingWorker.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state line="19" column="69" selection-start="616" selection-end="616" vertical-scroll-proportion="-1.1546724">
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/net/thauvin/erik/mobibot/DeliciousPoster.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state line="84" column="23" selection-start="2727" selection-end="2727" vertical-scroll-proportion="0.8947368">
           <folding />
         </state>
       </provider>
diff --git a/src/net/thauvin/erik/mobibot/DeliciousPoster.java b/src/net/thauvin/erik/mobibot/DeliciousPoster.java
index 9eb1029..08235a3 100644
--- a/src/net/thauvin/erik/mobibot/DeliciousPoster.java
+++ b/src/net/thauvin/erik/mobibot/DeliciousPoster.java
@@ -71,9 +71,18 @@ public class DeliciousPoster
 	 * @param entry    The entry to add.
 	 * @param extended The del.icio.us extended data.
 	 */
-	public final void addPost(EntryLink entry, String extended)
+	public final void addPost(final EntryLink entry, final String extended)
 	{
-		_delicious.addPost(entry.getLink(), entry.getTitle(), extended, _tags, entry.getDate());
+		final SwingWorker worker = new SwingWorker()
+		{
+			public Object construct()
+			{
+				return new Boolean(_delicious.addPost(entry.getLink(), entry.getTitle(), extended, _tags,
+													  entry.getDate()));
+			}
+		};
+
+		worker.start();
 	}
 
 	/**
@@ -81,8 +90,16 @@ public class DeliciousPoster
 	 *
 	 * @param entry The entry to delete.
 	 */
-	public final void deletePost(EntryLink entry)
+	public final void deletePost(final EntryLink entry)
 	{
-		_delicious.deletePost(entry.getLink());
+		final SwingWorker worker = new SwingWorker()
+		{
+			public Object construct()
+			{
+				return new Boolean(_delicious.deletePost(entry.getLink()));
+			}
+		};
+
+		worker.start();
 	}
 }
diff --git a/src/net/thauvin/erik/mobibot/Mobibot.java b/src/net/thauvin/erik/mobibot/Mobibot.java
index 09a4c90..658e17c 100644
--- a/src/net/thauvin/erik/mobibot/Mobibot.java
+++ b/src/net/thauvin/erik/mobibot/Mobibot.java
@@ -1122,7 +1122,7 @@ public class Mobibot extends PircBot
 
 					if (_delicious != null)
 					{
-						_delicious.addPost(entry, postedBy(sender, channel));
+						_delicious.addPost(entry, postedBy(entry, channel));
 					}
 
 					saveEntries(isBackup);
@@ -1395,7 +1395,7 @@ public class Mobibot extends PircBot
 
 							if (_delicious != null)
 							{
-								_delicious.addPost(entry, postedBy(sender, channel));
+								_delicious.addPost(entry, postedBy(entry, channel));
 							}
 
 							send(getChannel(), buildLink(index, entry));
@@ -1421,7 +1421,7 @@ public class Mobibot extends PircBot
 
 								if (_delicious != null)
 								{
-									_delicious.addPost(entry, postedBy(sender, channel));
+									_delicious.addPost(entry, postedBy(entry, channel));
 								}
 
 								send(getChannel(), buildLink(index, entry));
@@ -2277,14 +2277,14 @@ public class Mobibot extends PircBot
 	/**
 	 * Returns he del.icio.us extended attribution line.
 	 *
-	 * @param  sender  The sender.
+	 * @param  entry  The entry.
 	 * @param  channel The channel
 	 *
 	 * @return The extended attribution line.
 	 */
-	private final String postedBy(String sender, String channel)
+	private String postedBy(EntryLink entry, String channel)
 	{
-		return "Posted by " + sender + " on " + channel + " (" + _ircServer + ')';
+		return "Posted by " + entry.getNick() + " on " + channel + " (" + _ircServer + ')';
 	}
 
 	/**
diff --git a/src/net/thauvin/erik/mobibot/ReleaseInfo.java b/src/net/thauvin/erik/mobibot/ReleaseInfo.java
index 28f2ad2..e51fbe1 100644
--- a/src/net/thauvin/erik/mobibot/ReleaseInfo.java
+++ b/src/net/thauvin/erik/mobibot/ReleaseInfo.java
@@ -1,5 +1,5 @@
 /* Created by JReleaseInfo AntTask from Open Source Competence Group */
-/* Creation date Sat Mar 05 13:36:00 PST 2005 */
+/* Creation date Sun Mar 06 08:26:51 PST 2005 */
 package net.thauvin.erik.mobibot;
 
 import java.util.Date;
@@ -12,21 +12,21 @@ import java.util.Date;
 public class ReleaseInfo {
 
 
-   /** buildDate (set during build process to 1110058560437L). */
-   private static Date buildDate = new Date(1110058560437L);
+   /** buildDate (set during build process to 1110126411140L). */
+   private static Date buildDate = new Date(1110126411140L);
 
    /**
-    * Get buildDate (set during build process to Sat Mar 05 13:36:00 PST 2005).
+    * Get buildDate (set during build process to Sun Mar 06 08:26:51 PST 2005).
     * @return Date buildDate
     */
    public static final Date getBuildDate() { return buildDate; }
 
 
    /**
-    * Get buildNumber (set during build process to 0).
+    * Get buildNumber (set during build process to 2).
     * @return int buildNumber
     */
-   public static final int getBuildNumber() { return 0; }
+   public static final int getBuildNumber() { return 2; }
 
 
    /** version (set during build process to "0.3"). */
diff --git a/src/net/thauvin/erik/mobibot/SwingWorker.java b/src/net/thauvin/erik/mobibot/SwingWorker.java
new file mode 100644
index 0000000..39bf290
--- /dev/null
+++ b/src/net/thauvin/erik/mobibot/SwingWorker.java
@@ -0,0 +1,131 @@
+package net.thauvin.erik.mobibot;
+
+import javax.swing.SwingUtilities;
+
+/**
+ * This is the 3rd version of SwingWorker (also known as
+ * SwingWorker 3), an abstract class that you subclass to
+ * perform GUI-related work in a dedicated thread.  For
+ * instructions on and examples of using this class, see:
+ * 
+ * http://java.sun.com/docs/books/tutorial/uiswing/misc/threads.html
+ *
+ * Note that the API changed slightly in the 3rd version:
+ * You must now invoke start() on the SwingWorker after
+ * creating it.
+ */
+public abstract class SwingWorker {
+    private Object value;  // see getValue(), setValue()
+
+    /** 
+     * Class to maintain reference to current worker thread
+     * under separate synchronization control.
+     */
+    private static class ThreadVar {
+        private Thread thread;
+        ThreadVar(Thread t) { thread = t; }
+        synchronized Thread get() { return thread; }
+        synchronized void clear() { thread = null; }
+    }
+
+    private ThreadVar threadVar;
+
+    /** 
+     * Get the value produced by the worker thread, or null if it 
+     * hasn't been constructed yet.
+     */
+    protected synchronized Object getValue() { 
+        return value; 
+    }
+
+    /** 
+     * Set the value produced by worker thread 
+     */
+    private synchronized void setValue(Object x) { 
+        value = x; 
+    }
+
+    /** 
+     * Compute the value to be returned by the <code>get</code> method. 
+     */
+    public abstract Object construct();
+
+    /**
+     * Called on the event dispatching thread (not on the worker thread)
+     * after the <code>construct</code> method has returned.
+     */
+    public void finished() {
+    }
+
+    /**
+     * A new method that interrupts the worker thread.  Call this method
+     * to force the worker to stop what it's doing.
+     */
+    public void interrupt() {
+        Thread t = threadVar.get();
+        if (t != null) {
+            t.interrupt();
+        }
+        threadVar.clear();
+    }
+
+    /**
+     * Return the value created by the <code>construct</code> method.  
+     * Returns null if either the constructing thread or the current
+     * thread was interrupted before a value was produced.
+     * 
+     * @return the value created by the <code>construct</code> method
+     */
+    public Object get() {
+        while (true) {  
+            Thread t = threadVar.get();
+            if (t == null) {
+                return getValue();
+            }
+            try {
+                t.join();
+            }
+            catch (InterruptedException e) {
+                Thread.currentThread().interrupt(); // propagate
+                return null;
+            }
+        }
+    }
+
+
+    /**
+     * Start a thread that will call the <code>construct</code> method
+     * and then exit.
+     */
+    public SwingWorker() {
+        final Runnable doFinished = new Runnable() {
+           public void run() { finished(); }
+        };
+
+        Runnable doConstruct = new Runnable() { 
+            public void run() {
+                try {
+                    setValue(construct());
+                }
+                finally {
+                    threadVar.clear();
+                }
+
+                SwingUtilities.invokeLater(doFinished);
+            }
+        };
+
+        Thread t = new Thread(doConstruct);
+        threadVar = new ThreadVar(t);
+    }
+
+    /**
+     * Start the worker thread.
+     */
+    public void start() {
+        Thread t = threadVar.get();
+        if (t != null) {
+            t.start();
+        }
+    }
+}