implementation of the "bozo filter" on a topic level, including a topic-level

"Manage" screen (to hang "Rename Topic" from later, too).

src/com/silverwrist/util/OptionSet.java

@@ -0,0 +1,146 @@
+/*
+ * The contents of this file are subject to the Mozilla Public License Version 1.1
+ * (the "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at <http://www.mozilla.org/MPL/>.
+ * 
+ * Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
+ * WARRANTY OF ANY KIND, either express or implied. See the License for the specific
+ * language governing rights and limitations under the License.
+ * 
+ * The Original Code is the Venice Web Communities System.
+ * 
+ * The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
+ * for Silverwrist Design Studios.  Portions created by Eric J. Bowersox are
+ * Copyright (C) 2001 Eric J. Bowersox/Silverwrist Design Studios.  All Rights Reserved.
+ * 
+ * Contributor(s): 
+ */
+package com.silverwrist.util;
+
+import java.util.BitSet;
+
+public class OptionSet extends BitSet
+{
+  /*--------------------------------------------------------------------------------
+   * Static data members
+   *--------------------------------------------------------------------------------
+   */
+
+  private static final String ALPHA = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
+                                    + "!#$%&()*+,-./:;<=>?@[]^_`{|}~";
+
+  /*--------------------------------------------------------------------------------
+   * Constructors
+   *--------------------------------------------------------------------------------
+   */
+
+  public OptionSet()
+  {
+    super();
+
+  } // end constructor
+
+  public OptionSet(int nbits)
+  {
+    super(Math.min(nbits,ALPHA.length()));
+
+  } // end constructor
+
+  public OptionSet(char[] options)
+  {
+    super();  // initialize all bits to 0
+    for (int i=0; i<options.length; i++)
+    { // look at all the chars in the option string and set bits accordingly
+      int ndx = ALPHA.indexOf(options[i]);
+      if (ndx>=0)
+	super.set(ndx);
+
+    } // end for
+
+  } // end constructor
+
+  public OptionSet(String options)
+  {
+    this(options.toCharArray());
+
+  } // end constructor
+
+  private StringBuffer asStringBuffer()
+  {
+    StringBuffer b = new StringBuffer();
+    for (int i=0; i<super.length(); i++)
+      if (super.get(i))
+	b.append(ALPHA.charAt(i));
+    return b;
+
+  } // end asStringBuffer
+
+  /*--------------------------------------------------------------------------------
+   * Overrides from class BitSet
+   *--------------------------------------------------------------------------------
+   */
+
+  public void clear(int bitIndex)
+  {
+    if (bitIndex>=ALPHA.length())
+      throw new IndexOutOfBoundsException();
+    super.clear(bitIndex);
+
+  } // end clear
+
+  public boolean get(int bitIndex)
+  {
+    if (bitIndex>=ALPHA.length())
+      throw new IndexOutOfBoundsException();
+    return super.get(bitIndex);
+
+  } // end get
+
+  public void set(int bitIndex)
+  {
+    if (bitIndex>=ALPHA.length())
+      throw new IndexOutOfBoundsException();
+    super.set(bitIndex);
+
+  } // end set
+
+  /*--------------------------------------------------------------------------------
+   * External operations
+   *--------------------------------------------------------------------------------
+   */
+
+  public void assign(char[] options)
+  {
+    int i;
+    for (i=0; i<super.length(); i++)
+      super.clear(i);
+
+    for (i=0; i<options.length; i++)
+    { // look at all the chars in the option string and set bits accordingly
+      int ndx = ALPHA.indexOf(options[i]);
+      if (ndx>=0)
+	super.set(ndx);
+
+    } // end for
+
+  } // end assign
+
+  public void assign(String options)
+  {
+    assign(options.toCharArray());
+
+  } // end assign
+
+  public char[] asCharArray()
+  {
+    return asStringBuffer().toString().toCharArray();
+
+  } // end asCharArray
+
+  public String asString()
+  {
+    return asStringBuffer().toString();
+
+  } // end asString
+
+} // end class OptionSet

src/com/silverwrist/venice/core/TopicContext.java

@@ -90,5 +90,13 @@ public interface TopicContext
 
   public abstract List getActiveReaders() throws DataException, AccessError;
 
+  public abstract boolean isBozo(int other_uid) throws DataException;
+
+  public abstract void setBozo(int other_uid, boolean bozo) throws DataException;
+
+  public abstract boolean canSetBozo(int other_uid);
+
+  public abstract List getBozos() throws DataException;
+
 } // end interface TopicContext
 

src/com/silverwrist/venice/core/impl/BackgroundConferencePurge.java

@@ -96,6 +96,7 @@ class BackgroundConferencePurge implements Runnable
       { // delete the topic header and settings rows first
 	stmt.executeUpdate("DELETE FROM topics WHERE topicid = " + topicids[i] + ";");
 	stmt.executeUpdate("DELETE FROM topicsettings WHERE topicid = " + topicids[i] + ";");
+	stmt.executeUpdate("DELETE FROM topicbozo WHERE topicid = " + topicids[i] + ";");
 
 	// figure out how many posts are in this topic and create a BackgroundTopicPurge.
 	sql.setLength(0);

src/com/silverwrist/venice/core/impl/TopicUserContextImpl.java

@@ -54,6 +54,7 @@ class TopicUserContextImpl implements TopicContext
   private boolean hidden;
   private int unread;
   private boolean deleted = false;
+  private HashSet bozo_uids = null;
 
   /*--------------------------------------------------------------------------------
    * Constructors
@@ -99,6 +100,7 @@ class TopicUserContextImpl implements TopicContext
     this.name = name;
     this.hidden = false;
     this.unread = 1;
+    this.bozo_uids = new HashSet();  // no bozos yet
 
   } // end constructor
 
@@ -160,6 +162,18 @@ class TopicUserContextImpl implements TopicContext
 
   } // end refresh
 
+  private void loadBozo(Connection conn) throws SQLException
+  {
+    Statement stmt = conn.createStatement();
+    StringBuffer sql = new StringBuffer("SELECT bozo_uid FROM topicbozo WHERE topicid = ");
+    sql.append(topicid).append(" AND uid = ").append(conf.realUID()).append(';');
+    ResultSet rs = stmt.executeQuery(sql.toString());
+    bozo_uids = new HashSet();
+    while (rs.next())
+      bozo_uids.add(new Integer(rs.getInt(1)));
+
+  } // end loadBozo
+
   /*--------------------------------------------------------------------------------
    * Implementations from interface TopicContext
    *--------------------------------------------------------------------------------
@@ -874,7 +888,8 @@ class TopicUserContextImpl implements TopicContext
       Statement stmt = conn.createStatement();
 
       // lock some tables while we do the critical parts of the delete
-      stmt.executeUpdate("LOCK TABLES confs WRITE, topics WRITE, topicsettings WRITE, posts READ;");
+      stmt.executeUpdate("LOCK TABLES confs WRITE, topics WRITE, topicsettings WRITE, topicbozo WRITE, "
+			 + "posts READ;");
       try
       { // first delete the topic record itself
 	StringBuffer sql = new StringBuffer("DELETE FROM topics WHERE topicid = ");
@@ -886,6 +901,11 @@ class TopicUserContextImpl implements TopicContext
 	sql.append("DELETE FROM topicsettings WHERE topicid = ").append(topicid).append(';');
 	stmt.executeUpdate(sql.toString());
 
+	// and all topicbozo records
+	sql.setLength(0);
+	sql.append("DELETE FROM topicbozo WHERE topicid = ").append(topicid).append(';');
+	stmt.executeUpdate(sql.toString());
+
 	// and indicate that we updated the conference
 	conf.touchUpdate(conn,new java.util.Date());
 
@@ -1068,6 +1088,145 @@ class TopicUserContextImpl implements TopicContext
 
   } // end getActiveReaders
 
+  public boolean isBozo(int other_uid) throws DataException
+  {
+    if (deleted || conf.userIsAnonymous() || (other_uid==conf.realUID()))
+      return false;  // no-op
+
+    if (bozo_uids==null)
+    { // the bozo UIDs need to be loaded!
+      Connection conn = null;
+      try
+      { // load the bozo filter UIDs from the database
+	conn = datapool.getConnection();
+	loadBozo(conn);
+
+      } // end try
+      catch (SQLException e)
+      { // this becomes a DataException
+	logger.error("DB error getting bozo list: " + e.getMessage(),e);
+	throw new DataException("unable to get bozo filter listing: " + e.getMessage(),e);
+
+      } // end catch
+      finally
+      { // make sure we release the connection before we go
+	if (conn!=null)
+	  datapool.releaseConnection(conn);
+
+      } // end finally
+
+    } // end if
+
+    return bozo_uids.contains(new Integer(other_uid));
+
+  } // end isBozo
+
+  public void setBozo(int other_uid, boolean bozo) throws DataException
+  {
+    if (deleted || conf.userIsAnonymous() || (other_uid==conf.realUID()))
+      return;  // no-op
+
+    Connection conn = null;
+    try
+    { // figure out what to do here
+      conn = datapool.getConnection();
+      refresh(conn);
+      if (deleted)
+	return;          // one more check to make sure we're not deleted
+      if (bozo_uids==null)
+	loadBozo(conn);  // load the bozo filter if we don't already have it
+
+      Integer uid_key = new Integer(other_uid);
+      Statement stmt;
+      StringBuffer sql;
+      if (bozo)
+      { // this user is a bozo...
+	if (!(bozo_uids.contains(uid_key)))
+	{ // add them to the bozo list
+	  sql = new StringBuffer("INSERT INTO topicbozo (topicid, uid, bozo_uid) VALUES (");
+	  sql.append(topicid).append(", ").append(conf.realUID()).append(", ").append(other_uid).append(");");
+	  stmt = conn.createStatement();
+	  stmt.executeUpdate(sql.toString());
+	  bozo_uids.add(uid_key);
+
+	} // end if
+	// else this is a no-op
+
+      } // end if
+      else
+      { // this user is no longer a bozo
+	if (bozo_uids.contains(uid_key))
+	{ // remove them from the bozo list
+	  sql = new StringBuffer("DELETE FROM topicbozo WHERE topicid = ");
+	  sql.append(topicid).append(" AND uid = ").append(conf.realUID()).append(" AND bozo_uid = ");
+	  sql.append(other_uid).append(';');
+	  stmt = conn.createStatement();
+	  stmt.executeUpdate(sql.toString());
+	  bozo_uids.remove(uid_key);
+
+	} // end if
+	// else this is a no-op
+
+      } // end else
+
+    } // end try
+    catch (SQLException e)
+    { // this becomes a DataException
+      logger.error("DB error updating bozo list: " + e.getMessage(),e);
+      throw new DataException("unable to update bozo filter list: " + e.getMessage(),e);
+
+    } // end catch
+    finally
+    { // make sure we release the connection before we go
+      if (conn!=null)
+	datapool.releaseConnection(conn);
+
+    } // end finally
+
+  } // end setBozo
+
+  public boolean canSetBozo(int other_uid)
+  {
+    // 1. You can't set bozo filters on a deleted topic.
+    // 2. You can't set bozo filters if you're the anonymous user.
+    // 3. You can't bozo-filter yourself, silly.
+    return !(deleted || conf.userIsAnonymous() || (other_uid==conf.realUID()));
+
+  } // end canSetBozoFilter
+
+  public List getBozos() throws DataException
+  {
+    if (deleted || conf.userIsAnonymous())
+      return Collections.EMPTY_LIST;  // no-op
+
+    if (bozo_uids==null)
+    { // the bozo UIDs need to be loaded!
+      Connection conn = null;
+      try
+      { // load the bozo filter UIDs from the database
+	conn = datapool.getConnection();
+	loadBozo(conn);
+
+      } // end try
+      catch (SQLException e)
+      { // this becomes a DataException
+	logger.error("DB error getting bozo list: " + e.getMessage(),e);
+	throw new DataException("unable to get bozo filter listing: " + e.getMessage(),e);
+
+      } // end catch
+      finally
+      { // make sure we release the connection before we go
+	if (conn!=null)
+	  datapool.releaseConnection(conn);
+
+      } // end finally
+
+    } // end if
+
+    return Collections.unmodifiableList(new ArrayList(bozo_uids));
+
+  } // end getBozos
+
   /*--------------------------------------------------------------------------------
    * External operations usable only from within the package
    *--------------------------------------------------------------------------------

src/com/silverwrist/venice/servlets/ConfDisplay.java

@@ -364,12 +364,13 @@ public class ConfDisplay extends VeniceServlet
       PostInterval piv = getInterval(engine,request,topic,on_error);
       boolean read_new = do_readnew && !(StringUtil.isStringEmpty(request.getParameter("rnm")));
       boolean show_adv = !(StringUtil.isStringEmpty(request.getParameter("shac")));
+      boolean no_bozos = !(StringUtil.isStringEmpty(request.getParameter("nbz")));
 
       // Create the post display.
-      TopicPosts tpos = null;
       try
       { // create the display
-	tpos = new TopicPosts(request,engine,comm,conf,topic,piv.getFirst(),piv.getLast(),read_new,show_adv);
+	return new TopicPosts(request,engine,comm,conf,topic,piv.getFirst(),piv.getLast(),read_new,show_adv,
+			      no_bozos);
 
       } // end try
       catch (DataException de)
@@ -383,8 +384,6 @@ public class ConfDisplay extends VeniceServlet
 
       } // end catch
 
-      return tpos;
-
     } // end if (messages in a topic)
     else
     { // we're displaying the conference's topic list
@@ -403,8 +402,6 @@ public class ConfDisplay extends VeniceServlet
 
       if (read_new)
       { // we need to generate a TopicPosts view
-	TopicPosts tpos = null;
-
 	try
 	{ // generate a topic list first
 	  List topic_list = conf.getTopicList(opts.getViewOption(conf.getConfID()),
@@ -433,7 +430,7 @@ public class ConfDisplay extends VeniceServlet
 	  PostInterval piv = getInterval(engine,request,topic,on_error);
 
 	  // create the topic posts view
-	  return new TopicPosts(request,engine,comm,conf,topic,piv.getFirst(),piv.getLast(),true,false);
+	  return new TopicPosts(request,engine,comm,conf,topic,piv.getFirst(),piv.getLast(),true,false,false);
 
 	} // end try
 	catch (DataException de)

src/com/silverwrist/venice/servlets/PostOperations.java

@@ -133,6 +133,25 @@ public class PostOperations extends VeniceServlet
 
     } // end if ("scribble")
 
+    if (cmd.equals("BY") || cmd.equals("BN"))
+    { // we want to add or remove the bozo filter from the user here
+      try
+      { // attempt to set the bozo filter status
+	topic.setBozo(msg.getCreatorUID(),cmd.equals("BY"));
+
+	// go back and display stuff
+	throw new RedirectResult(location);
+
+      } // end try
+      catch (DataException de)
+      { // there was a database error
+	return new ErrorBox("Database Error","Database error setting filter status: " + de.getMessage(),
+			    location);
+
+      } // end catch
+
+    } // end if
+
     if (cmd.equals("NUKE"))
     { // nuking requires confirmation
       try

src/com/silverwrist/venice/servlets/TopicOperations.java

@@ -183,9 +183,51 @@ public class TopicOperations extends VeniceServlet
 
     } // end if (delete)
 
-    // unrecognized command
-    logger.error("invalid command to TopicOperations.doGet: " + cmd);
-    return new ErrorBox("Internal Error","Invalid command to TopicOperations.doGet",location);
+    if (cmd.equals("RB"))
+    { // "RB" = "Remove Bozo" (UID specified as parameter "u")
+      int uid = -1;
+      try
+      { // get the user ID to un-bozo
+	String foo = request.getParameter("u");
+	if (foo!=null)
+	  uid = Integer.parseInt(foo);
+
+      } // end try
+      catch (NumberFormatException nfe)
+      { // just don't do anything on error
+        uid = -1;
+
+      } // end catch
+
+      try
+      { // remove "bozo" status from this user
+	if (uid>0)
+	  topic.setBozo(uid,false);
+	setMyLocation(request,"topicops?" + locator);
+	return new ManageTopic(user,comm,conf,topic);
+
+      } // end try
+      catch (DataException de)
+      { // whoops!  this is a problem!
+	return new ErrorBox("Database Error","Database error removing filtered user: " + de.getMessage(),
+			    "topicops?" + locator);
+
+      } // end catch
+
+    } // end if (remove bozo)
+
+    // unrecognized command - load the "Manage Topic menu"
+    try
+    { // return that "Manage Topic" page
+      setMyLocation(request,"topicops?" + locator);
+      return new ManageTopic(user,comm,conf,topic);
+
+    } // end try
+    catch (DataException de)
+    { // whoops!  this is a problem!
+      return new ErrorBox("Database Error","Database error loading manage page: " + de.getMessage(),location);
+
+    } // end catch
 
   } // end doVeniceGet
 

src/com/silverwrist/venice/servlets/format/ManageTopic.java

@@ -0,0 +1,175 @@
+/*
+ * The contents of this file are subject to the Mozilla Public License Version 1.1
+ * (the "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at <http://www.mozilla.org/MPL/>.
+ * 
+ * Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
+ * WARRANTY OF ANY KIND, either express or implied. See the License for the specific
+ * language governing rights and limitations under the License.
+ * 
+ * The Original Code is the Venice Web Communities System.
+ * 
+ * The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
+ * for Silverwrist Design Studios.  Portions created by Eric J. Bowersox are
+ * Copyright (C) 2001 Eric J. Bowersox/Silverwrist Design Studios.  All Rights Reserved.
+ * 
+ * Contributor(s): 
+ */
+package com.silverwrist.venice.servlets.format;
+
+import java.util.*;
+import javax.servlet.*;
+import javax.servlet.http.*;
+import com.silverwrist.venice.core.*;
+
+public class ManageTopic implements JSPRender
+{
+  /*--------------------------------------------------------------------------------
+   * Static data members
+   *--------------------------------------------------------------------------------
+   */
+
+  // Attribute name for request attribute
+  protected static final String ATTR_NAME = "com.silverwrist.venice.content.ManageTopic";
+
+  /*--------------------------------------------------------------------------------
+   * Attributes
+   *--------------------------------------------------------------------------------
+   */
+
+  private CommunityContext comm;        // the community we're in
+  private ConferenceContext conf;       // the conference being listed
+  private TopicContext topic;           // the topic being managed
+  private String locator = null;        // the locator we use
+  private List bozos_list;              // the list of "bozo" users
+
+  /*--------------------------------------------------------------------------------
+   * Constructor
+   *--------------------------------------------------------------------------------
+   */
+
+  public ManageTopic(UserContext user, CommunityContext comm, ConferenceContext conf, TopicContext topic)
+      throws DataException
+  {
+    this.comm = comm;
+    this.conf = conf;
+    this.topic = topic;
+
+    // Load up the list of bozos, sorting them in user name order.
+    List bozo_uids = topic.getBozos();
+    if (bozo_uids.size()>0)
+    { // use a TreeMap to do the sorting
+      TreeMap load_map = new TreeMap();
+      Iterator it = bozo_uids.iterator();
+      while (it.hasNext())
+      { // fill in the list of user profiles
+	Integer uid = (Integer)(it.next());
+	UserProfile prof = user.getProfile(uid.intValue());
+	load_map.put(prof.getUserName(),prof);
+
+      } // end while
+
+      bozos_list = new ArrayList(load_map.values());
+
+    } // end if
+    else  // no bozos - just set empty list
+      bozos_list = Collections.EMPTY_LIST;
+
+  } // end constructor
+
+  /*--------------------------------------------------------------------------------
+   * External static functions
+   *--------------------------------------------------------------------------------
+   */
+
+  public static ManageTopic retrieve(ServletRequest request)
+  {
+    return (ManageTopic)(request.getAttribute(ATTR_NAME));
+
+  } // end retrieve
+
+  /*--------------------------------------------------------------------------------
+   * Implementations from interface VeniceContent
+   *--------------------------------------------------------------------------------
+   */
+
+  public String getPageTitle(RenderData rdat)
+  {
+    return "Manage Topic: " + topic.getName();
+
+  } // end getPageTitle
+
+  public String getPageQID()
+  {
+    return null;
+
+  } // end getPageQID
+
+  /*--------------------------------------------------------------------------------
+   * Implementations from interface JSPRender
+   *--------------------------------------------------------------------------------
+   */
+
+  public void store(ServletRequest request)
+  {
+    request.setAttribute(ATTR_NAME,this);
+
+  } // end store
+
+  public String getTargetJSPName()
+  {
+    return "manage_topic.jsp";
+
+  } // end getTargetJSPName
+
+  /*--------------------------------------------------------------------------------
+   * External operations
+   *--------------------------------------------------------------------------------
+   */
+
+  public int getCommunityID()
+  {
+    return comm.getCommunityID();
+
+  } // end getCommunityID
+
+  public int getConfID()
+  {
+    return conf.getConfID();
+
+  } // end getConfID
+
+  public int getTopicNumber()
+  {
+    return topic.getTopicNumber();
+
+  } // end getTopicID
+
+  public String getTopicName()
+  {
+    return topic.getName();
+
+  } // end getConfName
+
+  public String getLocator()
+  {
+    if (locator==null)
+      locator = "sig=" + comm.getCommunityID() + "&conf=" + conf.getConfID() + "&top="
+	               + topic.getTopicNumber();
+    return locator;
+
+  } // end getLocator
+
+  public int getNumBozos()
+  {
+    return bozos_list.size();
+
+  } // end getNumBozos()
+
+  public Iterator getBozosIterator()
+  {
+    return bozos_list.iterator();
+
+  } // end getBozosIterator
+
+} // end class ManageTopic

src/com/silverwrist/venice/servlets/format/TopicPosts.java

@@ -48,12 +48,14 @@ public class TopicPosts implements JSPRender
   private int first;
   private int last;
   private boolean show_advanced;
+  private boolean no_bozos;
   private int unread;
   private List messages;
   private TopicVisitOrder visit_order;
   private String topic_stem;
   private String topic_qid;
   private String cache_locator = null;
+  private HashSet bozo_uids = new HashSet();
 
   /*--------------------------------------------------------------------------------
    * Constructor
@@ -62,12 +64,12 @@ public class TopicPosts implements JSPRender
 
   public TopicPosts(HttpServletRequest request, VeniceEngine engine, CommunityContext comm,
 		    ConferenceContext conf, TopicContext topic, int first, int last, boolean read_new,
-		    boolean show_advanced) throws DataException, AccessError
+		    boolean show_advanced, boolean no_bozos) throws DataException, AccessError
   {
     if (logger.isDebugEnabled())
       logger.debug("TopicPosts: comm=" + comm.getCommunityID() + ", conf=" + conf.getConfID() + ", topic="
 		   + topic.getTopicNumber() + ", range=[" + first + ", " + last + "], rnm=" + read_new
-		   + ", shac=" + show_advanced);
+		   + ", shac=" + show_advanced + ", nbz=" + no_bozos);
     this.engine = engine;
     this.comm = comm;
     this.conf = conf;
@@ -75,6 +77,7 @@ public class TopicPosts implements JSPRender
     this.first = first;
     this.last = last;
     this.show_advanced = show_advanced;
+    this.no_bozos = no_bozos;
     this.unread = topic.getUnreadMessages();
     if (read_new)
       topic.setUnreadMessages(0);
@@ -88,6 +91,23 @@ public class TopicPosts implements JSPRender
     topic_stem = (String)(aliases.get(0)) + "." + topic.getTopicNumber() + ".";
     topic_qid = "go/" + comm.getAlias() + "!" + (String)(aliases.get(0)) + "." + topic.getTopicNumber();
 
+    // build up the list of users IN THIS VIEW that are bozo-filtered
+    HashSet saw_users = new HashSet();
+    Iterator it = messages.iterator();
+    while (it.hasNext())
+    { // get the user IDs of all messages on this page
+      TopicMessageContext msg = (TopicMessageContext)(it.next());
+      Integer the_uid = new Integer(msg.getCreatorUID());
+      if (!(saw_users.contains(the_uid)))
+      { // only check user IDs once per display operation
+	saw_users.add(the_uid);
+	if (topic.isBozo(the_uid.intValue()))
+	  bozo_uids.add(the_uid);
+
+      } // end if
+
+    } // end while
+
   } // end constructor
 
   /*--------------------------------------------------------------------------------
@@ -426,4 +446,28 @@ public class TopicPosts implements JSPRender
 
   } // end displayAttachmentInNewWindow
 
+  public boolean bozoFilterUser(int uid)
+  {
+    if (no_bozos)
+      return false;
+    else
+      return bozo_uids.contains(new Integer(uid));
+
+  } // end bozoFilterUser
+
+  public boolean showBozoFilteredIndicator(int uid)
+  {
+    if (no_bozos)
+      return bozo_uids.contains(new Integer(uid));
+    else
+      return false;
+
+  } // end showBozoFilteredIndicator
+
+  public boolean showFilterButton(int uid)
+  {
+    return !(bozo_uids.contains(new Integer(uid))) && topic.canSetBozo(uid);
+
+  } // end showFilterButton
+
 } // end class TopicPosts