SLF4J Logging in DCC plugin.

dcc/src/com/dmdirc/addons/dcc/DCCManager.java

 import com.dmdirc.config.prefs.PreferencesType;
 import com.dmdirc.events.ClientPrefsOpenedEvent;
 import com.dmdirc.events.ServerCtcpEvent;
-import com.dmdirc.events.UserErrorEvent;
 import com.dmdirc.interfaces.CommandController;
 import com.dmdirc.interfaces.Connection;
 import com.dmdirc.interfaces.User;
 import com.dmdirc.interfaces.config.AggregateConfigProvider;
 import com.dmdirc.interfaces.config.ConfigProvider;
 import com.dmdirc.interfaces.config.IdentityController;
-import com.dmdirc.logger.ErrorLevel;
 import com.dmdirc.parser.interfaces.Parser;
 import com.dmdirc.plugins.PluginDomain;
 import com.dmdirc.plugins.PluginInfo;
 import javax.swing.JFileChooser;
 import javax.swing.JOptionPane;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import net.engio.mbassy.listener.Handler;
 
+import static com.dmdirc.util.LogUtils.USER_ERROR;
+
 /**
  * This plugin adds DCC to DMDirc.
  */
 @Singleton
 public class DCCManager {
 
+    private static final Logger LOG = LoggerFactory.getLogger(DCCManager.class);
     private final BackBufferFactory backBufferFactory;
     /** Our DCC Container window. */
     private PlaceholderContainer container;
                 "receive.savelocation"));
         if (dir.exists()) {
             if (!dir.isDirectory()) {
-                eventBus.publishAsync(new UserErrorEvent(ErrorLevel.LOW, null,
-                        "Unable to create download dir (file exists instead)", ""));
+                LOG.info(USER_ERROR, "Unable to create download dir (file exists instead)",
+                        new IllegalArgumentException("Directory is really a file"));
             }
         } else {
             try {
                 dir.mkdirs();
                 dir.createNewFile();
             } catch (IOException ex) {
-                eventBus.publishAsync(new UserErrorEvent(ErrorLevel.LOW, null,
-                        "Unable to create download dir", ""));
+                LOG.info(USER_ERROR, "Unable to create download dir",
+                        new IllegalArgumentException("Unable to create download dir"));
             }
         }
 

dcc/src/com/dmdirc/addons/dcc/ui/TransferPanel.java

 import com.dmdirc.addons.dcc.io.DCCTransfer;
 import com.dmdirc.addons.ui_swing.UIUtilities;
 import com.dmdirc.addons.ui_swing.components.frames.SwingFrameComponent;
-import com.dmdirc.events.UserErrorEvent;
 import com.dmdirc.interfaces.Connection;
 import com.dmdirc.interfaces.WindowModel;
-import com.dmdirc.logger.ErrorLevel;
 import com.dmdirc.parser.events.SocketCloseEvent;
 import com.dmdirc.parser.interfaces.Parser;
 import com.dmdirc.util.DateUtils;
 
 import net.miginfocom.swing.MigLayout;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import net.engio.mbassy.listener.Handler;
 
+import static com.dmdirc.util.LogUtils.USER_ERROR;
+
 /**
  * A panel for displaying the progress of DCC transfers.
  *
 public class TransferPanel extends JPanel implements ActionListener,
         DCCTransferHandler, SwingFrameComponent {
 
+    private static final Logger LOG = LoggerFactory.getLogger(TransferPanel.class);
     /** A version number for this class. */
     private static final long serialVersionUID = 1L;
     /** Parent container. */
             try {
                 Desktop.getDesktop().open(file);
             } catch (IllegalArgumentException ex) {
-                errorBus.publishAsync(new UserErrorEvent(ErrorLevel.LOW, ex,
-                        "Unable to open file: " + file, ""));
+                LOG.info(USER_ERROR, "Unable to open file {}", file.getAbsolutePath(), ex);
                 openButton.setEnabled(false);
             } catch (IOException ex) {
                 try {
                     Desktop.getDesktop().open(file.getParentFile());
                 } catch (IllegalArgumentException ex1) {
-                    errorBus.publishAsync(new UserErrorEvent(ErrorLevel.LOW, ex1, "Unable to open folder: "
-                            + file.getParentFile(), ""));
+                    LOG.info(USER_ERROR, "Unable to open folder: {}",
+                            file.getParentFile().getAbsolutePath(), ex1);
                     openButton.setEnabled(false);
                 } catch (IOException ex1) {
-                    errorBus.publishAsync(new UserErrorEvent(ErrorLevel.LOW, ex1,
-                            "No associated handler to open file or directory.", ""));
+                    LOG.info(USER_ERROR, "No associated handler to open file or directory.", ex1);
                     openButton.setEnabled(false);
                 }
             }