Switch to using WindowManager

Change-Id: I3e7b1b2f5d73079978be876fe51d45c9005ef22b
Reviewed-on: http://gerrit.dmdirc.com/374
Reviewed-by: Gregory Holmes <greboid@dmdirc.com>
Tested-by: Gregory Holmes <greboid@dmdirc.com>

src/com/dmdirc/addons/lagdisplay/LagDisplayPlugin.java

 import com.dmdirc.interfaces.ActionListener;
 import com.dmdirc.interfaces.ConfigChangeListener;
 import com.dmdirc.plugins.Plugin;
+import com.dmdirc.ui.WindowManager;
 import com.dmdirc.ui.interfaces.Window;
 import com.dmdirc.util.RollingList;
 
         }
 
         if (!useAlternate && type.equals(CoreActionType.SERVER_GOTPING)) {
-            final Window active = Main.getUI().getActiveWindow();
+            final Window active = WindowManager.getActiveWindow();
             final String value = formatTime(arguments[1]);
 
             getHistory(((Server) arguments[0])).add((Long) arguments[1]);
 
             panel.refreshDialog();
         } else if (!useAlternate && type.equals(CoreActionType.SERVER_NOPING)) {
-            final Window active = Main.getUI().getActiveWindow();
+            final Window active = WindowManager.getActiveWindow();
             final String value = formatTime(arguments[1]) + "+";
 
             pings.put(((Server) arguments[0]), value);
 
             panel.refreshDialog();
         } else if (type.equals(CoreActionType.SERVER_DISCONNECTED)) {
-            final Window active = Main.getUI().getActiveWindow();
+            final Window active = WindowManager.getActiveWindow();
 
             if (((Server) arguments[0]).ownsFrame(active)) {
                 panel.setText("Not connected");
                 final long sent = Long.parseLong(((String[]) arguments[2])[3].substring(9));
                 final Long duration = Long.valueOf(new Date().getTime() - sent);
                 final String value = formatTime(duration);
-                final Window active = Main.getUI().getActiveWindow();
+                final Window active = WindowManager.getActiveWindow();
 
                 pings.put((Server) arguments[0], value);
                 getHistory(((Server) arguments[0])).add(duration);

src/com/dmdirc/addons/lagdisplay/PingHistoryPanel.java

 
 import com.dmdirc.Main;
 import com.dmdirc.ServerManager;
+import com.dmdirc.ui.WindowManager;
 import com.dmdirc.util.RollingList;
 import java.awt.Color;
 import java.awt.Dimension;
         
         this.plugin = plugin;
         this.history = plugin.getHistory(ServerManager.getServerManager()
-                .getServerFromFrame(Main.getUI().getActiveWindow()));
+                .getServerFromFrame(WindowManager.getActiveWindow()));
 
         for (Long value : history.getList()) {
             maximum = Math.max(value, maximum);

src/com/dmdirc/addons/windowstatus/WindowStatusPlugin.java

 import com.dmdirc.parser.interfaces.ChannelInfo;
 import com.dmdirc.parser.interfaces.ClientInfo;
 import com.dmdirc.plugins.Plugin;
+import com.dmdirc.ui.WindowManager;
 import com.dmdirc.ui.interfaces.InputWindow;
 import com.dmdirc.ui.interfaces.Window;
 
      * Update the window status using the current active window.
      */
     public void updateStatus() {
-        final Window active = Main.getUI().getActiveWindow();
+        final Window active = WindowManager.getActiveWindow();
 
         if (active != null) {
             updateStatus(((InputWindow) active).getContainer());