Add correct parent plugin. Don't flash if we have focus.

Change-Id: Iba18836162dc282090e26f044271fcf47d463ff6
Reviewed-on: http://gerrit.dmdirc.com/1868
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Shane Mc Cormack <shane@dmdirc.com>

src/com/dmdirc/addons/windowflashing/WindowFlashing.java

@@ -65,7 +65,9 @@ public class WindowFlashing extends Plugin {
      * Flashes an inactive window under windows.
      */
     public void flashWindow() {
-        user32.FlashWindowEx(flashInfo);
+        if (!mainFrame.isFocused()) {
+            user32.FlashWindowEx(flashInfo);
+        }
     }
 
     /**

src/com/dmdirc/addons/windowflashing/plugin.config

@@ -6,8 +6,8 @@
 keysections:
   metadata
   updates
-  version
   requires
+  version
 
 metadata:
   author=Greg <greg@dmdirc.com>
@@ -23,8 +23,12 @@ updates:
   id=64
 
 requires:
+  parent=ui_swing
   os=.*windows.*
 
+required-services:
+  swing ui
+
 provides:
   windowflash command