Move AbstractClient::isInternal() to Toplevel

src/abstract_client.cpp

@@ -2966,11 +2966,6 @@ Group *AbstractClient::group()
     return nullptr;
 }
 
-bool AbstractClient::isInternal() const
-{
-    return false;
-}
-
 bool AbstractClient::supportsWindowRules() const
 {
     return false;

src/abstract_client.h

@@ -878,16 +878,6 @@ public:
      */
     virtual Group *group();
 
-    /**
-     * Returns whether this is an internal client.
-     *
-     * Internal clients are created by KWin and used for special purpose windows,
-     * like the task switcher, etc.
-     *
-     * Default implementation returns @c false.
-     */
-    virtual bool isInternal() const;
-
     /**
      * Returns whether window rules can be applied to this client.
      *

src/toplevel.h

@@ -390,6 +390,7 @@ public:
     virtual bool isLockScreen() const;
     virtual bool isInputMethod() const;
     virtual bool isOutline() const;
+    virtual bool isInternal() const;
 
     /**
      * Returns the virtual desktop within the workspace() the client window
@@ -879,6 +880,11 @@ inline bool Toplevel::isOutline() const
     return false;
 }
 
+inline bool Toplevel::isInternal() const
+{
+    return false;
+}
+
 inline bool Toplevel::shape() const
 {
     return is_shape;