XKB: Split filter execution into a separate function

Move the giant state machine which maps from a key action to actually
running the filters into a separate function, to be used when adding
KeyFocusIn.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Tested-by: Giulio Camuffo <giuliocamuffo@gmail.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

xkb/xkbActions.c

@@ -1199,6 +1199,80 @@ XkbPushLockedStateToSlaves(DeviceIntPtr master, int evtype, int key)
     }
 }
 
+static void
+XkbActionGetFilter(DeviceIntPtr dev, DeviceEvent *event, KeyCode key,
+                   XkbAction *act, int *sendEvent)
+{
+    XkbSrvInfoPtr xkbi = dev->key->xkbInfo;
+    XkbFilterPtr filter;
+
+    switch (act->type) {
+    case XkbSA_SetMods:
+    case XkbSA_SetGroup:
+        filter = _XkbNextFreeFilter(xkbi);
+        *sendEvent = _XkbFilterSetState(xkbi, filter, key, act);
+        break;
+    case XkbSA_LatchMods:
+    case XkbSA_LatchGroup:
+        filter = _XkbNextFreeFilter(xkbi);
+        *sendEvent = _XkbFilterLatchState(xkbi, filter, key, act);
+        break;
+    case XkbSA_LockMods:
+    case XkbSA_LockGroup:
+        filter = _XkbNextFreeFilter(xkbi);
+        *sendEvent = _XkbFilterLockState(xkbi, filter, key, act);
+        break;
+    case XkbSA_ISOLock:
+        filter = _XkbNextFreeFilter(xkbi);
+        *sendEvent = _XkbFilterISOLock(xkbi, filter, key, act);
+        break;
+    case XkbSA_MovePtr:
+        filter = _XkbNextFreeFilter(xkbi);
+        *sendEvent = _XkbFilterPointerMove(xkbi, filter, key, act);
+        break;
+    case XkbSA_PtrBtn:
+    case XkbSA_LockPtrBtn:
+    case XkbSA_SetPtrDflt:
+        filter = _XkbNextFreeFilter(xkbi);
+        *sendEvent = _XkbFilterPointerBtn(xkbi, filter, key, act);
+        break;
+    case XkbSA_Terminate:
+        *sendEvent = XkbDDXTerminateServer(dev, key, act);
+        break;
+    case XkbSA_SwitchScreen:
+        filter = _XkbNextFreeFilter(xkbi);
+        *sendEvent = _XkbFilterSwitchScreen(xkbi, filter, key, act);
+        break;
+    case XkbSA_SetControls:
+    case XkbSA_LockControls:
+        filter = _XkbNextFreeFilter(xkbi);
+        *sendEvent = _XkbFilterControls(xkbi, filter, key, act);
+        break;
+    case XkbSA_ActionMessage:
+        filter = _XkbNextFreeFilter(xkbi);
+        *sendEvent = _XkbFilterActionMessage(xkbi, filter, key, act);
+        break;
+    case XkbSA_RedirectKey:
+        filter = _XkbNextFreeFilter(xkbi);
+        /* redirect actions must create a new DeviceEvent.  The
+         * source device id for this event cannot be obtained from
+         * xkbi, so we pass it here explicitly. The field deviceid
+         * equals to xkbi->device->id. */
+        filter->priv = event->sourceid;
+        *sendEvent = _XkbFilterRedirectKey(xkbi, filter, key, act);
+        break;
+    case XkbSA_DeviceBtn:
+    case XkbSA_LockDeviceBtn:
+        filter = _XkbNextFreeFilter(xkbi);
+        *sendEvent = _XkbFilterDeviceBtn(xkbi, filter, key, act);
+        break;
+    case XkbSA_XFree86Private:
+        filter = _XkbNextFreeFilter(xkbi);
+        *sendEvent = _XkbFilterXF86Private(xkbi, filter, key, act);
+        break;
+    }
+}
+
 void
 XkbHandleActions(DeviceIntPtr dev, DeviceIntPtr kbd, DeviceEvent *event)
 {
@@ -1208,7 +1282,6 @@ XkbHandleActions(DeviceIntPtr dev, DeviceIntPtr kbd, DeviceEvent *event)
     int sendEvent;
     Bool genStateNotify;
     XkbAction act;
-    XkbFilterPtr filter;
     Bool keyEvent;
     Bool pressEvent;
     ProcessInputProc backupproc;
@@ -1236,74 +1309,9 @@ XkbHandleActions(DeviceIntPtr dev, DeviceIntPtr kbd, DeviceEvent *event)
             act = XkbGetButtonAction(kbd, dev, key);
             key |= BTN_ACT_FLAG;
         }
+
         sendEvent = _XkbApplyFilters(xkbi, key, &act);
-        if (sendEvent) {
+        XkbActionGetFilter(dev, event, key, &act, &sendEvent);
-            switch (act.type) {
-            case XkbSA_SetMods:
-            case XkbSA_SetGroup:
-                filter = _XkbNextFreeFilter(xkbi);
-                sendEvent = _XkbFilterSetState(xkbi, filter, key, &act);
-                break;
-            case XkbSA_LatchMods:
-            case XkbSA_LatchGroup:
-                filter = _XkbNextFreeFilter(xkbi);
-                sendEvent = _XkbFilterLatchState(xkbi, filter, key, &act);
-                break;
-            case XkbSA_LockMods:
-            case XkbSA_LockGroup:
-                filter = _XkbNextFreeFilter(xkbi);
-                sendEvent = _XkbFilterLockState(xkbi, filter, key, &act);
-                break;
-            case XkbSA_ISOLock:
-                filter = _XkbNextFreeFilter(xkbi);
-                sendEvent = _XkbFilterISOLock(xkbi, filter, key, &act);
-                break;
-            case XkbSA_MovePtr:
-                filter = _XkbNextFreeFilter(xkbi);
-                sendEvent = _XkbFilterPointerMove(xkbi, filter, key, &act);
-                break;
-            case XkbSA_PtrBtn:
-            case XkbSA_LockPtrBtn:
-            case XkbSA_SetPtrDflt:
-                filter = _XkbNextFreeFilter(xkbi);
-                sendEvent = _XkbFilterPointerBtn(xkbi, filter, key, &act);
-                break;
-            case XkbSA_Terminate:
-                sendEvent = XkbDDXTerminateServer(dev, key, &act);
-                break;
-            case XkbSA_SwitchScreen:
-                filter = _XkbNextFreeFilter(xkbi);
-                sendEvent = _XkbFilterSwitchScreen(xkbi, filter, key, &act);
-                break;
-            case XkbSA_SetControls:
-            case XkbSA_LockControls:
-                filter = _XkbNextFreeFilter(xkbi);
-                sendEvent = _XkbFilterControls(xkbi, filter, key, &act);
-                break;
-            case XkbSA_ActionMessage:
-                filter = _XkbNextFreeFilter(xkbi);
-                sendEvent = _XkbFilterActionMessage(xkbi, filter, key, &act);
-                break;
-            case XkbSA_RedirectKey:
-                filter = _XkbNextFreeFilter(xkbi);
-                /* redirect actions must create a new DeviceEvent.  The
-                 * source device id for this event cannot be obtained from
-                 * xkbi, so we pass it here explicitly. The field deviceid
-                 * equals to xkbi->device->id. */
-                filter->priv = event->sourceid;
-                sendEvent = _XkbFilterRedirectKey(xkbi, filter, key, &act);
-                break;
-            case XkbSA_DeviceBtn:
-            case XkbSA_LockDeviceBtn:
-                filter = _XkbNextFreeFilter(xkbi);
-                sendEvent = _XkbFilterDeviceBtn(xkbi, filter, key, &act);
-                break;
-            case XkbSA_XFree86Private:
-                filter = _XkbNextFreeFilter(xkbi);
-                sendEvent = _XkbFilterXF86Private(xkbi, filter, key, &act);
-                break;
-            }
-        }
     }
     else {
         if (!keyEvent)