Minor code cleanup in uikit/SDL_uikitview.m (no functional changes)

src/video/uikit/SDL_uikitview.m

@@ -311,92 +311,62 @@
 /* iPhone keyboard addition functions */
 #if SDL_IPHONE_KEYBOARD
 
-int SDL_iPhoneKeyboardShow(SDL_Window * window)
+SDL_uikitview * getWindowView(SDL_Window * window)
 {
-    SDL_WindowData *data;
-    SDL_uikitview *view;
-
-    if (NULL == window) {
+    if (window == NULL) {
         SDL_SetError("Window does not exist");
-        return -1;
+        return nil;
     }
 
-    data = (SDL_WindowData *)window->driverdata;
-    view = data->view;
+    SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
+    SDL_uikitview *view = data != NULL ? data->view : nil;
 
-    if (nil == view) {
+    if (view == nil) {
         SDL_SetError("Window has no view");
+    }
+
+    return view;
+}
+
+int SDL_iPhoneKeyboardShow(SDL_Window * window)
+{
+    SDL_uikitview *view = getWindowView(window);
+    if (view == nil) {
         return -1;
     }
-    else {
+
     [view showKeyboard];
     return 0;
-    }
 }
 
 int SDL_iPhoneKeyboardHide(SDL_Window * window)
 {
-    SDL_WindowData *data;
-    SDL_uikitview *view;
-
-    if (NULL == window) {
-        SDL_SetError("Window does not exist");
+    SDL_uikitview *view = getWindowView(window);
+    if (view == nil) {
         return -1;
     }
 
-    data = (SDL_WindowData *)window->driverdata;
-    view = data->view;
-
-    if (NULL == view) {
-        SDL_SetError("Window has no view");
-        return -1;
-    }
-    else {
     [view hideKeyboard];
     return 0;
-    }
 }
 
 SDL_bool SDL_iPhoneKeyboardIsShown(SDL_Window * window)
 {
-    SDL_WindowData *data;
-    SDL_uikitview *view;
-
-    if (NULL == window) {
-        SDL_SetError("Window does not exist");
-        return -1;
-    }
-
-    data = (SDL_WindowData *)window->driverdata;
-    view = data->view;
-
-    if (NULL == view) {
-        SDL_SetError("Window has no view");
+    SDL_uikitview *view = getWindowView(window);
+    if (view == nil) {
         return 0;
     }
-    else {
+
     return view.keyboardVisible;
-    }
 }
 
 int SDL_iPhoneKeyboardToggle(SDL_Window * window)
 {
-    SDL_WindowData *data;
-    SDL_uikitview *view;
-
-    if (NULL == window) {
-        SDL_SetError("Window does not exist");
+    SDL_uikitview *view = getWindowView(window);
+    if (view == nil) {
         return -1;
     }
 
-    data = (SDL_WindowData *)window->driverdata;
-    view = data->view;
-
-    if (NULL == view) {
-        SDL_SetError("Window has no view");
-        return -1;
-    }
-    else {
     if (SDL_iPhoneKeyboardIsShown(window)) {
         SDL_iPhoneKeyboardHide(window);
     }
@@ -404,7 +374,6 @@ int SDL_iPhoneKeyboardToggle(SDL_Window * window)
         SDL_iPhoneKeyboardShow(window);
     }
     return 0;
-    }
 }
 
 #else