macosx: Use displayLibraryPlaceholderViewWithImage in placeholder presentation...

macosx: Use displayLibraryPlaceholderViewWithImage in placeholder presentation of groups view controller

Signed-off-by: Claudio Cambra <developer@claudiocambra.com>

modules/gui/macosx/library/groups-library/VLCLibraryGroupsViewController.m

@@ -230,24 +230,9 @@
 
 - (void)presentPlaceholderGroupsView
 {
-    NSArray<NSLayoutConstraint *> * const oldViewPlaceholderConstraints =
-        self.libraryWindow.librarySegmentViewController.placeholderImageViewSizeConstraints;
-    for (NSLayoutConstraint * const constraint in oldViewPlaceholderConstraints) {
-        constraint.active = NO;
-    }
-    for (NSLayoutConstraint *constraint in self.placeholderImageViewSizeConstraints) {
-        constraint.active = YES;
-    }
-
-    self.emptyLibraryView.translatesAutoresizingMaskIntoConstraints = NO;
-    self.libraryTargetView.subviews = @[self.emptyLibraryView];
-    NSView * const emptyLibraryView = self.emptyLibraryView;
-    NSDictionary * const dict = NSDictionaryOfVariableBindings(emptyLibraryView);
-    [self.libraryTargetView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[emptyLibraryView(>=572.)]|" options:0 metrics:0 views:dict]];
-    [self.libraryTargetView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|[emptyLibraryView(>=444.)]|" options:0 metrics:0 views:dict]];
-
-    self.placeholderImageView.image = [NSImage imageNamed:@"placeholder-video"];
-    self.placeholderLabel.stringValue = _NS("Your favorite groups will appear here.");
+    [self.libraryWindow displayLibraryPlaceholderViewWithImage:[NSImage imageNamed:@"placeholder-video"]
+                                              usingConstraints:self.placeholderImageViewSizeConstraints
+                                             displayingMessage:_NS("Your favorite groups will appear here.")];
 }
 
 - (void)presentGroupsView