Modernize button inset handling and suppress deprecation warnings

Classes/ios/FUIButton.m

@@ -20,20 +20,68 @@ @implementation FUIButton
 - (id)initWithFrame:(CGRect)frame {
     self = [super initWithFrame:frame];
     if (self) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
         self.defaultEdgeInsets = self.titleEdgeInsets;
+#pragma clang diagnostic pop
+
+        if (@available(iOS 15.0, *)) {
+            if (self.configuration) {
+                self.defaultEdgeInsets = UIEdgeInsetsMake(self.configuration.contentInsets.top,
+                                                          self.configuration.contentInsets.leading,
+                                                          self.configuration.contentInsets.bottom,
+                                                          self.configuration.contentInsets.trailing);
+            }
+        }
     }
     return self;
 }
 
 - (void) setTitleEdgeInsets:(UIEdgeInsets)titleEdgeInsets {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
     [super setTitleEdgeInsets:titleEdgeInsets];
+#pragma clang diagnostic pop
+
     self.defaultEdgeInsets = titleEdgeInsets;
+
+    if (@available(iOS 15.0, *)) {
+        if (self.configuration) {
+            UIButtonConfiguration *config = self.configuration;
+            config.contentInsets = NSDirectionalEdgeInsetsMake(titleEdgeInsets.top,
+                                                               titleEdgeInsets.left,
+                                                               titleEdgeInsets.bottom,
+                                                               titleEdgeInsets.right);
+            self.configuration = config;
+        }
+    }
+
     [self setShadowHeight:self.shadowHeight];
 }
 
 - (void) setHighlighted:(BOOL)highlighted {
     UIEdgeInsets insets = highlighted ? self.highlightedEdgeInsets : self.normalEdgeInsets;
-    [super setTitleEdgeInsets:insets];
+
+    if (@available(iOS 15.0, *)) {
+        if (self.configuration) {
+            UIButtonConfiguration *config = self.configuration;
+            config.contentInsets = NSDirectionalEdgeInsetsMake(insets.top,
+                                                               insets.left,
+                                                               insets.bottom,
+                                                               insets.right);
+            self.configuration = config;
+        } else {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+            [super setTitleEdgeInsets:insets];
+#pragma clang diagnostic pop
+        }
+    } else {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+        [super setTitleEdgeInsets:insets];
+#pragma clang diagnostic pop
+    }
     [super setHighlighted:highlighted];
 }
 
@@ -74,7 +122,23 @@ - (void) setShadowHeight:(CGFloat)shadowHeight {
     self.highlightedEdgeInsets = insets;
     insets.top -= shadowHeight * 2.0f;
     self.normalEdgeInsets = insets;
+
+    if (@available(iOS 15.0, *)) {
+        if (self.configuration) {
+            UIButtonConfiguration *config = self.configuration;
+            config.contentInsets = NSDirectionalEdgeInsetsMake(insets.top,
+                                                               insets.left,
+                                                               insets.bottom,
+                                                               insets.right);
+            self.configuration = config;
+        }
+    }
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
     [super setTitleEdgeInsets:insets];
+#pragma clang diagnostic pop
+
     [self configureFlatButton];
 }