⭐️ Impl: ModalSheetBottomAttachedOverlayController

ios/ModalSheet/ModalSheetBottomAttachedOverlayController.swift

@@ -0,0 +1,81 @@
+//
+//  RNIModalSheetDecorationController.swift
+//  react-native-ios-modal
+//
+//  Created by Dominic Go on 10/3/24.
+//
+
+import UIKit
+import DGSwiftUtilities
+
+
+public class ModalSheetBottomAttachedOverlayController: UIViewController {
+
+  public var contentController: UIViewController?;
+
+  public var layoutConfig:
+    ModalSheetBottomAttachedOverlayLayoutConfig = .default;
+
+  public override func viewDidLoad() {
+    super.viewDidLoad();
+    self.setupContent();
+  };
+
+  // MARK: - Setup
+  // -------------
+
+  public func setupContent(){
+    guard let contentController = self.contentController else {
+      return;
+    };
+
+    self.view.addSubview(contentController.view);
+    contentController.view.translatesAutoresizingMaskIntoConstraints = false;
+
+    var constraints: [NSLayoutConstraint] = [
+      self.view.leadingAnchor.constraint(
+        equalTo: contentController.view.leadingAnchor
+      ),
+      self.view.trailingAnchor.constraint(
+        equalTo: contentController.view.trailingAnchor
+      ),
+      self.view.topAnchor.constraint(
+        equalTo: contentController.view.topAnchor
+      ),
+    ];
+
+    constraints += self.layoutConfig.createInternalBottomConstraint(
+      forView: contentController.view,
+      attachingTo: self.view
+    );
+
+    NSLayoutConstraint.activate(constraints);
+
+    self.addChild(contentController);
+    contentController.didMove(toParent: self);
+  };
+
+  // MARK: - Methods
+  // ---------------
+
+  public func attachView(
+    anchoredToBottomEdgesOf bottomEdgeAnchorView: UIView,
+    withSheetContainerView sheetContainerView: UIView
+  ){
+    self.view.translatesAutoresizingMaskIntoConstraints = false;
+    bottomEdgeAnchorView.addSubview(self.view);
+
+    var constraints: [NSLayoutConstraint] = [];
+    constraints += self.layoutConfig.createExternalHorizontalConstraints(
+      forView: self.view,
+      attachingTo: sheetContainerView
+    );
+
+    constraints += self.layoutConfig.createExternalBottomConstraints(
+      forView: self.view,
+      attachingTo: bottomEdgeAnchorView
+    );
+
+    NSLayoutConstraint.activate(constraints);
+  };
+};