Address #673

.github/workflows/ci.yml

@@ -37,7 +37,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: "26.0"
+          - os: "26.0.1"
             xcode: "26.0.1"
             sim: "iPhone 16 Pro"
             parallel: NO  # Stop random test job failures

Examples/SamplesSwiftUI/SamplesSwiftUI/UseCases/MainView.swift

@@ -3,6 +3,7 @@
 import FloatingPanel
 import SwiftUI
 import UIKit
+import os.log
 
 struct MainView: View {
     @State private var panelLayout: FloatingPanelLayout? = MyFloatingPanelLayout()
@@ -20,6 +21,9 @@ struct MainView: View {
                 .floatingPanelSurfaceAppearance(.transparent())
                 .floatingPanelLayout(panelLayout)
                 .floatingPanelState($panelState)
+                .onChange(of: panelState) { newValue in
+                    Logger().debug("Panel state changed: \(newValue ?? .hidden)")
+                }
 
             VStack(spacing: 32) {
                 Button("Move to full") {

FloatingPanel.podspec

@@ -11,7 +11,7 @@ The new interface displays the related contents and utilities in parallel as a u
   s.author              = "Shin Yamamoto"
   s.social_media_url    = "https://x.com/scenee"
 
-  s.platform            = :ios, "13.0"
+  s.platform            = :ios, "12.0"
   s.source              = { :git => "https://github.com/scenee/FloatingPanel.git", :tag => s.version.to_s }
   s.source_files        = "Sources/**/*.swift"
   s.swift_version       = '5.0'
@@ -20,3 +20,4 @@ The new interface displays the related contents and utilities in parallel as a u
 
   s.license             = { :type => "MIT", :file => "LICENSE" }
 end
+

FloatingPanel.xcodeproj/project.pbxproj

@@ -523,7 +523,7 @@
 				ENABLE_USER_SCRIPT_SANDBOXING = YES;
 				INFOPLIST_FILE = Sources/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -556,7 +556,7 @@
 				ENABLE_USER_SCRIPT_SANDBOXING = YES;
 				INFOPLIST_FILE = Sources/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -694,7 +694,7 @@
 				ENABLE_USER_SCRIPT_SANDBOXING = YES;
 				INFOPLIST_FILE = Sources/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",

Package.swift

@@ -6,7 +6,7 @@ import PackageDescription
 let package = Package(
     name: "FloatingPanel",
     platforms: [
-        .iOS(.v13)
+        .iOS(.v12)
     ],
     products: [
         // Products define the executables and libraries produced by a package, and make them visible to other packages.
@@ -25,3 +25,4 @@ let package = Package(
     ],
     swiftLanguageVersions: [.version("5")]
 )
+

Sources/Core.swift

@@ -1,6 +1,8 @@
 // Copyright 2018-Present Shin Yamamoto. All rights reserved. MIT license.
 
+#if canImport(Combine)
 import Combine
+#endif
 import UIKit
 import os.log
 
@@ -50,7 +52,13 @@ class Core: NSObject, UIGestureRecognizerDelegate {
             }
         }
     }
-    private(set) var statePublisher: CurrentValueSubject<FloatingPanelState, Never> = .init(.hidden)
+
+    @available(iOS 13.0, *)
+    private(set) var statePublisher: CurrentValueSubject<FloatingPanelState, Never>? {
+        get { _statePublisher as? CurrentValueSubject<FloatingPanelState, Never> }
+        set { _statePublisher = newValue }
+    }
+    private var _statePublisher: Any?
 
     var panGestureRecognizer: FloatingPanelPanGestureRecognizer
     let panGestureDelegateRouter: FloatingPanelPanGestureRecognizer.DelegateRouter
@@ -100,6 +108,10 @@ class Core: NSObject, UIGestureRecognizerDelegate {
 
         super.init()
 
+        if #available(iOS 13.0, *) {
+            statePublisher = .init(.hidden)
+        }
+
         panGestureRecognizer.set(floatingPanel: self)
         surfaceView.addGestureRecognizer(panGestureRecognizer)
         panGestureRecognizer.addTarget(self, action: #selector(handle(panGesture:)))
@@ -262,7 +274,9 @@ class Core: NSObject, UIGestureRecognizerDelegate {
         layoutAdapter.activateLayout(for: target, forceLayout: true)
         backdropView.alpha = getBackdropAlpha(for: target)
         adjustScrollContentInsetIfNeeded()
-        statePublisher.send(target)
+        if #available(iOS 13.0, *) {
+            statePublisher?.send(target)
+        }
     }
 
     private func getBackdropAlpha(for target: FloatingPanelState) -> CGFloat {

Sources/SwiftUI/FloatingPanelView.swift

@@ -235,7 +235,7 @@ extension FloatingPanelCoordinatorProxy {
 
     /// Start observing ``FloatingPanelController/state`` through the `Core` object.
     func observeStateChanges() {
-        controller.floatingPanel.statePublisher
+        controller.floatingPanel.statePublisher?
             .sink { [weak self] state in
                 guard let self = self else { return }
                 // Needs to update the state binding value on the next run loop cycle to avoid this error.

Tests/CoreTests.swift

@@ -1,6 +1,9 @@
 // Copyright 2018 the FloatingPanel authors. All rights reserved. MIT license.
 
 import XCTest
+#if canImport(Combine)
+import Combine
+#endif
 @testable import FloatingPanel
 
 class CoreTests: XCTestCase {
@@ -1022,6 +1025,45 @@ class CoreTests: XCTestCase {
         XCTAssertEqual(fpc.surfaceLocation(for: .full).y, fpc.surfaceLocation.y)
         XCTAssertEqual(delegate.willAttract, false)
     }
+
+    @available(iOS 13.0, *)
+    func test_statePublisher() throws {
+        let fpc = FloatingPanelController()
+        fpc.showForTest()
+
+        XCTAssertEqual(fpc.state, .half)
+
+        // Verify statePublisher is available on iOS 13+
+        XCTAssertNotNil(fpc.floatingPanel.statePublisher)
+
+        var receivedStates: [FloatingPanelState] = []
+        var cancellables = Set<AnyCancellable>()
+
+        // Subscribe to statePublisher
+        fpc.floatingPanel.statePublisher?
+            .sink { state in
+                receivedStates.append(state)
+            }
+            .store(in: &cancellables)
+
+        // The initial state should be emitted first
+        XCTAssertEqual(receivedStates, [.half])
+
+        // Move to .full
+        fpc.move(to: .full, animated: false)
+        XCTAssertEqual(fpc.state, .full)
+        XCTAssertEqual(receivedStates, [.half, .full])
+
+        // Move to .tip
+        fpc.move(to: .tip, animated: false)
+        XCTAssertEqual(fpc.state, .tip)
+        XCTAssertEqual(receivedStates, [.half, .full, .tip])
+
+        // Move back to .half
+        fpc.move(to: .half, animated: false)
+        XCTAssertEqual(fpc.state, .half)
+        XCTAssertEqual(receivedStates, [.half, .full, .tip, .half])
+    }
 }
 
 private class FloatingPanelLayout3Positions: FloatingPanelTestLayout {