Fix compiling for iOS

.github/workflows/ci.yml

@@ -58,9 +58,15 @@ jobs:
       with:
         command: build
         args: --features webview --example webview_custom_protocol
-    # fails because it needs uikit, which is not
-    # building for me
-    #- uses: actions-rs/cargo@v1
-    #  with:
-    #    command: build
-    #    args: --example ios-beta
+    # Since it's all Objective-C message passing under the hood, we're
+    # really just looking for whether we've broken the iOS build. It is likely
+    # that more robust tests/checking infrastructure should exist for this side
+    # of things as the iOS portion gets iterated on.
+    #
+    # (e.g, this at the moment will not catch invalid selector calls, like if an appkit-specific
+    # selector is used for something on iOS)
+    - uses: actions-rs/cargo@v1
+      with:
+        command: build
+        target: x86_64-apple-ios
+        args: --example ios-beta --no-default-features --features uikit,autolayout

examples/ios-beta/readme.md

@@ -7,7 +7,7 @@ Since this needs to run in an iOS simulator or on a device, you can't run it lik
 - Start a simulator (Simulator.app).
 - `cargo install cargo-bundle`
 - `cargo bundle --example ios-beta --no-default-features --features uikit,autolayout --target x86_64-apple-ios`
-- `xcrun simctl install booted target/x86_64-apple-ios/debug/examples/bundle/ios/cacao-ios-beta.app`
+- `xcrun simctl install booted target/x86_64-apple-ios/debug/examples/bundle/ios/ios-beta.app`
 - `xcrun simctl launch --console booted com.cacao.ios-test`
 
 ## Current Support

src/layout/constraint.rs

@@ -10,6 +10,7 @@ use objc_id::ShareId;
 
 use crate::foundation::{id, NO, YES};
 
+#[cfg(all(feature = "appkit", target_os = "macos"))]
 use super::LayoutConstraintAnimatorProxy;
 
 /// A wrapper for `NSLayoutConstraint`. This both acts as a central path through which to activate
@@ -31,14 +32,18 @@ pub struct LayoutConstraint {
     pub priority: f64,
 
     /// An animator proxy that can be used inside animation contexts.
+    /// This is currently only supported on macOS with the `appkit` feature.
+    #[cfg(all(feature = "appkit", target_os = "macos"))]
     pub animator: LayoutConstraintAnimatorProxy
 }
 
 impl LayoutConstraint {
     /// An internal method for wrapping existing constraints.
     pub(crate) fn new(object: id) -> Self {
         LayoutConstraint {
+            #[cfg(all(feature = "appkit", target_os = "macos"))]
             animator: LayoutConstraintAnimatorProxy::new(object),
+
             constraint: unsafe { ShareId::from_ptr(object) },
             offset: 0.0,
             multiplier: 0.0,
@@ -55,7 +60,9 @@ impl LayoutConstraint {
         }
 
         LayoutConstraint {
+            #[cfg(all(feature = "appkit", target_os = "macos"))]
             animator: self.animator,
+
             constraint: self.constraint,
             offset: offset,
             multiplier: self.multiplier,

src/layout/mod.rs

@@ -6,7 +6,10 @@
 mod traits;
 pub use traits::Layout;
 
+#[cfg(all(feature = "appkit", target_os = "macos"))]
 mod animator;
+
+#[cfg(all(feature = "appkit", target_os = "macos"))]
 pub use animator::LayoutConstraintAnimatorProxy;
 
 #[cfg(feature = "autolayout")]

src/view/mod.rs

@@ -58,7 +58,10 @@ use crate::layout::{LayoutAnchorDimension, LayoutAnchorX, LayoutAnchorY, SafeAre
 #[cfg(feature = "appkit")]
 use crate::pasteboard::PasteboardType;
 
+#[cfg(all(feature = "appkit", target_os = "macos"))]
 mod animator;
+
+#[cfg(all(feature = "appkit", target_os = "macos"))]
 pub use animator::ViewAnimatorProxy;
 
 #[cfg_attr(feature = "appkit", path = "appkit.rs")]
@@ -94,6 +97,9 @@ pub struct View<T = ()> {
     pub objc: ObjcProperty,
 
     /// An object that supports limited animations. Can be cloned into animation closures.
+    ///
+    /// This is currently only supported on macOS with the `appkit` feature.
+    #[cfg(all(feature = "appkit", target_os = "macos"))]
     pub animator: ViewAnimatorProxy,
 
     /// References the underlying layer. This is consistent across AppKit & UIKit - in AppKit
@@ -209,6 +215,7 @@ impl View {
 
             layer: Layer::wrap(unsafe { msg_send![view, layer] }),
 
+            #[cfg(all(feature = "appkit", target_os = "macos"))]
             animator: ViewAnimatorProxy::new(view),
             objc: ObjcProperty::retain(view)
         }
@@ -256,6 +263,8 @@ impl<T> View<T> {
             is_handle: true,
             layer: self.layer.clone(),
             objc: self.objc.clone(),
+
+            #[cfg(all(feature = "appkit", target_os = "macos"))]
             animator: self.animator.clone(),
 
             #[cfg(feature = "autolayout")]