refactor(macos): move custom class to individual files

Cargo.toml

@@ -144,7 +144,6 @@ objc2-app-kit = { version = "0.2.0", features = [
   "NSResponder",
   "NSOpenPanel",
   "NSSavePanel",
-  "NSWindow",
   "NSMenu",
 ] }
 objc2-ui-kit = { version = "0.2.2", features = [

src/lib.rs

@@ -239,7 +239,7 @@ pub(crate) mod wkwebview;
 #[cfg(any(target_os = "macos", target_os = "ios"))]
 use wkwebview::*;
 #[cfg(any(target_os = "macos", target_os = "ios"))]
-pub use wkwebview::{PrintMargin, PrintOptions};
+pub use wkwebview::{PrintMargin, PrintOptions, WryWebView};
 
 #[cfg(target_os = "windows")]
 pub(crate) mod webview2;
@@ -1631,10 +1631,6 @@ impl WebViewExtMacOS for WebView {
   }
 
   fn ns_window(&self) -> Retained<NSWindow> {
-    // unsafe {
-    //   let ns_window: cocoa::base::id = msg_send![self.webview.webview, window];
-    //   ns_window
-    // }
     self.webview.webview.window().unwrap().clone()
   }
 

src/wkwebview/class/document_title_changed_observer.rs

@@ -0,0 +1,98 @@
+// Copyright 2020-2024 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
+use std::{ffi::c_void, ptr::null_mut};
+
+use objc2::{
+  declare_class, msg_send, msg_send_id,
+  mutability::InteriorMutable,
+  rc::Retained,
+  runtime::{AnyObject, NSObject},
+  ClassType, DeclaredClass,
+};
+use objc2_foundation::{
+  NSDictionary, NSKeyValueChangeKey, NSKeyValueObservingOptions,
+  NSObjectNSKeyValueObserverRegistration, NSObjectProtocol, NSString,
+};
+
+use crate::WryWebView;
+pub struct DocumentTitleChangedObserverIvars {
+  pub object: Retained<WryWebView>,
+  pub handler: Box<dyn Fn(String)>,
+}
+
+declare_class!(
+  pub struct DocumentTitleChangedObserver;
+
+  unsafe impl ClassType for DocumentTitleChangedObserver {
+    type Super = NSObject;
+    type Mutability = InteriorMutable;
+    const NAME: &'static str = "DocumentTitleChangedObserver";
+  }
+
+  impl DeclaredClass for DocumentTitleChangedObserver {
+    type Ivars = DocumentTitleChangedObserverIvars;
+  }
+
+  unsafe impl DocumentTitleChangedObserver {
+    #[method(observeValueForKeyPath:ofObject:change:context:)]
+    fn observe_value_for_key_path(
+      &self,
+      key_path: Option<&NSString>,
+      of_object: Option<&AnyObject>,
+      _change: Option<&NSDictionary<NSKeyValueChangeKey, AnyObject>>,
+      _context: *mut c_void,
+    ) {
+      if let (Some(key_path), Some(object)) = (key_path, of_object) {
+        if key_path.to_string() == "title" {
+          unsafe {
+            let handler = &self.ivars().handler;
+            // if !handler.is_null() {
+              let title: *const NSString = msg_send![object, title];
+              handler((*title).to_string());
+            // }
+          }
+        }
+      }
+    }
+  }
+
+  unsafe impl NSObjectProtocol for DocumentTitleChangedObserver {}
+);
+
+impl DocumentTitleChangedObserver {
+  pub fn new(webview: Retained<WryWebView>, handler: Box<dyn Fn(String)>) -> Retained<Self> {
+    let observer = Self::alloc().set_ivars(DocumentTitleChangedObserverIvars {
+      object: webview,
+      handler,
+    });
+
+    let observer: Retained<Self> = unsafe { msg_send_id![super(observer), init] };
+
+    unsafe {
+      observer
+        .ivars()
+        .object
+        .addObserver_forKeyPath_options_context(
+          &observer,
+          &NSString::from_str("title"),
+          NSKeyValueObservingOptions::NSKeyValueObservingOptionNew,
+          null_mut(),
+        );
+    }
+
+    observer
+  }
+}
+
+impl Drop for DocumentTitleChangedObserver {
+  fn drop(&mut self) {
+    unsafe {
+      self
+        .ivars()
+        .object
+        .removeObserver_forKeyPath(&self, &NSString::from_str("title"));
+    }
+  }
+}

src/wkwebview/class/mod.rs

@@ -0,0 +1,12 @@
+// Copyright 2020-2024 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
+pub mod wry_web_view;
+pub mod wry_web_view_delegate;
+pub mod document_title_changed_observer;
+pub mod wry_navigation_delegate;
+pub mod wry_download_delegate;
+pub mod wry_web_view_ui_delegate;
+pub mod wry_web_view_parent;
+pub mod url_scheme_handler;