feat: macOS/iOS: add option to disable or enable link previews when building a webview (#1534)

* macOS/iOS: add option to disable or enable link previews when building a webview (the webkit api has it enabled by default)
  - `WebViewBuilderExtDarwin.allow_link_preview(allow_link_preview: bool)`

* cleanup

---------

Co-authored-by: Lucas Nogueira <lucas@tauri.app>

Author: Simon-Laux

.changes/macOS_allow_link_preview.md

@@ -0,0 +1,6 @@
+---
+"wry": patch:feat
+---
+
+macOS/iOS: add option to disable link previews when building a webview (the webkit API has it enabled by default)
+  - `WebViewBuilderExtDarwin.with_allow_link_preview(bool)`

src/lib.rs

@@ -1394,10 +1394,23 @@ impl<'a> WebViewBuilder<'a> {
 }
 
 #[cfg(any(target_os = "macos", target_os = "ios"))]
-#[derive(Clone, Default)]
+#[derive(Clone)]
 pub(crate) struct PlatformSpecificWebViewAttributes {
   data_store_identifier: Option<[u8; 16]>,
   traffic_light_inset: Option<dpi::Position>,
+  allow_link_preview: bool,
+}
+
+#[cfg(any(target_os = "macos", target_os = "ios"))]
+impl Default for PlatformSpecificWebViewAttributes {
+  fn default() -> Self {
+    Self {
+      data_store_identifier: None,
+      traffic_light_inset: None,
+      // platform default for this is true
+      allow_link_preview: true,
+    }
+  }
 }
 
 #[cfg(any(target_os = "macos", target_os = "ios"))]
@@ -1415,6 +1428,12 @@ pub trait WebViewBuilderExtDarwin {
   /// Warning: Do not use this if your chosen window library does not support traffic light insets.
   /// Warning: Only use this in **decorated** windows with a **hidden titlebar**!
   fn with_traffic_light_inset<P: Into<dpi::Position>>(self, position: P) -> Self;
+  /// Whether to show a link preview when long pressing on links. Available on macOS and iOS only.
+  ///
+  /// Default is true.
+  ///
+  /// See https://developer.apple.com/documentation/webkit/wkwebview/allowslinkpreview
+  fn with_allow_link_preview(self, allow_link_preview: bool) -> Self;
 }
 
 #[cfg(any(target_os = "macos", target_os = "ios"))]
@@ -1432,6 +1451,13 @@ impl WebViewBuilderExtDarwin for WebViewBuilder<'_> {
       Ok(b)
     })
   }
+
+  fn with_allow_link_preview(self, allow_link_preview: bool) -> Self {
+    self.and_then(|mut b| {
+      b.platform_specific.allow_link_preview = allow_link_preview;
+      Ok(b)
+    })
+  }
 }
 
 #[cfg(windows)]

src/wkwebview/mod.rs

@@ -538,6 +538,9 @@ r#"Object.defineProperty(window, 'ipc', {
         w.navigate_to_string(&html);
       }
 
+      // Allow Link Preview
+      w.webview.setAllowsLinkPreview(pl_attrs.allow_link_preview);
+
       // Inject the web view into the window as main content
       #[cfg(target_os = "macos")]
       {