feat: get webview version (#259)

* feat(macOS): Implement basic `version()`

* feat(linux): basic implementation of `version()`

* Add changefile

* feat(win32): Implement basic `version()`

* Expose global `webview_version` function

* [ci skip] update changelog

* Add `webview_version` test

* Seems the compiler prefer `panic!()`

* Panic with trace

* Install webview2 on the CI

.changes/get-version.md

@@ -0,0 +1,5 @@
+---
+"wry": patch
+---
+
+Expose `webview_version` function in the `webview` module.

.github/workflows/build.yml

@@ -24,6 +24,13 @@ jobs:
           sudo apt-get update
           sudo apt-get install -y webkit2gtk-4.0 libgtksourceview-3.0-dev libappindicator3-dev
 
+      - name: install webview2 (windows only)
+        if: matrix.platform == 'windows-latest'
+        shell: pwsh
+        run: |
+          Invoke-WebRequest https://go.microsoft.com/fwlink/p/?LinkId=2124703 -OutFile installwebview.exe -UseBasicParsing
+          cmd /C start /wait installwebview.exe /silent /install
+
       - name: build
         run: cargo build
       - name: test

Cargo.toml

@@ -45,6 +45,7 @@ tao = { version = "0.2", default-features = false, features = [ "serde" ] }
 
 [target."cfg(target_os = \"linux\")".dependencies]
 webkit2gtk = { version = "0.11", features = [ "v2_10" ] }
+webkit2gtk-sys = "0.13.0"
 gio = "0.9"
 glib = "0.10"
 gtk = "0.9"

src/webview/linux/mod.rs

@@ -15,6 +15,9 @@ use webkit2gtk::{
   WebContextBuilder, WebContextExt, WebView, WebViewExt, WebViewExtManual,
   WebsiteDataManagerBuilder,
 };
+use webkit2gtk_sys::{
+  webkit_get_major_version, webkit_get_micro_version, webkit_get_minor_version,
+};
 
 use crate::{
   application::{platform::unix::*, window::Window},
@@ -234,3 +237,14 @@ impl InnerWebView {
     Ok(())
   }
 }
+
+pub fn platform_webview_version() -> Result<String> {
+  let (major, minor, patch) = unsafe {
+    (
+      webkit_get_major_version(),
+      webkit_get_minor_version(),
+      webkit_get_micro_version(),
+    )
+  };
+  Ok(format!("{}.{}.{}", major, minor, patch).into())
+}

src/webview/macos/mod.rs

@@ -358,6 +358,18 @@ impl InnerWebView {
   }
 }
 
+pub fn platform_webview_version() -> Result<String> {
+  unsafe {
+    let bundle: id =
+      msg_send![class!(NSBundle), bundleWithIdentifier: NSString::new("com.apple.WebKit")];
+    let dict: id = msg_send![bundle, infoDictionary];
+    let webkit_version: id = msg_send![dict, objectForKey: NSString::new("CFBundleVersion")];
+    let nsstring = NSString(Id::from_ptr(webkit_version));
+    let () = msg_send![bundle, unload];
+    Ok(nsstring.to_str().to_string())
+  }
+}
+
 impl Drop for InnerWebView {
   fn drop(&mut self) {
     // We need to drop handler closures here

src/webview/mod.rs

@@ -459,3 +459,20 @@ pub enum FileDropEvent {
   /// The file drop was aborted.
   Cancelled,
 }
+
+/// Get Webview/Webkit version on current platform.
+pub fn webview_version() -> Result<String> {
+  platform_webview_version()
+}
+
+#[cfg(test)]
+mod tests {
+  use super::*;
+
+  #[test]
+  fn should_get_webview_version() {
+    if let Err(error) = webview_version() {
+      panic!("{}", error);
+    }
+  }
+}

src/webview/win32/mod.rs

@@ -262,3 +262,11 @@ impl InnerWebView {
     Ok(())
   }
 }
+
+pub fn platform_webview_version() -> Result<String> {
+  let webview_builder = webview2::EnvironmentBuilder::new();
+  let version = webview_builder
+    .get_available_browser_version_string()
+    .expect("Unable to get webview2 version");
+  Ok(version)
+}

src/webview/winrt/mod.rs

@@ -299,3 +299,8 @@ where
 
   result
 }
+
+// not supported yet
+pub fn platform_webview_version() -> Result<String> {
+  Ok("Unknown".into())
+}