Add browser service launchWebAuthentication API

[jperedadnr]

Fixes #450

[Copilot]

Pull request overview

Adds a new BrowserService.launchWebAuthentication(...) API to support secure web-based authentication flows, addressing iOS limitations with HTTPS redirect handling by using ASWebAuthenticationSession.

Changes:

• Introduces launchWebAuthentication(String url, String callbackUrlScheme, Consumer<String> callback) to the BrowserService API with cross-platform implementations.
• Implements iOS web authentication via ASWebAuthenticationSession (including iOS 17.4+ HTTPS callback support) and JNI callback plumbing back into Java.
• Adds iOS Substrate/Graal JNI config entries and links the AuthenticationServices framework for native builds.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
modules/browser/src/main/resources/META-INF/substrate/config/jniconfig-x86_64-ios.json	Enables Substrate/Graal JNI access for iOS auth result callback method.
modules/browser/src/main/resources/META-INF/substrate/config/jniconfig-arm64-ios.json	Same as above for arm64 iOS builds.
modules/browser/src/main/native/ios/Browser.m	Adds ASWebAuthenticationSession-based auth flow and JNI callback into Java.
modules/browser/src/main/java/module-info.java	Declares JavaFX dependency needed for Java-side callback dispatch (Platform.runLater).
modules/browser/src/main/java/com/gluonhq/attach/browser/impl/IOSBrowserService.java	Adds Java-facing API, stores callback, and receives native results.
modules/browser/src/main/java/com/gluonhq/attach/browser/impl/DesktopBrowserService.java	Adds API method (currently delegates to external browser).
modules/browser/src/main/java/com/gluonhq/attach/browser/impl/AndroidBrowserService.java	Adds API method (currently delegates to external browser).
modules/browser/src/main/java/com/gluonhq/attach/browser/BrowserService.java	Defines new public API + documentation.
gradle/native-build.gradle	Links AuthenticationServices framework for iOS builds.

Comments suppressed due to low confidence (1)

modules/browser/src/main/native/ios/Browser.m:62

• JNI_OnLoad_Browser currently caches a JNIEnv* globally, but JNIEnv* is only valid on the thread it was obtained on. Save the JavaVM* and use GetEnv only for the version check.

JNIEXPORT jint JNICALL
JNI_OnLoad_Browser(JavaVM *vm, void *reserved)
{
#ifdef JNI_VERSION_1_8
    //min. returned JNI_VERSION required by JDK8 for builtin libraries
    if ((*vm)->GetEnv(vm, (void **)&env, JNI_VERSION_1_8) != JNI_OK) {
        return JNI_VERSION_1_4;

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.