Make proxy config mutable

Now, the proxy config can be changed after webview creation. The webview will be recreated in this case.

Author: bommbomm34

webview-compose/src/commonMain/kotlin/io/github/kdroidfilter/webview/setting/PlatformWebSettings.kt

@@ -1,5 +1,8 @@
 package io.github.kdroidfilter.webview.setting
 
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.graphics.Color
 
 /**
@@ -13,9 +16,10 @@ sealed class PlatformWebSettings {
     ) : PlatformWebSettings()
 
     data class DesktopWebSettings(
-        var transparent: Boolean = true,
-        var proxyConfig: ProxyConfig? = null
-    ) : PlatformWebSettings()
+        var transparent: Boolean = true
+    ) : PlatformWebSettings() {
+        var proxyConfig: ProxyConfig? by mutableStateOf(null)
+    }
 
     data class IOSWebSettings(
         var opaque: Boolean = false,

webview-compose/src/jvmMain/kotlin/io/github/kdroidfilter/webview/web/WebViewDesktop.kt

@@ -46,7 +46,9 @@ actual fun ActualWebView(
     val currentOnDispose by rememberUpdatedState(onDispose)
     val scope = rememberCoroutineScope()
 
-    val proxyConfig = remember { state.webSettings.desktopWebSettings.proxyConfig }
+    val desiredProxyConfig = state.webSettings.desktopWebSettings.proxyConfig
+    var effectiveProxyConfig by remember { mutableStateOf(desiredProxyConfig) }
+
     val desiredUserAgent = state.webSettings.customUserAgentString?.trim()?.takeIf { it.isNotEmpty() }
     var effectiveUserAgent by remember { mutableStateOf(desiredUserAgent) }
 
@@ -57,8 +59,15 @@ actual fun ActualWebView(
         effectiveUserAgent = desiredUserAgent
     }
 
-    key(effectiveUserAgent) {
-        val nativeWebView = remember(state, factory) { factory(WebViewFactoryParam(state, userAgent = effectiveUserAgent, proxyConfig = proxyConfig)) }
+    LaunchedEffect(desiredProxyConfig) {
+        if (desiredProxyConfig == effectiveProxyConfig) return@LaunchedEffect
+        // Wry applies proxy config at creation time, so recreate the webview after a small debounce.
+        delay(400)
+        effectiveProxyConfig = desiredProxyConfig
+    }
+
+    key(effectiveUserAgent, effectiveProxyConfig) {
+        val nativeWebView = remember(state, factory) { factory(WebViewFactoryParam(state, userAgent = effectiveUserAgent, proxyConfig = effectiveProxyConfig)) }
 
         val desktopWebView =
             remember(nativeWebView, scope, webViewJsBridge) {