Add onDispose param

Destroy webview by default on dispose

web/src/main/java/com/google/accompanist/web/WebView.kt

@@ -25,6 +25,7 @@ import android.webkit.WebView
 import android.webkit.WebViewClient
 import androidx.activity.compose.BackHandler
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.Immutable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.Stable
@@ -33,10 +34,13 @@ import androidx.compose.runtime.mutableStateListOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.rememberUpdatedState
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalInspectionMode
 import androidx.compose.ui.viewinterop.AndroidView
+import com.google.accompanist.web.LoadingState.Finished
+import com.google.accompanist.web.LoadingState.Loading
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.MutableSharedFlow
@@ -68,6 +72,7 @@ fun WebView(
     captureBackPresses: Boolean = true,
     navigator: WebViewNavigator = rememberWebViewNavigator(),
     onCreated: (WebView) -> Unit = {},
+    onDispose: (WebView) -> Unit = { it.destroy() },
     client: AccompanistWebViewClient = remember { AccompanistWebViewClient() },
     chromeClient: AccompanistWebChromeClient = remember { AccompanistWebChromeClient() }
 ) {
@@ -81,6 +86,14 @@ fun WebView(
         with(navigator) { webView?.handleNavigationEvents() }
     }
 
+    val currentOnDispose by rememberUpdatedState(onDispose)
+
+    webView?.let { it ->
+        DisposableEffect(it) {
+            onDispose { currentOnDispose(it) }
+        }
+    }
+
     // Set the state of the client and chrome client
     // This is done internally to ensure they always are the same instance as the
     // parent Web composable