Enhance error handling and add support for retrieving page title and URL

Author: Sterta

webview-compose/src/wasmJsMain/kotlin/io/github/kdroidfilter/webview/web/JsInterop.kt

@@ -1,4 +1,5 @@
 @file:OptIn(ExperimentalWasmJsInterop::class)
+
 package io.github.kdroidfilter.webview.web
 
 import org.w3c.dom.Element
@@ -12,11 +13,7 @@ fun evaluateScriptJs(
 ): String = js(
     //language=javascript
     """{
-        try {
-            return element.contentWindow && element.contentWindow.eval ? String(element.contentWindow.eval(script)) : '';
-        } catch (err) {
-            return 'Error: ' + err.message;
-        }
+        return element.contentWindow && element.contentWindow.eval ? String(element.contentWindow.eval(script)) : '';
     }"""
 )
 

webview-compose/src/wasmJsMain/kotlin/io/github/kdroidfilter/webview/web/WasmJsWebView.kt

@@ -186,8 +186,8 @@ class WasmJsWebView(
             try {
                 val result = evaluateScriptJs(element, script)
                 callback?.invoke(result)
-            } catch (e: Exception) {
-                callback?.invoke("Error: ${e.message}")
+            } catch (t: Throwable) {
+                callback?.invoke("Error: ${t.message}")
             }
         }
     }

webview-compose/src/wasmJsMain/kotlin/io/github/kdroidfilter/webview/web/WasmJsWebViewNavigator.kt

@@ -41,8 +41,8 @@ class HtmlViewNavigator(
                     try {
                         val result = evaluateScriptJs(element, event.script)
                         event.callback?.invoke(result)
-                    } catch (e: Exception) {
-                        event.callback?.invoke("Error: ${e.message}")
+                    } catch (t: Throwable) {
+                        event.callback?.invoke("Error: ${t.message}")
                     }
                 }
                 is NavigationEvent.StopLoading -> element.contentWindow?.stop()

webview-compose/src/wasmJsMain/kotlin/io/github/kdroidfilter/webview/web/WebView.wasmJs.kt

@@ -2,12 +2,7 @@
 
 package io.github.kdroidfilter.webview.web
 
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.runtime.rememberCoroutineScope
-import androidx.compose.runtime.snapshotFlow
+import androidx.compose.runtime.*
 import androidx.compose.ui.Modifier
 import io.github.kdroidfilter.webview.jsbridge.JsMessage
 import io.github.kdroidfilter.webview.jsbridge.WebViewJsBridge
@@ -181,7 +176,30 @@ actual fun ActualWebView(
                         }
                     }
                 }
-                is HtmlLoadingState.Finished -> state.loadingState = LoadingState.Finished
+
+                is HtmlLoadingState.Finished -> {
+                    state.loadingState = LoadingState.Finished
+                    state.webView?.nativeWebView?.element?.let { element ->
+                        try {
+                            state.pageTitle = evaluateScriptJs(
+                                element,
+                                "document.title"
+                            )
+                            state.lastLoadedUrl = evaluateScriptJs(
+                                element,
+                                "document.location"
+                            )
+                        } catch (t: Throwable) {
+                            KLogger.e(
+                                t = t,
+                                tag = "ActualWebView"
+                            ) {
+                                "Error getting document from iframe: ${t.message}"
+                            }
+                        }
+                    }
+                }
+
                 is HtmlLoadingState.Initializing -> state.loadingState = LoadingState.Initializing
             }
         }