Add proxy option to demo app

Author: bommbomm34

demo-shared/src/commonMain/kotlin/io/github/kdroidfilter/webview/demo/DemoToolsPanel.kt

@@ -1,21 +1,9 @@
 package io.github.kdroidfilter.webview.demo
 
-import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.ColumnScope
-import androidx.compose.foundation.layout.ExperimentalLayoutApi
-import androidx.compose.foundation.layout.FlowRow
-import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.Spacer
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.height
-import androidx.compose.foundation.layout.heightIn
-import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.layout.width
-import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material3.Button
 import androidx.compose.material3.Card
@@ -31,12 +19,17 @@ import androidx.compose.material3.Switch
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
 import composewebview.demo_shared.generated.resources.Res
 import io.github.kdroidfilter.webview.cookie.Cookie
+import io.github.kdroidfilter.webview.setting.ProxyConfig
 import io.github.kdroidfilter.webview.util.KLogSeverity
 import io.github.kdroidfilter.webview.web.WebViewNavigator
 import io.github.kdroidfilter.webview.web.WebViewState
@@ -87,6 +80,9 @@ internal fun DemoToolsPanel(
     onSetLogSeverity: (KLogSeverity) -> Unit,
 ) {
     val scope = rememberCoroutineScope()
+    val desktopWebSettings = webViewState.webSettings.desktopWebSettings
+    var proxyType by remember { mutableStateOf("None") }
+    var proxyText by remember { mutableStateOf(desktopWebSettings.proxyConfig?.toString() ?: "") }
     Surface(modifier = modifier, color = MaterialTheme.colorScheme.surface) {
         Column(
             modifier = Modifier.fillMaxSize().verticalScroll(rememberScrollState()).padding(12.dp),
@@ -375,6 +371,29 @@ internal fun DemoToolsPanel(
                     singleLine = true,
                     label = { Text("Custom User-Agent") },
                 )
+                Spacer(Modifier.height(8.dp))
+                OutlinedTextField(
+                    value = proxyText,
+                    onValueChange = { proxyText = it },
+                    singleLine = true,
+                    label = { Text("Proxy (desktop only)") },
+                )
+                FlowRow(horizontalArrangement = Arrangement.spacedBy(8.dp), verticalArrangement = Arrangement.spacedBy(8.dp)) {
+                    listOf("None", "HTTP", "SOCKS5").forEach { type ->
+                        FilterChip(
+                            selected = proxyType == type,
+                            onClick = { proxyType = type },
+                            label = { Text(type) },
+                        )
+                    }
+                }
+                Button(
+                    onClick = {
+                        desktopWebSettings.proxyConfig = proxyText.ifBlank { null }?.parseProxyConfig(proxyType)
+                    }
+                ){
+                    Text("Set proxy")
+                }
             }
 
             SectionCard(title = "Logs") {
@@ -454,3 +473,14 @@ private fun inlineHtml(): String =
     </body>
     </html>
     """.trimIndent()
+
+private fun String.parseProxyConfig(proxyType: String): ProxyConfig? {
+    val host = substringBefore(":").ifBlank { null } ?: return null
+    val port = substringAfter(":").toIntOrNull() ?: return null
+    return when (proxyType) {
+        "None" -> null
+        "HTTP" -> ProxyConfig.Http(host, port)
+        "SOCKS5" -> ProxyConfig.Socks5(host, port)
+        else -> error("Invalid proxy type: $proxyType")
+    }
+}

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

@@ -13,4 +13,6 @@ sealed class ProxyConfig {
         override val host: String,
         override val port: Int
     ) : ProxyConfig()
+
+    override fun toString() = "$host:$port"
 }