handle PermissionRequests in the WebChromeClient

KevinnZou · Sep 4, 2024 · e6761c9 · e6761c9
1 parent 985beb5
commit e6761c9
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diff --git a/webview/src/androidMain/kotlin/com/multiplatform/webview/web/AccompanistWebView.kt b/webview/src/androidMain/kotlin/com/multiplatform/webview/web/AccompanistWebView.kt
@@ -1,10 +1,12 @@
 package com.multiplatform.webview.web
 
 import android.content.Context
+import android.content.pm.PackageManager
 import android.content.res.Configuration
 import android.graphics.Bitmap
 import android.os.Build
 import android.view.ViewGroup
+import android.webkit.PermissionRequest
 import android.webkit.WebChromeClient
 import android.webkit.WebResourceError
 import android.webkit.WebResourceRequest
@@ -19,6 +21,7 @@ import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.toArgb
 import androidx.compose.ui.viewinterop.AndroidView
+import androidx.core.content.ContextCompat
 import androidx.webkit.WebSettingsCompat
 import androidx.webkit.WebViewFeature
 import com.multiplatform.webview.jsbridge.WebViewJsBridge
@@ -171,6 +174,7 @@ fun AccompanistWebView(
                     this.restoreState(it)
                 }
 
+                chromeClient.context = context
                 webChromeClient = chromeClient
                 webViewClient = client
 
@@ -389,6 +393,8 @@ open class AccompanistWebViewClient : WebViewClient() {
 open class AccompanistWebChromeClient : WebChromeClient() {
     open lateinit var state: WebViewState
         internal set
+    lateinit var context: Context
+        internal set
     private var lastLoadedUrl = ""
 
     override fun onReceivedTitle(
@@ -425,4 +431,59 @@ open class AccompanistWebChromeClient : WebChromeClient() {
             }
         lastLoadedUrl = view.url ?: ""
     }
+
+    override fun onPermissionRequest(request: PermissionRequest) {
+        val grantedPermissions = mutableListOf<String>()
+        KLogger.d { "onPermissionRequest received request for resources [${request.resources}]" }
+
+        request.resources.forEach { resource ->
+            var androidPermission: String? = null
+
+            when (resource) {
+                PermissionRequest.RESOURCE_AUDIO_CAPTURE -> {
+                    androidPermission = android.Manifest.permission.RECORD_AUDIO
+                }
+
+                PermissionRequest.RESOURCE_MIDI_SYSEX -> {
+                    // MIDI sysex is only available on Android M and above
+                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+                        if (state.webSettings.androidWebSettings.allowMidiSysexMessages) {
+                            grantedPermissions.add(PermissionRequest.RESOURCE_MIDI_SYSEX)
+                        }
+                    }
+                }
+
+                PermissionRequest.RESOURCE_PROTECTED_MEDIA_ID -> {
+                    if (state.webSettings.androidWebSettings.allowProtectedMedia) {
+                        grantedPermissions.add(PermissionRequest.RESOURCE_PROTECTED_MEDIA_ID)
+                    }
+                }
+
+                PermissionRequest.RESOURCE_VIDEO_CAPTURE -> {
+                    androidPermission = android.Manifest.permission.CAMERA
+                }
+            }
+
+            if (androidPermission != null) {
+                if (ContextCompat.checkSelfPermission(context, androidPermission) == PackageManager.PERMISSION_GRANTED) {
+                    grantedPermissions.add(resource)
+                    KLogger.d {
+                        "onPermissionRequest permission [$androidPermission] was already granted for resource [$resource]"
+                    }
+                } else {
+                    KLogger.w {
+                        "onPermissionRequest didn't find already granted permission [$androidPermission] for resource [$resource]"
+                    }
+                }
+            }
+        }
+
+        if (grantedPermissions.isNotEmpty()) {
+            request.grant(grantedPermissions.toTypedArray())
+            KLogger.d { "onPermissionRequest granted permissions: ${grantedPermissions.joinToString()}" }
+        } else {
+            request.deny()
+            KLogger.d { "onPermissionRequest denied permissions: ${request.resources}" }
+        }
+    }
 }
diff --git a/webview/src/commonMain/kotlin/com/multiplatform/webview/setting/PlatformWebSettings.kt b/webview/src/commonMain/kotlin/com/multiplatform/webview/setting/PlatformWebSettings.kt
@@ -166,6 +166,19 @@ sealed class PlatformWebSettings {
          * Whether the a user gesture is required to play media. The default is {@code true}.
          */
         var mediaPlaybackRequiresUserGesture: Boolean = true,
+        /**
+         * Controls whether the `RESOURCE_PROTECTED_MEDIA_ID` permission requests should be
+         * automatically granted or not. Necessary to be able to play back DRM protected media
+         * inside the WebView.
+         * The default is {@code false}.
+         */
+        var allowProtectedMedia: Boolean = false,
+        /**
+         * Controls whether the `RESOURCE_MIDI_SYSEX` permission requests should be automatically
+         * granted or not. The resource will allow sysex messages to be sent to or received from MIDI
+         * devices. Available on API level 21 and above.
+         */
+        var allowMidiSysexMessages: Boolean = false,
         /**
          * The Layer Type of the WebView.
          * Default is [LayerType.HARDWARE]