export & copy page content as pdf/md

packages/flutter_mozilla_components/android/src/main/kotlin/eu/weblibre/flutter_mozilla_components/components/Core.kt

@@ -21,6 +21,7 @@ import eu.weblibre.flutter_mozilla_components.activities.NotificationActivity
 import eu.weblibre.flutter_mozilla_components.R
 import eu.weblibre.flutter_mozilla_components.ext.getPreferenceKey
 import eu.weblibre.flutter_mozilla_components.middleware.FlutterEventMiddleware
+import eu.weblibre.flutter_mozilla_components.middleware.SaveToPDFMiddleware
 import eu.weblibre.flutter_mozilla_components.pigeons.BrowserExtensionEvents
 import eu.weblibre.flutter_mozilla_components.pigeons.GeckoStateEvents
 import kotlinx.coroutines.FlowPreview
@@ -191,6 +192,7 @@ class Core(
                 SessionPrioritizationMiddleware(),
                 RecordingDevicesMiddleware(context, components.notificationsDelegate),
                 PromptMiddleware(),
+                SaveToPDFMiddleware(),
                 FileUploadsDirCleanerMiddleware(fileUploadsDirCleaner),
                 LastMediaAccessMiddleware(),
             ) + EngineMiddleware.create(

packages/flutter_mozilla_components/android/src/main/kotlin/eu/weblibre/flutter_mozilla_components/middleware/SaveToPDFMiddleware.kt

@@ -0,0 +1,32 @@
+package eu.weblibre.flutter_mozilla_components.middleware
+
+import mozilla.components.browser.state.action.BrowserAction
+import mozilla.components.browser.state.action.EngineAction
+import mozilla.components.browser.state.state.BrowserState
+import mozilla.components.feature.addons.logger
+import mozilla.components.lib.state.Middleware
+import mozilla.components.lib.state.MiddlewareContext
+
+class SaveToPDFMiddleware : Middleware<BrowserState, BrowserAction> {
+    override fun invoke(
+        context: MiddlewareContext<BrowserState, BrowserAction>,
+        next: (BrowserAction) -> Unit,
+        action: BrowserAction,
+    ) {
+        when (action) {
+            is EngineAction.SaveToPdfAction -> {
+                // Continue to generate the PDF, passing through here to add telemetry
+                next(action)
+            }
+            is EngineAction.SaveToPdfCompleteAction -> {
+                logger.info("Saved PDF successfully")
+            }
+            is EngineAction.SaveToPdfExceptionAction -> {
+                logger.error("Unable to save PDF", action.throwable)
+            }
+            else -> {
+                next(action)
+            }
+        }
+    }
+}