reimplement assist content

mastodon/src/main/java/org/joinmastodon/android/utils/ProvidesAssistContent.java

@@ -0,0 +1,32 @@
+package org.joinmastodon.android.utils;
+
+import android.app.Fragment;
+import android.app.assist.AssistContent;
+import android.net.Uri;
+
+import org.joinmastodon.android.fragments.HasAccountID;
+
+public interface ProvidesAssistContent {
+    void onProvideAssistContent(AssistContent assistContent);
+
+    default boolean callFragmentToProvideAssistContent(Fragment fragment, AssistContent assistContent) {
+        if (fragment instanceof ProvidesAssistContent assistiveFragment) {
+            assistiveFragment.onProvideAssistContent(assistContent);
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    interface ProvidesWebUri extends ProvidesAssistContent, HasAccountID {
+        Uri getWebUri(Uri.Builder base);
+
+        default Uri.Builder getUriBuilder() {
+            return getSession().getInstanceUri().buildUpon();
+        }
+
+        default void onProvideAssistContent(AssistContent assistContent) {
+            assistContent.setWebUri(getWebUri(getUriBuilder()));
+        }
+    }
+}