Add uninstall option in the capabilities confirm dialog

Uninstall option is visible only when the application of the
service is not system App. It provides an efficient way to
uninstall the App if users are shocked with the perimssions
they need to grant.

Bug: 176877955
Test: Install an App with AccessibilityService and uninstall
it with this option.

Change-Id: I6b60cc56d8d34c2983458a676b500035551ec9df

src/com/android/settings/accessibility/AccessibilityServiceWarning.java

@@ -35,6 +35,7 @@ import android.widget.ImageView;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import androidx.annotation.NonNull;
 import androidx.appcompat.app.AlertDialog;
 import androidx.core.content.ContextCompat;
 
@@ -60,11 +61,19 @@ public class AccessibilityServiceWarning {
         return false;
     };
 
+    /**
+     * The interface to execute the uninstallation action.
+     */
+    interface UninstallActionPerformer {
+        void uninstallPackage();
+    }
+
     /** Returns a {@link Dialog} to be shown to confirm that they want to enable a service. */
-    public static Dialog createCapabilitiesDialog(Context context,
-            AccessibilityServiceInfo info, View.OnClickListener listener) {
+    public static Dialog createCapabilitiesDialog(@NonNull Context context,
+            @NonNull AccessibilityServiceInfo info, @NonNull View.OnClickListener listener,
+            @NonNull UninstallActionPerformer performer) {
         final AlertDialog ad = new AlertDialog.Builder(context)
-                .setView(createEnableDialogContentView(context, info, listener))
+                .setView(createEnableDialogContentView(context, info, listener, performer))
                 .create();
 
         Window window = ad.getWindow();
@@ -88,7 +97,8 @@ public class AccessibilityServiceWarning {
     }
 
     private static View createEnableDialogContentView(Context context,
-            AccessibilityServiceInfo info, View.OnClickListener listener) {
+            @NonNull AccessibilityServiceInfo info, View.OnClickListener listener,
+            UninstallActionPerformer performer) {
         LayoutInflater inflater = (LayoutInflater) context.getSystemService(
                 Context.LAYOUT_INFLATER_SERVICE);
 
@@ -129,6 +139,14 @@ public class AccessibilityServiceWarning {
         permissionAllowButton.setOnTouchListener(filterTouchListener);
         permissionDenyButton.setOnClickListener(listener);
 
+        final Button uninstallButton = content.findViewById(
+                R.id.permission_enable_uninstall_button);
+        // Shows an uninstall button to help users quickly remove the non-system App due to the
+        // required permissions.
+        if (!AccessibilityUtil.isSystemApp(info)) {
+            uninstallButton.setVisibility(View.VISIBLE);
+            uninstallButton.setOnClickListener(v -> performer.uninstallPackage());
+        }
         return content;
     }