| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package android.service.autofill; |
| |
| import static android.view.autofill.Helper.sDebug; |
| |
| import android.annotation.NonNull; |
| import android.annotation.TestApi; |
| import android.os.Parcelable; |
| import android.util.Log; |
| import android.util.Pair; |
| import android.widget.RemoteViews; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * Superclass of all transformation the system understands. As this is not public all |
| * subclasses have to implement {@link Transformation} again. |
| * |
| * @hide |
| */ |
| @TestApi |
| public abstract class InternalTransformation implements Transformation, Parcelable { |
| |
| private static final String TAG = "InternalTransformation"; |
| |
| /** |
| * Applies this transformation to a child view of a {@link android.widget.RemoteViews |
| * presentation template}. |
| * |
| * @param finder object used to find the value of a field in the screen. |
| * @param template the {@link RemoteViews presentation template}. |
| * @param childViewId resource id of the child view inside the template. |
| */ |
| abstract void apply(@NonNull ValueFinder finder, @NonNull RemoteViews template, |
| int childViewId) throws Exception; |
| |
| /** |
| * Applies multiple transformations to the children views of a |
| * {@link android.widget.RemoteViews presentation template}. |
| * |
| * @param finder object used to find the value of a field in the screen. |
| * @param template the {@link RemoteViews presentation template}. |
| * @param transformations map of resource id of the child view inside the template to |
| * transformation. |
| */ |
| public static boolean batchApply(@NonNull ValueFinder finder, @NonNull RemoteViews template, |
| @NonNull ArrayList<Pair<Integer, InternalTransformation>> transformations) { |
| final int size = transformations.size(); |
| if (sDebug) Log.d(TAG, "getPresentation(): applying " + size + " transformations"); |
| for (int i = 0; i < size; i++) { |
| final Pair<Integer, InternalTransformation> pair = transformations.get(i); |
| final int id = pair.first; |
| final InternalTransformation transformation = pair.second; |
| if (sDebug) Log.d(TAG, "#" + i + ": " + transformation); |
| |
| try { |
| transformation.apply(finder, template, id); |
| } catch (Exception e) { |
| // Do not log full exception to avoid PII leaking |
| Log.e(TAG, "Could not apply transformation " + transformation + ": " |
| + e.getClass()); |
| return false; |
| } |
| } |
| return true; |
| } |
| } |