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