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/*
* Copyright (C) 2018 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.Nullable;
import android.annotation.TestApi;
import android.icu.text.DateFormat;
import android.os.Parcel;
import android.os.Parcelable;
import android.util.Log;
import android.view.autofill.AutofillValue;
import com.android.internal.util.Preconditions;
import java.util.Date;
/**
* Sanitizes a date {@link AutofillValue} using a {@link DateFormat}.
*
* <p>For example, to sanitize a credit card expiration date to just its month and year:
*
* <pre class="prettyprint">
* new DateValueSanitizer(new java.text.SimpleDateFormat("MM/yyyy");
* </pre>
*/
public final class DateValueSanitizer extends InternalSanitizer implements Sanitizer, Parcelable {
private static final String TAG = "DateValueSanitizer";
private final DateFormat mDateFormat;
/**
* Default constructor.
*
* @param dateFormat date format applied to the actual date value of an input field.
*/
public DateValueSanitizer(@NonNull DateFormat dateFormat) {
mDateFormat = Preconditions.checkNotNull(dateFormat);
}
/** @hide */
@Override
@TestApi
@Nullable
public AutofillValue sanitize(@NonNull AutofillValue value) {
if (value == null) {
Log.w(TAG, "sanitize() called with null value");
return null;
}
if (!value.isDate()) {
if (sDebug) Log.d(TAG, value + " is not a date");
return null;
}
try {
final Date date = new Date(value.getDateValue());
// First convert it to string
final String converted = mDateFormat.format(date);
if (sDebug) Log.d(TAG, "Transformed " + date + " to " + converted);
// Then parse it back to date
final Date sanitized = mDateFormat.parse(converted);
if (sDebug) Log.d(TAG, "Sanitized to " + sanitized);
return AutofillValue.forDate(sanitized.getTime());
} catch (Exception e) {
Log.w(TAG, "Could not apply " + mDateFormat + " to " + value + ": " + e);
return null;
}
}
/////////////////////////////////////
// Object "contract" methods. //
/////////////////////////////////////
@Override
public String toString() {
if (!sDebug) return super.toString();
return "DateValueSanitizer: [dateFormat=" + mDateFormat + "]";
}
/////////////////////////////////////
// Parcelable "contract" methods. //
/////////////////////////////////////
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel parcel, int flags) {
parcel.writeSerializable(mDateFormat);
}
public static final @android.annotation.NonNull Parcelable.Creator<DateValueSanitizer> CREATOR =
new Parcelable.Creator<DateValueSanitizer>() {
@Override
public DateValueSanitizer createFromParcel(Parcel parcel) {
return new DateValueSanitizer((DateFormat) parcel.readSerializable());
}
@Override
public DateValueSanitizer[] newArray(int size) {
return new DateValueSanitizer[size];
}
};
}
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