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/*
* Copyright (C) 2011 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.text.method;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.compat.annotation.UnsupportedAppUsage;
import android.content.Context;
import android.graphics.Rect;
import android.text.Spanned;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
import java.util.Locale;
/**
* Transforms source text into an ALL CAPS string, locale-aware.
*
* @hide
*/
public class AllCapsTransformationMethod implements TransformationMethod2 {
private static final String TAG = "AllCapsTransformationMethod";
private boolean mEnabled;
private Locale mLocale;
@UnsupportedAppUsage
public AllCapsTransformationMethod(@NonNull Context context) {
mLocale = context.getResources().getConfiguration().getLocales().get(0);
}
@Override
public CharSequence getTransformation(@Nullable CharSequence source, View view) {
if (!mEnabled) {
Log.w(TAG, "Caller did not enable length changes; not transforming text");
return source;
}
if (source == null) {
return null;
}
Locale locale = null;
if (view instanceof TextView) {
locale = ((TextView)view).getTextLocale();
}
if (locale == null) {
locale = mLocale;
}
final boolean copySpans = source instanceof Spanned;
return TextUtils.toUpperCase(locale, source, copySpans);
}
@Override
public void onFocusChanged(View view, CharSequence sourceText, boolean focused, int direction,
Rect previouslyFocusedRect) {
}
@Override
public void setLengthChangesAllowed(boolean allowLengthChanges) {
mEnabled = allowLengthChanges;
}
}
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