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