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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package android.text.method;
     17 
     18 import android.content.Context;
     19 import android.graphics.Rect;
     20 import android.util.Log;
     21 import android.view.View;
     22 
     23 import java.util.Locale;
     24 
     25 /**
     26  * Transforms source text into an ALL CAPS string, locale-aware.
     27  *
     28  * @hide
     29  */
     30 public class AllCapsTransformationMethod implements TransformationMethod2 {
     31     private static final String TAG = "AllCapsTransformationMethod";
     32 
     33     private boolean mEnabled;
     34     private Locale mLocale;
     35 
     36     public AllCapsTransformationMethod(Context context) {
     37         mLocale = context.getResources().getConfiguration().locale;
     38     }
     39 
     40     @Override
     41     public CharSequence getTransformation(CharSequence source, View view) {
     42         if (mEnabled) {
     43             return source != null ? source.toString().toUpperCase(mLocale) : null;
     44         }
     45         Log.w(TAG, "Caller did not enable length changes; not transforming text");
     46         return source;
     47     }
     48 
     49     @Override
     50     public void onFocusChanged(View view, CharSequence sourceText, boolean focused, int direction,
     51             Rect previouslyFocusedRect) {
     52     }
     53 
     54     @Override
     55     public void setLengthChangesAllowed(boolean allowLengthChanges) {
     56         mEnabled = allowLengthChanges;
     57     }
     58 
     59 }
     60