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      1 /*
      2  * Copyright (C) 2017 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.support.text.emoji.widget;
     17 
     18 import static android.support.annotation.RestrictTo.Scope.LIBRARY_GROUP;
     19 
     20 import android.support.annotation.RequiresApi;
     21 import android.support.annotation.RestrictTo;
     22 import android.support.text.emoji.EmojiCompat;
     23 import android.text.Editable;
     24 import android.view.KeyEvent;
     25 import android.view.View;
     26 
     27 /**
     28  * KeyListener class to handle delete operations correctly.
     29  *
     30  * @hide
     31  */
     32 @RestrictTo(LIBRARY_GROUP)
     33 @RequiresApi(19)
     34 final class EmojiKeyListener implements android.text.method.KeyListener {
     35     private final android.text.method.KeyListener mKeyListener;
     36 
     37     EmojiKeyListener(android.text.method.KeyListener keyListener) {
     38         mKeyListener = keyListener;
     39     }
     40 
     41     @Override
     42     public int getInputType() {
     43         return mKeyListener.getInputType();
     44     }
     45 
     46     @Override
     47     public boolean onKeyDown(View view, Editable content, int keyCode, KeyEvent event) {
     48         final boolean result = EmojiCompat.handleOnKeyDown(content, keyCode, event);
     49         return result || mKeyListener.onKeyDown(view, content, keyCode, event);
     50     }
     51 
     52     @Override
     53     public boolean onKeyUp(View view, Editable text, int keyCode, KeyEvent event) {
     54         return mKeyListener.onKeyUp(view, text, keyCode, event);
     55     }
     56 
     57     @Override
     58     public boolean onKeyOther(View view, Editable text, KeyEvent event) {
     59         return mKeyListener.onKeyOther(view, text, event);
     60     }
     61 
     62     @Override
     63     public void clearMetaKeyState(View view, Editable content, int states) {
     64         mKeyListener.clearMetaKeyState(view, content, states);
     65     }
     66 }
     67