Home | History | Annotate | Download | only in launcher3 
      1 /*
      2  * Copyright (C) 2015 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 com.android.launcher3;
     17 
     18 import android.content.Context;
     19 import android.util.AttributeSet;
     20 import android.view.KeyEvent;
     21 import android.widget.EditText;
     22 
     23 
     24 /**
     25  * The edit text that reports back when the back key has been pressed.
     26  */
     27 public class ExtendedEditText extends EditText {
     28 
     29     /**
     30      * Implemented by listeners of the back key.
     31      */
     32     public interface OnBackKeyListener {
     33         public boolean onBackKey();
     34     }
     35 
     36     private OnBackKeyListener mBackKeyListener;
     37 
     38     public ExtendedEditText(Context context) {
     39         super(context);
     40     }
     41 
     42     public ExtendedEditText(Context context, AttributeSet attrs) {
     43         super(context, attrs);
     44     }
     45 
     46     public ExtendedEditText(Context context, AttributeSet attrs, int defStyleAttr) {
     47         super(context, attrs, defStyleAttr);
     48     }
     49 
     50     public void setOnBackKeyListener(OnBackKeyListener listener) {
     51         mBackKeyListener = listener;
     52     }
     53 
     54     @Override
     55     public boolean onKeyPreIme(int keyCode, KeyEvent event) {
     56         // If this is a back key, propagate the key back to the listener
     57         if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_UP) {
     58             if (mBackKeyListener != null) {
     59                 return mBackKeyListener.onBackKey();
     60             }
     61             return false;
     62         }
     63         return super.onKeyPreIme(keyCode, event);
     64     }
     65 }
     66