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      1 /*
      2  * Copyright (C) 2010 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 
     17 package com.android.contacts;
     18 
     19 import android.content.Context;
     20 import android.graphics.drawable.Drawable;
     21 import android.text.TextUtils;
     22 import android.util.AttributeSet;
     23 import android.view.KeyEvent;
     24 import android.widget.EditText;
     25 
     26 /**
     27  * A custom text editor that helps automatically dismiss the activity along with the soft
     28  * keyboard.
     29  */
     30 public class SearchEditText extends EditText {
     31 
     32     private boolean mMagnifyingGlassShown = true;
     33     private Drawable mMagnifyingGlass;
     34 
     35     public SearchEditText(Context context, AttributeSet attrs) {
     36         super(context, attrs);
     37         mMagnifyingGlass = getCompoundDrawables()[2];
     38     }
     39 
     40     /**
     41      * Conditionally shows a magnifying glass icon on the right side of the text field
     42      * when the text it empty.
     43      */
     44     @Override
     45     public boolean onPreDraw() {
     46         boolean emptyText = TextUtils.isEmpty(getText());
     47         if (mMagnifyingGlassShown != emptyText) {
     48             mMagnifyingGlassShown = emptyText;
     49             if (mMagnifyingGlassShown) {
     50                 setCompoundDrawables(null, null, mMagnifyingGlass, null);
     51             } else {
     52                 setCompoundDrawables(null, null, null, null);
     53             }
     54             return false;
     55         }
     56         return super.onPreDraw();
     57     }
     58 
     59     /**
     60      * Forwards the onKeyPreIme call to the view's activity.
     61      */
     62     @Override
     63     public boolean onKeyPreIme(int keyCode, KeyEvent event) {
     64         if (((ContactsListActivity)getContext()).onKeyPreIme(keyCode, event)) {
     65             return true;
     66         }
     67         return super.onKeyPreIme(keyCode, event);
     68     }
     69 }
     70