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.DragEvent; 21 import android.view.KeyEvent; 22 import android.view.inputmethod.InputMethodManager; 23 import android.widget.EditText; 24 25 26 /** 27 * The edit text that reports back when the back key has been pressed. 28 */ 29 public class ExtendedEditText extends EditText { 30 31 private boolean mShowImeAfterFirstLayout; 32 33 /** 34 * Implemented by listeners of the back key. 35 */ 36 public interface OnBackKeyListener { onBackKey()37 public boolean onBackKey(); 38 } 39 40 private OnBackKeyListener mBackKeyListener; 41 ExtendedEditText(Context context)42 public ExtendedEditText(Context context) { 43 // ctor chaining breaks the touch handling 44 super(context); 45 } 46 ExtendedEditText(Context context, AttributeSet attrs)47 public ExtendedEditText(Context context, AttributeSet attrs) { 48 // ctor chaining breaks the touch handling 49 super(context, attrs); 50 } 51 ExtendedEditText(Context context, AttributeSet attrs, int defStyleAttr)52 public ExtendedEditText(Context context, AttributeSet attrs, int defStyleAttr) { 53 super(context, attrs, defStyleAttr); 54 } 55 setOnBackKeyListener(OnBackKeyListener listener)56 public void setOnBackKeyListener(OnBackKeyListener listener) { 57 mBackKeyListener = listener; 58 } 59 60 @Override onKeyPreIme(int keyCode, KeyEvent event)61 public boolean onKeyPreIme(int keyCode, KeyEvent event) { 62 // If this is a back key, propagate the key back to the listener 63 if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_UP) { 64 if (mBackKeyListener != null) { 65 return mBackKeyListener.onBackKey(); 66 } 67 return false; 68 } 69 return super.onKeyPreIme(keyCode, event); 70 } 71 72 @Override onDragEvent(DragEvent event)73 public boolean onDragEvent(DragEvent event) { 74 // We don't want this view to interfere with Launcher own drag and drop. 75 return false; 76 } 77 78 @Override onLayout(boolean changed, int left, int top, int right, int bottom)79 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 80 super.onLayout(changed, left, top, right, bottom); 81 if (mShowImeAfterFirstLayout) { 82 // soft input only shows one frame after the layout of the EditText happens, 83 post(new Runnable() { 84 @Override 85 public void run() { 86 showSoftInput(); 87 mShowImeAfterFirstLayout = false; 88 } 89 }); 90 } 91 } 92 showKeyboard()93 public void showKeyboard() { 94 mShowImeAfterFirstLayout = !showSoftInput(); 95 } 96 showSoftInput()97 private boolean showSoftInput() { 98 return requestFocus() && 99 ((InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE)) 100 .showSoftInput(this, InputMethodManager.SHOW_IMPLICIT); 101 } 102 } 103