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 private boolean mForceDisableSuggestions = false; 33 34 /** 35 * Implemented by listeners of the back key. 36 */ 37 public interface OnBackKeyListener { 38 public boolean onBackKey(); 39 } 40 41 private OnBackKeyListener mBackKeyListener; 42 43 public ExtendedEditText(Context context) { 44 // ctor chaining breaks the touch handling 45 super(context); 46 } 47 48 public ExtendedEditText(Context context, AttributeSet attrs) { 49 // ctor chaining breaks the touch handling 50 super(context, attrs); 51 } 52 53 public ExtendedEditText(Context context, AttributeSet attrs, int defStyleAttr) { 54 super(context, attrs, defStyleAttr); 55 } 56 57 public void setOnBackKeyListener(OnBackKeyListener listener) { 58 mBackKeyListener = listener; 59 } 60 61 @Override 62 public boolean onKeyPreIme(int keyCode, KeyEvent event) { 63 // If this is a back key, propagate the key back to the listener 64 if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_UP) { 65 if (mBackKeyListener != null) { 66 return mBackKeyListener.onBackKey(); 67 } 68 return false; 69 } 70 return super.onKeyPreIme(keyCode, event); 71 } 72 73 @Override 74 public boolean onDragEvent(DragEvent event) { 75 // We don't want this view to interfere with Launcher own drag and drop. 76 return false; 77 } 78 79 @Override 80 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 81 super.onLayout(changed, left, top, right, bottom); 82 if (mShowImeAfterFirstLayout) { 83 // soft input only shows one frame after the layout of the EditText happens, 84 post(new Runnable() { 85 @Override 86 public void run() { 87 showSoftInput(); 88 mShowImeAfterFirstLayout = false; 89 } 90 }); 91 } 92 } 93 94 public void showKeyboard() { 95 mShowImeAfterFirstLayout = !showSoftInput(); 96 } 97 98 private boolean showSoftInput() { 99 return requestFocus() && 100 ((InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE)) 101 .showSoftInput(this, InputMethodManager.SHOW_IMPLICIT); 102 } 103 104 public void dispatchBackKey() { 105 ((InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE)) 106 .hideSoftInputFromWindow(getWindowToken(), 0); 107 if (mBackKeyListener != null) { 108 mBackKeyListener.onBackKey(); 109 } 110 } 111 112 /** 113 * Set to true when you want isSuggestionsEnabled to return false. 114 * Use this to disable the red underlines that appear under typos when suggestions is enabled. 115 */ 116 public void forceDisableSuggestions(boolean forceDisableSuggestions) { 117 mForceDisableSuggestions = forceDisableSuggestions; 118 } 119 120 @Override 121 public boolean isSuggestionsEnabled() { 122 return !mForceDisableSuggestions && super.isSuggestionsEnabled(); 123 } 124 } 125