/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3;
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import android.content.Context;
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import android.text.TextUtils;
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import android.util.AttributeSet;
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import android.view.DragEvent;
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import android.view.KeyEvent;
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import android.view.View;
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import android.view.inputmethod.InputMethodManager;
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import android.widget.EditText;
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import com.android.launcher3.util.UiThreadHelper;
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/**
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* The edit text that reports back when the back key has been pressed.
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*/
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public class ExtendedEditText extends EditText {
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private boolean mShowImeAfterFirstLayout;
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private boolean mForceDisableSuggestions = false;
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/**
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* Implemented by listeners of the back key.
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*/
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public interface OnBackKeyListener {
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public boolean onBackKey();
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}
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private OnBackKeyListener mBackKeyListener;
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public ExtendedEditText(Context context) {
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// ctor chaining breaks the touch handling
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super(context);
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}
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public ExtendedEditText(Context context, AttributeSet attrs) {
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// ctor chaining breaks the touch handling
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super(context, attrs);
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}
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public ExtendedEditText(Context context, AttributeSet attrs, int defStyleAttr) {
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super(context, attrs, defStyleAttr);
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}
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public void setOnBackKeyListener(OnBackKeyListener listener) {
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mBackKeyListener = listener;
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}
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@Override
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public boolean onKeyPreIme(int keyCode, KeyEvent event) {
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// If this is a back key, propagate the key back to the listener
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if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_UP) {
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if (mBackKeyListener != null) {
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return mBackKeyListener.onBackKey();
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}
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return false;
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}
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return super.onKeyPreIme(keyCode, event);
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}
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@Override
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public boolean onDragEvent(DragEvent event) {
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// We don't want this view to interfere with Launcher own drag and drop.
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return false;
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}
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@Override
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protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
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super.onLayout(changed, left, top, right, bottom);
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if (mShowImeAfterFirstLayout) {
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// soft input only shows one frame after the layout of the EditText happens,
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post(new Runnable() {
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@Override
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public void run() {
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showSoftInput();
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mShowImeAfterFirstLayout = false;
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}
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});
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}
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}
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public void showKeyboard() {
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mShowImeAfterFirstLayout = !showSoftInput();
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}
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public void hideKeyboard() {
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UiThreadHelper.hideKeyboardAsync(getContext(), getWindowToken());
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}
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private boolean showSoftInput() {
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return requestFocus() &&
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((InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE))
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.showSoftInput(this, InputMethodManager.SHOW_IMPLICIT);
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}
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public void dispatchBackKey() {
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hideKeyboard();
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if (mBackKeyListener != null) {
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mBackKeyListener.onBackKey();
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}
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}
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/**
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* Set to true when you want isSuggestionsEnabled to return false.
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* Use this to disable the red underlines that appear under typos when suggestions is enabled.
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*/
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public void forceDisableSuggestions(boolean forceDisableSuggestions) {
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mForceDisableSuggestions = forceDisableSuggestions;
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}
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@Override
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public boolean isSuggestionsEnabled() {
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return !mForceDisableSuggestions && super.isSuggestionsEnabled();
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}
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public void reset() {
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if (!TextUtils.isEmpty(getText())) {
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setText("");
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}
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if (isFocused()) {
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View nextFocus = focusSearch(View.FOCUS_DOWN);
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if (nextFocus != null) {
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nextFocus.requestFocus();
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}
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}
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hideKeyboard();
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}
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}
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