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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.launcher3;
import android.content.Context;
import android.util.AttributeSet;
import android.view.DragEvent;
import android.view.KeyEvent;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;
/**
* The edit text that reports back when the back key has been pressed.
*/
public class ExtendedEditText extends EditText {
private boolean mShowImeAfterFirstLayout;
/**
* Implemented by listeners of the back key.
*/
public interface OnBackKeyListener {
public boolean onBackKey();
}
private OnBackKeyListener mBackKeyListener;
public ExtendedEditText(Context context) {
this(context, null, 0);
}
public ExtendedEditText(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public ExtendedEditText(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
public void setOnBackKeyListener(OnBackKeyListener listener) {
mBackKeyListener = listener;
}
@Override
public boolean onKeyPreIme(int keyCode, KeyEvent event) {
// If this is a back key, propagate the key back to the listener
if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_UP) {
if (mBackKeyListener != null) {
return mBackKeyListener.onBackKey();
}
return false;
}
return super.onKeyPreIme(keyCode, event);
}
@Override
public boolean onDragEvent(DragEvent event) {
// We don't want this view to interfere with Launcher own drag and drop.
return false;
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
super.onLayout(changed, left, top, right, bottom);
if (mShowImeAfterFirstLayout) {
// soft input only shows one frame after the layout of the EditText happens,
post(new Runnable() {
@Override
public void run() {
showSoftInput();
mShowImeAfterFirstLayout = false;
}
});
}
}
public void showKeyboard() {
mShowImeAfterFirstLayout = !showSoftInput();
}
private boolean showSoftInput() {
return requestFocus() &&
((InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE))
.showSoftInput(this, InputMethodManager.SHOW_FORCED);
}
}
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