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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 static com.android.launcher3.logging.KeyboardStateManager.KeyboardState.SHOW;
import android.content.Context;
import android.graphics.Rect;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.view.DragEvent;
import android.view.KeyEvent;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;
import com.android.launcher3.views.ActivityContext;
import java.util.HashSet;
import java.util.Set;
/**
* The edit text that reports back when the back key has been pressed.
* Note: AppCompatEditText doesn't fully support #displayCompletions and #onCommitCompletion
*/
public class ExtendedEditText extends EditText {
private final Set<OnFocusChangeListener> mOnFocusChangeListeners = new HashSet<>();
private boolean mForceDisableSuggestions = false;
/**
* Implemented by listeners of the back key.
*/
public interface OnBackKeyListener {
boolean onBackKey();
}
private OnBackKeyListener mBackKeyListener;
public ExtendedEditText(Context context) {
// ctor chaining breaks the touch handling
super(context);
}
public ExtendedEditText(Context context, AttributeSet attrs) {
// ctor chaining breaks the touch handling
super(context, attrs);
}
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 (TextUtils.isEmpty(getText())) {
hideKeyboard();
}
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;
}
public void showKeyboard() {
onKeyboardShown();
showSoftInput();
}
public void hideKeyboard() {
ActivityContext.lookupContext(getContext()).hideKeyboard();
clearFocus();
}
protected void onKeyboardShown() {
ActivityContext.lookupContext(getContext()).getStatsLogManager()
.keyboardStateManager().setKeyboardState(SHOW);
}
private boolean showSoftInput() {
return requestFocus() &&
getContext().getSystemService(InputMethodManager.class)
.showSoftInput(this, InputMethodManager.SHOW_IMPLICIT);
}
public void dispatchBackKey() {
hideKeyboard();
if (mBackKeyListener != null) {
mBackKeyListener.onBackKey();
}
}
/**
* Set to true when you want isSuggestionsEnabled to return false.
* Use this to disable the red underlines that appear under typos when suggestions is enabled.
*/
public void forceDisableSuggestions(boolean forceDisableSuggestions) {
mForceDisableSuggestions = forceDisableSuggestions;
}
@Override
public boolean isSuggestionsEnabled() {
return !mForceDisableSuggestions && super.isSuggestionsEnabled();
}
public void reset() {
if (!TextUtils.isEmpty(getText())) {
setText("");
}
}
/**
* This method should be preferred to {@link #setOnFocusChangeListener(OnFocusChangeListener)},
* as it allows for multiple listeners from different sources.
*/
public void addOnFocusChangeListener(OnFocusChangeListener listener) {
mOnFocusChangeListeners.add(listener);
}
/**
* Removes the given listener from the set of registered focus listeners, or does nothing if it
* wasn't registered in the first place.
*/
public void removeOnFocusChangeListener(OnFocusChangeListener listener) {
mOnFocusChangeListeners.remove(listener);
}
@Override
protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
super.onFocusChanged(focused, direction, previouslyFocusedRect);
for (OnFocusChangeListener listener : mOnFocusChangeListeners) {
listener.onFocusChange(this, focused);
}
}
/**
* Save the input, suggestion, hint states when it's on focus, and set to unfocused states.
*/
public void saveFocusedStateAndUpdateToUnfocusedState() {}
/**
* Restore to the previous saved focused state.
*/
public void restoreToFocusedState() {}
}
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