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/*
* Copyright (C) 2022 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.settings.inputmethod;
import android.app.settings.SettingsEnums;
import android.content.Context;
import android.hardware.input.InputDeviceIdentifier;
import android.hardware.input.InputManager;
import android.hardware.input.KeyboardLayout;
import android.os.Bundle;
import android.view.inputmethod.InputMethodInfo;
import android.view.inputmethod.InputMethodSubtype;
import androidx.fragment.app.Fragment;
import androidx.preference.Preference;
import androidx.preference.PreferenceScreen;
import com.android.settings.R;
import com.android.settings.core.BasePreferenceController;
import com.android.settings.overlay.FeatureFactory;
import com.android.settings.widget.TickButtonPreference;
import com.android.settingslib.core.instrumentation.MetricsFeatureProvider;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnStart;
import com.android.settingslib.core.lifecycle.events.OnStop;
import java.util.HashMap;
import java.util.Map;
public class NewKeyboardLayoutPickerController extends BasePreferenceController implements
InputManager.InputDeviceListener, LifecycleObserver, OnStart, OnStop {
private final InputManager mIm;
private final Map<TickButtonPreference, KeyboardLayout> mPreferenceMap;
private Fragment mParent;
private CharSequence mTitle;
private int mInputDeviceId;
private int mUserId;
private InputDeviceIdentifier mInputDeviceIdentifier;
private InputMethodInfo mInputMethodInfo;
private InputMethodSubtype mInputMethodSubtype;
private KeyboardLayout[] mKeyboardLayouts;
private PreferenceScreen mScreen;
private String mPreviousSelection;
private String mFinalSelectedLayout;
private String mLayout;
private MetricsFeatureProvider mMetricsFeatureProvider;
private KeyboardLayoutSelectedCallback mKeyboardLayoutSelectedCallback;
public NewKeyboardLayoutPickerController(Context context, String key) {
super(context, key);
mIm = context.getSystemService(InputManager.class);
mInputDeviceId = -1;
mPreferenceMap = new HashMap<>();
mMetricsFeatureProvider = FeatureFactory.getFeatureFactory().getMetricsFeatureProvider();
}
public void initialize(Fragment parent) {
mParent = parent;
Bundle arguments = parent.getArguments();
mTitle = arguments.getCharSequence(NewKeyboardSettingsUtils.EXTRA_TITLE);
mUserId = arguments.getInt(NewKeyboardSettingsUtils.EXTRA_USER_ID);
mInputDeviceIdentifier =
arguments.getParcelable(NewKeyboardSettingsUtils.EXTRA_INPUT_DEVICE_IDENTIFIER);
mInputMethodInfo =
arguments.getParcelable(NewKeyboardSettingsUtils.EXTRA_INPUT_METHOD_INFO);
mInputMethodSubtype =
arguments.getParcelable(NewKeyboardSettingsUtils.EXTRA_INPUT_METHOD_SUBTYPE);
mLayout = getSelectedLayoutLabel();
mFinalSelectedLayout = mLayout;
mKeyboardLayouts = mIm.getKeyboardLayoutListForInputDevice(
mInputDeviceIdentifier, mUserId, mInputMethodInfo, mInputMethodSubtype);
NewKeyboardSettingsUtils.sortKeyboardLayoutsByLabel(mKeyboardLayouts);
parent.getActivity().setTitle(mTitle);
}
@Override
public void onStart() {
mIm.registerInputDeviceListener(this, null);
if (mInputDeviceIdentifier == null
|| NewKeyboardSettingsUtils.getInputDevice(mIm, mInputDeviceIdentifier) == null) {
return;
}
mInputDeviceId =
NewKeyboardSettingsUtils.getInputDevice(mIm, mInputDeviceIdentifier).getId();
}
@Override
public void onStop() {
if (mLayout != null && !mLayout.equals(mFinalSelectedLayout)) {
String change = "From:" + mLayout + ", to:" + mFinalSelectedLayout;
mMetricsFeatureProvider.action(
mContext, SettingsEnums.ACTION_PK_LAYOUT_CHANGED, change);
}
mIm.unregisterInputDeviceListener(this);
mInputDeviceId = -1;
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
mScreen = screen;
createPreferenceHierarchy();
}
@Override
public int getAvailabilityStatus() {
return AVAILABLE;
}
/**
* Registers {@link KeyboardLayoutSelectedCallback} and get updated.
*/
public void registerKeyboardSelectedCallback(KeyboardLayoutSelectedCallback
keyboardLayoutSelectedCallback) {
this.mKeyboardLayoutSelectedCallback = keyboardLayoutSelectedCallback;
}
@Override
public boolean handlePreferenceTreeClick(Preference preference) {
if (!(preference instanceof TickButtonPreference)) {
return false;
}
final TickButtonPreference pref = (TickButtonPreference) preference;
if (mKeyboardLayoutSelectedCallback != null && mPreferenceMap.containsKey(preference)) {
mKeyboardLayoutSelectedCallback.onSelected(mPreferenceMap.get(preference));
}
pref.setSelected(true);
if (mPreviousSelection != null && !mPreviousSelection.equals(preference.getKey())) {
TickButtonPreference preSelectedPref = mScreen.findPreference(mPreviousSelection);
preSelectedPref.setSelected(false);
}
setLayout(pref);
mPreviousSelection = preference.getKey();
mFinalSelectedLayout = pref.getTitle().toString();
return true;
}
@Override
public void onInputDeviceAdded(int deviceId) {
// Do nothing.
}
@Override
public void onInputDeviceRemoved(int deviceId) {
if (mInputDeviceId >= 0 && deviceId == mInputDeviceId) {
mParent.getActivity().finish();
}
}
@Override
public void onInputDeviceChanged(int deviceId) {
// Do nothing.
}
private void createPreferenceHierarchy() {
if (mKeyboardLayouts == null) {
return;
}
for (KeyboardLayout layout : mKeyboardLayouts) {
final TickButtonPreference pref;
pref = new TickButtonPreference(mScreen.getContext());
pref.setTitle(layout.getLabel());
if (mLayout.equals(layout.getLabel())) {
if (mKeyboardLayoutSelectedCallback != null) {
mKeyboardLayoutSelectedCallback.onSelected(layout);
}
pref.setSelected(true);
mPreviousSelection = layout.getDescriptor();
}
pref.setKey(layout.getDescriptor());
mScreen.addPreference(pref);
mPreferenceMap.put(pref, layout);
}
}
private void setLayout(TickButtonPreference preference) {
mIm.setKeyboardLayoutForInputDevice(
mInputDeviceIdentifier,
mUserId,
mInputMethodInfo,
mInputMethodSubtype,
mPreferenceMap.get(preference).getDescriptor());
}
private String getSelectedLayoutLabel() {
String label = mContext.getString(R.string.keyboard_default_layout);
String layout = NewKeyboardSettingsUtils.getKeyboardLayout(
mIm, mUserId, mInputDeviceIdentifier, mInputMethodInfo, mInputMethodSubtype);
KeyboardLayout[] keyboardLayouts = NewKeyboardSettingsUtils.getKeyboardLayouts(
mIm, mUserId, mInputDeviceIdentifier, mInputMethodInfo, mInputMethodSubtype);
if (layout != null) {
for (KeyboardLayout keyboardLayout : keyboardLayouts) {
if (keyboardLayout.getDescriptor().equals(layout)) {
label = keyboardLayout.getLabel();
break;
}
}
}
return label;
}
public interface KeyboardLayoutSelectedCallback {
/**
* Called when KeyboardLayout been selected.
*/
void onSelected(KeyboardLayout keyboardLayout);
}
}
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