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/*
* Copyright (C) 2016 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.annotation.Nullable;
import android.app.Activity;
import android.hardware.input.InputDeviceIdentifier;
import android.hardware.input.InputManager;
import android.hardware.input.InputManager.InputDeviceListener;
import android.hardware.input.KeyboardLayout;
import android.os.Bundle;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceScreen;
import android.view.InputDevice;
import android.view.inputmethod.InputMethodInfo;
import android.view.inputmethod.InputMethodSubtype;
import com.android.internal.logging.MetricsLogger;
import com.android.internal.logging.MetricsProto.MetricsEvent;
import com.android.internal.util.Preconditions;
import com.android.settings.R;
import com.android.settings.SettingsPreferenceFragment;
import com.android.settings.inputmethod.PhysicalKeyboardFragment.KeyboardInfoPreference;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
public final class KeyboardLayoutPickerFragment2 extends SettingsPreferenceFragment
implements InputDeviceListener {
private InputDeviceIdentifier mInputDeviceIdentifier;
private int mInputDeviceId = -1;
private InputManager mIm;
private InputMethodInfo mImi;
@Nullable
private InputMethodSubtype mSubtype;
private KeyboardLayout[] mKeyboardLayouts;
private Map<Preference, KeyboardLayout> mPreferenceMap = new HashMap<>();
// TODO: Make these constants public API for b/25752827
/**
* Intent extra: The input device descriptor of the keyboard whose keyboard
* layout is to be changed.
*/
public static final String EXTRA_INPUT_DEVICE_IDENTIFIER = "input_device_identifier";
/**
* Intent extra: The associated {@link InputMethodInfo}.
*/
public static final String EXTRA_INPUT_METHOD_INFO = "input_method_info";
/**
* Intent extra: The associated {@link InputMethodSubtype}.
*/
public static final String EXTRA_INPUT_METHOD_SUBTYPE = "input_method_subtype";
@Override
protected int getMetricsCategory() {
return MetricsEvent.INPUTMETHOD_KEYBOARD;
}
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
Activity activity = Preconditions.checkNotNull(getActivity());
mInputDeviceIdentifier = activity.getIntent().getParcelableExtra(
EXTRA_INPUT_DEVICE_IDENTIFIER);
mImi = activity.getIntent().getParcelableExtra(EXTRA_INPUT_METHOD_INFO);
mSubtype = activity.getIntent().getParcelableExtra(EXTRA_INPUT_METHOD_SUBTYPE);
if (mInputDeviceIdentifier == null || mImi == null) {
activity.finish();
}
mIm = activity.getSystemService(InputManager.class);
mKeyboardLayouts = mIm.getKeyboardLayoutsForInputDevice(mInputDeviceIdentifier);
Arrays.sort(mKeyboardLayouts);
setPreferenceScreen(createPreferenceHierarchy());
}
@Override
public void onResume() {
super.onResume();
mIm.registerInputDeviceListener(this, null);
InputDevice inputDevice =
mIm.getInputDeviceByDescriptor(mInputDeviceIdentifier.getDescriptor());
if (inputDevice == null) {
getActivity().finish();
return;
}
mInputDeviceId = inputDevice.getId();
}
@Override
public void onPause() {
mIm.unregisterInputDeviceListener(this);
mInputDeviceId = -1;
super.onPause();
}
@Override
public boolean onPreferenceTreeClick(Preference preference) {
KeyboardLayout layout = mPreferenceMap.get(preference);
if (layout != null) {
mIm.setKeyboardLayoutForInputDevice(mInputDeviceIdentifier, mImi, mSubtype,
layout.getDescriptor());
getActivity().finish();
return true;
}
return super.onPreferenceTreeClick(preference);
}
@Override
public void onInputDeviceAdded(int deviceId) {}
@Override
public void onInputDeviceChanged(int deviceId) {}
@Override
public void onInputDeviceRemoved(int deviceId) {
if (mInputDeviceId >= 0 && deviceId == mInputDeviceId) {
getActivity().finish();
}
}
private PreferenceScreen createPreferenceHierarchy() {
PreferenceScreen root = getPreferenceManager().createPreferenceScreen(getActivity());
for (KeyboardLayout layout : mKeyboardLayouts) {
Preference pref = new Preference(getPrefContext());
pref.setTitle(layout.getLabel());
pref.setSummary(layout.getCollection());
root.addPreference(pref);
mPreferenceMap.put(pref, layout);
}
root.setTitle(KeyboardInfoPreference.getDisplayName(getContext(), mImi, mSubtype));
return root;
}
}