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/*
* Copyright (C) 2017 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.tv.settings.inputmethod;
import android.annotation.DrawableRes;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.app.Activity;
import android.app.admin.DevicePolicyManager;
import android.app.tvsettings.TvSettingsEnums;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.ServiceInfo;
import android.content.res.Configuration;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.UserHandle;
import android.view.inputmethod.InputMethodInfo;
import android.view.inputmethod.InputMethodManager;
import androidx.annotation.Keep;
import androidx.preference.PreferenceScreen;
import com.android.settingslib.inputmethod.InputMethodAndSubtypeUtilCompat;
import com.android.settingslib.inputmethod.InputMethodPreference;
import com.android.settingslib.inputmethod.InputMethodSettingValuesWrapper;
import com.android.tv.settings.R;
import com.android.tv.settings.SettingsPreferenceFragment;
import java.text.Collator;
import java.util.ArrayList;
import java.util.List;
/**
* Fragment for enabling/disabling virtual keyboard IMEs
*/
@Keep
public final class AvailableVirtualKeyboardFragment extends SettingsPreferenceFragment
implements InputMethodPreference.OnSavePreferenceListener {
private final ArrayList<TVInputMethodPreference> mInputMethodPreferenceList = new ArrayList<>();
private InputMethodSettingValuesWrapper mInputMethodSettingValues;
private InputMethodManager mImm;
private DevicePolicyManager mDpm;
@Override
public void onCreatePreferences(Bundle bundle, String s) {
Activity activity = getActivity();
PreferenceScreen screen = getPreferenceManager().createPreferenceScreen(activity);
screen.setTitle(activity.getString(R.string.available_virtual_keyboard_category));
setPreferenceScreen(screen);
mInputMethodSettingValues = InputMethodSettingValuesWrapper.getInstance(activity);
mImm = activity.getSystemService(InputMethodManager.class);
mDpm = activity.getSystemService(DevicePolicyManager.class);
}
@Override
public void onResume() {
super.onResume();
// Refresh internal states in mInputMethodSettingValues to keep the latest
// "InputMethodInfo"s and "InputMethodSubtype"s
mInputMethodSettingValues.refreshAllInputMethodAndSubtypes();
updateInputMethodPreferenceViews();
}
@Override
public void onSaveInputMethodPreference(final InputMethodPreference pref) {
final boolean hasHardwareKeyboard = getResources().getConfiguration().keyboard
== Configuration.KEYBOARD_QWERTY;
InputMethodAndSubtypeUtilCompat.saveInputMethodSubtypeList(this,
getContext().getContentResolver(), mImm.getInputMethodList(), hasHardwareKeyboard);
// Update input method settings and preference list.
mInputMethodSettingValues.refreshAllInputMethodAndSubtypes();
for (final InputMethodPreference p : mInputMethodPreferenceList) {
p.updatePreferenceViews();
}
}
@Nullable
private static Drawable loadDrawable(@NonNull final PackageManager packageManager,
@NonNull final String packageName, @DrawableRes final int resId,
@NonNull final ApplicationInfo applicationInfo) {
if (resId == 0) {
return null;
}
try {
return packageManager.getDrawable(packageName, resId, applicationInfo);
} catch (Exception e) {
return null;
}
}
@NonNull
private static Drawable getInputMethodIcon(@NonNull final PackageManager packageManager,
@NonNull final InputMethodInfo imi) {
final ServiceInfo si = imi.getServiceInfo();
final ApplicationInfo ai = si != null ? si.applicationInfo : null;
final String packageName = imi.getPackageName();
if (si == null || ai == null || packageName == null) {
return new ColorDrawable(Color.TRANSPARENT);
}
// We do not use ServiceInfo#loadLogo() and ServiceInfo#loadIcon here since those methods
// internally have some fallback rules, which we want to do manually.
Drawable drawable = loadDrawable(packageManager, packageName, si.logo, ai);
if (drawable != null) {
return drawable;
}
drawable = loadDrawable(packageManager, packageName, si.icon, ai);
if (drawable != null) {
return drawable;
}
// We do not use ApplicationInfo#loadLogo() and ApplicationInfo#loadIcon here since those
// methods internally have some fallback rules, which we want to do manually.
drawable = loadDrawable(packageManager, packageName, ai.logo, ai);
if (drawable != null) {
return drawable;
}
drawable = loadDrawable(packageManager, packageName, ai.icon, ai);
if (drawable != null) {
return drawable;
}
return new ColorDrawable(Color.TRANSPARENT);
}
private void updateInputMethodPreferenceViews() {
mInputMethodSettingValues.refreshAllInputMethodAndSubtypes();
// Clear existing "TVInputMethodPreference"s
mInputMethodPreferenceList.clear();
List<String> permittedList = mDpm.getPermittedInputMethodsForCurrentUser();
final Context context = getPreferenceManager().getContext();
final PackageManager packageManager = getActivity().getPackageManager();
final List<InputMethodInfo> imis = mInputMethodSettingValues.getInputMethodList();
final int numImis = (imis == null ? 0 : imis.size());
for (int i = 0; i < numImis; ++i) {
final InputMethodInfo imi = imis.get(i);
final boolean isAllowedByOrganization = permittedList == null
|| permittedList.contains(imi.getPackageName());
final TVInputMethodPreference pref = new TVInputMethodPreference(
context, imi, isAllowedByOrganization, this, UserHandle.myUserId());
// TODO: Update the icon container in leanback_preference.xml to use LinearLayout.
// This is a workaround to avoid the crash. b/146654624
pref.setIconSize(0);
pref.setIcon(getInputMethodIcon(packageManager, imi));
mInputMethodPreferenceList.add(pref);
}
final Collator collator = Collator.getInstance();
mInputMethodPreferenceList.sort((lhs, rhs) -> lhs.compareTo(rhs, collator));
getPreferenceScreen().removeAll();
for (int i = 0; i < numImis; ++i) {
final TVInputMethodPreference pref = mInputMethodPreferenceList.get(i);
pref.setOrder(i);
getPreferenceScreen().addPreference(pref);
InputMethodAndSubtypeUtilCompat.removeUnnecessaryNonPersistentPreference(pref);
pref.updatePreferenceViews();
}
}
@Override
protected int getPageId() {
return TvSettingsEnums.SYSTEM_KEYBOARD_MANAGE_KEYBOARDS;
}
}
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