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/*
* Copyright (C) 2018 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.uioverrides.flags;
import static com.android.launcher3.config.FeatureFlags.FlagState.TEAMFOOD;
import static com.android.launcher3.uioverrides.flags.FlagsFactory.TEAMFOOD_FLAG;
import android.app.Activity;
import android.content.Context;
import android.os.Handler;
import android.os.Process;
import android.text.Html;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
import androidx.preference.PreferenceDataStore;
import androidx.preference.PreferenceGroup;
import androidx.preference.PreferenceViewHolder;
import androidx.preference.SwitchPreference;
import com.android.launcher3.config.FeatureFlags;
import com.android.launcher3.util.ActivityLifecycleCallbacksAdapter;
import java.util.List;
import java.util.Set;
/**
* Dev-build only UI allowing developers to toggle flag settings. See {@link FeatureFlags}.
*/
public final class FlagTogglerPrefUi implements ActivityLifecycleCallbacksAdapter {
private static final String TAG = "FlagTogglerPrefFrag";
private final View mFlagsApplyButton;
private final Context mContext;
private final PreferenceDataStore mDataStore = new PreferenceDataStore() {
@Override
public void putBoolean(String key, boolean value) {
FlagsFactory.getSharedPreferences().edit().putBoolean(key, value).apply();
updateMenu();
}
@Override
public boolean getBoolean(String key, boolean defaultValue) {
return FlagsFactory.getSharedPreferences().getBoolean(key, defaultValue);
}
};
public FlagTogglerPrefUi(Activity activity, View flagsApplyButton) {
mFlagsApplyButton = flagsApplyButton;
mContext = mFlagsApplyButton.getContext();
activity.registerActivityLifecycleCallbacks(this);
mFlagsApplyButton.setOnClickListener(v -> {
FlagsFactory.getSharedPreferences().edit().commit();
Log.e(TAG,
"Killing launcher process " + Process.myPid() + " to apply new flag values");
System.exit(0);
});
}
public void applyTo(PreferenceGroup parent) {
Set<String> modifiedPrefs = FlagsFactory.getSharedPreferences().getAll().keySet();
List<DebugFlag> flags = FlagsFactory.getDebugFlags();
flags.sort((f1, f2) -> {
// Sort first by any prefs that the user has changed, then alphabetically.
int changeComparison = Boolean.compare(
modifiedPrefs.contains(f2.key), modifiedPrefs.contains(f1.key));
return changeComparison != 0
? changeComparison
: f1.key.compareToIgnoreCase(f2.key);
});
// Ensure that teamfood flag comes on the top
if (flags.remove(TEAMFOOD_FLAG)) {
flags.add(0, (DebugFlag) TEAMFOOD_FLAG);
}
// For flag overrides we only want to store when the engineer chose to override the
// flag with a different value than the default. That way, when we flip flags in
// future, engineers will pick up the new value immediately. To accomplish this, we use a
// custom preference data store.
for (DebugFlag flag : flags) {
SwitchPreference switchPreference = new SwitchPreference(mContext) {
@Override
public void onBindViewHolder(PreferenceViewHolder holder) {
super.onBindViewHolder(holder);
holder.itemView.setOnLongClickListener(v -> {
FlagsFactory.getSharedPreferences().edit().remove(flag.key).apply();
setChecked(getFlagStateFromSharedPrefs(flag));
updateSummary(this, flag);
updateMenu();
return true;
});
}
};
switchPreference.setKey(flag.key);
switchPreference.setDefaultValue(FlagsFactory.getEnabledValue(flag.defaultValue));
switchPreference.setChecked(getFlagStateFromSharedPrefs(flag));
switchPreference.setTitle(flag.key);
updateSummary(switchPreference, flag);
switchPreference.setPreferenceDataStore(mDataStore);
switchPreference.setOnPreferenceChangeListener((p, v) -> {
new Handler().post(() -> updateSummary(switchPreference, flag));
return true;
});
parent.addPreference(switchPreference);
}
updateMenu();
}
/**
* Updates the summary to show the description and whether the flag overrides the default value.
*/
private void updateSummary(SwitchPreference switchPreference, DebugFlag flag) {
String summary = flag.defaultValue == TEAMFOOD
? "<font color='blue'><b>[TEAMFOOD]</b> </font>" : "";
if (FlagsFactory.getSharedPreferences().contains(flag.key)) {
summary += "<font color='red'><b>[OVERRIDDEN]</b> </font>";
}
if (!TextUtils.isEmpty(summary)) {
summary += "<br>";
}
switchPreference.setSummary(Html.fromHtml(summary + flag.description));
}
private void updateMenu() {
mFlagsApplyButton.setVisibility(anyChanged() ? View.VISIBLE : View.INVISIBLE);
}
@Override
public void onActivityStopped(Activity activity) {
if (anyChanged()) {
Toast.makeText(mContext, "Flag won't be applied until you restart launcher",
Toast.LENGTH_LONG).show();
}
}
private boolean getFlagStateFromSharedPrefs(DebugFlag flag) {
boolean defaultValue = FlagsFactory.getEnabledValue(flag.defaultValue);
return mDataStore.getBoolean(flag.key, defaultValue);
}
private boolean anyChanged() {
for (DebugFlag flag : FlagsFactory.getDebugFlags()) {
if (getFlagStateFromSharedPrefs(flag) != flag.get()) {
return true;
}
}
return false;
}
}
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