514848cd6d
Because of some nested dependency breakage, we can no longer include Android libraries in main SDK lib, therefore we are moving all preference related code to a separate package that Settings/LineageParts will depend on. Change-Id: Iea379a580a08ea13f71e3503aa096ba0ed7e7cef
107 lines
3.5 KiB
Java
107 lines
3.5 KiB
Java
/*
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* Copyright (C) 2016 The CyanogenMod Project
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* Copyright (C) 2018 The LineageOS Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package lineageos.preference;
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import android.content.Context;
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import android.util.AttributeSet;
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import androidx.preference.DropDownPreference;
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import androidx.preference.PreferenceDataStore;
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import androidx.preference.PreferenceViewHolder;
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/**
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* A Preference which can automatically remove itself from the hierarchy
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* based on constraints set in XML.
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*/
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public abstract class SelfRemovingDropDownPreference extends DropDownPreference {
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private final ConstraintsHelper mConstraints;
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public SelfRemovingDropDownPreference(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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mConstraints = new ConstraintsHelper(context, attrs, this);
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setPreferenceDataStore(new DataStore());
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}
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public SelfRemovingDropDownPreference(Context context, AttributeSet attrs) {
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super(context, attrs);
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mConstraints = new ConstraintsHelper(context, attrs, this);
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setPreferenceDataStore(new DataStore());
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}
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public SelfRemovingDropDownPreference(Context context) {
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super(context);
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mConstraints = new ConstraintsHelper(context, null, this);
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setPreferenceDataStore(new DataStore());
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}
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@Override
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public void onAttached() {
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super.onAttached();
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mConstraints.onAttached();
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}
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@Override
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public void onBindViewHolder(PreferenceViewHolder holder) {
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super.onBindViewHolder(holder);
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mConstraints.onBindViewHolder(holder);
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}
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public void setAvailable(boolean available) {
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mConstraints.setAvailable(available);
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}
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public boolean isAvailable() {
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return mConstraints.isAvailable();
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}
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protected abstract boolean isPersisted();
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protected abstract void putString(String key, String value);
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protected abstract String getString(String key, String defaultValue);
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@Override
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protected void onSetInitialValue(boolean restorePersistedValue, Object defaultValue) {
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final String value;
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if (!restorePersistedValue || !isPersisted()) {
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if (defaultValue == null) {
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return;
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}
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value = (String) defaultValue;
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if (shouldPersist()) {
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persistString(value);
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}
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} else {
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// Note: the default is not used because to have got here
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// isPersisted() must be true.
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value = getString(getKey(), null /* not used */);
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}
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setValue(value);
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}
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private class DataStore extends PreferenceDataStore {
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@Override
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public void putString(String key, String value) {
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SelfRemovingDropDownPreference.this.putString(key, value);
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}
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@Override
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public String getString(String key, String defaultValue) {
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return SelfRemovingDropDownPreference.this.getString(key, defaultValue);
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}
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}
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}
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