125 lines
4.1 KiB
Java
125 lines
4.1 KiB
Java
/*
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* Copyright 2015 Synced Synapse. All rights reserved.
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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 org.xbmc.kore.utils;
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import android.content.Context;
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import android.os.Bundle;
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import android.view.ViewGroup;
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import androidx.fragment.app.Fragment;
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import androidx.fragment.app.FragmentManager;
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import androidx.fragment.app.FragmentPagerAdapter;
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import java.util.ArrayList;
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import java.util.HashMap;
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/**
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* This is a helper class that implements the management of tabs and all
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* details of connecting a ViewPager with associated TabHost.
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*/
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public class TabsAdapter extends FragmentPagerAdapter {
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private final Context context;
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private final ArrayList<TabInfo> tabInfos;
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public static final class TabInfo {
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private final Class<?> fragmentClass;
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private final Bundle args;
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private final int titleRes;
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private final long fragmentId;
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private final String titleString;
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TabInfo(Class<?> fragmentClass, Bundle args, int titleRes, long fragmentId) {
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this.fragmentClass = fragmentClass;
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this.args = args;
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this.titleRes = titleRes;
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this.fragmentId = fragmentId;
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this.titleString = null;
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}
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TabInfo(Class<?> fragmentClass, Bundle args, String titleString, long fragmentId) {
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this.fragmentClass = fragmentClass;
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this.args = args;
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this.titleRes = 0;
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this.fragmentId = fragmentId;
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this.titleString = titleString;
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}
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}
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public TabsAdapter(Context context, FragmentManager fragmentManager) {
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super(fragmentManager);
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this.context = context;
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this.tabInfos = new ArrayList<TabInfo>();
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}
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public TabsAdapter addTab(Class<?> fragmentClass, Bundle args, int titleRes, long fragmentId) {
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TabInfo info = new TabInfo(fragmentClass, args, titleRes, fragmentId);
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tabInfos.add(info);
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return this;
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}
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public TabsAdapter addTab(Class<?> fragmentClass, Bundle args, String titleString, long fragmentId) {
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TabInfo info = new TabInfo(fragmentClass, args, titleString, fragmentId);
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tabInfos.add(info);
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return this;
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}
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@Override
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public int getCount() {
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return tabInfos.size();
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}
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@Override
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public Fragment getItem(int position) {
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TabInfo info = tabInfos.get(position);
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return Fragment.instantiate(context, info.fragmentClass.getName(), info.args);
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}
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/**
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* Store the created fragments, so that it is possible to get them by position later
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*/
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private HashMap<Integer, Fragment> createdFragments = new HashMap<>(5);
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@Override
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public Object instantiateItem(ViewGroup container, int position) {
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Fragment fragment = (Fragment)super.instantiateItem(container, position);
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createdFragments.put(position, fragment);
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return fragment;
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}
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@Override
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public void destroyItem (ViewGroup container, int position, Object object) {
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super.destroyItem(container, position, object);
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createdFragments.remove(position);
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}
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public Fragment getStoredFragment(int position) {
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return createdFragments.get(position);
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}
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@Override
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public long getItemId(int position) {
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return tabInfos.get(position).fragmentId;
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}
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@Override
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public CharSequence getPageTitle(int position) {
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TabInfo tabInfo = tabInfos.get(position);
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if (tabInfo != null) {
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// return context.getString(tabInfo.titleRes).toUpperCase(Locale.getDefault());
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return tabInfo.titleString == null? context.getString(tabInfo.titleRes) : tabInfo.titleString;
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}
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return null;
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}
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}
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