96 lines
2.9 KiB
Java
96 lines
2.9 KiB
Java
package org.schabi.newpipe.fragments.detail;
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import android.view.ViewGroup;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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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.List;
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public class TabAdapter extends FragmentPagerAdapter {
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private final List<Fragment> mFragmentList = new ArrayList<>();
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private final List<String> mFragmentTitleList = new ArrayList<>();
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private final FragmentManager fragmentManager;
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public TabAdapter(final FragmentManager fm) {
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// if changed to BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT => crash if enqueueing stream in
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// the background and then clicking on it to open VideoDetailFragment:
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// "Cannot setMaxLifecycle for Fragment not attached to FragmentManager"
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super(fm, BEHAVIOR_SET_USER_VISIBLE_HINT);
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this.fragmentManager = fm;
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}
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@NonNull
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@Override
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public Fragment getItem(final int position) {
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return mFragmentList.get(position);
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}
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@Override
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public int getCount() {
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return mFragmentList.size();
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}
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public void addFragment(final Fragment fragment, final String title) {
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mFragmentList.add(fragment);
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mFragmentTitleList.add(title);
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}
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public void clearAllItems() {
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mFragmentList.clear();
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mFragmentTitleList.clear();
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}
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public void removeItem(final int position) {
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mFragmentList.remove(position == 0 ? 0 : position - 1);
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mFragmentTitleList.remove(position == 0 ? 0 : position - 1);
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}
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public void updateItem(final int position, final Fragment fragment) {
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mFragmentList.set(position, fragment);
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}
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public void updateItem(final String title, final Fragment fragment) {
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final int index = mFragmentTitleList.indexOf(title);
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if (index != -1) {
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updateItem(index, fragment);
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}
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}
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@Override
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public int getItemPosition(@NonNull final Object object) {
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if (mFragmentList.contains(object)) {
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return mFragmentList.indexOf(object);
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} else {
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return POSITION_NONE;
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}
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}
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public int getItemPositionByTitle(final String title) {
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return mFragmentTitleList.indexOf(title);
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}
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@Nullable
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public String getItemTitle(final int position) {
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if (position < 0 || position >= mFragmentTitleList.size()) {
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return null;
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}
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return mFragmentTitleList.get(position);
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}
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public void notifyDataSetUpdate() {
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notifyDataSetChanged();
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}
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@Override
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public void destroyItem(@NonNull final ViewGroup container,
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final int position,
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@NonNull final Object object) {
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fragmentManager.beginTransaction().remove((Fragment) object).commitNowAllowingStateLoss();
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}
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}
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