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package androidx.viewpager2.adapter;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Parcelable;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewParent;
import android.widget.FrameLayout;
import androidx.collection.ArraySet;
import androidx.collection.LongSparseArray;
import androidx.core.util.Preconditions;
import androidx.core.view.ViewCompat;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentActivity;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import androidx.lifecycle.Lifecycle;
import androidx.lifecycle.LifecycleEventObserver;
import androidx.lifecycle.LifecycleOwner;
import androidx.recyclerview.widget.RecyclerView;
import androidx.viewpager2.widget.ViewPager2;
public abstract class FragmentStateAdapter extends RecyclerView.Adapter<FragmentViewHolder> implements StatefulAdapter {
private static final long GRACE_WINDOW_TIME_MS = 10000;
private static final String KEY_PREFIX_FRAGMENT = "f#";
private static final String KEY_PREFIX_STATE = "s#";
final FragmentManager mFragmentManager;
private FragmentMaxLifecycleEnforcer mFragmentMaxLifecycleEnforcer;
final LongSparseArray<Fragment> mFragments;
private boolean mHasStaleFragments;
boolean mIsInGracePeriod;
private final LongSparseArray<Integer> mItemIdToViewHolder;
final Lifecycle mLifecycle;
private final LongSparseArray<Fragment.SavedState> mSavedStates;
public abstract Fragment createFragment(int i);
public long getItemId(int i) {
return (long) i;
}
public final boolean onFailedToRecycleView(FragmentViewHolder fragmentViewHolder) {
return true;
}
public FragmentStateAdapter(FragmentActivity fragmentActivity) {
this(fragmentActivity.getSupportFragmentManager(), fragmentActivity.getLifecycle());
}
public FragmentStateAdapter(Fragment fragment) {
this(fragment.getChildFragmentManager(), fragment.getLifecycle());
}
public FragmentStateAdapter(FragmentManager fragmentManager, Lifecycle lifecycle) {
this.mFragments = new LongSparseArray<>();
this.mSavedStates = new LongSparseArray<>();
this.mItemIdToViewHolder = new LongSparseArray<>();
this.mIsInGracePeriod = false;
this.mHasStaleFragments = false;
this.mFragmentManager = fragmentManager;
this.mLifecycle = lifecycle;
super.setHasStableIds(true);
}
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
Preconditions.checkArgument(this.mFragmentMaxLifecycleEnforcer == null);
FragmentMaxLifecycleEnforcer fragmentMaxLifecycleEnforcer = new FragmentMaxLifecycleEnforcer();
this.mFragmentMaxLifecycleEnforcer = fragmentMaxLifecycleEnforcer;
fragmentMaxLifecycleEnforcer.register(recyclerView);
}
public void onDetachedFromRecyclerView(RecyclerView recyclerView) {
this.mFragmentMaxLifecycleEnforcer.unregister(recyclerView);
this.mFragmentMaxLifecycleEnforcer = null;
}
public final FragmentViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
return FragmentViewHolder.create(viewGroup);
}
public final void onBindViewHolder(final FragmentViewHolder fragmentViewHolder, int i) {
long itemId = fragmentViewHolder.getItemId();
int id = fragmentViewHolder.getContainer().getId();
Long itemForViewHolder = itemForViewHolder(id);
if (!(itemForViewHolder == null || itemForViewHolder.longValue() == itemId)) {
removeFragment(itemForViewHolder.longValue());
this.mItemIdToViewHolder.remove(itemForViewHolder.longValue());
}
this.mItemIdToViewHolder.put(itemId, Integer.valueOf(id));
ensureFragment(i);
final FrameLayout container = fragmentViewHolder.getContainer();
if (ViewCompat.isAttachedToWindow(container)) {
if (container.getParent() == null) {
container.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
public void onLayoutChange(View view, int i, int i2, int i3, int i4, int i5, int i6, int i7, int i8) {
if (container.getParent() != null) {
container.removeOnLayoutChangeListener(this);
FragmentStateAdapter.this.placeFragmentInViewHolder(fragmentViewHolder);
}
}
});
} else {
throw new IllegalStateException("Design assumption violated.");
}
}
gcFragments();
}
/* access modifiers changed from: package-private */
public void gcFragments() {
if (this.mHasStaleFragments && !shouldDelayFragmentTransactions()) {
ArraySet<Long> arraySet = new ArraySet<>();
for (int i = 0; i < this.mFragments.size(); i++) {
long keyAt = this.mFragments.keyAt(i);
if (!containsItem(keyAt)) {
arraySet.add(Long.valueOf(keyAt));
this.mItemIdToViewHolder.remove(keyAt);
}
}
if (!this.mIsInGracePeriod) {
this.mHasStaleFragments = false;
for (int i2 = 0; i2 < this.mFragments.size(); i2++) {
long keyAt2 = this.mFragments.keyAt(i2);
if (!isFragmentViewBound(keyAt2)) {
arraySet.add(Long.valueOf(keyAt2));
}
}
}
for (Long longValue : arraySet) {
removeFragment(longValue.longValue());
}
}
}
private boolean isFragmentViewBound(long j) {
View view;
if (this.mItemIdToViewHolder.containsKey(j)) {
return true;
}
Fragment fragment = this.mFragments.get(j);
if (fragment == null || (view = fragment.getView()) == null || view.getParent() == null) {
return false;
}
return true;
}
private Long itemForViewHolder(int i) {
Long l = null;
for (int i2 = 0; i2 < this.mItemIdToViewHolder.size(); i2++) {
if (this.mItemIdToViewHolder.valueAt(i2).intValue() == i) {
if (l == null) {
l = Long.valueOf(this.mItemIdToViewHolder.keyAt(i2));
} else {
throw new IllegalStateException("Design assumption violated: a ViewHolder can only be bound to one item at a time.");
}
}
}
return l;
}
private void ensureFragment(int i) {
long itemId = getItemId(i);
if (!this.mFragments.containsKey(itemId)) {
Fragment createFragment = createFragment(i);
createFragment.setInitialSavedState(this.mSavedStates.get(itemId));
this.mFragments.put(itemId, createFragment);
}
}
public final void onViewAttachedToWindow(FragmentViewHolder fragmentViewHolder) {
placeFragmentInViewHolder(fragmentViewHolder);
gcFragments();
}
/* access modifiers changed from: package-private */
public void placeFragmentInViewHolder(final FragmentViewHolder fragmentViewHolder) {
Fragment fragment = this.mFragments.get(fragmentViewHolder.getItemId());
if (fragment != null) {
FrameLayout container = fragmentViewHolder.getContainer();
View view = fragment.getView();
if (!fragment.isAdded() && view != null) {
throw new IllegalStateException("Design assumption violated.");
} else if (fragment.isAdded() && view == null) {
scheduleViewAttach(fragment, container);
} else if (!fragment.isAdded() || view.getParent() == null) {
if (fragment.isAdded()) {
addViewToContainer(view, container);
} else if (!shouldDelayFragmentTransactions()) {
scheduleViewAttach(fragment, container);
FragmentTransaction beginTransaction = this.mFragmentManager.beginTransaction();
beginTransaction.add(fragment, "f" + fragmentViewHolder.getItemId()).setMaxLifecycle(fragment, Lifecycle.State.STARTED).commitNow();
this.mFragmentMaxLifecycleEnforcer.updateFragmentMaxLifecycle(false);
} else if (!this.mFragmentManager.isDestroyed()) {
this.mLifecycle.addObserver(new LifecycleEventObserver() {
public void onStateChanged(LifecycleOwner lifecycleOwner, Lifecycle.Event event) {
if (!FragmentStateAdapter.this.shouldDelayFragmentTransactions()) {
lifecycleOwner.getLifecycle().removeObserver(this);
if (ViewCompat.isAttachedToWindow(fragmentViewHolder.getContainer())) {
FragmentStateAdapter.this.placeFragmentInViewHolder(fragmentViewHolder);
}
}
}
});
}
} else if (view.getParent() != container) {
addViewToContainer(view, container);
}
} else {
throw new IllegalStateException("Design assumption violated.");
}
}
private void scheduleViewAttach(final Fragment fragment, final FrameLayout frameLayout) {
this.mFragmentManager.registerFragmentLifecycleCallbacks(new FragmentManager.FragmentLifecycleCallbacks() {
public void onFragmentViewCreated(FragmentManager fragmentManager, Fragment fragment, View view, Bundle bundle) {
if (fragment == fragment) {
fragmentManager.unregisterFragmentLifecycleCallbacks(this);
FragmentStateAdapter.this.addViewToContainer(view, frameLayout);
}
}
}, false);
}
/* access modifiers changed from: package-private */
public void addViewToContainer(View view, FrameLayout frameLayout) {
if (frameLayout.getChildCount() > 1) {
throw new IllegalStateException("Design assumption violated.");
} else if (view.getParent() != frameLayout) {
if (frameLayout.getChildCount() > 0) {
frameLayout.removeAllViews();
}
if (view.getParent() != null) {
((ViewGroup) view.getParent()).removeView(view);
}
frameLayout.addView(view);
}
}
public final void onViewRecycled(FragmentViewHolder fragmentViewHolder) {
Long itemForViewHolder = itemForViewHolder(fragmentViewHolder.getContainer().getId());
if (itemForViewHolder != null) {
removeFragment(itemForViewHolder.longValue());
this.mItemIdToViewHolder.remove(itemForViewHolder.longValue());
}
}
private void removeFragment(long j) {
ViewParent parent;
Fragment fragment = this.mFragments.get(j);
if (fragment != null) {
if (!(fragment.getView() == null || (parent = fragment.getView().getParent()) == null)) {
((FrameLayout) parent).removeAllViews();
}
if (!containsItem(j)) {
this.mSavedStates.remove(j);
}
if (!fragment.isAdded()) {
this.mFragments.remove(j);
} else if (shouldDelayFragmentTransactions()) {
this.mHasStaleFragments = true;
} else {
if (fragment.isAdded() && containsItem(j)) {
this.mSavedStates.put(j, this.mFragmentManager.saveFragmentInstanceState(fragment));
}
this.mFragmentManager.beginTransaction().remove(fragment).commitNow();
this.mFragments.remove(j);
}
}
}
/* access modifiers changed from: package-private */
public boolean shouldDelayFragmentTransactions() {
return this.mFragmentManager.isStateSaved();
}
public boolean containsItem(long j) {
return j >= 0 && j < ((long) getItemCount());
}
public final void setHasStableIds(boolean z) {
throw new UnsupportedOperationException("Stable Ids are required for the adapter to function properly, and the adapter takes care of setting the flag.");
}
public final Parcelable saveState() {
Bundle bundle = new Bundle(this.mFragments.size() + this.mSavedStates.size());
for (int i = 0; i < this.mFragments.size(); i++) {
long keyAt = this.mFragments.keyAt(i);
Fragment fragment = this.mFragments.get(keyAt);
if (fragment != null && fragment.isAdded()) {
this.mFragmentManager.putFragment(bundle, createKey(KEY_PREFIX_FRAGMENT, keyAt), fragment);
}
}
for (int i2 = 0; i2 < this.mSavedStates.size(); i2++) {
long keyAt2 = this.mSavedStates.keyAt(i2);
if (containsItem(keyAt2)) {
bundle.putParcelable(createKey(KEY_PREFIX_STATE, keyAt2), this.mSavedStates.get(keyAt2));
}
}
return bundle;
}
public final void restoreState(Parcelable parcelable) {
if (!this.mSavedStates.isEmpty() || !this.mFragments.isEmpty()) {
throw new IllegalStateException("Expected the adapter to be 'fresh' while restoring state.");
}
Bundle bundle = (Bundle) parcelable;
if (bundle.getClassLoader() == null) {
bundle.setClassLoader(getClass().getClassLoader());
}
for (String str : bundle.keySet()) {
if (isValidKey(str, KEY_PREFIX_FRAGMENT)) {
this.mFragments.put(parseIdFromKey(str, KEY_PREFIX_FRAGMENT), this.mFragmentManager.getFragment(bundle, str));
} else if (isValidKey(str, KEY_PREFIX_STATE)) {
long parseIdFromKey = parseIdFromKey(str, KEY_PREFIX_STATE);
Fragment.SavedState savedState = (Fragment.SavedState) bundle.getParcelable(str);
if (containsItem(parseIdFromKey)) {
this.mSavedStates.put(parseIdFromKey, savedState);
}
} else {
throw new IllegalArgumentException("Unexpected key in savedState: " + str);
}
}
if (!this.mFragments.isEmpty()) {
this.mHasStaleFragments = true;
this.mIsInGracePeriod = true;
gcFragments();
scheduleGracePeriodEnd();
}
}
private void scheduleGracePeriodEnd() {
final Handler handler = new Handler(Looper.getMainLooper());
final AnonymousClass4 r1 = new Runnable() {
public void run() {
FragmentStateAdapter.this.mIsInGracePeriod = false;
FragmentStateAdapter.this.gcFragments();
}
};
this.mLifecycle.addObserver(new LifecycleEventObserver() {
public void onStateChanged(LifecycleOwner lifecycleOwner, Lifecycle.Event event) {
if (event == Lifecycle.Event.ON_DESTROY) {
handler.removeCallbacks(r1);
lifecycleOwner.getLifecycle().removeObserver(this);
}
}
});
handler.postDelayed(r1, GRACE_WINDOW_TIME_MS);
}
private static String createKey(String str, long j) {
return str + j;
}
private static boolean isValidKey(String str, String str2) {
return str.startsWith(str2) && str.length() > str2.length();
}
private static long parseIdFromKey(String str, String str2) {
return Long.parseLong(str.substring(str2.length()));
}
class FragmentMaxLifecycleEnforcer {
private RecyclerView.AdapterDataObserver mDataObserver;
private LifecycleEventObserver mLifecycleObserver;
private ViewPager2.OnPageChangeCallback mPageChangeCallback;
private long mPrimaryItemId = -1;
private ViewPager2 mViewPager;
FragmentMaxLifecycleEnforcer() {
}
/* access modifiers changed from: package-private */
public void register(RecyclerView recyclerView) {
this.mViewPager = inferViewPager(recyclerView);
AnonymousClass1 r2 = new ViewPager2.OnPageChangeCallback() {
public void onPageScrollStateChanged(int i) {
FragmentMaxLifecycleEnforcer.this.updateFragmentMaxLifecycle(false);
}
public void onPageSelected(int i) {
FragmentMaxLifecycleEnforcer.this.updateFragmentMaxLifecycle(false);
}
};
this.mPageChangeCallback = r2;
this.mViewPager.registerOnPageChangeCallback(r2);
AnonymousClass2 r22 = new DataSetChangeObserver() {
public void onChanged() {
FragmentMaxLifecycleEnforcer.this.updateFragmentMaxLifecycle(true);
}
};
this.mDataObserver = r22;
FragmentStateAdapter.this.registerAdapterDataObserver(r22);
this.mLifecycleObserver = new LifecycleEventObserver() {
public void onStateChanged(LifecycleOwner lifecycleOwner, Lifecycle.Event event) {
FragmentMaxLifecycleEnforcer.this.updateFragmentMaxLifecycle(false);
}
};
FragmentStateAdapter.this.mLifecycle.addObserver(this.mLifecycleObserver);
}
/* access modifiers changed from: package-private */
public void unregister(RecyclerView recyclerView) {
inferViewPager(recyclerView).unregisterOnPageChangeCallback(this.mPageChangeCallback);
FragmentStateAdapter.this.unregisterAdapterDataObserver(this.mDataObserver);
FragmentStateAdapter.this.mLifecycle.removeObserver(this.mLifecycleObserver);
this.mViewPager = null;
}
/* access modifiers changed from: package-private */
public void updateFragmentMaxLifecycle(boolean z) {
int currentItem;
Fragment fragment;
if (!FragmentStateAdapter.this.shouldDelayFragmentTransactions() && this.mViewPager.getScrollState() == 0 && !FragmentStateAdapter.this.mFragments.isEmpty() && FragmentStateAdapter.this.getItemCount() != 0 && (currentItem = this.mViewPager.getCurrentItem()) < FragmentStateAdapter.this.getItemCount()) {
long itemId = FragmentStateAdapter.this.getItemId(currentItem);
if ((itemId != this.mPrimaryItemId || z) && (fragment = FragmentStateAdapter.this.mFragments.get(itemId)) != null && fragment.isAdded()) {
this.mPrimaryItemId = itemId;
FragmentTransaction beginTransaction = FragmentStateAdapter.this.mFragmentManager.beginTransaction();
Fragment fragment2 = null;
for (int i = 0; i < FragmentStateAdapter.this.mFragments.size(); i++) {
long keyAt = FragmentStateAdapter.this.mFragments.keyAt(i);
Fragment valueAt = FragmentStateAdapter.this.mFragments.valueAt(i);
if (valueAt.isAdded()) {
if (keyAt != this.mPrimaryItemId) {
beginTransaction.setMaxLifecycle(valueAt, Lifecycle.State.STARTED);
} else {
fragment2 = valueAt;
}
valueAt.setMenuVisibility(keyAt == this.mPrimaryItemId);
}
}
if (fragment2 != null) {
beginTransaction.setMaxLifecycle(fragment2, Lifecycle.State.RESUMED);
}
if (!beginTransaction.isEmpty()) {
beginTransaction.commitNow();
}
}
}
}
private ViewPager2 inferViewPager(RecyclerView recyclerView) {
ViewParent parent = recyclerView.getParent();
if (parent instanceof ViewPager2) {
return (ViewPager2) parent;
}
throw new IllegalStateException("Expected ViewPager2 instance. Got: " + parent);
}
}
private static abstract class DataSetChangeObserver extends RecyclerView.AdapterDataObserver {
public abstract void onChanged();
private DataSetChangeObserver() {
}
public final void onItemRangeChanged(int i, int i2) {
onChanged();
}
public final void onItemRangeChanged(int i, int i2, Object obj) {
onChanged();
}
public final void onItemRangeInserted(int i, int i2) {
onChanged();
}
public final void onItemRangeRemoved(int i, int i2) {
onChanged();
}
public final void onItemRangeMoved(int i, int i2, int i3) {
onChanged();
}
}
}
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