mirror of
https://github.com/Pinball3D/Rabbit-R1.git
synced 2024-12-27 01:22:33 -06:00
521 lines
19 KiB
Java
521 lines
19 KiB
Java
package androidx.recyclerview.widget;
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import androidx.recyclerview.widget.RecyclerView;
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import java.util.ArrayDeque;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.Iterator;
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import java.util.List;
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/* loaded from: classes2.dex */
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public class DiffUtil {
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private static final Comparator<Diagonal> DIAGONAL_COMPARATOR = new Comparator<Diagonal>() { // from class: androidx.recyclerview.widget.DiffUtil.1
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@Override // java.util.Comparator
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public int compare(Diagonal diagonal, Diagonal diagonal2) {
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return diagonal.x - diagonal2.x;
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}
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};
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/* loaded from: classes2.dex */
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public static abstract class Callback {
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public abstract boolean areContentsTheSame(int i, int i2);
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public abstract boolean areItemsTheSame(int i, int i2);
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public Object getChangePayload(int i, int i2) {
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return null;
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}
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public abstract int getNewListSize();
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public abstract int getOldListSize();
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}
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/* loaded from: classes2.dex */
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public static abstract class ItemCallback<T> {
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public abstract boolean areContentsTheSame(T t, T t2);
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public abstract boolean areItemsTheSame(T t, T t2);
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public Object getChangePayload(T t, T t2) {
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return null;
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}
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}
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private DiffUtil() {
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}
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public static DiffResult calculateDiff(Callback callback) {
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return calculateDiff(callback, true);
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}
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public static DiffResult calculateDiff(Callback callback, boolean z) {
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int oldListSize = callback.getOldListSize();
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int newListSize = callback.getNewListSize();
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ArrayList arrayList = new ArrayList();
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ArrayList arrayList2 = new ArrayList();
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arrayList2.add(new Range(0, oldListSize, 0, newListSize));
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int i = ((((oldListSize + newListSize) + 1) / 2) * 2) + 1;
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CenteredArray centeredArray = new CenteredArray(i);
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CenteredArray centeredArray2 = new CenteredArray(i);
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ArrayList arrayList3 = new ArrayList();
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while (!arrayList2.isEmpty()) {
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Range range = (Range) arrayList2.remove(arrayList2.size() - 1);
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Snake midPoint = midPoint(range, callback, centeredArray, centeredArray2);
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if (midPoint != null) {
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if (midPoint.diagonalSize() > 0) {
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arrayList.add(midPoint.toDiagonal());
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}
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Range range2 = arrayList3.isEmpty() ? new Range() : (Range) arrayList3.remove(arrayList3.size() - 1);
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range2.oldListStart = range.oldListStart;
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range2.newListStart = range.newListStart;
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range2.oldListEnd = midPoint.startX;
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range2.newListEnd = midPoint.startY;
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arrayList2.add(range2);
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range.oldListEnd = range.oldListEnd;
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range.newListEnd = range.newListEnd;
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range.oldListStart = midPoint.endX;
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range.newListStart = midPoint.endY;
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arrayList2.add(range);
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} else {
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arrayList3.add(range);
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}
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}
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Collections.sort(arrayList, DIAGONAL_COMPARATOR);
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return new DiffResult(callback, arrayList, centeredArray.backingData(), centeredArray2.backingData(), z);
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}
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private static Snake midPoint(Range range, Callback callback, CenteredArray centeredArray, CenteredArray centeredArray2) {
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if (range.oldSize() >= 1 && range.newSize() >= 1) {
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int oldSize = ((range.oldSize() + range.newSize()) + 1) / 2;
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centeredArray.set(1, range.oldListStart);
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centeredArray2.set(1, range.oldListEnd);
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for (int i = 0; i < oldSize; i++) {
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Snake forward = forward(range, callback, centeredArray, centeredArray2, i);
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if (forward != null) {
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return forward;
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}
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Snake backward = backward(range, callback, centeredArray, centeredArray2, i);
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if (backward != null) {
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return backward;
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}
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}
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}
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return null;
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}
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private static Snake forward(Range range, Callback callback, CenteredArray centeredArray, CenteredArray centeredArray2, int i) {
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int i2;
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int i3;
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int i4;
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boolean z = Math.abs(range.oldSize() - range.newSize()) % 2 == 1;
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int oldSize = range.oldSize() - range.newSize();
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int i5 = -i;
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for (int i6 = i5; i6 <= i; i6 += 2) {
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if (i6 == i5 || (i6 != i && centeredArray.get(i6 + 1) > centeredArray.get(i6 - 1))) {
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i2 = centeredArray.get(i6 + 1);
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i3 = i2;
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} else {
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i2 = centeredArray.get(i6 - 1);
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i3 = i2 + 1;
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}
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int i7 = (range.newListStart + (i3 - range.oldListStart)) - i6;
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int i8 = (i == 0 || i3 != i2) ? i7 : i7 - 1;
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while (i3 < range.oldListEnd && i7 < range.newListEnd && callback.areItemsTheSame(i3, i7)) {
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i3++;
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i7++;
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}
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centeredArray.set(i6, i3);
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if (z && (i4 = oldSize - i6) >= i5 + 1 && i4 <= i - 1 && centeredArray2.get(i4) <= i3) {
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Snake snake = new Snake();
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snake.startX = i2;
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snake.startY = i8;
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snake.endX = i3;
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snake.endY = i7;
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snake.reverse = false;
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return snake;
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}
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}
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return null;
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}
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private static Snake backward(Range range, Callback callback, CenteredArray centeredArray, CenteredArray centeredArray2, int i) {
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int i2;
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int i3;
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int i4;
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boolean z = (range.oldSize() - range.newSize()) % 2 == 0;
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int oldSize = range.oldSize() - range.newSize();
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int i5 = -i;
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for (int i6 = i5; i6 <= i; i6 += 2) {
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if (i6 == i5 || (i6 != i && centeredArray2.get(i6 + 1) < centeredArray2.get(i6 - 1))) {
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i2 = centeredArray2.get(i6 + 1);
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i3 = i2;
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} else {
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i2 = centeredArray2.get(i6 - 1);
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i3 = i2 - 1;
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}
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int i7 = range.newListEnd - ((range.oldListEnd - i3) - i6);
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int i8 = (i == 0 || i3 != i2) ? i7 : i7 + 1;
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while (i3 > range.oldListStart && i7 > range.newListStart && callback.areItemsTheSame(i3 - 1, i7 - 1)) {
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i3--;
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i7--;
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}
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centeredArray2.set(i6, i3);
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if (z && (i4 = oldSize - i6) >= i5 && i4 <= i && centeredArray.get(i4) >= i3) {
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Snake snake = new Snake();
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snake.startX = i3;
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snake.startY = i7;
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snake.endX = i2;
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snake.endY = i8;
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snake.reverse = true;
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return snake;
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}
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}
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return null;
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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/* loaded from: classes2.dex */
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public static class Diagonal {
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public final int size;
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public final int x;
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public final int y;
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int endX() {
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return this.x + this.size;
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}
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int endY() {
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return this.y + this.size;
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}
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Diagonal(int i, int i2, int i3) {
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this.x = i;
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this.y = i2;
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this.size = i3;
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}
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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/* loaded from: classes2.dex */
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public static class Snake {
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public int endX;
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public int endY;
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public boolean reverse;
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public int startX;
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public int startY;
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boolean hasAdditionOrRemoval() {
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return this.endY - this.startY != this.endX - this.startX;
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}
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boolean isAddition() {
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return this.endY - this.startY > this.endX - this.startX;
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}
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Snake() {
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}
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int diagonalSize() {
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return Math.min(this.endX - this.startX, this.endY - this.startY);
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}
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Diagonal toDiagonal() {
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if (!hasAdditionOrRemoval()) {
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int i = this.startX;
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return new Diagonal(i, this.startY, this.endX - i);
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}
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if (this.reverse) {
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return new Diagonal(this.startX, this.startY, diagonalSize());
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}
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if (isAddition()) {
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return new Diagonal(this.startX, this.startY + 1, diagonalSize());
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}
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return new Diagonal(this.startX + 1, this.startY, diagonalSize());
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}
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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/* loaded from: classes2.dex */
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public static class Range {
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int newListEnd;
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int newListStart;
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int oldListEnd;
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int oldListStart;
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int newSize() {
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return this.newListEnd - this.newListStart;
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}
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int oldSize() {
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return this.oldListEnd - this.oldListStart;
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}
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public Range() {
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}
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public Range(int i, int i2, int i3, int i4) {
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this.oldListStart = i;
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this.oldListEnd = i2;
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this.newListStart = i3;
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this.newListEnd = i4;
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}
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}
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/* loaded from: classes2.dex */
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public static class DiffResult {
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private static final int FLAG_CHANGED = 2;
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private static final int FLAG_MASK = 15;
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private static final int FLAG_MOVED = 12;
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private static final int FLAG_MOVED_CHANGED = 4;
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private static final int FLAG_MOVED_NOT_CHANGED = 8;
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private static final int FLAG_NOT_CHANGED = 1;
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private static final int FLAG_OFFSET = 4;
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public static final int NO_POSITION = -1;
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private final Callback mCallback;
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private final boolean mDetectMoves;
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private final List<Diagonal> mDiagonals;
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private final int[] mNewItemStatuses;
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private final int mNewListSize;
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private final int[] mOldItemStatuses;
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private final int mOldListSize;
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DiffResult(Callback callback, List<Diagonal> list, int[] iArr, int[] iArr2, boolean z) {
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this.mDiagonals = list;
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this.mOldItemStatuses = iArr;
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this.mNewItemStatuses = iArr2;
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Arrays.fill(iArr, 0);
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Arrays.fill(iArr2, 0);
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this.mCallback = callback;
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this.mOldListSize = callback.getOldListSize();
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this.mNewListSize = callback.getNewListSize();
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this.mDetectMoves = z;
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addEdgeDiagonals();
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findMatchingItems();
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}
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private void addEdgeDiagonals() {
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Diagonal diagonal = this.mDiagonals.isEmpty() ? null : this.mDiagonals.get(0);
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if (diagonal == null || diagonal.x != 0 || diagonal.y != 0) {
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this.mDiagonals.add(0, new Diagonal(0, 0, 0));
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}
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this.mDiagonals.add(new Diagonal(this.mOldListSize, this.mNewListSize, 0));
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}
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private void findMatchingItems() {
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for (Diagonal diagonal : this.mDiagonals) {
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for (int i = 0; i < diagonal.size; i++) {
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int i2 = diagonal.x + i;
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int i3 = diagonal.y + i;
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int i4 = this.mCallback.areContentsTheSame(i2, i3) ? 1 : 2;
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this.mOldItemStatuses[i2] = (i3 << 4) | i4;
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this.mNewItemStatuses[i3] = (i2 << 4) | i4;
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}
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}
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if (this.mDetectMoves) {
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findMoveMatches();
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}
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}
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private void findMoveMatches() {
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int i = 0;
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for (Diagonal diagonal : this.mDiagonals) {
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while (i < diagonal.x) {
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if (this.mOldItemStatuses[i] == 0) {
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findMatchingAddition(i);
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}
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i++;
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}
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i = diagonal.endX();
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}
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}
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private void findMatchingAddition(int i) {
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int size = this.mDiagonals.size();
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int i2 = 0;
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for (int i3 = 0; i3 < size; i3++) {
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Diagonal diagonal = this.mDiagonals.get(i3);
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while (i2 < diagonal.y) {
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if (this.mNewItemStatuses[i2] == 0 && this.mCallback.areItemsTheSame(i, i2)) {
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int i4 = this.mCallback.areContentsTheSame(i, i2) ? 8 : 4;
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this.mOldItemStatuses[i] = (i2 << 4) | i4;
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this.mNewItemStatuses[i2] = (i << 4) | i4;
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return;
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}
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i2++;
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}
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i2 = diagonal.endY();
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}
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}
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public int convertOldPositionToNew(int i) {
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if (i < 0 || i >= this.mOldListSize) {
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throw new IndexOutOfBoundsException("Index out of bounds - passed position = " + i + ", old list size = " + this.mOldListSize);
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}
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int i2 = this.mOldItemStatuses[i];
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if ((i2 & 15) == 0) {
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return -1;
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}
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return i2 >> 4;
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}
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public int convertNewPositionToOld(int i) {
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if (i < 0 || i >= this.mNewListSize) {
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throw new IndexOutOfBoundsException("Index out of bounds - passed position = " + i + ", new list size = " + this.mNewListSize);
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}
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int i2 = this.mNewItemStatuses[i];
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if ((i2 & 15) == 0) {
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return -1;
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}
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return i2 >> 4;
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}
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public void dispatchUpdatesTo(RecyclerView.Adapter adapter) {
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dispatchUpdatesTo(new AdapterListUpdateCallback(adapter));
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}
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public void dispatchUpdatesTo(ListUpdateCallback listUpdateCallback) {
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BatchingListUpdateCallback batchingListUpdateCallback;
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int i;
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if (listUpdateCallback instanceof BatchingListUpdateCallback) {
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batchingListUpdateCallback = (BatchingListUpdateCallback) listUpdateCallback;
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} else {
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batchingListUpdateCallback = new BatchingListUpdateCallback(listUpdateCallback);
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}
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int i2 = this.mOldListSize;
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ArrayDeque arrayDeque = new ArrayDeque();
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int i3 = this.mOldListSize;
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int i4 = this.mNewListSize;
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for (int size = this.mDiagonals.size() - 1; size >= 0; size--) {
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Diagonal diagonal = this.mDiagonals.get(size);
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int endX = diagonal.endX();
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int endY = diagonal.endY();
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while (true) {
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if (i3 <= endX) {
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break;
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}
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i3--;
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int i5 = this.mOldItemStatuses[i3];
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if ((i5 & 12) != 0) {
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int i6 = i5 >> 4;
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PostponedUpdate postponedUpdate = getPostponedUpdate(arrayDeque, i6, false);
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if (postponedUpdate != null) {
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int i7 = (i2 - postponedUpdate.currentPos) - 1;
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batchingListUpdateCallback.onMoved(i3, i7);
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if ((i5 & 4) != 0) {
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batchingListUpdateCallback.onChanged(i7, 1, this.mCallback.getChangePayload(i3, i6));
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}
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} else {
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arrayDeque.add(new PostponedUpdate(i3, (i2 - i3) - 1, true));
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}
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} else {
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batchingListUpdateCallback.onRemoved(i3, 1);
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i2--;
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}
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}
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while (i4 > endY) {
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i4--;
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int i8 = this.mNewItemStatuses[i4];
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if ((i8 & 12) != 0) {
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int i9 = i8 >> 4;
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PostponedUpdate postponedUpdate2 = getPostponedUpdate(arrayDeque, i9, true);
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if (postponedUpdate2 == null) {
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arrayDeque.add(new PostponedUpdate(i4, i2 - i3, false));
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} else {
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batchingListUpdateCallback.onMoved((i2 - postponedUpdate2.currentPos) - 1, i3);
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if ((i8 & 4) != 0) {
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batchingListUpdateCallback.onChanged(i3, 1, this.mCallback.getChangePayload(i9, i4));
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}
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}
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} else {
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batchingListUpdateCallback.onInserted(i3, 1);
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i2++;
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}
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}
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int i10 = diagonal.x;
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int i11 = diagonal.y;
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for (i = 0; i < diagonal.size; i++) {
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if ((this.mOldItemStatuses[i10] & 15) == 2) {
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batchingListUpdateCallback.onChanged(i10, 1, this.mCallback.getChangePayload(i10, i11));
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}
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i10++;
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i11++;
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}
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i3 = diagonal.x;
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i4 = diagonal.y;
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}
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batchingListUpdateCallback.dispatchLastEvent();
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}
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private static PostponedUpdate getPostponedUpdate(Collection<PostponedUpdate> collection, int i, boolean z) {
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PostponedUpdate postponedUpdate;
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Iterator<PostponedUpdate> it = collection.iterator();
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while (true) {
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if (!it.hasNext()) {
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postponedUpdate = null;
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break;
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}
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postponedUpdate = it.next();
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if (postponedUpdate.posInOwnerList == i && postponedUpdate.removal == z) {
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it.remove();
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break;
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}
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}
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while (it.hasNext()) {
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PostponedUpdate next = it.next();
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if (z) {
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next.currentPos--;
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} else {
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next.currentPos++;
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}
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}
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return postponedUpdate;
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}
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}
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/* JADX INFO: Access modifiers changed from: private */
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/* loaded from: classes2.dex */
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public static class PostponedUpdate {
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int currentPos;
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int posInOwnerList;
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boolean removal;
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PostponedUpdate(int i, int i2, boolean z) {
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this.posInOwnerList = i;
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this.currentPos = i2;
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this.removal = z;
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}
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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/* loaded from: classes2.dex */
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public static class CenteredArray {
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private final int[] mData;
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private final int mMid;
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int[] backingData() {
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return this.mData;
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}
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CenteredArray(int i) {
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int[] iArr = new int[i];
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this.mData = iArr;
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this.mMid = iArr.length / 2;
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}
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int get(int i) {
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return this.mData[i + this.mMid];
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}
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void set(int i, int i2) {
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this.mData[i + this.mMid] = i2;
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}
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public void fill(int i) {
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Arrays.fill(this.mData, i);
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}
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}
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}
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