101 lines
3.5 KiB
Java
101 lines
3.5 KiB
Java
package androidx.transition;
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import android.graphics.Matrix;
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import android.util.Log;
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import android.view.View;
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import android.view.ViewGroup;
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import androidx.annotation.NonNull;
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import androidx.annotation.RequiresApi;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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@RequiresApi(21)
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public class GhostViewPlatform implements GhostView {
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private static final String TAG = "GhostViewApi21";
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private static Method sAddGhostMethod;
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private static boolean sAddGhostMethodFetched;
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private static Class<?> sGhostViewClass;
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private static boolean sGhostViewClassFetched;
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private static Method sRemoveGhostMethod;
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private static boolean sRemoveGhostMethodFetched;
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private final View mGhostView;
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private GhostViewPlatform(@NonNull View view) {
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this.mGhostView = view;
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}
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public static GhostView addGhost(View view, ViewGroup viewGroup, Matrix matrix) {
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fetchAddGhostMethod();
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Method method = sAddGhostMethod;
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if (method != null) {
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try {
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return new GhostViewPlatform((View) method.invoke(null, view, viewGroup, matrix));
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} catch (IllegalAccessException unused) {
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} catch (InvocationTargetException e) {
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throw new RuntimeException(e.getCause());
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}
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}
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return null;
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}
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private static void fetchAddGhostMethod() {
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if (!sAddGhostMethodFetched) {
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try {
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fetchGhostViewClass();
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Method declaredMethod = sGhostViewClass.getDeclaredMethod("addGhost", View.class, ViewGroup.class, Matrix.class);
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sAddGhostMethod = declaredMethod;
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declaredMethod.setAccessible(true);
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} catch (NoSuchMethodException e) {
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Log.i("GhostViewApi21", "Failed to retrieve addGhost method", e);
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}
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sAddGhostMethodFetched = true;
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}
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}
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private static void fetchGhostViewClass() {
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if (!sGhostViewClassFetched) {
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try {
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sGhostViewClass = Class.forName("android.view.GhostView");
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} catch (ClassNotFoundException e) {
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Log.i("GhostViewApi21", "Failed to retrieve GhostView class", e);
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}
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sGhostViewClassFetched = true;
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}
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}
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private static void fetchRemoveGhostMethod() {
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if (!sRemoveGhostMethodFetched) {
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try {
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fetchGhostViewClass();
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Method declaredMethod = sGhostViewClass.getDeclaredMethod("removeGhost", View.class);
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sRemoveGhostMethod = declaredMethod;
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declaredMethod.setAccessible(true);
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} catch (NoSuchMethodException e) {
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Log.i("GhostViewApi21", "Failed to retrieve removeGhost method", e);
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}
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sRemoveGhostMethodFetched = true;
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}
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}
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public static void removeGhost(View view) {
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fetchRemoveGhostMethod();
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Method method = sRemoveGhostMethod;
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if (method != null) {
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try {
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method.invoke(null, view);
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} catch (IllegalAccessException unused) {
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} catch (InvocationTargetException e) {
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throw new RuntimeException(e.getCause());
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}
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}
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}
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@Override // androidx.transition.GhostView
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public void reserveEndViewTransition(ViewGroup viewGroup, View view) {
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}
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@Override // androidx.transition.GhostView
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public void setVisibility(int i) {
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this.mGhostView.setVisibility(i);
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}
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}
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