70 lines
1.7 KiB
Java
70 lines
1.7 KiB
Java
package androidx.lifecycle;
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import androidx.annotation.MainThread;
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import androidx.annotation.Nullable;
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import java.io.Closeable;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Map;
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public abstract class ViewModel {
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@Nullable
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private final Map<String, Object> mBagOfTags = new HashMap();
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private volatile boolean mCleared = false;
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private static void closeWithRuntimeException(Object obj) {
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if (obj instanceof Closeable) {
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try {
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((Closeable) obj).close();
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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}
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@MainThread
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public final void clear() {
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this.mCleared = true;
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Map<String, Object> map = this.mBagOfTags;
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if (map != null) {
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synchronized (map) {
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for (Object obj : this.mBagOfTags.values()) {
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closeWithRuntimeException(obj);
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}
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}
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}
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onCleared();
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}
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public <T> T getTag(String str) {
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T t;
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Map<String, Object> map = this.mBagOfTags;
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if (map == null) {
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return null;
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}
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synchronized (map) {
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t = (T) this.mBagOfTags.get(str);
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}
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return t;
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}
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public void onCleared() {
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}
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public <T> T setTagIfAbsent(String str, T t) {
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Object obj;
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synchronized (this.mBagOfTags) {
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obj = this.mBagOfTags.get(str);
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if (obj == null) {
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this.mBagOfTags.put(str, t);
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}
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}
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if (obj != null) {
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t = obj;
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}
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if (this.mCleared) {
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closeWithRuntimeException(t);
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}
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return t;
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}
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}
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