Android/frameworks_base
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Merge "Refine ViewTreeObserverWrapper"

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This commit is contained in:
Tiger Huang
2021-01-06 06:55:26 +00:00
committed by Android (Google) Code Review
parent 335d657422 e5d2ca1fbd
commit f687e27379
1 changed files with 17 additions and 10 deletions
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27
packages/SystemUI/shared/src/com/android/systemui/shared/system/ViewTreeObserverWrapper.java
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@@ -16,6 +16,7 @@
package com.android.systemui.shared.system;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.graphics.Rect;
import android.graphics.Region;
@@ -26,18 +27,21 @@ import java.util.HashMap;
public class ViewTreeObserverWrapper {
private static final HashMap<OnComputeInsetsListener, ViewTreeObserver>
sListenerObserverMap = new HashMap<>();
private static final HashMap<OnComputeInsetsListener, OnComputeInternalInsetsListener>
sOnComputeInsetsListenerMap = new HashMap<>();
sListenerInternalListenerMap = new HashMap<>();
/**
* Register a callback to be invoked when the invoked when it is time to
* compute the window's insets.
* Register a callback to be invoked when the invoked when it is time to compute the window's
* insets.
*
* @param observer The observer to be added
* @param listener The callback to add
* @throws IllegalStateException If {@link ViewTreeObserver#isAlive()} returns false
*/
public static void addOnComputeInsetsListener(
ViewTreeObserver observer, OnComputeInsetsListener listener) {
@NonNull ViewTreeObserver observer, @NonNull OnComputeInsetsListener listener) {
final OnComputeInternalInsetsListener internalListener = internalInOutInfo -> {
final InsetsInfo inOutInfo = new InsetsInfo();
inOutInfo.contentInsets.set(internalInOutInfo.contentInsets);
@@ -49,23 +53,26 @@ public class ViewTreeObserverWrapper {
internalInOutInfo.touchableRegion.set(inOutInfo.touchableRegion);
internalInOutInfo.setTouchableInsets(inOutInfo.mTouchableInsets);
};
sOnComputeInsetsListenerMap.put(listener, internalListener);
sListenerObserverMap.put(listener, observer);
sListenerInternalListenerMap.put(listener, internalListener);
observer.addOnComputeInternalInsetsListener(internalListener);
}
/**
* Remove a previously installed insets computation callback
* Remove a previously installed insets computation callback.
*
* @param victim The callback to remove
* @throws IllegalStateException If {@link ViewTreeObserver#isAlive()} returns false
* @see #addOnComputeInsetsListener(ViewTreeObserver, OnComputeInsetsListener)
*/
public void removeOnComputeInsetsListener(
ViewTreeObserver observer, OnComputeInsetsListener victim) {
final OnComputeInternalInsetsListener listener = sOnComputeInsetsListenerMap.get(victim);
if (listener != null) {
public static void removeOnComputeInsetsListener(@NonNull OnComputeInsetsListener victim) {
final ViewTreeObserver observer = sListenerObserverMap.get(victim);
final OnComputeInternalInsetsListener listener = sListenerInternalListenerMap.get(victim);
if (observer != null && listener != null) {
observer.removeOnComputeInternalInsetsListener(listener);
}
sListenerObserverMap.remove(victim);
sListenerInternalListenerMap.remove(victim);
}
/**