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RecyclerViewBackedScrollViewManager.java
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RecyclerViewBackedScrollViewManager.java
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// Copyright 2004-present Facebook. All Rights Reserved.
package com.facebook.react.views.recyclerview;
import javax.annotation.Nullable;
import java.util.Map;
import android.view.View;
import com.facebook.react.bridge.ReadableArray;
import com.facebook.react.common.MapBuilder;
import com.facebook.react.uimanager.annotations.ReactProp;
import com.facebook.react.uimanager.ThemedReactContext;
import com.facebook.react.uimanager.ViewGroupManager;
import com.facebook.react.views.scroll.ReactScrollViewCommandHelper;
import com.facebook.react.views.scroll.ScrollEventType;
/**
* View manager for {@link RecyclerViewBackedScrollView}.
*/
public class RecyclerViewBackedScrollViewManager extends
ViewGroupManager<RecyclerViewBackedScrollView>
implements ReactScrollViewCommandHelper.ScrollCommandHandler<RecyclerViewBackedScrollView> {
private static final String REACT_CLASS = "AndroidRecyclerViewBackedScrollView";
@Override
public String getName() {
return REACT_CLASS;
}
// TODO(8624925): Implement removeClippedSubviews support for native ListView
@ReactProp(name = "onContentSizeChange")
public void setOnContentSizeChange(RecyclerViewBackedScrollView view, boolean value) {
view.setSendContentSizeChangeEvents(value);
}
@Override
protected RecyclerViewBackedScrollView createViewInstance(ThemedReactContext reactContext) {
return new RecyclerViewBackedScrollView(reactContext);
}
@Override
public void addView(RecyclerViewBackedScrollView parent, View child, int index) {
parent.addViewToAdapter(child, index);
}
@Override
public int getChildCount(RecyclerViewBackedScrollView parent) {
return parent.getChildCountFromAdapter();
}
@Override
public View getChildAt(RecyclerViewBackedScrollView parent, int index) {
return parent.getChildAtFromAdapter(index);
}
@Override
public void removeViewAt(RecyclerViewBackedScrollView parent, int index) {
parent.removeViewFromAdapter(index);
}
/**
* Provides implementation of commands supported by {@link ReactScrollViewManager}
*/
@Override
public void receiveCommand(
RecyclerViewBackedScrollView view,
int commandId,
@Nullable ReadableArray args) {
ReactScrollViewCommandHelper.receiveCommand(this, view, commandId, args);
}
@Override
public void scrollTo(
RecyclerViewBackedScrollView scrollView,
ReactScrollViewCommandHelper.ScrollToCommandData data) {
scrollView.scrollTo(data.mDestX, data.mDestY, data.mAnimated);
}
@Override
public @Nullable
Map getExportedCustomDirectEventTypeConstants() {
return MapBuilder.builder()
.put(ScrollEventType.SCROLL.getJSEventName(), MapBuilder.of("registrationName", "onScroll"))
.build();
}
}