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Support removeClippedSubviews for horizontal ScrollViews
Summary: Currently, horizontal `ScrollViews` don't properly support `removeClippedSubviews`. This is because the container view, `ReactHorizontalScrollContainerView` extends from regular `ViewGroup` instead of `ReactViewGroup` so doesn't have all the logic around clipping children. Moreover, the `ReactHorizontalScrollContainerViewManager` doesn't actually support the `removeClippedSubviews` prop This change: - Makes `ReactHorizontalScrollContainerView` extend from `ReactViewGroup` while maintaining the special logic around RTL scrolling - Factors out a common `ReactClippingViewManager` which will be used to bridge all components which extend `ReactViewGroup` and support clipping. It has the logic for adding/removing children and getting child counts while considering clipped subviews - `ReactViewManager` now extends this new `ReactClippingViewManager` - `ReactHorizontalScrollContainerViewManager` also extends `ReactClippingViewManager` Reviewed By: JoshuaGross Differential Revision: D17708630 fbshipit-source-id: d257566ee54ad46f6d62f176a657c596bba96aa4
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78 changes: 78 additions & 0 deletions
78
ReactAndroid/src/main/java/com/facebook/react/views/view/ReactClippingViewManager.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| // Copyright (c) Facebook, Inc. and its affiliates. | ||
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| // This source code is licensed under the MIT license found in the | ||
| // LICENSE file in the root directory of this source tree. | ||
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| package com.facebook.react.views.view; | ||
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| import android.view.View; | ||
| import com.facebook.react.uimanager.ViewGroupManager; | ||
| import com.facebook.react.uimanager.annotations.ReactProp; | ||
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| /** | ||
| * View manager which handles clipped subviews. Useful for custom views which extends from {@link | ||
| * com.facebook.react.views.view.ReactViewGroup} | ||
| */ | ||
| public abstract class ReactClippingViewManager<T extends ReactViewGroup> | ||
| extends ViewGroupManager<T> { | ||
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| @ReactProp( | ||
| name = com.facebook.react.uimanager.ReactClippingViewGroupHelper.PROP_REMOVE_CLIPPED_SUBVIEWS) | ||
| public void setRemoveClippedSubviews(T view, boolean removeClippedSubviews) { | ||
| view.setRemoveClippedSubviews(removeClippedSubviews); | ||
| } | ||
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| @Override | ||
| public void addView(T parent, View child, int index) { | ||
| boolean removeClippedSubviews = parent.getRemoveClippedSubviews(); | ||
| if (removeClippedSubviews) { | ||
| parent.addViewWithSubviewClippingEnabled(child, index); | ||
| } else { | ||
| parent.addView(child, index); | ||
| } | ||
| } | ||
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| @Override | ||
| public int getChildCount(T parent) { | ||
| boolean removeClippedSubviews = parent.getRemoveClippedSubviews(); | ||
| if (removeClippedSubviews) { | ||
| return parent.getAllChildrenCount(); | ||
| } else { | ||
| return parent.getChildCount(); | ||
| } | ||
| } | ||
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| @Override | ||
| public View getChildAt(T parent, int index) { | ||
| boolean removeClippedSubviews = parent.getRemoveClippedSubviews(); | ||
| if (removeClippedSubviews) { | ||
| return parent.getChildAtWithSubviewClippingEnabled(index); | ||
| } else { | ||
| return parent.getChildAt(index); | ||
| } | ||
| } | ||
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| @Override | ||
| public void removeViewAt(T parent, int index) { | ||
| boolean removeClippedSubviews = parent.getRemoveClippedSubviews(); | ||
| if (removeClippedSubviews) { | ||
| View child = getChildAt(parent, index); | ||
| if (child.getParent() != null) { | ||
| parent.removeView(child); | ||
| } | ||
| parent.removeViewWithSubviewClippingEnabled(child); | ||
| } else { | ||
| parent.removeViewAt(index); | ||
| } | ||
| } | ||
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| @Override | ||
| public void removeAllViews(T parent) { | ||
| boolean removeClippedSubviews = parent.getRemoveClippedSubviews(); | ||
| if (removeClippedSubviews) { | ||
| parent.removeAllViewsWithSubviewClippingEnabled(); | ||
| } else { | ||
| parent.removeAllViews(); | ||
| } | ||
| } | ||
| } |
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