litho-widget/com.facebook.litho.widget/LayoutInfo

LayoutInfo

interface LayoutInfo : ViewportInfo

An implementation of this interface will provide the RecyclerBinder with all the information about the RecyclerView layout.

Inheritors

Types

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interface ViewportFiller
Interface that is responsible for filling the viewport of the list with initial layouts according to the LayoutManager.

Functions

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abstract fun approximateRangeSize(firstMeasuredItemWidth: Int, firstMeasuredItemHeight: Int, recyclerMeasuredWidth: Int, recyclerMeasuredHeight: Int): Int
This is called when the RecyclerBinder needs to calculate a range size.
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abstract fun computeWrappedHeight(maxHeight: Int, componentTreeHolders: List<ComponentTreeHolder>): Int
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abstract fun createViewportFiller(measuredWidth: Int, measuredHeight: Int): LayoutInfo.ViewportFiller
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abstract fun getChildHeightSpec(heightSpec: Int, renderInfo: RenderInfo): Int
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abstract fun getChildWidthSpec(widthSpec: Int, renderInfo: RenderInfo): Int
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abstract fun getItemCount(): Int
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abstract fun getScrollDirection(): Int
This is the main scrolling direction that the LayoutManager passed to this binder will use.
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abstract fun scrollToPositionWithOffset(position: Int, offset: Int)
RecyclerBinder delegates scrolling responsibilities to the LayoutInfo, as the varied LayoutManagers wrapped by a LayoutInfo lack a common scrolling interface.
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abstract fun setRenderInfoCollection(renderInfoCollection: LayoutInfo.RenderInfoCollection)