mirror of https://codeberg.org/gitnex/GitNex.git
78 lines
1.9 KiB
Java
78 lines
1.9 KiB
Java
package org.mian.gitnex.helpers;
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import android.content.Context;
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import android.util.AttributeSet;
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import android.view.View;
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import androidx.recyclerview.widget.RecyclerView;
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/**
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* Author com.github.abumoallim, modified by M M Arif
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*/
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public class RecyclerViewEmptySupport extends RecyclerView {
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private View emptyView;
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final private AdapterDataObserver observer = new AdapterDataObserver() {
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@Override
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public void onChanged() {
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checkIfEmpty();
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}
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@Override
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public void onItemRangeInserted(int positionStart, int itemCount) {
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checkIfEmpty();
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}
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@Override
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public void onItemRangeRemoved(int positionStart, int itemCount) {
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checkIfEmpty();
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}
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};
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public RecyclerViewEmptySupport(Context context) {
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super(context);
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}
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public RecyclerViewEmptySupport(Context context, AttributeSet attrs) {
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super(context, attrs);
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}
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public RecyclerViewEmptySupport(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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}
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void checkIfEmpty() {
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if (emptyView != null && getAdapter() != null) {
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final boolean emptyViewVisible = getAdapter().getItemCount() == 0;
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emptyView.setVisibility(emptyViewVisible ? VISIBLE : GONE);
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setVisibility(emptyViewVisible ? GONE : VISIBLE);
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}
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}
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@Override
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public void setAdapter(Adapter adapter) {
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final Adapter<?> oldAdapter = getAdapter();
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if (oldAdapter != null) {
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oldAdapter.unregisterAdapterDataObserver(observer);
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}
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super.setAdapter(adapter);
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if (adapter != null) {
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adapter.registerAdapterDataObserver(observer);
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}
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checkIfEmpty();
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}
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public void setEmptyView(View emptyView) {
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this.emptyView = emptyView;
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checkIfEmpty();
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}
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}
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