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Commit f213afc0 authored by Anushree Ganjam's avatar Anushree Ganjam
Browse files

Add OnLayoutCompleted() Listener. 

OnLayoutCompleted() Listener for RecyclerView.LayoutManager#onLayoutCompleted(RecyclerView.State) so we can do impression logging when RecyclerView has finished laying out the items.

Bug: 204781396
Test: Manual
Change-Id: I59b81e98415b2b0c6f3b26d2c41d348242342048
parent 1d253ac8

src/com/android/launcher3/allapps/AllAppsGridAdapter.java

+34 −0
Original line number Original line Diff line number Diff line
@@ -31,6 +31,7 @@ import androidx.recyclerview.widget.RecyclerView.Adapter; 
import com.android.launcher3.util.ScrollableLayoutManager;

import com.android.launcher3.util.ScrollableLayoutManager;

import com.android.launcher3.views.ActivityContext;

import com.android.launcher3.views.ActivityContext;





import java.util.ArrayList;

import java.util.List;

import java.util.List;





/**

/**
@@ -43,6 +44,31 @@ public class AllAppsGridAdapter<T extends Context & ActivityContext> extends 




    public static final String TAG = "AppsGridAdapter";

    public static final String TAG = "AppsGridAdapter";

    private final AppsGridLayoutManager mGridLayoutMgr;

    private final AppsGridLayoutManager mGridLayoutMgr;

    private final List<OnLayoutCompletedListener> mOnLayoutCompletedListeners = new ArrayList<>();



    /**

     * Listener for {@link RecyclerView.LayoutManager#onLayoutCompleted(RecyclerView.State)}

     */

    public interface OnLayoutCompletedListener {

        void onLayoutCompleted();

    }



    /**

     * Adds a {@link OnLayoutCompletedListener} to receive a callback when {@link

     * RecyclerView.LayoutManager#onLayoutCompleted(RecyclerView.State)} is called

     */

    public void addOnLayoutCompletedListener(OnLayoutCompletedListener listener) {

        mOnLayoutCompletedListeners.add(listener);

    }



    /**

     * Removes a {@link OnLayoutCompletedListener} to not receive a callback when {@link

     * RecyclerView.LayoutManager#onLayoutCompleted(RecyclerView.State)} is called

     */

    public void removeOnLayoutCompletedListener(OnLayoutCompletedListener listener) {

        mOnLayoutCompletedListeners.remove(listener);

    }







    public AllAppsGridAdapter(T activityContext, LayoutInflater inflater,

    public AllAppsGridAdapter(T activityContext, LayoutInflater inflater,

            AlphabeticalAppsList apps, BaseAdapterProvider[] adapterProviders) {

            AlphabeticalAppsList apps, BaseAdapterProvider[] adapterProviders) {
@@ -132,6 +158,14 @@ public class AllAppsGridAdapter<T extends Context & ActivityContext> extends 
            return extraRows;

            return extraRows;

        }

        }





        @Override

        public void onLayoutCompleted(RecyclerView.State state) {

            super.onLayoutCompleted(state);

            for (OnLayoutCompletedListener listener : mOnLayoutCompletedListeners) {

                listener.onLayoutCompleted();

            }

        }



        @Override

        @Override

        protected int incrementTotalHeight(Adapter adapter, int position, int heightUntilLastPos) {

        protected int incrementTotalHeight(Adapter adapter, int position, int heightUntilLastPos) {

            AllAppsGridAdapter.AdapterItem item = mApps.getAdapterItems().get(position);

            AllAppsGridAdapter.AdapterItem item = mApps.getAdapterItems().get(position);