Merge "Extract out common adapter logic to support different AllApps layouts" into tm-dev

quickstep/src/com/android/launcher3/taskbar/allapps/TaskbarAllAppsContainerView.java

@@ -25,6 +25,9 @@ import android.view.WindowInsets;
 import androidx.recyclerview.widget.RecyclerView;
 
 import com.android.launcher3.allapps.AllAppsGridAdapter;
+import com.android.launcher3.allapps.AlphabeticalAppsList;
+import com.android.launcher3.allapps.BaseAdapterProvider;
+import com.android.launcher3.allapps.BaseAllAppsAdapter;
 import com.android.launcher3.allapps.BaseAllAppsContainerView;
 import com.android.launcher3.allapps.search.SearchAdapterProvider;
 
@@ -79,4 +82,11 @@ public class TaskbarAllAppsContainerView extends BaseAllAppsContainerView<Taskba
         setInsets(insets.getInsets(WindowInsets.Type.systemBars()).toRect());
         return super.onApplyWindowInsets(insets);
     }
+
+    @Override
+    protected BaseAllAppsAdapter getAdapter(AlphabeticalAppsList<TaskbarAllAppsContext> mAppsList,
+            BaseAdapterProvider[] adapterProviders) {
+        return new AllAppsGridAdapter<>(mActivityContext, getLayoutInflater(), mAppsList,
+                adapterProviders);
+    }
 }

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

@@ -256,4 +256,11 @@ public class ActivityAllAppsContainerView<T extends BaseDraggingActivity> extend
         layoutParams.removeRule(RelativeLayout.BELOW);
         layoutParams.addRule(RelativeLayout.ALIGN_PARENT_TOP);
     }
+
+    @Override
+    protected BaseAllAppsAdapter getAdapter(AlphabeticalAppsList<T> mAppsList,
+            BaseAdapterProvider[] adapterProviders) {
+        return new AllAppsGridAdapter<>(mActivityContext, getLayoutInflater(), mAppsList,
+                adapterProviders);
+    }
 }

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

@@ -15,36 +15,20 @@
  */
 package com.android.launcher3.allapps;
 
-import static com.android.launcher3.touch.ItemLongClickListener.INSTANCE_ALL_APPS;
-
 import android.content.Context;
-import android.content.res.Resources;
-import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.View;
-import android.view.View.OnClickListener;
-import android.view.View.OnFocusChangeListener;
-import android.view.View.OnLongClickListener;
 import android.view.ViewGroup;
 import android.view.accessibility.AccessibilityEvent;
-import android.widget.TextView;
 
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
 import androidx.core.view.accessibility.AccessibilityEventCompat;
 import androidx.core.view.accessibility.AccessibilityNodeInfoCompat;
 import androidx.core.view.accessibility.AccessibilityRecordCompat;
 import androidx.recyclerview.widget.GridLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
-import com.android.launcher3.BubbleTextView;
-import com.android.launcher3.R;
-import com.android.launcher3.config.FeatureFlags;
-import com.android.launcher3.model.data.AppInfo;
-import com.android.launcher3.model.data.ItemInfoWithIcon;
 import com.android.launcher3.views.ActivityContext;
 
-import java.util.Arrays;
 import java.util.List;
 
 /**
@@ -53,111 +37,26 @@ import java.util.List;
  * @param <T> Type of context inflating all apps.
  */
 public class AllAppsGridAdapter<T extends Context & ActivityContext> extends
-        RecyclerView.Adapter<AllAppsGridAdapter.ViewHolder> {
+        BaseAllAppsAdapter<T> {
 
     public static final String TAG = "AppsGridAdapter";
+    private final GridLayoutManager mGridLayoutMgr;
+    private final GridSpanSizer mGridSizer;
 
-    // A normal icon
+    public AllAppsGridAdapter(T activityContext, LayoutInflater inflater,
-    public static final int VIEW_TYPE_ICON = 1 << 1;
+            AlphabeticalAppsList apps, BaseAdapterProvider[] adapterProviders) {
-    // The message shown when there are no filtered results
+        super(activityContext, inflater, apps, adapterProviders);
-    public static final int VIEW_TYPE_EMPTY_SEARCH = 1 << 2;
+        mGridSizer = new GridSpanSizer();
-    // The message to continue to a market search when there are no filtered results
+        mGridLayoutMgr = new AppsGridLayoutManager(mActivityContext);
-    public static final int VIEW_TYPE_SEARCH_MARKET = 1 << 3;
+        mGridLayoutMgr.setSpanSizeLookup(mGridSizer);
-
+        setAppsPerRow(activityContext.getDeviceProfile().numShownAllAppsColumns);
-    // We use various dividers for various purposes.  They share enough attributes to reuse layouts,
-    // but differ in enough attributes to require different view types
-
-    // A divider that separates the apps list and the search market button
-    public static final int VIEW_TYPE_ALL_APPS_DIVIDER = 1 << 4;
-
-    // Common view type masks
-    public static final int VIEW_TYPE_MASK_DIVIDER = VIEW_TYPE_ALL_APPS_DIVIDER;
-    public static final int VIEW_TYPE_MASK_ICON = VIEW_TYPE_ICON;
-
-
-    private final BaseAdapterProvider[] mAdapterProviders;
-
-    /**
-     * ViewHolder for each icon.
-     */
-    public static class ViewHolder extends RecyclerView.ViewHolder {
-
-        public ViewHolder(View v) {
-            super(v);
-        }
     }
 
     /**
-     * Info about a particular adapter item (can be either section or app)
+     * Returns the grid layout manager.
      */
-    public static class AdapterItem {
+    public RecyclerView.LayoutManager getLayoutManager() {
-        /** Common properties */
+        return mGridLayoutMgr;
-        // The index of this adapter item in the list
-        public int position;
-        // The type of this item
-        public int viewType;
-
-        // The section name of this item.  Note that there can be multiple items with different
-        // sectionNames in the same section
-        public String sectionName = null;
-        // The row that this item shows up on
-        public int rowIndex;
-        // The index of this app in the row
-        public int rowAppIndex;
-        // The associated ItemInfoWithIcon for the item
-        public ItemInfoWithIcon itemInfo = null;
-        // The index of this app not including sections
-        public int appIndex = -1;
-        // Search section associated to result
-        public DecorationInfo decorationInfo = null;
-
-        /**
-         * Factory method for AppIcon AdapterItem
-         */
-        public static AdapterItem asApp(int pos, String sectionName, AppInfo appInfo,
-                int appIndex) {
-            AdapterItem item = new AdapterItem();
-            item.viewType = VIEW_TYPE_ICON;
-            item.position = pos;
-            item.sectionName = sectionName;
-            item.itemInfo = appInfo;
-            item.appIndex = appIndex;
-            return item;
-        }
-
-        /**
-         * Factory method for empty search results view
-         */
-        public static AdapterItem asEmptySearch(int pos) {
-            AdapterItem item = new AdapterItem();
-            item.viewType = VIEW_TYPE_EMPTY_SEARCH;
-            item.position = pos;
-            return item;
-        }
-
-        /**
-         * Factory method for a dividerView in AllAppsSearch
-         */
-        public static AdapterItem asAllAppsDivider(int pos) {
-            AdapterItem item = new AdapterItem();
-            item.viewType = VIEW_TYPE_ALL_APPS_DIVIDER;
-            item.position = pos;
-            return item;
-        }
-
-        /**
-         * Factory method for a market search button
-         */
-        public static AdapterItem asMarketSearch(int pos) {
-            AdapterItem item = new AdapterItem();
-            item.viewType = VIEW_TYPE_SEARCH_MARKET;
-            item.position = pos;
-            return item;
-        }
-
-        protected boolean isCountedForAccessibility() {
-            return viewType == VIEW_TYPE_ICON || viewType == VIEW_TYPE_SEARCH_MARKET;
-        }
     }
 
     /**
@@ -217,7 +116,7 @@ public class AllAppsGridAdapter<T extends Context & ActivityContext> extends
          */
         private int getRowsNotForAccessibility(int adapterPosition) {
             List<AdapterItem> items = mApps.getAdapterItems();
-            adapterPosition = Math.max(adapterPosition, mApps.getAdapterItems().size() - 1);
+            adapterPosition = Math.max(adapterPosition, items.size() - 1);
             int extraRows = 0;
             for (int i = 0; i <= adapterPosition; i++) {
                 if (!isViewType(items.get(i).viewType, VIEW_TYPE_MASK_ICON)) {
@@ -228,6 +127,20 @@ public class AllAppsGridAdapter<T extends Context & ActivityContext> extends
         }
     }
 
+    @Override
+    public void setAppsPerRow(int appsPerRow) {
+        mAppsPerRow = appsPerRow;
+        int totalSpans = mAppsPerRow;
+        for (BaseAdapterProvider adapterProvider : mAdapterProviders) {
+            for (int itemPerRow : adapterProvider.getSupportedItemsPerRowArray()) {
+                if (totalSpans % itemPerRow != 0) {
+                    totalSpans *= itemPerRow;
+                }
+            }
+        }
+        mGridLayoutMgr.setSpanCount(totalSpans);
+    }
+
     /**
      * Helper class to size the grid items.
      */
@@ -255,202 +168,4 @@ public class AllAppsGridAdapter<T extends Context & ActivityContext> extends
             }
         }
     }
-
-    private final T mActivityContext;
-    private final LayoutInflater mLayoutInflater;
-    private final AlphabeticalAppsList<T> mApps;
-    private final GridLayoutManager mGridLayoutMgr;
-    private final GridSpanSizer mGridSizer;
-
-    private final OnClickListener mOnIconClickListener;
-    private OnLongClickListener mOnIconLongClickListener = INSTANCE_ALL_APPS;
-
-    private int mAppsPerRow;
-
-    private OnFocusChangeListener mIconFocusListener;
-
-    // The text to show when there are no search results and no market search handler.
-    protected String mEmptySearchMessage;
-    // The click listener to send off to the market app, updated each time the search query changes.
-    private OnClickListener mMarketSearchClickListener;
-
-    private final int mExtraHeight;
-
-    public AllAppsGridAdapter(T activityContext, LayoutInflater inflater,
-            AlphabeticalAppsList<T> apps, BaseAdapterProvider[] adapterProviders) {
-        Resources res = activityContext.getResources();
-        mActivityContext = activityContext;
-        mApps = apps;
-        mEmptySearchMessage = res.getString(R.string.all_apps_loading_message);
-        mGridSizer = new GridSpanSizer();
-        mGridLayoutMgr = new AppsGridLayoutManager(mActivityContext);
-        mGridLayoutMgr.setSpanSizeLookup(mGridSizer);
-        mLayoutInflater = inflater;
-
-        mOnIconClickListener = mActivityContext.getItemOnClickListener();
-
-        mAdapterProviders = adapterProviders;
-        setAppsPerRow(mActivityContext.getDeviceProfile().numShownAllAppsColumns);
-        mExtraHeight = mActivityContext.getResources().getDimensionPixelSize(
-                R.dimen.all_apps_height_extra);
-    }
-
-    public void setAppsPerRow(int appsPerRow) {
-        mAppsPerRow = appsPerRow;
-        int totalSpans = mAppsPerRow;
-        for (BaseAdapterProvider adapterProvider : mAdapterProviders) {
-            for (int itemPerRow : adapterProvider.getSupportedItemsPerRowArray()) {
-                if (totalSpans % itemPerRow != 0) {
-                    totalSpans *= itemPerRow;
-                }
-            }
-        }
-        mGridLayoutMgr.setSpanCount(totalSpans);
-    }
-
-    /**
-     * Sets the long click listener for icons
-     */
-    public void setOnIconLongClickListener(@Nullable OnLongClickListener listener) {
-        mOnIconLongClickListener = listener;
-    }
-
-    public static boolean isDividerViewType(int viewType) {
-        return isViewType(viewType, VIEW_TYPE_MASK_DIVIDER);
-    }
-
-    public static boolean isIconViewType(int viewType) {
-        return isViewType(viewType, VIEW_TYPE_MASK_ICON);
-    }
-
-    public static boolean isViewType(int viewType, int viewTypeMask) {
-        return (viewType & viewTypeMask) != 0;
-    }
-
-    public void setIconFocusListener(OnFocusChangeListener focusListener) {
-        mIconFocusListener = focusListener;
-    }
-
-    /**
-     * Sets the last search query that was made, used to show when there are no results and to also
-     * seed the intent for searching the market.
-     */
-    public void setLastSearchQuery(String query, OnClickListener marketSearchClickListener) {
-        Resources res = mActivityContext.getResources();
-        mEmptySearchMessage = res.getString(R.string.all_apps_no_search_results, query);
-        mMarketSearchClickListener = marketSearchClickListener;
-    }
-
-    /**
-     * Returns the grid layout manager.
-     */
-    public GridLayoutManager getLayoutManager() {
-        return mGridLayoutMgr;
-    }
-
-    @Override
-    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
-        switch (viewType) {
-            case VIEW_TYPE_ICON:
-                int layout = !FeatureFlags.ENABLE_TWOLINE_ALLAPPS.get() ? R.layout.all_apps_icon
-                        : R.layout.all_apps_icon_twoline;
-                BubbleTextView icon = (BubbleTextView) mLayoutInflater.inflate(
-                        layout, parent, false);
-                icon.setLongPressTimeoutFactor(1f);
-                icon.setOnFocusChangeListener(mIconFocusListener);
-                icon.setOnClickListener(mOnIconClickListener);
-                icon.setOnLongClickListener(mOnIconLongClickListener);
-                // Ensure the all apps icon height matches the workspace icons in portrait mode.
-                icon.getLayoutParams().height =
-                        mActivityContext.getDeviceProfile().allAppsCellHeightPx;
-                if (FeatureFlags.ENABLE_TWOLINE_ALLAPPS.get()) {
-                    icon.getLayoutParams().height += mExtraHeight;
-                }
-                return new ViewHolder(icon);
-            case VIEW_TYPE_EMPTY_SEARCH:
-                return new ViewHolder(mLayoutInflater.inflate(R.layout.all_apps_empty_search,
-                        parent, false));
-            case VIEW_TYPE_SEARCH_MARKET:
-                View searchMarketView = mLayoutInflater.inflate(R.layout.all_apps_search_market,
-                        parent, false);
-                searchMarketView.setOnClickListener(mMarketSearchClickListener);
-                return new ViewHolder(searchMarketView);
-            case VIEW_TYPE_ALL_APPS_DIVIDER:
-                return new ViewHolder(mLayoutInflater.inflate(
-                        R.layout.all_apps_divider, parent, false));
-            default:
-                BaseAdapterProvider adapterProvider = getAdapterProvider(viewType);
-                if (adapterProvider != null) {
-                    return adapterProvider.onCreateViewHolder(mLayoutInflater, parent, viewType);
-                }
-                throw new RuntimeException("Unexpected view type" + viewType);
-        }
-    }
-
-    @Override
-    public void onBindViewHolder(ViewHolder holder, int position) {
-        switch (holder.getItemViewType()) {
-            case VIEW_TYPE_ICON:
-                AdapterItem adapterItem = mApps.getAdapterItems().get(position);
-                BubbleTextView icon = (BubbleTextView) holder.itemView;
-                icon.reset();
-                if (adapterItem.itemInfo instanceof AppInfo) {
-                    icon.applyFromApplicationInfo((AppInfo) adapterItem.itemInfo);
-                } else {
-                    icon.applyFromItemInfoWithIcon(adapterItem.itemInfo);
-                }
-                break;
-            case VIEW_TYPE_EMPTY_SEARCH:
-                TextView emptyViewText = (TextView) holder.itemView;
-                emptyViewText.setText(mEmptySearchMessage);
-                emptyViewText.setGravity(mApps.hasNoFilteredResults() ? Gravity.CENTER :
-                        Gravity.START | Gravity.CENTER_VERTICAL);
-                break;
-            case VIEW_TYPE_SEARCH_MARKET:
-                TextView searchView = (TextView) holder.itemView;
-                if (mMarketSearchClickListener != null) {
-                    searchView.setVisibility(View.VISIBLE);
-                } else {
-                    searchView.setVisibility(View.GONE);
-                }
-                break;
-            case VIEW_TYPE_ALL_APPS_DIVIDER:
-                // nothing to do
-                break;
-            default:
-                BaseAdapterProvider adapterProvider = getAdapterProvider(holder.getItemViewType());
-                if (adapterProvider != null) {
-                    adapterProvider.onBindView(holder, position);
-                }
-        }
-    }
-
-    @Override
-    public void onViewRecycled(@NonNull ViewHolder holder) {
-        super.onViewRecycled(holder);
-    }
-
-    @Override
-    public boolean onFailedToRecycleView(ViewHolder holder) {
-        // Always recycle and we will reset the view when it is bound
-        return true;
-    }
-
-    @Override
-    public int getItemCount() {
-        return mApps.getAdapterItems().size();
-    }
-
-    @Override
-    public int getItemViewType(int position) {
-        AdapterItem item = mApps.getAdapterItems().get(position);
-        return item.viewType;
-    }
-
-    @Nullable
-    private BaseAdapterProvider getAdapterProvider(int viewType) {
-        return Arrays.stream(mAdapterProviders).filter(
-                adapterProvider -> adapterProvider.isViewSupported(viewType)).findFirst().orElse(
-                null);
-    }
 }

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

@@ -18,7 +18,7 @@ package com.android.launcher3.allapps;
 
 import android.content.Context;
 
-import com.android.launcher3.allapps.AllAppsGridAdapter.AdapterItem;
+import com.android.launcher3.allapps.BaseAllAppsAdapter.AdapterItem;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.model.data.AppInfo;
 import com.android.launcher3.util.ItemInfoMatcher;
@@ -82,7 +82,7 @@ public class AlphabeticalAppsList<T extends Context & ActivityContext> implement
 
     // The of ordered component names as a result of a search query
     private ArrayList<AdapterItem> mSearchResults;
-    private AllAppsGridAdapter<T> mAdapter;
+    private BaseAllAppsAdapter<T> mAdapter;
     private AppInfoComparator mAppNameComparator;
     private final int mNumAppsPerRow;
     private int mNumAppRowsInAdapter;
@@ -106,7 +106,7 @@ public class AlphabeticalAppsList<T extends Context & ActivityContext> implement
     /**
      * Sets the adapter to notify when this dataset changes.
      */
-    public void setAdapter(AllAppsGridAdapter<T> adapter) {
+    public void setAdapter(BaseAllAppsAdapter<T> adapter) {
         mAdapter = adapter;
     }
 

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

@@ -0,0 +1,333 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.allapps;
+
+import static com.android.launcher3.touch.ItemLongClickListener.INSTANCE_ALL_APPS;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.View.OnFocusChangeListener;
+import android.view.View.OnLongClickListener;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.android.launcher3.BubbleTextView;
+import com.android.launcher3.R;
+import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.model.data.AppInfo;
+import com.android.launcher3.model.data.ItemInfoWithIcon;
+import com.android.launcher3.views.ActivityContext;
+
+import java.util.Arrays;
+
+/**
+ * Adapter for all the apps.
+ *
+ * @param <T> Type of context inflating all apps.
+ */
+public abstract class BaseAllAppsAdapter<T extends Context & ActivityContext> extends
+        RecyclerView.Adapter<BaseAllAppsAdapter.ViewHolder> {
+
+    public static final String TAG = "BaseAllAppsAdapter";
+
+    // A normal icon
+    public static final int VIEW_TYPE_ICON = 1 << 1;
+    // The message shown when there are no filtered results
+    public static final int VIEW_TYPE_EMPTY_SEARCH = 1 << 2;
+    // The message to continue to a market search when there are no filtered results
+    public static final int VIEW_TYPE_SEARCH_MARKET = 1 << 3;
+
+    // We use various dividers for various purposes.  They share enough attributes to reuse layouts,
+    // but differ in enough attributes to require different view types
+
+    // A divider that separates the apps list and the search market button
+    public static final int VIEW_TYPE_ALL_APPS_DIVIDER = 1 << 4;
+
+    // Common view type masks
+    public static final int VIEW_TYPE_MASK_DIVIDER = VIEW_TYPE_ALL_APPS_DIVIDER;
+    public static final int VIEW_TYPE_MASK_ICON = VIEW_TYPE_ICON;
+
+
+    protected final BaseAdapterProvider[] mAdapterProviders;
+
+    /**
+     * ViewHolder for each icon.
+     */
+    public static class ViewHolder extends RecyclerView.ViewHolder {
+
+        public ViewHolder(View v) {
+            super(v);
+        }
+    }
+
+    /** Sets the number of apps to be displayed in one row of the all apps screen. */
+    public abstract void setAppsPerRow(int appsPerRow);
+
+    /**
+     * Info about a particular adapter item (can be either section or app)
+     */
+    public static class AdapterItem {
+        /** Common properties */
+        // The index of this adapter item in the list
+        public int position;
+        // The type of this item
+        public int viewType;
+
+        // The section name of this item.  Note that there can be multiple items with different
+        // sectionNames in the same section
+        public String sectionName = null;
+        // The row that this item shows up on
+        public int rowIndex;
+        // The index of this app in the row
+        public int rowAppIndex;
+        // The associated ItemInfoWithIcon for the item
+        public ItemInfoWithIcon itemInfo = null;
+        // The index of this app not including sections
+        public int appIndex = -1;
+        // Search section associated to result
+        public DecorationInfo decorationInfo = null;
+
+        /**
+         * Factory method for AppIcon AdapterItem
+         */
+        public static AdapterItem asApp(int pos, String sectionName, AppInfo appInfo,
+                int appIndex) {
+            AdapterItem item = new AdapterItem();
+            item.viewType = VIEW_TYPE_ICON;
+            item.position = pos;
+            item.sectionName = sectionName;
+            item.itemInfo = appInfo;
+            item.appIndex = appIndex;
+            return item;
+        }
+
+        /**
+         * Factory method for empty search results view
+         */
+        public static AdapterItem asEmptySearch(int pos) {
+            AdapterItem item = new AdapterItem();
+            item.viewType = VIEW_TYPE_EMPTY_SEARCH;
+            item.position = pos;
+            return item;
+        }
+
+        /**
+         * Factory method for a dividerView in AllAppsSearch
+         */
+        public static AdapterItem asAllAppsDivider(int pos) {
+            AdapterItem item = new AdapterItem();
+            item.viewType = VIEW_TYPE_ALL_APPS_DIVIDER;
+            item.position = pos;
+            return item;
+        }
+
+        /**
+         * Factory method for a market search button
+         */
+        public static AdapterItem asMarketSearch(int pos) {
+            AdapterItem item = new AdapterItem();
+            item.viewType = VIEW_TYPE_SEARCH_MARKET;
+            item.position = pos;
+            return item;
+        }
+
+        protected boolean isCountedForAccessibility() {
+            return viewType == VIEW_TYPE_ICON || viewType == VIEW_TYPE_SEARCH_MARKET;
+        }
+    }
+
+    protected final T mActivityContext;
+    protected final AlphabeticalAppsList<T> mApps;
+    // The text to show when there are no search results and no market search handler.
+    protected String mEmptySearchMessage;
+    protected int mAppsPerRow;
+
+    private final LayoutInflater mLayoutInflater;
+    private final OnClickListener mOnIconClickListener;
+    private OnLongClickListener mOnIconLongClickListener = INSTANCE_ALL_APPS;
+    private OnFocusChangeListener mIconFocusListener;
+    // The click listener to send off to the market app, updated each time the search query changes.
+    private OnClickListener mMarketSearchClickListener;
+    private final int mExtraHeight;
+
+    public BaseAllAppsAdapter(T activityContext, LayoutInflater inflater,
+            AlphabeticalAppsList<T> apps, BaseAdapterProvider[] adapterProviders) {
+        Resources res = activityContext.getResources();
+        mActivityContext = activityContext;
+        mApps = apps;
+        mEmptySearchMessage = res.getString(R.string.all_apps_loading_message);
+        mLayoutInflater = inflater;
+
+        mOnIconClickListener = mActivityContext.getItemOnClickListener();
+
+        mAdapterProviders = adapterProviders;
+        mExtraHeight = res.getDimensionPixelSize(R.dimen.all_apps_height_extra);
+    }
+
+    /**
+     * Sets the long click listener for icons
+     */
+    public void setOnIconLongClickListener(@Nullable OnLongClickListener listener) {
+        mOnIconLongClickListener = listener;
+    }
+
+    /** Checks if the passed viewType represents all apps divider. */
+    public static boolean isDividerViewType(int viewType) {
+        return isViewType(viewType, VIEW_TYPE_MASK_DIVIDER);
+    }
+
+    /** Checks if the passed viewType represents all apps icon. */
+    public static boolean isIconViewType(int viewType) {
+        return isViewType(viewType, VIEW_TYPE_MASK_ICON);
+    }
+
+    public void setIconFocusListener(OnFocusChangeListener focusListener) {
+        mIconFocusListener = focusListener;
+    }
+
+    /**
+     * Sets the last search query that was made, used to show when there are no results and to also
+     * seed the intent for searching the market.
+     */
+    public void setLastSearchQuery(String query, OnClickListener marketSearchClickListener) {
+        Resources res = mActivityContext.getResources();
+        mEmptySearchMessage = res.getString(R.string.all_apps_no_search_results, query);
+        mMarketSearchClickListener = marketSearchClickListener;
+    }
+
+    /**
+     * Returns the layout manager.
+     */
+    public abstract RecyclerView.LayoutManager getLayoutManager();
+
+    @Override
+    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+        switch (viewType) {
+            case VIEW_TYPE_ICON:
+                int layout = !FeatureFlags.ENABLE_TWOLINE_ALLAPPS.get() ? R.layout.all_apps_icon
+                        : R.layout.all_apps_icon_twoline;
+                BubbleTextView icon = (BubbleTextView) mLayoutInflater.inflate(
+                        layout, parent, false);
+                icon.setLongPressTimeoutFactor(1f);
+                icon.setOnFocusChangeListener(mIconFocusListener);
+                icon.setOnClickListener(mOnIconClickListener);
+                icon.setOnLongClickListener(mOnIconLongClickListener);
+                // Ensure the all apps icon height matches the workspace icons in portrait mode.
+                icon.getLayoutParams().height =
+                        mActivityContext.getDeviceProfile().allAppsCellHeightPx;
+                if (FeatureFlags.ENABLE_TWOLINE_ALLAPPS.get()) {
+                    icon.getLayoutParams().height += mExtraHeight;
+                }
+                return new ViewHolder(icon);
+            case VIEW_TYPE_EMPTY_SEARCH:
+                return new ViewHolder(mLayoutInflater.inflate(R.layout.all_apps_empty_search,
+                        parent, false));
+            case VIEW_TYPE_SEARCH_MARKET:
+                View searchMarketView = mLayoutInflater.inflate(R.layout.all_apps_search_market,
+                        parent, false);
+                searchMarketView.setOnClickListener(mMarketSearchClickListener);
+                return new ViewHolder(searchMarketView);
+            case VIEW_TYPE_ALL_APPS_DIVIDER:
+                return new ViewHolder(mLayoutInflater.inflate(
+                        R.layout.all_apps_divider, parent, false));
+            default:
+                BaseAdapterProvider adapterProvider = getAdapterProvider(viewType);
+                if (adapterProvider != null) {
+                    return adapterProvider.onCreateViewHolder(mLayoutInflater, parent, viewType);
+                }
+                throw new RuntimeException("Unexpected view type" + viewType);
+        }
+    }
+
+    @Override
+    public void onBindViewHolder(ViewHolder holder, int position) {
+        switch (holder.getItemViewType()) {
+            case VIEW_TYPE_ICON:
+                AdapterItem adapterItem = mApps.getAdapterItems().get(position);
+                BubbleTextView icon = (BubbleTextView) holder.itemView;
+                icon.reset();
+                if (adapterItem.itemInfo instanceof AppInfo) {
+                    icon.applyFromApplicationInfo((AppInfo) adapterItem.itemInfo);
+                } else {
+                    icon.applyFromItemInfoWithIcon(adapterItem.itemInfo);
+                }
+                break;
+            case VIEW_TYPE_EMPTY_SEARCH:
+                TextView emptyViewText = (TextView) holder.itemView;
+                emptyViewText.setText(mEmptySearchMessage);
+                emptyViewText.setGravity(mApps.hasNoFilteredResults() ? Gravity.CENTER :
+                        Gravity.START | Gravity.CENTER_VERTICAL);
+                break;
+            case VIEW_TYPE_SEARCH_MARKET:
+                TextView searchView = (TextView) holder.itemView;
+                if (mMarketSearchClickListener != null) {
+                    searchView.setVisibility(View.VISIBLE);
+                } else {
+                    searchView.setVisibility(View.GONE);
+                }
+                break;
+            case VIEW_TYPE_ALL_APPS_DIVIDER:
+                // nothing to do
+                break;
+            default:
+                BaseAdapterProvider adapterProvider = getAdapterProvider(holder.getItemViewType());
+                if (adapterProvider != null) {
+                    adapterProvider.onBindView(holder, position);
+                }
+        }
+    }
+
+    @Override
+    public void onViewRecycled(@NonNull ViewHolder holder) {
+        super.onViewRecycled(holder);
+    }
+
+    @Override
+    public boolean onFailedToRecycleView(ViewHolder holder) {
+        // Always recycle and we will reset the view when it is bound
+        return true;
+    }
+
+    @Override
+    public int getItemCount() {
+        return mApps.getAdapterItems().size();
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        AdapterItem item = mApps.getAdapterItems().get(position);
+        return item.viewType;
+    }
+
+    protected static boolean isViewType(int viewType, int viewTypeMask) {
+        return (viewType & viewTypeMask) != 0;
+    }
+
+    @Nullable
+    protected BaseAdapterProvider getAdapterProvider(int viewType) {
+        return Arrays.stream(mAdapterProviders).filter(
+                adapterProvider -> adapterProvider.isViewSupported(viewType)).findFirst().orElse(
+                null);
+    }
+}

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

@@ -44,7 +44,6 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
 import androidx.core.graphics.ColorUtils;
-import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
 import com.android.launcher3.DeviceProfile;
@@ -697,18 +696,21 @@ public abstract class BaseAllAppsContainerView<T extends Context & ActivityConte
         return ColorUtils.blendARGB(mScrimColor, mHeaderProtectionColor, blendRatio);
     }
 
+    protected abstract BaseAllAppsAdapter getAdapter(AlphabeticalAppsList<T> mAppsList,
+            BaseAdapterProvider[] adapterProviders);
+
     protected int getHeaderBottom() {
         return (int) getTranslationY();
     }
 
-    /** Holds a {@link AllAppsGridAdapter} and related fields. */
+    /** Holds a {@link BaseAllAppsAdapter} and related fields. */
     public class AdapterHolder {
         public static final int MAIN = 0;
         public static final int WORK = 1;
 
         private final boolean mIsWork;
-        public final AllAppsGridAdapter<T> adapter;
+        public final BaseAllAppsAdapter<T> adapter;
-        final LinearLayoutManager mLayoutManager;
+        final RecyclerView.LayoutManager mLayoutManager;
         final AlphabeticalAppsList<T> mAppsList;
         final Rect mPadding = new Rect();
         AllAppsRecyclerView mRecyclerView;
@@ -724,8 +726,7 @@ public abstract class BaseAllAppsContainerView<T extends Context & ActivityConte
                             mWorkManager.getAdapterProvider()}
                             : new BaseAdapterProvider[]{mMainAdapterProvider};
 
-            adapter = new AllAppsGridAdapter<>(mActivityContext, getLayoutInflater(), mAppsList,
+            adapter = getAdapter(mAppsList, adapterProviders);
-                    adapterProviders);
             mAppsList.setAdapter(adapter);
             mLayoutManager = adapter.getLayoutManager();
         }

src/com/android/launcher3/allapps/search/AllAppsSearchBarController.java

@@ -33,7 +33,7 @@ import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.ExtendedEditText;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.allapps.AllAppsGridAdapter.AdapterItem;
+import com.android.launcher3.allapps.BaseAllAppsAdapter.AdapterItem;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.search.SearchAlgorithm;
 import com.android.launcher3.search.SearchCallback;

src/com/android/launcher3/allapps/search/AppsSearchContainerLayout.java

@@ -38,9 +38,9 @@ import com.android.launcher3.ExtendedEditText;
 import com.android.launcher3.Insettable;
 import com.android.launcher3.R;
 import com.android.launcher3.allapps.ActivityAllAppsContainerView;
-import com.android.launcher3.allapps.AllAppsGridAdapter.AdapterItem;
 import com.android.launcher3.allapps.AllAppsStore;
 import com.android.launcher3.allapps.AlphabeticalAppsList;
+import com.android.launcher3.allapps.BaseAllAppsAdapter.AdapterItem;
 import com.android.launcher3.allapps.SearchUiManager;
 import com.android.launcher3.search.SearchCallback;
 

src/com/android/launcher3/allapps/search/DefaultAppSearchAlgorithm.java

@@ -23,7 +23,7 @@ import android.os.Handler;
 import androidx.annotation.AnyThread;
 
 import com.android.launcher3.LauncherAppState;
-import com.android.launcher3.allapps.AllAppsGridAdapter.AdapterItem;
+import com.android.launcher3.allapps.BaseAllAppsAdapter.AdapterItem;
 import com.android.launcher3.model.AllAppsList;
 import com.android.launcher3.model.BaseModelUpdateTask;
 import com.android.launcher3.model.BgDataModel;