Add All Apps search delegate for inflating search box.

Test: Manual
Bug: 216683257
Flag: not needed
Change-Id: I2e1d9b0abf6d370d7ff6d6af2bab002b87330d86

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

@@ -70,7 +70,7 @@ import com.android.launcher3.InsettableFrameLayout;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.allapps.BaseAllAppsAdapter.AdapterItem;
-import com.android.launcher3.allapps.search.DefaultSearchAdapterProvider;
+import com.android.launcher3.allapps.search.AllAppsSearchUiDelegate;
 import com.android.launcher3.allapps.search.SearchAdapterProvider;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.keyboard.FocusedItemDecorator;
@@ -132,6 +132,7 @@ public class ActivityAllAppsContainerView<T extends Context & ActivityContext>
     protected final Point mFastScrollerOffset = new Point();
     protected final int mScrimColor;
     protected final float mHeaderThreshold;
+    protected final AllAppsSearchUiDelegate mSearchUiDelegate;
 
     // Used to animate Search results out and A-Z apps in, or vice-versa.
     private final SearchTransitionController mSearchTransitionController;
@@ -217,11 +218,17 @@ public class ActivityAllAppsContainerView<T extends Context & ActivityContext>
                 getActiveRecyclerView().requestFocus();
             }
         });
+        mSearchUiDelegate = createSearchUiDelegate();
         initContent();
 
         mSearchTransitionController = new SearchTransitionController(this);
     }
 
+    /** Creates the delegate for initializing search. */
+    protected AllAppsSearchUiDelegate createSearchUiDelegate() {
+        return new AllAppsSearchUiDelegate(this);
+    }
+
     /**
      * Initializes the view hierarchy and internal variables. Any initialization which actually uses
      * these members should be done in {@link #onFinishInflate()}.
@@ -231,7 +238,7 @@ public class ActivityAllAppsContainerView<T extends Context & ActivityContext>
      *   onFinishInflate -> onPostCreate
      */
     protected void initContent() {
-        mMainAdapterProvider = createMainAdapterProvider();
+        mMainAdapterProvider = mSearchUiDelegate.createMainAdapterProvider();
 
         mAH.set(AdapterHolder.MAIN, new AdapterHolder(AdapterHolder.MAIN,
                 new AlphabeticalAppsList<>(mActivityContext, mAllAppsStore, null)));
@@ -252,6 +259,7 @@ public class ActivityAllAppsContainerView<T extends Context & ActivityContext>
         mSearchContainer = inflateSearchBox();
         addView(mSearchContainer);
         mSearchUiManager = (SearchUiManager) mSearchContainer;
+        mSearchUiDelegate.onInitializeSearchBox();
     }
 
     @Override
@@ -341,6 +349,7 @@ public class ActivityAllAppsContainerView<T extends Context & ActivityContext>
      */
     public void setSearchResults(ArrayList<AdapterItem> results, int searchResultCode) {
         setSearchResults(results);
+        mSearchUiDelegate.onSearchResultsChanged(results, searchResultCode);
     }
 
     private void animateToSearchState(boolean goingToSearch) {
@@ -788,12 +797,7 @@ public class ActivityAllAppsContainerView<T extends Context & ActivityContext>
      * Inflates the search box
      */
     protected View inflateSearchBox() {
-        return getLayoutInflater().inflate(R.layout.search_container_all_apps, this, false);
-    }
-
-    /** Creates the adapter provider for the main section. */
-    protected SearchAdapterProvider<?> createMainAdapterProvider() {
-        return new DefaultSearchAdapterProvider(mActivityContext);
+        return mSearchUiDelegate.inflateSearchBox();
     }
 
     /** The adapter provider for the main section. */
@@ -998,7 +1002,7 @@ public class ActivityAllAppsContainerView<T extends Context & ActivityContext>
     }
 
     public LayoutInflater getLayoutInflater() {
-        return LayoutInflater.from(getContext());
+        return mSearchUiDelegate.getLayoutInflater();
     }
 
     @Override
@@ -1306,6 +1310,7 @@ public class ActivityAllAppsContainerView<T extends Context & ActivityContext>
 
     protected void onInitializeRecyclerView(RecyclerView rv) {
         rv.addOnScrollListener(mScrollListener);
+        mSearchUiDelegate.onInitializeRecyclerView(rv);
     }
 
     /** Returns the instance of @{code SearchTransitionController}. */

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

@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2023 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.search;
+
+import android.view.LayoutInflater;
+import android.view.View;
+
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.android.launcher3.R;
+import com.android.launcher3.allapps.ActivityAllAppsContainerView;
+import com.android.launcher3.allapps.BaseAllAppsAdapter.AdapterItem;
+import com.android.launcher3.views.ActivityContext;
+
+import java.util.List;
+
+/** Initializes the search box and its interactions with All Apps. */
+public class AllAppsSearchUiDelegate {
+
+    protected final ActivityAllAppsContainerView<?> mAppsView;
+    protected final ActivityContext mActivityContext;
+
+    public AllAppsSearchUiDelegate(ActivityAllAppsContainerView<?> appsView) {
+        mAppsView = appsView;
+        mActivityContext = ActivityContext.lookupContext(mAppsView.getContext());
+    }
+
+    /** Invoked when an All Apps {@link RecyclerView} is initialized. */
+    public void onInitializeRecyclerView(RecyclerView rv) {
+        // Do nothing.
+    }
+
+    /** Invoked when search results are updated in All Apps. */
+    public void onSearchResultsChanged(List<AdapterItem> results, int searchResultCode) {
+        // Do nothing.
+    }
+
+    /** Invoked when the search box has been added to All Apps. */
+    public void onInitializeSearchBox() {
+        // Do nothing.
+    }
+
+    /** The layout inflater for All Apps and search UI. */
+    public LayoutInflater getLayoutInflater() {
+        return LayoutInflater.from(mAppsView.getContext());
+    }
+
+    /** Inflate the search box for All Apps. */
+    public View inflateSearchBox() {
+        return getLayoutInflater().inflate(R.layout.search_container_all_apps, mAppsView, false);
+    }
+
+    /** Creates the adapter provider for the main section. */
+    public SearchAdapterProvider<?> createMainAdapterProvider() {
+        return new DefaultSearchAdapterProvider(mActivityContext);
+    }
+}