Refactor all apps to depend on activity context.

The current AllAppsContainerView has been split into a base class and a
subclass for activities. The base class allows using all apps with an
activity context. A-Z and work profile tabs are supported, but search
and the hotseat still require an Activity.

Test: Manual. All apps should work the same.
Bug: 204696617
Change-Id: I3b146714bc11b3b3555d97623aab5d78ac836482

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

@@ -0,0 +1,207 @@
+/*
+ * 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 android.content.Context;
+import android.content.Intent;
+import android.util.AttributeSet;
+import android.view.KeyEvent;
+import android.view.MotionEvent;
+import android.view.View;
+
+import androidx.core.graphics.ColorUtils;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.android.launcher3.BaseDraggingActivity;
+import com.android.launcher3.R;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.allapps.search.SearchAdapterProvider;
+import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.util.PackageManagerHelper;
+
+import java.util.Objects;
+
+/**
+ * All apps container view with search support for use in a dragging activity.
+ *
+ * @param <T> Type of context inflating all apps.
+ */
+public class ActivityAllAppsContainerView<T extends BaseDraggingActivity> extends
+        BaseAllAppsContainerView<T> {
+
+    protected SearchUiManager mSearchUiManager;
+    /**
+     * View that defines the search box. Result is rendered inside the recycler view defined in the
+     * base class.
+     */
+    private View mSearchContainer;
+    /** {@code true} when rendered view is in search state instead of the scroll state. */
+    private boolean mIsSearching;
+
+    public ActivityAllAppsContainerView(Context context) {
+        this(context, null);
+    }
+
+    public ActivityAllAppsContainerView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public ActivityAllAppsContainerView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        mActivityContext.addOnDeviceProfileChangeListener(this);
+    }
+
+    public SearchUiManager getSearchUiManager() {
+        return mSearchUiManager;
+    }
+
+    public View getSearchView() {
+        return mSearchContainer;
+    }
+
+    /** Updates all apps container with the latest search query. */
+    public void setLastSearchQuery(String query) {
+        Intent marketSearchIntent = PackageManagerHelper.getMarketSearchIntent(
+                mActivityContext, query);
+        OnClickListener marketSearchClickListener = (v) -> mActivityContext.startActivitySafely(v,
+                marketSearchIntent, null);
+        for (int i = 0; i < mAH.size(); i++) {
+            mAH.get(i).adapter.setLastSearchQuery(query, marketSearchClickListener);
+        }
+        mIsSearching = true;
+        rebindAdapters();
+        mHeader.setCollapsed(true);
+    }
+
+    /** Invoke when the current search session is finished. */
+    public void onClearSearchResult() {
+        mIsSearching = false;
+        mHeader.setCollapsed(false);
+        rebindAdapters();
+        mHeader.reset(false);
+    }
+
+    /** Invoke when the search results change. */
+    public void onSearchResultsChanged() {
+        for (int i = 0; i < mAH.size(); i++) {
+            if (mAH.get(i).mRecyclerView != null) {
+                mAH.get(i).mRecyclerView.onSearchResultsChanged();
+            }
+        }
+    }
+
+    /** Handles selection on focused view and returns {@code true} on success. */
+    public boolean launchHighlightedItem() {
+        return getMainAdapterProvider().launchHighlightedItem();
+    }
+
+    @Override
+    protected SearchAdapterProvider<?> createMainAdapterProvider() {
+        return mActivityContext.createSearchAdapterProvider(this);
+    }
+
+    @Override
+    public boolean shouldContainerScroll(MotionEvent ev) {
+        // IF the MotionEvent is inside the search box, and the container keeps on receiving
+        // touch input, container should move down.
+        if (mActivityContext.getDragLayer().isEventOverView(mSearchContainer, ev)) {
+            return true;
+        }
+        return super.shouldContainerScroll(ev);
+    }
+
+    @Override
+    public void reset(boolean animate) {
+        super.reset(animate);
+        // Reset the search bar after transitioning home.
+        mSearchUiManager.resetSearch();
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        super.onFinishInflate();
+        mSearchContainer = findViewById(R.id.search_container_all_apps);
+        mSearchUiManager = (SearchUiManager) mSearchContainer;
+        mSearchUiManager.initializeSearch(this);
+    }
+
+    @Override
+    public boolean dispatchKeyEvent(KeyEvent event) {
+        mSearchUiManager.preDispatchKeyEvent(event);
+        return super.dispatchKeyEvent(event);
+    }
+
+    @Override
+    public String getDescription() {
+        if (!mUsingTabs && mIsSearching) {
+            return getContext().getString(R.string.all_apps_search_results);
+        } else {
+            return super.getDescription();
+        }
+    }
+
+    @Override
+    protected boolean showTabs() {
+        return super.showTabs() && !mIsSearching;
+    }
+
+    @Override
+    protected void rebindAdapters(boolean force) {
+        super.rebindAdapters(force);
+        if (!FeatureFlags.ENABLE_DEVICE_SEARCH.get()
+                || getMainAdapterProvider().getDecorator() == null) {
+            return;
+        }
+
+        RecyclerView.ItemDecoration decoration = getMainAdapterProvider().getDecorator();
+        mAH.stream()
+                .map(adapterHolder -> adapterHolder.mRecyclerView)
+                .filter(Objects::nonNull)
+                .forEach(v -> {
+                    v.removeItemDecoration(decoration); // Remove in case it is already added.
+                    v.addItemDecoration(decoration);
+                });
+    }
+
+    @Override
+    protected void updateHeaderScroll(int scrolledOffset) {
+        super.updateHeaderScroll(scrolledOffset);
+        if (mSearchUiManager.getEditText() == null) {
+            return;
+        }
+
+        float prog = Utilities.boundToRange((float) scrolledOffset / mHeaderThreshold, 0f, 1f);
+        boolean bgVisible = mSearchUiManager.getBackgroundVisibility();
+        if (scrolledOffset == 0 && !mIsSearching) {
+            bgVisible = true;
+        } else if (scrolledOffset > mHeaderThreshold) {
+            bgVisible = false;
+        }
+        mSearchUiManager.setBackgroundVisibility(bgVisible, 1 - prog);
+    }
+
+    @Override
+    protected int getHeaderColor(float blendRatio) {
+        return ColorUtils.setAlphaComponent(
+                super.getHeaderColor(blendRatio),
+                (int) (mSearchContainer.getAlpha() * 255));
+    }
+
+    @Override
+    protected int getHeaderBottom() {
+        return super.getHeaderBottom() + mSearchContainer.getBottom();
+    }
+}