CustomLauncher: Google Feed integration

Change-Id: I4dd635369513e7e8db8f8e4363acb017e0ce8eb1
[kdrag0n: Debranded to com.android.launcher3]
[kdrag0n: Ported to Android 12 and converted libGoogleFeed to Soong]
Signed-off-by: Danny Lin <danny@kdrag0n.dev>

7 files changed, 260 insertions, 0 deletions

diff --git a/Android.bp b/Android.bp
index bab994add5..817d2120da 100644
--- a/Android.bp
+++ b/Android.bp
@@ -100,6 +100,13 @@ java_library {
     min_sdk_version: min_launcher3_sdk_version,
 }
 
+java_import {
+    name: "libGoogleFeed",
+    jars: [
+        "libs/libGoogleFeed.jar",
+    ],
+}
+
 // Library with all the dependencies for building Launcher3
 android_library {
     name: "Launcher3ResLib",
@@ -117,6 +124,7 @@ android_library {
         "androidx.cardview_cardview",
         "com.google.android.material_material",
         "iconloader_base",
+        "libGoogleFeed",
     ],
     manifest: "AndroidManifest-common.xml",
     sdk_version: "current",
diff --git a/libs/libGoogleFeed.jar b/libs/libGoogleFeed.jar
new file mode 100644
index 0000000000..158b76de40
--- /dev/null
+++ b/libs/libGoogleFeed.jar
diff --git a/quickstep/src/com/android/launcher3/CustomLauncher.java b/quickstep/src/com/android/launcher3/CustomLauncher.java
index 30060ead8e..1e41f42436 100644
--- a/quickstep/src/com/android/launcher3/CustomLauncher.java
+++ b/quickstep/src/com/android/launcher3/CustomLauncher.java
@@ -17,7 +17,13 @@
 package com.android.launcher3;
 
 import com.android.launcher3.uioverrides.QuickstepLauncher;
+import com.android.systemui.plugins.shared.LauncherOverlayManager;
 
 public class CustomLauncher extends QuickstepLauncher {
 
+    @Override
+    protected LauncherOverlayManager getDefaultOverlay() {
+        return new OverlayCallbackImpl(this);
+    }
+
 }
diff --git a/res/values/ice_strings.xml b/res/values/ice_strings.xml
new file mode 100644
index 0000000000..fc75f8f81f
--- /dev/null
+++ b/res/values/ice_strings.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+* Copyright (C) 2016 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.
+*/
+-->
+<resources>
+    <!-- Settings title to show Google Now at -1 screen on launcher. [CHAR LIMIT=50] -->
+    <string name="title_show_google_app">Swipe to access Google app</string>
+    <!-- Settings message explaining when the -1 screen is available on an LTR device. [CHAR LIMIT=100] -->
+    <string name="msg_minus_one_on_left">From Home screen, swipe left to open Google app</string>
+    <!-- Settings message explaining when the -1 screen is available on an RTL device. [CHAR LIMIT=100] -->
+    <string name="msg_minus_one_on_right">From Home screen, swipe right to open Google app</string>
+    <string name="pref_show_google_now_summary" translatable="false">@string/msg_minus_one_on_left</string>
+</resources>
diff --git a/res/xml/launcher_preferences.xml b/res/xml/launcher_preferences.xml
index 90de4987f5..3ae0f0c481 100644
--- a/res/xml/launcher_preferences.xml
+++ b/res/xml/launcher_preferences.xml
@@ -50,6 +50,12 @@
         launcher:logIdOn="615"
         launcher:logIdOff="616" />
 
+    <SwitchPreference
+        android:defaultValue="true"
+        android:key="pref_enable_minus_one"
+        android:summary="@string/pref_show_google_now_summary"
+        android:title="@string/title_show_google_app"/>
+
     <androidx.preference.PreferenceScreen
         android:key="pref_developer_options"
         android:persistent="false"
diff --git a/src/com/android/launcher3/OverlayCallbackImpl.java b/src/com/android/launcher3/OverlayCallbackImpl.java
new file mode 100644
index 0000000000..8d8609bce4
--- /dev/null
+++ b/src/com/android/launcher3/OverlayCallbackImpl.java
@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2016 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;
+
+import android.app.Activity;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
+import android.os.Bundle;
+
+import com.android.launcher3.Launcher;
+import com.android.launcher3.Utilities;
+import com.android.systemui.plugins.shared.LauncherOverlayManager;
+import com.android.systemui.plugins.shared.LauncherOverlayManager.LauncherOverlay;
+
+import com.google.android.libraries.gsa.launcherclient.LauncherClient;
+import com.google.android.libraries.gsa.launcherclient.LauncherClientCallbacks;
+
+import java.io.PrintWriter;
+
+/**
+ * Implements {@link LauncherOverlay} and passes all the corresponding events to {@link
+ * LauncherClient}. {@see setClient}
+ *
+ * <p>Implements {@link LauncherClientCallbacks} and sends all the corresponding callbacks to {@link
+ * Launcher}.
+ */
+public class OverlayCallbackImpl
+        implements LauncherOverlay, LauncherClientCallbacks, LauncherOverlayManager,
+        OnSharedPreferenceChangeListener {
+
+    public static final String KEY_ENABLE_MINUS_ONE = "pref_enable_minus_one";
+
+    private final Launcher mLauncher;
+    private final LauncherClient mClient;
+
+    private LauncherOverlayCallbacks mLauncherOverlayCallbacks;
+    private boolean mWasOverlayAttached = false;
+
+    public OverlayCallbackImpl(Launcher launcher) {
+        SharedPreferences prefs = Utilities.getPrefs(launcher);
+
+        mLauncher = launcher;
+        mClient = new LauncherClient(mLauncher, this, getClientOptions(prefs));
+        prefs.registerOnSharedPreferenceChangeListener(this);
+    }
+
+    @Override
+    public void onDeviceProvideChanged() {
+        mClient.reattachOverlay();
+    }
+
+    @Override
+    public void onAttachedToWindow() {
+        mClient.onAttachedToWindow();
+    }
+
+    @Override
+    public void onDetachedFromWindow() {
+        mClient.onDetachedFromWindow();
+    }
+
+    @Override
+    public void dump(String prefix, PrintWriter w) {
+        mClient.dump(prefix, w);
+    }
+
+    @Override
+    public void openOverlay() {
+        mClient.showOverlay(true);
+    }
+
+    @Override
+    public void hideOverlay(boolean animate) {
+        mClient.hideOverlay(animate);
+    }
+
+    @Override
+    public void hideOverlay(int duration) {
+        mClient.hideOverlay(duration);
+    }
+
+    @Override
+    public boolean startSearch(byte[] config, Bundle extras) {
+        return false;
+    }
+
+    @Override
+    public void onActivityCreated(Activity activity, Bundle bundle) {
+        // Not called
+    }
+
+    @Override
+    public void onActivityStarted(Activity activity) {
+        mClient.onStart();
+    }
+
+    @Override
+    public void onActivityResumed(Activity activity) {
+        mClient.onResume();
+    }
+
+    @Override
+    public void onActivityPaused(Activity activity) {
+        mClient.onPause();
+    }
+
+    @Override
+    public void onActivityStopped(Activity activity) {
+        mClient.onStop();
+    }
+
+    @Override
+    public void onActivitySaveInstanceState(Activity activity, Bundle bundle) { }
+
+    @Override
+    public void onActivityDestroyed(Activity activity) {
+        mClient.onDestroy();
+        mLauncher.getSharedPrefs().unregisterOnSharedPreferenceChangeListener(this);
+    }
+
+    @Override
+    public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {
+        if (KEY_ENABLE_MINUS_ONE.equals(key)) {
+            mClient.setClientOptions(getClientOptions(prefs));
+        }
+    }
+
+    @Override
+    public void onServiceStateChanged(boolean overlayAttached, boolean hotwordActive) {
+        if (overlayAttached != mWasOverlayAttached) {
+            mWasOverlayAttached = overlayAttached;
+            mLauncher.setLauncherOverlay(overlayAttached ? this : null);
+        }
+    }
+
+    @Override
+    public void onOverlayScrollChanged(float progress) {
+        if (mLauncherOverlayCallbacks != null) {
+            mLauncherOverlayCallbacks.onScrollChanged(progress);
+        }
+    }
+
+    @Override
+    public void onScrollInteractionBegin() {
+        mClient.startMove();
+    }
+
+    @Override
+    public void onScrollInteractionEnd() {
+        mClient.endMove();
+    }
+
+    @Override
+    public void onScrollChange(float progress, boolean rtl) {
+        mClient.updateMove(progress);
+    }
+
+    @Override
+    public void setOverlayCallbacks(LauncherOverlayCallbacks callbacks) {
+        mLauncherOverlayCallbacks = callbacks;
+    }
+
+
+    private LauncherClient.ClientOptions getClientOptions(SharedPreferences prefs) {
+        return new LauncherClient.ClientOptions(
+                prefs.getBoolean(KEY_ENABLE_MINUS_ONE, true),
+                true, /* enableHotword */
+                true /* enablePrewarming */
+        );
+    }
+}
diff --git a/src/com/android/launcher3/settings/SettingsActivity.java b/src/com/android/launcher3/settings/SettingsActivity.java
index 0c39632708..0885df9be2 100644
--- a/src/com/android/launcher3/settings/SettingsActivity.java
+++ b/src/com/android/launcher3/settings/SettingsActivity.java
@@ -20,8 +20,12 @@ import static androidx.core.view.accessibility.AccessibilityNodeInfoCompat.ACTIO
 
 import static com.android.launcher3.states.RotationHelper.ALLOW_ROTATION_PREFERENCE_KEY;
 
+import static com.android.launcher3.OverlayCallbackImpl.KEY_ENABLE_MINUS_ONE;
+
+import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
 import android.os.Bundle;
 import android.text.TextUtils;
 import android.view.MenuItem;
@@ -189,6 +193,10 @@ public class SettingsActivity extends FragmentActivity
         private boolean mPreferenceHighlighted = false;
         private Preference mDeveloperOptionPref;
 
+        protected static final String GSA_PACKAGE = "com.google.android.googlequicksearchbox";
+
+        private Preference mShowGoogleAppPref;
+
         @Override
         public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
             final Bundle args = getArguments();
@@ -270,6 +278,11 @@ public class SettingsActivity extends FragmentActivity
                 case DEVELOPER_OPTIONS_KEY:
                     mDeveloperOptionPref = preference;
                     return updateDeveloperOption();
+
+                case KEY_ENABLE_MINUS_ONE:
+                    mShowGoogleAppPref = preference;
+                    updateIsGoogleAppEnabled();
+                    return true;
             }
 
             return true;
@@ -293,6 +306,20 @@ public class SettingsActivity extends FragmentActivity
             return showPreference;
         }
 
+        public static boolean isGSAEnabled(Context context) {
+            try {
+                return context.getPackageManager().getApplicationInfo(GSA_PACKAGE, 0).enabled;
+            } catch (PackageManager.NameNotFoundException e) {
+                return false;
+            }
+        }
+
+        private void updateIsGoogleAppEnabled() {
+            if (mShowGoogleAppPref != null) {
+                mShowGoogleAppPref.setEnabled(isGSAEnabled(getContext()));
+            }
+        }
+
         @Override
         public void onResume() {
             super.onResume();
@@ -308,6 +335,7 @@ public class SettingsActivity extends FragmentActivity
                     requestAccessibilityFocus(getListView());
                 }
             }
+            updateIsGoogleAppEnabled();
         }
 
         private PreferenceHighlighter createHighlighter() {