commit 3fbca15555309d3d4e6b27b8107bb69bf6489351
author Sunny Goyal <sunnygoyal@google.com> Thu Nov 02 18:55:44 2017 -0700
committer Sunny Goyal <sunnygoyal@google.com> Fri Mar 09 12:57:11 2018 -0800
tree 86c28d5e406badeae4ccba38557f2ef263a9fd42
parent 016d7e93c1d87fb55330948c997b0cb7a368f66d

Adding support for prefenrece search in QuickStep

Bug: 62292864
Change-Id: Ic112626ca9c5942c91ced4ab42e64cbce4657701

src/com/android/launcher3/SettingsActivity.java

diff --git a/src/com/android/launcher3/SettingsActivity.java b/src/com/android/launcher3/SettingsActivity.java
index 6a4e93b..7fa0e52 100644
--- a/src/com/android/launcher3/SettingsActivity.java
+++ b/src/com/android/launcher3/SettingsActivity.java
@@ -31,11 +31,17 @@
 import android.preference.Preference;
 import android.preference.PreferenceFragment;
 import android.provider.Settings;
+import android.text.TextUtils;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Adapter;
 
 import com.android.launcher3.graphics.IconShapeOverride;
 import com.android.launcher3.notification.NotificationListener;
 import com.android.launcher3.util.SettingsObserver;
 import com.android.launcher3.views.ButtonPreference;
+import com.android.launcher3.views.HighlightableListView;
 
 /**
  * Settings activity for Launcher. Currently implements the following setting: Allow rotation
@@ -48,6 +54,10 @@
     /** Hidden field Settings.Secure.ENABLED_NOTIFICATION_LISTENERS */
     private static final String NOTIFICATION_ENABLED_LISTENERS = "enabled_notification_listeners";
 
+    private static final String EXTRA_FRAGMENT_ARG_KEY = ":settings:fragment_args_key";
+    private static final int DELAY_HIGHLIGHT_DURATION_MILLIS = 600;
+    private static final String SAVE_HIGHLIGHTED_KEY = "android:preference_highlighted";
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -55,11 +65,15 @@
         if (savedInstanceState == null) {
             // Display the fragment as the main content.
             getFragmentManager().beginTransaction()
-                    .replace(android.R.id.content, new LauncherSettingsFragment())
+                    .replace(android.R.id.content, getNewFragment())
                     .commit();
         }
     }
 
+    protected PreferenceFragment getNewFragment() {
+        return new LauncherSettingsFragment();
+    }
+
     /**
      * This fragment shows the launcher preferences.
      */
@@ -67,9 +81,22 @@
 
         private IconBadgingObserver mIconBadgingObserver;
 
+        private String mPreferenceKey;
+        private boolean mPreferenceHighlighted = false;
+
+        @Override
+        public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                Bundle savedInstanceState) {
+            return inflater.inflate(R.layout.launcher_preference, container, false);
+        }
+
         @Override
         public void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);
+            if (savedInstanceState != null) {
+                mPreferenceHighlighted = savedInstanceState.getBoolean(SAVE_HIGHLIGHTED_KEY);
+            }
+
             getPreferenceManager().setSharedPreferencesName(LauncherFiles.SHARED_PREFERENCES_KEY);
             addPreferencesFromResource(R.xml.launcher_preferences);
 
@@ -101,6 +128,43 @@
         }
 
         @Override
+        public void onSaveInstanceState(Bundle outState) {
+            super.onSaveInstanceState(outState);
+            outState.putBoolean(SAVE_HIGHLIGHTED_KEY, mPreferenceHighlighted);
+        }
+
+        @Override
+        public void onResume() {
+            super.onResume();
+
+            Intent intent = getActivity().getIntent();
+            mPreferenceKey = intent.getStringExtra(EXTRA_FRAGMENT_ARG_KEY);
+            if (isAdded() && !mPreferenceHighlighted && !TextUtils.isEmpty(mPreferenceKey)) {
+                getView().postDelayed(this::highlightPreference, DELAY_HIGHLIGHT_DURATION_MILLIS);
+            }
+        }
+
+        private void highlightPreference() {
+            HighlightableListView list = getView().findViewById(android.R.id.list);
+            Preference pref = findPreference(mPreferenceKey);
+            Adapter adapter = list.getAdapter();
+            if (adapter == null) {
+                return;
+            }
+
+            // Find the position
+            int position = -1;
+            for (int i = adapter.getCount() - 1; i >= 0; i--) {
+                if (pref == adapter.getItem(i)) {
+                    position = i;
+                    break;
+                }
+            }
+            list.highlightPosition(position);
+            mPreferenceHighlighted = true;
+        }
+
+        @Override
         public void onDestroy() {
             if (mIconBadgingObserver != null) {
                 mIconBadgingObserver.unregister();