Move logic from SavedAccessPoint fragment to controller

Change-Id: Ic54e536f97490cec1746fa58c42ec55b60d17f0e
Fixes: 64806699
Test: robotests

src/com/android/settings/wifi/savedaccesspoints/SavedAccessPointsPreferenceController.java

@@ -18,21 +18,127 @@ package com.android.settings.wifi.savedaccesspoints;
 
 
 import android.content.Context;
+import android.net.wifi.WifiManager;
+import android.util.Log;
+
+import androidx.annotation.VisibleForTesting;
+import androidx.preference.Preference;
+import androidx.preference.PreferenceGroup;
+import androidx.preference.PreferenceScreen;
 
 import com.android.settings.core.BasePreferenceController;
+import com.android.settings.utils.PreferenceGroupChildrenCache;
+import com.android.settingslib.core.lifecycle.LifecycleObserver;
+import com.android.settingslib.core.lifecycle.events.OnStart;
+import com.android.settingslib.utils.ThreadUtils;
+import com.android.settingslib.wifi.AccessPoint;
+import com.android.settingslib.wifi.AccessPointPreference;
+import com.android.settingslib.wifi.AccessPointPreference.UserBadgeCache;
+import com.android.settingslib.wifi.WifiSavedConfigUtils;
+
+import java.util.Collections;
+import java.util.List;
 
 /**
- * Controller that manages a PrferenceGroup, which contains a list of saved access points.
+ * Controller that manages a PreferenceGroup, which contains a list of saved access points.
  */
-public class SavedAccessPointsPreferenceController extends BasePreferenceController {
+public class SavedAccessPointsPreferenceController extends BasePreferenceController implements
+        LifecycleObserver, OnStart, Preference.OnPreferenceClickListener,
+        WifiManager.ActionListener {
+
+    private static final String TAG = "SavedAPPrefCtrl";
+
+    private final WifiManager mWifiManager;
+    private final PreferenceGroupChildrenCache mChildrenCache;
+
+    private final UserBadgeCache mUserBadgeCache;
+    private PreferenceGroup mPreferenceGroup;
+    private SavedAccessPointsWifiSettings mHost;
 
     public SavedAccessPointsPreferenceController(Context context,
             String preferenceKey) {
         super(context, preferenceKey);
+        mUserBadgeCache = new AccessPointPreference.UserBadgeCache(context.getPackageManager());
+        mWifiManager = context.getSystemService(WifiManager.class);
+        mChildrenCache = new PreferenceGroupChildrenCache();
+    }
+
+    public SavedAccessPointsPreferenceController setHost(SavedAccessPointsWifiSettings host) {
+        mHost = host;
+        return this;
     }
 
     @Override
     public int getAvailabilityStatus() {
         return AVAILABLE;
     }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mPreferenceGroup = (PreferenceGroup) screen.findPreference(getPreferenceKey());
+    }
+
+    @Override
+    public void onStart() {
+        refreshSavedAccessPoints();
+    }
+
+    public void postRefreshSavedAccessPoints() {
+        ThreadUtils.postOnMainThread(() -> refreshSavedAccessPoints());
+    }
+
+    @Override
+    public boolean onPreferenceClick(Preference preference) {
+        if (mHost != null) {
+            mHost.showWifiDialog((AccessPointPreference) preference);
+        }
+        return false;
+    }
+
+    @Override
+    public void onSuccess() {
+        postRefreshSavedAccessPoints();
+    }
+
+    @Override
+    public void onFailure(int reason) {
+        postRefreshSavedAccessPoints();
+    }
+
+    @VisibleForTesting
+    void refreshSavedAccessPoints() {
+        if (mPreferenceGroup == null) {
+            Log.w(TAG, "PreferenceGroup is null, skipping.");
+            return;
+        }
+        final Context prefContext = mPreferenceGroup.getContext();
+
+        final List<AccessPoint> accessPoints =
+                WifiSavedConfigUtils.getAllConfigs(mContext, mWifiManager);
+        Collections.sort(accessPoints, SavedNetworkComparator.INSTANCE);
+        mChildrenCache.cacheRemoveAllPrefs(mPreferenceGroup);
+
+        final int accessPointsSize = accessPoints.size();
+        for (int i = 0; i < accessPointsSize; ++i) {
+            AccessPoint ap = accessPoints.get(i);
+            String key = ap.getKey();
+            AccessPointPreference preference =
+                    (AccessPointPreference) mChildrenCache.getCachedPreference(key);
+            if (preference == null) {
+                preference = new AccessPointPreference(ap, prefContext, mUserBadgeCache, true);
+                preference.setKey(key);
+                preference.setIcon(null);
+                preference.setOnPreferenceClickListener(this);
+                mPreferenceGroup.addPreference(preference);
+            }
+            preference.setOrder(i);
+        }
+
+        mChildrenCache.removeCachedPrefs(mPreferenceGroup);
+
+        if (mPreferenceGroup.getPreferenceCount() < 1) {
+            Log.w(TAG, "Saved networks activity loaded, but there are no saved networks!");
+        }
+    }
 }