Fix double search icon in wifi calling page

- Moved fragments into wifi sub-package.
- Cleaned up inheritance for WifiCallingSettings
- Attach help and search action menu controller correctly.

Change-Id: I0bc8ab99df5d8c5ea64fb64de5ae70c2c9bd6f31
Fixes: 72958674
Test: robotest

src/com/android/settings/wifi/calling/WifiCallingSettings.java

@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2015 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.settings.wifi.calling;
+
+import android.app.Fragment;
+import android.app.FragmentManager;
+import android.os.Bundle;
+import android.support.v13.app.FragmentPagerAdapter;
+import android.telephony.SubscriptionInfo;
+import android.telephony.SubscriptionManager;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.android.ims.ImsManager;
+import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
+import com.android.settings.R;
+import com.android.settings.core.InstrumentedFragment;
+import com.android.settings.search.actionbar.SearchMenuController;
+import com.android.settings.support.actionbar.HelpMenuController;
+import com.android.settings.support.actionbar.HelpResourceProvider;
+import com.android.settings.widget.RtlCompatibleViewPager;
+import com.android.settings.widget.SlidingTabLayout;
+
+import java.util.List;
+
+/**
+ * "Wi-Fi Calling settings" screen. This is the container fragment which holds
+ * {@link WifiCallingSettingsForSub} fragments.
+ */
+public class WifiCallingSettings extends InstrumentedFragment implements HelpResourceProvider {
+    private static final String TAG = "WifiCallingSettings";
+    private List<SubscriptionInfo> mSil;
+
+    //UI objects
+    private RtlCompatibleViewPager mViewPager;
+    private WifiCallingViewPagerAdapter mPagerAdapter;
+    private SlidingTabLayout mTabLayout;
+
+    @Override
+    public int getMetricsCategory() {
+        return MetricsEvent.WIFI_CALLING;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+            Bundle savedInstanceState) {
+        final View view = inflater.inflate(R.layout.wifi_calling_settings_tabs, container, false);
+
+        mTabLayout = view.findViewById(R.id.sliding_tabs);
+        mViewPager = (RtlCompatibleViewPager) view.findViewById(R.id.view_pager);
+
+        mPagerAdapter = new WifiCallingViewPagerAdapter(getChildFragmentManager(), mViewPager);
+        mViewPager.setAdapter(mPagerAdapter);
+
+        return view;
+    }
+
+    @Override
+    public void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+        setHasOptionsMenu(true);
+        SearchMenuController.init(this /* host */);
+        HelpMenuController.init(this /* host */);
+
+        // TODO: besides in onCreate, we should also update subList when SIM / Sub status
+        // changes.
+        updateSubList();
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+
+        if (mSil != null && mSil.size() > 1) {
+            mTabLayout.setViewPager(mViewPager);
+        } else {
+            mTabLayout.setVisibility(View.GONE);
+        }
+    }
+
+    @Override
+    public int getHelpResource() {
+        return R.string.help_uri_wifi_calling;
+    }
+
+    private final class WifiCallingViewPagerAdapter extends FragmentPagerAdapter {
+        private final RtlCompatibleViewPager mViewPager;
+
+        public WifiCallingViewPagerAdapter(FragmentManager fragmentManager,
+                RtlCompatibleViewPager viewPager) {
+            super(fragmentManager);
+            mViewPager = viewPager;
+        }
+
+        @Override
+        public CharSequence getPageTitle(int position) {
+            return String.valueOf(mSil.get(position).getDisplayName());
+        }
+
+        @Override
+        public Fragment getItem(int position) {
+            Log.d(TAG, "Adapter getItem " + position);
+            final Bundle args = new Bundle();
+            args.putBoolean(SearchMenuController.NEED_SEARCH_ICON_IN_ACTION_BAR, false);
+            args.putInt(WifiCallingSettingsForSub.FRAGMENT_BUNDLE_SUBID,
+                    mSil.get(position).getSubscriptionId());
+            WifiCallingSettingsForSub fragment = new WifiCallingSettingsForSub();
+            fragment.setArguments(args);
+
+            return fragment;
+        }
+
+        @Override
+        public Object instantiateItem(ViewGroup container, int position) {
+            Log.d(TAG, "Adapter instantiateItem " + position);
+            return super.instantiateItem(container,
+                    mViewPager.getRtlAwareIndex(position));
+        }
+
+        @Override
+        public int getCount() {
+            if (mSil == null) {
+                Log.d(TAG, "Adapter getCount null mSil ");
+                return 0;
+            } else {
+                Log.d(TAG, "Adapter getCount " + mSil.size());
+                return mSil.size();
+            }
+        }
+    }
+
+    private void updateSubList() {
+        mSil = SubscriptionManager.from(getActivity()).getActiveSubscriptionInfoList();
+
+        // Only config Wfc if it's enabled by platform.
+        if (mSil == null) {
+            return;
+        }
+        for (int i = 0; i < mSil.size(); ) {
+            ImsManager imsManager = ImsManager.getInstance(getActivity(),
+                    mSil.get(i).getSimSlotIndex());
+            if (!imsManager.isWfcEnabledByPlatform()) {
+                mSil.remove(i);
+            } else {
+                i++;
+            }
+        }
+    }
+}