Display setting and support in a tab layout - DO NOT MERGE

Bug: 28269035
Bug: 28139604

src/com/android/settings/dashboard/DashboardContainerFragment.java

@@ -0,0 +1,136 @@
+/*
+ * 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.settings.dashboard;
+
+import android.app.Activity;
+import android.app.Fragment;
+import android.app.FragmentManager;
+import android.content.Context;
+import android.os.Bundle;
+import android.support.v13.app.FragmentPagerAdapter;
+import android.support.v4.view.ViewPager;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.android.settings.InstrumentedFragment;
+import com.android.settings.R;
+import com.android.settings.overlay.FeatureFactory;
+import com.android.settings.overlay.SupportFeatureProvider;
+import com.android.settings.widget.SlidingTabLayout;
+import com.android.settingslib.drawer.SettingsDrawerActivity;
+import com.android.settingslib.HelpUtils;
+
+/**
+ * Container for Dashboard fragments.
+ */
+public final class DashboardContainerFragment extends InstrumentedFragment {
+
+    private static final int INDEX_SUMMARY_FRAGMENT = 0;
+    private static final int INDEX_SUPPORT_FRAGMENT = 1;
+
+    private ViewPager mViewPager;
+    private View mHeaderView;
+    private DashboardViewPagerAdapter mPagerAdapter;
+
+    @Override
+    protected int getMetricsCategory() {
+        return DASHBOARD_CONTAINER;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setHasOptionsMenu(true);
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState) {
+        final View content = inflater.inflate(R.layout.dashboard_container, parent, false);
+        mViewPager = (ViewPager) content.findViewById(R.id.pager);
+        mPagerAdapter = new DashboardViewPagerAdapter(getContext(), getChildFragmentManager());
+        mViewPager.setAdapter(mPagerAdapter);
+        mHeaderView = inflater.inflate(R.layout.dashboard_container_header, parent, false);
+        ((SlidingTabLayout) mHeaderView).setViewPager(mViewPager);
+        return content;
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        if (mPagerAdapter.getCount() > 1) {
+            final Activity activity = getActivity();
+            if (activity instanceof SettingsDrawerActivity) {
+                ((SettingsDrawerActivity) getActivity()).setContentHeaderView(mHeaderView);
+            }
+        }
+    }
+
+    @Override
+    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+        super.onCreateOptionsMenu(menu, inflater);
+        if (getActivity() == null) return;
+        HelpUtils.prepareHelpMenuItem(getActivity(), menu, R.string.help_uri_dashboard,
+                getClass().getName());
+    }
+
+    private static final class DashboardViewPagerAdapter extends FragmentPagerAdapter {
+
+        private final Context mContext;
+        private final SupportFeatureProvider mSupportFeatureProvider;
+
+        public DashboardViewPagerAdapter(Context context, FragmentManager fragmentManager) {
+            super(fragmentManager);
+            mContext = context;
+            mSupportFeatureProvider =
+                    FeatureFactory.getFactory(context).getSupportFeatureProvider();
+        }
+
+        @Override
+        public CharSequence getPageTitle(int position) {
+            switch (position) {
+                case INDEX_SUMMARY_FRAGMENT:
+                    return mContext.getString(R.string.page_tab_title_summary);
+                case INDEX_SUPPORT_FRAGMENT:
+                    return mContext.getString(R.string.page_tab_title_support);
+            }
+            return super.getPageTitle(position);
+        }
+
+        @Override
+        public Fragment getItem(int position) {
+            switch (position) {
+                case INDEX_SUMMARY_FRAGMENT:
+                    return new DashboardSummary();
+                case INDEX_SUPPORT_FRAGMENT:
+                    return new SupportFragment();
+                default:
+                    throw new IllegalArgumentException(
+                            String.format(
+                                    "Position %d does not map to a valid dashboard fragment",
+                                    position));
+            }
+        }
+
+        @Override
+        public int getCount() {
+            return mSupportFeatureProvider == null ? 1 : 2;
+        }
+    }
+}