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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.tv.settings.connectivity.setup;
     18 
     19 import android.annotation.Nullable;
     20 import android.app.Activity;
     21 import android.content.res.Resources;
     22 import android.os.Bundle;
     23 import android.support.v17.leanback.app.GuidedStepSupportFragment;
     24 import android.support.v17.leanback.widget.GuidanceStylist;
     25 import android.support.v17.leanback.widget.GuidedActionsStylist;
     26 import android.support.v17.leanback.widget.VerticalGridView;
     27 import android.view.LayoutInflater;
     28 import android.view.View;
     29 import android.view.ViewGroup;
     30 
     31 import com.android.tv.settings.R;
     32 import com.android.tv.settings.connectivity.util.GuidedActionsAlignUtil;
     33 
     34 
     35 /**
     36  * Subclass of {@link GuidedStepSupportFragment} used in settings wifi setup.
     37  */
     38 public class WifiConnectivityGuidedStepFragment extends GuidedStepSupportFragment {
     39 
     40     @Override
     41     protected void onProvideFragmentTransitions() {
     42         setEnterTransition(null);
     43         setExitTransition(null);
     44     }
     45 
     46     @Override
     47     public GuidanceStylist onCreateGuidanceStylist() {
     48         return new GuidanceStylist() {
     49             @Override
     50             public int onProvideLayoutId() {
     51                 return R.layout.wifi_content;
     52             }
     53         };
     54     }
     55 
     56     @Override
     57     public GuidedActionsStylist onCreateActionsStylist() {
     58         return new GuidedActionsStylist() {
     59             @Override
     60             public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
     61                 LayoutInflater inflater = LayoutInflater.from(parent.getContext());
     62                 View v = inflater.inflate(onProvideItemLayoutId(viewType), parent, false);
     63                 return new GuidedActionsAlignUtil.SetupViewHolder(v);
     64             }
     65         };
     66     }
     67 
     68     /**
     69      * Get resources safely.
     70      *
     71      * @return resources.
     72      */
     73     @Nullable
     74     public Resources getResourcesSafely() {
     75         final Activity activity = getActivity();
     76         if (activity == null || activity.isFinishing()) {
     77             return null;
     78         }
     79         return activity.getResources();
     80     }
     81 
     82     @Override
     83     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     84             Bundle savedInstanceState) {
     85         View view = super.onCreateView(inflater, container, savedInstanceState);
     86         // action_fragment_root's padding cannot be set via attributes so we do it programmatically.
     87         final View actionFragmentRoot = view.findViewById(R.id.action_fragment_root);
     88         if (actionFragmentRoot != null) {
     89             actionFragmentRoot.setPadding(0, 0, 0, 0);
     90         }
     91         final Resources resources = getResourcesSafely();
     92         if (resources == null) {
     93             return view;
     94         }
     95 
     96         final VerticalGridView gridView = getGuidedActionsStylist().getActionsGridView();
     97         gridView.setItemSpacing(
     98                 resources.getDimensionPixelSize(R.dimen.setup_list_item_margin));
     99         GuidedActionsAlignUtil.align(getGuidedActionsStylist());
    100         return view;
    101     }
    102 }
    103