com.lloydtorres.stately.census.DatasetDialog.java Source code

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Here is the source code for com.lloydtorres.stately.census.DatasetDialog.java

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/**
 * Copyright 2016 Lloyd Torres
 *
 * 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.lloydtorres.stately.census;

import android.app.Dialog;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v7.app.AppCompatDialog;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.lloydtorres.stately.R;
import com.lloydtorres.stately.dto.Dataset;

import java.util.ArrayList;

/**
 * Created by Lloyd on 2016-04-10.
 * A dialog showing the available trend datasets.
 */
public class DatasetDialog extends DialogFragment {
    public static final String DIALOG_TAG = "fragment_dataset_dialog";
    public static final String DATASETS_KEY = "datasets";

    // RecyclerView variables
    private RecyclerView mRecyclerView;
    private RecyclerView.LayoutManager mLayoutManager;
    private RecyclerView.Adapter mRecyclerAdapter;

    private ArrayList<Dataset> datasets;

    public void setDatasets(String[] rawDataset, int selected) {
        datasets = new ArrayList<Dataset>();

        for (int i = 0; i < rawDataset.length - 1; i++) {
            Dataset d = new Dataset();
            d.name = rawDataset[i].split("##")[0];
            d.id = i;
            d.selected = false;
            datasets.add(d);
        }

        if (selected < rawDataset.length - 1) {
            datasets.get(selected).selected = true;
        }
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // Restore state
        if (savedInstanceState != null && datasets == null) {
            datasets = savedInstanceState.getParcelable(DATASETS_KEY);
        }

        AppCompatDialog dialog = null;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            dialog = new AppCompatDialog(getActivity(), R.style.AlertDialogCustom);
        } else {
            dialog = new AppCompatDialog(getActivity(), R.style.MaterialDialog);
        }
        dialog.setCanceledOnTouchOutside(true);
        return dialog;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_dialog_recycler, container, false);

        getDialog().setTitle(getString(R.string.trends_datasets));
        initRecycler(view);

        return view;
    }

    private void initRecycler(View view) {
        mRecyclerView = (RecyclerView) view.findViewById(R.id.recycler_padded);
        mRecyclerView.setHasFixedSize(true);
        mLayoutManager = new LinearLayoutManager(getContext());
        mRecyclerView.setLayoutManager(mLayoutManager);
        mRecyclerAdapter = new DatasetRecyclerAdapter(getActivity(), this, datasets);
        mRecyclerView.setAdapter(mRecyclerAdapter);

        int position = ((DatasetRecyclerAdapter) mRecyclerAdapter).getSelectedPosition();
        if (position != DatasetRecyclerAdapter.INVALID_POSITION) {
            mLayoutManager.scrollToPosition(position);
        }
    }

    @Override
    public void onSaveInstanceState(Bundle savedInstanceState) {
        // Save state
        super.onSaveInstanceState(savedInstanceState);
        if (datasets != null) {
            savedInstanceState.putParcelableArrayList(DATASETS_KEY, datasets);
        }
    }
}