com.nomprenom2.view.NameParamsFragment.java Source code

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Here is the source code for com.nomprenom2.view.NameParamsFragment.java

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/*
 * created by Pavel Golubev golubev.pavel.spb@gmail.com
 * no license applied
 * You may use this file without any restrictions
 */

package com.nomprenom2.view;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Spinner;
import com.nomprenom2.R;
import com.nomprenom2.utils.NothingSelectedSpinnerAdapter;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;

/**
 * Incapsulates name parameters fields
 */
public class NameParamsFragment extends Fragment implements FragmentItem.OnFragmentInteractionListener {
    public HashSet<String> regions;
    private boolean single_sel = false;
    private Spinner sex_spinner;
    private Spinner zod_spinner;
    private List<WeakReference<Fragment>> frag_list;

    /**
     * Instantinates fragment
     * @return
     */
    public static NameParamsFragment newInstance() {
        return new NameParamsFragment();
    }

    public NameParamsFragment() {
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

    /**
     * Returns selected gender ordinal
     * @return
     */
    public Integer getSelectedSex() {
        return sex_spinner.getSelectedItemPosition();
    }

    /**
     * Returns selected zodiac ordinal
     * @return
     */
    public Integer getSelectedZod() {
        return zod_spinner.getSelectedItemPosition();
    }

    /**
     * Sets single selection mode for region list
     * @param bsingle
     */
    public void setSingleSel(boolean bsingle) {
        single_sel = bsingle;
    }

    /**
     * Constructs fragment view, sets fields and click listener
     * @param inflater
     * @param container
     * @param savedInstanceState
     * @return
     */
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.fragment_name_params, container, false);
        // TODO: Move non-ui data to presenter layer
        String[] sex_sel = getResources().getStringArray(R.array.sex_sels);
        ArrayAdapter<String> adapter = new ArrayAdapter<>(getActivity(), android.R.layout.simple_spinner_item,
                sex_sel);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        sex_spinner = (Spinner) v.findViewById(R.id.sex_spinner);
        sex_spinner.setAdapter(new NothingSelectedSpinnerAdapter(adapter,
                R.layout.contact_spinner_row_nothing_selected, getActivity()));
        // zodiac spinner
        String[] zod_sel = getResources().getStringArray(R.array.zod_sels);
        ArrayAdapter<String> zod_adapter = new ArrayAdapter<>(getActivity(), android.R.layout.simple_spinner_item,
                zod_sel);
        zod_adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        zod_spinner = (Spinner) v.findViewById(R.id.zodiac_spinner);
        zod_spinner.setAdapter(new NothingSelectedSpinnerAdapter(zod_adapter,
                R.layout.zodiac_spinner_row_nothing_selected, getActivity()));

        regions = new HashSet<>();
        frag_list = new ArrayList<>();
        if (savedInstanceState != null)
            setGroupList();

        Button regs = (Button) v.findViewById(R.id.select_region_button);
        regs.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                NameParamsFragment.this.selectRegion();
            }
        });
        return v;
    }

    /**
     * Fills region view with fragments: adds selected and deletes deselected
     */
    private void setGroupList() {
        View v = getView();
        if (v != null && v.findViewById(R.id.fragment_container) != null) {
            HashSet<String> regs = new HashSet<>();
            regs.addAll(regions); // copy regions set for processing
            FragmentManager mngr = getFragmentManager();
            FragmentTransaction tr = mngr.beginTransaction();
            Fragment fr;
            // clear fragments not in region list
            Iterator<WeakReference<Fragment>> it = frag_list.iterator();
            while (it.hasNext()) {
                WeakReference<Fragment> f = it.next();
                fr = f.get();
                if (fr != null) {
                    String tg = fr.getTag();
                    if (!regs.contains(tg)) {
                        tr.remove(fr);
                        it.remove(); // remove deleted region from fragments list
                    } else {
                        regs.remove(tg); // remove processed region
                    }
                }
            }
            // add remained regions
            for (String s : regs) {
                fr = FragmentItem.newInstance(s, this);
                tr.add(R.id.fragment_container, fr, s);
                frag_list.add(new WeakReference<>(fr));
            }
            tr.commit();
        }
    }

    /**
     * Receives result from select region activity, apply new regions list
     * @param requestCode
     * @param resultCode
     * @param data
     */
    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode == Activity.RESULT_OK && requestCode == MainActivity.GROUP_REQUEST) {
            regions.clear();
            if (data.hasExtra(MainActivity.REGIONS)) {
                regions.addAll(data.getStringArrayListExtra(MainActivity.REGIONS));
            }
            setGroupList();
        }
    }

    /**
     * Calls select regions activity for current region list (can be empty)
     */
    private void selectRegion() {
        Intent intent = new Intent(getActivity(), SelectedRegionActivity.class);
        if (!regions.isEmpty()) {
            String[] sa = new String[regions.size()];
            regions.toArray(sa);
            intent.putExtra(MainActivity.REGIONS, sa);
        }
        intent.putExtra(MainActivity.SINGLE_REGION, single_sel);
        startActivityForResult(intent, MainActivity.GROUP_REQUEST);
    }

    /**
     * processe fragment item remove
     * @param frag_name
     */
    public void onFragmentInteraction(String frag_name) {
        FragmentManager mngr = getFragmentManager();
        FragmentTransaction tr = mngr.beginTransaction();
        Fragment fr = mngr.findFragmentByTag(frag_name);
        if (fr != null) {
            tr.remove(fr);
            regions.remove(frag_name);
        }
        tr.commit();
    }

}