package com.mwerner.mycalc.finance;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;

public class F_NPV extends Fragment {
    int i = 0;
    EditText r = (EditText) getActivity().findViewById(R.id.npv_rate);
    Button calc = (Button) getActivity().findViewById(R.id.npv_calc);
    EditText[] DynamicField = new EditText[16];

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        return inflater.inflate(R.layout.npv, container, false);
    }

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

        final LinearLayout linearLayout = (LinearLayout) getActivity()
                .findViewById(R.id.npv_calcfields);
        EditText editText = new EditText(getActivity());
        editText.setId(i);

        editText.setLayoutParams(new LayoutParams(

        LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
        SeekBar bar = (SeekBar) getActivity().findViewById(R.id.npv_seekbar);
        final TextView selection = (TextView) getActivity().findViewById(
                R.id.npv_selected);

        bar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

            public void onProgressChanged(SeekBar seekbar, int progress,
                    boolean fromUser) {
                selection.setText("You have selcted " + progress + " periods.");
                if (progress == 0) {
                    String normalstring = getActivity().getResources()
                            .getString(R.string.npv1);
                    selection.setText(normalstring);

                }
                if (i > progress) {
                    while (i > progress) {
                        i--;
                        EditText editText = (EditText) getActivity()
                                .findViewById(i);
                        linearLayout.removeView(editText);
                    }

                } else {
                    while (i < progress) {
                        EditText editText = new EditText(getActivity());
                        editText.setId(i);
                        editText.setLayoutParams(new LayoutParams(
                                LayoutParams.FILL_PARENT,
                                LayoutParams.WRAP_CONTENT));
                        linearLayout.addView(editText);
                        editText.setHint("Cash Flow " + i);
                        i++;
                    }

                }
            }

            public void onStopTrackingTouch(SeekBar arg0) {
            }

            public void onStartTrackingTouch(SeekBar arg0) {
            }
        });

        calc.setOnClickListener(new OnClickListener() {

            public void onClick(View arg0) {
                Double r1 = Double.parseDouble(r.getText().toString());
                EditText editText = (EditText) getActivity().findViewById(i);
                TextView answer = (TextView) getActivity().findViewById(
                        R.id.npv_answer);
                double[] CashFlows;
                CashFlows = new double[i];
                double result = 0;
                CashFlows[i] = (Double.parseDouble(editText.getText()
                        .toString())) / (Math.pow(1 + r1, i));

                for (double d : CashFlows) {
                    result += d;
                }
                answer.setText("answer is " + result);

            }
        });

    }
}