TopupResult.java :  » App » gasmixer » divestoclimb » gasmixer » Android Open Source

package divestoclimb.gasmixer;

import java.text.NumberFormat;

import divestoclimb.gasmixer.prefs.SyncedPrefsHelper;
import divestoclimb.lib.scuba.Cylinder;
import divestoclimb.lib.scuba.GasSupply;
import divestoclimb.lib.scuba.Localizer;
import divestoclimb.lib.scuba.Mix;
import divestoclimb.lib.scuba.Units;
import divestoclimb.scuba.equipment.storage.CylinderORMapper;

import android.app.Activity;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.View;
import android.widget.CompoundButton;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ToggleButton;

/**
 * Frontend for GasSupply's topup capabilities.
 * @author Ben Roberts (divestoclimb@gmail.com)
 */
public class TopupResult extends Activity implements CompoundButton.OnCheckedChangeListener,
    View.OnClickListener {

  private Mix mResult;
  private TextView mFinalMOD, mFinalEADENDLabel, mFinalEADEND;
  private ToggleButton mTogglePo2;
  
  // Cached storage of preferences
  private boolean mO2IsNarcotic;
  private float mPo2Low, mPo2High;
  
  private Units mUnits;

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

    setContentView(R.layout.topup_result);

    SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this),
        state = getSharedPreferences(Params.STATE_NAME, 0);

    int unit;
    if(settings.contains("units")) {
      // Android issue 2096 - ListPreference won't work with an integer
      // array for values. Unit values are being stored as Strings then
      // we convert them here for use.
      unit = Integer.valueOf(settings.getString("units", "0"));
    } else {
      Cursor c = new SyncedPrefsHelper(this).findSetValue("units");
      unit = c == null? 0: Integer.valueOf(c.getString(c.getColumnIndexOrThrow("units")));
      settings.edit().putString("units", Integer.toString(unit)).commit();
    }
    mUnits = new Units(unit);

    // Set the Localizer Engine for displaying GasSources
    Localizer.setEngine(new AndroidLocalizer(this));

    // Gas computation options
    mPo2Low = settings.getFloat("max_norm_po2", 1.4f);
    mPo2High = settings.getFloat("max_hi_po2", 1.6f);
    mO2IsNarcotic = settings.getBoolean("o2_is_narcotic", true);

    Mix topup = TrimixPreference.stringToMix(settings.getString("topup_gas", "0.21 0"));
    if(topup == null) {
      // Not sure how this happens, but to someone it did
      topup = new Mix(0.21f, 0);
      Toast.makeText(this, R.string.topup_read_error, Toast.LENGTH_LONG);
    }

    boolean real = settings.getBoolean("vdw", false);
    Cylinder c = null;
    CylinderORMapper com = null;
    if(real) {
      com = new CylinderORMapper(this, mUnits);
      c = com.fetchCylinder(state.getLong("cylinderid", -1));
    }
    if(! real || c == null) {
      c = new Cylinder(mUnits, mUnits.volumeNormalTank(), (int)mUnits.pressureTankFull());
    }
    GasSupply fill = new GasSupply(c,
        new Mix(state.getFloat("topup_start_o2", 0.21f), state.getFloat("topup_start_he", 0)),
        (int)state.getFloat("topup_start_pres", 0),
        ! real,
        mUnits.convertAbsTemp(settings.getFloat("temperature", 294), Units.METRIC)
    );
    mResult = fill.topup(topup, (int)state.getFloat("topup_final_pres", 0)).getMix();

    String resultText = String.format(getString(R.string.topup_result), mResult.toString());

    TextView resultView = (TextView) findViewById(R.id.result);
    resultView.setText(resultText);
    TextView reminder1View = (TextView) findViewById(R.id.reminder1);
    reminder1View.setText(String.format(getString(R.string.topup_reminder),
        topup.toString()
    ));
    TextView reminder2View = (TextView) findViewById(R.id.reminder2);
    reminder2View.setText(getString(R.string.analyze_warning));

    mFinalMOD = (TextView)findViewById(R.id.mod);
    mFinalEADENDLabel = (TextView)findViewById(R.id.ead_end_label);
    mFinalEADEND = (TextView)findViewById(R.id.ead_end);
    mTogglePo2 = (ToggleButton)findViewById(R.id.button_po2_hi);

    updateModEnd();

    mTogglePo2.setOnCheckedChangeListener(this);
    findViewById(R.id.button_close).setOnClickListener(this);
  }

  private void updateModEnd() {
    final Units u = mUnits;
    final NumberFormat nf = NumberFormat.getIntegerInstance();
    float mod = mResult.MOD(u, mTogglePo2.isChecked()? mPo2High: mPo2Low);
    final String depthUnit = getString(u.depthUnit() == Units.IMPERIAL? R.string.depth_imperial: R.string.depth_metric);
    mFinalMOD.setText(nf.format(mod) + " " + depthUnit);
    if(mResult.getHe() > 0) {
      mFinalEADENDLabel.setText(getResources().getString(R.string.end));
      mFinalEADEND.setText(nf.format(mResult.END(Math.round(mod), u, mO2IsNarcotic)) + " " + depthUnit);
    } else {
      mFinalEADENDLabel.setText(getResources().getString(R.string.ead));
      mFinalEADEND.setText(nf.format(mResult.EAD(Math.round(mod), u)) + " " + depthUnit);
    }
  }
  
  public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
    updateModEnd();
  }
  
  public void onClick(View v) {
    finish();
  }
}