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

package divestoclimb.gasmixer;

import divestoclimb.android.widget.BaseNumberSelector;
import divestoclimb.gasmixer.prefs.SyncedPrefsHelper;
import divestoclimb.lib.scuba.Cylinder;
import divestoclimb.lib.scuba.Mix;
import divestoclimb.lib.scuba.Units;
import divestoclimb.scuba.equipment.storage.CylinderORMapper;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

/**
 * Show and edit the starting mix, pressure, and cylinder from the state.
 * @author Ben Roberts (divestoclimb@gmail.com)
 */
public class SetStarting extends Activity implements Button.OnClickListener {

  private BaseNumberSelector mPressureSelector;
  private TextView mPressureUnit, mCylinderDescription;
  private TrimixSelector mGasSelector;
  private SharedPreferences mSettings, mState;
  private Units mUnits;
  private CylinderORMapper mCylORMapper;

  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setTitle(R.string.starting);

    mSettings = PreferenceManager.getDefaultSharedPreferences(this);
    mState = getSharedPreferences(Params.STATE_NAME, 0);
    
    if(mSettings.getBoolean("vdw", false)) {
      setContentView(R.layout.set_start_cylinder);
    } else {
      setContentView(R.layout.set_start);
    }

    int unit;
    if(mSettings.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(mSettings.getString("units", "0"));
    } else {
      Cursor c = new SyncedPrefsHelper(this).findSetValue("units");
      unit = c == null? 0: Integer.valueOf(c.getString(c.getColumnIndexOrThrow("units")));
      mSettings.edit().putString("units", Integer.toString(unit)).commit();
    }
    mUnits = new Units(unit);

    mCylORMapper = new CylinderORMapper(this, mUnits);

    mPressureSelector = (BaseNumberSelector)findViewById(R.id.pressure);
    mPressureUnit = (TextView)findViewById(R.id.pressure_unit);
    mGasSelector = (TrimixSelector)findViewById(R.id.mix);
    mCylinderDescription = (TextView)findViewById(R.id.cylinder);

    Button button = (Button)findViewById(R.id.button);
    button.setOnClickListener(this);

    Button cylinderChangeButton = (Button)findViewById(R.id.cylinder_change);
    if(cylinderChangeButton != null) {
      cylinderChangeButton.setOnClickListener(this);
    }
  }

  @Override
  public void onResume() {
    super.onResume();
    final Units u = mUnits;
    final String pressureUnit = getString(u.pressureUnit() == Units.IMPERIAL? R.string.pres_imperial: R.string.pres_metric);
    mPressureSelector.setDecimalPlaces(0);
    mPressureSelector.setLimits(0f, new Float(u.pressureTankMax()));
    mPressureSelector.setIncrement(new Float(u.pressureIncrement()));
    mPressureSelector.setValue(mState.getFloat("start_pres", 0));
    mPressureUnit.setText(pressureUnit + ":");
    mGasSelector.setMix(new Mix(mState.getFloat("start_o2", 0.21f), mState.getFloat("start_he", 0)));

    if(mCylinderDescription != null) {
      updateCylinder();
    }
  }

  public void onClick(View v) {
    switch(v.getId()) {
    case R.id.button:
      Mix m = mGasSelector.getMix();
      mState.edit()
        .putFloat("start_pres", mPressureSelector.getValue())
        .putFloat("start_o2", (float)m.getfO2())
        .putFloat("start_he", (float)m.getfHe())
        .commit();
      setResult(RESULT_OK);
      finish();
      break;
    case R.id.cylinder_change:
      Intent cylinders = new Intent(Intent.ACTION_GET_CONTENT);
      cylinders.setType("vnd.android.cursor.item/vnd.divestoclimb.scuba.equipment.cylinders.size");
      startActivityForResult(cylinders, 0);
    }
  }

  @Override
  public void onActivityResult(int requestCode, int resultCode, Intent intent) {
    if(resultCode == RESULT_OK) {
      Bundle b = intent.getExtras();
      long id = b.getLong("selected");
      mState.edit().putLong("cylinderid", id).commit();
      updateCylinder();
    }
  }

  private void updateCylinder() {
    final Cylinder c = mCylORMapper.fetchCylinder(mState.getLong("cylinderid", -1));
    if(c != null) {
      mCylinderDescription.setText(c.getName());
    }
  }
}