BartRunnerAndroid/src/com/dougkeen/bart/AbstractRouteSelectionFragment.java

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package com.dougkeen.bart;
import android.app.Dialog;
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import android.content.Context;
import android.content.DialogInterface;
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import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.FragmentActivity;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.Toast;
import com.WazaBe.HoloEverywhere.AlertDialog;
import com.dougkeen.bart.model.Station;
public abstract class AbstractRouteSelectionFragment extends DialogFragment {
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private static final String KEY_LAST_SELECTED_DESTINATION = "lastSelectedDestination";
private static final String KEY_LAST_SELECTED_ORIGIN = "lastSelectedOrigin";
protected String mTitle;
public AbstractRouteSelectionFragment(String title) {
super();
mTitle = title;
}
@Override
public void onStart() {
super.onStart();
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SharedPreferences preferences = getActivity().getPreferences(
Context.MODE_PRIVATE);
final int lastSelectedOriginPosition = preferences.getInt(
KEY_LAST_SELECTED_ORIGIN, 0);
final int lastSelectedDestinationPosition = preferences.getInt(
KEY_LAST_SELECTED_DESTINATION, 1);
final Dialog dialog = getDialog();
final FragmentActivity activity = getActivity();
ArrayAdapter<Station> originSpinnerAdapter = new ArrayAdapter<Station>(
activity, android.R.layout.simple_spinner_item,
Station.getStationList());
originSpinnerAdapter
.setDropDownViewResource(R.layout.simple_spinner_dropdown_item);
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final Spinner originSpinner = (Spinner) dialog
.findViewById(R.id.origin_spinner);
originSpinner.setAdapter(originSpinnerAdapter);
originSpinner.setSelection(lastSelectedOriginPosition);
ArrayAdapter<Station> destinationSpinnerAdapter = new ArrayAdapter<Station>(
activity, android.R.layout.simple_spinner_item,
Station.getStationList());
destinationSpinnerAdapter
.setDropDownViewResource(R.layout.simple_spinner_dropdown_item);
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final Spinner destinationSpinner = (Spinner) dialog
.findViewById(R.id.destination_spinner);
destinationSpinner.setAdapter(destinationSpinnerAdapter);
destinationSpinner.setSelection(lastSelectedDestinationPosition);
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final FragmentActivity activity = getActivity();
return new AlertDialog.Builder(activity)
.setTitle(mTitle)
.setCancelable(true)
.setView(R.layout.route_form)
.setPositiveButton(R.string.ok,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
handleOkClick();
}
})
.setNegativeButton(R.string.cancel,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int whichButton) {
dialog.cancel();
}
}).create();
}
protected void handleOkClick() {
final Dialog dialog = getDialog();
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final Spinner originSpinner = (Spinner) dialog
.findViewById(R.id.origin_spinner);
final Spinner destinationSpinner = (Spinner) dialog
.findViewById(R.id.destination_spinner);
Station origin = (Station) originSpinner.getSelectedItem();
Station destination = (Station) destinationSpinner.getSelectedItem();
if (origin == null) {
Toast.makeText(dialog.getContext(),
com.dougkeen.bart.R.string.error_null_origin,
Toast.LENGTH_LONG).show();
return;
}
if (destination == null) {
Toast.makeText(dialog.getContext(),
com.dougkeen.bart.R.string.error_null_destination,
Toast.LENGTH_LONG).show();
return;
}
if (origin.equals(destination)) {
Toast.makeText(
dialog.getContext(),
com.dougkeen.bart.R.string.error_matching_origin_and_destination,
Toast.LENGTH_LONG).show();
return;
}
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final Editor prefsEditor = getActivity().getPreferences(
Context.MODE_PRIVATE).edit();
prefsEditor.putInt(KEY_LAST_SELECTED_ORIGIN,
originSpinner.getSelectedItemPosition());
prefsEditor.putInt(KEY_LAST_SELECTED_DESTINATION,
destinationSpinner.getSelectedItemPosition());
prefsEditor.commit();
onOkButtonClick(origin, destination);
}
abstract protected void onOkButtonClick(Station origin, Station destination);
}