Android Open Source - Is-It-Here-Yet Data Manager

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From Project

Back to project page Is-It-Here-Yet.

License

The source code is released under:

GNU General Public License

Java Source Code

/**
 * Is It Here Yet? is a simple Android application that reads the
 * NextBus public XML feed and displays the arrival times for
 * transit vehicles for a chosen stop. /*w ww . j a  v  a  2s  . co m*/
 * Copyright (C) 2011 Matthew Lam
 *
 * Is It Here Yet? is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Is It Here Yet? is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Is It Here Yet?.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.sudfiwe.iihy.uiinterface;

import java.util.Arrays;
import java.util.LinkedList;

import com.sudfiwe.iihy.data.Preferences;
import com.sudfiwe.iihy.data.agency.Agency;
import com.sudfiwe.iihy.data.agency.AgencyListProxy;
import com.sudfiwe.iihy.data.agency.IAgencyList;
import com.sudfiwe.iihy.data.predict.IPredictionList;
import com.sudfiwe.iihy.data.route.Route;
import com.sudfiwe.iihy.data.stop.Stop;
import com.sudfiwe.iihy.data.stop.StopDirection;
import com.sudfiwe.iihy.io.DBFacade;
import com.sudfiwe.iihy.io.DBResult;
import com.sudfiwe.iihy.util.Filter;

import android.app.Activity;

public class DataManager {

  private static DataManager instance;

  private Activity activity;
  private Preferences preferences;
  private IAgencyList agencies;

  private String agencyTag;
  private String routeTag;
  private String directionTag;
  private String stopTag;

  public DataManager() {

    agencies=new AgencyListProxy();
  }

  public void setActivity(Activity pAct) {

    activity=pAct;

    Filter f=new Filter();
    f.addEntry(Filter.FilterType.PREF_APPACT,activity);

    DBResult<Preferences> res=(DBResult<Preferences>)
    DBFacade.getInstance().getItem(Preferences.class,f);

    preferences=res.getObject();
  }

  public void savePreferences() {

    Filter f=new Filter();
    f.addEntry(Filter.FilterType.PREF_APPACT,activity);

    preferences.setAgencyTag(agencyTag);
    preferences.setRouteTag(routeTag);
    preferences.setDirectionTag(directionTag);
    preferences.setStopTag(stopTag);

    DBResult<Preferences> res=(DBResult<Preferences>)
    DBFacade.getInstance().saveItem(Preferences.class,
        preferences,f);
  }

  public int getDefaultAgency() {

    Agency[] list=new Agency[0];
    int index=-1;

    String tag=preferences.getAgencyTag();

    if (tag.trim().length()>0) {
      list=agencies.getList();
      index=Arrays.binarySearch(list,new Agency(tag));
    }

    if (index<0||index>=list.length) {
      index=-1;
    } else {
      agencyTag=tag;
    }

    return index;
  }

  public int getDefaultRoute() {

    Route[] list=new Route[0];
    int index=-1;

    String tag=preferences.getRouteTag();

    if (tag.trim().length()>0) {
      list=agencies.getItem(preferences.getAgencyTag())
      .getRoutes().getList();
      index=Arrays.binarySearch(list,new Route(tag));
    }

    if (index<0||index>=list.length) {
      index=-1;
    } else {
      routeTag=tag;
    }

    return index;
  }

  public int getDefaultDirection() {

    StopDirection[] list=new StopDirection[0];
    int index=-1;

    String tag=preferences.getDirectionTag();

    if (tag.trim().length()>0) {
      list=agencies.getItem(preferences.getAgencyTag())
      .getRoutes().getItem(preferences.getRouteTag())
      .getStops().getDirections();
      index=Arrays.binarySearch(list,new StopDirection(tag));
    }

    if (index<0||index>=list.length) {
      index=-1;
    } else {
      directionTag=tag;
    }

    return index;
  }

  public int getDefaultStop() {

    Stop[] list=new Stop[0];
    int index=-1;

    String tag=preferences.getStopTag();

    if (tag.trim().length()>0) {
      list=agencies.getItem(preferences.getAgencyTag())
      .getRoutes().getItem(preferences.getRouteTag())
      .getStops().getList(preferences.getDirectionTag());

      for (int iter=0;iter<list.length&&index==-1;iter++) {

        if (list[iter].getTag().equals(tag)) {
          index=iter;
        }
      }
    }

    if (index<0||index>=list.length) {
      index=-1;
    } else {
      stopTag=tag;
    }

    return index;
  }

  public String[] getAgencyTitles(boolean refreshList) {

    LinkedList<String> list=new LinkedList<String>();

    if (refreshList) {

      agencies.regenerateList();
    }

    for (Agency a:agencies.getList()) {

      list.addLast(a.getTitle());
    }

    return list.toArray(new String[list.size()]);
  }

  public String[] getRouteTitles(int aIndex) {

    agencyTag=agencies.getList()[aIndex].getTag();

    LinkedList<String> list=new LinkedList<String>();

    for (Route r:agencies.getItem(agencyTag)
        .getRoutes().getList()) {

      list.addLast(r.getTitle());
    }

    return list.toArray(new String[list.size()]);
  }

  public String[] getDirectionTitles(int rIndex) {

    routeTag=agencies.getItem(agencyTag).getRoutes()
    .getList()[rIndex].getTag();

    LinkedList<String> list=new LinkedList<String>();

    for (StopDirection sd:agencies.getItem(agencyTag)
        .getRoutes().getItem(routeTag)
        .getStops().getDirections()) {

      list.addLast(sd.getTitle());
    }

    return list.toArray(new String[list.size()]);
  }

  public String[] getStopTitles(int dIndex) {

    directionTag=agencies.getItem(agencyTag).getRoutes()
    .getItem(routeTag).getStops()
    .getDirections()[dIndex].getTag();

    LinkedList<String> list=new LinkedList<String>();

    for (Stop s:agencies.getItem(agencyTag)
        .getRoutes().getItem(routeTag)
        .getStops().getList(directionTag)) {

      list.addLast(s.getTitle());
    }

    return list.toArray(new String[list.size()]);
  }

  public void setStop(int sIndex) {

    stopTag=agencies.getItem(agencyTag).getRoutes()
    .getItem(routeTag).getStops()
    .getList(directionTag)[sIndex].getTag();
  }

  public boolean hasAgencyChanged(int aIndex) {

    return !agencies.getList()[aIndex].getTag()
    .equals(agencyTag);
  }

  public boolean hasRouteChanged(int rIndex) {

    return !agencies.getItem(agencyTag).getRoutes()
    .getList()[rIndex].getTag().equals(routeTag);
  }

  public boolean hasDirectionChanged(int dIndex) {

    return !agencies.getItem(agencyTag).getRoutes()
    .getItem(routeTag).getStops()
    .getDirections()[dIndex].getTag().equals(directionTag);
  }
  
  public boolean hasStopChanged(int sIndex) {

    return !agencies.getItem(agencyTag).getRoutes()
    .getItem(routeTag).getStops()
    .getList(directionTag)[sIndex].equals(stopTag);
  }

  public String getAgencyName() {

    return agencies.getItem(agencyTag).getTitle();
  }

  public String getRouteName() {

    return agencies.getItem(agencyTag)
    .getRoutes().getItem(routeTag)
    .getTitle();
  }

  public String getDirectionName() {

    return agencies.getItem(agencyTag)
    .getRoutes().getItem(routeTag).getStops()
    .getDirection(directionTag).getTitle();
  }

  public String getStopName() {

    return agencies.getItem(agencyTag)
    .getRoutes().getItem(routeTag).getStops()
    .getItem(directionTag,stopTag).getTitle();
  }

  public IPredictions getPredictions() {

    IPredictionList list=agencies.getItem(agencyTag)
    .getRoutes().getItem(routeTag).getStops()
    .getItem(directionTag,stopTag).getPredictions();

    list.regenerateList(directionTag);

    return list;
  }

  public static DataManager getInstance() {

    if (instance==null) {

      instance=new DataManager();
    }

    return instance;
  }
}

Java Source Code List

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