Android Open Source - opscal Schedule Adapter

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License

The source code is released under:

Copyright (c) 2013 by Philip Nelson Some rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are me...

Java Source Code

package ca.pnelson.opscal;
/*from   ww w .  ja  v  a2s. c  o  m*/
import java.util.ArrayList;
import java.util.GregorianCalendar;

import android.content.Context;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;

public class ScheduleAdapter extends BaseAdapter
{
  private ScheduleActivity mContext;
  private ArrayList<Date> mSchedule;
  
  private static final int[] DAYS_BEFORE_MONTH = {0, 31, 59, 90, 120, 151, 181,
    212, 243, 273, 304, 334};
  
  private static final byte[] PATTERN = {
    0, 0, 0, 0, 2, 2, 2,
    2, 0, 0, 0, 2, 2, 2,
    2, 0, 0, 0, 1, 1, 1,
    1, 0, 0, 0, 1, 1, 1,
    1, 2, 2, 2, 0, 0, 0,
    0, 2, 2, 2, 0, 0, 0,
    0, 1, 1, 1, 0, 0, 0,
    0, 1, 1, 1, 0, 0, 0
  };

  private static final int[] ORIGIN = {26, 40, 54, 12};

  public ScheduleAdapter(ScheduleActivity context)
  {
    mContext = context;
    mSchedule = new ArrayList<Date>();
  }

  public int getCount()
  {
    return mSchedule.size();
  }

  public Object getItem(int pos)
  {
    return mSchedule.get(pos);
  }

  public long getItemId(int pos)
  {
    return pos;
  }

  public View getView(int pos, View convertView, ViewGroup parent)
  {
    Button view = (Button)convertView;
    Date cell = (Date)getItem(pos);

    if (view == null)
    {
      view = (Button)LayoutInflater.from(mContext).inflate(
        R.layout.cell, parent, false);

      if (cell.disable)
        view.setVisibility(Button.INVISIBLE);
      else
      {
        view.setText(Integer.toString(cell.day));
        view.setOnClickListener(new Date.OnClickListener(mContext, cell));
        view.setOnTouchListener(mContext);

        if (cell.today)
          view.setBackgroundResource(R.drawable.now);
        else
        {
          switch (cell.data[mContext.getTeam()])
          {
          case 1:
            view.setBackgroundResource(R.drawable.day);
            break;
          
          case 2:
            view.setBackgroundResource(R.drawable.eve);
            break;
          
          default:
            view.setBackgroundResource(R.drawable.off);
            break;
          }
        }
      }
    }
    
    return view;
  }

  public void update()
  {
    int team = mContext.getTeam();
    int year = mContext.getYear();
    int month = mContext.getMonth();

    GregorianCalendar now = new GregorianCalendar();
    GregorianCalendar date = new GregorianCalendar(year, month, 1);

    int index = (ORIGIN[team] + getOrdinal(year, month, 1)) % 56;
    int leading = date.get(GregorianCalendar.DAY_OF_WEEK) - GregorianCalendar.SUNDAY;

    mSchedule.clear();
    
    date.add(GregorianCalendar.DATE, -leading);

    // leading days
    for (int i = 0; i < leading; i++)
    {
      mSchedule.add(new Date(date));
      date.add(GregorianCalendar.DATE, 1);
    }

    while (true)
    {
      int day = date.get(GregorianCalendar.DAY_OF_MONTH);
      int delta = getOrdinal(year, month, day);
      int julian = daysBeforeMonth(year, month) + day;
      boolean today = isEqualDate(now, date);

      byte[] data = new byte[]{
        PATTERN[(ORIGIN[0] + delta) % 56],
        PATTERN[(ORIGIN[1] + delta) % 56],
        PATTERN[(ORIGIN[2] + delta) % 56],
        PATTERN[(ORIGIN[3] + delta) % 56]
      };

      mSchedule.add(new Date(date, julian, data, today));

      if (index < 55)
        index++;
      else
        index = 0;
      
      date.add(GregorianCalendar.DATE, 1);

      if (date.get(GregorianCalendar.MONTH) != month)
        break;
    }

    // trailing days
    for (int i = 0; i < mSchedule.size() % 7; i++)
    {
      mSchedule.add(new Date(date));
      date.add(GregorianCalendar.DATE, 1);
    }
  }

  // number of days since January 1st, 2010
  private int getOrdinal(int year, int month, int day)
  {
    return daysBeforeYear(year) + daysBeforeMonth(year, month) + day - 1;
  }

  private int daysBeforeYear(int year)
  {
    year -= 2010;
    return (int)((year * 365) + (year / 4) - (year / 100) + (year / 400));
  }

  // number of days before the first of `month` in the given `year`
  private int daysBeforeMonth(int year, int month)
  {
    int days = DAYS_BEFORE_MONTH[month];

    if (month > 1 && isLeap(year))
      days++;
    
    return days;
  }

  private boolean isLeap(int year)
  {
    return year % 4 == 0 && (year % 100 != 0 || year % 400 == 0);
  }

  private boolean isEqualDate(GregorianCalendar d1, GregorianCalendar d2)
  {
    return d1.get(GregorianCalendar.DAY_OF_MONTH) == d2.get(GregorianCalendar.DAY_OF_MONTH)
        && d1.get(GregorianCalendar.MONTH) == d2.get(GregorianCalendar.MONTH)
        && d1.get(GregorianCalendar.YEAR) == d2.get(GregorianCalendar.YEAR);
  }
}

Java Source Code List

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