Calendário

spdio · Abril 18, 2008, 8:34am

Bom dia pessoal, preciso de ajuda.

Este calendário --> http://www.soujava.org.br/display/v/Calendario ,é um componente? Preciso de algo parecido pra desenvolver um caso de uso.

O caso de uso consiste basicamente em um calendario com mes e ano selecionado pelo usuário, e ao clicar em alguma data deste calendário ele retorna umas ocorrencias registradas na data.

Vlw
Abraços

horacio_barros · Abril 18, 2008, 8:44am

Bacana,

acho que isto aqui vai te ajudar.

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Calendar;
import java.util.GregorianCalendar;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;

/**

Bean to display a month calendar in a JPanel. Only works for the Western
calendar.
@author Ian F. Darwin, http://www.darwinsys.com/
@version $Id: Cal.java,v 1.5 2004/02/09 03:33:45 ian Exp $
*/
public class Cal extends JPanel {

/** The currently-interesting year (not modulo 1900!) */
protected int yy;

/** Currently-interesting month and day */
protected int mm, dd;

/** The buttons to be displayed */
protected JButton labs[][];

/** The number of day squares to leave blank at the start of this month */
protected int leadGap = 0;

/** A Calendar object used throughout */
Calendar calendar = new GregorianCalendar();

/** Today’s year */
protected final int thisYear = calendar.get(Calendar.YEAR);

/** Today’s month */
protected final int thisMonth = calendar.get(Calendar.MONTH);

/** One of the buttons. We just keep its reference for getBackground(). */
private JButton b0;

/** The month choice */
private JComboBox monthChoice;

/** The year choice */
private JComboBox yearChoice;

// Dia de hoje
protected int dia_de_hoje;

/**

Construct a Cal, starting with today.
*/
Cal() {
super();
setYYMMDD(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH),
calendar.get(Calendar.DAY_OF_MONTH));
buildGUI();
recompute();
}

/**

Construct a Cal, given the leading days and the total days
@exception IllegalArgumentException
```
           If year out of range
```

*/
Cal(int year, int month, int today) {
super();
setYYMMDD(year, month, today);
buildGUI();
recompute();
}

private void setYYMMDD(int year, int month, int today) {
yy = year;
mm = month;
dd = today;
}

String[] months = { “January”, “February”, “March”, “April”, “May”, “June”,
“July”, “August”, “September”, “October”, “November”, “December” };

/** Build the GUI. Assumes that setYYMMDD has been called. */
private void buildGUI() {
getAccessibleContext().setAccessibleDescription(
“Calendar not accessible yet. Sorry!”);
setBorder(BorderFactory.createEtchedBorder());

setLayout(new BorderLayout());

JPanel tp = new JPanel();
tp.add(monthChoice = new JComboBox());
for (int i = 0; i < months.length; i++)
  monthChoice.addItem(months[i]);
monthChoice.setSelectedItem(months[mm]);
monthChoice.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent ae) {
    int i = monthChoice.getSelectedIndex();
    if (i >= 0) {
      mm = i;
      // System.out.println("Month=" + mm);
      recompute();
    }
  }
});
monthChoice.getAccessibleContext().setAccessibleName("Months");
monthChoice.getAccessibleContext().setAccessibleDescription(
    "Choose a month of the year");

tp.add(yearChoice = new JComboBox());
yearChoice.setEditable(true);
for (int i = yy - 5; i < yy + 5; i++)
  yearChoice.addItem(Integer.toString(i));
yearChoice.setSelectedItem(Integer.toString(yy));
yearChoice.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent ae) {
    int i = yearChoice.getSelectedIndex();
    if (i >= 0) {
      yy = Integer.parseInt(yearChoice.getSelectedItem()
          .toString());
      // System.out.println("Year=" + yy);
      recompute();
    }
  }
});
add(BorderLayout.CENTER, tp);

JPanel bp = new JPanel();
bp.setLayout(new GridLayout(7, 7));
labs = new JButton[6][7]; // first row is days

bp.add(b0 = new JButton("S"));
bp.add(new JButton("M"));
bp.add(new JButton("T"));
bp.add(new JButton("W"));
bp.add(new JButton("R"));
bp.add(new JButton("F"));
bp.add(new JButton("S"));

ActionListener dateSetter = new ActionListener() {
  public void actionPerformed(ActionEvent e) {
    String num = e.getActionCommand();
    if (!num.equals("")) {
      // set the current day highlighted
      setDayActive(Integer.parseInt(num));
      JOptionPane.showMessageDialog(null,"Dia:"+dia_de_hoje+"/"+(mm+1)+"/"+yy);
      // When this becomes a Bean, you can
      // fire some kind of DateChanged event here.
      // Also, build a similar daySetter for day-of-week btns.
    }
  }
};

// Construct all the buttons, and add them.
for (int i = 0; i < 6; i++)
  for (int j = 0; j < 7; j++) {
    bp.add(labs[i][j] = new JButton(""));
    labs[i][j].addActionListener(dateSetter);
  }

add(BorderLayout.SOUTH, bp);

}

public final static int dom[] = { 31, 28, 31, 30, /* jan feb mar apr /
31, 30, 31, 31, / may jun jul aug /
30, 31, 30, 31 / sep oct nov dec */
};

/** Compute which days to put where, in the Cal panel */
protected void recompute() {
// System.out.println("Cal::recompute: " + yy + “:” + mm + “:” + dd);
if (mm < 0 || mm > 11)
throw new IllegalArgumentException(“Month " + mm
+ " bad, must be 0-11”);
clearDayActive();
calendar = new GregorianCalendar(yy, mm, dd);

// Compute how much to leave before the first.
// getDay() returns 0 for Sunday, which is just right.
leadGap = new GregorianCalendar(yy, mm, 1).get(Calendar.DAY_OF_WEEK) - 1;
// System.out.println("leadGap = " + leadGap);

int daysInMonth = dom[mm];
if (isLeap(calendar.get(Calendar.YEAR)) && mm > 1)
  ++daysInMonth;

// Blank out the labels before 1st day of month
for (int i = 0; i < leadGap; i++) {
  labs[0][i].setText("");
}

// Fill in numbers for the day of month.
for (int i = 1; i <= daysInMonth; i++) {
  JButton b = labs[(leadGap + i - 1) / 7][(leadGap + i - 1) % 7];
  b.setText(Integer.toString(i));
}

// 7 days/week * up to 6 rows
for (int i = leadGap + 1 + daysInMonth; i < 6 * 7; i++) {
  labs[(i) / 7][(i) % 7].setText("");
}

// Shade current day, only if current month
if (thisYear == yy && mm == thisMonth)
  setDayActive(dd); // shade the box for today

// Say we need to be drawn on the screen
repaint();

}

/**

isLeap() returns true if the given year is a Leap Year.
"a year is a leap year if it is divisible by 4 but not by 100, except
that years divisible by 400 are leap years." – Kernighan & Ritchie,
The C Programming Language, p 37.
*/
public boolean isLeap(int year) {
if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0)
return true;
return false;
}

/** Set the year, month, and day */
public void setDate(int yy, int mm, int dd) {
// System.out.println(“Cal::setDate”);
this.yy = yy;
this.mm = mm; // starts at 0, like Date
this.dd = dd;
recompute();
}

/** Unset any previously highlighted day */
private void clearDayActive() {
JButton b;

// First un-shade the previously-selected square, if any
if (activeDay > 0) {
  b = labs[(leadGap + activeDay - 1) / 7][(leadGap + activeDay - 1) % 7];
  b.setBackground(b0.getBackground());
  b.repaint();
  activeDay = -1;
}

}

private int activeDay = -1;

/** Set just the day, on the current month */
public void setDayActive(int newDay) {

clearDayActive();

// Set the new one
if (newDay <= 0)
  dd = new GregorianCalendar().get(Calendar.DAY_OF_MONTH);
else
  dd = newDay;
// Now shade the correct square
Component square = labs[(leadGap + newDay - 1) / 7][(leadGap + newDay - 1) % 7];
square.setBackground(Color.red);
square.repaint();
activeDay = newDay;
dia_de_hoje = newDay; // HB

}

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Calendar;
import java.util.GregorianCalendar;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;

/**

Bean to display a month calendar in a JPanel. Only works for the Western
calendar.
@author Ian F. Darwin, http://www.darwinsys.com/
@version $Id: Cal.java,v 1.5 2004/02/09 03:33:45 ian Exp $
*/
public class Cal extends JPanel {