@Override
public void mousePressed(final MouseEvent e) {
Performance.gc(3);
repaint();
final Runtime rt = Runtime.getRuntime();
final long max = rt.maxMemory();
final long total = rt.totalMemory();
final long used = total - rt.freeMemory();
final String inf =
TOTAL_MEM_C
+ Performance.format(max, true)
+ NL
+ RESERVED_MEM_C
+ Performance.format(total, true)
+ NL
+ MEMUSED_C
+ Performance.format(used, true)
+ NL
+ NL
+ H_USED_MEM;
BaseXDialog.info(gui, inf);
}
/**
* Called when the user selects a name in the date list. Fetches performance data from the
* database and displays it in the text fields.
*
* @param e The selected list item.
*/
public void valueChanged(ListSelectionEvent e) {
if (nameList.isSelectionEmpty() || dateList.isSelectionEmpty()) {
return;
}
String movieName = (String) nameList.getSelectedValue();
String date = (String) dateList.getSelectedValue();
/* --- insert own code here --- */
fields[MOVIE_NAME].setText(movieName);
fields[PERF_DATE].setText(date);
Performance p = db.getPerformance(movieName, date);
fields[THEATER_NAME].setText(p.getTheaterName());
fields[FREE_SEATS].setText((p.getTotalSeats() - p.getBookedSeats()) + "");
}
/**
* Called when the user clicks the Book ticket button. Books a ticket for the current user to
* the selected performance (adds a booking to the database).
*
* @param e The event object (not used).
*/
public void actionPerformed(ActionEvent e) {
if (nameList.isSelectionEmpty() || dateList.isSelectionEmpty()) {
return;
}
if (!CurrentUser.instance().isLoggedIn()) {
displayMessage("Must login first");
return;
}
String movieName = (String) nameList.getSelectedValue();
String date = (String) dateList.getSelectedValue();
/* --- insert own code here --- */
Performance p = db.getPerformance(movieName, date);
boolean result = db.makeReservation(p);
Performance pUpdated = db.getPerformance(movieName, date);
fields[FREE_SEATS].setText((pUpdated.getTotalSeats() - pUpdated.getBookedSeats()) + "");
if (result) displayMessage("1 ticket booked for " + movieName);
else displayMessage("Error!");
}
@Override
public void paintComponent(final Graphics g) {
super.paintComponent(g);
final Runtime rt = Runtime.getRuntime();
final long max = rt.maxMemory();
final long total = rt.totalMemory();
final long used = total - rt.freeMemory();
final int ww = getWidth();
final int hh = getHeight();
// draw memory box
g.setColor(Color.white);
g.fillRect(0, 0, ww - 3, hh - 3);
g.setColor(GRAY);
g.drawLine(0, 0, ww - 4, 0);
g.drawLine(0, 0, 0, hh - 4);
g.drawLine(ww - 3, 0, ww - 3, hh - 3);
g.drawLine(0, hh - 3, ww - 3, hh - 3);
// show total memory usage
g.setColor(color1);
g.fillRect(2, 2, Math.max(1, (int) (total * (ww - 6) / max)), hh - 6);
// show current memory usage
final boolean full = used * 6 / 5 > max;
g.setColor(full ? colormark4 : color3);
g.fillRect(2, 2, Math.max(1, (int) (used * (ww - 6) / max)), hh - 6);
// print current memory usage
final FontMetrics fm = g.getFontMetrics();
final String mem = Performance.format(used, true);
final int fw = (ww - fm.stringWidth(mem)) / 2;
final int h = fm.getHeight() - 3;
g.setColor(full ? colormark3 : DGRAY);
g.drawString(mem, fw, h);
}
