/** * This function re-computes the total number of hours for the selected period. It is ran every * time the user edits a text field specifying the number of hours for a particular top-level * project. Percentage labels are also updated. */ private void recomputeTotal() { double total = 0; for (Row row : rows.values()) { try { row.hours = Double.parseDouble(row.hoursTF.getText()); total += row.hours; row.hoursTF.setForeground(normalColour); } catch (NumberFormatException e) { row.hoursTF.setForeground(errorColour); totalLabel.setText("ERROR"); totalLabel.setForeground(errorColour); return; } } totalLabel.setText(decimalFormat.format(total)); totalLabel.setForeground(normalColour); for (Row row : rows.values()) { String percentS = decimalFormat.format(total == 0 ? 0 : 100 * row.hours / total); row.percentL.setText("(" + percentS + "%)"); } pack(); }