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/*
Core SWING Advanced Programming
By Kim Topley
ISBN: 0 13 083292 8
Publisher: Prentice Hall
*/
import javax.swing.*;
import javax.swing.table.*;
import java.awt.*;
public class TableUtilities {
// Calculate the required width of a table column
public static int calculateColumnWidth(JTable table,
int columnIndex) {
int width = 0; // The return value
int rowCount = table.getRowCount();
for (int i = 0; i < rowCount ; i++) {
TableCellRenderer renderer = table.getCellRenderer(i, columnIndex);
Component comp = renderer.getTableCellRendererComponent(
table, table.getValueAt(i, columnIndex),
false, false, i, columnIndex);
int thisWidth = comp.getPreferredSize().width;
if (thisWidth > width) {
width = thisWidth;
}
}
return width;
}
// Set the widths of every column in a table
public static void setColumnWidths(JTable table, Insets insets,
boolean setMinimum,
boolean setMaximum) {
int columnCount = table.getColumnCount();
TableColumnModel tcm = table.getColumnModel();
int spare = (insets == null ? 0 : insets.left + insets.right);
for (int i = 0; i < columnCount; i++) {
int width = calculateColumnWidth(table, i);
width += spare;
TableColumn column = tcm.getColumn(i);
column.setPreferredWidth(width);
if (setMinimum == true) {
column.setMinWidth(width);
}
if (setMaximum == true) {
column.setMaxWidth(width);
}
}
}
// Sort an array of integers in place
public static void sort(int[] values) {
int length = values.length;
if (length > 1) {
for (int i = 0; i < length - 1 ; i++) {
for (int j = i + 1; j < length; j++) {
if (values[j] < values[i]) {
int temp = values[i];
values[i] = values[j];
values[j] = temp;
}
}
}
}
}
}
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