Java JTable Column layoutColumns(JTable p_Table, boolean p_OnlyVisibleRows)

Description

layout Columns

License

Open Source License

Declaration

public static void layoutColumns(JTable p_Table, boolean p_OnlyVisibleRows) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.awt.Component;
import java.awt.Dimension;
import java.awt.Point;

import javax.swing.JTable;

import javax.swing.table.JTableHeader;
import javax.swing.table.TableColumn;

public class Main {
    public static void layoutColumns(JTable p_Table, boolean p_OnlyVisibleRows) {
        int column = 0;
        TableColumn c = null;/*from ww  w.  j a  v a  2s.c o m*/
        int firstRow = p_OnlyVisibleRows ? getFirstVisibleRow(p_Table) : 0;
        int lastRow = p_OnlyVisibleRows ? getLastVisibleRow(p_Table) : (p_Table.getModel().getRowCount() - 1);
        Dimension intercellSpacing = p_Table.getIntercellSpacing();
        JTableHeader tableHeader = p_Table.getTableHeader();
        for (java.util.Enumeration columns = tableHeader.getColumnModel().getColumns(); columns
                .hasMoreElements(); column++) {
            c = (TableColumn) columns.nextElement();
            Component component = (c.getHeaderRenderer() != null)
                    ? c.getHeaderRenderer().getTableCellRendererComponent(p_Table, c.getHeaderValue(), false, false,
                            -1, column)
                    : tableHeader.getDefaultRenderer().getTableCellRendererComponent(p_Table, c.getHeaderValue(),
                            false, false, -1, column);

            int width = Math.max(c.getWidth(), component.getPreferredSize().width);
            if (firstRow >= 0) {
                for (int i = firstRow, d = lastRow; i <= d; i++) {
                    width = Math
                            .max(width,
                                    p_Table.getCellRenderer(i, column).getTableCellRendererComponent(p_Table,
                                            p_Table.getModel().getValueAt(i, column), false, false, i, column)
                                            .getPreferredSize().width + intercellSpacing.width);
                }
            }
            c.setPreferredWidth(width);
            c.setWidth(width);
        }
    }

    public static int getFirstVisibleRow(JTable p_Table) {
        Point p = p_Table.getVisibleRect().getLocation();
        return p_Table.rowAtPoint(p);
    }

    public static int getLastVisibleRow(JTable p_Table) {
        Point p = p_Table.getVisibleRect().getLocation();
        p.y = p.y + p_Table.getVisibleRect().height - 1;
        int result = p_Table.rowAtPoint(p);
        if (result > 0)
            return result;

        // if there is no rows at this point,rowatpoint() return -1,
        // It means that there is not enough rows to fill the rectangle where
        // the table is displayed.
        // if this case we return getRowCount()-1 because
        // we are sure that the last row is visible
        if (p_Table.getVisibleRect().height > 0)
            return p_Table.getRowCount() - 1;
        else
            return -1;
    }
}

Related

1. hideColumn(JTable table, int columnIndex)
2. installDelegatingColumn(TableColumn column, String label)
3. isColumnDefinitionChange(TableModelEvent e)
4. isColumnSorted(JTable table, int column)
5. isNotDuplicateKeyOfTable(String text, TableModel model, int column)
6. loadToTableModel(String fileName, Object[] columns)
7. makeTablePanel(int rows, int cols, int mainColumn, JComponent components[])
8. newTable(String name, Object[][] rowData, Object[] columnNames)
9. pack(JTable table, boolean packColumns, boolean packRows, int padding)