Java JTable Column Pack packColumns(final JTable table, final int margin)

Description

pack Columns

License

Apache License

Declaration

public static void packColumns(final JTable table, final int margin)

Method Source Code


//package com.java2s;
/*/*  www .jav  a 2  s  .  co m*/
   Copyright 2011 Udayakumar Dhansingh (Udy)
    
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at
    
   http://www.apache.org/licenses/LICENSE-2.0
    
   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
       
 */

import java.awt.Component;
import javax.swing.JTable;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;

public class Main {
    public static void packColumns(final JTable table, final int margin) {
        for (int index = 0; index < table.getColumnCount(); index++) {
            packColumn(table, index, margin);
        }
    }

    private static void packColumn(final JTable table, final int vColIndex, final int margin) {
        DefaultTableColumnModel columnModel = (DefaultTableColumnModel) table.getColumnModel();
        TableColumn column = columnModel.getColumn(vColIndex);
        int width = 0;

        // Get width of column header
        TableCellRenderer renderer = column.getHeaderRenderer();
        if (renderer == null) {
            renderer = table.getTableHeader().getDefaultRenderer();
        }
        Component component = renderer.getTableCellRendererComponent(table, column.getHeaderValue(), false, false,
                0, 0);
        width = component.getPreferredSize().width;

        // Get maximum width of column data
        for (int r = 0; r < table.getRowCount(); r++) {
            renderer = table.getCellRenderer(r, vColIndex);
            component = renderer.getTableCellRendererComponent(table, table.getValueAt(r, vColIndex), false, false,
                    r, vColIndex);
            width = Math.max(width, component.getPreferredSize().width);
        }

        // Add margin
        width += (2 * margin);

        // Set the width
        column.setPreferredWidth(width);
    }
}

Java JTable Column Pack packColumns(final JTable table, final int margin)

Description

License

Declaration

Method Source Code

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