私は、JTable でセルを結合/分割する機能とともに行番号を表示する必要があるプロジェクトに取り組んでいます。この機能を実装するために、URL のコードをたどりました:-
1.) RowNumberHeader -> http://tips4java.wordpress.com/2008/11/18/row-number-table/
次に、コードに従ってセルを結合/分割しました:-
http://www.java3z.com/cwbwebhome/article/article5/swing_example/JTableExamples4.html
上記のコードを統合すると、次のようになります。
package com.test.jtable;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.border.*;
/**
* @version 1.0 11/22/98
*/
public class MixedExample extends JFrame {
public MixedExample() {
super( "Mixed Example" );
AttributiveCellTableModel ml = new AttributiveCellTableModel(100,5) {
public Object getValueAt(int row, int col) {
return "" + row + ","+ col;
}
};
CellAttribute cellAtt = ml.getCellAttribute();
MultiSpanCellTable table = new MultiSpanCellTable( ml );
table.setCellSelectionEnabled(true);
table.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
table.setDefaultRenderer(Object.class ,new AttributiveCellRenderer());
JTable jRowTable = new RowNumberTable(table);
JScrollPane scroll = new JScrollPane(table);
scroll.setRowHeaderView(jRowTable);
scroll.setCorner(scroll.UPPER_LEFT_CORNER,jRowTable.getTableHeader());
scroll.setSize(300,300);
ColorPanel colorPanel = new ColorPanel(table,(ColoredCell)cellAtt);
FontPanel fontPanel = new FontPanel(table, (CellFont)cellAtt);
SpanPanel spanPanel = new SpanPanel(table, (CellSpan)cellAtt);
Box boxAtt = new Box(BoxLayout.Y_AXIS);
boxAtt.add(colorPanel);
boxAtt.add(fontPanel);
boxAtt.add(spanPanel);
Box box = new Box(BoxLayout.X_AXIS);
box.add(scroll);
box.add(new JSeparator(SwingConstants.HORIZONTAL));
box.add(boxAtt);
getContentPane().add( box );
setSize( 400, 300 );
setVisible(true);
}
class ColorPanel extends JPanel {
JTable table;
ColoredCell cellAtt;
ColorPanel(final JTable table, final ColoredCell cellAtt) {
this.table = table;
this.cellAtt = cellAtt;
setLayout(new GridLayout(2,1));
setBorder(BorderFactory.createTitledBorder("Color"));
JButton b_fore = new JButton("Foreground");
b_fore.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
changeColor(true);
}
});
JButton b_back = new JButton("Background");
b_back.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
changeColor(false);
}
});
JPanel p_buttons = new JPanel();
add(b_fore);
add(b_back);
}
private final void changeColor(boolean isForeground) {
int[] columns = table.getSelectedColumns();
int[] rows = table.getSelectedRows();
if ((rows == null) || (columns == null)) return;
if ((rows.length<1)||(columns.length<1)) return;
Color target = cellAtt.getForeground(rows[0], columns[0]);
Color reference = cellAtt.getBackground(rows[0], columns[0]);
for (int i=0;i<rows.length;i++) {
int row = rows[i];
for (int j=0;j<columns.length;j++) {
int column = columns[j];
target = (target != cellAtt.getForeground(row, column)) ?
null : target;
reference = (reference != cellAtt.getBackground(row, column)) ?
null : reference;
}
}
String title;
if (isForeground) {
target = (target !=null) ? target : table.getForeground();
reference = (reference!=null) ? reference : table.getBackground();
title = "Foreground Color";
} else {
target = (reference!=null) ? reference : table.getBackground();
reference = (target !=null) ? target : table.getForeground();
title = "Foreground Color";
}
TextColorChooser chooser =
new TextColorChooser(target, reference, isForeground);
Color color = chooser.showDialog(MixedExample.this,title);
if (color != null) {
if (isForeground) {
cellAtt.setForeground(color, rows, columns);
} else {
cellAtt.setBackground(color, rows, columns);
}
table.clearSelection();
table.revalidate();
table.repaint();
}
}
}
class FontPanel extends JPanel {
String[] str_size = {"10","12","14","16","20"};
String[] str_style = {"PLAIN","BOLD","ITALIC"};
JComboBox name,style,size;
FontPanel(final JTable table, final CellFont cellAtt) {
setLayout(new BorderLayout());
setBorder(BorderFactory.createTitledBorder("Font"));
Box box = new Box(BoxLayout.X_AXIS);
JPanel p2 = new JPanel(new GridLayout(3,1));
JPanel p3 = new JPanel(new GridLayout(3,1));
JPanel p4 = new JPanel(new BorderLayout());
p2.add(new JLabel("Name:"));
p2.add(new JLabel("Style:"));
p2.add(new JLabel("Size:"));
Toolkit toolkit = Toolkit.getDefaultToolkit();
name = new JComboBox(toolkit.getFontList());
style = new JComboBox(str_style);
size = new JComboBox(str_size);
size.setEditable(true);
JButton b_apply = new JButton("Apply");
b_apply.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
int[] columns = table.getSelectedColumns();
int[] rows = table.getSelectedRows();
if ((rows == null) || (columns == null)) return;
if ((rows.length<1)||(columns.length<1)) return;
Font font = new Font((String)name.getSelectedItem(),
style.getSelectedIndex(),
Integer.parseInt((String)size.getSelectedItem()));
cellAtt.setFont(font, rows, columns);
table.clearSelection();
table.revalidate();
table.repaint();
}
});
p3.add(name);
p3.add(style);
p3.add(size);
p4.add(BorderLayout.CENTER,b_apply);
box.add(p2);
box.add(p3);
add(BorderLayout.CENTER,box);
add(BorderLayout.SOUTH, p4);
}
}
class SpanPanel extends JPanel {
JTable table;
CellSpan cellAtt;
SpanPanel(final JTable table, final CellSpan cellAtt) {
this.table = table;
this.cellAtt = cellAtt;
setLayout(new GridLayout(2,1));
setBorder(BorderFactory.createTitledBorder("Span"));
JButton b_one = new JButton("Combine");
b_one.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
int[] columns = table.getSelectedColumns();
int[] rows = table.getSelectedRows();
cellAtt.combine(rows,columns);
table.clearSelection();
table.revalidate();
table.repaint();
}
});
JButton b_split = new JButton("Split");
b_split.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
int column = table.getSelectedColumn();
int row = table.getSelectedRow();
cellAtt.split(row,column);
table.clearSelection();
table.revalidate();
table.repaint();
}
});
add(b_one);
add(b_split);
}
}
public static void main(String[] args) {
MixedExample frame = new MixedExample();
frame.addWindowListener( new WindowAdapter() {
public void windowClosing( WindowEvent e ) {
System.exit(0);
}
});
}
}
スクロールすると、以下のように空白の行が表示されます:-
MultiSpanCellTable で行の高さと列の幅を調整するなど、いくつか試してみましたが、この後、多数の行では表示されません。
これに関連するアイデアを自由に共有してください。
ありがとう