/**
* カラムの非表示設定を行う.
*
* @param col 対象カラム番号
* @param hide true:表示 false:非表示
*/
public void setColumnHide(int col, boolean hide) {
TableColumn tc = getColumnModel().getColumn(convertColumnIndexToView(col));
int[] setting = new int[4];
setting[0] = tc.getWidth();
setting[1] = tc.getPreferredWidth();
setting[2] = tc.getMinWidth();
setting[3] = tc.getMaxWidth();
if (hide) {
if ((setting[0] == 0) && (setting[1] == 0) && (setting[2] == 0) && (setting[3] == 0)) {
int[] baseSetting = columnSizeSetting.get(col);
// setMaxWidthを実行する順番が大事
tc.setMaxWidth(baseSetting[3]);
tc.setMinWidth(baseSetting[2]);
tc.setPreferredWidth(baseSetting[1]);
tc.setWidth(baseSetting[0]);
}
} else {
if ((setting[0] != 0) || (setting[1] != 0) || (setting[2] != 0) || (setting[3] != 0)) {
columnSizeSetting.put(col, setting);
// setMaxWidthを実行する順番が大事
tc.setWidth(0);
tc.setPreferredWidth(0);
tc.setMinWidth(0);
tc.setMaxWidth(0);
}
}
}
private void strechShareWithRestColumns(int[] columnWidths) {
if (columnWidths == null) return;
List<TableColumn> columnsToStrech = new ArrayList<TableColumn>();
int alreadyDefinedSize = 0;
for (int i = 1; i < columnWidths.length - 1; i++) {
TableColumn tc = table.getColumnModel().getColumn(i);
if (columnWidths[i] == -1 && tc.getMaxWidth() > 0) columnsToStrech.add(tc);
else alreadyDefinedSize += tc.getPreferredWidth();
}
if (columnsToStrech.size() == 0) return;
int sharedTotal = table.getColumnModel().getTotalColumnWidth() - alreadyDefinedSize;
for (TableColumn tc : columnsToStrech) {
int newSize = sharedTotal / columnsToStrech.size();
tc.setPreferredWidth(newSize);
tc.setWidth(newSize);
}
}
public static void main(String args[]) {
final Object rowData[][] = {
{"1", "one", "I"},
{"2", "two", "II"},
{"3", "three", "III"}
};
final String columnNames[] = {"#", "English", "Roman"};
final JTable table = new JTable(rowData, columnNames);
JScrollPane scrollPane = new JScrollPane(table);
JFrame frame = new JFrame("Resizing Table");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(scrollPane, BorderLayout.CENTER);
TableColumn tc = null;
for (int i = 0; i < 3; i++) {
tc = table.getColumnModel().getColumn(i);
if (tc.getModelIndex() == 0) tc.setResizable(false);
if (i == 2) {
tc.setPreferredWidth(100); // sport column is bigger
} else {
tc.setPreferredWidth(50);
}
System.out.printf(
"column [%s] header=[%s] modelIndex=[%d] resizable=[%b] minWidth=[%s] maxWidth=[%d] preferredWidth=[%d]\n",
tc.getIdentifier(),
tc.getHeaderValue(),
tc.getModelIndex(),
tc.getResizable(),
tc.getMinWidth(),
tc.getMaxWidth(),
tc.getPreferredWidth());
}
frame.setSize(300, 150);
frame.setVisible(true);
}
private void resizeColumns() {
int columnCount = getColumnCount();
int rowCount = getRowCount();
TableColumnModel columnModel = getColumnModel();
for (int columnIndex = 0; columnIndex < columnCount; columnIndex++) {
TableColumn column = columnModel.getColumn(columnIndex);
int preferredWidth = column.getMinWidth();
int maxWidth = column.getMaxWidth();
// Header value with
TableCellRenderer cellRenderer = column.getHeaderRenderer();
if (cellRenderer == null) {
cellRenderer = getTableHeader().getDefaultRenderer();
}
Object headerValue = column.getHeaderValue();
Component comp =
cellRenderer.getTableCellRendererComponent(
this, headerValue, false, false, 0, columnIndex);
int width = comp.getPreferredSize().width + getIntercellSpacing().width + 15;
preferredWidth = Math.max(preferredWidth, width);
// Row values' width
for (int rowIndex = 0; rowIndex < rowCount; rowIndex++) {
cellRenderer = getCellRenderer(rowIndex, columnIndex);
comp = prepareRenderer(cellRenderer, rowIndex, columnIndex);
width = comp.getPreferredSize().width + getIntercellSpacing().width + 15;
preferredWidth = Math.max(preferredWidth, width);
if (preferredWidth >= maxWidth) {
preferredWidth = maxWidth;
break;
}
}
column.setPreferredWidth(preferredWidth);
}
}