6
我当前正在构建一个小JTable，并且希望突出显示列标题（和行标题 - 行标题部分实际上是工作），当单元格被选中时使它更容易找到这个单元格的相关名称。这里是一个图片：突出显示一个JTable的列标题
我已经尝试切换出渲染与此头：
table.getTableHeader().setDefaultRenderer(new ColumnHeaderRenderer());
但是，当我在标题点击总是说isSelected是假的它只是叫。
这是我使用的行名，其中包括渲染器里面的重头戏码 - 代码是不是我，我只是修改了一些：
/*
* Use a JTable as a renderer for row numbers of a given main table.
* This table must be added to the row header of the scrollpane that
* contains the main table.
*/
public class RowNameTable extends JTable
implements ChangeListener, PropertyChangeListener {
private JTable main;
public RowNameTable(JTable table) {
main = table;
main.addPropertyChangeListener(this);
setFocusable(false);
setAutoCreateColumnsFromModel(false);
setModel(main.getModel());
setSelectionModel(main.getSelectionModel());
TableColumn column = new TableColumn();
column.setHeaderValue(" ");
addColumn(column);
column.setCellRenderer(new RowNameRenderer(main));
getColumnModel().getColumn(0).setPreferredWidth(table.getColumnModel().getColumn(0).getPreferredWidth());
setPreferredScrollableViewportSize(getPreferredSize());
}
@Override
public void addNotify() {
super.addNotify();
Component c = getParent();
// Keep scrolling of the row table in sync with the main table.
if (c instanceof JViewport) {
JViewport viewport = (JViewport) c;
viewport.addChangeListener(this);
}
}
/*
* Delegate method to main table
*/
@Override
public int getRowCount() {
return main.getRowCount();
}
@Override
public int getRowHeight(int row) {
return main.getRowHeight(row);
}
/*
* This table does not use any data from the main TableModel,
* so just return a value based on the row parameter.
*/
@Override
public Object getValueAt(int row, int column) {
return Integer.toString(row + 1);
}
/*
* Don't edit data in the main TableModel by mistake
*/
@Override
public boolean isCellEditable(int row, int column) {
return false;
}
//
// Implement the ChangeListener
//
public void stateChanged(ChangeEvent e) {
// Keep the scrolling of the row table in sync with main table
JViewport viewport = (JViewport) e.getSource();
JScrollPane scrollPane = (JScrollPane) viewport.getParent();
scrollPane.getVerticalScrollBar().setValue(viewport.getViewPosition().y);
}
//
// Implement the PropertyChangeListener
//
public void propertyChange(PropertyChangeEvent e) {
// Keep the row table in sync with the main table
if ("selectionModel".equals(e.getPropertyName())) {
setSelectionModel(main.getSelectionModel());
}
if ("model".equals(e.getPropertyName())) {
setModel(main.getModel());
}
}
/*
* Borrow the renderer from JDK1.4.2 table header
*/
private static class RowNameRenderer extends DefaultTableCellRenderer {
private JTable main;
public RowNameRenderer(JTable main) {
this.main = main;
setHorizontalAlignment(JLabel.CENTER);
}
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
if (table != null) {
JTableHeader header = table.getTableHeader();
if (header != null) {
setForeground(header.getForeground());
setBackground(header.getBackground());
setFont(header.getFont());
}
}
if (isSelected) {
setFont(getFont().deriveFont(Font.BOLD));
}
setText((value == null) ? "" : main.getColumnName(row));
setBorder(UIManager.getBorder("TableHeader.cellBorder"));
return this;
}
}
}
在这里，我们有相关的部分创建该表：
costTableModel = new CostTableModel(costCalc);
table = new JTable(costTableModel);
table.setPreferredScrollableViewportSize(table.getPreferredSize());
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
table.setCellSelectionEnabled(true);
scrollPane = new JScrollPane(table);
RowNameTable nameTable = new RowNameTable(table);
scrollPane.setRowHeaderView(nameTable);
和类costTableModel，只是为了完整性缘故
public class CostTableModel extends AbstractTableModel {
private CostCalculator costCalc;
public CostTableModel(CostCalculator costCalc) {
this.costCalc = costCalc;
}
@Override
public int getRowCount() {
return costCalc.getPersonsList().size();
}
@Override
public int getColumnCount() {
return costCalc.getPersonsList().size();
}
@Override
public String getColumnName(int col) {
return costCalc.getPersonsList().get(col).getName();
}
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
Person debtor = costCalc.getPersonsList().get(rowIndex);
Person debtee = costCalc.getPersonsList().get(columnIndex);
return costCalc.getAmountOwed(debtor, debtee);
}
@Override
public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
}
}
感谢您提前给予您的帮助！
首先，谢谢！这看起来非常像我需要的东西，我目前没有时间将其实现到我的代码中，但我今晚会做，并在此处报告。 – wlfbck 2013-03-19 11:06:24
好吧，我现在建立它！它完美的工作，除了一个小东西（标记几个列标题），但我会尽力弄清楚我的自我，并学习一些关于JTables :) – wlfbck 2013-03-20 00:01:49
嗯......不明白如何倾听_row_选择有助于重新绘制_column_选择更改。实际上，它不会：选择一个单元格，然后在同一行中移动选择内容，并且列的高亮区不会更新。 – kleopatra 2013-03-23 17:10:20