基于 TableCell 值的 JTable 行高亮器 [英] JTable row hightlighter based on value from TableCell
问题描述
当我读到无法编码我的纳瓦霍语
as I read that not possible to Encode my Navajo language
了解如何仅将颜色交替/条纹化到 JTable 中(例如@camickr)
finging the way how to only alternate/striped Color into JTable (example @camickr)
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
public class TableRowRenderingTip extends JPanel {
private static final long serialVersionUID = 1L;
public TableRowRenderingTip() {
Object[] columnNames = {"Type", "Company", "Shares", "Price", "Boolean"};
Object[][] data = {
{"Buy", "IBM", new Integer(1000), new Double(80.5), Boolean.TRUE},
{"Sell", "Dell", new Integer(2000), new Double(6.25), Boolean.FALSE},
{"Short Sell", "Apple", new Integer(3000), new Double(7.35), Boolean.TRUE},
{"Buy", "MicroSoft", new Integer(4000), new Double(27.50), Boolean.FALSE},
{"Short Sell", "Cisco", new Integer(5000), new Double(20), Boolean.TRUE}
};
DefaultTableModel model = new DefaultTableModel(data, columnNames) {
private static final long serialVersionUID = 1L;
@Override
public Class getColumnClass(int column) {
return getValueAt(0, column).getClass();
}
};
JTabbedPane tabbedPane = new JTabbedPane();
tabbedPane.addTab("Alternating", createAlternating(model));
add(tabbedPane);
}
private JComponent createAlternating(DefaultTableModel model) {
JTable table = new JTable(model) {
private static final long serialVersionUID = 1L;
@Override
public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
Component c = super.prepareRenderer(renderer, row, column);
if (!isRowSelected(row)) { // Alternate row color
c.setBackground(row % 2 == 0 ? getBackground() : Color.LIGHT_GRAY);
}
return c;
}
};
table.setPreferredScrollableViewportSize(table.getPreferredSize());
return new JScrollPane(table);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
createAndShowGUI();
}
});
}
public static void createAndShowGUI() {
JFrame.setDefaultLookAndFeelDecorated(false);
JFrame frame = new JFrame("Table Row Rendering");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TableRowRenderingTip());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
我有一个 JTable，其中包含一些市场交易(由于我的英语能力差，所以更好地理解)，但有些交易只有一条腿，但另一条腿(例如 vanilla Cross Currency Swap)可以有两条腿.如何根据来自特定 TableColumn 的值(例如名为 DealId 的最后一列)突出显示 TableRows.我试图用 row - 1 && 检查 ，但我的空脑袋生成了很多代码行，对于如何停止复杂简单的简单事情，如何检查另一行中是否存在重复值的想法非常多(总是严格按照图片中的顺序进行排序)).不知道如何实现简单的公式rowrow + 1
I have a JTable which contains some market trades (better for understanding by reason my poor English skills), but some of deals has only one leg, but another (for example vanilla Cross Currency Swap) could have two legs. How is possible to hightlighting TableRows based on value from specifics TableColumn (for example last column with name DealId). I tried to check row with row - 1 && row + 1, but my empty head generated lots of codesRow, to much for idea how to stop complicated simple simple things, how to check if there exist duplicate value in another row (always with strict ordering as captured in the pictures). No idea how to implements simple formula for that
图片展示:
从代码生成:
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
public class TablePrepareRenderer extends JFrame {
private static final long serialVersionUID = 1L;
private Object[] columnNames = {
"Buy/Sell", "Type", "SubType", "Ccy1", "Amount1", "Ccy2", "Amount2", "DealId"};
private Object[][] data = {
{"Buy&Sell", "Ccy Swap", "A1", "EUR", new Double(1000000.00), "USD", new Double(1439000.00), 50},
{"Buy&Sell", "Ccy Swap", "A3", "USD", new Double(1438900.00), "EUR", new Double(1000000.00), 50},
{"Buy&Sell", "Ccy Swap", "A1", "EUR", new Double(500000.00), "CHF", new Double(550000.00), 350},
{"Buy&Sell", "Ccy Swap", "A1", "CHF", new Double(549800.00), "EUR", new Double(500000.00), 350},
{"Sell&Buy", "Ccy Swap", "A3", "USD", new Double(1000000.00), "EUR", new Double(749000.00), 2250},
{"Sell&Buy", "Ccy Swap", "A1", "EUR", new Double(748900.00), "USD", new Double(1000000.00), 2250},
{"Buy&Sell", "Ccy Swap", "A1", "GBP", new Double(1000000.00), "USD", new Double(1638100.00), 400},
{"Buy&Sell", "Ccy Swap", "A3", "USD", new Double(1638200.00), "GBP", new Double(1000000.00), 400},
{"Sell", "Ccy Spot", "A1", "AUD", new Double(343575.0), "EUR", new Double(250000.0), 11990},
{"Buy", "Ccy Spot", "A1", "EUR", new Double(100000.00), "JPY", new Double(1099000.00), 259},
{"Sell", "Ccy Fwd", "A3", "DKK", new Double(74889.00), "EUR", new Double(10000.00), 115439},};
private JTable table;
public TablePrepareRenderer() {
DefaultTableModel model = new DefaultTableModel(data, columnNames);
table = new JTable(model) {
private static final long serialVersionUID = 1L;
@Override
public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
Component c = super.prepareRenderer(renderer, row, column);
JComponent jc = (JComponent) c;
/*if (!isRowSelected(row)) {
c.setBackground(getBackground());
int modelRow = convertRowIndexToModel(row);
String type = (String) getModel().getValueAt(modelRow, 0);
if (("Buy".equals(type)) && !("Buy&Sell".equals(type))) {
c.setBackground(Color.orange);
} else if (("Sell".equals(type)) && !("Sell&Buy".equals(type))) {
c.setBackground(Color.orange);
} else if ("Buy&Sell".equals(type)) {
c.setBackground(Color.yellow);
} else if ("Sell&Buy".equals(type)) {
c.setBackground(Color.yellow);
}
}*/
/*if (!isRowSelected(row)) {
if (row == 0 ||row == 1||row == 4||row == 6||row == 7||row == 9||row == 10) {
((JComponent) c).setBackground(Color.orange);
} else {
((JComponent) c).setBackground(Color.yellow);
}
}*/
if (!isRowSelected(row)) {
if (row == 0 || row == 1 || row == 4 || row == 5 || row == 8 || row == 10) {
((JComponent) c).setBackground(Color.orange);
} else {
((JComponent) c).setBackground(Color.yellow);
}
}
if (column == 0 || column == 1 || column == 2 || column == 3 || column == 5) {
//setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
//c.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
//(JComponent) c.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
}
return c;
}
@Override
public Class getColumnClass(int column) {
switch (column) {
case 0:
return String.class;
case 1:
return String.class;
case 2:
return String.class;
case 3:
return String.class;
case 4:
return Double.class;
case 5:
return String.class;
case 6:
return Double.class;
case 7:
return Integer.class;
}
return null;
}
};
table.setPreferredScrollableViewportSize(table.getPreferredSize());
JScrollPane scrollPane = new JScrollPane(table);
getContentPane().add(scrollPane);
}
public static void main(String[] args) {
TablePrepareRenderer frame = new TablePrepareRenderer();
frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
如何将TableCell的Alignment设置为prepareRenderer，
推荐答案
如何在prepareRenderer中设置TableCell的Alignment，
how to set Alignment for TableCell into prepareRenderer,
这不应该在 prepareRenderer 代码中完成.此属性应在类或列的渲染器中设置，因为它仅适用于特定的类或渲染器.而是使用:
This should NOT be done in the prepareRenderer code. This property should be set in the renderer for the class or for the column because it only applies to a specific class or renderer. Instead use:
table.setPreferredScrollableViewportSize(table.getPreferredSize());
DefaultTableCellRenderer stringRenderer = (DefaultTableCellRenderer)table.getDefaultRenderer(String.class);
stringRenderer.setHorizontalAlignment( SwingConstants.CENTER );
对于突出显示代码，我使用的代码假定 dealld 值对于给定的一组交易是唯一的:
For the highlighting code I used code that assumes that the dealld value is unique for a given set of transactions:
private Map<Object, Color> rowColor = new HashMap<Object, Color>();
private Color nextColor = Color.ORANGE;
@Override
public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
Component c = super.prepareRenderer(renderer, row, column);
JComponent jc = (JComponent) c;
if (isRowSelected(row)) return c;
Object value = table.getValueAt(row, 7);
Color background = rowColor.get(value);
if (background != null)
{
c.setBackground( background );
}
else
{
rowColor.put(value, nextColor);
c.setBackground( nextColor );
nextColor = (nextColor == Color.ORANGE) ? Color.YELLOW : Color.ORANGE;
}
return c;
}
注意:如果需要排序，它将不起作用.
Note: It won't work if sorting is required.
这是另一种即使需要排序也应该有效的方法(但我没有用排序对其进行测试)；
Here is another approach that should work even if sorting is required (but I didn't test it with sorting);
@Override
public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
Component c = super.prepareRenderer(renderer, row, column);
JComponent jc = (JComponent) c;
if (!isRowSelected(row))
{
c.setBackground(getRowBackground(row));
}
return c;
}
private Color getRowBackground(int row)
{
boolean isDark = true;
Object previous = getValueAt(0, 7);
for (int i = 1; i <= row; i++)
{
Object current = getValueAt(i, 7);
if (! current.equals(previous))
{
isDark = !isDark;
previous = current;
}
}
return isDark ? Color.ORANGE : Color.YELLOW;
}
这篇关于基于 TableCell 值的 JTable 行高亮器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
