java - DefaultTableModel 突出显示单击的单元格

Question

我正在制作一个 GUI 简单的日历程序。我使用 DefaultTableModel 和 DefaultTableCellRenderer 显示日历的月 View 。我的日历设置为突出显示今天的日期。我希望它还可以用其他颜色突出显示用户点击的日期。我已将鼠标监听器附加到每个单元格，并且能够检索这些单元格的日期，但我不知道如何让 tblCalendarRenderer 更新(至少不正确)。我让它开始突出显示一些用相同颜色单击的日期，但它只是像其他所有单击一样突出显示我单击的前一个日期，而不是当前日期。它还将开始突出显示多个，然后在某个时刻刷新。有人可以告诉我如何正确完成它吗？

这是一些代码:

public static void monthView(final int month, int year){
            //print month calendar

            int nod, som; //Number Of Days, Start Of Month

            //Clear table
            for (int i = 0; i < 6; i++){
                for (int j = 0; j < 7; j++){
                    MyCalendarTester.mtblCalendar.setValueAt(null, i, j);
                }
            }

            if(initial){ // to make sure that the mouse listeners are only created once.
                initial = false;
                MyCalendarTester.tblCalendar.addMouseListener(new MouseAdapter(){
                    @Override
                    public void mouseClicked(MouseEvent event) {
                        // TODO Auto-generated method stub
                        int rowEvent = MyCalendarTester.tblCalendar.getSelectedRow();
                        int colEvent = MyCalendarTester.tblCalendar.getSelectedColumn();

                        System.out.print(arrayOfMonths[month].toString() + " ");
                        MyCalendarTester.realDay = Integer.parseInt(MyCalendarTester.tblCalendar.getValueAt(MyCalendarTester.tblCalendar.convertRowIndexToModel(rowEvent),
                                MyCalendarTester.tblCalendar.convertColumnIndexToModel(colEvent)).toString());

                        System.out.print(MyCalendarTester.tblCalendar.getValueAt(MyCalendarTester.tblCalendar.convertRowIndexToModel(rowEvent),
                                MyCalendarTester.tblCalendar.convertColumnIndexToModel(colEvent)) + " ");
                        System.out.println(MyCalendarTester.currentYear);


                        //Apply renderers
                        MyCalendarTester.tblCalendar.setDefaultRenderer(MyCalendarTester.tblCalendar.getColumnClass(0), new tblCalendarRenderer());
                        MyCalendarTester.tblCalendar.getCellRenderer(MyCalendarTester.tblCalendar.convertRowIndexToModel(rowEvent), MyCalendarTester.tblCalendar.convertColumnIndexToModel(colEvent));
                    }

                });
            //Draw calendar
            for (int i=1; i<=nod; i++){
                int row = new Integer((i+som-2)/7);
                int column  =  (i+som-2)%7;
                MyCalendarTester.mtblCalendar.setValueAt(i, row, column);

            }
            //Apply renderers
            MyCalendarTester.tblCalendar.setDefaultRenderer(MyCalendarTester.tblCalendar.getColumnClass(0), new tblCalendarRenderer());

}

static class tblCalendarRenderer extends DefaultTableCellRenderer{
            public Component getTableCellRendererComponent (JTable table, Object value, boolean selected, boolean focused, int row, int column){
                super.getTableCellRendererComponent(table, value, selected, focused, row, column);
                if (column == 0 || column == 6){ //Week-end
                    setBackground(new Color(255, 220, 220));
                }
                else{ //Week
                    setBackground(new Color(255, 255, 255));
                }
                if (value != null){
                    if (Integer.parseInt(value.toString()) == MyCalendarTester.realDay && 
                            MyCalendarTester.currentMonth == MyCalendarTester.realMonth && MyCalendarTester.currentYear == MyCalendarTester.realYear){ //Today
                        setBackground(new Color(220, 220, 255));
                    }
                }
                setBorder(null);
                setForeground(Color.black);
                return this;  
            }
        }

Answer 1

感谢 HovercraftFullOfEels 解决了这个问题!我刚刚添加:

        if(selected && value != null){
            setBackground(new Color(100,200,50));
        }

到渲染器。