JTable-复合编辑器焦点 [英] JTable - compound editor focus

问题描述

我有一个由几个组件组成的自定义编辑器.像这样:

class MyCellEditor extends AbstractCellEditor implements TableCellEditor {
    JTextArea textArea;
    JButton button;
    JPanel panel;

    MyCellEditor() {
        textArea = new JTextArea();
        button = new JButton();
        panel = new JPanel(new BorderLayout());
        panel.add(textArea, BorderLayout.CENTER);
        panel.add(button, BorderLayout.EAST);
    }

    public Component getTableCellEditorComponent(JTable table, Object value,
            boolean isSelected, int row, int column) {
        textArea.setText((String) value);
        return panel;
    }

    public Object getCellEditorValue() {
        return textArea.getText();
    }
}

我希望内部的textArea在开始编辑时能抓住焦点.当我单击该单元格时，它的效果很好，但是当我使用键盘导航该表并开始在此单元格中键入内容时，效果不佳.

我该如何解决?

解决方案

前段时间，我遇到了同样的问题，花了我很长时间才找到解决方案.在focuslistener和东西上进行了很多尝试，但是直到我发现此 Santhosh Kumar的有用文章.

它写得很好，应该可以解决您的问题.

I have a custom editor composed of several components. Something like:

class MyCellEditor extends AbstractCellEditor implements TableCellEditor {
    JTextArea textArea;
    JButton button;
    JPanel panel;

    MyCellEditor() {
        textArea = new JTextArea();
        button = new JButton();
        panel = new JPanel(new BorderLayout());
        panel.add(textArea, BorderLayout.CENTER);
        panel.add(button, BorderLayout.EAST);
    }

    public Component getTableCellEditorComponent(JTable table, Object value,
            boolean isSelected, int row, int column) {
        textArea.setText((String) value);
        return panel;
    }

    public Object getCellEditorValue() {
        return textArea.getText();
    }
}

I want the inner textArea to grab focus when editing starts. It works just fine when I click the cell, but not when I navigate the table with keyboard and start typing in this cell.

How can I fix this?

解决方案

I had the same problem some time ago and took me ages to find a solution. Tried a lot with focuslistener and stuff, but nothing really seemed to work the way I wanted it to until I found this useful article by Santhosh Kumar.

Its well written and should fix your problem.

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