对单个列禁用JTable的默认键绑定

Question

I'm using autocomplete in my JTable column which uses the up and down key to move so as the JTable how can I disable up and down keybinding of JTable just for that column and again resume its functionality for next columns.

table.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT)
     .put(KeyStroke.g   etKeyStroke(KeyEvent.VK_UP, 0), "UP");
table.getActionMap()
     .put("UP", new AbstractAction() {
        @Override
        public void actionPerformed(ActionEvent ae) {
        //do something on JTable enter pressed
        }
      });

now I have use this code in if codition to disable the up key but as soon as the control comes out of if conditon i want the default behaviour of up key which is not happning

Answer 1

Column and row sensitivity is a tricky thing with JTables; but it is queryable. TableColumn objects do not extend Component , so you cannot simply add an action listener to them. However, just adding this once:

new AbstractAction() {
    @Override
    public void actionPerformed(ActionEvent ae) {
        //Following line is untested code, but you get the idea:
        if(!Arrays.asList(table.getSelectedColumns()).contains([your column number]) {
            //perform up action
        }
    }
}

should do the job, and it's probably more efficient than adding and removing an anonymous class to your JTable. (To Swing/AWT, columns all look the same.)

Again I apologize for not testing this code personally, I'm on my way out the door for a two day trip. My core point is that your best option is to query the column in the ActionListener after the method is called, with a simple boolean test.

Answer 2

I'm using autocomplete in my JTable column

This implies that some component other that JTable has focus. Therefore you would add your custom Key Bindings to that component, not the JTable. Then those Key Bindings will have priority over the key bindings in the table.