在JTable的单元格中开始编辑以获得焦点 [英] Start editing in a cell in JTable on gaining focus

问题描述

Java代码：

我的表格中的两列已经定义了单元格编辑器

  JComboBox combo = new JComboBox（）; 
 //将项目添加到组合框的代码在这里。 
 
 JTextField textField = new JTextField（）; 
 textField.setHorizo​​ntalAlignment（JTextField.RIGHT）; 
 
 TableColumn column = myJTable.getColumnModel（）。getColumn（0）; 
 column.setCellEditor（new DefaultCellEditor（combo））; 
 
 column = myJTable.getColumnModel（）。getColumn（1）; 
 column.setCellEditor（new DefaultCellEditor（textField））; 
  

我正面临的问题是当焦点移动到表格单元格时，变成自动编辑。所以，当焦点移动到第2列（有一个文本字段作为编辑器）时，插入符号不会出现，除非单元格被双击或用户开始键入。第1列（有一个组合框作为编辑器）的情况与此类似，因为组合框除非单击单元格，否则不会出现。这些行为是违反直觉的，并且对于使用键盘的用户来说是不希望的。：（b / b）

请指出如何解决这个问题的指针。 b

在此先感谢。

解决方案

1. href =https://stackoverflow.com/a/10067560/230513>示例覆盖 JTable中的 editCellAt（） / code>有一个 DefaultCellEditor 使用 JTextField 。




2. 您可以将 Space 键绑定到为 JTable startEditing c>：
$ b $ pre $ $ $ $ $ $ $ $ $ $ $ $ $ $ keyStroke.getKeyStroke（KeyEvent.VK_SPACE，0）， startEditing）;


I have defined cell editors for the two columns in my table in the following manner:

Java Code:

JComboBox combo = new JComboBox();
//code to add items to the combo box goes here.

JTextField textField = new JTextField();
textField.setHorizontalAlignment(JTextField.RIGHT);

TableColumn column = myJTable.getColumnModel().getColumn(0);
column.setCellEditor(new DefaultCellEditor(combo));

column = myJTable.getColumnModel().getColumn(1);
column.setCellEditor(new DefaultCellEditor(textField));

The problem I am facing is that when a focus is moved to a table cell, the cell doesn't become automatically editable. So, when the focus is moved to column 2 (that has a text field as an editor), the caret sign doesn't not appear unless the cell is double-clicked or the user starts typing. Similar is the case for column 1 (that has a combo box as an editor) as here the combo box doesn't appear unless the cell is clicked. These behaviors are counter-intuitive and undesirable for a user operating with the keyboard.:(

Please suggest pointers on how this could be resolved.

Thanks in advance.

解决方案

1. This example overrides editCellAt() in a JTable having a DefaultCellEditor using JTextField.

2. You can bind the Space key to the startEditing action defined for JTable:

   table.getInputMap().put(
       KeyStroke.getKeyStroke(KeyEvent.VK_SPACE, 0), "startEditing");
   

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