JCombobox 包含表内的枚举值

发布于 2024-08-30 08:15:50 字数 1149 浏览 2 评论 0原文

我有一个包含带有值的枚举的类。（姓名）在其他课程中，我想在表中输入将使用这些枚举值的 JCombobox 单元格类型。我的问题是在字符串值和枚举之间进行组合。例如枚举类：

<块引用>
枚举 item_Type {主菜、main_Meal、甜点、饮料}

例如表类： setTitle("添加新项目" ); 设置大小(300, 80); setBackground( 颜色. 灰色 );

    // Create a panel to hold all other components
    topPanel = new JPanel();
    topPanel.setLayout( new BorderLayout() );
    getContentPane().add( topPanel );

    //new JComboBox(item_Type.values());
    JComboBox aaa = new JComboBox();
    aaa = new JComboBox(item_Type.values());
    TableColumn sportColumn = table.getColumnModel().getColumn(2);

    // Create columns names
    String columnNames[] = {"Item Description", "Item Type", "Item Price"};

    // Create some data
    String dataValues[][] = {{ "0", aaa, "0" }};
    // Create a new table instance
    table = new JTable( dataValues, columnNames );

    // Add the table to a scrolling pane
    scrollPane = new JScrollPane( table );
    topPanel.add( scrollPane, BorderLayout.CENTER );

我知道在 dataValues 数组中我不能使用 aaa （枚举 jcombobox）。我怎样才能做到这一点？

提前致谢。

原文

I have a class containing Enum with values. (names)
In other class I would like to enter inside a table a cell type of JCombobox that will use these enums values.
my problem is to combain between string values and the enum.
for example the enum class:

enum item_Type {entree, main_Meal, Dessert, Drink}

for example the table class:
setTitle("Add new item" );
setSize(300, 80);
setBackground( Color.gray );

    // Create a panel to hold all other components
    topPanel = new JPanel();
    topPanel.setLayout( new BorderLayout() );
    getContentPane().add( topPanel );

    //new JComboBox(item_Type.values());
    JComboBox aaa = new JComboBox();
    aaa = new JComboBox(item_Type.values());
    TableColumn sportColumn = table.getColumnModel().getColumn(2);

    // Create columns names
    String columnNames[] = {"Item Description", "Item Type", "Item Price"};

    // Create some data
    String dataValues[][] = {{ "0", aaa, "0" }};
    // Create a new table instance
    table = new JTable( dataValues, columnNames );

    // Add the table to a scrolling pane
    scrollPane = new JScrollPane( table );
    topPanel.add( scrollPane, BorderLayout.CENTER );

I know that at the dataValues array I cant use aaa (the enum jcombobox).
How can I do that?

thanks in advance.

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多谢你的绝情让我学会死心 2024-09-06 08:15:50

您需要设置一个 TableCellEditor在 JTable 上显示组合框。

TableColumn column = table.getColumnModel().getColumn(2);
column.setCellEditor(new DefaultCellEditor(aaa));

在您的 dataValues 数组中，只需为组合框使用占位符：

String dataValues[][] = {{ "0", "entree", "0" }};

当然，您需要在创建表之后设置列编辑器：

String dataValues[][] = {{ "0", "entree", "0" }};
JTable table = new JTable(dataValues, columnNames);
TableColumn column = table.getColumnModel().getColumn(2);
column.setCellEditor(new DefaultCellEditor(aaa));

我强烈建议您查看如何使用表格教程，如果你还没有的话。它更详细地解释了这一点，并包含示例代码。

You need to set a TableCellEditor on the JTable to display the combo box.

TableColumn column = table.getColumnModel().getColumn(2);
column.setCellEditor(new DefaultCellEditor(aaa));

In your dataValues array, just use a placeholder for the combo box:

String dataValues[][] = {{ "0", "entree", "0" }};

You will, of course, need to set the column editor after creating the table:

String dataValues[][] = {{ "0", "entree", "0" }};
JTable table = new JTable(dataValues, columnNames);
TableColumn column = table.getColumnModel().getColumn(2);
column.setCellEditor(new DefaultCellEditor(aaa));

I highly recommend that you take a look at the How to Use Tables tutorial, if you haven't already. It explains this in greater detail, and includes sample code.

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