Question

有人可以告诉我如何将下拉组合框定义为其中的单元格抽象表模型中的一行，是Java新手，所以真的不知道如何做到这一点。这将成为第一个Cell，如下所示：E.g Combo Box

我的代码如下。

public static Object[][] data
        = {
           {Combo Box, new Double(5), new Double(5)},
           {Combo Box,new Double(5), new Double(5)},
           {Combo Box, new Double(5), new Double(5)},
           {Combo Box, new Double(5), new Double(5)},
      }

谢谢Simon

Answer 1

查看：http://www.java2s.com/Code/Java/Swing-Components/ComboBoxTable.htm

protected Object[][] data = new Object[][] {
      { "Core Java Volume 1", validStates[0] },
      { "Core Java Volume 2", validStates[0] },
      { "Core Web Programming", validStates[0] },
      { "Core Visual Basic 5", validStates[0] },
      { "Core Java Foundation Classes", validStates[0] }
    };

Answer 2

假设您正在使用SWT。

Table table = new Table(parent, SWT.MULTI | SWT.BORDER | SWT.FULL_SELECTION);
TableViewer tableViewer = new TableViewer(table);

// these properties are used to denote a column in the cell modifier
tableViewer.setColumnProperties(new String[] { "column1", "column2" });

tableViewer.setContentProvider(new IStructuredContentProvider(){
    public Object[] getElements(Object input) {
        // return an array of objects that represent row data. 
    }
    public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
        // update with modified value
    }
});

tableViewer.setCellEditors(new CellEditor[] { 
    new ComboBoxCellEditor(table, new String[]{"label 1", "label 2"}),
    new TextCellEditor(table), 
    new TextCellEditor(table) 
});

tableViewer.setCellModifier(new ICellModifier() {
    public boolean canModify(Object pDataElement, String property) {
        return true;
    }
    public Object getValue(Object pRowElement, String property) {
        // return value from row element that corresponds to the column property
        // column1... etc..
        // confusingly, if the column is a combo box, 
        // the returned value needs to be the index of the item selected, 
        // not the value  
    }
    public void modify(Object pDataElement, String property, Object value) {
        // similar to get value, this will give new values to update the model.  
        // if the cell is a combo box editor, value will be an index, not the 
        // selected label
    }
});

在java中的抽象表模型中定义下拉组合框

2 个答案: