Question

这是一个显而易见的问题但由于某些原因我找不到有效的解决方案。我有一个包含3列的表，前两个是日期，第三个是我使用Spinner，因为我希望用户只输入数字。我需要所有字段都可以编辑，但是

该字段只有在焦点处于焦点时才可编辑，当点击
同一行中的其他字段不应该是可编辑的
当该字段失去焦点时，它应该返回“默认”模式

这些都是人们在可编辑表格中所期望的正常事物。出于某种原因，我无法在SWT中完成这项工作。现在我所拥有的是：

我添加了一个新行，所有字段都是“默认”
我点击该行，所有字段都变为可编辑（日期字段变为组合框等）。
在失去焦点的行之后，它仍然可以编辑

这是我现在的代码，它基于我在互联网上找到的其他代码：

// this will happen when you click on the table
table.addSelectionListener(new SelectionAdapter() {
    public void widgetSelected(SelectionEvent e) {
        // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        // Clean up any previous editor control
        final TableEditor editor1 = new TableEditor(table);               
        // The editor must have the same size as the cell and must
        // not be any smaller than 50 pixels.
        editor1.horizontalAlignment = SWT.LEFT;
        editor1.grabHorizontal = true;
        editor1.minimumWidth = 50;
        Control oldEditor = editor1.getEditor();
        if (oldEditor != null)
            oldEditor.dispose();                

        // Identify the selected row 
        TableItem item = (TableItem)e.item;
        if (item == null) return;

        // this is the editor for the first column
        DateTime startDateTxt = new DateTime(table, SWT.BORDER | SWT.DROP_DOWN | SWT.LONG);
        startDateTxt.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e) {
                DateTime text = (DateTime)editor1.getEditor();
                editor1.getItem().setText(0, new LocalDate(text.getYear(), text.getMonth(), text.getDay()).toString());
            }
        });
        editor1.setEditor(startDateTxt, item, 0);

        // and now comes the editor for the 2nd column
        //~~~~
        // Clean up any previous editor control
        final TableEditor editor2 = new TableEditor(table);               
        // The editor must have the same size as the cell and must
        // not be any smaller than 50 pixels.
        editor2.horizontalAlignment = SWT.LEFT;
        editor2.grabHorizontal = true;
        editor2.minimumWidth = 50;
        oldEditor = editor2.getEditor();
        if (oldEditor != null)
            oldEditor.dispose();                

        // this is the editor for the second column
        DateTime endDateTxt = new DateTime(table, SWT.BORDER | SWT.DROP_DOWN | SWT.LONG);
        endDateTxt.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e) {
                DateTime text = (DateTime)editor2.getEditor();
                editor2.getItem().setText(1, new LocalDate(text.getYear(), text.getMonth(), text.getDay()).toString());
            }
        });
        editor2.setEditor(endDateTxt, item, 1);

        //~~~~
        // Clean up any previous editor control
        final TableEditor editor3 = new TableEditor(table);               
        // The editor must have the same size as the cell and must
        // not be any smaller than 50 pixels.
        editor3.horizontalAlignment = SWT.LEFT;
        editor3.grabHorizontal = true;
        editor3.minimumWidth = 50;
        oldEditor = editor3.getEditor();
        if (oldEditor != null)
            oldEditor.dispose();                

        // this is the editor for the third column
        Spinner percentTxt = createNewSpinner(table, SWT.NONE);
        percentTxt.addModifyListener(new ModifyListener() {
            public void modifyText(ModifyEvent me) {
                Spinner text = (Spinner)editor3.getEditor();
                editor3.getItem().setText(2, text.getText());
            }
        });  
        editor3.setEditor(percentTxt, item, 2);   
        //~~~~

    }
});

正如您所看到的，当用户点击表格时，我会获得当前行，并在该行中添加3个编辑器。我想做的是获取所选列。我还没有找到如何做到这一点。如果我得到所选列，那么我将能够为所选单元格创建一个编辑器，而不是整行。

在失去焦点之后，我还没有弄清楚如何处理编辑器。如果用户点击表外，则显然已经发生了。但是，如果用户只是点击另一个单元格怎么办？然后我将不得不处理旧编辑器并创建一个新编辑器。

Answer 1

要获取所选列，您可以为每列调用TableItem.getBounds(columnIndex)，并查看所选内容是否在返回的矩形内。

带有日期选择器字段的SWT表

1 个答案: