eclipse rcp：如何在tableviewer中选择单个单元格？ [英] eclipse rcp :how to select a single cell in tableviewer?

问题描述

我可以更改表的默认选择行为吗，我想在用户单击时选择一个单元格，并在用户双击时使其可编辑。

hwo can I change the default selection behaviour of tables, I want to make a cell selected when user click it and make it editable when user double click it.

在@nonty的帮助下，我得到了我想要的。



是我的单元突出显示工具的实现：

with @nonty 's help, I get what I want.

here is my cell highlighter implemention:

package com.amarsoft.rcputil;

import org.eclipse.jface.viewers.ColumnViewer;
import org.eclipse.jface.viewers.FocusCellOwnerDrawHighlighter;
import org.eclipse.jface.viewers.ViewerCell;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;


public class DefaultCellFocusHighlighter extends FocusCellOwnerDrawHighlighter {

    public DefaultCellFocusHighlighter(ColumnViewer viewer) {
        super(viewer);
    }

    protected boolean onlyTextHighlighting(ViewerCell cell) {
        return false;
    }

    protected Color getSelectedCellBackgroundColor(ViewerCell cell) {
        return cell.getControl().getDisplay().getSystemColor(SWT.COLOR_DARK_BLUE);
    }

    protected Color getSelectedCellForegroundColor(ViewerCell cell) {
        return cell.getControl().getDisplay().getSystemColor(SWT.COLOR_WHITE);
    }

    protected Color getSelectedCellForegroundColorNoFocus(ViewerCell cell) {
        return cell.getControl().getDisplay().getSystemColor(SWT.COLOR_WHITE);
    }

    protected Color getSelectedCellBackgroundColorNoFocus(ViewerCell cell) {
        return cell.getControl().getDisplay().getSystemColor(SWT.COLOR_DARK_BLUE);
    }

    protected void focusCellChanged(ViewerCell newCell, ViewerCell oldCell) {
        super.focusCellChanged(newCell, oldCell);
    }



}

使用它的代码：

TableViewerFocusCellManager focusCellManager = new TableViewerFocusCellManager(tv,new DefaultCellFocusHighlighter(tv));
        ColumnViewerEditorActivationStrategy actSupport = new ColumnViewerEditorActivationStrategy(tv) {
            protected boolean isEditorActivationEvent(ColumnViewerEditorActivationEvent event) {
                return event.eventType == ColumnViewerEditorActivationEvent.TRAVERSAL
                        || event.eventType == ColumnViewerEditorActivationEvent.MOUSE_DOUBLE_CLICK_SELECTION
                        || (event.eventType == ColumnViewerEditorActivationEvent.KEY_PRESSED && event.keyCode == SWT.CR)
                        || event.eventType == ColumnViewerEditorActivationEvent.PROGRAMMATIC;
            }
        };

        TableViewerEditor.create(tv, focusCellManager, actSupport, ColumnViewerEditor.TABBING_HORIZONTAL
                | ColumnViewerEditor.TABBING_MOVE_TO_ROW_NEIGHBOR
                | ColumnViewerEditor.TABBING_VERTICAL | ColumnViewerEditor.KEYBOARD_ACTIVATION);

但我遇到了新问题：


当我双击单元格以编辑其值时，单元格的左侧有一个小区域仍然用深蓝色突出显示

but I got new problem :
when I double click on cell to edit it's value, there is a little area at the left side of the cell is still highlighted with dark blue color

我知道为什么：

创建带有边框的文本控件时，则该操作系统包括围绕控件内容的特定于平台的插入项。

仍在寻求修复...

I know why :
When a text control is created with a border, the operating system includes a platform specific inset around the contents of the control.
still seeking for fixing...

推荐答案

看看这两个JFace代码段：

Have a look at these two JFace Snippets:

• Snippet036FocusBorderCellHighlighter -通过突出显示当前选中的带有焦点边框的单元格来演示键盘导航，该边框再次显示了新单元格导航支持的灵活性


• Snippet034CellEditorPerRowNewAPI -通过JFace-Viewers的3.3-API在一个列中演示了不同的CellEditor类型。
  

• Snippet036FocusBorderCellHighlighter - Demonstrates keyboard navigation by highlighting the currently selected cell with a focus border showing once more the flexibility of the new cell navigation support
• Snippet034CellEditorPerRowNewAPI - Demonstrates different CellEditor-Types in one COLUMN with 3.3-API of JFace-Viewers

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