eclipse rcp：如何在tableviewer中選擇單個單元格？

Question

hwo是否可以更改表格的默認選擇行爲，我想在用戶單擊它時選中一個單元格，並在用戶雙擊它時使其可編輯。

與@nonty的幫助，我得到我想要的。

這裏是我的手機熒光筆FPGA實現：

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); 
    } 



} 

代碼使用它：

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); 

但我得到了新的問題：
當我雙擊單元格以編輯它的價值，在細胞左側還有一點區域仍然用深藍色突出顯示

我知道爲什麼：
當使用邊框創建文本控件時，操作系統會在控件的內容周圍包含一個特定於平臺的插件。
仍然尋求固定...

Answer 1

看一看這兩個JFace的片段：

• Snippet036FocusBorderCellHighlighter - 通過重點邊框呈現出一次的靈活性，凸顯當前選定的細胞表現出鍵盤導航新的電池導航支持
• Snippet034CellEditorPerRowNewAPI - 在一個專欄演示不同CellEditor的類型與JFace的，觀衆的3.3 API

Answer 2

通過代碼挖掘後，我發現下面的方法在ColumnViewer類：

/** 
* Hook up the editing support. Subclasses may override. 
* 
* @param control 
*  the control you want to hook on 
*/ 
protected void hookEditingSupport(Control control) { 
    // Needed for backwards comp with AbstractTreeViewer and TableTreeViewer 
    // who are not hooked this way others may already overwrite and provide 
    // their 
    // own impl 
    if (viewerEditor != null) { 
     control.addMouseListener(new MouseAdapter() { 
      public void mouseDown(MouseEvent e) { 
       // Workaround for bug 185817 
       if (e.count != 2) { 
        handleMouseDown(e); 
       } 
      } 

      public void mouseDoubleClick(MouseEvent e) { 
       handleMouseDown(e); 
      } 
     }); 
    } 
} 

於是，我不顧我的TableViewer子內的功能：

@Override protected void hookEditingSupport(Control control) { 
    // We know there should be an editor avaiable 
// if (viewerEditor != null) { 
     control.addMouseListener(new MouseAdapter() { 
      public void mouseDown(MouseEvent e) { 
       // Workaround for bug 185817 
       if (e.count != 2) { 
        // We don't want to edit on single clicks 
//     handleMouseDown(e); 
       } 
      } 

      public void mouseDoubleClick(MouseEvent e) { 
       // This method is private, so copy the implementation 
//    handleMouseDown(e); 
       ViewerCell cell = getCell(new Point(e.x, e.y)); 
       e.count--; // A hack to make things work - pretend like it's a single click 
       if (cell != null) { 
        triggerEditorActivationEvent(new ColumnViewerEditorActivationEvent(
          cell, e)); 
       } 
      } 
     }); 
// } 
} 

這對我的作品。告訴我它是否適合你。