Setting focus cell in TableViewer -优快云博客

本文链接：https://blog.youkuaiyun.com/zjf_1103/article/details/83649051

本文探讨了如何在多列表格中通过内部事件而非代码中的激活事件列表来设置单元格焦点的方法，包括表格视图的配置、焦点单元格管理器的使用以及编辑激活策略的实现。

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I would like to find a way to set focus to a cell in a multi-column table
by an internal Process other than the activation events listed in the code
below. One would expect that the setFocusCell(viewerCell) from
TableViewerFocusCellManager from SWTFocusCellManager would get the job
done, but it is not visible.

Suggestions for setting focus and highlighting a cell based on an internal
event?

Here's the set-up code for the TableViewer and related entities:

tableViewer = new TableViewer(parent, SWT.MULTI | SWT.H_SCROLL | 
SWT.V_SCROLL 
| SWT.BORDER | SWT.FULL_SELECTION); 
final Table table = tableViewer.getTable(); 
final TableViewerFocusCellManager mgr = new 
TableViewerFocusCellManager(tableViewer, new 
FocusCellOwnerDrawHighlighter(tableViewer)); 
final ColumnViewerEditorActivationStrategy actSupport = new 
ColumnViewerEditorActivationStrategy(tableViewer) { 
@Override 
protected boolean isEditorActivationEvent 
(ColumnViewerEditorActivationEvent event) { 
return event.eventType == 
ColumnViewerEditorActivationEvent.TRAVERSAL 
|| event.eventType == 
ColumnViewerEditorActivationEvent.MOUSE_CLICK_SELECTION 
|| event.eventType == 
ColumnViewerEditorActivationEvent.KEY_PRESSED 
&& (event.keyCode == SWT.CR || event.character == ' ') 
|| event.eventType == 
ColumnViewerEditorActivationEvent.PROGRAMMATIC; 
} 
}; 

TableViewerEditor.create(tableViewer, mgr, actSupport, 
ColumnViewerEditor.TABBING_HORIZONTAL 
| ColumnViewerEditor.TABBING_MOVE_TO_ROW_NEIGHBOR | 
ColumnViewerEditor.TABBING_VERTICAL 
| ColumnViewerEditor.KEYBOARD_ACTIVATION); 

TableViewerColumn column; 
final int[] styles = { SWT.LEAD, SWT.LEAD, SWT.LEAD, SWT.LEAD, SWT.LEAD, 
SWT.LEAD, SWT.LEAD}; 
for (int columnIndex = 0; columnIndex columnIndex++) { 
column = new TableViewerColumn(tableViewer, styles[columnIndex]); 
// etc. for each column, specifying setLabelProvider and 
setEditingSupport