TableViewer_TreeViewer

最新推荐文章于 2023-11-23 22:03:59 发布

liuxiaobinaaa

最新推荐文章于 2023-11-23 22:03:59 发布

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分类专栏： n_i_g_u_l_P 文章标签：开发工具

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本文介绍如何在SWT的TableViewer中实现单元格的双击编辑功能，通过自定义激活策略和编辑支持来实现对特定列的编辑操作。

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SWT中设置TableViewer和TreeViewer成为双击编辑
博客分类： eclipse plugin

TableViewerEditor.create(viewer, new DoubleClickColumnViewerEditorActivationStrategy(viewer), ColumnViewerEditor.DEFAULT);

class DoubleClickColumnViewerEditorActivationStrategy extends ColumnViewerEditorActivationStrategy {
public DoubleClickColumnViewerEditorActivationStrategy(ColumnViewer viewer) {
super(viewer);
}

/**
* 設置編輯器觸發方式
*/
@Override
protected boolean isEditorActivationEvent(ColumnViewerEditorActivationEvent event) {
boolean singleSelect = ((IStructuredSelection) getViewer().getSelection()).size() == 1;
return singleSelect
&& (event.eventType == ColumnViewerEditorActivationEvent.MOUSE_DOUBLE_CLICK_SELECTION
|| event.eventType == ColumnViewerEditorActivationEvent.PROGRAMMATIC || event.eventType == ColumnViewerEditorActivationEvent.TRAVERSAL);
}
}
覆盖isEditorActivationEvent方法，加上event.eventType == ColumnViewerEditorActivationEvent.MOUSE_DOUBLE_CLICK_SELECTION条件。

tableViewerColumn_1.setEditingSupport(new EditingSupport(

tableViewerColumn_1.getViewer()) {

@Override

protected CellEditor getCellEditor(Object element) {

// TODO Auto-generated method stub

if (element instanceof Department) {

Department dep = (Department) element;

TextCellEditor textCell = new TextCellEditor(table);

textCell.setValue(dep.getDmanager());

return textCell;

}

return null;

}

@Override

protected boolean canEdit(Object element) {

// TODO Auto-generated method stub

if (element instanceof Department) {

return true;

}

return false;

}

@Override

protected Object getValue(Object element) {

// TODO Auto-generated method stub

if (element instanceof Department) {

Department dep = (Department) element;

return dep.getDmanager();

}

return null;

}

@Override

protected void setValue(Object element, Object value) {

// TODO Auto-generated method stub

if (element instanceof Department) {

Department dep = (Department) element;

dep.setDmanager(value.toString());

getViewer().refresh();

}

}

});

总结

关键代码就这两行

1：向viewer绑定一种启动编辑的入口（如：是双击、单机、键盘都可以在这个类中区定义）DoubleClickColumnViewerEditorActivationStrategy

TableViewerEditor.create(viewer, new DoubleClickColumnViewerEditorActivationStrategy(viewer), ColumnViewerEditor.DEFAULT);

这行代码是为哪列设置为可编辑的，并设置一个EditingSupport

tableViewerColumn_1.setEditingSupport(new EditingSupport(