TableViewer, TreeViewer双击编辑

在TreeViewer或TableViewer中，可用CellEditor结合CellModifier可以很实现表格的编辑功能
但是默认的是单击，就会打开编辑区域。有时候我们会需要双击进行（或者其他），于是我写了一个
DoubleCellModifier，只要让你的CellModifier继承它，就可以很方便实现双击编辑。

具体代码如下：

java 代码

package com.longthsoft.rcppart.ui;

import org.eclipse.jface.viewers.ICellModifier;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.widgets.Item;

public abstract class DoubleClickCellModifier implements ICellModifier {

    private boolean doubleClick;
    private Object element;
    private String property;

    public DoubleClickCellModifier(final TableViewer tableViewer) {
        tableViewer.getTable().addMouseListener(new MouseAdapter() {
            @Override
            public void mouseDoubleClick(MouseEvent e) {
                if (allowModify(element, property)) {
                    int column = UIUtil.getPropertyColumnIndex(tableViewer, property);
                    doubleClick = true;
                    tableViewer.editElement(element, column);
                    doubleClick = false;
                }
            }
        });
    }

    public DoubleClickCellModifier(final TreeViewer treeViewer) {
        treeViewer.getTree().addMouseListener(new MouseAdapter() {
            public void mouseDoubleClick(MouseEvent e) {
                if (allowModify(element, property)) {
                    int column =UIUtil.getPropertyColumnIndex(treeViewer, property);
                    doubleClick = true;
                    treeViewer.editElement(element, column);
                    doubleClick = false;
                }
            }
        });
    }

    public boolean canModify(Object element, String property) {
        this.element = element;
        this.property = property;
        if (doubleClick) {
            return true;
        } else {
            return false;
        }
    }

    public void modify(Object element, String property, Object value) {
        if (element instanceof Item) {
            element = ((Item) element).getData();
        }
        doModify(element, property, value);
    }

    public boolean allowModify(Object element, String property) {
        return true;
    }

    public abstract void doModify(Object element, String property, Object value);
}