Swt/Jface tableViewer入门教程三(加入在表格上直接编辑数据)

 

前边实现了一个表格的基本功能，但这并不够好，能否为表格实现一些更好的功能呢？答案是肯定的。下边我们来加入直接编辑的功能。
一、要实现这个功能必须提供一个实现ICellModifier的类。内容如下
import org.eclipse.jface.viewers.ICellModifier;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.widgets.TableItem;

public class MyCellModifier implements ICellModifier{
        private TableViewer tv;
        public static String[] NAMES ={"张三","李四","小红","翠花"};
       
        public MyCellModifier(TableViewer tv){
                this.tv = tv;
        }
        public boolean canModify(Object element, String property) {
            return true;
        }

        public Object getValue(Object element, String property) {
            People p = (People)element;
            if(property.equals("name")){
                return new Integer(getNameIndex(p.getName()));
            }else if(property.equals("sex")){
                return new Boolean(p.getSex().equals("男"));
            }else if(property.equals("age")){
                return String.valueOf(p.getAge());
            }
            throw new RuntimeException("error column name : " + property);
        }
        private int getNameIndex(String name){
            for(int i=0;i<NAMES.length;i++){
                if(NAMES[i].equals(name)){
                    return i;
                }
            }
            return -1;
        }

        public void modify(Object element, String property, Object value) {
            TableItem item = (TableItem)element;
            People p = (People)item.getData();
            if (property.equals("name")){
                Integer comboIndex = (Integer)value;
                if(comboIndex.intValue() == -1){
                    return ;
                }
                String newName = NAMES[comboIndex.intValue()];
                p.setName(newName);
            }else if(property.equals("sex")){
                Boolean newValue = (Boolean)value;
                System.out.println(newValue);
                if(newValue.booleanValue()){
                    p.setSex("男");
                }else{
                    p.setSex("女");
                }
            }else if (property.equals("age")){
                String newValue = (String)value;
                if(newValue.equals("")){
                    return ;
                }
                Integer newAge = new Integer(newValue);
                p.setAge(newAge);
            }else{
                throw new RuntimeException("错误列名:" + property);
            }
            tv.update(p, null);
        }
       
    }
二、好了，有了这个类，下一部就是如何把它和TestTableViewer关联起来，在TestTableViewer中setInput()后加入如下内容
tableViewer.setColumnProperties(new String[]
http://www.blogjava.net/Files/dreamstone/jface-3.rar