myactiongroup.java

这是我做的一个收发邮件的软件

package source;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.Iterator;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.ActionContributionItem;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.action.ToolBarManager;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.CheckboxTableViewer;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.ui.actions.ActionGroup;

public class MyActionGroup extends ActionGroup {
    private TableViewer tv;

    private CheckboxTableViewer ctv;
    
    private Display display;
    
    protected Shell shell;
    

    /**
     * 用来接受TableViewer对象的构造函数。因为在Action会要使用到TableViewer对象 所以一定要把TableViewer传进来。
     */
    public MyActionGroup(TableViewer tableViewer,Shell parent,Display display) {
        this.tv = tableViewer;
    }

    public MyActionGroup(TableViewer v, CheckboxTableViewer ctv,Shell parent,Display display) {
        this.tv = v;
        this.ctv = ctv;
    }

    /**
     * 生成菜单Menu，并将两个Action传入
     */
    public void fillContextMenu(IMenuManager mgr) {
        /*
         * 加入两个Action对象到菜单管理器
         */
        MenuManager menuManager = (MenuManager) mgr; //类型转换一下，注意参数是接口
        menuManager.add(new RefreshAction());
        /*
         * 生成Menu并挂在表格table上。menu和table两个对象互为对方的参数。
         */
        Table table = tv.getTable();


    }




    private final class addAction extends Action {
        public addAction() {
            //给Action设置图像。getImageDesc为自定义方法，得到一个图像
            setHoverImageDescriptor(getImageDesc("add.gif"));
            setText("添加");
        }

        public void run() {
        	new AddPeople(shell,display);

        	
        }
    }


    private final class RefreshAction extends Action {
        public RefreshAction() {
            //给Action设置图像。getImageDesc为自定义方法，得到一个图像
            setHoverImageDescriptor(getImageDesc("refresh.gif"));
            setText("刷新");
        }

        public void run() {
        	tv.setInput(PeopleFactory.getPeoples());
            tv.refresh();
        }
    }

    private class RemoveAction extends Action {
        public RemoveAction() {
            //正常情况下的图标
            setHoverImageDescriptor(getImageDesc("remove.gif"));
            //置灰（removeAction.setEnabled(false)）情况下的图标
            setDisabledImageDescriptor(getImageDesc("disremove.gif"));
            setText("删除");
        }

        /**
         * 这里演示了如何从表格中删除所选的记录（可选多个）
         */
        public void run() {
            if (ctv != null) {
                Object[] checkObj = ctv.getCheckedElements(); //取得打勾的记录
                if (checkObj.length == 0) //判断是否有勾选复选框
                    MessageDialog.openInformation(null, "提示", "请先选择");
                for (int i = 0; i < checkObj.length; i++) {
                    PeopleEntity o = (PeopleEntity) checkObj[i];
                    long id=0;
                    String strl=o.getId().toString();
                    id=(long)Integer.parseInt(strl);
                    DataBase db=new DataBase();
                    db.connectToDB();
                    String sql="";
                    sql="delete from people where id="+id;
                    db.executeDelete(sql);
                    db.close();
                    tv.setInput(PeopleFactory.getPeoples());
                    tv.refresh();
                    ctv.remove(o);
                    
                }
            } else {
                //得到选择的对象集
                IStructuredSelection s = (IStructuredSelection) tv.getSelection();
                if (s.isEmpty())
                    MessageDialog.openInformation(null, "提示", "请先选择");
                else
                    for (Iterator it = s.iterator(); it.hasNext();) {
                        PeopleEntity o = (PeopleEntity) it.next();
                        long id=0;
                        String strl=o.getId().toString();
                        id=(long)Integer.parseInt(strl);
                        DataBase db=new DataBase();
                        db.connectToDB();
                        String sql="";
                        sql="delete from people where id="+id;
                        db.executeDelete(sql);
                        db.close();
                        tv.setInput(PeopleFactory.getPeoples());
                        tv.refresh();
                        tv.remove(o);
                    }
            }
        }
    }

    private class FirstAction extends Action {
        public FirstAction() {
            setHoverImageDescriptor(getImageDesc("first.gif"));
            setText("首页");
        }

        public void run() {
        }
    }

    private class PrevAction extends Action {
        public PrevAction() {
            this.setHoverImageDescriptor(getImageDesc("prev.gif"));
            setText("上一页");
        }

        public void run() {
        }
    }

    private class NextAction extends Action {
        public NextAction() {
            this.setHoverImageDescriptor(getImageDesc("next.gif"));
            setText("下一页");
        }

        public void run() {
        }
    }

    private class LastAction extends Action {
        public LastAction() {
            setHoverImageDescriptor(getImageDesc("last.gif"));
            setText("末页");
        }

        public void run() {
        }
    }

    //新增的“全选”Action
    private class SelectAllAction extends Action {
        public SelectAllAction() {
            setHoverImageDescriptor(getImageDesc("selectall.gif"));
            setText("全选");
        }

        public void run() {
            if (ctv != null)
                ctv.setAllChecked(true); //将所有复选框打勾
        }
    }

    //新增的“全不选”Action
    private class DeselectAction extends Action {
        public DeselectAction() {
            setHoverImageDescriptor(getImageDesc("deselect.gif"));
            setText("全不选");
        }

        public void run() {
            if (ctv != null)
                ctv.setAllChecked(false); //取消所有复选框打勾
        }
    }

    /**
     * 得到一个图像的方法
     */
    public ImageDescriptor getImageDesc(String fileName) {
        try {
            URL url = new URL("file:icons/" + fileName);
            return ImageDescriptor.createFromURL(url);
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 自定义方法。生成六个Action对象，并通过工具栏管理器ToolBarManager填充进工具栏
     */
    public void fillActionToolBars(ToolBarManager actionBarManager) {
        //生成按钮，按钮就是一个个的Action
        Action removeAction = new RemoveAction();
        Action addAction = new addAction();
        Action refreshAction = new RefreshAction();
        Action firstAction = new FirstAction();
        Action preAction = new PrevAction();
        Action nextAction = new NextAction();
        Action lastAction = new LastAction();
        Action selAllAction = new SelectAllAction();
        Action deselAction = new DeselectAction();

        actionBarManager.add(createActionContributionItem(removeAction));
        actionBarManager.add(createActionContributionItem(addAction));
        actionBarManager.add(createActionContributionItem(refreshAction));
        actionBarManager.add(createActionContributionItem(firstAction));
        actionBarManager.add(createActionContributionItem(preAction));
        actionBarManager.add(createActionContributionItem(nextAction));
        actionBarManager.add(createActionContributionItem(lastAction));
        actionBarManager.add(createActionContributionItem(selAllAction));
        actionBarManager.add(createActionContributionItem(deselAction));
        //更新工具栏。没有这一句，工具栏上会没有任何显示
        actionBarManager.update(true);
    }


    ActionContributionItem createActionContributionItem(IAction action) {
        ActionContributionItem aci = new ActionContributionItem(action);
        aci.setMode(ActionContributionItem.MODE_FORCE_TEXT);//显示图像+文字
        return aci;
    }

}