swt/jface第六天 table

重点内容：
   tableViewer
内容：
   创建tableviewer
   三种构造方法：
     1。TableViewer(Composite parent)
     2.TableViewer(Composite parent,int style);
     3.TableViewer(Table table)
通过table.getTable()可以获得Table对象
TableViewer将组织和显示的数据交给了两个接口，
           IcontentProvider : 负责将SETinput方法传入的对象转成表格所需要的对象。
                    |-- IStructuredContentProvider
            IBaseLabelProvider
       |--ITableLabelProvider:负责处理表如如保显示数.

一般步骤：
               // 创建TableView
  table = new TableViewer(parent, SWT.FULL_SELECTION);
  // 创建表头
  for (int i = 0; i < COLUMN_NAME.length; i++) {
   new TableColumn(table.getTable(), SWT.LEFT).setText(COLUMN_NAME[i]);
   table.getTable().getColumn(i).pack();
  }
  // 设置表头与表格线可见
  table.getTable().setHeaderVisible(true);
  table.getTable().setLinesVisible(true);
  // 设置视图
  table.setContentProvider(new MyContentProvider());

  table.setLabelProvider(new MylabelProvider());
  //
  table.setInput(persons);

加菜单时易错地方：
private Menu md; //要定义全局变量
private TableViewer table; //目标表格。action初始化要用。
private List persons; //表格结构实数据.
//PersonEO person = (PersonEO) element;实体结构类
//下面生成菜单
    private void createContextMenu(Composite parent) {
  MenuManager menuManager = new MenuManager();
  menuManager.add(new addAction(table));
  menuManager.add(new DelAction(table));
  md = menuManager.createContextMenu(parent);
  table.getTable().setMenu(md);
}
  protected Control createContents(Composite parent) {
  // 创建TableView
  table = new TableViewer(parent, SWT.FULL_SELECTION);
  // 创建表头
  for (int i = 0; i < COLUMN_NAME.length; i++) {
   new TableColumn(table.getTable(), SWT.LEFT).setText(COLUMN_NAME[i]);
   table.getTable().getColumn(i).pack();
  }
  // 设置表头与表格线可见
  table.getTable().setHeaderVisible(true);
  table.getTable().setLinesVisible(true);
  // 设置视图
  table.setContentProvider(new MyContentProvider());

  table.setLabelProvider(new MylabelProvider());
  //
  table.setInput(persons);
  table.addDoubleClickListener(new IDoubleClickListener() {
   public void doubleClick(DoubleClickEvent event) {
    StructuredSelection selection = (StructuredSelection) event
      .getSelection();
    PersonEO personEO = (PersonEO) selection.getFirstElement();
    MessageBox mb = new MessageBox(getShell(), SWT.YES);
    mb.setMessage(personEO.getName().toString());
    mb.open();
   }
  });

createContextMenu(parent); //这句很重要，
return parent;

}
Action操作注意：
要把上面主程中的TABLE传入action操作：

public class addAction extends Action {
TableViewer table; //接收目标table

public addAction(TableViewer table) {
this.table = table;
setText("新建");

}

@Override
public void run() {
  PersonEO personEO = new PersonEO();
  personEO.setId(table.getTable().getItemCount() + 1);
  personEO.setName("keim");
  personEO.setGender("女");
  personEO.setColor("红色");
  table.add(personEO);
}

}

主程式代码：

package com.cmo.mes.table;

import java.awt.Dialog;
import java.util.ArrayList;
import java.util.List;

import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.window.ApplicationWindow;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TableColumn;

public class TableWindow extends ApplicationWindow {
private Menu md;
private TableViewer table;
private List persons;
public static final int ID = 0;
public static final int NAME = 1;
public static final int GENDER = 2;
public static final int COLOR = 3;

public static final String[] COLUMN_NAME = { "ID号", "姓名", "性别", "COLOR" };

public TableWindow() {
  super(null);
  initPersons();
  // TODO Auto-generated constructor stub
}

private void initPersons() {
  persons = new ArrayList();
  persons.add(new PersonEO(1, "ZQM", "男", "灰色"));
  persons.add(new PersonEO(2, "cxh", "男", "灰色"));

}

@Override
protected void configureShell(Shell shell) {
  // TODO Auto-generated method stub
  super.configureShell(shell);
  shell.setSize(300, 200);
  shell.setText("table view 程序示列");
}

protected Control createContents(Composite parent) {
  // 创建TableView
  table = new TableViewer(parent, SWT.FULL_SELECTION);
  // 创建表头
  for (int i = 0; i < COLUMN_NAME.length; i++) {
   new TableColumn(table.getTable(), SWT.LEFT).setText(COLUMN_NAME[i]);
   table.getTable().getColumn(i).pack();
  }
  // 设置表头与表格线可见
  table.getTable().setHeaderVisible(true);
  table.getTable().setLinesVisible(true);
  // 设置视图
  table.setContentProvider(new MyContentProvider());

createContextMenu(parent);
return parent;

}

private void createContextMenu(Composite parent) {
  MenuManager menuManager = new MenuManager();
  menuManager.add(new addAction(table));
  menuManager.add(new DelAction(table));
  md = menuManager.createContextMenu(parent);
  table.getTable().setMenu(md);
}

public static void main(String[] args) {
TableWindow test = new TableWindow();

test.setBlockOnOpen(true);
test.open();

Display.getCurrent().dispose();

}

自定义类MylabelProvider ：

package com.cmo.mes.table;

import java.util.List;

import org.eclipse.jface.viewers.IBaseLabelProvider;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;

import com.cmo.mes.table.TableWindow;
import com.sun.org.apache.bcel.internal.generic.RETURN;

public class MylabelProvider implements ITableLabelProvider {

@Override
public Image getColumnImage(Object element, int columnIndex) {
return null;
}

@Override
public String getColumnText(Object element, int columnIndex) {
  PersonEO person = (PersonEO) element;
  if (columnIndex == TableWindow.ID) {
   return person.getId() + "";
  } else if (columnIndex == TableWindow.NAME) {
   return person.getName();
  } else if (columnIndex == TableWindow.COLOR) {
   return person.getColor();
  } else if (columnIndex == TableWindow.GENDER) {
   return person.getGender();
  } else {
   return "";
  }

}

@Override
public void addListener(ILabelProviderListener listener) {
// TODO Auto-generated method stub

}

@Override
public void dispose() {
// TODO Auto-generated method stub

}

@Override
public boolean isLabelProperty(Object element, String property) {
// TODO Auto-generated method stub
return false;
}

@Override
public void removeListener(ILabelProviderListener listener) {
// TODO Auto-generated method stub

}

自定义类MyContentProvider ：

package com.cmo.mes.table;

import java.util.List;

import org.eclipse.jface.viewers.IContentProvider;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.Viewer;

public class MyContentProvider implements IStructuredContentProvider {

@Override
// 将初始化数据的入口对象转换成表格使用的数组对象
public Object[] getElements(Object inputElement) {
// TODO Auto-generated method stub

return ((List) inputElement).toArray();
}

@Override
// 释放该对象
public void dispose() {
// TODO Auto-generated method stub

}

@Override
// 当表格中有数据改变时调用该方法。
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
// TODO Auto-generated method stub

}

add action 代码：

package com.cmo.mes.table;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.widgets.Table;

public class addAction extends Action {
TableViewer table;

public addAction(TableViewer table) {
this.table = table;
setText("新建");

}

deleteaction 代码：

package com.cmo.mes.table;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuCreator;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.events.HelpListener;
import org.eclipse.swt.widgets.Event;

public class DelAction extends Action {
TableViewer table;

public DelAction(TableViewer table) {
setText("删除");
this.table = table;
}

@Override
public void run() {
  StructuredSelection selctioSelection = (StructuredSelection) table
    .getSelection();
  PersonEO personEO = (PersonEO) selctioSelection.getFirstElement();
  table.remove(personEO);

}
}

实体类：

package com.cmo.mes.table;

public class PersonEO {
private int id;
private String name;
private String gender;

public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getGender() {
return gender;
}

public void setGender(String gender) {
this.gender = gender;
}

public String getColor() {
return color;
}

public void setColor(String color) {
this.color = color;
}

private String color;

public PersonEO(int id, String name, String gender, String color) {
  super();
  this.id = id;
  this.name = name;
  this.gender = gender;
  this.color = color;
}

public PersonEO() {
super();
}

}