clipboard.java

一个简单的visio程序。

package HAB.object;

import java.awt.*;
import java.awt.datatransfer.*;
import java.io.*;
import java.util.*;
import java.awt.image.*;
 
import HAB.HcBean.HpException;
import HAB.HcBean.HalcyonAppletBeanInterface;

public class ClipBoard 	 implements  HAB.HcBean.HalcyonAppletBeanInterface ,java.io.Serializable
{
	public static       int  formatstr = 1; // text
	public static       int  formatpic = 2; // bmp      
	static Clipboard clipboardstr = Toolkit.getDefaultToolkit().getSystemClipboard();
   static Clipboard clipboardpic = new Clipboard("image clipboard");
   static ClipboardOwner defaultClipboardOwner = new ClipboardObserver();
	//--------------------- Get...------------------------------
	public static void  Clear()throws HpException
   {
      SetText("");
		formatstr=formatpic=0;
	}
   public static boolean GetFormat(int Format)//return 0 =false -1=true
   {
		if(formatstr == Format)return true;
		else if(formatpic == Format )
			return true;
		else  return false;
	}
	//==================== TEXT ==================
	public static  void  SetText(String textname)throws HpException
   {
		SetText(textname,1);
   }
   public static void SetText(String textname,int Format)throws HpException
   {
      if(!(Format==1 || Format== 0xBF00 || Format==0xBF01))
         throw new HpException(460,"Invalid clipboard format");
		formatstr=Format;
		StringSelection contents = new StringSelection(textname);
      clipboardstr.setContents(contents, defaultClipboardOwner);
	}
	public  static String GetText()throws HpException
	{
		return GetText(1);
	}
	public  static String GetText(int Format)throws HpException
   {
      if(!(Format==1 || Format== 0xBF00 || Format==0xBF01))
         throw new HpException(460,"Invalid clipboard format");
		String dstData="";
	   if(formatstr==Format)
		{
			Transferable content = clipboardstr.getContents(dstData);
			if (content != null) 
			{
				boolean bol=false;
				try{
					bol=content.isDataFlavorSupported(DataFlavor.stringFlavor);
				}catch(Exception e)
				{
					return "";
				}
				if(bol)
				{
					try 
					{
						  dstData = (String)content.getTransferData(DataFlavor.stringFlavor);
					} 
					catch (UnsupportedFlavorException e) { }
					catch (IOException e){}
				}
			}
			return dstData ;  
		}            	   
		else return dstData;
	}

	//================== BMP ===================

	public static void   SetData(Picture picture) throws HpException  
	{
	  	 SetData(picture,2);
	}
	public static void   SetData(Picture pict,int Format)throws HpException  
	{
      if(!(Format==2 || Format==3 || Format==8 || Format==9))
         throw new HpException(461,"Speccified format doesn't match the format of data ");   
		formatpic=Format;
		Picture picture=pict;
		PictureSelection contents = new PictureSelection(picture);
      clipboardpic.setContents(contents, defaultClipboardOwner);	 
	}
	public static Picture GetData()throws HpException
	{
 		return GetData(2);
 	} 
	public static Picture GetData(int Format)throws HpException
	{ 
      if(!(Format==2 || Format== 3 || Format==8 || Format==9))
         throw new HpException(460,"Invalid clipboard format");
		 Picture picture=null;
		 if(Format==formatpic)
		 {
			 Transferable contents = clipboardpic.getContents(picture);
			 if(contents != null && contents.isDataFlavorSupported(PictureSelection.PictureFlavor))
			 {
				 try 
				 {
						picture=(Picture) contents.getTransferData(PictureSelection.PictureFlavor);
				 }
				 catch(Exception e) 
				 {e.printStackTrace();}
			 }
          if(picture==null)  
          	return new Picture();
          else 
            return picture;
		 }
       if(picture==null)  
       	return new Picture();
       else 
         return picture;
    }
	
    static class ClipboardObserver implements ClipboardOwner 
	 {
		 public void lostOwnership(Clipboard clipboard, Transferable contents) {}
    }

  private static java.beans.BeanInfo bi = null;

  public java.beans.BeanInfo getBeanInfo()
  {
    if (bi == null)
	{
	  bi =(java.beans.BeanInfo) new HAB.object.ClipBoardBeanInfo();
	}
    return bi;
  }
private void writeObject(java.io.ObjectOutputStream s)
				      throws java.io.IOException 
    {
         s.defaultWriteObject();
    }

    private void readObject(java.io.ObjectInputStream s)
	      throws java.lang.ClassNotFoundException,
		     java.io.IOException 
    {
        s.defaultReadObject();
    }

}