fileshape.java

来自「mywork是rcp开发的很好的例子」· Java 代码 · 共 77 行

package net.sf.freenote.model;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;

import net.sf.util.TousleUtil;

import org.eclipse.ui.views.properties.IPropertyDescriptor;
import org.eclipse.ui.views.properties.TextPropertyDescriptor;

import sun.misc.BASE64Encoder;
/**
 * 文件类形体的父类
 * @author levin
 */
public abstract class FileShape extends Shape {
	public static final String FILEPATH_PROP = "FilePath";
	private String[] fileEmbed;	//0-name,1-base64 content

	public FileShape() {
		super();
		fileEmbed=new String[2];
	}

	public String getFilePath() {
		return fileEmbed[0]==null?"":fileEmbed[0];
	}

	public void setFilePath(String filePath) {
		//处理文件嵌入
		File f=new File(filePath);
		if(f.exists()){
			try {
				fileEmbed[0]=f.getName();
				ByteArrayOutputStream baos=new ByteArrayOutputStream();
				TousleUtil.copyIntput2Output(new FileInputStream(f), baos);
				fileEmbed[1]=new BASE64Encoder().encode(baos.toByteArray());
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
		firePropertyChange(FILEPATH_PROP, null, filePath);
	}

	@Override
	public IPropertyDescriptor[] getPropertyDescriptors() {
		IPropertyDescriptor[] propertyDescriptors = super.getPropertyDescriptors();
		IPropertyDescriptor[] ret=new IPropertyDescriptor[propertyDescriptors.length+1];
		System.arraycopy(propertyDescriptors, 0, ret, 1, propertyDescriptors.length);
		ret[0]=new TextPropertyDescriptor(FILEPATH_PROP, FILEPATH_PROP);
		return ret;
	}

	@Override
	public Object getPropertyValue(Object propertyId) {
		if(FILEPATH_PROP.equals(propertyId))
			return getFilePath();
		return super.getPropertyValue(propertyId);
	}

	@Override
	public void setPropertyValue(Object propertyId, Object value) {
		if(FILEPATH_PROP.equals(propertyId))
			setFilePath(String.valueOf(value));
		else
			super.setPropertyValue(propertyId, value);
	}

	public String[] getFileEmbed() {
		return fileEmbed;
	}

	public void setFileEmbed(String[] fileEmbed) {
		this.fileEmbed = fileEmbed;
	}
}