bookitem.java

手机电子书阅读软件基本框架

/********************************************************************
 * 
 * 版权说明，此程序仅供学习参考。不能用于商业
 * 
 ********************************************************************/
package org.pook.main;

import java.io.IOException;
import java.util.Vector;

import javax.microedition.lcdui.Image;

import org.pook.Pook;
import org.pook.Resources;
import org.pook.file.BookFile;
import org.pook.file.BookFileManager;
import org.pook.log.Log;
import org.pook.model.File;
import org.pook.ui.Command;
import org.pook.ui.IconMenu;
import org.pook.ui.List;
import org.pook.ui.Menu;
import org.pook.ui.event.CommandListener;
import org.pook.ui.form.FormPanel;
import org.pook.ui.form.MenuPanel;

/**
 * <b>类名：MainMenu.java</b> </br> 编写日期: 2006-9-15 <br/> 程序功能描述： <br/> Demo:
 * <br/> Bug: <br/>
 * 
 * 程序变更日期 ：<br/> 变更作者 ：<br/> 变更说明 ：<br/>
 * 
 * @author wuhua </br> <a href="mailto:[e-mail]">[e-mail]</a>
 */
public class BookItem extends FormPanel implements CommandListener {

    private Log log = Log.getLog("BookItem");
    
	private Command ok = new Command("进入", Command.LEFT, Command.FIRST_PRIORITY);

	private Command back = new Command("返回", Command.RIGHT,
			Command.GENERAL_PRIORITY);

	private List list;

	/**
	 * 用户处理返回索引
	 */
	private int backIndex;
	
	private File file;
	
	private StringBuffer sb = new StringBuffer();;

	public BookItem() {
		super(Resources.MY_BOOK);
		initContenxt();
		this.addCommand(ok);
		this.addCommand(back);

		this.setSoftButtonListener(this);

		this.setSoftButtonStyle(0xFFFFFF, 0x000000);

	}

	private void initContenxt() {
		list = new List(Resources.ARROW);

		list.setStyle(0x80D4F2, 0xFFFFFF);

		this.append(list);

	}

	public void addBookList(Vector lists) {
		this.list.append(lists);
	}

	public void commandAction(Command cmd) {
		if (cmd == ok) {
			openNextFileList();
		} else {
			openBack();

		}

	}

	/**
	 * 返回
	 * 
	 */
	private void openBack() {
		if (backIndex == 0) {
			Pook.openForm(Pook.MAINMENU);
		} else {
			list.setSelectIndex(0);
			backIndex--;
			this.addBookList((Vector) Resources.FILE_LIST.elementAt(backIndex));
			Resources.FILE_LIST.removeElement((Vector) Resources.FILE_LIST
					.elementAt(backIndex+1));
			skipPath(); 
			
		}

		this.repaint();
	}

	private void skipPath() {
		String s = sb.reverse().toString();
		
		
		for(int i =0; i<2;i++){
			int index = s.indexOf((int)'/');
			log.debug(index);
			 
			s = s.substring(index+1, s.length() );
			
		
		}
		sb = new StringBuffer();
		sb.append(s);
		sb.reverse();
		sb.append("/");
		log.debug(sb);
	}
	
	private void skipPathFileName() {
		String s = sb.reverse().toString();
		
		
	 
			int index = s.indexOf((int)'/');
			log.debug(index);
			 
			s = s.substring(index+1, s.length() );
			
		sb = new StringBuffer();
		sb.append(s);
		sb.reverse();
		sb.append("/");
		log.debug(sb);
	}

	/**
	 * 打开文件列表，直到打开非目录为止
	 * 
	 */
	private void openNextFileList() {

		
		BookFile bf = null;
		
		try {
			if(backIndex == 0){
				bf = BookFileManager.openBookFile(getPath());
				file = bf.openFile();
				 
			}else{
				bf = BookFileManager.openBookFile(getPath());
				
				if(!bf.exists()){
					Pook.openMessageDialog("错误", "文件不存在，请查证！" +
							"目录错误：" + getPath() , this);
					skipPathFileName(); 
					return;
				}
					
				file = bf.openFile();
				
			}
			
			
			
		} catch (Exception e1) {
			Pook.openMessageDialog("错误", "文件不存在，请查证！" +
					"目录错误：" + getPath(), this);
		}

		
		if (bf.isFile()) {

		} else {
			Vector listNames = null;
			try {
				listNames = bf.listName();
			} catch (IOException e) {
				Pook.openMessageDialog("错误", "文件不存在，请查证！", this);
			}

			this.addBookList(listNames);

			Resources.FILE_LIST.addElement(listNames);

			list.setSelectIndex(0);
			backIndex++;
		}
		
		bf.close();

		this.repaint();
	}
	
	private String getPath(){
		String name = list.getSelectString();
	 log.debug(name);
		if(backIndex == 0){
			sb = new StringBuffer();
			sb.append("file:///" + name);
			 
			 
		}else{
			sb.append(name);
		}
		return sb.toString();
	}

}