SMSclient.rar_smsclient

import java.io.IOException; import java.util.Enumeration; import javax.microedition.io.Connector; import javax.microedition.io.file.FileConnection; import javax.microedition.io.file.FileSystemRegistry; import javax.microedition.lcdui.*; /** * * @author hadeslee */ public class FileBrowser extends List implements CommandListener { /** * Command fired on file selection. */ public static final Command SELECT_FILE_COMMAND = new Command("选择", Command.OK, 1); public static final Command BACK_COMMAND = new Command("返回", Command.BACK, 2); private String currDirName; private String currFile; private Image dirIcon; private Image fileIcon; /* special string denotes upper directory */ private static final String UP_DIRECTORY = ".."; /* special string that denotes upper directory accessible by this browser. * this virtual directory contains all roots. */ private static final String MEGA_ROOT = "/"; /* separator string as defined by FC specification */ private static final String SEP_STR = "/"; /* separator character as defined by FC specification */ private static final char SEP = '/'; private Display display; private String selectedURL; private String filter = null; private String title; Screen backScreen; /** * Creates a new instance of FileBrowser for given <code>Display</code> object. * @param display non null display object. */ public FileBrowser(Display dis,Screen back) { super("选择文件", IMPLICIT); currDirName = MEGA_ROOT; display = dis; backScreen = back; setSelectCommand(SELECT_FILE_COMMAND); setSelectCommand(BACK_COMMAND); setCommandListener(this); try { dirIcon = Image.createImage(this.getClass().getResourceAsStream("dir.png")); } catch (IOException e) { dirIcon = null; } try { fileIcon = Image.createImage(this.getClass().getResourceAsStream("file.png")); } catch (IOException e) { fileIcon = null; } } /** * 显示当前的文件夹 */ public void showDir() { new Thread(new Runnable() { public void run() { try { showCurrDir(); } catch (SecurityException e) { Alert alert = new Alert("错误", "您没有权限访问此文件或文件夹!", null, AlertType.ERROR); alert.setTimeout(2000); display.setCurrent(alert, FileBrowser.this); } catch (Exception e) { e.printStackTrace(); } } }).start(); } /** * Indicates that a command event has occurred on Displayable d. * @param c a <code>Command</code> object identifying the command. This is either * one of the applications have been added to <code>Displayable</code> with <code>addCommand(Command)</code> * or is the implicit <code>SELECT_COMMAND</code> of List. * @param d the <code>Displayable</code> on which this event has occurred */ public void commandAction(Command c, Displayable d) { if (c.equals(SELECT_FILE_COMMAND)) { List curr = (List) d; currFile = curr.getString(curr.getSelectedIndex()); new Thread(new Runnable() { public void run() { if (currFile.endsWith(SEP_STR) || currFile.equals(UP_DIRECTORY)) { openDir(currFile); } else { //switch To Next doDismiss(); } } }).start(); } else if (c.equals(BACK_COMMAND)) { display.setCurrent(backScreen); } } /** * Show file list in the current directory . */ private void showCurrDir() { if (title == null) { super.setTitle(currDirName); } Enumeration e = null; FileConnection currDir = null; deleteAll(); if (MEGA_ROOT.equals(currDirName)) { append(UP_DIRECTORY, dirIcon); e = FileSystemRegistry.listRoots(); } else { try { currDir = (FileConnection) Connector.open("file:///" + currDirName); e = currDir.list(); } catch (IOException ioe) { } append(UP_DIRECTORY, dirIcon); } if (e == null) { try { currDir.close(); } catch (IOException ioe) { ioe.printStackTrace(); } return; } while (e.hasMoreElements()) { String fileName = (String) e.nextElement(); if (fileName.charAt(fileName.length() - 1) == SEP) { // This is directory append(fileName, dirIcon); } else { // this is regular file if (filter == null || fileName.indexOf(filter) > -1) { append(fileName, fileIcon); } } } if (currDir != null) { try { currDir.close(); } catch (IOException ioe) { ioe.printStackTrace(); } } } private void openDir(String fileName) { /* In case of directory just change the current directory * and show it */ if (currDirName.equals(MEGA_ROOT)) { if (fileName.equals(UP_DIRECTORY)) { // can not go up from MEGA_ROOT return; } currDirName = fileName; } else if (fileName.equals(UP_DIRECTORY)) { // Go up one directory // TODO use setFileConnection when implemented int i = currDirName.lastIndexOf(SEP, currDirName.length() - 2); if (i != -1) { currDirName = currDirName.substring(0, i + 1); } else { currDirName = MEGA_ROOT; } } else { currDirName = currDirName + fileName; } showDir(); } /** * Returns selected file as a <code>FileConnection</code> object. * @return non null <code>FileConection</code> object */ public FileConnection getSelectedFile() throws IOException { FileConnection fileConnection = (FileConnection) Connector.open(selectedURL); return fileConnection; } /** * Returns selected <code>FileURL</code> object. * @return non null <code>FileURL</code> object */ public String getSelectedFileURL() { return selectedURL; } /** * Sets the file filter. * @param filter file filter String object */ public void setFilter(String filter) { this.filter = filter; } private void doDismiss() { selectedURL = "file:///" + currDirName + currFile; System.out.println(selectedURL); ((EditForm)backScreen).siPath.setText(selectedURL); display.setCurrent(backScreen); } }