PAL.C.T MINI SHELL
import java.awt.*;
import java.io.*;
import java.applet.*;
import java.net.*;
import java.util.*;
import netscape.javascript.JSObject;
public class TreeChooser extends Applet
implements CbButtonCallback, HierarchyCallback
{
CbButton add_b, remove_b, close_b;
Hierarchy tree;
BaculaNode root;
String volume;
String session;
String job;
Vector added = new Vector();
public void init()
{
// Create the root
String rpath = getParameter("root");
root = new BaculaNode(this, rpath, true, null);
volume = getParameter("volume");
session = getParameter("session");
job = getParameter("job");
// Build the UI
setLayout(new BorderLayout());
BorderPanel top = new BorderPanel(2);
top.setLayout(new FlowLayout(FlowLayout.LEFT));
top.add(add_b = new CbButton("Add", this));
top.add(remove_b = new CbButton("Remove", this));
top.add(close_b = new CbButton("Close", this));
add("North", top);
add("Center", tree = new Hierarchy(root, this));
}
Image get_image(String img)
{
return getImage(getDocumentBase(), "images/"+img);
}
String[] get_text(String url)
{
Cursor orig = getCursor();
try {
Cursor busy = Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR);
setCursor(busy);
long now = System.currentTimeMillis();
if (url.indexOf('?') > 0) url += "&rand="+now;
else url += "?rand="+now;
URL u = new URL(getDocumentBase(), url);
URLConnection uc = u.openConnection();
set_cookie(uc);
String charset = get_charset(uc.getContentType());
BufferedReader is = new BufferedReader(
(charset == null) ?
new InputStreamReader(uc.getInputStream()) :
new InputStreamReader(uc.getInputStream(), charset));
Vector lv = new Vector();
while(true) {
String l = is.readLine();
if (l == null) { break; }
lv.addElement(l);
}
is.close();
String rv[] = new String[lv.size()];
lv.copyInto(rv);
return rv;
}
catch(Exception e) {
e.printStackTrace();
//return null;
String err[] = { e.getMessage() };
return err;
}
finally {
setCursor(orig);
}
}
void set_cookie(URLConnection conn)
{
if (session != null)
conn.setRequestProperty("Cookie", session);
}
// Gets charset parameter from Content-Type: header
String get_charset(String ct)
{
if (ct == null)
return null;
StringTokenizer st = new StringTokenizer(ct, ";");
while (st.hasMoreTokens()) {
String l = st.nextToken().trim().toLowerCase();
if (l.startsWith("charset=")) {
// get the value of charset= param.
return l.substring(8);
}
}
return null;
}
public void openNode(Hierarchy h, HierarchyNode n)
{
// Get the files under this directory, and expand the tree
BaculaNode bn = (BaculaNode)n;
bn.fill();
}
public void closeNode(Hierarchy h, HierarchyNode n)
{
// No need to do anything
}
public void clickNode(Hierarchy h, HierarchyNode n)
{
// Also no need to do anything
}
public void doubleNode(Hierarchy h, HierarchyNode n)
{
// add or remove a file
BaculaNode sel = (BaculaNode)n;
if (sel.added) remove_node(sel);
else add_node(sel);
}
public void click(CbButton b)
{
BaculaNode sel = (BaculaNode)tree.selected();
if (b == close_b) {
// Close the window, and update the text box
try {
JSObject win = JSObject.getWindow(this);
String params1[] = { "" };
win.call("clear_files", params1);
for(int i=0; i<added.size(); i++) {
BaculaNode n = (BaculaNode)added.elementAt(i);
String params2[] = { n.path };
if (n.isdir && !n.path.equals("/"))
params2[0] = n.path+"/";
win.call("add_file", params2);
}
String params3[] = { "" };
win.call("finished", params3);
}
catch(Exception e) {
e.printStackTrace();
new ErrorWindow("Failed to set files : "+
e.getMessage());
}
}
else if (b == add_b) {
// Flag the selected file as added
if (sel != null) {
add_node(sel);
}
}
else if (b == remove_b) {
// Un-flag the selected file
if (sel != null) {
remove_node(sel);
}
}
}
void add_node(BaculaNode n)
{
if (!n.added) {
n.added = true;
n.set_all_icons();
tree.redraw();
added.addElement(n);
}
}
void remove_node(BaculaNode n)
{
if (n.added) {
n.added = false;
n.set_all_icons();
tree.redraw();
added.removeElement(n);
}
}
static String urlize(String s)
{
StringBuffer rv = new StringBuffer();
for(int i=0; i<s.length(); i++) {
char c = s.charAt(i);
if (c < 16)
rv.append("%0"+Integer.toString(c, 16));
else if (!Character.isLetterOrDigit(c) && c != '/' &&
c != '.' && c != '_' && c != '-')
rv.append("%"+Integer.toString(c, 16));
else
rv.append(c);
}
return rv.toString();
}
}
class BaculaNode extends HierarchyNode
{
TreeChooser parent;
String path;
boolean isdir;
boolean known = false;
boolean added = false;
BaculaNode dir;
BaculaNode(TreeChooser parent, String path, boolean isdir, BaculaNode dir)
{
this.parent = parent;
this.path = path;
this.isdir = isdir;
this.dir = dir;
open = false;
set_icon();
ch = isdir ? new Vector() : null;
if (path.equals("/"))
text = "/";
else {
String ns = path.endsWith("/") ?
path.substring(0, path.length() - 1) : path;
int slash = ns.lastIndexOf("/");
text = path.substring(slash+1);
}
}
void set_icon()
{
String imname = isdir ? "dir.gif" : "rfile.gif";
if (selected()) imname = "s"+imname;
im = parent.get_image(imname);
}
void set_all_icons()
{
set_icon();
if (ch != null) {
for(int i=0; i<ch.size(); i++) {
BaculaNode c = (BaculaNode)ch.elementAt(i);
c.set_all_icons();
}
}
}
void fill()
{
if (!known && isdir) {
ch.removeAllElements();
String l[] = parent.get_text("list.cgi?dir="+
parent.urlize(path)+
"&volume="+
parent.urlize(parent.volume)+
"&job="+
parent.urlize(parent.job));
if (l[0].length() > 0) {
new ErrorWindow("Failed to get files under "+path+
" : "+l[0]);
return;
}
for(int i=1; i<l.length; i++) {
if (l[i].endsWith("/")) {
ch.addElement(
new BaculaNode(
parent, l[i].substring(0, l[i].length()-1),
true, this));
}
else {
ch.addElement(
new BaculaNode(
parent, l[i], false, this));
}
}
parent.tree.redraw();
known = true;
}
}
boolean selected()
{
BaculaNode n = this;
while(n != null) {
if (n.added) return true;
n = n.dir;
}
return false;
}
}
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