/*
* This file is modified by Ivan Maidanski <ivmai@ivmaisoft.com>
* Project name: JCGO-SUNAWT (http://www.ivmaisoft.com/jcgo/)
*/
/*
* @(#)Win32ShellFolder.java 1.30 03/01/23
*
* Copyright 2003 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package sun.awt.shell;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.security.AccessController;
import java.util.*;
import sun.security.action.GetPropertyAction;
/**
* Win32 Shell Folders
* <P>
* <BR>
* There are two fundamental types of shell folders : file system folders
* and non-file system folders. File system folders are relatively easy
* to deal with. Non-file system folders are items such as My Computer,
* Network Neighborhood, and the desktop. Some of these non-file system
* folders have special values and properties.
* <P>
* <BR>
* Win32 keeps two basic data structures for shell folders. The first
* of these is called an ITEMIDLIST. Usually a pointer, called an
* LPITEMIDLIST, or more frequently just "PIDL". This structure holds
* a series of identifiers and can be either relative to the desktop
* (an absolute PIDL), or relative to the shell folder that contains them.
* Some Win32 functions can take absolute or relative PIDL values, and
* others can only accept relative values.
* <BR>
* The second data structure is an IShellFolder COM interface. Using
* this interface, one can enumerate the relative PIDLs in a shell
* folder, get attributes, etc.
* <BR>
* Unfortunately, the two concepts run against each other in many instances.
* Most notably, it is impossible, except in Windows 2000, to get a parent
* IShellFolder interface from an absolute PIDL (the SHBindToParent function,
* the important glue, is not available in most versions of the DLL). Even
* if this glue were present, there is still no means of getting the parent's
* PIDL from its IShellFolder interface. Therefore, navigation through the
* shell folder tree is tricky.
* <P>
* <BR>
* We have provided only a few ways to get a ShellFolder:
* <OL>
* <LI> One can call ShellFolder.getRoots() </LI>
* <LI> One can call ShellFolder.getShellFolder(File f) </LI>
* <LI> From an existing ShellFolder, one can call getParentFile() </LI>
* <LI> From an existing ShellFolder, one can call getChildren() </LI>
* </OL>
* Our navigation strategy is different for file system folders than non-file
* system folders. File system folders are initialized with their
* absolute PIDL, and non-file system folders are initialized with their
* IShellFolder interface and relative PIDL. Non-file system folders also
* carry a reference to their parent shell folder.
*
* @author Michael Martak
* @author Leif Samuelsson
* @since 1.4
*/
final class Win32ShellFolder extends ShellFolder {
private static native void initIDs();
static {
initIDs();
}
// Win32 Shell Folder Constants
public static final int DESKTOP = 0x0000;
public static final int INTERNET = 0x0001;
public static final int PROGRAMS = 0x0002;
public static final int CONTROLS = 0x0003;
public static final int PRINTERS = 0x0004;
public static final int PERSONAL = 0x0005;
public static final int FAVORITES = 0x0006;
public static final int STARTUP = 0x0007;
public static final int RECENT = 0x0008;
public static final int SENDTO = 0x0009;
public static final int BITBUCKET = 0x000a;
public static final int STARTMENU = 0x000b;
public static final int DESKTOPDIRECTORY = 0x0010;
public static final int DRIVES = 0x0011;
public static final int NETWORK = 0x0012;
public static final int NETHOOD = 0x0013;
public static final int FONTS = 0x0014;
public static final int TEMPLATES = 0x0015;
public static final int COMMON_STARTMENU = 0x0016;
public static final int COMMON_PROGRAMS = 0X0017;
public static final int COMMON_STARTUP = 0x0018;
public static final int COMMON_DESKTOPDIRECTORY = 0x0019;
public static final int APPDATA = 0x001a;
public static final int PRINTHOOD = 0x001b;
public static final int ALTSTARTUP = 0x001d;
public static final int COMMON_ALTSTARTUP = 0x001e;
public static final int COMMON_FAVORITES = 0x001f;
public static final int INTERNET_CACHE = 0x0020;
public static final int COOKIES = 0x0021;
public static final int HISTORY = 0x0022;
// Win32 shell folder attributes
public static final int ATTRIB_CANCOPY = 0x00000001;
public static final int ATTRIB_CANMOVE = 0x00000002;
public static final int ATTRIB_CANLINK = 0x00000004;
public static final int ATTRIB_CANRENAME = 0x00000010;
public static final int ATTRIB_CANDELETE = 0x00000020;
public static final int ATTRIB_HASPROPSHEET = 0x00000040;
public static final int ATTRIB_DROPTARGET = 0x00000100;
public static final int ATTRIB_LINK = 0x00010000;
public static final int ATTRIB_SHARE = 0x00020000;
public static final int ATTRIB_READONLY = 0x00040000;
public static final int ATTRIB_GHOSTED = 0x00080000;
public static final int ATTRIB_HIDDEN = 0x00080000;
public static final int ATTRIB_FILESYSANCESTOR = 0x10000000;
public static final int ATTRIB_FOLDER = 0x20000000;
public static final int ATTRIB_FILESYSTEM = 0x40000000;
public static final int ATTRIB_HASSUBFOLDER = 0x80000000;
public static final int ATTRIB_VALIDATE = 0x01000000;
public static final int ATTRIB_REMOVABLE = 0x02000000;
public static final int ATTRIB_COMPRESSED = 0x04000000;
public static final int ATTRIB_BROWSABLE = 0x08000000;
public static final int ATTRIB_NONENUMERATED = 0x00100000;
public static final int ATTRIB_NEWCONTENT = 0x00200000;
/*
* We keep track of non-file system shell folders through their
* IShellFolder interface.
*/
private long pIShellFolder = 0;
/*
* Relative PIDL is useful for a non-file system folder for caching,
* but is not entirely necessary. A relative PIDL can be derived
* from a parent IShellFolder's BindToObject method.
*/
private long relativePIDL = 0;
/*
* We keep track of file system shell folders through their
* absolute PIDL.
*/
private long pIDL = 0;
/*
* The following are for caching various shell folder properties.
*/
private long attributes = -1L;
private String folderType = null;
private String displayName = null;
private Image smallIcon = null;
private Image largeIcon = null;
/**
* Create a non-file system special shell folder, such as the
* desktop or Network Neighborhood.
*/
Win32ShellFolder(ShellFolder parent, int shellFolderType) throws IOException {
// Desktop is parent of DRIVES and NETWORK, not necessarily
// other special shell folders.
super(parent,
(getFileSystemPath(shellFolderType) == null)
? ("ShellFolder: 0x"+Integer.toHexString(shellFolderType)) : getFileSystemPath(shellFolderType));
if (shellFolderType == DESKTOP) {
initDesktop();
} else {
initSpecial(getDesktop().getIShellFolder(), shellFolderType);
}
}
/**
* Create a file system shell folder from a file path.
*/
public Win32ShellFolder(ShellFolder parent, String absolutePath) throws FileNotFoundException {
super(parent, absolutePath);
try {
boolean initAttributes = true;
if (absolutePath.length() == 3 && absolutePath.endsWith(":\\")) {
// It is generally better to initialize attributes here for
// speed, but we also need to avoid touching removable drives
// unnecessarily.
initAttributes = false;
}
pIDL = initFile(getDesktopIShellFolder(), absolutePath, initAttributes);
} catch (IOException e) {
throw new FileNotFoundException(absolutePath + " (" + e.getMessage() + ")");
}
}
/**
* Create a file system shell folder from a file.
*/
public Win32ShellFolder(ShellFolder parent, File file) throws FileNotFoundException {
this(parent, file.getAbsolutePath());
}
/**
* Create a system shell folder
*/
Win32ShellFolder(Win32ShellFolder parent, long pIShellFolder, long relativePIDL, String path) {
super(parent, (path != null) ? path : "ShellFolder: ");
this.pIShellFolder = pIShellFolder;
this.relativePIDL = relativePIDL;
}
// Initializes the desktop shell folder
private native void initDesktop();
// Initializes a special, non-file system shell folder
// from one of the above constants
private native void initSpecial(long desktopIShellFolder,
int shellFolderType);
// Initializes a file system shell folder from an absolute
// path. Returns the absoulte PIDL of the file. This value
// must be released using releasePIDL().
private native long initFile(long desktopIShellFolder, String absolutePath,
boolean initAttributes) throws IOException;
/**
* This method is implemented to make sure that no instances
* of <code>ShellFolder</code> are ever serialized. If <code>isFileSystem()</code> returns
* <code>true</code>, then the object is representable with an instance of
* <code>java.io.File</code> instead. If not, then the object depends
* on native PIDL state and should not be serialized.
*
* @returns a <code>java.io.File</code> replacement object. If the folder
* is a not a normal directory, then returns the first non-removable
* drive (normally "C:\").
*/
protected Object writeReplace() throws java.io.ObjectStreamException {
if (isFileSystem()) {
return new File(getPath());
} else {
Win32ShellFolder drives = Win32ShellFolderManager.getDrives();
if (drives != null) {
File[] driveRoots = drives.listFiles();
if (driveRoots != null) {
for (int i = 0; i < driveRoots.length; i++) {
if (driveRoots[i] instanceof Win32ShellFolder) {
Win32ShellFolder sf = (Win32ShellFolder)driveRoots[i];
if (sf.isFileSystem() && !sf.hasAttribute(ATTRIB_REMOVABLE)) {
return new File(sf.getPath());
}
}
}
}
}
// Ouch, we have no hard drives. Return something "valid" anyway.
return new File("C:\\");
}
}
/**
* Finalizer to clean up any COM objects or PIDLs used by this object.
*/
protected void finalize() throws Throwable {
if (pIDL != 0 && pIShellFolder == 0) {
releasePIDL(pIDL);
pIDL = 0;
if (relativePIDL != 0) {
releasePIDL(relativePIDL);
relativePIDL = 0;
}
} else {
// Can't release pIShellFolder and relativePIDL because
// they are shared between instances, and reference counting
// would not be cost effective.
pIShellFolder = 0;
}
}
// Release a PIDL object
private native void releasePIDL(long pIDL);
/**
* Accessor for IShellFolder (non-file system shell folders only)
*/
public long getIShellFolder() {
return pIShellFolder;
}
/**
* Get the parent ShellFolder's IShellFolder interface (non-file system
* shell folders only)
*/
public long getParentIShellFolder() {
Win32ShellFolder parent = (Win32ShellFolder)getParentFile();
// Parent should only be null if this is the desktop IShellFolder
if (parent == null) {
if (equals(getDesktop())) {
return getIShellFolder();
}
return 0;
}
return parent.getIShellFolder();
}
// Derive a relative PIDL from a parent IShellFolder's BindToObject method
// and comparing interface pointers. Returns the relative PIDL.
private long getRelativePIDL(long parentIShellFolder,
long pIShellFolder) {
if (parentIShellFolder == 0 || pIShellFolder == 0) {
return 0;
}
long enumObjects = getEnumObjects(parentIShellFolder, true);
if (enumObjects == 0) {
return 0;
}
try {
long childPIDL = 0;
do {
childPIDL = getNextChild(enumObjects);
if (childPIDL != 0) {
long childIShellFolder =
bindToObject(parentIShellFolder, childPIDL);
if (childIShellFolder == pIShellFolder) {
return childPIDL;
}
releasePIDL(childPIDL);
}
} while (childPIDL != 0);
} finally {
releaseEnumObjects(enumObjects);
}
return 0;
}
/**
* Accessor for relative PIDL (non-file system shell folders only)
*/
public long getRelativePIDL() {
if (relativePIDL == 0) {
relativePIDL = getRelativePIDL(
getParentIShellFolder(), getIShellFolder());
}
return relativePIDL;
}
/**
* Accessor for absolute PIDL (file system shell folders only)
*/
public long getPIDL() {
return pIDL;
}
/**
* Helper function to return the desktop
*/
public Win32ShellFolder getDesktop() {
return Win32ShellFolderManager.getDesktop();
}
/**
* Helper function to return the desktop IShellFolder interface
*/
public long getDesktopIShellFolder() {
return getDesktop().getIShellFolder();
}
/**
* Check to see if two ShellFolder objects are the same
*/
public boolean equals(Object o) {
if (o == null || !(o instanceof Win32ShellFolder)) {
if (getPIDL() != 0) {
return super.equals(o);
} else {
return false;
}
}
Win32ShellFolder rhs = (Win32ShellFolder)o;
ShellFolder parent = (ShellFolder)getParentFile();
if (parent != null && !parent.equals(rhs.getParentFile())) {
return false;
}
if (isFileSystem()) {
return getAbsolutePath().equals(rhs.getAbsolutePath());
}
return (getIShellFolder() == rhs.getIShellFolder());
}
/**
* @return Whether this is a file system shell folder
*/
public boolean isFileSystem() {
return (getPIDL() != 0 || !getPath().startsWith("ShellFolder: "));
}
// Initialize and cache attributes for a file system shell folder
private native void initAttributes(long pIDL);
// Return whether a non-file system shell folder has the supplied
// attribute
private native boolean hasAttribute(long parentIShellFolder,
long relativePIDL, int attribute);
private native boolean hasAttribute(boolean dummy);
/**
* Return whether the given attribute flag is set for this object
*/
public boolean hasAttribute(int attribute) {
boolean result = false;
if (getPIDL() != 0) {
if (attributes == -1L) {
initAttributes(getPIDL());
}
result = (attributes & attribute) != 0;
}
if (pIShellFolder != 0) {
result = result || hasAttribute(getParentIShellFolder(), getRelativePIDL(),
attribute);
}
return result;
}
// Return whether this non-file system shell folder behaves
// like a standard file system object. If this returns true,
// this shell folder represents a valid file system object.
private boolean behavesLikeFileSystem(long parentIShellFolder, long relativePIDL) {
return hasAttribute(parentIShellFolder, relativePIDL, ATTRIB_FILESYSTEM);
}
// Return the path to the underlying file system object
static native String getFileSystemPath(long parentIShellFolder, long relativePIDL);
static native String getFileSystemPath(int csidl) throws IOException;
// Return whether the path is a network root.
// Path is assumed to be non-null
private static boolean isNetworkRoot(String path) {
return (path.equals("\\\\") || path.equals("\\") || path.equals("//") || path.equals("/"));
}
/**
* @return The parent shell folder of this shell folder, null if
* there is no parent
*/
public File getParentFile() {
if (parent == null) {
if (getPIDL() != 0) {
String parentName = getParent();
// Check if we are a root
if (parentName == null) { // We are a root
String filename = getAbsolutePath();
// Check if we are a network path
if (filename.startsWith("\\")) {
parent = Win32ShellFolderManager.getNetwork();
} else {
parent = Win32ShellFolderManager.getDrives();
}
} else if (isNetworkRoot(parentName)) {
parent = Win32ShellFolderManager.getNetwork();
} else { // We are not a root
try {
parent = new Win32ShellFolder(null, super.getParentFile());
} catch (FileNotFoundException ignore) { }
}
}
}
return parent;
}
public boolean isDirectory() {
return (hasAttribute(ATTRIB_HASSUBFOLDER) || (isFileSystem() && super.isDirectory()));
}
/*
* Functions for enumerating an IShellFolder's children
*/
// Returns an IEnumIDList interface for an IShellFolder. The value
// returned must be released using releaseEnumObjects().
private long getEnumObjects(long pIShellFolder, boolean includeHiddenFiles) {
boolean isDesktop = (pIShellFolder == getDesktopIShellFolder());
return getEnumObjects(pIShellFolder, isDesktop, includeHiddenFiles);
}
// Returns an IEnumIDList interface for an IShellFolder. The value
// returned must be released using releaseEnumObjects().
private native long getEnumObjects(long pIShellFolder, boolean isDesktop,
boolean includeHiddenFiles);
// Returns the next sequential child as a relative PIDL
// from an IEnumIDList interface. The value returned must
// be released using releasePIDL().
private native long getNextChild(long pEnumObjects);
// Releases the IEnumIDList interface
private native void releaseEnumObjects(long pEnumObjects);
// Returns the IShellFolder of a child from a parent IShellFolder
// and a relative PIDL. The value returned must be released
// using releaseIShellFolder().
private native long bindToObject(long parentIShellFolder, long pIDL);
/**
* @return An array of shell folders that are children of this shell folder
* object, null if this shell folder is empty.
*/
public File[] listFiles(boolean includeHiddenFiles) {
Win32ShellFolder desktop = Win32ShellFolderManager.getDesktop();
Win32ShellFolder personal = Win32ShellFolderManager.getPersonal();
File[] children = null;
if (getPIDL() != 0) {
File[] tmpChildren = super.listFiles(includeHiddenFiles);
if (tmpChildren != null) {
children = new File[tmpChildren.length];
int j = 0;
for (int i = 0; i < tmpChildren.length; i++) {
if (Thread.currentThread().isInterrupted()) {
break;
}
try {
File child = new Win32ShellFolder(this, tmpChildren[i]);
children[j++] = child;
} catch (FileNotFoundException ignore) { }
}
if (j < tmpChildren.length) {
tmpChildren = new File[j];
System.arraycopy(children, 0, tmpChildren, 0, j);
children = tmpChildren;
}
}
} else {
ArrayList list = new ArrayList();
long pIShellFolder = getIShellFolder();
if (pIShellFolder != 0) {
long pEnumObjects = getEnumObjects(pIShellFolder, includeHiddenFiles);
if (pEnumObjects != 0) {
long childPIDL = 0;
do {
childPIDL = getNextChild(pEnumObjects);
if (childPIDL != 0) {
Win32ShellFolder childFolder = null;
if (hasAttribute(pIShellFolder, childPIDL, ATTRIB_FILESYSTEM)) {
String path = getFileSystemPath(pIShellFolder, childPIDL);
if (path == null || !new File(path).isAbsolute()) {
// Some folders like "Infrared Recipient" are reported
// as being in the filesystem but don't have a real path.
continue;
}
if (this == desktop
&& personal != null
&& path.equalsIgnoreCase(personal.getAbsolutePath())) {
childFolder = personal;
} else {
try {
childFolder = new Win32ShellFolder(this, path);
} catch (FileNotFoundException e) {
continue;
}
}
} else if (hasAttribute(pIShellFolder, childPIDL, ATTRIB_FILESYSANCESTOR)) {
long childIShellFolder = bindToObject(pIShellFolder, childPIDL);
childFolder = new Win32ShellFolder(this, childIShellFolder, childPIDL, null);
} else {
//System.out.println("Losing a non-file");
}
if (childFolder != null) {
list.add(childFolder);
}
} else {
//System.out.println("Losing a NULL childPIDL");
}
} while (childPIDL != 0);
}
releaseEnumObjects(pEnumObjects);
children = (ShellFolder[])list.toArray(new ShellFolder[list.size()]);;
}
}
return children;
}
/**
* Look for (possibly special) child folder by it's path
*
* @return The child shellfolder, or null if not found.
*/
Win32ShellFolder getChildByPath(String filePath) {
long pIShellFolder = getIShellFolder();
long pEnumObjects = getEnumObjects(pIShellFolder, true);
Win32ShellFolder child = null;
long childPIDL = 0;
while ((childPIDL = getNextChild(pEnumObjects)) != 0) {
if (hasAttribute(pIShellFolder, childPIDL, ATTRIB_FILESYSTEM)) {
String path = getFileSystemPath(pIShellFolder, childPIDL);
if (path != null && path.equalsIgnoreCase(filePath)) {
long childIShellFolder = bindToObject(pIShellFolder, childPIDL);
child = new Win32ShellFolder(this, childIShellFolder, childPIDL, path);
break;
}
}
}
releaseEnumObjects(pEnumObjects);
return child;
}
/**
* @return Whether this shell folder is a link
*/
public boolean isLink() {
return hasAttribute(ATTRIB_LINK);
}
/**
* @return Whether this shell folder is marked as hidden
*/
public boolean isHidden() {
return hasAttribute(ATTRIB_HIDDEN);
}
// Return the link location of a shell folder
private native String getLinkLocation(long parentIShellFolder,
long relativePIDL);
/**
* @return The shell folder linked to by this shell folder, or null
* if this shell folder is not a link
*/
public ShellFolder getLinkLocation() throws FileNotFoundException {
if (!isLink()) {
return null;
}
String linkLocation = null;
if (getPIDL() != 0) {
linkLocation = getLinkLocation(getDesktopIShellFolder(), getPIDL());
} else {
linkLocation = getLinkLocation(getParentIShellFolder(), getRelativePIDL());
}
if (linkLocation == null) {
return null;
}
return new Win32ShellFolder(null, linkLocation);
}
// Return the display name of a non-file system shell folder
private native String getDisplayName(long parentIShellFolder,
long relativePIDL);
private native String getDisplayName(boolean dummy);
/**
* @return The name used to display this shell folder
*/
public String getDisplayName() {
if (displayName == null && getPIDL() == 0) {
displayName = getDisplayName(getParentIShellFolder(), getRelativePIDL());
}
return displayName;
}
// Return the folder type of a shell folder
private native String getFolderType(long pIDL);
/**
* @return The type of shell folder as a string
*/
public String getFolderType() {
if (folderType == null && getPIDL() == 0) {
folderType = getFolderType(getRelativePIDL());
}
return folderType;
}
// Return the executable type of a file system shell folder
private native String getExecutableType(byte[] path_bytes);
/**
* @return The executable type as a string
*/
public String getExecutableType() {
if (!isFileSystem()) {
return null;
}
return getExecutableType(getAbsolutePath().getBytes());
}
// Return the icon of a file system shell folder
private native long getIcon(long pIDL, boolean getLargeIcon);
// Return the icon of a non-file system shell folder
private native long getIcon(long parentIShellFolder,
long relativePIDL, boolean getLargeIcon);
// Return the bits from an HICON. This has a side effect of setting
// the imageHash variable for efficient caching / comparing.
private native int[] getIconBits(long hIcon, int iconSize);
// Dispose the HICON
private native void disposeIcon(long hIcon);
public static native int[] getFileChooserBitmapBits();
private int[] getIconBits(boolean getLargeIcon) {
// Get the HICON
long hIcon = 0;
if (getPIDL() != 0) {
hIcon = getIcon(getPIDL(), getLargeIcon);
} else {
hIcon = getIcon(getParentIShellFolder(),
getRelativePIDL(), getLargeIcon);
}
// From an HICON, call GetIconInfo to get the underlying HBITMAPs,
// then call GetDIBits.
if (hIcon == 0) {
return null;
}
// Get the bits. This has the side effect of setting the imageHash
// value for this object.
int[] bits = getIconBits(hIcon, getLargeIcon ? 32 : 16);
// Dispose the HICON
disposeIcon(hIcon);
return bits;
}
static int[] fileChooserBitmapBits = null;
static Image[] fileChooserIcons = new Image[47];
static Image getFileChooserIcon(int i) {
if (fileChooserIcons[i] != null) {
return fileChooserIcons[i];
} else {
if (fileChooserBitmapBits == null) {
fileChooserBitmapBits = getFileChooserBitmapBits();
}
if (fileChooserBitmapBits != null) {
int nImages = fileChooserBitmapBits.length / (16*16);
int[] bitmapBits = new int[16 * 16];
for (int y = 0; y < 16; y++) {
for (int x = 0; x < 16; x++) {
bitmapBits[y * 16 + x] = fileChooserBitmapBits[y * (nImages * 16) + (i * 16) + x];
}
}
BufferedImage img = new BufferedImage(16, 16, BufferedImage.TYPE_INT_ARGB);
img.setRGB(0, 0, 16, 16, bitmapBits, 0, 16);
fileChooserIcons[i] = img;
}
}
return fileChooserIcons[i];
}
/**
* @return The icon image used to display this shell folder
*/
public Image getIcon(boolean getLargeIcon) {
Image icon = getLargeIcon ? largeIcon : smallIcon;
if (icon == null) {
int size = getLargeIcon ? 32 : 16;
int[] iconBits = getIconBits(getLargeIcon);
if (iconBits == null) {
return super.getIcon(getLargeIcon);
}
BufferedImage img = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB);
img.setRGB(0, 0, size, size, iconBits, 0, size);
if (getLargeIcon) {
icon = largeIcon = img;
} else {
icon = smallIcon = img;
}
}
return icon;
}
/**
* Returns the canonical form of this abstract pathname. Equivalent to
* <code>new Win32ShellFolder(getParentFile(), this.{@link java.io.File#getCanonicalPath}())</code>.
*
* @see java.io.File#getCanonicalFile
*/
public File getCanonicalFile() throws IOException {
if (getPIDL() != 0) {
return new Win32ShellFolder(parent, super.getCanonicalPath());
} else {
return this;
}
}
private List topFolderList = null;
/**
* Compares this object with the specified object for order.
*
* @see sun.awt.shell.ShellFolder#compareTo(File)
*/
public int compareTo(File file2) {
if (file2 == null || !(file2 instanceof Win32ShellFolder)
|| ((file2 instanceof Win32ShellFolder) && ((Win32ShellFolder)file2).getPIDL() != 0)) {
if (getPIDL() != 0) {
return super.compareTo(file2);
} else {
return -1;
}
} else {
if (getPIDL() != 0) {
return 1;
} else {
if (topFolderList == null) {
topFolderList = new ArrayList();
topFolderList.add(Win32ShellFolderManager.getPersonal());
topFolderList.add(Win32ShellFolderManager.getDesktop());
topFolderList.add(Win32ShellFolderManager.getDrives());
topFolderList.add(Win32ShellFolderManager.getNetwork());
}
int i1 = topFolderList.indexOf(this);
int i2 = topFolderList.indexOf(file2);
if (i1 >= 0 && i2 >= 0) {
return (i1 - i2);
} else if (i1 >= 0) {
return -1;
} else if (i2 >= 0) {
return 1;
} else {
return getName().compareTo(file2.getName());
}
}
}
}
}