public static XModelObject getJarEntryObject(IProject p, String jarFile, String entry) {
   if (p == null) {
     IFile f = EclipseResourceUtil.getFile(jarFile);
     if (f == null) return null;
     p = f.getProject();
   }
   if (p == null) return null;
   IModelNature n = EclipseResourceUtil.getModelNature(p);
   XModel model = null;
   if (n != null) {
     model = n.getModel();
   } else {
     XModelObject o = EclipseResourceUtil.createObjectForResource(p);
     if (o != null) model = o.getModel();
   }
   if (model == null) return null;
   XModelObject[] fs = FileSystemsHelper.getFileSystems(model).getChildren();
   for (XModelObject s : fs) {
     String loc =
         Paths.expand(s.get(XModelObjectConstants.ATTR_NAME_LOCATION), model.getProperties());
     if (new File(loc).equals(new File(jarFile))) {
       XModelObject result = s.getChildByPath(entry);
       if (result == null && entry != null) {
         int q = entry.indexOf('/');
         int d = entry.indexOf('.');
         if (q > d && d >= 0) {
           String entry1 = entry.substring(0, q).replace('.', '/') + entry.substring(q);
           result = s.getChildByPath(entry1);
         }
       }
       if (result != null) return result;
     }
   }
   return (n == null) ? null : n.getModel().getByPath("/" + entry); // $NON-NLS-1$
 }
 public void synchronize() {
   XModelObject o = getXModelObject();
   IFile f1 = super.getFile();
   if (o == null || o.getPath() == null) return;
   IFile f2 = getFileByObject(o);
   if (!f1.equals(f2) && f2 != null) hackSetFile(f2);
 }
 public boolean isFileChanged() {
   XModelObject o = getXModelObject();
   IFile f1 = super.getFile();
   if (o == null || o.getPath() == null) return false;
   IFile f2 = getFileByObject(o);
   return !f1.equals(f2);
 }
 public void revalidate() {
   IFile f = getFile();
   if (f == null || f.equals(super.getFile())) return;
   try {
     Field field = FileEditorInput.class.getDeclaredField("file"); // $NON-NLS-1$
     field.setAccessible(true);
     field.set(this, f);
   } catch (NoSuchFieldException e) {
     ModelUIPlugin.getPluginLog().logError(e);
   } catch (IllegalArgumentException e) {
     ModelUIPlugin.getPluginLog().logError(e);
   } catch (IllegalAccessException e) {
     ModelUIPlugin.getPluginLog().logError(e);
   }
 }
 private static IEditorInput convertFileInput(IFileEditorInput input) {
   IFileEditorInput fi = (IFileEditorInput) input;
   IFile f = fi.getFile();
   if (f != null && !f.isSynchronized(IResource.DEPTH_INFINITE)) {
     try {
       f.refreshLocal(IResource.DEPTH_INFINITE, null);
     } catch (CoreException e) {
       // ignore
     }
   }
   XModelObject o = EclipseResourceUtil.getObjectByResource(f);
   if (o == null) {
     o = EclipseResourceUtil.createObjectForResource(f);
   }
   return (o == null || o.getFileType() != XModelObject.FILE)
       ? input
       : new XModelObjectEditorInput(getMainObject(o));
 }
 public boolean equals(Object o) {
   getXModelObject();
   if (this == o) return true;
   if (o instanceof FileEditorInput) {
     if (getFile() == null) return false;
     FileEditorInput other = (FileEditorInput) o;
     IFile f1 = getFile();
     IFile f2 = other.getFile();
     if (f1 == null || f2 == null) return f1 == f2;
     if (f1.equals(f2)) return true;
     IPath loc1 = f1.getLocation();
     IPath loc2 = f2.getLocation();
     if (loc1 == null || loc2 == null) return loc1 == loc2;
     return loc1.equals(loc2);
   }
   if (o instanceof XModelObjectEditorInput) {
     return object.equals(((XModelObjectEditorInput) o).getXModelObject());
   }
   return false;
 }
 public boolean exists() {
   IFile f = getFile();
   return f != null && f.exists();
 }
 public String getToolTipText() {
   IFile f = (IFile) EclipseResourceUtil.getResource(object);
   if (f != null && f.exists()) return f.getLocation().toString();
   return object.getPresentationString();
 }