Bug 3555 source for binaries - 'defaults' button does not work (1G840M4)
AK (1/25/01 2:43:33 PM) 1. create a java project 2. open the properties page for rt.jar in the project 3. clear the 'Sources JAR file' field 4. press 'Defaults' nothing happens NOTES: EG (2/1/01 10:02:53 AM) wait until we finish the Library presentation issue.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/SourceAttachmentBlock.java
status.setError(NewWizardMessages.getString("SourceAttachmentBlock.filename.error.notvalid")); 
					return status;
				}
				fFileVariablePath= JavaCore.getClasspathVariable(varName);
				if (fFileVariablePath == null) {
					status.setError(NewWizardMessages.getString("SourceAttachmentBlock.filename.error.varnotexists")); 
					return status;
				}
				resolvedPath= fFileVariablePath.append(filePath.removeFirstSegments(1));
				
				if (resolvedPath.isEmpty()) {
					status.setWarning(NewWizardMessages.getString("SourceAttachmentBlock.filename.warning.varempty")); 
					return status;
				}
				File file= resolvedPath.toFile();
				if (!file.isFile()) {				
					String message= NewWizardMessages.getFormattedString("SourceAttachmentBlock.filename.error.filenotexists", resolvedPath.toOSString()); 
					status.setWarning(message);
					return status;
				}						
				fResolvedFile= file;
				
			} else {
				File file= filePath.toFile();
				IResource res= fRoot.findMember(filePath);
				if (res != null) {
					file= res.getLocation().toFile();
				}
				if (!file.isFile()) {
					String message=  NewWizardMessages.getFormattedString("SourceAttachmentBlock.filename.error.filenotexists", filePath.toString());