var { classes: Cc, interfaces: Ci, utils: Cu } = Components; Cu.importGlobalProperties(["File", "Directory"]); var tmpFile, tmpDir; addMessageListener("entries.open", function (e) { tmpFile = Cc["@mozilla.org/file/directory_service;1"] .getService(Ci.nsIDirectoryService) .QueryInterface(Ci.nsIProperties) .get('TmpD', Ci.nsIFile) tmpFile.append('file.txt'); tmpFile.createUnique(Components.interfaces.nsIFile.FILE_TYPE, 0o600); tmpDir = Cc["@mozilla.org/file/directory_service;1"] .getService(Ci.nsIDirectoryService) .QueryInterface(Ci.nsIProperties) .get('TmpD', Ci.nsIFile) tmpDir.append('dir-test'); tmpDir.createUnique(Components.interfaces.nsIFile.DIRECTORY_TYPE, 0o700); var file1 = tmpDir.clone(); file1.append('foo.txt'); file1.create(Components.interfaces.nsIFile.NORMAL_FILE_TYPE, 0o600); var dir1 = tmpDir.clone(); dir1.append('subdir'); dir1.create(Components.interfaces.nsIFile.DIRECTORY_TYPE, 0o700); var file2 = dir1.clone(); file2.append('bar..txt'); // Note the double .. file2.create(Components.interfaces.nsIFile.NORMAL_FILE_TYPE, 0o600); var dir2 = dir1.clone(); dir2.append('subsubdir'); dir2.create(Components.interfaces.nsIFile.DIRECTORY_TYPE, 0o700); sendAsyncMessage("entries.opened", { data: [ new Directory(tmpDir.path), File.createFromNsIFile(tmpFile) ] }); }); addMessageListener("entries.delete", function(e) { tmpFile.remove(true); tmpDir.remove(true); sendAsyncMessage("entries.deleted"); });