TweetFollow Us on Twitter

May 92 - Software Review - Userland Frontier

Software Review - Userland Frontier

John W. Baxter

In late January, Dave Winer and the rest of the folks at Userland shipped version 1.0 of Frontier. Frontier is a tool with which you can operate the growing number of modern Macintosh applications which can be controlled by sending them suitable Apple Events. Frontier also provides a clean-looking method by which very easily changed menus can be added to an AppleEvent-savvy application (this feature is called "Menu Sharing"). Here is a brief look at Frontier.

Drive those Applications

Frontier has an easy-to-use scripting language which controls both Frontier and other AppleEvent-aware applications. The language is presented in outline form, and Frontier has a good outline editor. The structure of a script is created by the levels of the outline. For example, here is an if statement:
if people.JWB.age > 50
    msg ("John, you are getting old.")
else
    msg ("Come on, John, tell the truth")

The statements controlled by the true branch of the if statement (here, just a msg verb) are indented one outline level inferior to the if. The next statement at the same level as the if marks the end of the controlled statements. Here, that statement is an else. Again, the else controls those statements inferior to it in the outline. As with outlining programs in general, you can hide the details and see only the if and else lines if you like.

The supplied language verbs include many which are implemented in the Frontier kernel and many others which are simply scripts themselves. A full list is well beyond the scope of this column, but one handy structure for script writing is

   on explore(path)
    fileloop (aFile in path)
        if (file.isFolder(aFile))
            explore(aFile)
        else
            « do something to each aFile
            « the « introduces comments

where path identifies an HFS directory, and aFile takes on the path to each file and directory contained in that directory. You can easily recurse down through the directory levels, as shown. The on construct introduces a script (routine).

The outlining capability is useful in its own right, but is limited to single-line headers. The outline editor is fully scriptable. There is also a simple word processing editor, and word processing documents can be maintained within Frontier. That editor is suitable for writing documentation about your Frontier scripts-it is not suitable for the next great novel. The word processing editor is also fully scriptable.

Things are stored in Frontier in a database, managed as a hierarchy of tables starting at a table called root. One of the items in the root table is a table called people, which has items named with the initials of each user of a given Frontier. The first example above assumes that my table, whose full address is root.people.JWB, contains an entry named age whose value is a number. A table entry consists of a name and a value. The value may be as simple as a number or string or as complex as a word processing document, an outline or script, or any Macintosh structure stored in binary form. The set of table manipulation verbs is fully scriptable.

Whose Menus are They, Anyhow

Using AppleEvents, an application can arrange for Frontier to supply one or more menus (which can include hierarchical submenus). A simple but solid-looking protocol provides for the application to inform Frontier of selections of the items in the menus Frontier has defined. The user provides a Frontier script for each such item. That script will usually send one or more AppleEvents to the application requesting services or directing actions. Provision is made for the user to edit the menus within Frontier and for the menus to be adjusted before the next time they are pulled down by the user if they have been edited. If Frontier shuts down, the application is notified and deletes the shared menus; if Frontier launches while a menu-sharing application is running, the menus get added.

Additionally, most of Frontier's own menus are fully editable by the user. Again, each item has a script associated with it. The outline editor (slightly modified) is used to edit menus and assign the scripts.

Userland supplies source code in C for the routines that need to be added to an application to support menu sharing. I've looked at MacApp 3.0, and at this writing I have a working subclass of TApplication which supports Frontier menu sharing. Unfortunately, that subclass is not yet ready for publication.

Agent 86

One of the tables in Frontier contains "agents". These agents are scripts which receive time periodically from Frontier. Frontier ships with an agent which updates a clock in Frontier's main window. An agent can trigger arbitrarily complex scripts. Frontier is pretty good about giving processing time to agents-for example, the agents are given time while Frontier is in the background awaiting a reply to an AppleEvent it sent out as requested by a script.

Almost Faceless Mini-Applications ("Appletts")

Frontier makes sense as a controller for small, nearly faceless applications which provide simple services. This is one of the directions software is moving at the moment, the do-one-thing-and-do-it-well idea. Userland practices what they preach in this area: Frontier's on-line documentation is provided by a separate DocServer application. A control-double-click on any Frontier verb ensures that DocServer is running, sends it AppleEvents directing that the appropriate documentation be displayed, and brings DocServer to the front. There is no technical reason why DocServer wouldn't be available to your application, too. I don't know the legal details at this time.

Paper Documentation

Yes, there is some. A user manual and a scripting language ("UserTalk") reference guide were written by Dan Shafer. They explain Frontier pretty clearly, though some of the more obscure verbs are only referenced, with the DocServer material (also prepared by Dan) being the only documentation.

Apple Object Model

Frontier scripts have the power to create and send AppleEvents which make use of the Object Model. This capability should be highly useful in testing MacApp-based applications which support the Object Model and the Object Support Library. A developer may also wish to supply a suitable "suite" of Frontier scripts to the users of an application.

What's In It for Me?

If you are writing an AppleEvent-driven application, Frontier represents a potentially valuable testing and debugging tool. If your application might benefit from the shared menu idea, that is easy to add. With or without Frontier, you were going to support AppleEvents for commanding your application, weren't you? There is no extra work there (and Userland will help you prepare the file which sets up the necessary verbs in Frontier to drive your application the way you want it driven).

Besides all that, Frontier is an amusing "toy", too. I have a script which runs my FarSide calendar the first time each day that Frontier starts up (I have Frontier starting from my Startup Items folder).

Availability

Frontier is available direct from Userland. Recently, Frontier has also found its way into the mail order and retail distribution system. Userland can be found in the Third Party area on AppleLink and in their own forum on CompuServe. Their address is UserLand Software, Inc., 490 California Ave, Palo Alto, CA 94306. Telephone (415) 325-5700; fax (415) 325-9829.
 
AAPL
$100.99
Apple Inc.
+0.88
MSFT
$46.27
Microsoft Corpora
-0.17
GOOG
$574.86
Google Inc.
-1.50

MacTech Search:
Community Search:

Software Updates via MacUpdate

QuickBooks 2015 16.0.0.1352 R1 - Financi...
QuickBooks 2015 helps you manage your business easily and efficiently. Organize your finances all in one place, track money going in and out of your business, and spot areas where you can save.... Read more
Mac DVDRipper Pro 5.0.1 - Copy, backup,...
Mac DVDRipper Pro is the DVD backup solution that lets you protect your DVDs from scratches, save your batteries by reading your movies from your hard disk, manage your collection with just a few... Read more
Apple OS X bash Update 1.0 - Fix for sec...
The OS X bash Update fixes a security flaw in the bash UNIX shell on OS X 10.9.5 (also on OS X 10.8 and 10.7 [see Related Links below]). OS X 10.9.5 or later Downloads for OS X 10.8 and OS X 10.7 in... Read more
SyncTwoFolders 2.0.5 - Syncs two user-sp...
SyncTwoFolders simply synchronizes two folders. It supports synchronization across mounted network drives and it is a possibility to run a simulation showing in a log what will be done. Please visit... Read more
FinderPop 2.5.7 - Classic Mac utility, n...
FinderPop is a Universal preference pane that extends OS X's contextual menus using a FinderPop Items folder much as the Apple Menu Items folder used to do for the Apple menu. It has other features... Read more
VueScan 9.4.45 - Scanner software with a...
VueScan is a scanning program that works with most high-quality flatbed and film scanners to produce scans that have excellent color fidelity and color balance. VueScan is easy to use, and has... Read more
LibreOffice 4.3.2.2 - Free Open Source o...
LibreOffice is an office suite (word processor, spreadsheet, presentations, drawing tool) compatible with other major office suites. The Document Foundation is coordinating development and... Read more
calibre 2.4 - Complete e-library managem...
Calibre is a complete e-book library manager. Organize your collection, convert your books to multiple formats, and sync with all of your devices. Let Calibre be your multi-tasking digital... Read more
Default Folder X 4.6.9b1 - Enhances Open...
Default Folder X attaches a toolbar to the right side of the Open and Save dialogs in any OS X-native application. The toolbar gives you fast access to various folders and commands. You just click... Read more
Beamer 2.0.4 - Stream any movie file fro...
Beamer streams to your Apple TV.... Plays any movie file - Just like the popular desktop movie players, Beamer accepts all common formats, codecs and resolutions. AVI, MKV, MOV, MP4, WMV, FLV. To... Read more

Latest Forum Discussions

See All

It Came From Canada: Angry Birds: Transf...
Anyone afraid that throwing Transformers into the Angry Birds mix would result in a Michael Bay-level of childhood pillaging can rest easy. While Rovio’s famous fowls may be a 21st century staple, Angry Birds: Transformers wears its affection for... | Read more »
Galaxy Trucker Review
Galaxy Trucker Review By Rob Thomas on September 30th, 2014 Our Rating: :: IN FOR THE LONG HAULiPad Only App - Designed for the iPad We got a great big convoy, rockin’ through the night… the endless night of outer space, that is.... | Read more »
Moon and Sun – children’s book Review
Moon and Sun – children’s book Review By Amy Solomon on September 30th, 2014 Our Rating: Moon and Sun is a fable-like children’s book with lush illustrations.   Developer: Marcio Monteiro Price: $3.99 Version: 1.0 App Reviewed on... | Read more »
Kairosoft Finally Brings The Pyraplex to...
Kairosoft Finally Brings The Pyraplex to iOS Posted by Jessica Fisher on September 30th, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
Yeti’s Parole Officer Review
Yeti’s Parole Officer Review By Jennifer Allen on September 30th, 2014 Our Rating: Universal App - Designed for iPhone and iPad Yeti’s Parole Officer proves that looks aren’t everything in this entertaining, if plain, piece of... | Read more »
Record Keeper and World Wide Words – Two...
Record Keeper and World Wide Words – Two New Final Fantasy Games Arrive on iOS in Japan Posted by Ellis Spice on September 30th, 2014 [ permalink ] | Read more »
iPollute Review
iPollute Review By Nadia Oxford on September 30th, 2014 Our Rating: :: iPOLLUTE, uPOLLUTEUniversal App - Designed for iPhone and iPad iPollute is a delightful-looking pollution simulator, though it’s a bit light on “game” content... | Read more »
This Week at 148Apps: September 22-26, 2...
Your Source For The Latest App Reviews   | Read more »
Kill Shot Review
Kill Shot Review By Jennifer Allen on September 29th, 2014 Our Rating: :: OCCASIONAL MISFIRESUniversal App - Designed for iPhone and iPad Kill Shot is often satisfying, but its more than pushy in-app purchases will leave you... | Read more »
It Came From Canada: Vainglory
I’m going to be straight you with folks. I don’t know much about MOBAs, and I’m certainly no professional. That means I don’t know how well Vainglory, the upcoming multiplayer online battle arena showcased in the most recent Apple keynote, compares... | Read more »

Price Scanner via MacPrices.net

MacBook Airs on sale for $100 off MSRP, start...
Best Buy has the new 2014 MacBook Airs on sale for $100 off MSRP on their online store. Choose free home shipping or free local store pickup (if available). Prices valid for online orders only, in-... Read more
Apple Releases OS X Mavericks bash Update 1.0...
Apple has released a patch update for OS X Mavericks users to address the recently-detected “Shellshock” security bug in BSD UNIX’s bash shell. Apple says only a few Mac users who had manually... Read more
Pivotal Payments Ready for Apple Pay – FlexPo...
Pivotal Payments, a provider of merchant services and global payment processing solutions, has announced its proprietary FlexPoint platform will support credit and debit transactions through Apple’s... Read more
iStabilizer Announces Tabarm — First Friction...
iStabilizer, a specialist in universal lightweight compact tripods, steady cams, dollies, mounts, and remotes for smartphones, tablets, and cameras, announced today the iStabilizer tabArm, the first... Read more
IStabilizer Flex Smartphone Tripod Wins Usa T...
iStabilizer, a specialist in universal lightweight compact tripods, steady cams, and other products for smartphones, tablets, and cameras, has announced today that its iStabilizer Flex smartphone... Read more
13-inch 2.8GHz Retina MacBook Pro on sale for...
B&H Photo has the new 2014 13″ 2.8GHz Retina MacBook Pro on sale for $1699.99 including free shipping plus NY sales tax only. They’ll also include free copies of Parallels Desktop and LoJack for... Read more
15-inch Retina MacBook Pros on sale for up to...
B&H Photo has the new 2014 15″ Retina MacBook Pros on sale for up to $150 off MSRP. Shipping is free, and B&H charges NY sales tax only. They’ll also include free copies of Parallels Desktop... Read more
Get Down to Business On Your iPad With Free N...
Utah based Poem LLC has introduced Nexticy 1.0, a full-featured, affordable (Free) forms application for iPad. Nexticy makes it ‘way easy’ to create, store, retrieve and analyze paper-like forms of... Read more
13-inch Retina MacBook Pros on sale for $100...
Best Buy has 13-inch 2.6GHz Retina MacBook Pros on sale for $100 off MSRP on their online store. Choose free shipping or free local store pickup (if available). Prices are for online orders only, in-... Read more
Reports Outline Claimed 12-Inch Macbook Air D...
Blogger Jack March says that according to information he’s received from an anonymous “source familiar with Apple’s plans,” the next-generation MacBook Air will launch in mid-2015 and be available... Read more

Jobs Board

*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
*Apple* Retail - Multiple Positions (US) - A...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
Senior Event Manager, *Apple* Retail Market...
…This senior level position is responsible for leading and imagining the Apple Retail Team's global event strategy. Delivering an overarching brand story; in-store, Read more
*Apple* Solutions Consultant (ASC) - Apple (...
**Job Summary** The ASC is an Apple employee who serves as an Apple brand ambassador and influencer in a Reseller's store. The ASC's role is to grow Apple Read more
Project Manager / Business Analyst, WW *Appl...
…a senior project manager / business analyst to work within our Worldwide Apple Fulfillment Operations and the Business Process Re-engineering team. This role will work Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.