TweetFollow Us on Twitter

November 92 - Blueprint-and OODL Framework

Blueprint-and OODL Framework

Howard Oakley

MCL's need…

Although Macintosh Common Lisp (MCL) 2.0 provides a lot of classes which make the development of applications straightforward, many of those using it feel the need for a more complete application framework, perhaps with the functionality of MacApp. So, at the time that the OODL SIG was starting to get going, some of us gathered electronically and are conspiring to build such an application framework, named "Blueprint" by Jeff Alger (a co-conspirator).

MCL has good window/view, dialog and dialog item classes, the latter in particular having been extended to provide almost every form of control and widget known to man, and menus are also well catered for. However, an examination of the class heterarchy (see the diagram on the facing page) with MacApp eyes shows that there are many gaps, particularly in command handling, printing and documents. In truth some of the classes which look attractive are in fact very shallow-for instance, the Application class arrived during the late development stage of MCL 2.0, and really handles AppleEvents and nothing else.

Discussion in the info-mcl mail group and elsewhere has suggested that the lack of a thorough application framework may be one of the major factors limiting the number of products developed with MCL, and we are all agreed that we would rather see the MCL development team spending their time making version 2.1 even better, rather than trying to design and build Blueprint too. So, it was a natural community project for those in the new OODL SIG to work on.

... IS dylan's gain

The other target platform at which we are aiming is Dylan, of course. We believe that having a solid but efficient and compact application framework coded in Common Lisp will be a good foundation for when copies of Dylan start to arrive amidst APDA's soluble packing chips. In case you have still not read a copy of Apple's initial language definition for Dylan, at least in its first incarnation its syntax is strongly Lisp (although there are hints that additional 'more popular' syntaxes will also be supported in the future).

A future with Dylan has some serious consequences on Blueprint's design. There is already a massive and highly sophisticated application framework for Common Lisp systems, the Common Lisp Interface Manager (CLIM). This is currently offered for other platforms at version 2.0, but is still in its previous version for MCL. None of us conspiring to Blueprint would wish to be seen to attempt to subvert or compete with CLIM, which is – and should remain – the standard cross-platform framework for Common Lisp. However, it is by no means small, and it does not quite enable the development of applications fully compliant with the Apple Human Interface Guidelines. Blueprint will be much smaller and must be oriented at providing those developing true stand-alone Macintosh applications in MCL or Dylan with full compliance with the guidelines.

Another significant application framework used in the Common Lisp world is Garnet, which has recently been made available in the public domain. However, even though Garnet is rather leaner than CLIM, it is still large and does not use the Common Lisp Object System (CLOS), the current (and now draft ANSI) OOP system for Common Lisp. This would clearly not be tenable when we are promoting MCL as an OODL!

PROGRESS

This summer has seen active discussion of a number of major design issues. We are agreed that from the outset, Blueprint will support fully factored applications. However, there was a malicious rumor circulating to the effect that trying to achieve this in MCL 2.0 would prove a problem; following some preliminary work, I can now confirm that not only is it possible, but it seems considerably easier than in MacApp or any of the 'mainstream' compiled languages.

Others within our informal group have been looking at architectural issues, and I am delighted that Jeff Alger has his Solution Based Modeling hat on, and is making sure that whatever we do will work well with the Goldstein and Alger approach to development, as well as having a sound basis. With a surprisingly large number of renegades from a MacApp past, I am confident that we will end up with a framework which is practical as well as theoretically proper-and lean, mean and purposeful.

Another area of general agreement is that Blueprint will be available in source code, and essentially free and without runtime licensing cost through OODL SIG. Our group has the benefit of many great minds, and our aspirations are high. If you feel that you can make a contribution-particularly if you can write good Common Lisp, as it is in 'implementors' that we are weakest-please mail me. n

NOTE: 'Blueprint' is but a working name, and no claim is made for it as a trade mark.

 
AAPL
$99.18
Apple Inc.
-1.57
MSFT
$45.90
Microsoft Corpora
-0.46
GOOG
$568.27
Google Inc.
-9.09

MacTech Search:
Community Search:

Software Updates via MacUpdate

Cocktail Family License (5 Macs) 7.6.1 -...
Cocktail is a general purpose utility for OS X that lets you clean, repair and optimize your Mac. It is a powerful digital toolset that helps hundreds of thousands of Mac users around the world get... Read more
Cocktail 8.0 Beta 2 - General maintenanc...
Cocktail is a general purpose utility for OS X that lets you clean, repair and optimize your Mac. It is a powerful digital toolset that helps hundreds of thousands of Mac users around the world get... Read more
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

Latest Forum Discussions

See All

Banner Saga (Games)
Banner Saga 1.0.17 Device: iOS Universal Category: Games Price: $9.99, Version: 1.0.17 (iTunes) Description: NOTE: The Banner Saga does NOT run on iPhone 4. iPhone 4S and more modern devices recommended. | Read more »
Beatbuddy HD (Games)
Beatbuddy HD 1.0.2 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.2 (iTunes) Description: **IMPORTANT** Beatbuddy runs only on iPhone 6, 6 Plus, 5, 5c, 5s, iPad 4, iPad Mini Retina and iPad Air. | Read more »
iKeywi - Customizable 5-Row Keyboard (U...
iKeywi - Customizable 5-Row Keyboard 1.0 Device: iOS Universal Category: Utilities Price: $.99, Version: 1.0 (iTunes) Description: Want to add an extra row to your iPhone/iPad? One of the most popular keyboard extension in iOS... | Read more »
Manage Your Cloud – Wunderlist Now Suppo...
Manage Your Cloud – Wunderlist Now Supports Dropbox Posted by Jessica Fisher on October 1st, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
Nexticy Review
Nexticy Review By Jennifer Allen on October 1st, 2014 Our Rating: :: IDEAL FORM CREATIONiPad Only App - Designed for the iPad Nexticy allows you to make your own forms for research purposes or to organize your business better. It’s... | Read more »
Tiny Troopers: Alliance Marches onto the...
Tiny Troopers: Alliance Marches onto the App Store Tomorrow Posted by Jessica Fisher on October 1st, 2014 [ permalink ] Tiny Troopers: Alliance, by Kukouri, is a | Read more »
HeroCraft Introduces Unlimited Sequel to...
HeroCraft Introduces Unlimited Sequel to WW2: Sandbox. Strategy & Tactics Posted by Jessica Fisher on October 1st, 2014 [ permalink ] | Read more »
RGB Express Review
RGB Express Review By Jennifer Allen on October 1st, 2014 Our Rating: :: DELIGHTFUL PUZZLINGUniversal App - Designed for iPhone and iPad Guide trucks along their delivery routes in RGB Express, a testing but charming puzzle game... | Read more »
The Sagas of Fire*Wolf (Games)
The Sagas of Fire*Wolf 1.0 Device: iOS Universal Category: Games Price: $9.99, Version: 1.0 (iTunes) Description: | Read more »
BuggyFun Review
BuggyFun Review By Amy Solomon on October 1st, 2014 Our Rating: iPad Only App - Designed for the iPad BuggyFun allows children to create their own tracks for bugs to interact with for a unique open-ended experience.   | Read more »

Price Scanner via MacPrices.net

ASUS, Lenovo, and Amazon Slug It Out For Tabl...
According to market intelligence firm ABI Research, Apple and Samsung have led the touchscreen tablet market by a substantial margin since Apple energized the category back in 2010. However, ABI says... Read more
Amazon offers 13-inch MacBook Air for $899, $...
Amazon.com has the 13″ 1.4GHz 128GB MacBook Air on sale for $100 off MSRP including free shipping: - 13″ 1.4GHz 128GB MacBook Air: $899.99 Read more
Apple resting On Its iPhone Laurels? – The ‘B...
Apple calls its new iPhone 6 and 6 Plus “The Biggest Advancements in iPhone History,” but does reality live up to the hype? “Seldom have so many waited so breathlessly for so little,” tweeted veteran... Read more
Roundup of Apple Mac and iPad Education disco...
Purchase a new Mac or iPad at The Apple Store for Education and take up to $300 off MSRP. All teachers, students, and staff of any educational institution qualify for the discount. Shipping is free,... Read more
Apple Boycotts German Magazine Computer Bild...
Apple has revoked its PR accreditation of Germany’s Computer Bild, Europe’s best-selling PC magazine, in reaction to Bild’s posting of a “#Bentgate” YouTube video. Axel Telzerow, editor in chief of... Read more
iPhone 6 & iPhone 6 Plus Available in Chi...
Apple has announced that iPhone 6 and iPhone 6 Plus will be available in China beginning Friday, October 17 from the Apple Online Store (http://www.apple.com), Apple’s retail stores, and an expansive... Read more
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

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.