TweetFollow Us on Twitter

Sep 96 Dialog Box
Volume Number:12
Issue Number:9
Column Tag:Dialogue Box

Dialog Box

By Matt Neuburg, letters@mactech.com

Hello Java, Good-bye OLE and OpenDoc

Sometimes, when we are lucky, reality sneaks up and screams “Hello!” when we most need it.

Thinking about how to write extensible applications in Java, I was listing requirements, procedures, and issues for communication and control between the main application and the extensions. What is the minimum core of OLE and OpenDoc? Does it really have to be as complicated as OpenDoc?

Then reality suddenly screamed, “Hello! Isn’t a Java-enabled browser one of the most extensible applications we have ever seen? How is that done?”

A browser can load and run essentially “anonymous” applets, of any complexity, that can do just about anything - even bring up windows and work with files (when permitted). What more could we want?

Well, for extensible applications in general, we could want custom menus, closer integration into the application, and more access to the application’s data. As it happens, all this is possible - right now - with Java; the implementation of a browser shows us how.

We extend the Applet class to make our own applets. The Applet class establishes a few “entry points” (methods) through which a browser can tell the applet to initialize itself, run, update, and so on. The applet can do whatever else you want in addition to these few responsibilities.

For its part, the browser must implement the AppletContext interface, which dictates the services the browser must provide to any applet. If both sides fulfill these contracts, the browser can use Java’s ClassLoader to load an applet from a local or remote file, place it into the browser’s own window, and run it.

To implement our own extensible applications, we don’t have to use applets (although we certainly can); we just need to set up the kind of contracts established by the Applet class and the AppletContext interface. Perhaps we will include ways to share menus and application data; the particular methods are our call (so to speak).

Now think of the silliness of first implementing a Java-enabled OpenDoc part, then rewriting applications to accept OpenDoc parts! Or just rewriting for OpenDoc in general. Why not rewrite the applications in Java, and get straight to the point?

“Hello!” Which is the actually existing revolution - Java, or OLE/OpenDoc?

It’s time to tell OLE and OpenDoc (and VBXs, OCXs, XFCNs, MOBJs, XTNDs, and so on) “Good-bye!”

“Uncle Dave” Moffat

Mac Web Tools Redux

In the May 1996 Dialogue Box, Ziya Oz writes:

“At the last Macworld Expo in Boston, I asked myself: If Ceneca was not formed by ex-Taligent people, would they have developed Page/SiteMill for the Mac OS first? Would they even have developed for the Mac at all? My answers are: No and No again.”

His conclusions are erroneous. Ceneca initially planned to write PageMill for Windows. However, when they spoke to Web authors at several companies, they found out that Macintosh was the dominant platform for creating Web content. Ceneca therefore changed their strategy and developed a Mac version instead. (I learned this from Robert Seidl of Ceneca/Adobe at the WWDC.)

The majority of Web content is created on Macs. Macintosh is also the second most popular Web server, after UNIX. A developer writing content tools would be wise to publish a Mac version of his product.

Terry Morse

Language Wars Redux

Many Mac OS programmers still code in Pascal - and that’s OK. But they (and MacTech Magazine, too) should give another language a try. No, I’m not talking about C++ or Java; I’m talking about Oberon-2 (Pascal’s grandchild, so to speak). Interested? Then read on.

MacOberon, Oberon System 3, and Oberon/F generate 68K code. PowerOberon generates PowerPC code, but has no linker yet. Or you can use MPW. The URLs are:

ftp://ftp.inf.ethz.ch/pub/Oberon/

ftp://oberon.ssw.uni-linz.ac.at/pub/Oberon/PowerMac/

http://frodo.informatik.uni-ulm.de/projekte/MPWOberon/

As a CodeWarrior, I hope that Metrowerks will integrate this fantastic language into their IDE. But, till then, I’m perfectly happy with C++ and PowerPlant.

By the way, to “serious” Oberon users I recommend Programming in Oberon and Object-oriented Programming in Oberon-2 (both from Addison-Wesley).

Paul E. Sevinc

[Our paucity of articles written in Oberon is not due to any want of trying. In fact, we have a review of Oberon/F in the works; watch for it in a future issue. As always, the best way to ensure coverage of your favorite area of expertise is to participate by writing us an article yourself - man]

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

GarageSale 7.0.7 - Create outstanding eB...
GarageSale is a slick, full-featured client application for the eBay online auction system. Create and manage your auctions with ease. With GarageSale, you can create, edit, track, and manage... Read more
SpamSieve 2.9.28 - Robust spam filter fo...
SpamSieve is a robust spam filter for major email clients that uses powerful Bayesian spam filtering. SpamSieve understands what your spam looks like in order to block it all, but also learns what... Read more
Thunderbird 45.7.1 - Email client from M...
As of July 2012, Thunderbird has transitioned to a new governance model, with new features being developed by the broader free software and open source community, and security fixes and improvements... Read more
Opera 43.0.2442.991 - High-performance W...
Opera is a fast and secure browser trusted by millions of users. With the intuitive interface, Speed Dial and visual bookmarks for organizing favorite sites, news feature with fresh, relevant content... Read more
OnyX 3.2.4 - Maintenance and optimizatio...
OnyX is a multifunction utility that you can use to verify the startup disk and the structure of its system files, to run miscellaneous maintenance and cleaning tasks, to configure parameters in the... Read more
VueScan 9.5.71 - 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
Slack 2.5.1 - Collaborative communicatio...
Slack is a collaborative communication app that simplifies real-time messaging, archiving, and search for modern working teams. Version 2.5.1: New The way we load teams you don't view often has been... Read more
HandBrake 1.0.3 - Versatile video encode...
HandBrake is a tool for converting video from nearly any format to a selection of modern, widely supported codecs. Features Supported Sources VIDEO_TS folder, DVD image or real DVD (unencrypted... Read more
Vivaldi 1.7.735.46 - An advanced browser...
Vivaldi is a browser for our friends. In 1994, two programmers started working on a web browser. Our idea was to make a really fast browser, capable of running on limited hardware, keeping in mind... Read more
Vivaldi 1.7.735.46 - An advanced browser...
Vivaldi is a browser for our friends. In 1994, two programmers started working on a web browser. Our idea was to make a really fast browser, capable of running on limited hardware, keeping in mind... Read more

Last week on Pocket Gamer
If you’re wondering what’s going on in the wider world of portable gaming, our sister site PocketGamer has you covered. Each week we like to check in on the PG team and see what they’ve been preoccupied with. From the latest on the Nintendo Switch... | Read more »
Mudd Masher arrives this week
Atooi Games, the minds behind Totes the Goat and Mutant Mudds, have a new game in the works -- Mudd Masher. The game, a hybrid of the independent studio's first two titles, is expected to launch this week on March 2. [Read more] | Read more »
The best sales on the App Store this wee...
The App Store has quite an exciting lineup of discount games this week that range across a variety of genres. It's a great opportunity to catch up on some of the premium games you may have been holding off on -- and some you can even grab for free... | Read more »
The best new games we played this week
Ah, here we are again at the close of another busy week. Don't rest too easy, though. We had a lot of great new releases in mobile games this week, and now you're going to have to spend all weekend playing them. That shouldn't be too much of a... | Read more »
Rollercoaster Tycoon Touch Guide: How to...
| Read more »
Rabbids Crazy Rush Guide: How to unlock...
The Rabbids are back in a new endless running adventure, Rabbids Crazy Rush. It's more ridiculous cartoon craziness as you help the little furballs gather enough fuel (soda) to get to the moon. Sure, it's a silly idea, but everyone has dreams --... | Read more »
Tavern Guardians (Games)
Tavern Guardians 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: Tavern Guardians is a Hack-and-Slash action game played in the style of a match-three. You can experience high pace action... | Read more »
Slay your way to glory in idle RPG Endle...
It’s a golden age for idle games on the mobile market, and those addictive little clickers have a new best friend. South Korean developer Ekkorr released Endless Frontier last year, and players have been idling away the hours in the company of its... | Read more »
Tiny Striker: World Football Guide - How...
| Read more »
Good news everyone! Futurama: Worlds of...
Futurama is finding a new home on mobile in TinyCo and Fox Interactive's new game, Futurama: Worlds of Tomorrow. They're really doing it up, bringing on board Futurama creator Matt Groening along with the original cast and writers. TinyCo wants... | Read more »

Price Scanner via MacPrices.net

13-inch 2.7GHz Retina MacBook Pro on sale for...
B&H Photo has the 2015 13″ 2.7GHz/128GB Retina Apple MacBook Pro on sale for $150 off MSRP. Shipping is free, and B&H charges NY tax only: - 13″ 2.7GHz/128GB Retina MacBook Pro (MF839LL/A): $... Read more
13-inch 1.6GHz/256GB MacBook Air on sale for...
Newegg has the 13″ 1.6GHz/256GB MacBook Air (MMGG2LL/A) on sale for $1029.99 including free shipping. Their price is $170 off MSRP, and it’s the lowest price available for this model. Choose Newegg... Read more
Apple refurbished Apple TVs available for up...
Apple has Certified Refurbished 32GB and 64GB Apple TVs available for up to $30 off the cost of new models. Apple’s standard one-year warranty is included with each model, and shipping is free: -... Read more
27-inch 3.3GHz 5K iMac on sale for $2099, sav...
B&H Photo has the 27″ 3.3GHz 5K Apple iMac on sale for $2099.99 including free shipping plus NY sales tax only. Their price is $200 off MSRP. Amazon also has the 27″ 3.3GHz 5K iMac on sale for $... Read more
21-inch iMacs on sale for up to $111 off MSRP
B&H Photo has select 21″ Apple iMacs on sale for up to $110 off MSRP, each including free shipping plus NY sales tax only: - 21″ 2.8GHz iMac: $1189 $110 off MSRP - 21″ 1.6GHz iMac: $999 $100 off... Read more
12-inch 1.2GHz Retina MacBooks on sale for $2...
Newegg has the 12″ 1.2GHz Space Gray Retina MacBook (sku MLH82LL/A) on sale for $1349.99 including free shipping. Their price is $250 off MSRP, and it’s the lowest price available for this model.... Read more
13-inch MacBook Airs on sale for $100 off MSR...
B&H Photo has 13″ MacBook Airs on sale for $100 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 13″ 1.6GHz/128GB MacBook Air (MMGF2LL/A): $899 $100 off MSRP - 13″ 1.6GHz/... Read more
9-inch 32GB Silver iPad Pro on sale for $549,...
B&H Photo has the 9.7″ 32GB Silver Apple iPad Pro on sale for $549 for a limited time. Shipping is free, and B&H charges NY sales tax only. Their price is $50 off standard MSRP for this model... Read more
13-inch 2.0GHz Apple MacBook Pros on sale for...
B&H has the non-Touch Bar 13″ 2.0GHz MacBook Pros in stock today and on sale for $100 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 13″ 2.0GHz MacBook Pro Space Gray (... Read more
15-inch Touch Bar MacBook Pros on sale for up...
B&H Photo has the new 2016 15″ Apple Touch Bar MacBook Pros in stock today and on sale for up to $150 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 15″ 2.7GHz Touch Bar... Read more

Jobs Board

*Apple* Solutions Consultant - Apple (United...
# Apple Solutions Consultant Job Number: 55676865 Los Angeles, California, United States Posted: Feb. 22, 2017 Weekly Hours: 40.00 **Job Summary** As an Apple Read more
Programmer/Editor *Apple* Music Dance - App...
# Programmer/Editor Apple Music Dance Job Number: 55565967 Culver City, California, United States Posted: Feb. 23, 2017 Weekly Hours: **Job Summary** Apple Music Read more
Digital Marketing Specialist - *Apple* iClo...
# Digital Marketing Specialist - Apple iCloud Job Number: 54729233 Culver City, California, United States Posted: Feb. 22, 2017 Weekly Hours: 40.00 **Job Summary** Read more
Marketing Specialist, iTunes & *Apple*...
# Marketing Specialist, iTunes & Apple Music Job Number: 55704205 Culver City, California, United States Posted: Feb. 23, 2017 Weekly Hours: 40.00 **Job Summary** Read more
*Apple* Wireless Lead - T-ROC - The Retail O...
…of knowledge in wireless sales and activations to the Beautiful and NEW APPLE Experiencestore within MACYS. THIS role, APPLE Wireless Lead, isbrandnewas MACYS Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.