TweetFollow Us on Twitter

Fun With AppleScript

Volume Number: 20 (2004)
Issue Number: 1
Column Tag: Programming

Getting Started

by Dave Mark

Fun With AppleScript

A few weeks ago, I read an article talking about the changes to AppleScript introduced with the release of Panther. I've always been a big AppleScript fan, but this article really piqued my interest. I've been promising myself to spend some quality time digging into dictionaries, scripting environments, and especially using Interface Builder and AppleScript Studio to add Cocoa elements to AppleScript, and now that I've had enough quality play-time, I wanted to start writing about all this cool stuff.

Start by Setting Up Script Menu

Before we start playing with AppleScript itself, it is worthwhile taking a minute to install Script Menu, the little script icon that appears on the right side of the menu bar and gives you access to a wide range of AppleScripts.

Navigate over to Applications/AppleScript/ and double-click on the script Install Script Menu. The Script Menu icon should appear in your menu bar. My Script Menu is shown in Figure 1. The Script Menu lists scripts from three different places on your hard drive. Local Scripts (also called Library Scripts) are found in the directory /Library/Scripts. User Scripts are found in your home directory, inside /Users/<user name>/Library/Scripts/. And, finally, Application Scripts are found within your User Scripts folder, in a subfolder called /Applications/<appname>/, where <appname> is a folder with the exact same name as the application the scripts are written for.


Figure 1. The Script Menu's menu.

Let's take a look at this in action. Figure 1 shows the vanilla install of Script Menu. The first item, Open Scripts Folder, opens your User Scripts folder in a Finder window. Remember, User Scripts are the scripts you install in your home area.

The second menu item, Hide Library Scripts, removes the Library Scripts from the Script Menu.

Next comes a separator and the list of all the Library Scripts. In this case, all the scripts are divided into subfolders and so appear in the Script Menu divided into submenus.

Add in a User and Application Script

The screen shot in Figure 1 shows Script Menu as it appears out of the box. Let's add a User Script to the menu. Go into the directory /Applications/AppleScript/ and launch the application Script Editor. Select New from the File menu, type in this simple script:

tell application "Finder"
	activate
end tell

Now select Save from the File menu and save the script in the directory /Users/xxx/Library/Scripts/, where xxx is your user name. I saved my script under the name Dave's Test Script.

A quick note about terminology: The directory /Users/xxx/ is called your home directory and can be represented in the Unix world by the tilde character (~). For example, if I typed in the command:

ls /Users/davemark/

it would be exactly the same as typing:

ls ~

You can also use ~xxx to refer to another user's home directory. So this is also equivalent way to refer to davemark's home directory:

ls ~davemark

And this is one way to list the contents of my User Scripts folder:

ls ~davemark/Library/Scripts

As soon as you save the script, it should appear in your Script Menu. Make sure you are still in Script Editor, then open the Script Menu, select your script (it should be at the very bottom), and watch what happens. Your script is executed, and it does what it is supposed to do. Namely, it tells the Finder to activate, to come to the front. And that is exactly what should happen.

Note that you could have created a folder in your ~/Library/Scripts/ folder and placed the script inside that folder. In that case, the folder would have appeared in the Script Menu as a submenu and the script would have appeared as an item inside that submenu. Try it!

Now for some ultimate coolness! Go back into Script Editor and close the window of the script you just created. Next, hold down the option key, click on the Script Menu and select your script again. Instead of running the script, Mac OS X opens the script in Script Editor. An excellent feature!

Your next step is to add an application-specific folder to your User Script directory. The idea here is to have a directory for all your scripted applications and have the scripts for that app appear in the Script Menu whenever that application is front most. You'll see what I mean in a minute.

Start off by creating a folder called Applications in your ~/Library/Scripts/ folder. Within that folder, create a folder with the exact name of one of your applications. For example, create a folder named Finder. Note that spelling is critical or this won't work. Now go into Script Editor and create this script:

tell application "Script Editor"
	activate
end tell

Save the script in the ~/Library/Scripts/Applications/Finder folder. I saved my script under the name Dave's Finder Script. Once the script is saved, click on the Script Menu. If you are in the Finder, your Finder scripts will appear at the bottom of the menu. If you are in another app, the Finder scripts will be replaced by the scripts (if any) for that app.

Figure 2 shows my Script Menu, as selected from within the Finder. Note that the User Script I created, Dave's Script, is second from the bottom, and the Finder script is at the very bottom. When I run Dave's Script, the Finder comes to the front. Then, within the Finder, when I run Dave's Finder Script, Script Editor comes to the front. Try this yourself.


Figure 2. The Script Menu with the addition of my test script from my User Scripts folder and my Finder

Script from my Applications/Finder/ folder.

Exploring the Dictionary

Now that you have a home for all your scripts, let's start exploring AppleScript itself. One place to start is with an application's dictionary. Each application's dictionary entry gives specific information about the classes and commands that the application supports.

Launch Script Editor. If it is not already open, open the Library window by selecting Library from the Window menu. Figure 3 shows my Script Editor library.


Figure 3. Script Editor's Library window.

Double-click on the Finder entry in the Library window. The window shown in Figure 4 will appear. There is a lot of information to digest in this window. Spend a few minutes opening the various disclosure triangles (I've opened some of them in Figure 4) and clicking on the various commands and classes in the left scrolling pane.

If you've ever done any pre-OS X Mac development, you've likely encountered the concept of Apple events. Want an app to quit? Send it a quit Apple event. Want an app to open or print a file? Send it an open or print Apple event. AppleScript is basically a sophisticated language you can use to control a scriptable application by sending it events and scripting the results.


Figure 4. The Finder's dictionary, showing the application class in the Finder Basics suite.

The most basic set of commands are organized into something called the Standard Suite. Most applications support the Standard Suite. The Standard Suite commands are close, count, data size, delete, duplicate, exists, make, move, open, print, quit, and select.

Many applications add their own sets of commands to the Standard Suite. For example, the Finder adds in a set of classes and commands called Finder Basics and another called Finder items. The main pain of Figure 4 shows the details of the application class in the Finder Basics suite. Notice that the list is divided into Elements and Properties. Elements are the objects contained in a class, while properties are more like preferences - unique within a class. Elements can be plural while a property is usually singular. A typical Finder element might be the list of items on the desktop. A typical Finder property might be the current selection.

Let's play with this a bit.

Create a new script and type in this code:

tell application "Finder"
	get home
end tell

When you run this script, Script Editor should display results in its Result pane. My results are shown in Figure 5. Notice that home is a Finder property containing the home directory. If you look towards the bottom of Figure 4, you'll see that it is also marked [r/o], meaning the property is read-only.


Figure 5. A simple Finder script, with the results shown in the Result pane.

Now edit the script like so:

tell application "Finder"
	get items of home
end tell

While the first script gave you the value of the home property, this script returns the list of items in the home folder. Here's the result I got when I ran this script:

{folder "Desktop" of folder "davemark" of folder "Users" of startup disk of 
   application "Finder", folder "Documents" of folder "davemark" of folder "Users" of startup 
   disk of application "Finder", folder "Library" of folder "davemark" of folder "Users" of 
   startup disk of application "Finder", folder "Magazines" of folder "davemark" of folder 
   "Users" of startup disk of application "Finder", folder "Movies" of folder "davemark" of 
   folder "Users" of startup disk of application "Finder", folder "Music" of folder "davemark" 
   of folder "Users" of startup disk of application "Finder", folder "Pictures" of folder 
   "davemark" of folder "Users" of startup disk of application "Finder", folder "Public" of 
   folder "davemark" of folder "Users" of startup disk of application "Finder", folder "Sites" 
   of folder "davemark" of folder "Users" of startup disk of application "Finder"}

As you can see, this is a comma-delimited list, wrapped in curly braces. This kind of result is typical in AppleScript. As you can see in the top of Figure 4, an item element can be specified "by numeric index, before/after another element, by name, as a range of elements, satisfying a test." For example, we can refer to item 3, as in this script:

tell application "Finder"
	get item 3 of home
end tell

As you might expect, here's the result of this script:

folder "Library" of folder "davemark" of folder 
   "Users" of startup disk of application "Finder"

Till Next Month...

There is a ton of cool stuff to play with here. In the Finder dictionary, look in the Finder items suite, at the item class to learn everything you could possibly want to know about items. For example, you'll see a bounds property, which describes the bounding rectangle of the specified item. You might extend the script above to:

tell application "Finder"
	get bounds of item 3 of home
end tell

You get the idea. The dictionary is an incredibly powerful tool for unlocking the mysteries of AppleScript. Play more. I'll be back next month with more fun stuff! J


Dave Mark is a long-time Mac developer and author and has written a number of books on Macintosh development, including Learn C on the Macintosh, Learn C++ on the Macintosh, and The Macintosh Programming Primer series. Be sure to check out Dave's web site at http://www.spiderworks.com.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

TextSoap 8.3.2 - Automate tedious text d...
TextSoap can automatically remove unwanted characters, fix up messed up carriage returns, and do pretty much anything else that we can think of to text. Save time and effort. Be more productive. Stop... Read more
Apple Remote Desktop 3.9 - Remotely cont...
Apple Remote Desktop is the best way to manage the Mac computers on your network. Distribute software, provide real-time online help to end users, create detailed software and hardware reports, and... Read more
Paragraphs 1.1.4 - Writing tool just for...
Paragraphs is an app just for writers. It was built for one thing and one thing only: writing. It gives you everything you need to create brilliant prose and does away with the rest. Features... Read more
Amazon Chime 4.0.5528 - Amazon-based com...
Amazon Chime is a communications service that transforms online meetings with a secure, easy-to-use application that you can trust. Amazon Chime works seamlessly across your devices so that you can... Read more
Apple Final Cut Pro X 10.3.2 - Professio...
Apple Final Cut Pro X is a professional video editing solution.Completely redesigned from the ground up, Final Cut Pro adds extraordinary speed, quality, and flexibility to every part of the post-... Read more
ForkLift 3.0 - Powerful file manager: FT...
ForkLift is a powerful file manager and ferociously fast FTP client clothed in a clean and versatile UI that offers the combination of absolute simplicity and raw power expected from a well-executed... Read more
VueScan 9.5.70 - 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
SoftRAID 5.5.6 - High-quality RAID manag...
SoftRAID allows you to create and manage disk arrays to increase performance and reliability. SoftRAID allows the user to create and manage RAID 4 and 5 volumes, RAID 1+0, and RAID 1 (Mirror) and... Read more
Sparkle 2.1.0 - $79.99
Sparkle will change your mind if you thought building websites wasn't for you. Sparkle is the intuitive site builder that lets you create sites for your online portfolio, team or band pages, or... Read more
Logic Pro X 10.3.1 - Music creation and...
Logic Pro X is the most advanced version of Logic ever. Sophisticated new tools for professional songwriting, editing, and mixing are built around a modern interface that's designed to get creative... Read more

Blasty Bubs is a colorful Pinball and Br...
QuickByte Games has another arcade treat in the works -- this time it's a mishmash of brick breaking and Pinball mechanics. It's called Blasty Bubs, and it's a top down brickbreaker that has you slinging balls around a board. [Read more] | Read more »
Corsola and Heracross are the new region...
Generation 2 finally launched in Pokémon GO, unleashing a brand new batch of Pokémon into the wild. Even before the update went live people were speculating on how to catch elusive Pokémon like the legendary "dogs", Unknown, and whether or not... | Read more »
The Warlock of Firetop Mountain (Games)
The Warlock of Firetop Mountain 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: An epic adventure through a mysterious mountain filled with monsters, magic and mayhem! “...it looks downright... | Read more »
Fantasy MMORPG MU Origin’s receives a hu...
Developer Webzen are looking to take their highly popular fantasy battler MU Origin to the next level this month, with its most ambitious overhaul yet. The latest update introduces the long sought after Server Arena, new treasure dungeons, and much... | Read more »
RPG Djinn Caster (Games)
RPG Djinn Caster 1.0.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.0 (iTunes) Description: SPECIAL PRICE 38% OFF(USD 7.99 -> USD 4.99)!!!A Fantasy Action RPG of far foreign lands! Summon the Djinns and rise to... | Read more »
Alto's Odyssey gets its first trail...
There's finally video evidence of Alto's Odyssey, the follow up to the 2015 App Store hit, Alto's Adventure. It looks just as soothing and atmospheric as Alto's last outing, but this time players will be journeying to the desert. Whereas Alto's... | Read more »
Last week on Pocket Gamer
What’s going on in the wider world of portable gaming? Each week we ask that question of our sister website Pocket Gamer. The PG team covers iOS gaming, just like 148Apps, but it also strays into the world of Android games and handheld consoles... | Read more »
Pokémon GO Generation 2 evolution guide
At long last, Niantic Labs finally unleashed the Generation 2 Pokémon into the wild. Pokémon GO trainers are scrambling to grab up this new set of 80 Pokémon. There are some special new tricks required to catch all of these new beasties, though.... | Read more »
The best new games we played this week
It feels as though the New Year got off to a creaking start as far as mobile games go, but that's changed over the past few weeks. The last few days alone have seen the debut of a number of wonderful games, so we thought we'd take the time to... | Read more »
Recruit more scallywags and discover new...
Get ready to show off your sea legs all over again in Oceans & Empires’ new grand update, which aims to make the act of rising to the role of seven seas ruler even more fresh and appealing, thanks to a richness of new content on both iOS and... | Read more »

Price Scanner via MacPrices.net

Apple restocks refurbished 2015 and 2016 13-i...
Apple has Certified Refurbished 2015 and 2016 13″ MacBook Airs available starting at $759. An Apple one-year warranty is included with each MacBook, and shipping is free: - 2016 13″ 1.6GHz/8GB/128GB... Read more
13-inch 2.5GHz MacBook Pro (Apple refurbished...
Apple has Certified Refurbished 13″ 2.5GHz MacBook Pros (MD101LL/A) available for $829, or $270 off original MSRP. Apple’s one-year warranty is standard, and shipping is free: - 13″ 2.5GHz MacBook... Read more
QuickerTek Announces 5TB Apple AC AirPort Tim...
QuickerTek Inc. has announced their new 5TB hard drive upgrade for Apple’s AC AirPort Time Capsule. By customer request, this upgrade also features six external antennas and offers the highest... Read more
Apple Certified Refurbished iMacs available f...
Apple has Certified Refurbished 2015 21″ & 27″ iMacs available for up to $350 off MSRP. Apple’s one-year warranty is standard, and shipping is free. The following models are available: - 21″ 3.... Read more
Apple offering Certified Refurbished Series 1...
Apple is now offering Certified Refurbished Series 1 and Series 2 Apple Watches for 14-16% off MSRP, starting at $229. An Apple one-year warranty is included with each watch. Shipping is free: Series... Read more
1.4GHz Mac mini on sale for $449, save $50
B&H Photo has the 1.4GHz Mac mini on sale for $50 off MSRP including free shipping plus NY sales tax only: - 1.4GHz Mac mini: $449 $50 off MSRP Read more
12-inch Retina MacBooks on sale for $200-$250...
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 2.0GHz Space Gray MacBook Pro on sale...
Adorama has the non-Touch Bar 13″ 2.0GHz Space Gray MacBook Pro in stock today for $100 off MSRP. Shipping is free, and Adorama charges NY & NJ sales tax only: - 13″ 2.0GHz MacBook Pro Space Gray... Read more
13-inch Touch Bar MacBook Pros on sale for $1...
B&H Photo has select 2016 Apple 13″ Touch Bar MacBook Pros in stock today and up to $100 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 13″ 2.9GHz/512GB Touch Bar MacBook... Read more
KSI-1802R SX Disinfect-able Keyboard With Wav...
KSI has unveiled a new, innovative medical keyboard, the KSI-1802R SX, at HIMSS 2017, running February 19-22 in Orlando, Florida. KSI-1802R SX is the only keyboard that combines dual factor... Read more

Jobs Board

*Apple* Retail - Multiple Positions - Apple,...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
Manager *Apple* Systems Administration - Pu...
Req ID 3315BR Position Title Manager, Apple Systems Administration Job Description The Manager of Apple Systems Administration oversees the administration and Read more
*Apple* Retail - Multiple Positions - Apple,...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
Manager *Apple* Systems Administration - Pu...
Req ID 3315BR Position Title Manager, Apple Systems Administration Job Description The Manager of Apple Systems Administration oversees the administration and Read more
*Apple* Technician - nfrastructure (United S...
Let’s Work Together Apple Technician This position is based in Portland, ME Life at nfrastructure At nfrastructure, we understand that our success results from our Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.