![]() ![]() There's no direct way to call this from bash or AppleScript. This is the only mechanism I know of that works for all OS's from 10.5 (actually 10.3) to 10.8 (but that doesn't mean it's the only one there actually is…). If you don't have a GUI session (e.g., because you're running in an ssh shell), or your session doesn't own the console (e.g., because someone has fast-user-switched you out), you won't be able to get this information, but you will at least be able to detect those cases. IIRC, on Lion, by default, neither one will ever lock the screen-but if you leave the screen asleep for longer than the time set in Security & Privacy, that will lock it.Īnyway, the API CGSessionCop圜urrentDictionary allows you to get information about both screen sleep and screen lock, for your GUI session. Depending on your other settings, this may also entail locking the screen, but that's a separate issue. Both Shift+Control+Eject and Energy Saver put the screens to sleep, which isn't the same thing as locking them. Listing 13-9 shows how the displayError handler might appear if it were written using the labeled parameter style.First, there's a bit of confusion in your question. Most often, it’s a style used for event handlers. For additional information about this style of handler, see Handlers with Interleaved Parameters in AppleScript Language Guide.ĪppleScript Handlers with Labeled ParametersĪppleScript also supports labeled parameters, although this style is rarely used when defining custom handlers. Objective-C to AppleScript Quick Translation Guide discusses interleaved parameter use in AppleScriptObjC scripts. Therefore, they are typically used to call Objective-C methods in AppleScriptObjC scripts. Interleaved parameters resemble Objective-C syntax. display dialog theErrorMessage buttons theButtons. ![]() on displayError:theErrorMessage withButtons:theButtons.Would you like to continue?" withButtons: tell me to displayError:"There's not enough available space.It also makes future script updates easier, as you can change behavior in one place to affect an entire script. This can be useful when troubleshooting you can narrow in on a single handler to resolve a problem, rather than sorting through a long, complex script. Handlers provide a way to organize your code by breaking it up into smaller, manageable, modular chunks. Handlers can optionally be written to receive information as input for processing ( parameters), and can return information as output ( result or return value). Each time you do, any code in the handler runs. You then call, or evoke, a handler whenever necessary by referring to it by name. You can name a handler whatever you like as long as the name contains no special characters, such as punctuation, or spaces, and isn’t a reserved language term. Instead of inserting the same code over and over, you write it once and give it a name. Handlers are generally written to perform a task multiple times throughout a script, such as displaying an alert, writing text to a file, or creating an email message. Throughout this document, these terms are used interchangeably. Collections of script statements that can be invoked by name are referred to as handlers in AppleScript, functions or methods in JavaScript, and subroutines in some other languages. ![]()
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