April 2009 - MacRuby-devel - lists.macosforge.org

[hotcocoa] MVC helper?
by Matt Aimonetti 21 Apr '09

21 Apr '09

I recently worked on a proof of concept with HotCocoa. I wanted to see how easy it would be to stay in pure Ruby and still use a MVC type approach. I put together the beginning of a sample app to see how it would work in real life: http://github.com/mattetti/phare/ I first wanted to make sure to separate the controller code and the view code. I also wanted to avoid use class variables to deal with my views. There isn't much there but you can see how I organized the various parts of my app: http://github.com/mattetti/phare/tree/2d8d06ceefcfced5040bbe99fdea9b892a0db… lib/controllers lib/views lib/vendor (string.rb extends String, logger.rb will eventually let you log at different debugging levels, mvc.rb takes care of loading the various files) Views just need to respond to render and have a description if you want to use the segmented controller helper. Anyways, as I said there isn't much, it's lacking the entire testing part of the app and the code could definitively be cleaned up/optimized. I just want to know if that's something others are interested in, or if you prefer to 1. come up with your own solution every time 2. don't bother with mvc 3. use xcode/ib - Matt

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How to retrieve an observer's context?
by Edward Hynes 21 Apr '09

21 Apr '09

I'd like to use contexts when registering some observers, but have been unable to retrieve them, getting a "can't convert C/Objective-C value `0x2822731' of type `v' to Ruby object" instead. The following code, for example, will trigger the error class Subject attr_accessor :abc end class Observer def observeValueForKeyPath keyPath, ofObject:object, change:change, context:context context[0] end end subject = Subject.new observer = Observer.new subject.addObserver observer, forKeyPath:'abc', options:0, context:'a context' subject.setAbc 'some value' Is there a way to retrieve an observation context? Or is there an alternative way for observers to distinguish among multiple registrations for a given object/keyPath? Thanks, Ed

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Using built-in ruby libraries in packaged applications.
by Alex Vollmer 21 Apr '09

21 Apr '09

I have a bit of code that uses the Ruby base64 library and I would like to package the MacRuby framework into my application. I've added the "Embed MacRuby" target to my build and the MacRuby framework shows up properly in my application's contents directory. The problem is that when the program launches the call for requiring the base64.rb file causes the runtime to bomb out saying it couldn't find 'base64.rb'. After a bit of hacking I ended up adding this stanza in the rb_main.rb file prior to the loop that requires all the local files: $:.unshift(File.join(NSBundle.mainBundle.privateFrameworksPath, "MacRuby.framework", "Versions", "Current", "usr/lib/ruby/1.9.1")) This seems a little hacky to me. Is there a better way of doing this? Thanks, Alex V. ---- Musings & Notes — http://alexvollmer.com Track what you lend and borrow — http://moochbot.com

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Re: [MacRuby-devel] Macrake is building/launching the wrong application
by Frisco Del Rosario 20 Apr '09

20 Apr '09

Me: >> I relaunched Demo.app with a doubleclick, but instead of the >> Demo.app launching, HotConsole launched. >> >> I quit, trashed the Demo.app, ran the rakefile again, but Demo.app >> continues to launch as HotConsole. Laurent: > I wasn't able to reproduce this strange issue... if you can still do > it could you archive the directory and send it to us? My fault. I altered the directory path to Developer/Examples/Ruby/ MacRuby/HotCocoa/demo, which caused the muck. Restoring the directory path fixed it. (And changing the path in the same fashion caused the problem to recur, so I know not to do that again.) Thank you.

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Macrake is building/launching the wrong application
by Frisco Del Rosario 20 Apr '09

20 Apr '09

I used macrake to build Demo.app in Developers/Examples/Ruby/MacRuby/ HotCocoa/demo. After a while, the beachball (it's not a "beachball" anymore; what do people call the spinning thing that says your app is hung?) spun, and I Force Quit the demo. I relaunched Demo.app with a doubleclick, but instead of the Demo.app launching, HotConsole launched. I quit, trashed the Demo.app, ran the rakefile again, but Demo.app continues to launch as HotConsole.

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The "right" way to use gems
by Alex Vollmer 18 Apr '09

18 Apr '09

One question I have is what the proper expectations are for using Ruby gems within a Macruby application. For example, I wanted to use the HTTParty gem for some web service processing since it provides a nice, succinct interface. However the gem won't load in MacRuby because of an issue with REXML (I can provide details if necessary). The gem works in 1.9 YARV, so my guess is that it's some difference in the Ruby REXML classes between MacRuby 0.4 and YARV. Is the "right" way to do things is to use NSURL and not bother with gems, or should I file bugs about the issue with REXML? I know there's a ton of effort going into getting 0.5 out the door, so if the primary goal of MacRuby is to provide a Ruby language interface to the Obj-C runtime, fixing defects in the porting effort from YARV may be of secondary concern. If it's considered good-form to use gems, then what's the right way to package gems in an application? The only way I could get it working was to manipulate the gem_path in the rb_main.rb to point to a local gems installation (think like vendor/gems in a rails project). Cheers, Alex V. ---- Musings & Notes — http://alexvollmer.com Track what you lend and borrow — http://moochbot.com

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Questions about Threads
by Alex Vollmer 18 Apr '09

18 Apr '09

Hi folks, Could someone shed a little light on how threads work in MacRuby? For example, if I do this: Thread.new do 10.times do puts "Hi" sleep 2 end end Does this run as a NSThread instance? Also does the MacRuby runtime have the Global Interpreter Lock or are MacRuby threads basically NSThreads? Thanks! --Alex V. ---- Musings & Notes — http://alexvollmer.com Track what you lend and borrow — http://moochbot.com

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Mixing Objective-C and Ruby classes
by macruby-devel＠principia.info 18 Apr '09

18 Apr '09

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strings to yaml
by John Shea 17 Apr '09

17 Apr '09

Hello everyone, I notice that NSMutableString nicely turns into a plain string when you #to_yaml it. Thats great since plays nicely with other ruby code. NSString however becomes "!str:NSString" - is that by design? It would not matter to me except that #stringValue from NSTextFields returns NSString - which i must first copy to a NSMutableString before I #to_yaml it. Just wondering if there is a more elegant way. Cheers, John

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How to use Accessibility API?
by Benjamin Mollenhauer 16 Apr '09

16 Apr '09

Hi, i tried unsuccessfuly to use functions like "AXUIElementCopyAttributeValue" from the Accessibility API. > /System/Library/Frameworks/ApplicationServices.framework/‍ > Frameworks/HIServices.framework/ If I include "framework 'ApplicationServices' it seems, that I have no access to these functions. I read http://www.macruby.org/trac/wiki/MacRubyTutorial and stumbeld upon Accessing Static APIs and some thing called gen_bridge_metadata. My efforts with this tool resulted in some compiler errors. Third option would be to make some Obj-C wrapper. Which is the right way to go?

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