[MacRuby-devel] My class's initialize not called

[Matt Aimonetti]

Sorry I replied too quickly and didn't read properly.

Overwriting the init method of a Cocoa class subclass is not recommended.
Here is an example of what I was suggesting:

http://github.com/mattetti/phileas_frog/blob/master/image_layer.rb#L44

Which then get called there:
http://github.com/mattetti/phileas_frog/blob/master/game_controller.rb#L57

In any cases, you still need to call init (or super if you overwrite
initialize) and you need to return self.

I hope that helps.

- Matt


On Thu, Jan 21, 2010 at 4:09 PM, steve ross <cwdinfo at gmail.com> wrote:

> So, this class doesn't reopen a Cocoa class, it subclasses it. Same anyhow?
> The real problem is that the class is instantiated as a side effect of nib
> loading, and the only place I've been able to successfully set initial state
> is awakeFromNib. I either can't, or don't know how to make the nib load
> process call a DuplicateCounterTextField.initWithSomeCoolState method. My
> impression is that awakeFromNib is a poor place for setting initial state
> because the order in which awakeFromNib's are called is undefined (or is
> it?). Not to overcomplicate things, but the controller needs to be able to
> tweak the state of the control -- for example, to change the splitter regex.
>
> Thanks for helping out here.
>
> Steve
>
> On Jan 21, 2010, at 3:25 PM, Matt Aimonetti wrote:
>
> When reopening a Cocoa class, you should not overwrite initialize and if
> you were to do it anyway, don't forget to call super and to return self.
> The Cocoa way is to create your own initializer to end up with something
> like DuplicateCounterTextField.alloc.initWithDuplicate
>
> Also, remember that when initializing a Cocoa class, you need to do
> DuplicateCounterTextField.alloc.init
>
> - Matt
>
>
> On Thu, Jan 21, 2010 at 3:20 PM, steve ross <cwdinfo at gmail.com> wrote:
>
>> I'm sure this is an elementary question, but I have the class below. In
>> IB, I set several NSTextField controls to this class. Everything works in
>> the blah, blah, blah part, but strangely enough the
>>
>> puts "initialize dctf"
>>
>> never seems to be called. Any thoughts as to why?
>>
>> require 'strings'
>>
>> class DuplicateCounterTextField < NSTextField
>>  include Strings
>>
>>  attr_accessor :splitter, :completions
>>  attr_accessor :wordCount, :duplicateCount
>>
>>  def initialize
>>    puts "initialize dctf"
>>    @splitter = /\W+/
>>    @wordCount = 0
>>    @cachedWordCount = 0
>>    @duplicateCount = 0
>>  end
>>
>>  # blah, blah, blah working code
>>
>>  def textDidChange(notification)
>>    words = stringValue.split(@splitter)
>>    @wordCount = words.length
>>    @duplicateCount = @wordCount - words.uniq.length
>>
>>    if
>> delegate.respond_to?('controlCountDidChange:wordCount:duplicateCount:')
>>      delegate.controlCountDidChange(self,
>>                                   wordCount:@wordCount,
>>                              duplicateCount:@duplicateCount)
>>    end
>>  end
>>
>>  # etc.
>> end
>> _______________________________________________
>> MacRuby-devel mailing list
>> MacRuby-devel at lists.macosforge.org
>> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
>>
>
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