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Re: jumpstart me with the scripting bridge

Hey,

By way of an addendum, here's an interesting observation:

We are told that the following:

	[<ref> addObject: <class instance>]

is equal to:

	make new <class> at end of every <class> of <ref>

and any application that fails to understand this particular form is pretty much stuffed.

For example:

from ScriptingBridge import *
textedit = SBApplication.alloc().initWithBundleIdentifier_('com.apple.textedit')
newclass = textedit.classForScriptingClass_(u'document').alloc().init()
textedit.documents().addObject_(newclass)

yields:

AE2000 (981): Received an event:
------oo start of event oo------
{ 1 } 'aevt': core/crel (i386){
return id: 64946178 (0x3df0002)
transaction id: 0 (0x0)
interaction level: 112 (0x70)
reply required: 1 (0x1)
remote: 0 (0x0)
for recording: 0 (0x0)
reply port: 15375 (0x3c0f)
target:
{ 1 } 'psn ': 8 bytes {
{ 0x0, 0x68068 } (Python)
}
fEventSourcePSN: { 0x0,0x68068 } (Python)
optional attributes:
< empty record >
event data:
{ 1 } 'aevt': - 2 items {
key 'kocl' -
{ 1 } 'type': 4 bytes {
'docu'
}
key 'insh' - <--- insertion location = end of every document
{ 1 } 'insl': - 2 items {
key 'kobj' -
{ 1 } 'obj ': - 4 items {
key 'want' -
{ 1 } 'type': 4 bytes {
'docu'
}
key 'from' -
{ -1 } 'null': null descriptor
key 'form' -
{ 1 } 'enum': 4 bytes {
'indx'
}
key 'seld' -
{ 1 } 'abso': 4 bytes {
'all '
}
}
key 'kpos' -
{ 1 } 'enum': 4 bytes {
'end '
}
}
}
}
------oo end of event oo------

or, in plain AppleScript-ese:

tell application "TextEdit" to make new document at end of every document


However, if I say:

from ScriptingBridge import *
finder = SBApplication.alloc().initWithBundleIdentifier_('com.apple.finder')
newclass = finder.classForScriptingClass_(u'folder').alloc().init()
finder.folders().addObject_(newclass)

I get:

AE2000 (928): Received an event:
------oo start of event oo------
{ 1 } 'aevt':  core/crel (i386){
          return id: 70844416 (0x4390000)
     transaction id: 0 (0x0)
  interaction level: 112 (0x70)
     reply required: 1 (0x1)
             remote: 0 (0x0)
      for recording: 0 (0x0)
         reply port: 42803 (0xa733)
  target:
    { 1 } 'psn ':  8 bytes {
      { 0x0, 0x2 } (Finder)
    }
  fEventSourcePSN: { 0x0,0x2 } (Finder)
  optional attributes:
    < empty record >
  event data:
    { 1 } 'aevt':  - 2 items {
      key 'kocl' -
        { 1 } 'type':  4 bytes {
          'cfol'
        }
      key 'insh' -
        { -1 } 'null':  null descriptor
    }
}
------oo  end of event  oo------

along with a new folder on my desktop; which is actually a bit ironic as if I try to say:

	tell application "Finder" to make new folder at end of every folder

then I get a Finder error as it expects an object specifier, not an insertion location, for the 'make' command's 'at' parameter... something which pretty much every AppleScripter already knows, of course.

So it looks as if Apple already knew that -addObject:'s approach was defective because it broke on *Finder*, no less, and had to hardcode a special, Finder-specific exception into Scripting Bridge to avoid embarrassing themselves.


has
--
http://appscript.sourceforge.net
http://rb-appscript.rubyforge.org

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