| Re: iTool identifiers [message #48947] |
Wed, 07 June 2006 20:58  |
Michael Galloy
Messages: 1114
Registered: April 2006
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Senior Member |
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Chris Torrence wrote:
> Actually, I think it *is* that easy:
>
> IDL> o=obj_new('idlitcomponent', identifier='myobject')
> IDL> oparent = obj_new('idlitcontainer', identifier='parent')
>
> IDL> ograndparent = obj_new('idlitcontainer')
>
> IDL> oparent->add, o
>
> IDL> ograndparent->add, oparent
>
> IDL> print, o->getfullidentifier()
>
> /PARENT/MYOBJECT
>
> IDL> help, ograndparent->getbyidentifier('/parent/myobject')
>
> <Expression> OBJREF = <ObjHeapVar10(IDLITCOMPONENT)>
>
> The key is to set the IDENTIFIER keyword when you create your objects. As
> long as your objects are a subclass of IDLitComponent, and your containers
> are IDLitContainer, then everything should just work, and you shouldn't need
> any of the iTools framework.
>
> -Chris
>
> ITT Visual Information Solutions
Cool. And IDLitContainer::findIdentifiers has a nice searching capability.
Mike
--
www.michaelgalloy.com
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| Re: iTool identifiers [message #48949 is a reply to message #48947] |
Wed, 07 June 2006 16:46  |
Chris[2]
Messages: 39
Registered: August 2003
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Member |
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Actually, I think it *is* that easy:
IDL> o=obj_new('idlitcomponent', identifier='myobject')
IDL> oparent = obj_new('idlitcontainer', identifier='parent')
IDL> ograndparent = obj_new('idlitcontainer')
IDL> oparent->add, o
IDL> ograndparent->add, oparent
IDL> print, o->getfullidentifier()
/PARENT/MYOBJECT
IDL> help, ograndparent->getbyidentifier('/parent/myobject')
<Expression> OBJREF = <ObjHeapVar10(IDLITCOMPONENT)>
The key is to set the IDENTIFIER keyword when you create your objects. As
long as your objects are a subclass of IDLitComponent, and your containers
are IDLitContainer, then everything should just work, and you shouldn't need
any of the iTools framework.
-Chris
ITT Visual Information Solutions
"Michael Galloy" <mgalloy@gmail.com> wrote in message
news:3wvhg.10064$921.7004@newsread4.news.pas.earthlink.net.. .
> Robbie wrote:
>> Hello,
>>
>> I was wondering if anyone has used the iTool identifier system just by
>> itself. I like the idea of using the iTool identifier system for
>> keeping a track of objects, but I am not using iTools for my particular
>> project.
>>
>> By the looks of it, I just have to:
>> * Use IDLitContainer instead of IDL_Container
>> * Use IDLitComponent as a base class
>> * No change necessary for graphics atoms
>> and I should be able to reference all objects from the context of the
>> root IDL_Container
>>
>> Is it really that easy? Is it more convenient than using conventional
>> object references? Does a global identifier system blur the segregation
>> between modules?
>
> I don't think it will be *that* easy.
>
> IDL> o = obj_new('idlgrplot', findgen(11))
> IDL> print, obj_isa(o, 'idlitcomponent')
> 1
> IDL> help, o->getFullIdentifier()
> <Expression> STRING = ''
>
> I think you need to start the iTools system and have an iTool for most
> components to have a valid identifier (since I think the component gets
> its id when it is registered). Maybe there is some way to fake it? To find
> out would require digging around the iTools source code.
>
> But, maybe the NAME property for object graphics is good enough?
>
> IDL> oview = obj_new('idlgrview')
> IDL> omodel = obj_new('idlgrmodel', name='mymodel')
> IDL> oview->add, omodel
> IDL> oplot = obj_new('idlgrplot', findgen(11), name='myplot')
> IDL> omodel->add, oplot
> IDL> help, oview->getByName('mymodel/myplot')
> <Expression> OBJREF = <ObjHeapVar10(IDLGRPLOT)>
>
> I use this all the time so that I don't have to store object references
> for many different objects in a hierarchy. Is this what you mean by "I
> should be able to reference all objects from the context of the root
> IDL_Container"?
>
> Mike
> --
> www.michaelgalloy.com
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| Re: iTool identifiers [message #48964 is a reply to message #48949] |
Wed, 07 June 2006 00:47 |
Michael Galloy
Messages: 1114
Registered: April 2006
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Senior Member |
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Robbie wrote:
> Hello,
>
> I was wondering if anyone has used the iTool identifier system just by
> itself. I like the idea of using the iTool identifier system for
> keeping a track of objects, but I am not using iTools for my particular
> project.
>
> By the looks of it, I just have to:
> * Use IDLitContainer instead of IDL_Container
> * Use IDLitComponent as a base class
> * No change necessary for graphics atoms
> and I should be able to reference all objects from the context of the
> root IDL_Container
>
> Is it really that easy? Is it more convenient than using conventional
> object references? Does a global identifier system blur the segregation
> between modules?
I don't think it will be *that* easy.
IDL> o = obj_new('idlgrplot', findgen(11))
IDL> print, obj_isa(o, 'idlitcomponent')
1
IDL> help, o->getFullIdentifier()
<Expression> STRING = ''
I think you need to start the iTools system and have an iTool for most
components to have a valid identifier (since I think the component gets
its id when it is registered). Maybe there is some way to fake it? To
find out would require digging around the iTools source code.
But, maybe the NAME property for object graphics is good enough?
IDL> oview = obj_new('idlgrview')
IDL> omodel = obj_new('idlgrmodel', name='mymodel')
IDL> oview->add, omodel
IDL> oplot = obj_new('idlgrplot', findgen(11), name='myplot')
IDL> omodel->add, oplot
IDL> help, oview->getByName('mymodel/myplot')
<Expression> OBJREF = <ObjHeapVar10(IDLGRPLOT)>
I use this all the time so that I don't have to store object references
for many different objects in a hierarchy. Is this what you mean by "I
should be able to reference all objects from the context of the root
IDL_Container"?
Mike
--
www.michaelgalloy.com
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| Re: iTool identifiers [message #49059 is a reply to message #48947] |
Tue, 13 June 2006 23:13 |
Robbie
Messages: 165
Registered: February 2006
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Senior Member |
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It's a pity IDLitContainer::findIdentifiers doesn't search through the
object graphics tree. I've been trying to find neat ways of creating
and maintaining an object graphics tree.
I'm in the process of writing a class to create graphics objects using
methods which are a bit like tv and plot.
http://www.barnett.id.au/idl/
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