[lively-kernel] finding a class
m.roeder at photon-software.de
Tue May 13 11:09:54 CEST 2014
As Tim said, TodoItemProto is not a class but a (prototypical) object that is cloned (.copy()) everytime you create a new TodoItem using the + button.
How can you find it? Usually [morph].show() will highlight the morph in the work showing red corners. If you do it for this example (this.get('TodoItemProto').show() in the Object Editor), you will see that it must be hidden behind the Progress Bar somewhere.
Digging further into it by inspecting the morphs and submorphs of the Todo Item Tool, you will find the TodoItemProto as a submorph of the TodoList container (not the window though). It is not visible so it will not be affected by the horizontal layout and you cannot see it.
How can you find that out programmatically? From the Object Editor, print or inspect this.get('TodoItemProto').owner. :-)
On 13 May 2014, at 07:36, Tim Felgentreff <timfelgentreff at gmail.com> wrote:
> The TodoItemProto in this example isn't a class. It's the name of a morph somewhere in the world. Finding it's class won't be useful.
> From: Carlos Crosetti
> Sent: 13/05/2014 01:55
> To: lively-kernel at hpi.uni-potsdam.de
> Subject: Re: [lively-kernel] finding a class
> Thanks Lars, the programmatic method you explained is very useful. However I was interested in a manual method to find a class. either in the System Code Browser or thru the world menu
> On 05/12/2014 03:31 PM, Lars wrote:
>> Hello Carlos,
>> in oder to get to the TodoItemProto class, just ask the morph for its constructor. When printed, that gives you the class' name. If you want to know where the class is from, ask the constructor for it's source module:
>> var klass = this.get("TodoItemProto").constructor
>> var source = this.get("TodoItemProto").constructor.sourceModule
>> Methods defined using the lively class scheme have an attribute "declaredClass" which contains a string which should yield the class object upon evaluation.
>> On 12 May 2014 11:08, <carlos.crosetti at afilha.com.ar> wrote:
>> Hi, I am familiar with Smalltalk and teaching myself the Lively Kernel. While browsing the TodoList via object editor I sea fragment of code like this
>> var item = this.get("TodoItemProto").copy();
>> How do I find the TodoItemProto class? Is there a way to select the class name from a method and jump to the class browser open in that target class?
>> Regards, Carlos
>> lively-kernel mailing list
>> lively-kernel at hpi.uni-potsdam.de
> lively-kernel mailing list
> lively-kernel at hpi.uni-potsdam.de
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the lively-kernel