> Hi.
>
>> Here's a little code to make you an idea about using qx.Class.getByName.
>>
>> qx.Class.define("Bacon", {
>> extend: qx.core.Object,
>> construct: function(foo, bar) {
>> this.foo = foo;
>> this.bar = bar;
>> }
>> });
>>
>> var klass = qx.Class.getByName("Bacon");
>> var obj = new klass("foo", "bar");
>> this.debug(obj.foo);
>
> IIRC, you also have to have something like #require("Bacon") or such in
> the file where you want to instantiate Bacon objects, if you only
> instantiate Bacon objects by name. Otherwise the build process won't know
> to include the Bacon class in the generated script.
It really depends. What you address is the case where you have a normal
qooxdoo class (i.e. a class statically defined in its own file within a
library), and then you use the qx.Class.getByName() call in some arbitrary
other class. Then, yes, using a #require hint is one of the means to
ensure the Bacon class will actually be included in the build, and is
available at run time.
But the code example seems to indicate a different situation. As the call
to qx.Class.define() is just a normal function call, you can use it
basically anywhere in the code to create classes on the fly. Not the
recommended way to do that, but sometimes handy (The framework unit test
code uses this a lot, see e.g. qx.test.core.Variants). But classes created
on the fly this way are not known to the generator (there is no deep
inspection for calls to qx.Class.define and the like), so it's also no use
to mention them in a #require hint (the generator wouldn't recognize them
there either).
One more thing: After the call returns, you know the class you passed as
argument is available for normal use, so you don't even have to resort to
qx.Class.getByName(), you can use the class name directly:
qx.Class.define("Bacon", ...);
var bacon = new Bacon("foo", "bar");
So .getByName() is really only necessary if you cannot write down the name
of the class at coding time, but is a dynamic value at run time.
T.
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