"stepSize" attribute is ignored in slider input dialogs using script editor

[lnyng]

In imagej/imagej-ui-swing#64

@imagejan mentioned that stepSize attribute is ignored, for example, when calling:

// @int(label="test", min="0", max="100", stepSize="10", style="slider") a
print(a)

Notice that there is another bug here, which is that min/max must be specified or it will hang the program.

After some investigation, it seems that this is due to some known bug as there is a "FIX ME" in the code.

I think the reason to this bug is that there is no converter that converts String to Number in Scijava right now. We could create such converter. But I don't understand why we want to use Number as the type for stepSize. If the input is an int, then max/min/stepSize should all be int, right? Same should apply to double long etc. Then we can just use item.getType as the type to parse the stepSize String given. @ctrueden

[ctrueden]

When I first designed the ModuleItem interface, stepSize was indeed typed on T. And there was some problem with it (I forgot the details), which I worked around by typing it on Number. It is probably not correct, but it's how things are for now. We could consider changing it for SciJava Common 3.0.0 I suppose.

Anyway, this issue is fixed in c0ffe39.