/** Initialize and instantiate the delegate editor class. */
public AttributeEditorInfo init(
BindableDescriptor bindable,
AttributeDescriptor descriptor,
IAttributeEventProvider eventProvider,
Map<String, Object> defaultValues) {
final boolean floatingPointType =
descriptor.type.equals(Double.class) || descriptor.type.equals(Float.class);
final boolean unbounded;
final boolean hasNegativeValues;
if (floatingPointType) {
final DoubleRange r = NumberUtils.getDoubleRange(descriptor);
hasNegativeValues = (r == null || r.min() < 0);
unbounded = (r == null || NumberUtils.isUnbounded(r));
} else {
final IntRange r = NumberUtils.getIntRange(descriptor);
hasNegativeValues = (r == null || r.min() < 0);
unbounded = (r == null || NumberUtils.isUnbounded(r));
}
final IAttributeEditor delegate;
if (unbounded) {
/*
* If the range is unbounded or contains negative values, use unbounded
* numeric editor (simple text box). Such unconstrained public attributes
* shouldn't be common anyway.
*/
if (floatingPointType) {
delegate = new UnboundedDoubleEditor();
} else {
if (!hasNegativeValues) {
delegate = new IntegerRangeEditor();
} else {
delegate = new UnboundedIntegerEditor();
}
}
} else if (hasNegativeValues) {
/*
* If the range covers negative values, or if the range is too big to fit in
* the integer range, use unbounded double editor. TODO: Negative
* scale/sliders are available in Eclipse 3.4M5:
* https://bugs.eclipse.org/bugs/show_bug.cgi?id=91317
*/
if (floatingPointType) {
delegate = new UnboundedDoubleEditor();
} else {
delegate = new UnboundedIntegerEditor();
}
} else {
/*
* The range exists, is bounded and contains only non-negative values, use
* slider/scale directly.
*/
if (floatingPointType) {
delegate = new DoubleRangeEditor();
} else {
delegate = new IntegerRangeEditor();
}
}
this.delegate = delegate;
return delegate.init(bindable, descriptor, eventProvider, defaultValues);
}
