Bug 167450 [DataBinding] Get rid of bind support factory magic
I finally realized that we don't need that other magic factory. I'll move fillBindSpecDefaults() and the methods it calls (createConverter, createValidator etc) to a new class DefaultBindSpec. Clients who want default validators and converters created for them just create a DefaultBindSpec as opposed to a (rather empty) BindSpec. I will also move the early type checking into DefaultBindSpec to make it optional as well.
bundles/org.eclipse.core.databinding/src/org/eclipse/core/internal/databinding/ListBinding.java
}
			updating = true;
			try {
				
				
				ListDiff setDiff = (ListDiff) e.diff;
				ListDiffEntry[] differences = setDiff.getDifferences();
				for (int i = 0; i < differences.length; i++) {
					ListDiffEntry entry = differences[i];
					if (entry.isAddition()) {
						targetList.add(entry.getPosition(), entry.getElement());
					} else {
						targetList.remove(entry.getPosition());
					}
				}
				e.pipelinePosition = BindingEvent.PIPELINE_AFTER_CHANGE;
				if (failure(errMsg(fireBindingEvent(e)))) {
					return;
				}
			} finally {
				updating = false;
			}
		}
	};
	private WritableValue partialValidationErrorObservable;
	private WritableValue validationErrorObservable;
	private IStatus errMsg(IStatus validationStatus) {
		partialValidationErrorObservable.setValue(null);
		validationErrorObservable.setValue(validationStatus);
		return validationStatus;