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ObservableModelSelector.java
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ObservableModelSelector.java
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package org.genericsystem.reactor.model;
import org.genericsystem.reactor.modelproperties.SelectionDefaults;
import java.util.function.BiFunction;
import org.genericsystem.common.Generic;
import org.genericsystem.defaults.tools.BindingsTools;
import org.genericsystem.reactor.Context;
import org.genericsystem.reactor.Tag;
import javafx.beans.binding.Bindings;
import javafx.beans.value.ObservableValue;
import javafx.collections.ObservableList;
public interface ObservableModelSelector extends BiFunction<Context, Tag, ObservableValue<Context>> {
public static class SELECTION_SELECTOR implements ObservableModelSelector {
@Override
public ObservableValue<Context> apply(Context context, Tag tag) {
if (SelectionDefaults.class.isAssignableFrom(tag.getClass()))
return ((SelectionDefaults) tag).getSelectionProperty(context);
else
throw new IllegalStateException("SELECTION_SELECTOR is applicable only to tags implementing SelectionDefaults.");
}
}
public static class REMOVABLE_HOLDER_SELECTOR implements ObservableModelSelector {
@Override
public ObservableValue<Context> apply(Context context, Tag tag) {
ObservableList<Generic> holders = ObservableListExtractor.HOLDERS.apply(context.getParent().getGenerics());
return BindingsTools.transmitSuccessiveInvalidations(Bindings
.createObjectBinding(() -> (!context.getParent().getGeneric().isRequiredConstraintEnabled(context.getGeneric().getComponents().indexOf(context.getGenerics()[2])) && holders.size() == 1) || holders.size() > 1 ? context : null, holders));
}
}
public static class HOLDER_ADDITION_ENABLED_SELECTOR implements ObservableModelSelector {
@Override
public ObservableValue<Context> apply(Context context, Tag tag) {
ObservableList<Generic> holders = ObservableListExtractor.HOLDERS.apply(context.getGenerics());
return Bindings.createObjectBinding(() -> holders.isEmpty()
|| (!(context.getGeneric().getComponents().size() == 1 && context.getGeneric().isPropertyConstraintEnabled()) && !context.getGeneric().isSingularConstraintEnabled(context.getGeneric().getComponents().indexOf(context.getGenerics()[2])))
? context : null,
holders);
}
}
}