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Visitor.java
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Visitor.java
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package org.genericsystem.reactor;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import javafx.beans.binding.Bindings;
import javafx.beans.property.Property;
import javafx.beans.value.ObservableValue;
import org.genericsystem.common.Generic;
import org.genericsystem.reactor.Model.TriFunction;
import org.genericsystem.reactor.model.GenericModel;
public class Visitor {
public void visit(Model modelContext) {
prefix(modelContext);
for (Model childContext : modelContext.subContexts())
visit(childContext);
postfix(modelContext);
}
public void prefix(Model modelContext) {
}
public void postfix(Model modelContext) {
}
public static class HolderVisitor extends Visitor {
private Generic newInstance;
@Override
public void prefix(Model model) {
GenericModel gModel = (GenericModel) model;
for (Map<String, ObservableValue<Object>> tagPropertiesMap : model.getPropertiesMaps()) {
if (tagPropertiesMap.containsKey(ReactorStatics.VALUE) && tagPropertiesMap.containsKey(ReactorStatics.ACTION)
&& tagPropertiesMap.get(ReactorStatics.VALUE).getValue() != null && tagPropertiesMap.get(ReactorStatics.ACTION).getValue() != null) {
TriFunction<Generic[], Serializable, Generic, Generic> action = (TriFunction<Generic[], Serializable, Generic, Generic>) tagPropertiesMap
.get(ReactorStatics.ACTION).getValue();
Generic g = action.apply(gModel.getGenerics(), (Serializable) tagPropertiesMap.get(ReactorStatics.VALUE).getValue(), newInstance);
if (newInstance == null)
newInstance = g;
}
}
}
@Override
public void postfix(Model model) {
List<Generic> generics = new ArrayList<>();
for (Model subModel : model.subContexts())
for (Tag tag : subModel.getProperties().keySet())
if (subModel.containsProperty(tag, ReactorStatics.SELECTION))
if (subModel.getProperty(tag, ReactorStatics.SELECTION).getValue() != null)
generics.add(((GenericModel) subModel.getProperty(tag, ReactorStatics.SELECTION).getValue()).getGeneric());
if (!generics.isEmpty() && generics.size() + 1 == ((GenericModel) model).getGeneric().getComponents().size()) // test OK?
newInstance.setHolder(((GenericModel) model).getGeneric(), null, generics.stream().toArray(Generic[]::new));
}
}
public static class ClearVisitor extends Visitor {
@Override
public void prefix(Model model) {
for (Map<String, ObservableValue<Object>> properties : model.getPropertiesMaps()) {
if (properties.containsKey(ReactorStatics.VALUE))
((Property) properties.get(ReactorStatics.VALUE)).setValue(null);
if (properties.containsKey(ReactorStatics.SELECTION))
((Property) properties.get(ReactorStatics.SELECTION)).setValue(null);
}
}
}
public static class CheckInputsValidityVisitor extends Visitor {
private final List<ObservableValue> propertiesInvalid = new ArrayList<>();
private final ObservableValue<Boolean> invalid;
public CheckInputsValidityVisitor(Model modelContext) {
super();
visit(modelContext);
invalid = Bindings.createBooleanBinding(() -> propertiesInvalid.stream().map(input -> (Boolean) input.getValue()).filter(bool -> bool != null)
.reduce(false, (a, b) -> a || b), propertiesInvalid.stream().toArray(ObservableValue[]::new));
}
public ObservableValue<Boolean> isInvalid() {
return invalid;
}
@Override
public void prefix(Model model) {
propertiesInvalid.addAll(model.getPropertiesMaps().stream().filter(properties -> properties.containsKey(ReactorStatics.INVALID))
.map(properties -> properties.get(ReactorStatics.INVALID)).collect(Collectors.toList()));
}
}
}