org.nasdanika.html.model.app.util.LabelBuilder Maven / Gradle / Ivy
package org.nasdanika.html.model.app.util;
import java.util.Collection;
import java.util.List;
import java.util.function.BiConsumer;
import java.util.function.Consumer;
import org.nasdanika.common.Composable;
import org.nasdanika.common.CompoundExecutionParticipant;
import org.nasdanika.common.ExecutionParticipant;
import org.nasdanika.common.FilterExecutionParticipant;
import org.nasdanika.common.ProgressMonitor;
import org.nasdanika.html.model.app.Label;
import org.nasdanika.html.model.app.util.LabelProvider.Resolver;
/**
* Adapter interface for creating {@link Label}'s and Label subclasses.
* @author Pavel
*
*/
public interface LabelBuilder extends ExecutionParticipant, Composable {
Label build(Label label, Consumer resolverCollector, ProgressMonitor progressMonitor);
default Label splitAndBuild(Label label, Consumer resolverCollector, ProgressMonitor progressMonitor) {
try (ProgressMonitor subMonitor = split(progressMonitor, "Building" + name())) {
return build(label, resolverCollector, subMonitor);
}
}
@Override
default LabelBuilder compose(LabelBuilder other) {
if (other == null) {
return this;
}
List labelBuilders = List.of(this, other);
class CompoundLabelBuilder extends CompoundExecutionParticipant implements LabelBuilder {
protected CompoundLabelBuilder(String name, boolean reverseCommitClose) {
super(name, reverseCommitClose);
}
@Override
public Label build(Label label, Consumer resolverCollector, ProgressMonitor progressMonitor) {
for (LabelBuilder element: getElements()) {
if (element != null) {
label = element.splitAndBuild(label, resolverCollector, progressMonitor);
}
}
return label;
}
@Override
protected Collection getElements() {
return labelBuilders;
}
}
return new CompoundLabelBuilder("Composite label builder", false);
}
/**
* Wraps this builder into a provider
* @param identity Initial label, can be null
* @return {@link LabelProvider} delegating to this builder
*/
default LabelProvider asProvider(Label identity, Iterable registryKeys) {
class DelegatingLabelProvider extends FilterExecutionParticipant implements LabelProvider {
public DelegatingLabelProvider() {
super(LabelBuilder.this);
}
@Override
public Label create(BiConsumer registry, Consumer resolverCollector, ProgressMonitor progressMonitor) {
Label label = target.build(identity, resolverCollector, progressMonitor);
if (registry != null && label != null && registryKeys != null) {
for (Object registryKey: registryKeys) {
registry.accept(registryKey, label);
}
}
return label;
}
}
return new DelegatingLabelProvider();
}
}