58 lines
1.6 KiB
Java
58 lines
1.6 KiB
Java
package envoy.client.ui.listcell;
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import java.util.function.Function;
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import javafx.scene.Node;
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import javafx.scene.control.ListCell;
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import javafx.scene.control.ListView;
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import javafx.util.Callback;
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/**
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* Provides a creation mechanism for generic list cells given a list view and a
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* conversion function.
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* <p>
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* Project: <strong>envoy-client</strong><br>
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* File: <strong>ListCellFactory.java</strong><br>
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* Created: <strong>13.07.2020</strong><br>
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*
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* @author Kai S. K. Engelbart
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* @param <T> the type of object to display
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* @since Envoy Client v0.1-beta
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*/
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public final class ListCellFactory<T> implements Callback<ListView<T>, ListCell<T>> {
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private final class GenericListCell extends ListCell<T> {
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private ListView<? extends T> listView;
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private GenericListCell(ListView<? extends T> listView) {
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this.listView = listView;
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getStyleClass().add("listElement");
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}
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@Override
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protected void updateItem(T item, boolean empty) {
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super.updateItem(item, empty);
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if (empty || item == null) {
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setText(null);
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setGraphic(null);
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} else {
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final var control = converter.apply(item);
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prefWidthProperty().bind(listView.widthProperty().subtract(40));
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setGraphic(control);
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}
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}
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}
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private final Function<? super T, ? extends Node> converter;
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/**
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* @param converter a function converting the type to display into a node
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* @since Envoy Client v0.1-beta
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*/
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public ListCellFactory(Function<? super T, ? extends Node> converter) { this.converter = converter; }
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@Override
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public ListCell<T> call(ListView<T> listView) { return new GenericListCell(listView); }
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}
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