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package ensemble.samples.controls.buttons;

import ensemble.Sample;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.scene.control.Label;
import javafx.scene.control.Toggle;
import javafx.scene.control.ToggleButton;
import javafx.scene.control.ToggleGroup;
import javafx.scene.layout.GridPane;

/**
 * Toggle buttons in a toggle group.
 *
 * @see javafx.scene.control.ToggleButton
 * @related controls/ChoiceBox
 * @related controls/Accordion
 * @related controls/toolbar/ToolBar
 */
public class ToggleButtonSample extends Sample {

    public ToggleButtonSample() {
        // create label to show result of selected toggle button
        final Label label = new Label();
        label.setStyle("-fx-font-size: 2em;");
        // create 3 toggle buttons and a toogle group for them
        final ToggleButton tb1 = new ToggleButton("Cat");
        final ToggleButton tb2 = new ToggleButton("Dog");
        final ToggleButton tb3 = new ToggleButton("Horse");
        ToggleGroup group = new ToggleGroup();
        tb1.setToggleGroup(group);
        tb2.setToggleGroup(group);
        tb3.setToggleGroup(group);
        group.selectedToggleProperty().addListener(new ChangeListener<Toggle>() {
            @Override public void changed(ObservableValue<? extends Toggle> observable, Toggle oldValue, Toggle selectedToggle) {
                if(selectedToggle!=null) {
                    label.setText(((ToggleButton) selectedToggle).getText());
                }
                else {
                    label.setText("...");
                }
            }
        });
        // select the first button to start with
        group.selectToggle(tb1);
        // add buttons and label to grid and set their positions
        GridPane.setConstraints(tb1,0,0);
        GridPane.setConstraints(tb2,1,0);
        GridPane.setConstraints(tb3,2,0);
        GridPane.setConstraints(label,0,1,3,1);
        GridPane grid = new GridPane();
        grid.setVgap(20);
        grid.setHgap(10);
        getChildren().add(grid);
        grid.getChildren().addAll(tb1, tb2, tb3, label);
    }
}