Java ChangeListener.changed方法代码示例

import javafx.beans.value.ChangeListener; //导入方法依赖的package包/类
private void initSpinners() {
    ChangeListener<Integer> listener = (observable, oldValue, newValue) -> {
        int sup = suppliers.getValue();
        int rec = recipients.getValue();

        restoreMatrix(transport,sup,rec,true);
        restoreMatrix(result,sup,rec, false);
        restoreVector(capability,sup,true);
        restoreVector(production,sup, true);
        restoreVector(storage,sup, true);
        restoreVector(excess,sup, false);
        restoreVector(demand,rec, true);
    };
    suppliers.setValueFactory(new SpinnerValueFactory.IntegerSpinnerValueFactory(1,6,1,1));
    recipients.setValueFactory(new SpinnerValueFactory.IntegerSpinnerValueFactory(1,10,1,1));
    suppliers.valueProperty().addListener(listener);
    recipients.valueProperty().addListener(listener);
    listener.changed(null,null,null);
}
 

import javafx.beans.value.ChangeListener; //导入方法依赖的package包/类
public EditableText(double positionX, double positionY) {
    super();
    text.getStyleClass().add("state-text");
    text.setEditable(false);

    ChangeListener updater = (observable, oldValue, newValue) -> {
        text.setPrefWidth(getWidth());
        text.setPrefHeight(getHeight());
        relocate(
                positionX - getWidth()/2,
                positionY - getHeight()/2
        );

        mask.setPrefWidth(getWidth());
        mask.setPrefHeight(getHeight());
    };

    widthProperty().addListener(updater);
    heightProperty().addListener(updater);
    updater.changed(null, null, null);

    mask.getStyleClass().add("state-text-mask");

    this.getChildren().add(text);
    this.getChildren().add(mask);
}
 

import javafx.beans.value.ChangeListener; //导入方法依赖的package包/类
/**
 * IndexTableCell
 * @param tableView the table the index-cell should be attached to. This value is required for
 *                  displaying the comment icon.
 */
public IndexTableCell(TableView tableView) {
  super();
  this.tableView = tableView;
  ChangeListener<Number> indexChangeListener = (observableValue, oldIndex, newIndexNumber) -> {
    int newIndex = newIndexNumber.intValue();
    if (newIndex < 0) {
      return;
    }
    icon.visibleProperty().bind(getCommentPropertyByIndex(newIndex).isEmpty().not());
    tooltip.textProperty().bind(getCommentPropertyByIndex(newIndex));
  };
  indexChangeListener.changed(null, 0, this.getIndex());
  this.indexProperty().addListener(indexChangeListener);

  this.setGraphic(icon);
  this.setTextAlignment(TextAlignment.RIGHT);
  this.setTooltip(tooltip);
}
 

import javafx.beans.value.ChangeListener; //导入方法依赖的package包/类
public static StackPane createStretchingImagePane(final String image, final Scene scene)
{
	// the amount of work required to emulate the GinENGINE background scaler was quite excessive :/

	final ImageView backgroundImageView = new ImageView(JavaFxHelper.buildResourcePath(image));
	final double bgWidth = backgroundImageView.getImage().getWidth();
	final double bgHeight = backgroundImageView.getImage().getHeight();
	final SimpleDoubleProperty scaledWidth = new SimpleDoubleProperty();
	final SimpleDoubleProperty scaledHeight = new SimpleDoubleProperty();
	ChangeListener<? super Number> chl = new ChangeListener<Number>()
	{
		@Override
		public void changed(ObservableValue<? extends Number> observable, Number oldValue, Number newValue)
		{
			double scalingFactor = Math.max((scene.widthProperty().get() / bgWidth), (scene.heightProperty().get() / bgHeight));
			scaledWidth.set(bgWidth * scalingFactor);
			scaledHeight.set(bgHeight * scalingFactor);
		}
	};
	scene.widthProperty().addListener(chl);
	scene.heightProperty().addListener(chl);
	chl.changed(null, null, null);
	backgroundImageView.setPreserveRatio(true);
	backgroundImageView.fitWidthProperty().bind(scaledWidth);
	backgroundImageView.fitHeightProperty().bind(scaledHeight);
	StackPane backgroundImageStack = new StackPane();
	backgroundImageStack.getChildren().add(backgroundImageView);
	return backgroundImageStack;
}
 

import javafx.beans.value.ChangeListener; //导入方法依赖的package包/类
private void init() {
	setHgap(GuiConstants.padding);
	setVgap(GuiConstants.padding);

	InetSocketAddress address = config.getUidAddress();

	add(new Label("Host:"), 0, 0);
	hostField = new TextField(address != null ? address.getHostString() : "");
	add(hostField, 1, 0);

	add(new Label("Port:"), 0, 1);
	portField = new TextField(address != null ? Integer.toString(address.getPort()) : "");
	add(portField, 1, 1);

	add(new Label("User:"), 0, 2);
	userField = new TextField(config.getUidUser() != null ? config.getUidUser() : "");
	add(userField, 1, 2);

	add(new Label("Password:"), 0, 3);
	passwordField = new TextField(config.getUidPassword() != null ? config.getUidPassword() : "");
	add(passwordField, 1, 3);

	add(new Label("Project:"), 0, 4);
	projectField = new TextField(config.getUidProject() != null ? config.getUidProject() : "");
	add(projectField, 1, 4);

	add(new Label("Version A:"), 0, 5);
	versionAField = new TextField(config.getUidVersionA() != null ? config.getUidVersionA() : "");
	add(versionAField, 1, 5);

	add(new Label("Version B:"), 0, 6);
	versionBField = new TextField(config.getUidVersionB() != null ? config.getUidVersionB() : "");
	add(versionBField, 1, 6);

	ChangeListener<String> changeListener = (observable, oldValue, newValue) -> {
		int port;

		okButton.setDisable(hostField.getText().isEmpty()
				|| portField.getText().isEmpty()
				|| !portField.getText().matches("\\d{1,5}")
				|| (port = Integer.parseInt(portField.getText())) > 0xffff
				|| port <= 0
				|| userField.getText().isEmpty()
				|| passwordField.getText().isEmpty()
				|| projectField.getText().isEmpty()
				|| versionAField.getText().isEmpty()
				|| versionBField.getText().isEmpty());
	};

	hostField.textProperty().addListener(changeListener);
	portField.textProperty().addListener(changeListener);
	userField.textProperty().addListener(changeListener);
	passwordField.textProperty().addListener(changeListener);
	projectField.textProperty().addListener(changeListener);
	versionAField.textProperty().addListener(changeListener);
	versionBField.textProperty().addListener(changeListener);

	changeListener.changed(null, null, null);
}