Java FX dialog

JavaFX dialog

In JavaFX, a dialog wraps down a DialogPane and offers the required API to give it to end-users. This class has one generic type, R, that denotes the result property type. A dialog can be organized for adding content, adding buttons, setting modality, and state the blocking as well as non-blocking behavior of the dialog. Several properties can be gain access to and set by the API of the dialog– header text, title, content text, width/height, location, resizable, and the content graphic or header graphic.

Let us see more on the JavaFX dialog in the below sections:

Syntax:

Below is the syntax used for JavaFXdialog.

Dialog< String> dg = new Dialog< String>();

Constructors

Following is the constructor of JavaFX dialog.

Dialog():

A dialog will be created without an identified owner.

Methods

Below are the common methods used in JavaFXdialog.

• buildEventDispatchChain(EventDispatchChaintail)

  An Event Dispatch Chain will be constructed for the target.

• close()

  Dialog will be hidden.

• contentTextProperty()

  For the dialog, this property denotes a content text.

• getDialogPane()

  dialogPane property’s value will be retrieved.

• dialogPaneProperty()

  Dialog’s root node, the pane consists of all visual items depicted in the dialog.

• getGraphic()

  graphic property’s value will be retrieved.

• getContentText()

  currently-set text content will be returned for the dialog pane.

• getHeaderText()

  currently-set header content will be returned for the dialog pane.

• getHeight()

  Dialog’s height will be returned.

• getModality()

  Dialog’s modality attribute will be returned.

• getOnCloseRequest()

  onCloseRequest property’s value will be retrieved.

• getOnHidden()

  onHidden property’s value will be retrieved.

• getOnHiding()

  onHiding property’s value will be retrieved.

• getOnShowing()

  onShowing property’s value will be retrieved.

• getOnShown()

  onShown property’s value will be retrieved.

• getResult()

  result property’s value will be retrieved.

• getResultConverter()

  resultConverter property’s value will be retrieved.

• getX()

  x property’s value will be retrieved.

• getY()

  y property’s value will be retrieved.

• getOwner()

  Dialog’s owner window will be retrieved or if unowned, null will be retrieved.

• getTitle()

  Dialog’s title will be retrieved.

• getWidth()

  Dialog’s width will be retrieved.

• hide()

  Dialog will be closed.

• headerTextProperty()

  Dialog pane’s header text will be represented by this property.

• heightProperty()

  Dialog pane’s height will be represented by this property.

• initModality(Modalitymodality)

  Dialog’s modality will be specified.

• initOwner(Windowwindow)

  Dialog’s owner Window will be specified or if top-level unowned, null will be retrieved.

• initStyle(StageStylestyle)

  Dialog’s style will be specified.

• isResizable()

  Dialog’s resize ability will be returned. That is, checks whether it is resizable or not.

• isShowing()

  Dialog’s display ability will be returned. That is, checks whether it is shown or not.

• onCloseRequestProperty()

  If there is an external request for closing the dialog is present, this property will be called.

• onHiddenProperty()

  After dialog is hidden, this property will be called.

• onHidingProperty()

  Before dialog is hidden, this property will be called.

• onShowingProperty()

  Before dialog is shown, this property will be called.

• onShownProperty()

  After dialog is shown, this property will be called.

• resizableProperty()

  Dialog’s resize ability will be returned.

• resultProperty()

  Dialog’s return value will be checked when this property is called.

• setContentText(StringcontentText)

  String that has to be displayed in the content area of the dialog will be set.

• setDialogPane(DialogPanevalue)

  Dialog pane’s value will be set by this property.

• setHeaderText(StringheaderText)

  String that has to be displayed in the header area of the dialog will be set.

• setHeight(double height)

  Dialog’s height will be set.

• setOnCloseRequest(EventHandler< DialogEvent> value)

  onCloseRequest property’s value will be set.

• setOnHidden(EventHandler< DialogEvent> value)

  onHidden property’s value will be set.

• setOnHiding(EventHandler< DialogEvent> value)

  onHiding property’s value will be set.

• setOnShowing(EventHandler< DialogEvent> value)

  onShowing property’s value will be set.

• setOnShown(EventHandler< DialogEvent> value)

  onShown property’s value will be set.

• setResizable(boolean resizable)

  dialog’s resize ability by the user will be set.

• setResult(Rvalue)

  result property’s value will be set.

• setResultConverter(Callback< ButtonType,R> value)

  resultConverter property’s value will be set.

• setX(double x)

  x property’s value will be set.

• setY(double y)

  y property’s value will be set.

• setTitle(Stringtitle)

  Dialog’s title will be set.

• setWidth(double width)

  Dialog’s width will be set.

• setGraphic(Nodegraphic)

  dialog graphic will be set that will be shown in header if that is displaying or to the content left side.

• show()

  Dialog will be shown but won’t wait for response of the user.

• showAndWait()

  Dialog will be shown and wait for response of the user.

• showingProperty()

  This property denotes whether the dialog is currently displaying.

• titleProperty()

  Dialog’s title property will be returned.

• widthProperty()

  Dialog’s width property will be returned.

• xProperty()

  Dialog’s horizontal location.

• yProperty()

  Dialog’s vertical location.

Example

Let us see a sample program for creating a JavaFX dialog.

Code:

//JavaFXprorgram that demonstrates the dg
//import all necessary classes
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ButtonBar.ButtonData;
import javafx.scene.control.ButtonType;
import javafx.scene.control.Dialog;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.scene.text.FontPosture;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
//main class
public class DialogProgram extends Application {
//starts here...
@Override
public void start(Stage st)
{
//dialog creation
Dialog< String> dg = new Dialog< String>();
//set title
dg.setTitle("Sample dialog");
ButtonTypebt = new ButtonType("Click", ButtonData.OK_DONE);
//Set dialog content
dg.setContentText("dialog sample for demo");
//To the dialog pane, add the buttons
dg.getDialogPane().getButtonTypes().add(bt);
//Set the label
Text tt = new Text("Please click on the button for displaying the dialog");
//set the font
Fontfn = Font.font("verdana", FontWeight.BOLD, FontPosture.ITALIC, 14);
tt.setFont(fn);
//Create a button
Buttonbtn = new Button("Dialog display");
//Dialog display on button clicking
btn.setOnAction(e -> {
dg.showAndWait();
});
//create a hbox for holding button as well as label
HBoxpn = new HBox(14);
//Set the space seperating the nodes of a pane
pn.setPadding(new Insets(60, 160, 60, 70));
//add children
pn.getChildren().addAll(tt, btn);
//Create a scene object
Scene sc = new Scene(new Group(pn), 596, 252, Color.RED);
//set the title
st.setTitle("Dialogg");
//set the scene
st.setScene(sc);
st.show();
}
public static void main(String args[]){
launch(args);
}
}

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