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Experimental components for JavaFX 2
/**
* BigDecimalFieldSkin.java
*
* Copyright (c) 2011-2014, JFXtras
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the organization nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package jfxtras.labs.internal.scene.control.skin;
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.application.Platform;
import javafx.beans.InvalidationListener;
import javafx.beans.Observable;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.HPos;
import javafx.geometry.Insets;
import javafx.geometry.VPos;
import javafx.scene.control.Control;
import javafx.scene.control.SkinBase;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
import javafx.scene.layout.StackPane;
import javafx.scene.shape.LineTo;
import javafx.scene.shape.MoveTo;
import javafx.scene.shape.Path;
import javafx.util.Duration;
import jfxtras.labs.scene.control.BigDecimalField;
import java.math.BigDecimal;
import java.text.ParseException;
/**
* Skin implementation for {@link BigDecimalField}.
*
* @author Thomas Bolz
*/
public class BigDecimalFieldSkin extends SkinBase {
private BigDecimalField CONTROL;
public BigDecimalFieldSkin(BigDecimalField control) {
super(control);
this.CONTROL = control;
createNodes();
initFocusSimulation();
getSkinnable().requestLayout();
}
private NumberTextField textField;
private StackPane btnUp;
private StackPane btnDown;
private Path arrowUp;
private Path arrowDown;
private final double ARROW_SIZE = 4;
private final double ARROW_HEIGHT = 0.7;
private Timeline timeline;
public BigDecimalField getControl() {return CONTROL;}
/**
* Creates the Nodes in this Skin
*/
private void createNodes() {
textField = new NumberTextField();
textField.promptTextProperty().bind(CONTROL.promptTextProperty());
//
// The Buttons are StackPanes with a Path on top
//
// Button Up
btnUp = new StackPane();
btnUp.getStyleClass().add("arrow-button");
arrowUp = new Path();
arrowUp.getStyleClass().add("spinner-arrow");
arrowUp.getElements().addAll(new MoveTo(-ARROW_SIZE, 0), new LineTo(0, -ARROW_SIZE * ARROW_HEIGHT),
new LineTo(ARROW_SIZE, 0));
btnUp.getChildren().add(arrowUp);
// Button Down
btnDown = new StackPane();
btnDown.getStyleClass().add("arrow-button");
arrowDown = new Path();
arrowDown.getStyleClass().add("spinner-arrow");
arrowDown.getElements().addAll(new MoveTo(-ARROW_SIZE, 0), new LineTo(0, ARROW_SIZE * ARROW_HEIGHT),
new LineTo(ARROW_SIZE, 0));
btnDown.getChildren().add(arrowDown);
this.getChildren().addAll(textField, btnUp, btnDown);
//
// Mouse Handler for buttons
//
timeline = new Timeline();
final EventHandler btnUpHandler = actionEvent -> CONTROL.increment();
btnUp.setOnMousePressed(arg0 -> {
final KeyFrame kf = new KeyFrame(Duration.millis(50), btnUpHandler);
timeline.setDelay(Duration.millis(500));
timeline.getKeyFrames().clear();
timeline.getKeyFrames().add(kf);
timeline.setCycleCount(Timeline.INDEFINITE);
timeline.play();
btnUpHandler.handle(null);
});
btnUp.setOnMouseReleased(mouseEvent -> timeline.stop());
final EventHandler btnDownHandler = actionEvent -> {
CONTROL.decrement();
};
btnDown.setOnMousePressed(arg0 -> {
final KeyFrame kf = new KeyFrame(Duration.millis(50), btnDownHandler);
timeline.setDelay(Duration.millis(500));
timeline.getKeyFrames().clear();
timeline.getKeyFrames().add(kf);
timeline.setCycleCount(Timeline.INDEFINITE);
timeline.play();
btnDownHandler.handle(null);
});
btnDown.setOnMouseReleased(mouseEvent -> timeline.stop());
}
@Override
protected void layoutChildren(double contentX, double contentY, double contentWidth, double contentHeight) {
super.layoutChildren(contentX, contentY, contentWidth, contentHeight); //To change body of generated methods, choose Tools | Templates.
Insets insets = getSkinnable().getInsets();
double x = insets.getLeft();
double y = insets.getTop();
double textfieldHeight = contentHeight;
double buttonWidth = textField.prefHeight(-1);
Insets buttonInsets = btnDown.getInsets();
double textfieldWidth = this.getSkinnable().getWidth()-insets.getLeft()-insets.getRight() - buttonWidth - buttonInsets.getLeft() - buttonInsets.getRight();
layoutInArea(textField, x, y, textfieldWidth, textfieldHeight, Control.USE_PREF_SIZE, HPos.LEFT, VPos.TOP);
layoutInArea(btnUp, x+textfieldWidth+buttonInsets.getLeft(), y, buttonWidth, textfieldHeight/2, Control.USE_PREF_SIZE, HPos.LEFT, VPos.TOP);
layoutInArea(btnDown, x+textfieldWidth+buttonInsets.getLeft(), y+textfieldHeight/2, buttonWidth, textfieldHeight/2, Control.USE_PREF_SIZE, HPos.LEFT, VPos.TOP);
}
@Override
protected double computePrefWidth(double PREF_WIDTH, double topInset, double rightInset, double bottomInset, double leftInset) {
super.computePrefWidth(PREF_WIDTH, topInset, rightInset, bottomInset, leftInset);
double prefWidth = getSkinnable().getInsets().getLeft()
+ textField.prefWidth(PREF_WIDTH)
+ textField.prefHeight(PREF_WIDTH)
+ getSkinnable().getInsets().getRight();
return prefWidth;
}
@Override
protected double computePrefHeight(double PREF_HEIGHT, double topInset, double rightInset, double bottomInset, double leftInset) {
super.computePrefHeight(PREF_HEIGHT, topInset, rightInset, bottomInset, leftInset);
double prefHeight = getSkinnable().getInsets().getTop()
+ textField.prefHeight(PREF_HEIGHT)
+getSkinnable().getInsets().getBottom();
return prefHeight;
}
/**
* When the CONTROL or the textfield of the Skin gains the focus we make that visible by adding/removing
* a CSS style that visually simulates the focus.
*
*/
private void initFocusSimulation() {
// If the TextField gains/loses focus the style of the CONTROL is changed
CONTROL.focusedProperty().addListener((ov, wasFocused, isFocused) -> {
if (isFocused) {
Platform.runLater(() -> textField.requestFocus());
}
});
// If the TextField gains/loses focus the style of the CONTROL is changed
textField.focusedProperty().addListener((ov, wasFocused, isFocused) -> {
if (isFocused) {
CONTROL.getStyleClass().add("big-decimal-field-focused");
} else {
CONTROL.getStyleClass().remove("big-decimal-field-focused");
}
});
}
/**
* The TextField that is used to edit and display the BigDecimal.
*/
public class NumberTextField extends javafx.scene.control.TextField {
public NumberTextField() {
getStyleClass().add("number-text-field");
initHandlers();
setText(CONTROL.getText());
}
private void initHandlers() {
// try to parse when RETURN is hit...
setOnAction(new EventHandler() {
@Override
public void handle(ActionEvent arg0) {
parseAndFormatInput();
}
});
// ...or focus is lost
focusedProperty().addListener(new ChangeListener() {
@Override
public void changed(ObservableValue observable, Boolean oldValue, Boolean newValue) {
if (!newValue.booleanValue()) {
parseAndFormatInput();
}
}
});
// If number in controller changes update the TextField with the formatted number string
CONTROL.numberProperty().addListener(new InvalidationListener() {
@Override
public void invalidated(Observable arg0) {
setText(CONTROL.getText());
}
});
// key up/down ==> inc/dec
addEventFilter(KeyEvent.KEY_PRESSED, new EventHandler() {
@Override
public void handle(KeyEvent keyEvent) {
if (keyEvent.getCode() == KeyCode.DOWN) {
CONTROL.decrement();
keyEvent.consume();
}
if (keyEvent.getCode() == KeyCode.UP) {
CONTROL.increment();
keyEvent.consume();
}
}
});
}
/**
* Tries to parse the user input to a number according to the provided
* NumberFormat
*/
private void parseAndFormatInput() {
try {
String input = getText();
if (input == null || input.length() == 0) {
CONTROL.setNumber(null);
return;
}
Number parsedNumber = CONTROL.getFormat().parse(input);
BigDecimal newValue = new BigDecimal(parsedNumber.toString());
// if parsing succeeded change number in Controller
CONTROL.setNumber(newValue);
selectAll();
} catch (ParseException ex) {
// If parsing fails keep old number
setText(CONTROL.getText());
} catch (IllegalArgumentException ex) {
// If minValue and/or maxValue are set and the new number is out of these bounds
// keep also the old number
setText(CONTROL.getText());
}
}
}
}