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Gibt es eine einfache Möglichkeit, eine Bildlaufleiste in eine Alarm-Box zu setzen und sie tatsächlich scrollen zu lassen? Ich füge einen Rasterbereich zum Bildlaufbereich hinzu. Während das Benachrichtigungsfeld aktiv ist, füge ich Inhalte hinzu und entferne sie, wenn der Benutzer dies anfordert. Leider gibt es eine Grenze für die Menge, die ich hinzufügen kann, weil die Alarmbox über die Bildschirmhöhe hinaus wächst. Daher der Grund für ein Bildlauffenster. Das Problem ist, es scheint nicht zu glauben, dass es scrollen muss, obwohl der Inhalt unter dem Bildschirm ist. Ich habe eine Menge Dinge ausprobiert, aber jedes Mal, wenn die Bildlaufleisten mit dem Bildlauffeld wachsen. Ich habe sogar eine benutzerdefinierte ScrollPane ausprobiert, wie von James_D vorgeschlagen. Immer noch kein Glück.ScrollBar in benutzerdefiniertem Alert-Feld funktioniert nicht JavaFX
Jede Hilfe wäre toll! Hier
ist der Code für das benutzerdefinierte Benachrichtigungsfeld
import java.util.ArrayList;
import java.util.List;
import com.sun.xml.internal.bind.v2.runtime.unmarshaller.XmlVisitor.TextPredictor;
import javafx.application.Platform;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Bounds;
import javafx.geometry.Insets;
import javafx.scene.Node;
import javafx.scene.control.Alert;
import javafx.scene.control.Button;
import javafx.scene.control.DialogPane;
import javafx.scene.control.Label;
import javafx.scene.control.ScrollPane;
import javafx.scene.control.ScrollPane.ScrollBarPolicy;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.Region;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
public class SettingsChangeWindow extends Alert {
public enum SETTING_TYPE {SINGLE, MULTIPLE};
private SETTING_TYPE type = null;
private IndexedGridPane parentGrid;
private SettingBean bean;
private DialogPane parentPane;
public SettingsChangeWindow(SettingBean bean) {
super(AlertType.CONFIRMATION);
this.bean = bean;
this.type = bean.getType();
SizeableScrollPane scroll = new SizeableScrollPane();
scroll.setHbarPolicy(ScrollBarPolicy.ALWAYS);
scroll.setVbarPolicy(ScrollBarPolicy.ALWAYS);
scroll.setFitToHeight(true);
scroll.setFitToWidth(true);
parentGrid = new IndexedGridPane();
scroll.setContent(parentGrid);
this.parentPane = getDialogPane();
setResizable(true);
if(type == SETTING_TYPE.SINGLE){
FriendlyVBox vbox = new FriendlyVBox();
setTitle("Change " + bean.getName());
setHeaderText("Change the " + bean.getName() + " value by changing the value in the box");
parentGrid.setPadding(new Insets(20, 150, 0, 10));
vbox.getChildren().addAll(new Label(bean.getName()), new AutoTextBox(bean.getValue()));
parentGrid.add(vbox, 0, 0);
}else{
setTitle("Change " + bean.getName());
String header = "Change the " + bean.getName() + " value by changing the value in the box\n";
header += "You may add and delete value sets (may require resizing)";
setHeaderText(header);
parentGrid.add(new AddButton(), 1, 0);
parentGrid.add(new RemoveButton(), 2, 0);
addMultipleValues();
}
this.parentPane.setContent(scroll);
// parentPane.setMinHeight(GridPane.USE_PREF_SIZE);
// parentPane.setMinWidth(GridPane.USE_PREF_SIZE);
// getDialogPane().getChildren().stream().forEach(node -> ((Label)node).setMinHeight(Region.USE_PREF_SIZE));
}
public SettingBean getValue(){
return bean;
}
private void addMultipleValues(){
List<Object> values = bean.getChildren();
if(bean.getName().equals("TSPAddressPostal") || bean.getName().equals("SchemeOperatorAddressPostal")){
for(Object addr : values){
PhysicalAddressBean address = (PhysicalAddressBean)addr;
addPhysicalAddress(address);
}
}else{
for(Object uri : values){
addURI((String)uri);
}
}
}
public void saveValue(){
if(type == SETTING_TYPE.SINGLE){
List<Node> children = parentGrid.getChildren();
for(Node child : children){
if(child instanceof FriendlyVBox){
// cast to FriendlyVBox
String value = ((FriendlyVBox)child).getTextField().getText();
this.bean.setValue(value);
}
}
}else{
saveMultipleValues();
}
}
/**
* For values in XML that can have multiple child nodes
*/
private void saveMultipleValues(){
switch(bean.getName()){
case "TSPAddressPostal" :
savePostalAddress();
break;
case "SchemeOperatorAddressPostal":
savePostalAddress();
break;
default:
saveURI();
break;
}
}
/**
* If the setting bean is encapsulating a list of physical address
* (when the name is: PostalAddress) populate via predefined structure
*/
private void savePostalAddress(){
List<Object> addresses = new ArrayList<>();
List<Node> children = parentGrid.getChildren();
for(Node child : children){
if(child instanceof IndexedGridPane){
IndexedGridPane pane = (IndexedGridPane) child;
PhysicalAddressBean add = new PhysicalAddressBean();
// each address attribute in the order listed in Trust List XML
add.setStreetAddress(((FriendlyVBox)pane.get(0, 1)).getTextField().getText());
add.setLocality(((FriendlyVBox)pane.get(0, 2)).getTextField().getText());
add.setPostalCode(((FriendlyVBox)pane.get(0, 3)).getTextField().getText());
add.setCountryName(((FriendlyVBox)pane.get(0, 4)).getTextField().getText());
// add address bean to list
addresses.add(add);
}
}
bean.setChildren(addresses);
}
/**
* used to store any values in the XML that can have multiple child URI values
*/
private void saveURI(){
List<Object> uris = new ArrayList<>();
List<Node> children = parentGrid.getChildren();
for(Node child : children){
if(child instanceof FriendlyVBox){
FriendlyVBox vBox = (FriendlyVBox) child;
uris.add(vBox.getTextField().getText());
}
}
bean.setChildren(uris);
}
private void addURI(String uri){
int newSlot = parentGrid.getRowCount();
FriendlyVBox vBox = new FriendlyVBox();
vBox.getChildren().addAll(new Label("\n" + bean.getName()), new AutoTextBox(""));
parentGrid.add(vBox, 0, newSlot);
}
private void addPhysicalAddress(){
int newSlot = parentGrid.getRowCount();
IndexedGridPane pane = new IndexedGridPane();
Label label = new Label("\nPostal Address");
pane.add(label, 0, 0);
label.setFont(Font.font("system", FontWeight.BOLD, 12));
FriendlyVBox postal = new FriendlyVBox();
postal.getChildren().addAll(new Label("Street Address"), new AutoTextBox(""));
FriendlyVBox local = new FriendlyVBox();
local.getChildren().addAll(new Label("Locale"), new AutoTextBox(""));
FriendlyVBox postalCode = new FriendlyVBox();
postalCode.getChildren().addAll(new Label("Postal Code"), new AutoTextBox(""));
FriendlyVBox country = new FriendlyVBox();
country.getChildren().addAll(new Label("Country Name"), new AutoTextBox(""));
pane.add(postal, 0, 1);
pane.add(local, 0, 2);
pane.add(postalCode, 0, 3);
pane.add(country, 0, 4);
parentGrid.add(pane, 0, newSlot);
}
private void addPhysicalAddress(PhysicalAddressBean address){
int newSlot = parentGrid.getRowCount();
IndexedGridPane pane = new IndexedGridPane();
Label label = new Label("\nPostal Address");
pane.add(label, 0, 0);
label.setFont(Font.font("system", FontWeight.BOLD, 12));
FriendlyVBox street = new FriendlyVBox();
street.getChildren().addAll(new Label("Street Address"), new AutoTextBox(address.getStreetAddress()));
FriendlyVBox local = new FriendlyVBox();
local.getChildren().addAll(new Label("Locale"), new AutoTextBox(address.getLocality()));
FriendlyVBox postalCode = new FriendlyVBox();
postalCode.getChildren().addAll(new Label("Postal Code"), new AutoTextBox(address.getPostalCode()));
FriendlyVBox country = new FriendlyVBox();
country.getChildren().addAll(new Label("Country Name"), new AutoTextBox(address.getCountryName()));
pane.add(street, 0, 1);
pane.add(local, 0, 2);
pane.add(postalCode, 0, 3);
pane.add(country, 0, 4);
parentGrid.add(pane, 0, newSlot);
}
private class IndexedGridPane extends GridPane{
public Node get(final int row, final int column) {
Node result = null;
ObservableList<Node> childrens = super.getChildren();
for (Node node : childrens) {
if(super.getRowIndex(node) == row && super.getColumnIndex(node) == column) {
result = node;
break;
}
}
return result;
}
public int getRowCount() {
int numRows = getRowConstraints().size();
for (int i = 0; i < getChildren().size(); i++) {
Node child = getChildren().get(i);
if (child.isManaged()) {
Integer rowIndex = GridPane.getRowIndex(child);
if(rowIndex != null){
numRows = Math.max(numRows,rowIndex+1);
}
}
}
return numRows;
}
}
private class AutoTextBox extends TextField{
public AutoTextBox(String contents){
setMinWidth(Region.USE_PREF_SIZE);
setMaxWidth(Region.USE_PREF_SIZE);
textProperty().addListener(new AutoAdjustText());
setText(contents);
}
private class AutoAdjustText implements ChangeListener<String>{
@Override
public void changed(ObservableValue<? extends String> ov,
String prevText, String currText) {
Platform.runLater(() -> {
Text text = new Text(currText);
text.setFont(getFont()); // Set the same font, so the size is the same
double width = text.getLayoutBounds().getWidth() // This big is the Text in the TextField
+ getPadding().getLeft() + getPadding().getRight() // Add the padding of the TextField
+ 2d; // Add some spacing
setPrefWidth(width); // Set the width
positionCaret(getCaretPosition()); // If you remove this line, it flashes a little bit
});
}
}
}
private class FriendlyVBox extends VBox{
public TextField getTextField(){
List<Node> children = getChildren();
for(Node child : children){
if(child instanceof TextField){
return (TextField)child;
}
}
return null;
}
}
private class AddButton extends Button{
public AddButton(){
setText("Add+");
onActionProperty().set(new AddValue());
}
private class AddValue implements EventHandler<ActionEvent>{
@Override
public void handle(ActionEvent event) {
if(bean.getName().equals("TSPAddressPostal") || bean.getName().equals("SchemeOperatorAddressPostal")){
addPhysicalAddress();
}else{
addURI("Add URI here");
// parentPane.setContent(parentGrid);
}
parentPane.getScene().getWindow().sizeToScene();
}
}
}
private class RemoveButton extends Button{
public RemoveButton(){
setText("Remove");
onActionProperty().set(new RemoveValue());
}
private class RemoveValue implements EventHandler<ActionEvent>{
@Override
public void handle(ActionEvent event) {
int rowCount = parentGrid.getRowCount();
parentGrid.getChildren().remove(rowCount);
parentPane.getScene().getWindow().sizeToScene();
}
}
}
private class SizeableScrollPane extends ScrollPane{
public SizeableScrollPane() {
viewportBoundsProperty().addListener(new Resizer());
hvalueProperty().addListener(new Resizer());
vvalueProperty().addListener(new Resizer());
}
private class Resizer implements ChangeListener<Object> {
@Override
public void changed(ObservableValue<? extends Object> observable, Object oldValue, Object newValue) {
double hmin = getHmin();
double hmax = getHmax();
double hvalue = getHvalue();
double contentWidth = getContent().getLayoutBounds().getWidth();
double viewportWidth = getViewportBounds().getWidth();
double hoffset =
Math.max(0, contentWidth - viewportWidth) * (hvalue - hmin)/(hmax - hmin);
double vmin = getVmin();
double vmax = getVmax();
double vvalue = getVvalue();
double contentHeight = getContent().getLayoutBounds().getHeight();
double viewportHeight = getViewportBounds().getHeight();
double voffset =
Math.max(0, contentHeight - viewportHeight) * (vvalue - vmin)/(vmax - vmin);
System.out.printf("Offset: [%.1f, %.1f] width: %.1f height: %.1f %n",
hoffset, voffset, viewportWidth, viewportHeight);
}
}
}
}