Столкнувшись с проблемой движения фокуса B/W разные компоненты в Codearea Richtext в Javafx ⇐ JAVA

[Anonymous]

Я пытаюсь включить поле для предложений (аналогично полему Vscode Code) в Codearea Richtext. Но он сталкивается с серьезными проблемами: < /p>

Курсор не меняется, когда мышь находится внутри коробки предложений, он остается I-beam < /li>
Свиток не работает при выполнении мыши внутри ящика для предложений, а также прокручивать Codearea < /li>
. Будьте просто в положении X. x.package com.example.notepad;
import javafx.application.Platform;
import javafx.fxml.FXML;
import javafx.geometry.Pos;
import javafx.scene.Cursor;
import javafx.scene.control.ListView;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import org.fxmisc.richtext.CodeArea;

import java.util.*;
import java.util.stream.Collectors;

public class suggestion_handler {

public VBox codeContainer;
@FXML private StackPane editorRoot;
@FXML public ListView suggestionList;

private CodeArea codeArea;

@FXML
public void initialize() {
// This makes the suggestionBox itself transparent for mouse events
editorRoot.setMouseTransparent(false);
suggestionList.setCursor(Cursor.DEFAULT);

configureSuggestionList();
editorRoot.setCursor(Cursor.TEXT);
suggestionList.setCursor(Cursor.DEFAULT);
}

public void setCodeArea(CodeArea area) {
this.codeArea = area;
attachListeners(); // safe to call now, codeArea is assigned
}

private void configureSuggestionList() {
suggestionList.setFixedCellSize(24);

suggestionList.setFocusTraversable(false);

suggestionList.setOnMouseReleased(event -> {
acceptSelected();
event.consume();
});
suggestionList.setOnScroll(event -> {
if (codeArea != null) {
codeArea.fireEvent(event.copyFor(codeArea, codeArea));
event.consume();
}
});

suggestionList.setOnKeyPressed(event -> {
if (event.getCode() == KeyCode.ENTER) acceptSelected();
else if (event.getCode() == KeyCode.ESCAPE) hideSuggestions();
});
}

private boolean listenersAttached = false;

private void attachListeners() {
if (listenersAttached || codeArea == null) return;
listenersAttached = true;

codeArea.textProperty().addListener((_, _, _) -> Platform.runLater(this::showSuggestionsIfNeeded));
codeArea.caretPositionProperty().addListener((_, _, _) -> Platform.runLater(this::showSuggestionsIfNeeded));

codeArea.addEventFilter(KeyEvent.KEY_PRESSED, event -> {
if (suggestionList.isVisible()) {
suggestionList.getSelectionModel().selectFirst();
if (event.getCode() == KeyCode.UP) {
suggestionList.requestFocus();
suggestionList.getSelectionModel().selectFirst();
event.consume();
} else if (event.getCode() == KeyCode.DOWN) {
suggestionList.requestFocus();
suggestionList.getSelectionModel().select(1);
event.consume();
} else {
if (event.getCode() == KeyCode.ENTER) {
acceptSelected();
event.consume();
} else if (event.getCode() == KeyCode.ESCAPE) {
hideSuggestions();
event.consume();
}
}
}
else codeArea.requestFocus();
});
}

private void showSuggestionsIfNeeded() {
String prefix = getCurrentWordPrefix();
System.out.println(prefix);
if (!prefix.isEmpty()) {
List matches = findMatches(prefix);
if (!matches.isEmpty()) {
suggestionList.getItems().setAll(matches);
suggestionList.getSelectionModel().selectFirst();
showSuggestions();
positionSuggestionBox();
return;
}
}
hideSuggestions();
}

private String getCurrentWordPrefix() {
int caretPos = codeArea.getCaretPosition();
if (caretPos == 0) return "";
String text = codeArea.getText(0, caretPos);
int i = text.length() - 1;
while (i >= 0 && Character.isLetterOrDigit(text.charAt(i))) i--;
return text.substring(i + 1);
}

private List findMatches(String prefix) {
String text = codeArea.getText();
Set words = new HashSet(Arrays.asList(text.split("\\W+")));
return words.stream()
.filter(w -> !w.equals(prefix) && w.startsWith(prefix))
.sorted()
.collect(Collectors.toList());
}

private void positionSuggestionBox() {
suggestionList.setPrefWidth(200);
suggestionList.setPrefHeight(120);
suggestionList.setMaxWidth(200);
suggestionList.setMaxHeight(120);
StackPane.setAlignment(suggestionList, Pos.TOP_LEFT); // necessary for layoutX/Y to apply

if (codeArea == null || suggestionList == null) return;

// Get the pixel position of the caret
int caretPos = codeArea.getCaretPosition();

try {
// Get the bounds of the caret in the editor
var caretBoundsOpt = codeArea.getCaretBounds();
if (caretBoundsOpt.isEmpty()) return;

var caretBounds = caretBoundsOpt.get();

// Convert local bounds of CodeArea caret to parent (StackPane) coordinates
var localToScene = codeArea.localToScene(caretBounds);
var sceneToParent = editorRoot.sceneToLocal(localToScene);

double x = localToScene.getMinX()+100;
double y = localToScene.getMaxY()+20;

suggestionList.setLayoutX(x);
suggestionList.setLayoutY(y);
} catch (Exception e) {
System.err.println("Failed to position suggestion box: " + e.getMessage());
}
}

private void acceptSelected() {
String selected = suggestionList.getSelectionModel().getSelectedItem();
if (selected != null) {
selected+=" ";
int caretPos = codeArea.getCaretPosition();
int start = caretPos - 1;
String text = codeArea.getText();
while (start >= 0 && Character.isLetterOrDigit(text.charAt(start))) start--;
start++;
codeArea.replaceText(start, caretPos, selected);
codeArea.moveTo(start + selected.length());
}
hideSuggestions();
codeArea.requestFocus();
}

private void showSuggestions() {
suggestionList.setVisible(true);
suggestionList.setManaged(true);
suggestionList.setOnMouseEntered(e ->{
suggestionList.setCursor(Cursor.DEFAULT);
suggestionList.requestFocus();
editorRoot.setMouseTransparent(false);
});
suggestionList.setOnMouseExited(e ->{
suggestionList.setCursor(Cursor.TEXT);
codeArea.requestFocus();
editorRoot.setMouseTransparent(true);
});

suggestionList.setCursor(Cursor.DEFAULT);
}

private void hideSuggestions() {
editorRoot.setCursor(Cursor.TEXT);
editorRoot.setMouseTransparent(true);
suggestionList.setVisible(false);
suggestionList.setManaged(false);
}
}
< /code>
fxml code: < /p>










Подробнее здесь: https://stackoverflow.com/questions/796 ... odearea-in