private void updateStyleInSelection(StyleInfo mixin) {
IndexRange selection = area.getSelection();
if (selection.getLength() != 0) {
StyleSpans<StyleInfo> styles = area.getStyleSpans(selection);
StyleSpans<StyleInfo> newStyles = styles.mapStyles(style -> style.updateWith(mixin));
area.setStyleSpans(selection.getStart(), newStyles);
}
}
@Override
public void start(Stage primaryStage) {
CheckBox wrapToggle = new CheckBox("Wrap");
wrapToggle.setSelected(true);
area.wrapTextProperty().bind(wrapToggle.selectedProperty());
Button undoBtn = createButton("undo", () -> area.undo());
Button redoBtn = createButton("redo", () -> area.redo());
Button cutBtn = createButton("cut", () -> area.cut());
Button copyBtn = createButton("copy", () -> area.copy());
Button pasteBtn = createButton("paste", () -> area.paste());
Button boldBtn = createButton("bold", () -> toggleBold());
Button italicBtn = createButton("italic", () -> toggleItalic());
Button underlineBtn = createButton("underline", () -> toggleUnderline());
Button strikeBtn = createButton("strikethrough", () -> toggleStrikethrough());
ComboBox<Integer> sizeCombo =
new ComboBox<>(
FXCollections.observableArrayList(
5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 20, 22, 24, 28, 32, 36, 40, 48, 56, 64,
72));
sizeCombo.getSelectionModel().select(Integer.valueOf(12));
ComboBox<String> familyCombo = new ComboBox<>(FXCollections.observableList(Font.getFamilies()));
familyCombo.getSelectionModel().select("Serif");
ColorPicker textColorPicker = new ColorPicker(Color.BLACK);
ColorPicker backgroundColorPicker = new ColorPicker();
sizeCombo.setOnAction(evt -> updateFontSize(sizeCombo.getValue()));
familyCombo.setOnAction(evt -> updateFontFamily(familyCombo.getValue()));
textColorPicker.valueProperty().addListener((o, old, color) -> updateTextColor(color));
backgroundColorPicker
.valueProperty()
.addListener((o, old, color) -> updateBackgroundColor(color));
undoBtn.disableProperty().bind(Bindings.not(area.undoAvailableProperty()));
redoBtn.disableProperty().bind(Bindings.not(area.redoAvailableProperty()));
BooleanBinding selectionEmpty =
new BooleanBinding() {
{
bind(area.selectionProperty());
}
@Override
protected boolean computeValue() {
return area.getSelection().getLength() == 0;
}
};
cutBtn.disableProperty().bind(selectionEmpty);
copyBtn.disableProperty().bind(selectionEmpty);
area.beingUpdatedProperty()
.addListener(
(o, old, beingUpdated) -> {
if (!beingUpdated) {
boolean bold, italic, underline, strike;
Integer fontSize;
String fontFamily;
Color textColor;
Color backgroundColor;
IndexRange selection = area.getSelection();
if (selection.getLength() != 0) {
StyleSpans<StyleInfo> styles = area.getStyleSpans(selection);
bold = styles.styleStream().anyMatch(s -> s.bold.orElse(false));
italic = styles.styleStream().anyMatch(s -> s.italic.orElse(false));
underline = styles.styleStream().anyMatch(s -> s.underline.orElse(false));
strike = styles.styleStream().anyMatch(s -> s.strikethrough.orElse(false));
int[] sizes =
styles
.styleStream()
.mapToInt(s -> s.fontSize.orElse(-1))
.distinct()
.toArray();
fontSize = sizes.length == 1 ? sizes[0] : -1;
String[] families =
styles
.styleStream()
.map(s -> s.fontFamily.orElse(null))
.distinct()
.toArray(i -> new String[i]);
fontFamily = families.length == 1 ? families[0] : null;
Color[] colors =
styles
.styleStream()
.map(s -> s.textColor.orElse(null))
.distinct()
.toArray(i -> new Color[i]);
textColor = colors.length == 1 ? colors[0] : null;
Color[] backgrounds =
styles
.styleStream()
.map(s -> s.backgroundColor.orElse(null))
.distinct()
.toArray(i -> new Color[i]);
backgroundColor = backgrounds.length == 1 ? backgrounds[0] : null;
} else {
int p = area.getCurrentParagraph();
int col = area.getCaretColumn();
StyleInfo style = area.getStyleAtPosition(p, col);
bold = style.bold.orElse(false);
italic = style.italic.orElse(false);
underline = style.underline.orElse(false);
strike = style.strikethrough.orElse(false);
fontSize = style.fontSize.orElse(-1);
fontFamily = style.fontFamily.orElse(null);
textColor = style.textColor.orElse(null);
backgroundColor = style.backgroundColor.orElse(null);
}
updatingToolbar.suspendWhile(
() -> {
if (bold) {
if (!boldBtn.getStyleClass().contains("pressed")) {
boldBtn.getStyleClass().add("pressed");
}
} else {
boldBtn.getStyleClass().remove("pressed");
}
if (italic) {
if (!italicBtn.getStyleClass().contains("pressed")) {
italicBtn.getStyleClass().add("pressed");
}
} else {
italicBtn.getStyleClass().remove("pressed");
}
if (underline) {
if (!underlineBtn.getStyleClass().contains("pressed")) {
underlineBtn.getStyleClass().add("pressed");
}
} else {
underlineBtn.getStyleClass().remove("pressed");
}
if (strike) {
if (!strikeBtn.getStyleClass().contains("pressed")) {
strikeBtn.getStyleClass().add("pressed");
}
} else {
strikeBtn.getStyleClass().remove("pressed");
}
if (fontSize != -1) {
sizeCombo.getSelectionModel().select(fontSize);
} else {
sizeCombo.getSelectionModel().clearSelection();
}
if (fontFamily != null) {
familyCombo.getSelectionModel().select(fontFamily);
} else {
familyCombo.getSelectionModel().clearSelection();
}
if (textColor != null) {
textColorPicker.setValue(textColor);
}
backgroundColorPicker.setValue(backgroundColor);
});
}
});
HBox panel1 = new HBox(3.0);
HBox panel2 = new HBox(3.0);
panel1
.getChildren()
.addAll(
wrapToggle,
undoBtn,
redoBtn,
cutBtn,
copyBtn,
pasteBtn,
boldBtn,
italicBtn,
underlineBtn,
strikeBtn);
panel2.getChildren().addAll(sizeCombo, familyCombo, textColorPicker, backgroundColorPicker);
VBox vbox = new VBox();
VBox.setVgrow(area, Priority.ALWAYS);
vbox.getChildren().addAll(panel1, panel2, area);
Scene scene = new Scene(vbox, 600, 400);
scene.getStylesheets().add(RichText.class.getResource("rich-text.css").toExternalForm());
primaryStage.setScene(scene);
area.requestFocus();
primaryStage.setTitle("Rich Text Demo");
primaryStage.show();
}