Initial project

src/main/java/com/imyeyu/fx/ui/components/SelectableLabel.java

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+package com.imyeyu.fx.ui.components;
+
+import com.imyeyu.fx.ui.TimiFXUI;
+import com.imyeyu.java.ref.Ref;
+import com.sun.javafx.scene.control.skin.Utils;
+import javafx.application.Platform;
+import javafx.beans.property.ObjectProperty;
+import javafx.beans.property.SimpleObjectProperty;
+import javafx.collections.ListChangeListener;
+import javafx.scene.Cursor;
+import javafx.scene.Group;
+import javafx.scene.Node;
+import javafx.scene.control.ScrollPane;
+import javafx.scene.control.Skin;
+import javafx.scene.control.TextArea;
+import javafx.scene.control.skin.TextAreaSkin;
+import javafx.scene.layout.Region;
+import javafx.scene.paint.Paint;
+import javafx.scene.text.Text;
+import javafx.scene.text.TextAlignment;
+
+import java.util.List;
+
+/**
+ * 可选中的标签组件，实际上是无样式文本域，此组件适应布局最大宽度
+ *
+ * @author 夜雨
+ * @since 2022-01-29 01:24
+ */
+public class SelectableLabel extends TextArea implements TimiFXUI, TimiFXUI.Colorful {
+
+	private static final String STYLE_CLASS = "selectable-label";
+
+	private final ObjectProperty<Paint> textFillProperty;
+	private final ObjectProperty<TextAlignment> textAlignmentProperty;
+
+	/** 默认构造 */
+	public SelectableLabel() {
+		this("");
+	}
+
+	/**
+	 * 构造器
+	 *
+	 * @param text 文本内容
+	 */
+	public SelectableLabel(String text) {
+		super(text);
+
+		textFillProperty = new SimpleObjectProperty<>(BLACK);
+		textAlignmentProperty = new SimpleObjectProperty<>(TextAlignment.LEFT);
+
+		setCursor(Cursor.TEXT);
+		setEditable(false);
+		setWrapText(true);
+		setMaxWidth(Double.MAX_VALUE);
+		setMinSize(Double.MIN_VALUE, Double.MIN_VALUE);
+		setPrefHeight(0);
+		setPrefSize(0, 0);
+		getStyleClass().setAll(STYLE_CLASS, CSS.MINECRAFT);
+
+		focusedProperty().addListener((obs, o, isFocused) -> {
+			if (!isFocused) {
+				deselect();
+			}
+		});
+	}
+
+	@Override
+	protected Skin<?> createDefaultSkin() {
+		Skin<?> defaultSkin = super.createDefaultSkin();
+		if (defaultSkin instanceof TextAreaSkin skin) {
+			try {
+				ScrollPane sp = Ref.getFieldValue(skin, "scrollPane", ScrollPane.class);
+				sp.setVbarPolicy(ScrollPane.ScrollBarPolicy.NEVER);
+				if (sp.getContent() instanceof Region region) {
+					region.heightProperty().addListener((obs, o, newHeight) -> Platform.runLater(() -> {
+						// 需要 runLater，因为是 Region 适应 Skin 变化
+						setPrefHeight(newHeight.doubleValue());
+					}));
+				}
+				Group paragraphNodes = Ref.getFieldValue(skin, "paragraphNodes", Group.class);
+				paragraphNodes.getChildren().addListener((ListChangeListener<Node>) c -> {
+					if (c.next()) {
+						if (c.wasAdded()) {
+							bindTextStyle(c.getAddedSubList());
+						}
+					}
+				});
+				bindTextStyle(paragraphNodes.getChildren());
+				widthProperty().addListener((obs, oldValue, newValue) -> {
+					if (oldValue.doubleValue() < newValue.doubleValue()) {
+						if (paragraphNodes.getChildren().get(0) instanceof Text text) {
+							setPrefHeight(Utils.computeTextHeight(getFont(), getText(), getWidth(), text.getBoundsType()));
+						}
+					}
+				});
+			} catch (IllegalAccessException e) {
+				throw new RuntimeException(e);
+			}
+		}
+		return defaultSkin;
+	}
+
+	/**
+	 * 绑定文本样式
+	 *
+	 * @param list 文本节点，必须是 {@link Text}
+	 */
+	private void bindTextStyle(List<? extends Node> list) {
+		for (int i = 0; i < list.size(); i++) {
+			if (list.get(i) instanceof Text text) {
+				text.fillProperty().bind(textFillProperty);
+				text.textAlignmentProperty().bind(textAlignmentProperty);
+			}
+		}
+	}
+
+	/**
+	 * 设置字体颜色
+	 *
+	 * @param textFill 字体颜色
+	 */
+	public void setTextFill(Paint textFill) {
+		this.textFillProperty.set(textFill);
+	}
+
+	/**
+	 * 获取字体颜色
+	 *
+	 * @return 字体颜色
+	 */
+	public Paint getTextFill() {
+		return textFillProperty.get();
+	}
+
+	/**
+	 * 获取字体颜色绑定
+	 *
+	 * @return 字体颜色绑定
+	 */
+	public ObjectProperty<Paint> textFillProperty() {
+		return textFillProperty;
+	}
+
+	/**
+	 * 设置文本对齐方式
+	 *
+	 * @param textAlignment 文本对齐方式
+	 */
+	public void setTextAlignment(TextAlignment textAlignment) {
+		this.textAlignmentProperty.set(textAlignment);
+	}
+
+	/**
+	 * 获取文本对齐方式
+	 *
+	 * @return 文本对齐方式
+	 */
+	public TextAlignment getTextAlignment() {
+		return textAlignmentProperty.get();
+	}
+
+	/**
+	 * 获取文本对齐方式绑定
+	 *
+	 * @return 文本对齐方式绑定
+	 */
+	public ObjectProperty<TextAlignment> textAlignmentProperty() {
+		return textAlignmentProperty;
+	}
+}