ChartAnnotation.java

/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
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 * (C) Copyright 2009-2024, Arnaud Roques
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 * Project Info:  https://plantuml.com
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 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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 * Original Author:  David Fyfe
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 */
package net.sourceforge.plantuml.chart;

/**
 * Represents an annotation on a chart at a specific point.
 * Annotations display text labels at specific data coordinates with optional arrows.
 */
public class ChartAnnotation {

	private final String text;
	private final Object xPosition;  // Can be String (label) or Double (numeric)
	private final double yPosition;
	private final boolean showArrow;

	/**
	 * Creates a new chart annotation.
	 *
	 * @param text the annotation text to display
	 * @param xPosition the x-axis position (String for categorical, Double for numeric)
	 * @param yPosition the y-axis position (numeric value)
	 * @param showArrow whether to show an arrow pointing to the data point
	 */
	public ChartAnnotation(String text, Object xPosition, double yPosition, boolean showArrow) {
		this.text = text;
		this.xPosition = xPosition;
		this.yPosition = yPosition;
		this.showArrow = showArrow;
	}

	/**
	 * Gets the annotation text.
	 *
	 * @return the annotation text
	 */
	public String getText() {
		return text;
	}

	/**
	 * Gets the x-axis position.
	 *
	 * @return the x-axis position (String for categorical, Double for numeric)
	 */
	public Object getXPosition() {
		return xPosition;
	}

	/**
	 * Gets the y-axis position.
	 *
	 * @return the y-axis position as a numeric value
	 */
	public double getYPosition() {
		return yPosition;
	}

	/**
	 * Checks whether this annotation should display an arrow.
	 *
	 * @return true if an arrow should be shown, false otherwise
	 */
	public boolean isShowArrow() {
		return showArrow;
	}
}