Class SwingUtils

java.lang.Object

uno.anahata.ai.swing.util.SwingUtils

public final class SwingUtils
extends Object

General Swing utility methods.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	SwingUtils.ScrollState<T>	A generic data class to hold the state of a scroll pane's viewport, anchored to a stable model object.

Method Summary

Modifier and Type	Method	Description
static <T> SwingUtils.ScrollState<T>	getScrollState(JScrollPane scrollPane, Function<Component, T> anchorExtractor)	Captures the precise scroll state of a JScrollPane.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

getScrollState

public static <T> SwingUtils.ScrollState<T> getScrollState(JScrollPane scrollPane,
 Function<Component, T> anchorExtractor)

Captures the precise scroll state of a JScrollPane. It identifies the component closest to the center of the viewport as the user's focus, extracts a stable anchor object from it using the provided function, and records the precise pixel offset.

Type Parameters:

T - The type of the anchor object.

Parameters:

scrollPane - The JScrollPane to inspect.

anchorExtractor - A function that takes a Component and returns a stable, non-UI anchor object (e.g., a data model object).

Returns:

A SwingUtils.ScrollState object, or null if the state could not be determined.