ketraterm-ui-swing/io.github.ketraterm.ui.swing.api/SwingScrollbarAdapter

SwingScrollbarAdapter

class SwingScrollbarAdapter(scrollbar: JScrollBar) : TerminalViewportListener

Bridges a top-origin Swing scrollbar to the shared terminal viewport.

The scrollbar retains pixel-scale coordinates, allowing its thumb to move continuously during direct manipulation. Each thumb position maps to an integer top row, which is applied immediately with no easing lag. Terminal publications do not overwrite the host-owned thumb coordinate during a drag, and release is already row-aligned.

Parameters

scrollbar

host-owned vertical scrollbar.

Constructors

SwingScrollbarAdapter

constructor(scrollbar: JScrollBar)

Functions

attach

fun attach(viewportScroller: SwingScrollbarScroller)

Attaches the terminal controlled by this adapter.

viewportChanged

open override fun viewportChanged(historySize: Int, scrollbackOffset: Double, renderOffset: Int, visibleRows: Int, requestedRows: Int)

Reports the latest terminal-native viewport coordinates.

viewportStateChanged

open override fun viewportStateChanged(state: TerminalViewportState)

Reports the full viewport snapshot, including pixel scroll range.