DomUI

SplitterPanel

SplitterPanel puts two panels either side of a bar the user can drag.

Div left = new Div();
Div right = new Div();

SplitterPanel split = new SplitterPanel(left, right, true);   // true: a vertical bar
split.setHeight("300px");
split.setMinASize(100);
cp.add(split);

The two directions

The boolean is the orientation of the bar, not of the split. true is a vertical bar, and therefore two panels side by side; false is a horizontal bar, and therefore one panel above the other. It is easy to read the wrong way round.

vertical The bar The panels Css
true vertical A left, B right ui-splt-vert, ui-splt-left, ui-splt-right
false horizontal A on top, B below ui-splt-horz, ui-splt-top, ui-splt-bottom

Limits

Method What it does
setMinASize(int) / setMaxASize(int) how far the bar may move, in pixels, for panel A
setMinBSize(int) / setMaxBSize(int) the same for panel B
setClosableToPerc(int) below this percentage the panel snaps shut
getPanelA() / getPanelB() the two panels

Give the splitter a height. It has none of its own, and without one there is nothing to divide - the panels collapse to nothing.

The dragging itself is done in the browser by a jQuery splitter; the server is not involved, so moving the bar costs no round trip and the position is not remembered across a page load.

Last modified: 2026/09/05