in cell/src/main/java/jetbrains/jetpad/cell/toDom/BaseCellMapper.java [169:195]
private void applyStyle(boolean selected, boolean focusHighlighted, Color background) {
updateCssStyle(CSS.outlined(), focusHighlighted && !isLeaf() && !selected);
updateCssStyle(CSS.selected(), selected);
updateCssStyle(CSS.paired(), getSource().get(Cell.PAIR_HIGHLIGHTED));
updateCssStyle(CSS.link(), getSource().get(Cell.LINK));
String backgroundColor = null;
if (isLeaf() && focusHighlighted) {
backgroundColor = CSS.currentHighlightColor();
} else if (background != null) {
backgroundColor = background.toCssColor();
}
String underline = getSource().get(Cell.LINK) && getSource().get(Cell.HOVERED) ? CSS.blueUnderline()
: getSource().get(Cell.RED_UNDERLINE) ? CSS.redUnderline()
: getSource().get(Cell.YELLOW_UNDERLINE) ? CSS.yellowUnderline() : null;
applyBackground(backgroundColor, underline);
Style style = getTarget().getStyle();
Color borderColor = getSource().get(Cell.BORDER_COLOR);
style.setBorderStyle(borderColor == null ? Style.BorderStyle.NONE : Style.BorderStyle.SOLID);
style.setBorderWidth(borderColor == null ? 0 : 1, Style.Unit.PX);
style.setBorderColor(borderColor == null ? null : borderColor.toCssColor());
updateCssStyle(CSS.hidden(), !getSource().get(Cell.VISIBLE));
updateCssStyle(CSS.hasShadow(), getSource().get(Cell.HAS_SHADOW));
}