Function _getMaxHeightFromTargetRectangle

docs/app/js/sanddance-app.js:32111–32124

* If max height is less than zero it returns the bounds height instead.

(targetRectangle, targetEdge, gapSpace, bounds, coverTarget)

/**
 * If max height is less than zero it returns the bounds height instead.
 */ function _getMaxHeightFromTargetRectangle(targetRectangle, targetEdge, gapSpace, bounds, coverTarget) {
    var maxHeight = 0;
    var directionalHint = DirectionalDictionary[targetEdge];
    // If cover target is set, then the max height should be calculated using the opposite of the target edge since
    // that's the direction that the callout will expand in.
    // For instance, if the directionalhint is bottomLeftEdge then the callout will position so it's bottom edge
    // is aligned with the bottom of the target and expand up towards the top of the screen and the calculated max height
    // is (bottom of target) - (top of screen) - gapSpace.
    var target = coverTarget ? directionalHint.targetEdge * -1 : directionalHint.targetEdge;
    if (target === (0, _positioningTypes.RectangleEdge).top) maxHeight = _getEdgeValue(targetRectangle, directionalHint.targetEdge) - bounds.top - gapSpace;
    else if (target === (0, _positioningTypes.RectangleEdge).bottom) maxHeight = bounds.bottom - _getEdgeValue(targetRectangle, directionalHint.targetEdge) - gapSpace;
    else maxHeight = bounds.bottom - targetRectangle.top - gapSpace;
    return maxHeight > 0 ? maxHeight : bounds.height;
}
function _positionElementRelative(props, elementToPosition, boundingRect, previousPositions) {
    var gap = props.gapSpace ? props.gapSpace : 0;
    var targetRect = _getTargetRect(boundingRect, props.target);