Function _flipToFit

docs/app/js/sanddance-app.js:31829–31872

* Attempts to move the rectangle through various sides of the target to find a place to fit. * If no fit is found, the original position should be returned.

(rect, target, bounding, positionData, gap)

 * Attempts to move the rectangle through various sides of the target to find a place to fit.
 * If no fit is found, the original position should be returned.
 */ function _flipToFit(rect, target, bounding, positionData, gap) {
    if (gap === void 0) gap = 0;
    var directions = [
        (0, _positioningTypes.RectangleEdge).left,
        (0, _positioningTypes.RectangleEdge).right,
        (0, _positioningTypes.RectangleEdge).bottom,
        (0, _positioningTypes.RectangleEdge).top, 
    ];
    // In RTL page, RectangleEdge.right has a higher priority than RectangleEdge.left, so the order should be updated.
    if ((0, _utilities.getRTL)()) {
        directions[0] *= -1;
        directions[1] *= -1;
    }
    var currentEstimate = rect;
    var currentEdge = positionData.targetEdge;
    var currentAlignment = positionData.alignmentEdge;
    // Keep switching sides until one is found with enough space.
    // If all sides don't fit then return the unmodified element.
    for(var i = 0; i < 4; i++){
        if (!_isEdgeInBounds(currentEstimate, bounding, currentEdge)) {
            directions.splice(directions.indexOf(currentEdge), 1);
            if (directions.length > 0) {
                if (directions.indexOf(currentEdge * -1) > -1) currentEdge = currentEdge * -1;
                else {
                    currentAlignment = currentEdge;
                    currentEdge = directions.slice(-1)[0];
                }
                currentEstimate = _estimatePosition(rect, target, {
                    targetEdge: currentEdge,
                    alignmentEdge: currentAlignment
                }, gap);
            }
        } else return {
            elementRectangle: currentEstimate,
            targetEdge: currentEdge,
            alignmentEdge: currentAlignment
        };
    }
    return {
        elementRectangle: rect,
        targetEdge: positionData.targetEdge,
        alignmentEdge: positionData.alignmentEdge
    };
}
/**
 * Flips only the alignment edge of an element rectangle. This is used instead of nudging the alignment edges
 * into position, when alignTargetEdge is specified.