@Override
protected String compute() {
final PortletColumnElement column = (PortletColumnElement) context(Element.class);
final PortletLayoutElement parentLayout = column.nearest(PortletLayoutElement.class);
final LayoutTplElement layoutTpl = column.nearest(LayoutTplElement.class);
int weightSum = 0;
ElementList<PortletColumnElement> portletColumns = parentLayout.getPortletColumns();
for (PortletColumnElement col : portletColumns) {
if (col != column) {
weightSum += col.getWeight().content().intValue();
}
}
final int fullWeight = column.getFullWeight().content().intValue();
int initialWeight = layoutTpl.getBootstrapStyle().content() ? 3 : 25;
if (weightSum >= 0 && weightSum < fullWeight) {
initialWeight = fullWeight - weightSum;
} else if (weightSum == fullWeight) {
// the index of last valid column is portletColumns.size() - 2
// because portletColumns().size() -1 is the new inserted column
PortletColumnElement lastValidColumn = portletColumns.get(portletColumns.size() - 2);
int lastValidWeight = lastValidColumn.getWeight().content().intValue();
if (lastValidWeight > 1) {
initialWeight = lastValidWeight / 2;
lastValidWeight = lastValidWeight - initialWeight;
lastValidColumn.setWeight(lastValidWeight);
}
}
return String.valueOf(initialWeight);
}
