ImageJ FiJi : retrieving indices or names of multiple selected ROIs

multiple_ROIs_helper.ijm

//returns an array of selected ROIs numeric indices 
function getSelectedROIsIndexes() {
  //calls existing java method, then parse it to an ImageJ Macro langage Array
	rois = eval("script","java.util.Arrays.toString(RoiManager.getInstance().getSelectedIndexes())");
	rois = substring(rois, indexOf(rois, "[")+1, lastIndexOf(rois, "]"));
	rois = split(rois, ",");
	selectedRois = newArray(rois.length);
	
	for (i = 0; i < rois.length; i++) {
		selectedRois[i] = parseInt(rois[i]);
	}
	return selectedRois;
}


//leverage previously created function to return an array of selected ROIs names
function getSelectedROIsNames() {
	indexes = getSelectedROIsIndexes();
	names = newArray(indexes.length);
	for (i = 0; i < indexes.length; i++) {
		names[i] = RoiManager.getName(indexes[i]);
	}
	return names;
}

demo code

names = getSelectedROIsNames();
for (i = 0; i < names.length; i++) {
    print(names[i]);
}