/** have a look at the supplied editors, find which properties are common */
protected static MWC.GUI.Tools.SubjectAction[] getUndoableActionsFor(final Editable[] editables) {
MWC.GUI.Tools.SubjectAction[] res = null;
final MWC.GUI.Tools.SubjectAction[] demo = new MWC.GUI.Tools.SubjectAction[] {};
// right, get the first set of properties
if (editables.length > 0) {
final Editable first = editables[0];
final EditorType firstInfo = first.getInfo();
if (firstInfo != null) {
res = firstInfo.getUndoableActions();
// only continue if there are any methods to compare against
if (res != null) {
// right, are there any more?
if (editables.length > 1) {
// pass through the others, finding the common ground
for (int cnt = 1; cnt < editables.length; cnt++) {
final Editable thisE = editables[cnt];
// get its props
final EditorType thisEditor = thisE.getInfo();
// do we have an editor?
if (thisEditor != null) {
final MWC.GUI.Tools.SubjectAction[] newSet = thisEditor.getUndoableActions();
// find the common ones
res = (MWC.GUI.Tools.SubjectAction[]) getIntersectionFor(res, newSet, demo);
}
}
}
}
}
}
return res;
}
