public String getPreviousStage(String currStage) {
if (currStage == null) {
return null;
}
int ind = currStage.indexOf(":");
Version v = new Version(currStage.substring(0, ind));
int lind = Integer.parseInt(currStage.substring(ind + 1));
java.util.List<WhatsNewItem> its = this.items.get(v);
if (its == null) {
return null;
}
lind--;
if (lind > -1) {
return v.getVersion() + ":" + lind;
}
Version p = this.items.lowerKey(v);
if (p == null) {
return null;
}
java.util.List<WhatsNewItem> pits = this.items.get(p);
if (pits != null) {
return p.getVersion() + ":" + (pits.size() - 1);
}
return null;
}
public String getNextStage(String currStage) {
if (currStage == null) {
return this.getStartStage();
}
int ind = currStage.indexOf(":");
Version v = new Version(currStage.substring(0, ind));
int lind = Integer.parseInt(currStage.substring(ind + 1));
java.util.List<WhatsNewItem> its = this.items.get(v);
if (its == null) {
return null;
}
lind++;
if (lind <= (its.size() - 1)) {
return v.getVersion() + ":" + lind;
}
Version n = this.items.higherKey(v);
if (n == null) {
return null;
}
java.util.List<WhatsNewItem> nits = this.items.get(n);
if (nits != null) {
return n.getVersion() + ":0";
}
return null;
}