Fix undo and redo broken by a precondition.

This commit is contained in:
sk89q 2014-07-27 22:04:28 -07:00
parent 98e55bede0
commit 8ce757631a

View File

@ -198,7 +198,7 @@ public class LocalSession {
* @param player the player * @param player the player
* @return whether anything was undone * @return whether anything was undone
*/ */
public EditSession undo(BlockBag newBlockBag, LocalPlayer player) { public EditSession undo(@Nullable BlockBag newBlockBag, LocalPlayer player) {
return undo(newBlockBag, (Player) player); return undo(newBlockBag, (Player) player);
} }
@ -209,8 +209,7 @@ public class LocalSession {
* @param player the player * @param player the player
* @return whether anything was undone * @return whether anything was undone
*/ */
public EditSession undo(BlockBag newBlockBag, Player player) { public EditSession undo(@Nullable BlockBag newBlockBag, Player player) {
checkNotNull(newBlockBag);
checkNotNull(player); checkNotNull(player);
--historyPointer; --historyPointer;
if (historyPointer >= 0) { if (historyPointer >= 0) {
@ -234,7 +233,7 @@ public class LocalSession {
* @param player the player * @param player the player
* @return whether anything was redone * @return whether anything was redone
*/ */
public EditSession redo(BlockBag newBlockBag, LocalPlayer player) { public EditSession redo(@Nullable BlockBag newBlockBag, LocalPlayer player) {
return redo(newBlockBag, (Player) player); return redo(newBlockBag, (Player) player);
} }
@ -245,8 +244,7 @@ public class LocalSession {
* @param player the player * @param player the player
* @return whether anything was redone * @return whether anything was redone
*/ */
public EditSession redo(BlockBag newBlockBag, Player player) { public EditSession redo(@Nullable BlockBag newBlockBag, Player player) {
checkNotNull(newBlockBag);
checkNotNull(player); checkNotNull(player);
if (historyPointer < history.size()) { if (historyPointer < history.size()) {
EditSession editSession = history.get(historyPointer); EditSession editSession = history.get(historyPointer);