Changeset 770138 for molecuilder/src/Actions/ActionHistory.cpp

Timestamp:

Mar 26, 2010, 3:13:31 PM (15 years ago)

Author:

Tillmann Crueger <crueger@…>

Children:

0f7883, 71910a, abd4a1

Parents:

cbc639

Message:

Added mechanism that deactivates undo and redo menupoint if not applicable

File:

• molecuilder/src/Actions/ActionHistory.cpp (modified) (3 diffs)

molecuilder/src/Actions/ActionHistory.cpp

@@ -34 +34 @@
   Action::state_ptr oldState = elem.action->redo(elem.state);
   history.push_back(HistoryElement(elem.action,oldState));
+}
+
+bool ActionHistory::hasUndo(){
+  return history.size()>0;
+}
+
+bool ActionHistory::hasRedo(){
+  return yrotsih.size()>0;
 }
 
@@ -73 +81 @@
 }
 
+bool ActionHistory::UndoAction::isActive(){
+  return hist->hasUndo();
+}
+
 Action::state_ptr ActionHistory::UndoAction::performCall(){
   hist->undoLast();
@@ -103 +115 @@
 }
 
+bool ActionHistory::RedoAction::isActive(){
+  return hist->hasRedo();
+}
+
 Action::state_ptr ActionHistory::RedoAction::performCall(){
   hist->redoLast();