file/folder restructuring

undo/comboaction.cpp

@@ -0,0 +1,40 @@
+#include "comboaction.h"
+
+ComboAction::ComboAction() {}
+
+ComboAction::~ComboAction() {
+    for (int i=0;i<commands.size();i++) {
+        delete commands.at(i);
+    }
+}
+
+void ComboAction::undo() {
+    for (int i=commands.size()-1;i>=0;i--) {
+        commands.at(i)->undo();
+    }
+    for (int i=0;i<post_commands.size();i++) {
+        post_commands.at(i)->undo();
+    }
+}
+
+void ComboAction::redo() {
+    for (int i=0;i<commands.size();i++) {
+        commands.at(i)->redo();
+    }
+    for (int i=0;i<post_commands.size();i++) {
+        post_commands.at(i)->redo();
+    }
+}
+
+void ComboAction::append(QUndoCommand* u) {
+    commands.append(u);
+}
+
+void ComboAction::appendPost(QUndoCommand* u) {
+  post_commands.append(u);
+}
+
+bool ComboAction::hasActions()
+{
+  return commands.size() > 0;
+}