From e5ef064c0e4e2ec9356ab2a66bc44f4e1add8f78 Mon Sep 17 00:00:00 2001
From: Illya Yalovoy <yalovoy@gmail.com>
Date: Sat, 19 Dec 2009 13:40:22 +0000
Subject: [PATCH] refs #889

---
 src/gui/FWCmdBasic.cpp | 28 +++++++++++++++++++++++++++-
 src/gui/FWCmdBasic.h   | 19 ++++++++++++++++---
 2 files changed, 43 insertions(+), 4 deletions(-)

diff --git a/src/gui/FWCmdBasic.cpp b/src/gui/FWCmdBasic.cpp
index 8ce7a6576..ef870b771 100644
--- a/src/gui/FWCmdBasic.cpp
+++ b/src/gui/FWCmdBasic.cpp
@@ -24,6 +24,7 @@
 */
 
 #include "FWCmdBasic.h"
+#include <QDebug>
 
 using namespace libfwbuilder;
 
@@ -34,10 +35,35 @@ FWCmdBasic::FWCmdBasic(ProjectPanel *project)
 
 FWObject* FWCmdBasic::getObject()
 {
-    return getObject(id);
+    return getObject(obj_id);
 }
 
 FWObject* FWCmdBasic::getObject(int id)
 {
     return project->db()->findInIndex(id);
 }
+
+bool FWCmdBasic::mergeWith(const QUndoCommand *other)
+{
+    qDebug() << "FWCmdBasic::mergeWith(const QUndoCommand *other)";
+    qDebug() << "cmd:" << other->text();
+
+    const FWCmdTerm* term = dynamic_cast<const FWCmdTerm*> (other);
+
+    return term != 0;
+}
+
+
+
+void undoAndRemoveLastCommand(QUndoStack* undoStack)
+{
+    qDebug() << "undoAndRemoveLastCommand(QUndoStack undoStack)";
+    undoStack->undo();
+    qDebug() << "count:" << undoStack->count();
+    if (undoStack->count() == 1) {
+        undoStack->clear();
+    } else {
+        FWCmdTerm* cmd = new FWCmdTerm();
+        undoStack->push(cmd);
+    }
+}
diff --git a/src/gui/FWCmdBasic.h b/src/gui/FWCmdBasic.h
index 44de36c99..cbcc646ce 100644
--- a/src/gui/FWCmdBasic.h
+++ b/src/gui/FWCmdBasic.h
@@ -27,6 +27,8 @@
 #define FWCMDBASIC_H
 
 #include <QUndoCommand>
+#include <QUndoStack>
+#include <QDebug>
 
 #include "ProjectPanel.h"
 
@@ -34,18 +36,29 @@
 
 class FWCmdBasic : public QUndoCommand
 {
-    int id;
+    int obj_id;
 protected:
 
     ProjectPanel *project;
 
 public:
     FWCmdBasic(ProjectPanel *project);
-    int objectId() {return id;}
-    void setObject(libfwbuilder::FWObject *object) {id = object->getId();}
+    int objectId() {return obj_id;}
+    void setObject(libfwbuilder::FWObject *object) {obj_id = object->getId();}
     libfwbuilder::FWObject* getObject();
     libfwbuilder::FWObject* getObject(int id);
+    int id() const {return 1;}
+    bool mergeWith(const QUndoCommand *other);
 
 };
 
+class FWCmdTerm : public QUndoCommand
+{
+public:
+    FWCmdTerm() : QUndoCommand() {setText("Terminator");}
+    int id() const {return 1;}
+};
+
+void undoAndRemoveLastCommand(QUndoStack* undoStack);
+
 #endif // FWCMDBASIC_H