Undo and Redo command

mainwindow.cpp

@@ -1,15 +1,49 @@
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
 #include "path.h"
-
+#include "Undo.h"
 #include <QFileDialog>
 #include <QMessageBox>
+#include <QLineEdit>
+#include <QTimer>
 
 MainWindow::MainWindow(QWidget *parent)
     : QMainWindow(parent)
     , ui(new Ui::MainWindow)
+    , undoStack(new QUndoStack(this))
 {
     ui->setupUi(this);
+
+
+    connect(ui->titleEdit, &QLineEdit::editingFinished, this, [this]() {
+        static QString previousText;
+        QString currentText = ui->titleEdit->text();
+        if(previousText != currentText) {
+            undoStack->push(new LineEditCommand(ui->titleEdit, previousText, currentText));
+            previousText = currentText;
+        }
+    });
+
+    connect(ui->locEdit, &QLineEdit::editingFinished, this, [this]() {
+        static QString previousText;
+        QString currentText = ui->locEdit->text();
+        if(previousText != currentText) {
+            undoStack->push(new LineEditCommand(ui->locEdit, previousText, currentText));
+            previousText = currentText;
+        }
+    });
+
+    connect(ui->imagePath, &QLineEdit::editingFinished, this, [this]() {
+        static QString previousText;
+        QString currentText = ui->imagePath->text();
+        if(previousText != currentText) {
+            undoStack->push(new LineEditCommand(ui->imagePath, previousText, currentText));
+            previousText = currentText;
+        }
+    });
+
+    connect(ui->actionEditUndo, &QAction::triggered, undoStack, &QUndoStack::undo);
+    connect(ui->actionEditRedo, &QAction::triggered, undoStack, &QUndoStack::redo);
 }
 
 MainWindow::~MainWindow()
@@ -136,4 +170,3 @@ void MainWindow::on_actionopenFile_triggered()
 {
     this->loadPath();
 }
-