Add initial project structure with essential files including .gitignore, application resources, and various model and view components for the application. Implemented asynchronous parsing support and database structure checks.

view/componentspreview.h

@@ -0,0 +1,42 @@
+#ifndef COMPONENTSPREVIEW_H
+#define COMPONENTSPREVIEW_H
+
+#include <QWidget>
+#include <QVBoxLayout>
+#include <QGroupBox>
+#include <QComboBox>
+#include <QTableView>
+#include <QHBoxLayout>
+#include "../model/componenttablemodel.h"
+#include "freezetablewidget.h"
+
+class ComponentsPreview : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit ComponentsPreview(ComponentTableModel* model, QWidget *parent = nullptr);
+    
+    // Метод для обновления отображения
+    void updateView();
+    
+    // Метод для установки текущего варианта
+    void setCurrentVariant(const QString &variant);
+    
+signals:
+    void variantChanged(const QString& variant);
+    void componentSelected(int row);
+    void componentDoubleClicked(int row);
+
+private:
+    void setUp();
+    void setWidgets();
+    void setUpLayout();
+    void setUpConnections();
+    void updateVariantComboBox();
+
+    ComponentTableModel* m_model;
+    QComboBox* m_variantComboBox;
+    FreezeTableWidget* m_tableView;
+};
+
+#endif // COMPONENTSPREVIEW_H