added select channel dialog

src/widgets/notebook.hpp

@@ -14,6 +14,61 @@ namespace widgets {
 
 class Window;
 
+class Notebook2 : public BaseWidget
+{
+    Q_OBJECT
+
+public:
+    explicit Notebook2(QWidget *parent);
+
+    NotebookTab2 *addPage(QWidget *page, bool select = false);
+    void removePage(QWidget *page);
+    void removeCurrentPage();
+
+    int indexOf(QWidget *page) const;
+    void select(QWidget *page);
+    void selectIndex(int index);
+    void selectNextTab();
+    void selectPreviousTab();
+
+    int getPageCount() const;
+    int getSelectedIndex() const;
+    QWidget *getSelectedPage() const;
+
+    QWidget *tabAt(QPoint point, int &index, int maxWidth = 2000000000);
+    void rearrangePage(QWidget *page, int index);
+
+    bool getAllowUserTabManagement() const;
+    void setAllowUserTabManagement(bool value);
+
+    bool getShowAddButton() const;
+    void setShowAddButton(bool value);
+
+protected:
+    virtual void scaleChangedEvent(float scale) override;
+    virtual void resizeEvent(QResizeEvent *) override;
+    virtual void paintEvent(QPaintEvent *) override;
+
+private:
+    struct Item {
+        NotebookTab2 *tab;
+        QWidget *page;
+    };
+
+    QList<Item> items;
+    QWidget *selectedPage = nullptr;
+
+    NotebookButton addButton;
+
+    bool allowUserTabManagement = false;
+    bool showAddButton = false;
+    int lineY = 20;
+
+    void performLayout(bool animate = true);
+
+    NotebookTab2 *getTabFromPage(QWidget *page);
+};
+
 class Notebook : public BaseWidget
 {
     Q_OBJECT