func：替换添加所有页选项。

MainWidget.h

@@ -11,9 +11,17 @@
 #include "src/attribute_edit.h"
 
 struct SElement_t {
-    SElement_t(Element_t* e, const std::string& s);
-    Element_t*  ele{};
-    std::string str{};
+    SElement_t(Element_t* e, std::string& s);
+    Element_t*  ele;
+    std::string str;
+};
+
+enum ReplaceArea { AREA_SELECT, AREA_ALL_PAGE, AREA_CUR_PAGE, AREA_ALL };
+
+struct OperElement {
+    OperElement(Element_t* ele, int row);
+    Element_t* element_{};
+    int        row_{0};
 };
 
 QT_BEGIN_NAMESPACE
@@ -37,7 +45,7 @@ public:
 
 private:
     void read(const QString& file_path);
-    void search();
+    void search(const QString& key);
     void item_changed_handle(QTableWidgetItem* item);
     void save();
     void copy_select_line();
@@ -60,6 +68,10 @@ protected:
     void keyPressEvent(QKeyEvent* event);
     void replace_str(const QString& pre, const QString& after, Element_t* ele);
     void replace_str(Element_t* ele, const QString& rg, const QString& after);
+
+private:
+    void get_related_elements(std::vector<OperElement*>& out, ReplaceArea area);
+
 private:
     Element_t*        get_element_by_key(const QString& key);
     Element_t*        get_element_by_row(int row);