func：添加导入导出数据（未完成）。

MainWidget.cpp

@@ -3,6 +3,7 @@
 #include <QSettings>
 #include <QFile>
 #include <QKeyEvent>
+#include "src/data_edit.h"
 #include "./ui_MainWidget.h"
 
 constexpr std::size_t g_OnePage = 100;
@@ -28,6 +29,9 @@ MainWidget::MainWidget(QWidget* parent) : QWidget(parent), ui(new Ui::MainWidget
     ui->btnSave->setEnabled(false);
     ui->edAllPage->setEnabled(false);
     ui->cbCaseSensitive->setChecked(false);
+    ui->btnRead->setFixedWidth(100);
+    ui->btnSave->setFixedWidth(100);
+    ui->btnExit->setFixedWidth(100);
 
     connect(ui->btnSelectFile, &QPushButton::clicked, this, [&]() {
         QString file = CUtil::select_file(this, u8"请选择xml文件", u8"XML(*.xml);;所有文件 (*)");
@@ -42,10 +46,21 @@ MainWidget::MainWidget(QWidget* parent) : QWidget(parent), ui(new Ui::MainWidget
     connect(ui->btnSave, &QPushButton::clicked, this, [&]() { save(); });
     connect(ui->btnExit, &QPushButton::clicked, this, [&]() { QApplication::exit(0); });
     connect(ui->btnReset, &QPushButton::clicked, this, &MainWidget::reset);
+    connect(ui->btnExport, &QPushButton::clicked, this, &MainWidget::copy_multi_data);
     connect(ui->btnPagePre, &QPushButton::clicked, this, [&]() {
         unsigned int cur = ui->edCurPage->text().toUInt();
         push_content(current_, cur - 1);
     });
+    connect(ui->btnImport, &QPushButton::clicked, this, [&]() {
+        CDataEdit edit;
+        edit.is_import_ = true;
+        edit.exec();
+        if (edit.is_import_sucess_) {
+            CUtil::msg(this, u8"导入成功");
+        } else {
+            CUtil::msg(this, u8"导入失败");
+        }
+    });
     connect(ui->btnPageNext, &QPushButton::clicked, this, [&]() {
         unsigned int cur = ui->edCurPage->text().toUInt();
         push_content(current_, cur + 1);
@@ -302,7 +317,7 @@ void MainWidget::item_changed_handle(QTableWidgetItem* item)
     int col = item->column();
 
     QString    xml_key = tab_widget_->item(row, 0)->text();
-    Element_t* result = get_element_bykey(xml_key);
+    Element_t* result = get_element_by_key(xml_key);
     if (result == nullptr) {
         return;
     }
@@ -329,7 +344,7 @@ void MainWidget::copy_select_line()
         return;
     }
 
-    Element_t* target = get_element_bykey(cur_item->text());
+    Element_t* target = get_element_by_key(cur_item->text());
     if (target == nullptr) {
         return;
     }
@@ -423,7 +438,7 @@ void MainWidget::init_menu()
             return;
         }
 
-        Element_t* target = get_element_bykey(cur_item->text());
+        Element_t* target = get_element_by_key(cur_item->text());
         if (target == nullptr) {
             return;
         }
@@ -463,7 +478,7 @@ void MainWidget::del_select_line()
     if (item == nullptr) {
         return;
     }
-    Element_t* target = get_element_bykey(item->text());
+    Element_t* target = get_element_by_key(item->text());
     if (target == nullptr) {
         return;
     }
@@ -489,7 +504,7 @@ Element_t* MainWidget::get_current_select_key()
     if (item == nullptr) {
         return ret;
     }
-    ret = get_element_bykey(item->text());
+    ret = get_element_by_key(item->text());
     return ret;
 }
 
@@ -515,7 +530,7 @@ void MainWidget::reset()
     push_content(current_);
 }
 
-tinyxml2::XMLElement* MainWidget::get_element_bykey(const QString& key)
+tinyxml2::XMLElement* MainWidget::get_element_by_key(const QString& key)
 {
     Element_t* ret = nullptr;
     for (const auto& ele : current_) {
@@ -530,6 +545,17 @@ tinyxml2::XMLElement* MainWidget::get_element_bykey(const QString& key)
     return ret;
 }
 
+Element_t* MainWidget::get_element_by_row(int row)
+{
+    Element_t* ret = nullptr;
+    if (row < 0 || !tab_widget_ || row >= tab_widget_->rowCount()) {
+        return ret;
+    }
+    QTableWidgetItem* item = tab_widget_->item(row, 0);
+    ret = get_element_by_key(item->text());
+    return ret;
+}
+
 void MainWidget::sort_by_repeat(std::vector<Element_t*>& vec)
 {
     struct SElement_t {
@@ -564,4 +590,30 @@ void MainWidget::sort_by_repeat(std::vector<Element_t*>& vec)
     for (const auto& item : turn_vec) {
         vec.push_back(item.ele);
     }
-}
+}
+
+void MainWidget::copy_multi_data()
+{
+    if (tab_widget_ == nullptr) {
+        return;
+    }
+    QModelIndexList indexList = tab_widget_->selectionModel()->selectedRows();
+    if (indexList.size() < 1) {
+        CUtil::msg(this, u8"无选择数据");
+        return;
+    }
+    QString ret;
+    for (int i = 0; i < indexList.size(); ++i) {
+        Element_t* e = get_element_by_row(indexList[i].row());
+        if (e == nullptr) {
+            continue;
+        }
+        tinyxml2::XMLPrinter printer;
+        e->Accept(&printer);
+        ret.append(printer.CStr());
+    }
+
+    CDataEdit edit;
+    edit.set_data(ret);
+    edit.exec();
+}