func：完成增删与界面的匹配。

MainWidget.cpp

@@ -32,6 +32,7 @@ MainWidget::MainWidget(QWidget* parent) : QWidget(parent), ui(new Ui::MainWidget
     connect(ui->btnSave, &QPushButton::clicked, this, [&]() { save(); });
     connect(ui->btnCopySelectLine, &QPushButton::clicked, this, [&]() { copy_select_line(); });
     connect(ui->btnDelSelectLine, &QPushButton::clicked, this, [&]() { del_select_line(); });
+    connect(ui->btnExit, &QPushButton::clicked, this, [&]() { QApplication::exit(0); });
     connect(ui->btnReset, &QPushButton::clicked, this, &MainWidget::reset);
     connect(ui->btnPagePre, &QPushButton::clicked, this, [&]() {
         unsigned int cur = ui->edCurPage->text().toUInt();
@@ -128,17 +129,7 @@ void MainWidget::push_content(const std::vector<tinyxml2::XMLElement*>& eles, st
     for (auto p = (page - 1) * g_OnePage; p < all_size && p < max_show; ++p) {
         int row_cnt = tab_widget_->rowCount();
         tab_widget_->insertRow(row_cnt);
-        for (auto i = 0; i < keys_.size(); ++i) {
-            const char*       data = eles[p]->Attribute(keys_[i].c_str());
-            QTableWidgetItem* wgItem = new QTableWidgetItem();
-
-            if (i == 0) {
-                wgItem->setFlags(wgItem->flags() & ~Qt::ItemIsEditable);
-            }
-
-            wgItem->setText(QString(data));
-            tab_widget_->setItem(row_cnt, i, wgItem);
-        }
+        insert_one_line(eles[p], row_cnt);
     }
     ui->edCurPage->setText(QString::number(page));
     cur_page_ = page;
@@ -197,6 +188,8 @@ void MainWidget::search()
 {
     QString key = ui->edSearchKey->text().trimmed();
     if (key.isEmpty()) {
+        current_ = vec_;
+        push_content(current_);
         return;
     }
     if (tab_widget_ == nullptr) {
@@ -250,7 +243,13 @@ void MainWidget::copy_select_line()
     if (!CUtil::affirm(this, u8"确认", u8"确认复制吗？")) {
         return;
     }
-    Element_t* target = get_current_select_key();
+
+    QTableWidgetItem* cur_item = get_current_select_item();
+    if (cur_item == nullptr) {
+        return;
+    }
+
+    Element_t* target = get_element_bykey(cur_item->text());
     if (target == nullptr) {
         return;
     }
@@ -270,7 +269,36 @@ void MainWidget::copy_select_line()
     xml_.key_value_to_element(newer, property);
     xml_.insert_brother_node(target, newer);
 
-    // TODO: 添加到界面
+    tab_widget_->insertRow(cur_item->row() + 1);
+    insert_one_line(newer, cur_item->row() + 1);
+
+    std::vector<Element_t*>::iterator it;
+    for (it = vec_.begin(); it != vec_.end(); ++it) {
+        if (*it == target) {
+            break;
+        }
+    }
+    int df = it - vec_.begin() + 1;
+    vec_.insert(vec_.begin() + df, newer);
+    search();
+}
+
+void MainWidget::insert_one_line(Element_t* ele, int row)
+{
+    if (ele == nullptr) {
+        return;
+    }
+    for (auto i = 0; i < keys_.size(); ++i) {
+        const char*       data = ele->Attribute(keys_[i].c_str());
+        QTableWidgetItem* wgItem = new QTableWidgetItem();
+
+        if (i == 0) {
+            wgItem->setFlags(wgItem->flags() & ~Qt::ItemIsEditable);
+        }
+
+        wgItem->setText(QString(data));
+        tab_widget_->setItem(row, i, wgItem);
+    }
 }
 
 void MainWidget::del_select_line()
@@ -278,18 +306,43 @@ void MainWidget::del_select_line()
     if (!CUtil::affirm(this, u8"确认", u8"确认删除吗？")) {
         return;
     }
-    Element_t* target = get_current_select_key();
+    QTableWidgetItem* item = get_current_select_item();
+    if (item == nullptr) {
+        return;
+    }
+    Element_t* target = get_element_bykey(item->text());
     if (target == nullptr) {
         return;
     }
     xml_.del_element(target);
 
     // TODO: 添加到界面
+    tab_widget_->removeRow(item->row());
+
+    std::vector<Element_t*>::iterator it;
+    for (it = vec_.begin(); it != vec_.end(); ++it) {
+        if (*it == target) {
+            break;
+        }
+    }
+    vec_.erase(it);
+    search();
 }
 
 Element_t* MainWidget::get_current_select_key()
 {
-    Element_t* ret = nullptr;
+    Element_t*        ret = nullptr;
+    QTableWidgetItem* item = get_current_select_item();
+    if (item == nullptr) {
+        return ret;
+    }
+    ret = get_element_bykey(item->text());
+    return ret;
+}
+
+QTableWidgetItem* MainWidget::get_current_select_item()
+{
+    QTableWidgetItem* ret = nullptr;
     if (tab_widget_ == nullptr) {
         return ret;
     }
@@ -298,9 +351,7 @@ Element_t* MainWidget::get_current_select_key()
         CUtil::msg(this, u8"没有选中数据");
         return ret;
     }
-    QTableWidgetItem* item = selectedItems[0];
-    int               row = item->row();
-    ret = get_element_bykey(item->text());
+    ret = selectedItems[0];
     return ret;
 }