feat: refactor proxy table ui

ui/widget/MyTableWidget.h

@@ -4,6 +4,7 @@
 #include <QTableWidget>
 #include <QDropEvent>
 #include <QDebug>
+#include <functional>
 #include <utility>
 
 class MyTableWidget : public QTableWidget {
@@ -15,31 +16,18 @@ public:
         this->setSelectionBehavior(QAbstractItemView::SelectRows);
     };
 
-    // takes and returns the whole row
-    QList<QTableWidgetItem *> takeRow(int row) {
-        QList<QTableWidgetItem *> rowItems;
-        for (int col = 0; col < columnCount(); ++col) {
-            rowItems << takeItem(row, col);
-        }
-        return rowItems;
-    }
+    QList<int> order;          // id sorted (save)
+    std::map<int, int> id2Row; // id2Row
+    QList<int> row2Id;         // row2Id: use this to refresh data
 
-    // sets the whole row
-    void setRow(int row, const QList<QTableWidgetItem *> &rowItems) {
-        for (int col = 0; col < columnCount(); ++col) {
-            setItem(row, col, rowItems.at(col));
-        }
-    }
-
-    QList<int> order; // id sorted
     std::function<void()> callback_save_order;
-    std::map<int, int> id2Row;
+    std::function<void(int id)> refresh_data;
 
     void _save_order(bool saveToFile) {
         order.clear();
         id2Row.clear();
         for (int i = 0; i < this->rowCount(); i++) {
-            auto id = this->item(i, 0)->data(114514).toInt();
+            auto id = row2Id[i];
             order += id;
             id2Row[id] = i;
         }
@@ -57,7 +45,7 @@ public:
         bool needSave = false;
         auto deleted_profiles = order;
         for (int i = 0; i < this->rowCount(); i++) {
-            auto id = this->item(i, 0)->data(114514).toInt();
+            auto id = row2Id[i];
             deleted_profiles.removeAll(id);
         }
         for (auto deleted_profile: deleted_profiles) {
@@ -65,9 +53,10 @@ public:
             order.removeAll(deleted_profile);
         }
 
-        QMap<int, QList<QTableWidgetItem *>> newRows;
+        // map(dstRow -> srcId)
+        QMap<int, int> newRows;
         for (int i = 0; i < this->rowCount(); i++) {
-            auto id = this->item(i, 0)->data(114514).toInt();
+            auto id = row2Id[i];
             auto dst = order.indexOf(id);
             if (dst == i) continue;
             if (dst == -1) {
@@ -75,12 +64,12 @@ public:
                 needSave = true;
                 continue;
             }
-            newRows[dst] = takeRow(i);
+            newRows[dst] = id;
         }
 
         for (int i = 0; i < this->rowCount(); i++) {
             if (!newRows.contains(i)) continue;
-            setRow(i, newRows[i]);
+            row2Id[i] = newRows[i];
         }
 
         // Then save the order
@@ -95,30 +84,27 @@ protected:
      * 注意：DragDropMode相关参数的设置
      */
     void dropEvent(QDropEvent *event) override {
+        if (order.isEmpty()) order = row2Id;
+
         // 原行号与目标行号的确定
         int row_src, row_dst;
         row_src = this->currentRow();                        // 原行号 可加if
+        auto id_src = row2Id[row_src];                       // id_src
         QTableWidgetItem *item = this->itemAt(event->pos()); // 获取落点的item
         if (item != nullptr) {
             // 判断是否为空
             row_dst = item->row(); // 不为空 获取其行号
-            // 保证鼠标落下的位置 就是拖拽的一行最后所移动到的位置(考虑插入新行 移除原行的上下变化)
-            row_src = (row_src > row_dst ? row_src + 1 : row_src); // 如果src在dst的下方(行号大)，后续插入dst会影响src的行号
-            row_dst = (row_src < row_dst ? row_dst + 1 : row_dst); // 如果src在dst的上方(行号小)，后续移除src会影响dst的行号
-            this->insertRow(row_dst);                              // 插入一行
+            // Modify order
+            order.removeAt(row_src);
+            order.insert(row_dst, id_src);
         } else {
             // 落点没有item 说明拖动到了最下面
-            row_dst = this->rowCount(); // 获取行总数
-            this->insertRow(row_dst);   // 在最后新增一行
+            return;
         }
-        // 执行移动 并移除原行
-        for (int i = 0; i < this->columnCount(); i++) {
-            // 遍历列
-            this->setItem(row_dst, i, this->takeItem(row_src, i)); // 每一列item的移动
-        }
-        this->removeRow(row_src); // 删除原行
 
-        // Then save the order
-        _save_order(true);
+        // Do update order & refresh
+        clearSelection();
+        update_order(true);
+        refresh_data(-1);
     };
 };