备份列表控件优化

kybackup/component/backuplistwidget.cpp

@@ -49,34 +49,23 @@ BackupListWidget::BackupListWidget(QWidget *parent /*= nullptr*/) :
     connect(this, &BackupListWidget::currentItemChanged, this, [=](QListWidgetItem *current, QListWidgetItem *previous) {
         if (current) {
             MyItemWidget *widget = qobject_cast<MyItemWidget *>(this->itemWidget(current));
-            emit widget->selected(true);
+            if (widget)
+                emit widget->selected(true);
         }
 
         if (previous) {
             MyItemWidget *widget = qobject_cast<MyItemWidget *>(this->itemWidget(previous));
-            emit widget->selected(false);
+            if (widget)
+                emit widget->selected(false);
         }
 
-        repaint();
+        // repaint();
     });
 }
 
 BackupListWidget::~BackupListWidget()
 {}
 
-int BackupListWidget::findIndexOfItem(QListWidgetItem *item)
-{
-    int index = -1;
-    for (int row = 0; row < this->count(); ++row) {
-        if (item == this->item(row)) {
-            index = row;
-            break;
-        }
-    }
-
-    return index;
-}
-
 bool BackupListWidget::contains(const QString& text)
 {
     // 1、针对使用addItem等的正规使用场景（展示内容在原生item上）
@@ -136,9 +125,10 @@ bool BackupListWidget::appendItem(const QString &text)
             buttonDelete->setVisible(false);
     });
 
-    connect(buttonDelete, &QPushButton::clicked, [=]() {
+    connect(buttonDelete, &QPushButton::clicked, this, [=]() {
         this->m_List.removeOne(label->text());
-        this->takeItem(this->findIndexOfItem(item));
+        this->removeItemWidget(item);
+        this->takeItem(this->row(item));
         delete item;
         if (this->count() == 0) {
             m_plusLogo->setVisible(true);

kybackup/component/backuplistwidget.h

@@ -27,9 +27,6 @@ public:
     // 添加列表项，注意使用本类的功能不能用addItem等基类添加项的方法
     bool appendItem(const QString &text);
 
-    // 根据QListWidgetItem*查找项对应的索引序号
-    int findIndexOfItem(QListWidgetItem *item);
-
     // 判断列表项是否包含text，注意使用时不能用findItems等基类查找方法
     bool contains(const QString &text);