Fix: Seletion is cleared when paletted changed.

修复收到palettechanged信号时列表选中状态消失的问题.

src/control/search-list-view.cpp

@@ -128,7 +128,13 @@ void SearchListView::clear() {
  */
 void SearchListView::refresh()
 {
+    QModelIndex index = this->currentIndex();
     m_model->refresh();
+    if(index.row() >= 0 && index.row() < m_model->length() && m_isSelected) {
+        this->blockSignals(true);
+        this->setCurrentIndex(index);
+        this->blockSignals(false);
+    }
     rowheight = this->rowHeight(this->model()->index(0, 0, QModelIndex())) + 1;
     this->setFixedHeight(m_item->getCurrentSize() * rowheight + 4);
 }

src/model/search-item-model.cpp

@@ -186,3 +186,8 @@ void SearchItemModel::refresh()
     this->beginResetModel();
     this->endResetModel();
 }
+
+int SearchItemModel::length()
+{
+    return m_item->m_pathlist.length();
+}

src/model/search-item-model.h

@@ -60,6 +60,7 @@ public:
     void clear();
     void setBestAppIcon(const QString &, const bool &);
     void refresh();
+    int length();
 
 private :
     SearchItem * m_item = nullptr;