fix: resolve thread freeze caused by network disconnection

Changed the network check logic for CIFS mounts from checking only first
mount point to checking all available mount points when determining
trash state. Added new method checkAllCIFSBusy() in NetworkUtils to
handle this.

Previously, when network disconnection occurred while accessing CIFS
shares, the system would only check the first mount point, potentially
causing the main thread to hang if that mount point was unresponsive.
This fix checks all mount points properly and prevents UI freezes.

Log: Fixed thread freeze issue when network disconnection occurs during
CIFS access

Influence:
1. Test trash operations while connected to CIFS/SMB shares
2. Verify application doesn't freeze when network disconnects
3. Check trash state updates correctly after operations
4. Monitor system responsiveness during network interruptions
5. Test with multiple CIFS mount points simultaneously

fix: 解决断网导致主线程卡死问题

修改了检查CIFS挂载的网络逻辑，从仅检查第一个挂载点改为检查所有可用挂载点
来确定回收站状态。在NetworkUtils中添加了新的checkAllCIFSBusy()方法来处理
这种情况。

之前当访问CIFS共享时发生网络断开，系统只会检查第一个挂载点，如果该挂载点
无响应可能导致主线程卡死。此修复会正确检查所有挂载点并防止UI冻结。

Log: 修复了访问CIFS时断网导致应用卡死的问题

Influence:
1. 测试连接CIFS/SMB共享时的回收站操作
2. 验证网络断开时应用不会冻结
3. 检查操作后回收站状态是否正确更新
4. 监控网络中断期间系统的响应性
5. 测试同时使用多个CIFS挂载点的情况

Author: Johnson-zs

src/dfm-base/utils/fileutils.cpp

@@ -359,11 +359,8 @@ bool FileUtils::isCdRomDevice(const QUrl &url)
 
 bool FileUtils::trashIsEmpty()
 {
-    const auto &cifsHost = NetworkUtils::cifsMountHostInfo();
-    if (!cifsHost.isEmpty()) {
-        const auto &mountPoint = cifsHost.constKeyValueBegin()->first;
-        if (NetworkUtils::instance()->checkFtpOrSmbBusy(QUrl::fromLocalFile(mountPoint)))
-            return true;
+    if (NetworkUtils::instance()->checkAllCIFSBusy()) {
+        return true;
     }
 
     // not use cache, because some times info unreliable, such as watcher inited temporality

src/dfm-base/utils/networkutils.cpp

@@ -83,7 +83,7 @@ void NetworkUtils::doAfterCheckNet(const QString &host, const QStringList &ports
     watcher->setFuture(QtConcurrent::run([host, ports, msecs]() {
         if (ports.isEmpty()) {
             qCInfo(logDFMBase) << "Network check skipped: no ports specified for host:" << host;
-            return true; // skip check if ports are empty.
+            return true;   // skip check if ports are empty.
         }
 
         for (const auto &port : ports) {
@@ -167,6 +167,18 @@ bool NetworkUtils::parseIp(const QString &mpt, QString &ip, QStringList &ports)
     return false;
 }
 
+bool NetworkUtils::checkAllCIFSBusy()
+{
+    const auto &cifsHost = NetworkUtils::cifsMountHostInfo();
+    for (const auto &mountPoint : cifsHost.keys()) {
+        if (NetworkUtils::instance()->checkFtpOrSmbBusy(QUrl::fromLocalFile(mountPoint))) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
 bool NetworkUtils::checkFtpOrSmbBusy(const QUrl &url)
 {
     QString host;

src/dfm-base/utils/networkutils.h

@@ -27,6 +27,7 @@ class NetworkUtils : public QObject
                          std::function<void(bool)> callback = nullptr, int msecs = 3000);
     bool parseIp(const QString &mpt, QString &ip, QString &port);
     bool parseIp(const QString &mpt, QString &ip, QStringList &ports);
+    bool checkAllCIFSBusy();
     bool checkFtpOrSmbBusy(const QUrl &url);
     // if network mount，get network mount
     static QMap<QString, QString> cifsMountHostInfo();

src/plugins/common/dfmplugin-trashcore/events/trashcoreeventsender.cpp

@@ -48,13 +48,9 @@ void TrashCoreEventSender::initTrashWatcher()
 
 bool TrashCoreEventSender::checkAndStartWatcher()
 {
-    const auto &cifsHost = NetworkUtils::cifsMountHostInfo();
-    if (!cifsHost.isEmpty()) {
-        const auto &mountPoint = cifsHost.constKeyValueBegin()->first;
-        if (NetworkUtils::instance()->checkFtpOrSmbBusy(QUrl::fromLocalFile(mountPoint))) {
-            timer.start();
-            return false;
-        }
+    if (NetworkUtils::instance()->checkAllCIFSBusy()) {
+        timer.start();
+        return false;
     }
     return trashFileWatcher->startWatcher();
 }
@@ -66,14 +62,14 @@ TrashCoreEventSender *TrashCoreEventSender::instance()
 }
 
 void TrashCoreEventSender::sendTrashStateChangedDel()
-{    
+{
     bool actuallyEmpty = FileUtils::trashIsEmpty();
     TrashState newState = actuallyEmpty ? TrashState::Empty : TrashState::NotEmpty;
-    
+
     // Only send signal if state actually changed
     if (trashState == TrashState::Unknown || newState != trashState) {
         trashState = newState;
-        
+
         // Only send signal when trash becomes empty (files deleted)
         if (trashState == TrashState::Empty) {
             qInfo() << "TrashCore: Trash became empty, sending state changed signal";