feat: add trash file drop support

Added functionality to handle file drops on the trash icon in the task
manager
1. Implemented moveFilesToTrash method that converts URL paths to local
files and moves them to system trash
2. Added file drop detection for "dde-trash" item ID with proper debug
logging
3. Included necessary Qt headers for file operations (QFile, QFileInfo,
QProcess, QUrl)
4. Added error handling for empty file paths with warning messages

feat: 添加回收站文件拖放支持

在任务管理器中添加了对回收站图标的文件拖放处理功能
1. 实现了moveFilesToTrash方法，将URL路径转换为本地文件并移动到系统回收站
2. 添加了对"dde-trash"项目ID的文件拖放检测，包含适当的调试日志
3. 包含了文件操作所需的Qt头文件（QFile、QFileInfo、QProcess、QUrl）
4. 为空的文件路径添加了错误处理，包含警告消息

Pms: BUG-271091

Author: wjyrich

panels/dock/taskmanager/taskmanager.cpp

@@ -23,6 +23,8 @@
 
 #include <QGuiApplication>
 #include <QStringLiteral>
+#include <QUrl>
+#include <DTrashManager>
 
 #include <appletbridge.h>
 
@@ -269,6 +271,13 @@ void TaskManager::handleWindowAdded(QPointer<AbstractWindow> window)
 
 void TaskManager::dropFilesOnItem(const QString& itemId, const QStringList& urls)
 {
+    if (itemId == "dde-trash") {
+        qCDebug(taskManagerLog) << "dropFilesOnItem: dde-trash - moving files to trash:" << urls;
+        // 将文件移动到回收站
+        moveFilesToTrash(urls);
+        return;
+    }
+
     auto indexes = m_itemModel->match(m_itemModel->index(0, 0), TaskManager::ItemIdRole, itemId, 1, Qt::MatchExactly);
     if (indexes.isEmpty()) {
         return;
@@ -282,6 +291,20 @@ void TaskManager::dropFilesOnItem(const QString& itemId, const QStringList& urls
     m_itemModel->requestOpenUrls(indexes.first(), urlList);
 }
 
+void TaskManager::moveFilesToTrash(const QStringList& urls)
+{
+    // 将文件路径转换为本地路径并移动到回收站
+    for (const QString& urlString : urls) {
+        QUrl url(urlString);
+        QString filePath = url.toLocalFile();
+        if (DTrashManager::instance()->moveToTrash(filePath)) {
+            qCDebug(taskManagerLog) << "Successfully moved to trash:" << filePath;
+        } else {
+            qCWarning(taskManagerLog) << "Failed to move to trash:" << filePath;
+        }
+    }
+}
+
 void TaskManager::hideItemPreview()
 {
     m_windowMonitor->hideItemPreview();

panels/dock/taskmanager/taskmanager.h

@@ -97,6 +97,9 @@ class TaskManager : public DS_NAMESPACE::DContainment, public AbstractTaskManage
     Q_INVOKABLE void activateWindow(uint32_t windowID);
     Q_INVOKABLE void saveDockElementsOrder(const QStringList &appIds);
 
+private:
+    void moveFilesToTrash(const QStringList& urls);
+
 Q_SIGNALS:
     void dataModelChanged();
     void windowSplitChanged();