feat: add keyboard focus management for plugin surfaces

1. Added setKeyboardFocus method to PluginSurface class to handle
keyboard focus via Wayland seat
2. Exposed the method as Q_INVOKABLE for QML access
3. Implemented focus handling in ShellSurfaceItemProxy when hovered
4. Includes necessary QWaylandSeat header for keyboard focus management
5. This ensures proper keyboard input handling when interacting with
plugin surfaces

feat: 为插件表面添加键盘焦点管理

1. 在 PluginSurface 类中添加 setKeyboardFocus 方法，通过 Wayland seat 处
理键盘焦点
2. 将方法暴露为 Q_INVOKABLE 以便 QML 访问
3. 在 ShellSurfaceItemProxy 中实现悬停时的焦点处理
4. 包含必要的 QWaylandSeat 头文件用于键盘焦点管理
5. 确保与插件表面交互时能正确处理键盘输入

Pms: BUG-312795

Author: wjyrich

panels/dock/pluginmanagerextension.cpp

@@ -14,6 +14,7 @@
 #include <QtWaylandCompositor/QWaylandSurface>
 #include <QtWaylandCompositor/QWaylandResource>
 #include <QtWaylandCompositor/QWaylandCompositor>
+#include <QtWaylandCompositor/QWaylandView>
 
 #include <QJsonObject>
 #include <QJsonParseError>
@@ -431,6 +432,9 @@ void PluginManager::initialize()
 #endif
 
     init(compositor->display(), 1);
+
+    // 设置鼠标焦点监听器
+    setupMouseFocusListener();
 }
 
 void PluginManager::updateDockOverflowState(int state)
@@ -685,3 +689,26 @@ QString PluginManager::popupMinHeightMsg() const
 
     return toJson(obj);
 }
+
+void PluginManager::setupMouseFocusListener()
+{
+    QWaylandCompositor *compositor = static_cast<QWaylandCompositor *>(extensionContainer());
+    if (!compositor)
+        return;
+
+    QWaylandSeat *seat = compositor->defaultSeat();
+    if (!seat)
+        return;
+
+    QObject::connect(seat, &QWaylandSeat::mouseFocusChanged, this,
+        [seat](QWaylandView *newFocus, QWaylandView *oldFocus) {
+            Q_UNUSED(oldFocus);
+            if(!newFocus)
+                return;
+
+            if (auto surface = newFocus->surface()) {
+                qDebug()<<"setKeyboardFocus";
+                seat->setKeyboardFocus(surface);
+            }
+        });
+}

panels/dock/pluginmanagerextension_p.h

@@ -9,6 +9,8 @@
 #include <QtWaylandCompositor/QWaylandCompositor>
 #include <QtWaylandCompositor/QWaylandSurface>
 #include <QtWaylandCompositor/QWaylandResource>
+#include <QtWaylandCompositor/QWaylandSeat>
+
 #include <cstdint>
 
 #include "qwayland-server-fractional-scale-v1.h"
@@ -76,6 +78,9 @@ class PluginManager : public QWaylandCompositorExtensionTemplate<PluginManager>,
 
     void removePluginSurface(PluginSurface *plugin);
 
+    //处理鼠标焦点给到相应插件
+    void setupMouseFocusListener();
+
 Q_SIGNALS:
     void pluginPopupCreated(PluginPopup*);
     void pluginCloseQuickPanelPopup();