From 09287f3d9e9e88271de2bfd5388dae5a53e8c6f5 Mon Sep 17 00:00:00 2001
From: Sine Striker <trueful@163.com>
Date: 周四, 07 12月 2023 15:03:24 +0800
Subject: [PATCH] Add host event filter

---
 src/core/contexts/abstractwindowcontext.cpp |   58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 files changed, 56 insertions(+), 2 deletions(-)

diff --git a/src/core/contexts/abstractwindowcontext.cpp b/src/core/contexts/abstractwindowcontext.cpp
index d0d6ebb..c7a5c85 100644
--- a/src/core/contexts/abstractwindowcontext.cpp
+++ b/src/core/contexts/abstractwindowcontext.cpp
@@ -2,11 +2,60 @@
 
 namespace QWK {
 
-    AbstractWindowContext::AbstractWindowContext(const QObject *host, const WindowItemDelegate *delegate)
-        : m_host(host), m_delegate(delegate), m_windowHandle(delegate->hostWindow(host)) {
+    AbstractWindowContext::AbstractWindowContext()
+        : m_host(nullptr), m_delegate(nullptr), m_windowHandle(nullptr) {
     }
 
     AbstractWindowContext::~AbstractWindowContext() = default;
+
+    class EventFilterForwarder : public QObject {
+    public:
+        using EventProc = bool (*)(QEvent *, void *);
+
+        EventFilterForwarder(EventProc proc, void *user, QObject *parent = nullptr)
+            : QObject(parent), proc(proc), user(user) {
+        }
+
+        bool eventFilter(QObject *obj, QEvent *event) override {
+            Q_UNUSED(obj)
+            return proc(event, user);
+        }
+
+    protected:
+        EventProc proc;
+        void *user;
+    };
+
+    bool AbstractWindowContext::setup(QObject *host, WindowItemDelegate *delegate) {
+        if (!host || !delegate) {
+            return false;
+        }
+
+        auto windowHandle = delegate->hostWindow(host);
+        if (!windowHandle) {
+            return false;
+        }
+
+        m_host = host;
+        m_delegate.reset(delegate);
+        m_windowHandle = windowHandle;
+
+        if (!setupHost()) {
+            m_host = nullptr;
+            m_delegate = nullptr;
+            m_windowHandle = nullptr;
+            return false;
+        }
+
+        // Install specific event filter
+        host->installEventFilter(new EventFilterForwarder(
+            [](QEvent *event, void *user) {
+                return reinterpret_cast<AbstractWindowContext *>(user)->hostEventFilter(event);
+            },
+            this, this));
+
+        return true;
+    }
 
     bool AbstractWindowContext::setHitTestVisible(const QObject *obj, bool visible) {
         Q_ASSERT(obj);
@@ -141,4 +190,9 @@
         return true;
     }
 
+    bool AbstractWindowContext::hostEventFilter(QEvent *event) {
+        Q_UNUSED(event)
+        return false;
+    }
+
 }
\ No newline at end of file

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