Delete emote popup when it is closed.

src/util/QObjectRef.hpp

@@ -0,0 +1,74 @@
+#pragma once
+
+#include <QObject>
+#include <type_traits>
+
+namespace chatterino
+{
+    /// Holds a pointer to a QObject and resets it to nullptr if the QObject
+    /// gets destroyed.
+    template <typename T>
+    class QObjectRef
+    {
+    public:
+        QObjectRef()
+        {
+            static_assert(std::is_base_of_v<QObject, T>);
+        }
+
+        explicit QObjectRef(T* t)
+        {
+            static_assert(std::is_base_of_v<QObject, T>);
+
+            this->swap(t);
+        }
+
+        ~QObjectRef()
+        {
+            this->swap(nullptr);
+        }
+
+        QObjectRef& operator=(T* t)
+        {
+            this->swap(t);
+            return *this;
+        }
+
+        operator bool()
+        {
+            return t_;
+        }
+
+        T* operator->()
+        {
+            return t_;
+        }
+
+        T* get()
+        {
+            return t_;
+        }
+
+        QObject* swap(T* other)
+        {
+            // old
+            if (this->conn_)
+            {
+                QObject::disconnect(this->conn_);
+            }
+
+            // new
+            if (other)
+            {
+                QObject::connect(other, &QObject::destroyed,
+                    [this]() { this->swap(nullptr); });
+            }
+
+            return std::exchange(this->t_, other);
+        }
+
+    private:
+        T* t_{};
+        QMetaObject::Connection conn_;
+    };
+}  // namespace chatterino

src/widgets/dialogs/EmotePopup.cpp

@@ -100,8 +100,8 @@ namespace {
     }
 }  // namespace
 
-EmotePopup::EmotePopup()
-    : BaseWindow(nullptr, BaseWindow::EnableCustomFrame)
+EmotePopup::EmotePopup(QWidget *parent)
+    : BaseWindow(parent, BaseWindow::EnableCustomFrame)
 {
     auto layout = new QVBoxLayout(this);
     this->getLayoutContainer()->setLayout(layout);

src/widgets/dialogs/EmotePopup.hpp

@@ -14,7 +14,7 @@ using ChannelPtr = std::shared_ptr<Channel>;
 class EmotePopup : public BaseWindow
 {
 public:
-    EmotePopup();
+    EmotePopup(QWidget *parent = nullptr);
 
     void loadChannel(ChannelPtr channel);
     void loadEmojis();

src/widgets/splits/SplitInput.cpp

@@ -153,7 +153,9 @@ void SplitInput::openEmotePopup()
 {
     if (!this->emotePopup_)
     {
-        this->emotePopup_ = std::make_unique<EmotePopup>();
+        this->emotePopup_ = new EmotePopup(this);
+        this->emotePopup_->setAttribute(Qt::WA_DeleteOnClose);
+
         this->emotePopup_->linkClicked.connect([this](const Link &link) {
             if (link.type == Link::InsertText)
             {

src/widgets/splits/SplitInput.hpp

@@ -1,5 +1,6 @@
 #pragma once
 
+#include "util/QObjectRef.hpp"
 #include "widgets/BaseWidget.hpp"
 
 #include <QHBoxLayout>
@@ -46,7 +47,7 @@ private:
     void openEmotePopup();
 
     Split *const split_;
-    std::shared_ptr<EmotePopup> emotePopup_;
+    QObjectRef<EmotePopup> emotePopup_;
 
     struct {
         ResizingTextEdit *textEdit;