Fix Ctrl+Backspace bug after Select All in chat search popup (#4536)

CHANGELOG.md

@@ -9,6 +9,7 @@
 - Bugfix: Fixed link tooltips not showing unless the thumbnail setting was enabled. (#4597)
 - Bugfix: Domains starting with `http` are now parsed as links again. (#4598)
 - Bugfix: Fixed click effects on buttons not being antialiased. (#4473)
+- Bugfix: Fixed Ctrl+Backspace not working after Select All in chat search popup. (#4461)
 - Dev: Added the ability to control the `followRedirect` mode for requests. (#4594)
 
 ## 2.4.3

src/widgets/helper/SearchPopup.cpp

@@ -185,6 +185,22 @@ void SearchPopup::showEvent(QShowEvent *)
     this->search();
 }
 
+bool SearchPopup::eventFilter(QObject *object, QEvent *event)
+{
+    if (object == this->searchInput_ && event->type() == QEvent::KeyPress)
+    {
+        QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
+        if (keyEvent->key() == Qt::Key_Backspace &&
+            keyEvent->modifiers() == Qt::ControlModifier &&
+            this->searchInput_->text() == this->searchInput_->selectedText())
+        {
+            this->searchInput_->clear();
+            return true;
+        }
+    }
+    return false;
+}
+
 void SearchPopup::search()
 {
     if (this->snapshot_.size() == 0)
@@ -279,6 +295,7 @@ void SearchPopup::initLayout()
                     QPixmap(":/buttons/clearSearch.png"));
                 QObject::connect(this->searchInput_, &QLineEdit::textChanged,
                                  this, &SearchPopup::search);
+                this->searchInput_->installEventFilter(this);
             }
 
             layout1->addLayout(layout2);

src/widgets/helper/SearchPopup.hpp

@@ -31,6 +31,7 @@ public:
 protected:
     virtual void updateWindowTitle();
     void showEvent(QShowEvent *event) override;
+    bool eventFilter(QObject *object, QEvent *event) override;
 
 private:
     void initLayout();