GlobalFileChangeBlocker: Don't install event filter on qApp

Connect to applicationStateChanged() signal instead.

Change-Id: I95ccabd06233902400bda0c01ea89b1c7cdf0e92
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

2 files changed, 8 insertions, 15 deletions

diff --git a/src/libs/utils/globalfilechangeblocker.cpp b/src/libs/utils/globalfilechangeblocker.cpp
index 060e0f210d..01f5709d0b 100644
--- a/src/libs/utils/globalfilechangeblocker.cpp
+++ b/src/libs/utils/globalfilechangeblocker.cpp
@@ -26,14 +26,15 @@
 #include "globalfilechangeblocker.h"
 #include "qtcassert.h"
 
-#include <QApplication>
+#include <QGuiApplication>
 
 namespace Utils {
 
 GlobalFileChangeBlocker::GlobalFileChangeBlocker()
 {
-    m_blockedState = QApplication::applicationState() != Qt::ApplicationActive;
-    qApp->installEventFilter(this);
+    m_blockedState = QGuiApplication::applicationState() != Qt::ApplicationActive;
+    connect(qApp, &QGuiApplication::applicationStateChanged,
+            this, &GlobalFileChangeBlocker::applicationStateChanged);
 }
 
 GlobalFileChangeBlocker *GlobalFileChangeBlocker::instance()
@@ -48,19 +49,12 @@ void GlobalFileChangeBlocker::forceBlocked(bool blocked)
         ++m_forceBlocked;
     else if (QTC_GUARD(m_forceBlocked > 0))
         --m_forceBlocked;
-    emitIfChanged();
+    applicationStateChanged(QGuiApplication::applicationState());
 }
 
-bool GlobalFileChangeBlocker::eventFilter(QObject *obj, QEvent *e)
+void GlobalFileChangeBlocker::applicationStateChanged(Qt::ApplicationState state)
 {
-    if (obj == qApp && e->type() == QEvent::ApplicationStateChange)
-        emitIfChanged();
-    return false;
-}
-
-void GlobalFileChangeBlocker::emitIfChanged()
-{
-    const bool blocked = m_forceBlocked || (QApplication::applicationState() != Qt::ApplicationActive);
+    const bool blocked = m_forceBlocked || (state != Qt::ApplicationActive);
     if (blocked != m_blockedState) {
         emit stateChanged(blocked);
         m_blockedState = blocked;
diff --git a/src/libs/utils/globalfilechangeblocker.h b/src/libs/utils/globalfilechangeblocker.h
index 0f36dfce92..9d683797ce 100644
--- a/src/libs/utils/globalfilechangeblocker.h
+++ b/src/libs/utils/globalfilechangeblocker.h
@@ -45,8 +45,7 @@ signals:
 
 private:
     GlobalFileChangeBlocker();
-    bool eventFilter(QObject *obj, QEvent *e) override;
-    void emitIfChanged();
+    void applicationStateChanged(Qt::ApplicationState state);
 
     int m_forceBlocked = 0;
     bool m_blockedState = false;