[emojier] Set window ID so it can be raised when already open

BUG: 426632
FIXED-IN: 5.21

applets/kimpanel/backend/ibus/emojier/CMakeLists.txt

 kconfig_add_kcfg_files(emojier_KCFG emojiersettings.kcfgc GENERATE_MOC)
 
 add_executable(ibus-ui-emojier-plasma emojier.cpp resources.qrc ${emojier_KCFG})
-target_link_libraries(ibus-ui-emojier-plasma Qt5::Widgets ${IBUS_LIBRARIES} ${GOBJECT_LIBRARIES} Qt5::Quick KF5::ConfigGui KF5::I18n KF5::CoreAddons KF5::Crash KF5::QuickAddons KF5::DBusAddons)
+target_link_libraries(ibus-ui-emojier-plasma Qt5::Widgets ${IBUS_LIBRARIES} ${GOBJECT_LIBRARIES} Qt5::Quick Qt5::X11Extras KF5::ConfigGui KF5::I18n KF5::CoreAddons KF5::Crash KF5::QuickAddons KF5::DBusAddons KF5::WindowSystem)
 
 install(TARGETS ibus-ui-emojier-plasma ${KDE_INSTALL_TARGETS_DEFAULT_ARGS})
 install(FILES org.kde.plasma.emojier.desktop DESTINATION ${DATA_INSTALL_DIR}/kglobalaccel)

applets/kimpanel/backend/ibus/emojier/emojier.cpp

@@ -44,6 +44,9 @@
 #include <QDBusMessage>
 #include <QDBusConnectionInterface>
 #include <QSessionManager>
+#include <QX11Info>
+
+#include <kstartupinfo.h>
 
 #include "emojiersettings.h"
 #include "config-workspace.h"
@@ -373,6 +376,10 @@ int main(int argc, char** argv)
             auto w = qobject_cast<QQuickWindow*>(object);
             if (!w)
                 continue;
+
+            if (w && QX11Info::isPlatformX11())
+                KStartupInfo::setNewStartupId(w, QX11Info::nextStartupId());
+
             w->setVisible(true);
             w->raise();
         }