[ksmserver] Remove obsolete KDELibs4Support dependency

Summary:
The inhibition was dysfunctional, as powerdevil delays the inhibition
by 5 seconds (and is already stopped when the delay times out). Also
powerdevil handles concurrent user session shutdowns and sleep requests
itself, so the code is obsolete.

As KDELibs4Support pulled in a number of Frameworks, we have to
explicitly add these now.

Reviewers: #plasma, broulik, davidedmundson

Reviewed By: #plasma, davidedmundson

Subscribers: apol, sitter, anthonyfieroni, plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D22296

ksmserver/CMakeLists.txt

@@ -66,6 +66,7 @@ target_link_libraries(kdeinit_ksmserver
     PW::KWorkspace
     KF5::XmlGui
     KF5::GlobalAccel
+    KF5::I18n
     KF5::KIOCore
     KF5::KIOWidgets
     ${X11_LIBRARIES}
@@ -75,8 +76,9 @@ target_link_libraries(kdeinit_ksmserver
     Qt5::Quick
     KF5::Declarative
     KF5::DBusAddons
+    KF5::Notifications
     KF5::Package
-    KF5::KDELibs4Support # Solid/PowerManagement
+    KF5::WindowSystem
     ${PHONON_LIBRARIES}
     Qt5::Concurrent
 )

ksmserver/logout.cpp

@@ -76,8 +76,6 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "global.h"
 #include "client.h"
 
-#include <solid/powermanagement.h>
-
 #include "logoutprompt_interface.h"
 #include "shutdown_interface.h"
 
@@ -184,10 +182,6 @@ void KSMServer::performLogout()
     }
     state = Shutdown;
 
-    // If the logout was confirmed, let's start a powermanagement inhibition.
-    // We store the cookie so we can interrupt it if the logout will be canceled
-    inhibitCookie = Solid::PowerManagement::beginSuppressingSleep(QStringLiteral("Shutting down system"));
-
     // shall we save the session on logout?
     KConfigGroup cg(KSharedConfig::openConfig(), "General");
     saveSession = ( cg.readEntry( "loginMode",
@@ -393,7 +387,6 @@ void KSMServer::cancelShutdown( KSMClient* c )
         clientsToSave.clear();
         emit subSessionCloseCanceled();
     } else {
-        Solid::PowerManagement::stopSuppressingSleep(inhibitCookie);
         qCDebug(KSMSERVER) << "Client " << c->program() << " (" << c->clientId() << ") canceled shutdown.";
         KNotification::event( QStringLiteral( "cancellogout" ),
                               i18n( "Logout canceled by '%1'", c->program()),

ksmserver/server.h

@@ -245,10 +245,6 @@ private:
 
     WindowMap legacyWindows;
 
-
-    int inhibitCookie;
-
-
     //subSession stuff
     QList<KSMClient*> clientsToKill;
     QList<KSMClient*> clientsToSave;