KSMServer: improve suspend code

1. Some code deduplication. Suspending is now handled via the public method `suspend(int)` which is DCOP-accessible and maps SuspendType values to corresponding TDEHWLib TDESystemPowerState values, and the internal method `suspendInternal(int)` which performs the chosen suspend and optionally locks the screen beforehand.
2. Options are now read from power-managerrc on startup and stored in memory to avoid reading the configuration file every time a suspend is requested.
3. SuspendType is now a member of KSMServer class (instead of KSMShutdownDlg)
4. A new DCOP-accessible method `suspendOptions()` returns a TQStringList of all available suspend options.

Signed-off-by: Mavridis Philippe <mavridisf@gmail.com>
(cherry picked from commit d88718ee02)

ksmserver/KSMServerInterface.h

@@ -10,6 +10,11 @@ class KSMServerInterface : virtual public DCOPObject
 
 k_dcop:
   virtual void logout(int, int, int ) = 0;
+  virtual void logoutTimed( int, int, TQString ) = 0;
+  virtual bool suspend(int) = 0;
+
+  virtual TQStringList suspendOptions() = 0;
+
   virtual void restoreSessionInternal() = 0;
   virtual void restoreSessionDoneInternal() = 0;
   virtual TQStringList sessionList() = 0;
@@ -19,11 +24,11 @@ k_dcop:
   virtual void saveCurrentSessionAs( TQString ) = 0;
 
   virtual void autoStart2() = 0;
-  
+
   virtual void suspendStartup( TQCString ) = 0;
   virtual void resumeStartup( TQCString ) = 0;
 
-  virtual void logoutTimed( int, int, TQString ) = 0;
+  virtual void reconfigure() = 0;
 };
 
 #endif

ksmserver/server.cpp

@@ -689,6 +689,8 @@ KSMServer::KSMServer( const TQString& windowManager, const TQString& windowManag
     connect( &restoreTimer, TQ_SIGNAL( timeout() ), this, TQ_SLOT( tryRestoreNext() ) );
     connect( &shutdownTimer, TQ_SIGNAL( timeout() ), this, TQ_SLOT( timeoutQuit() ) );
     connect( kapp, TQ_SIGNAL( shutDown() ), this, TQ_SLOT( cleanUp() ) );
+
+    reconfigure();
 }
 
 KSMServer::~KSMServer()
@@ -697,6 +699,16 @@ KSMServer::~KSMServer()
     cleanUp();
 }
 
+void KSMServer::reconfigure()
+{
+    // respect lock on resume & disable suspend/hibernate settings
+    // from power-manager
+    TDEConfig cfg("power-managerrc");
+    m_disableSuspend = cfg.readBoolEntry("disableSuspend", false);
+    m_disableHibernate = cfg.readBoolEntry("disableHibernate", false);
+    m_lockOnResume = cfg.readBoolEntry("lockOnResume", true);
+}
+
 void KSMServer::cleanUp()
 {
     if (clean) return;
@@ -919,6 +931,27 @@ void KSMServer::storeSession()
     config->sync();
 }
 
+TQStringList KSMServer::suspendOptions()
+{
+    TQStringList sopt;
+
+#ifdef WITH_TDEHWLIB
+    TDERootSystemDevice* rootDevice = hwDevices->rootSystemDevice();
+    if (rootDevice->canFreeze() && !m_disableSuspend)
+        sopt << "freeze";
+
+    if (rootDevice->canSuspend() && !m_disableSuspend)
+        sopt << "suspend";
+
+    if (rootDevice->canHibernate() && !m_disableHibernate)
+        sopt << "hibernate";
+
+    if (rootDevice->canHybridSuspend() && !m_disableSuspend && !m_disableHibernate)
+        sopt << "hybridSuspend";
+#endif
+
+    return sopt;
+}
 
 TQStringList KSMServer::sessionList()
 {
@@ -995,4 +1028,4 @@ bool KSMServer::defaultSession() const
 bool KSMServer::startupCompleted()
 {
 	  return m_startupCompleted;
-}
+}

ksmserver/server.h

@@ -37,6 +37,17 @@ class KSMListener;
 class KSMConnection;
 class KSMClient;
 
+namespace SuspendType {
+    enum SuspendType {
+        NotSpecified = 0,
+        Freeze,
+        Standby, // not implemented
+        Suspend,
+        Hibernate,
+        HybridSuspend
+    };
+};
+
 enum SMType { SM_ERROR, SM_WMCOMMAND, SM_WMSAVEYOURSELF };
 struct SMData
     {
@@ -103,6 +114,7 @@ public:
 
 public slots:
     void cleanUp();
+    void reconfigure();
 
 private slots:
     void newConnection( int socket );
@@ -172,6 +184,8 @@ private:
 			   TDEApplication::ShutdownMode sdmode,
 			   TQString bootOption = TQString::null );
 
+    void suspendInternal(int state);
+
     void performLegacySessionSave();
     void storeLegacySession( TDEConfig* config );
     void restoreLegacySession( TDEConfig* config );
@@ -186,12 +200,14 @@ private:
     void resumeStartupInternal();
 
     // public dcop interface
-    void logout( int, int, int );
-    virtual void logoutTimed( int, int, TQString );
+    void logout(int, int, int);
+    virtual void logoutTimed(int, int, TQString);
+    bool suspend(int);
+    TQStringList suspendOptions();
     TQStringList sessionList();
     TQString currentSession();
     void saveCurrentSession();
-    void saveCurrentSessionAs( TQString );
+    void saveCurrentSessionAs(TQString);
 
     TQWidget* startupNotifierIPDlg;
     TQWidget* shutdownNotifierIPDlg;
@@ -240,6 +256,10 @@ private:
     TDEApplication::ShutdownType pendingShutdown_sdtype;
     TDEApplication::ShutdownMode pendingShutdown_sdmode;
 
+    bool m_disableSuspend;
+    bool m_disableHibernate;
+    bool m_lockOnResume;
+
     // ksplash interface
     void upAndRunning( const TQString& msg );
     void publishProgress( int progress, bool max  = false  );

ksmserver/shutdown.cpp

@@ -222,45 +222,13 @@ void KSMServer::shutdownInternal( TDEApplication::ShutdownConfirm confirm,
     if ( !logoutConfirmed ) {
         int selection;
         KSMShutdownFeedback::start(); // make the screen gray
-        logoutConfirmed =
-            KSMShutdownDlg::confirmShutdown( maysd, mayrb, sdtype, bopt, &selection );
+        logoutConfirmed = KSMShutdownDlg::confirmShutdown( maysd, mayrb, sdtype, bopt, &selection );
         // ###### We can't make the screen remain gray while talking to the apps,
         // because this prevents interaction ("do you want to save", etc.)
         // TODO: turn the feedback widget into a list of apps to be closed,
         // with an indicator of the current status for each.
         KSMShutdownFeedback::stop(); // make the screen become normal again
-        if (selection != SuspendType::NotSpecified) {
-		// respect lock on resume & disable suspend/hibernate settings
-		// from power-manager
-		TDEConfig config("power-managerrc");
-		bool lockOnResume = config.readBoolEntry("lockOnResume", true);
-		if (lockOnResume) {
-			TQCString replyType;
-			TQByteArray replyData;
-			// Block here until lock is complete
-			// If this is not done the desktop of the locked session will be shown after suspend/hibernate until the lock fully engages!
-			kapp->dcopClient()->call("kdesktop", "KScreensaverIface", "lock()", TQCString(""), replyType, replyData);
-		}
-#ifdef WITH_TDEHWLIB
-		TDERootSystemDevice* rootDevice = hwDevices->rootSystemDevice();
-		if (rootDevice) {
-			switch (selection) {
-				case SuspendType::Freeze:
-					rootDevice->setPowerState(TDESystemPowerState::Freeze);
-					break;
-				case SuspendType::Suspend:
-					rootDevice->setPowerState(TDESystemPowerState::Suspend);
-					break;
-				case SuspendType::Hibernate:
-					rootDevice->setPowerState(TDESystemPowerState::Hibernate);
-					break;
-				case SuspendType::HybridSuspend:
-					rootDevice->setPowerState(TDESystemPowerState::HybridSuspend);
-					break;
-			}
-		}
-#endif
-        }
+        suspend(selection);
     }
 
     if ( logoutConfirmed ) {
@@ -343,6 +311,66 @@ void KSMServer::shutdown( TDEApplication::ShutdownConfirm confirm,
     shutdownInternal( confirm, sdtype, sdmode );
 }
 
+void KSMServer::suspendInternal(int state)
+{
+    if (m_lockOnResume) {
+        TQCString replyType;
+        TQByteArray replyData;
+        // Block here until lock is complete
+        // If this is not done the desktop of the locked session will be shown after suspend/hibernate until the lock fully engages!
+        kapp->dcopClient()->call("kdesktop", "KScreensaverIface", "lock()", TQCString(""), replyType, replyData);
+    }
+
+    TDERootSystemDevice* rootDevice = hwDevices->rootSystemDevice();
+    rootDevice->setPowerState((TDESystemPowerState::TDESystemPowerState)state);
+}
+
+bool KSMServer::suspend(int stype)
+{
+    if (stype == SuspendType::NotSpecified)
+        return false;
+
+#ifdef WITH_TDEHWLIB
+    TDERootSystemDevice* rootDevice = hwDevices->rootSystemDevice();
+    if (rootDevice) {
+        switch (stype) {
+            case SuspendType::Freeze:
+                if (rootDevice->canFreeze() && !m_disableSuspend)
+                {
+                    suspendInternal(TDESystemPowerState::Freeze);
+                    return true;
+                }
+                break;
+
+            case SuspendType::Suspend:
+                if (rootDevice->canSuspend() && !m_disableSuspend)
+                {
+                    suspendInternal(TDESystemPowerState::Suspend);
+                    return true;
+                }
+                break;
+
+            case SuspendType::Hibernate:
+                if (rootDevice->canHibernate() && !m_disableHibernate)
+                {
+                    suspendInternal(TDESystemPowerState::Hibernate);
+                    return true;
+                }
+                break;
+
+            case SuspendType::HybridSuspend:
+                if (rootDevice->canHybridSuspend() && !m_disableSuspend && !m_disableHibernate)
+                {
+                    suspendInternal(TDESystemPowerState::HybridSuspend);
+                    return true;
+                }
+                break;
+        }
+    }
+#endif
+    return false;
+}
+
 #include <tdemessagebox.h>
 
 void KSMServer::logoutTimed( int sdtype, int sdmode, TQString bootOption )

ksmserver/shutdowndlg.cpp

@@ -11,6 +11,7 @@ Copyright (C) 2000 Matthias Ettrich <ettrich@kde.org>
 #endif
 
 #include "shutdowndlg.h"
+#include "server.h"
 
 #include <tqapplication.h>
 #include <tqlayout.h>
@@ -804,7 +805,6 @@ KSMShutdownDlg::KSMShutdownDlg( TQWidget* parent,
 		TDEConfig config("power-managerrc");
 		bool disableSuspend = config.readBoolEntry("disableSuspend", false);
 		bool disableHibernate = config.readBoolEntry("disableHibernate", false);
-		m_lockOnResume = config.readBoolEntry("lockOnResume", true);
 
 		bool canFreeze = false;
 		bool canSuspend = false;
@@ -892,7 +892,7 @@ KSMShutdownDlg::KSMShutdownDlg( TQWidget* parent,
 				hbuttonbox->addWidget ( btnHybridSuspend );
 				connect(btnHybridSuspend, TQ_SIGNAL(clicked()), TQ_SLOT(slotHybridSuspend()));
 			}
-			
+
 			// Separator (within buttonlay)
 			vbox->addWidget( new KSeparator( frame ) );
 
@@ -1065,7 +1065,7 @@ KSMShutdownDlg::KSMShutdownDlg( TQWidget* parent,
 				buttonlay->addWidget( btnHybridSuspend );
 				connect(btnHybridSuspend, TQ_SIGNAL(clicked()), TQ_SLOT(slotHybridSuspend()));
 			}
-			
+
 			buttonlay->addStretch( 1 );
 
 			// Separator

ksmserver/shutdowndlg.h

@@ -34,17 +34,6 @@ class TDEAction;
 
 #include <config.h>
 
-namespace SuspendType {
-enum SuspendType {
-	NotSpecified = 0,
-	Freeze,
-	Standby,
-	Suspend,
-	Hibernate,
-	HybridSuspend
-};
-};
-
 // The (singleton) widget that makes/fades the desktop gray.
 class KSMShutdownFeedback : public TQWidget
 {
@@ -149,7 +138,6 @@ private:
 	TQString m_bootOption;
 	TQPopupMenu *targets;
 	TQStringList rebootOptions;
-	bool m_lockOnResume;
 	int* m_selection;
 };