Added KDE3 version of kpowersave

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/kpowersave@1092957 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 1720 insertions, 0 deletions

diff --git a/src/hardware.cpp b/src/hardware.cpp
new file mode 100644
index 0000000..6be19a1
--- /dev/null
+++ b/src/hardware.cpp
@@ -0,0 +1,1720 @@
+ /**************************************************************************
+ *   Copyright (C) 2006-2007 by Danny Kukawka                              *
+ *                              <dkukawka@suse.de>, <danny.kukawka@web.de> *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of version 2 of the GNU General Public License     *
+ *   as published by the Free Software Foundation.                         *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.             *
+ ***************************************************************************/
+
+/*! 
+ * \file 	hardware.cpp
+ * \brief 	In this file can be found the hardware information related code. 
+ * \author 	Danny Kukawka, <dkukawka@suse.de>, <danny.kukawka@web.de>
+ * \date    	2006-2007
+ */
+
+// include global header
+#include <fcntl.h>
+
+// include QT header
+#include <qtimer.h>
+#include <qdir.h>
+
+// include own header
+#include "hardware.h"
+#include "kpowersave_debug.h"
+#include "privileges.h"
+
+/*! The default constructor of the class HardwareInfo */
+HardwareInfo::HardwareInfo() {
+	kdDebugFuncIn(trace);
+
+	// init members
+	acadapter = true;
+	lidclose = false;
+	dbus_terminated = true;
+	hal_terminated = true;
+	laptop = false;
+	brightness = false;
+	brightness_in_hardware = false;
+	schedPowerSavings = false;
+	sessionIsActive = true;	 // assume as first we are active
+
+	// update everything the first time
+	update_info_ac_changed = true;
+	update_info_cpufreq_policy_changed = true;
+	update_info_primBattery_changed = true;
+	
+	currentCPUFreqPolicy = UNKNOWN_CPUFREQ;
+	primaryBatteriesWarnLevel = 12;
+	primaryBatteriesLowLevel = 7;
+	primaryBatteriesCriticalLevel = 2;
+
+	allUDIs = QStringList();
+	consoleKitSession = QString();
+	BatteryList.setAutoDelete( true ); // the list owns the objects
+	
+	primaryBatteries = new BatteryCollection(BAT_PRIMARY);
+	setPrimaryBatteriesWarningLevel(); // force default settings
+
+	// connect to D-Bus and HAL
+	dbus_HAL = new dbusHAL();
+	if (dbus_HAL->isConnectedToDBUS()) {
+		dbus_terminated = false;
+		if (dbus_HAL->isConnectedToHAL()) {
+			hal_terminated = false;
+		} else {
+			kdError() << "Could not connect to HAL" << endl;
+		}
+	} else {
+		kdError() << "Could not connect to D-Bus & HAL" << endl;
+	}
+
+	checkConsoleKitSession();
+	checkPowermanagement();
+	checkIsLaptop();
+	checkBrightness();
+	checkCPUFreq();
+	// getSchedPowerSavings(); 
+	checkSuspend();
+	intialiseHWInfo();
+
+	updatePrimaryBatteries();
+
+	// connect to signals
+	connect(dbus_HAL, SIGNAL(msgReceived_withStringString( msg_type, QString, QString )),
+		this, SLOT(processMessage( msg_type, QString, QString )));
+	connect(dbus_HAL, SIGNAL(backFromSuspend(int)), this, SLOT(handleResumeSignal(int)));
+
+	kdDebugFuncOut(trace);
+}
+
+/*! The default desctuctor of the class HardwareInfo */
+HardwareInfo::~HardwareInfo() {
+	kdDebugFuncIn(trace);
+
+	delete dbus_HAL;
+	dbus_HAL = NULL;
+
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * This funtion is used to handle the reconnect to the D-Bus daemon
+ */
+void HardwareInfo::reconnectDBUS() {
+	kdDebugFuncIn(trace);
+
+	if (!dbus_HAL->isConnectedToDBUS()) {
+		bool _reconnect = dbus_HAL->reconnect();
+
+		if (!_reconnect && !dbus_HAL->isConnectedToDBUS()) {
+			//reconnect failed
+			emit dbusRunning(DBUS_NOT_RUNNING);
+			QTimer::singleShot(4000, this, SLOT(reconnectDBUS()));
+		} else if (!_reconnect && dbus_HAL->isConnectedToDBUS()) {
+			// reset everything, we are reconnected
+			dbus_terminated = false;
+			hal_terminated = true;
+			emit dbusRunning(DBUS_RUNNING);
+		} else if (_reconnect) {
+			// reset everything, we are reconnected
+			dbus_terminated = false;
+			hal_terminated = false;
+			reinitHardwareInfos();
+			emit dbusRunning(hal_terminated);
+			emit halRunning(DBUS_RUNNING);
+		}  
+	} 
+
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * This funtion is used to reinit all hardware information.
+ * \return 		Boolean with result of the call
+ * \retval true		if reinit HW infos correct
+ * \retval false	if not
+ */
+bool HardwareInfo::reinitHardwareInfos () {
+	kdDebugFuncIn(trace);
+	
+	if (dbus_HAL->isConnectedToDBUS() && dbus_HAL->isConnectedToHAL()) {
+		/* first cleanup */
+		acadapter = true;
+		lidclose = false;
+		laptop = false;
+		brightness = false;
+		has_APM = false;
+		has_ACPI = false;
+	
+		update_info_ac_changed = true;
+		update_info_cpufreq_policy_changed = true;
+		update_info_primBattery_changed = true;
+		
+		allUDIs = QStringList();
+
+		BatteryList.clear();
+		primaryBatteries = new BatteryCollection(BAT_PRIMARY);
+
+		// check the current desktop session again
+		checkConsoleKitSession();
+
+		/* reinit hardware data */
+		checkPowermanagement();
+		checkIsLaptop();
+		checkBrightness();
+		checkCPUFreq();
+		checkSuspend();
+		intialiseHWInfo();
+		// getSchedPowerSavings();
+		updatePrimaryBatteries();
+	
+		kdDebugFuncOut(trace);	
+		return true;
+	} else {
+		kdDebugFuncOut(trace);
+		return false;
+	}
+}
+
+/*!
+ * This funtion is used to parse a message from D-Bus for the different 
+ * messagetypes and events.
+ * \param type 		a \ref msg_type which should be parse/processed
+ * \param message 	the message
+ * \param value 	an optional message value as e.g. message string
+ */
+void HardwareInfo::processMessage (msg_type type, QString message, QString value) {
+	kdDebugFuncIn(trace);
+
+	switch(type) {
+		case ACPI_EVENT:
+			// we don't handle acpi events here atm
+			break;
+		case DBUS_EVENT:
+			kdDebug() << "D-Bus Event: " << value << endl;
+			if ( message.startsWith("dbus.terminate")){
+				// TODO: addapt from pdaemon
+				dbus_terminated = true;
+				QTimer::singleShot(4000, this, SLOT(reconnectDBUS()));
+			}
+			else if ( message.startsWith("hal.")) {
+				if ( message.startsWith("hal.terminate")) {
+					hal_terminated = true;
+					emit halRunning(false);
+					// TODO: update data
+					emit generalDataChanged();
+				} else if ( message.startsWith("hal.started")) {
+					hal_terminated = false;
+					reinitHardwareInfos();
+					emit halRunning( true );
+					// TODO: update data
+					emit generalDataChanged();
+				}
+				// TODO: addapt from pdaemon
+			}
+			break;
+		case HAL_DEVICE:
+			// --> we can maybe ignore these events except for batteries, not shure atm
+			int _type;
+
+			if (message.startsWith("DeviceAdded")) {
+				if (checkIfHandleDevice(value, &_type)) {
+					switch (_type) {
+						case BATTERY:
+						case AC_ADAPTER:
+						case BUTTON_SLEEP:
+						case BUTTON_POWER:
+						case LID:
+							// TODO: handle code if needed actually not 
+							break;
+						case LAPTOP_PANEL:
+							checkBrightness();
+							break;
+						default:
+							kdDebug() << "New device added Device udi: "
+								  << value << "type: " << _type << endl;
+							break;
+					}
+				}
+			} else if (message.startsWith("DeviceRemoved")) {
+				if (allUDIs.contains(value)) {
+					if (checkIfHandleDevice(value, &_type)) {
+						switch (_type) {
+							case BATTERY:
+							case AC_ADAPTER:
+							case BUTTON_SLEEP:
+							case BUTTON_POWER:
+							case LID:
+								// TODO: handle code if needed
+								break;
+							case LAPTOP_PANEL:
+								checkBrightness();
+								break;
+							default:
+								kdDebug() << "Couldn't handle unknown device" << endl;
+								break;
+						}
+					}
+				} else {
+					kdDebug() << "Not monitored device removed: " << value << endl;
+				}
+			} else {
+				kdDebug() << "Unknown HAL_DEVICE message: " << message << endl;
+			}
+			break;
+		case HAL_PROPERTY_CHANGED:
+			if (!message.isEmpty() && allUDIs.contains( message )) {
+				if (value.startsWith( "ac_adapter.present" )) {
+					QTimer::singleShot(50, this, SLOT(checkACAdapterState()));
+				} else if (value.startsWith( "battery." )) {
+					// this is a battery event
+					updateBatteryValues(message, value);
+				} else if (value.startsWith( "button.state.value" )) {
+					if (message.startsWith( *udis["lidclose"] )) {
+						QTimer::singleShot(50, this, SLOT(checkLidcloseState()));
+					}
+				} else if (value.startsWith( "laptop_panel")) {
+					if (message.startsWith( *udis["laptop_panel"] )) {
+						QTimer::singleShot(50, this, SLOT(checkBrightness()));
+					}
+				}
+				// TODO: add needed code
+			} else {
+				kdDebug() << "HAL_PROPERTY_CHANGED for unmonitored device: " << value << endl;
+			}
+			break;
+		case HAL_CONDITION:
+			// TODO: Check if we really need to monitor this events. We get maybe also 
+			//	 HAL_PROPERTY_CHANGED event for the key
+			if (message.startsWith("ButtonPressed")) {
+				kdDebug() << "ButtonPressed event from HAL: " << value << endl;
+				if (value.startsWith("lid")) {
+					QTimer::singleShot(50, this, SLOT(checkLidcloseState()));
+				} else if (value.startsWith("power")) {
+					QTimer::singleShot(50, this, SLOT(emitPowerButtonPressed()));
+				} else if (value.startsWith("sleep") || value.startsWith("suspend")) {
+					QTimer::singleShot(50, this, SLOT(emitSleepButtonPressed()));
+				} else if (value.startsWith("hibernate")) {
+					QTimer::singleShot(50, this, SLOT(emitS2diskButtonPressed()));
+				} else if (value.startsWith("brightness-")) {
+					if (!brightness_in_hardware && value.endsWith("-up"))
+						QTimer::singleShot(50, this, SLOT(brightnessUpPressed()));
+					else if (!brightness_in_hardware && value.endsWith("-down"))
+						QTimer::singleShot(50, this, SLOT(brightnessDownPressed()));
+				}
+			} else {
+				kdDebug() << "Unmonitored HAL_CONDITION: " << message << " : " << value << endl;
+			}
+			break;
+		case CONSOLEKIT_SESSION_ACTIVE:
+			if (!message.isEmpty() && !value.isEmpty()) {
+				if (message == consoleKitSession) {
+					if (value == "1") {
+						sessionIsActive = true;
+					} else {
+						sessionIsActive = false;
+					}
+					QTimer::singleShot(50, this, SLOT(emitSessionActiveState()));
+				} else {
+					if (trace)
+						kdDebug() << "CONSOLEKIT_SESSION_ACTIVE: not our session" << endl;
+				}
+			}
+			break;
+		case POLICY_POWER_OWNER_CHANGED:
+			if (message.startsWith("NOW_OWNER")) {
+				// TODO: add code
+			} else if (message.startsWith("OTHER_OWNER")){
+				// TODO: add code
+			}
+			break;
+		default:
+			kdDebug() << "Recieved unknown package type: " << type << endl;
+			break;
+	}
+
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * This SLOT is used to fetch the resume signal and multiplex. If needed some
+ * actions after resume, do this here.
+ * \param result 	integer with the result of the resume/suspend
+ */
+void HardwareInfo::handleResumeSignal (int result) {
+	if (trace) kdDebug() << funcinfo <<  "IN: " << "(int result: " << result << ")"<< endl;
+
+	if (result == -1) {
+		// check if time since suspend is higher than 6 hours, 
+		// the magic D-Bus timeout for pending calls
+		if (calledSuspend.elapsed() > 21600000) {
+			emit resumed(INT_MAX);
+		}
+	} else {
+		emit resumed(result);
+	}
+	
+	calledSuspend = QTime();
+	kdDebugFuncOut(trace);
+}
+
+/*! 
+ * This function checks the session for the running KPowersave instance
+ * \return 		Boolean with result of operation
+ * \retval true		if the query/check could get finished
+ * \retval false	on every error
+ */
+bool HardwareInfo::checkConsoleKitSession () {
+	kdDebugFuncIn(trace);
+
+	bool retval = false;
+
+	if (dbus_HAL->isConnectedToDBUS()) {
+		char *reply;
+		char *cookie = getenv("XDG_SESSION_COOKIE");
+
+		if (cookie == NULL) {
+			kdDebug() << "Could not get XDG_SESSION_COOKIE from environment" << endl;
+			sessionIsActive = true;
+		} else {
+			if (dbus_HAL->dbusSystemMethodCall( CK_SERVICE, CK_MANAGER_OBJECT, 
+							CK_MANAGER_IFACE, "GetSessionForCookie", 
+							&reply, DBUS_TYPE_OBJECT_PATH,
+							DBUS_TYPE_STRING, &cookie,
+							DBUS_TYPE_INVALID)) {
+				if (trace) 
+					kdDebug() << "GetSessionForCookie returned: " << reply << endl;
+				
+				if (reply != NULL) {
+					dbus_bool_t i_reply;
+					consoleKitSession = reply;
+	
+					if (dbus_HAL->dbusSystemMethodCall( CK_SERVICE, consoleKitSession, 
+									    CK_SESSION_IFACE, "IsActive", 
+									    &i_reply, DBUS_TYPE_BOOLEAN,
+									    DBUS_TYPE_INVALID)) {
+						sessionIsActive = ((i_reply != 0) ? true: false);
+						if (trace) 
+							kdDebug() << "IsActive returned: " << sessionIsActive << endl;
+	
+						retval = true;
+					} else {
+						kdError() << "Could get session cookie and session name, but not "
+							<< "but not the status of the session. Assume for now " 
+							<< "the Session is inactive!" << endl;
+						sessionIsActive = false;
+					}
+				}
+			}
+		}
+	}
+
+	kdDebugFuncOut(trace);
+	return retval;
+}
+
+
+/*! 
+ * This function check for a given UDI, if we should handle a device
+ * \param _udi		QString with the UDI of the device
+ * \param *type		pointer to a integer to return the type of the device, see \ref device_type
+ * \return 		Boolean with info if we should handle the device.
+ * \retval true		if we should handle
+ * \retval false	if not
+ */
+bool HardwareInfo::checkIfHandleDevice ( QString _udi, int *type) {
+	kdDebugFuncIn(trace);
+	
+	QStringList _cap;
+	bool ret = true;
+	
+	if (dbus_HAL->halGetPropertyStringList( _udi, "info.capabilities", &_cap) && !_cap.isEmpty()) {
+		if (_cap.contains("ac_adapter")) {
+			*type = BATTERY;
+		} else if (_cap.contains("button")) {
+			QString _val;
+			if (dbus_HAL->halGetPropertyString( _udi, "button.type", &_val)) {
+				if (_val.startsWith("lid")) {
+					*type = LID;
+				} else if ( _val.startsWith("power")) {
+					*type = BUTTON_POWER;
+				} else if ( _val.startsWith("sleep")) {
+					*type = BUTTON_SLEEP;
+				} else {
+					ret = false;
+				}
+			} else {
+				ret = false;
+			}
+		} else if (_cap.contains("battery")) {
+			*type = BATTERY;
+		} else if (_cap.contains("laptop_panel")) {
+			*type = LAPTOP_PANEL;
+		} else {
+			ret = false;
+			kdDebug() << "Device with capability " << _cap.join(", ") << " unhandled" << endl;
+		}
+	} else {
+		ret = false;
+	}
+	
+	if (!ret) *type = UNKNOWN_DEVICE;
+	
+	kdDebugFuncOut(trace);
+	return ret;
+}
+
+// --> set some values for devices
+/*!
+ * This function set the warning level for the primary battery collection
+ * If all give param are -1 or not set this function force the current 
+ * settings to the primary battery collection.
+ * \param _warn		value for the state BAT_WARN or -1
+ * \param _low		value for the state BAT_LOW or -1
+ * \param _crit		value for the state BAT_CRIT or -1
+ */
+void HardwareInfo::setPrimaryBatteriesWarningLevel (int _warn, int _low, int _crit ) {
+	if (trace) kdDebug() << funcinfo << "IN: " << "warn: " << _warn << " low: " << _low << " crit: " << _crit << endl;
+
+	if (_warn > -1 && _low > -1 && _crit > -1 ){
+		primaryBatteriesWarnLevel = _warn;
+		primaryBatteriesLowLevel = _low;
+		primaryBatteriesCriticalLevel = _crit;
+	}
+
+	if (primaryBatteries) {
+		primaryBatteries->setWarnLevel( primaryBatteriesWarnLevel );
+		primaryBatteries->setLowLevel( primaryBatteriesLowLevel );
+		primaryBatteries->setCritLevel( primaryBatteriesCriticalLevel );
+		if (!BatteryList.isEmpty()) {
+			primaryBatteries->refreshInfo( BatteryList, true );
+		}
+	}
+
+	kdDebugFuncOut(trace);
+}
+
+// --> init HW information section -- START <---
+
+/*!
+ * The function checks if the machine is a laptop.
+ */
+void HardwareInfo::checkIsLaptop () {
+	kdDebugFuncIn(trace);
+
+	QString ret;
+	
+	if (dbus_HAL->halGetPropertyString(HAL_COMPUTER_UDI, "system.formfactor", &ret)) {
+
+		if (!ret.isEmpty() && ret.startsWith("laptop"))
+			laptop = true;
+		else 
+			laptop = false;
+	} else {
+		// error case
+		laptop = false;
+	}
+
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * The function checks wether the machine support ACPI/APM/PMU or not.
+ */
+void HardwareInfo::checkPowermanagement() {
+	kdDebugFuncIn(trace);
+	
+	QString ret;
+
+	has_APM = false;
+	has_ACPI = false;
+	has_PMU = false;
+	
+	if (dbus_HAL->halGetPropertyString( HAL_COMPUTER_UDI, "power_management.type", &ret)) {
+	
+		if (ret.isEmpty()) {
+			return;
+		} else if (ret.startsWith("acpi")) {
+			has_ACPI = true;
+		} else if (ret.startsWith("apm")) {
+			has_APM = true;
+		} else if (ret.startsWith("pmu")) {
+			has_PMU = true;
+		}
+	}
+
+	kdDebugFuncOut(trace);
+}
+
+
+/*!
+ * The function checks wether the machine can suspend/standby.
+ */
+void HardwareInfo::checkSuspend() {
+	kdDebugFuncIn(trace);
+	
+	QStringList ret;
+	bool _ret_b = false;
+
+	suspend_states = SuspendStates();
+
+	if (dbus_HAL->halGetPropertyStringList( HAL_COMPUTER_UDI, HAL_PM_IFACE ".method_names",
+						&ret )) {
+		// check for suspend2ram
+		if (dbus_HAL->halGetPropertyBool( HAL_COMPUTER_UDI, "power_management.can_suspend", &_ret_b ) ||
+		    dbus_HAL->halGetPropertyBool( HAL_COMPUTER_UDI, "power_management.can_suspend_to_ram", 
+						  &_ret_b )) {
+			suspend_states.suspend2ram_can = _ret_b;
+			if (_ret_b) {
+				if (ret.contains( "Suspend" )) {
+					suspend_states.suspend2ram = true;
+					suspend_states.suspend2ram_allowed = dbus_HAL->isUserPrivileged(PRIV_SUSPEND,
+													HAL_COMPUTER_UDI);
+			}
+			} else {
+				suspend_states.suspend2ram = false;
+				suspend_states.suspend2ram_allowed = -1;
+			}
+		} else {
+			suspend_states.suspend2ram_can = false;
+			suspend_states.suspend2ram = false;
+			suspend_states.suspend2ram_allowed = -1;
+		}
+
+		// check for suspend2disk
+		if (dbus_HAL->halGetPropertyBool( HAL_COMPUTER_UDI, "power_management.can_hibernate", &_ret_b ) ||
+		    dbus_HAL->halGetPropertyBool( HAL_COMPUTER_UDI, "power_management.can_suspend_to_disk", 
+						  &_ret_b )) {
+			suspend_states.suspend2disk_can = _ret_b;
+			if (_ret_b) {
+				if (ret.contains( "Hibernate" )) {
+					suspend_states.suspend2disk = true;
+					suspend_states.suspend2disk_allowed =
+								 dbus_HAL->isUserPrivileged(PRIV_HIBERNATE,
+											    HAL_COMPUTER_UDI);
+			}
+			} else {
+				suspend_states.suspend2disk = false;
+				suspend_states.suspend2disk_allowed = -1;
+			}
+		} else {
+			suspend_states.suspend2disk_can = false;
+			suspend_states.suspend2disk = false;
+			suspend_states.suspend2disk_allowed = -1;
+		}
+
+		// check for StandBy
+		if (dbus_HAL->halGetPropertyBool( HAL_COMPUTER_UDI, "power_management.can_standby", &_ret_b )) {
+			suspend_states.standby_can = _ret_b;
+			if (_ret_b) {
+				if (ret.contains( "Standby" )) {
+					suspend_states.standby = true;
+					suspend_states.standby_allowed = dbus_HAL->isUserPrivileged(PRIV_STANDBY,
+												    HAL_COMPUTER_UDI);
+			}
+			} else {
+				suspend_states.standby = false;
+				suspend_states.standby_allowed = -1;
+			}
+		} else {
+			suspend_states.standby_can = false;
+			suspend_states.standby = false;
+			suspend_states.standby_allowed = -1;
+		}
+	}
+
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * The function checks wether the machine support CPU frequency changes
+ * via HAL.
+ */
+void HardwareInfo::checkCPUFreq() {
+	kdDebugFuncIn(trace);
+	
+	bool ret = false;
+
+	if (dbus_HAL->halQueryCapability( HAL_COMPUTER_UDI, "cpufreq_control", &ret )) {
+		cpuFreq = ret;
+		cpuFreqAllowed = dbus_HAL->isUserPrivileged( PRIV_CPUFREQ, HAL_COMPUTER_UDI);
+
+		checkCurrentCPUFreqPolicy();
+	} else {
+		cpuFreq = false;
+	}
+
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * The function check the currently selected CPU Frequency policy
+ * \return the current policy
+ */
+cpufreq_type HardwareInfo::checkCurrentCPUFreqPolicy() {
+	kdDebugFuncIn(trace);
+	
+	char *gov;
+
+	cpufreq_type _current = UNKNOWN_CPUFREQ;
+
+	if (cpuFreq) {
+
+		if (dbus_HAL->dbusSystemMethodCall( HAL_SERVICE, HAL_COMPUTER_UDI, 
+						    HAL_CPUFREQ_IFACE, "GetCPUFreqGovernor", 
+						    &gov, DBUS_TYPE_STRING, DBUS_TYPE_INVALID)) {
+			if (gov != NULL) {
+				kdDebug() << "got CPU Freq gov: " << gov << endl;
+				if (!strcmp(gov, "ondemand") || !strcmp(gov, "userspace") ||
+				    !strcmp(gov, "conservative")) {
+					_current = DYNAMIC;
+				} else if (!strcmp(gov, "powersave")) {
+					_current = POWERSAVE;
+				} else if (!strcmp(gov, "performance")) {
+					_current = PERFORMANCE;
+				} else {
+					kdError() << "Got unknown CPUFreq Policy back: " << gov << endl;
+				}
+				cpuFreqGovernor = gov;
+			}
+			else {
+				kdWarning() << "Could not get information about current governor" << endl;
+			}
+		} else {
+			kdWarning() << "Could not get information about current governor" << endl;
+		}
+	} else {
+		kdWarning() << "CPU Frequency interface not supported by machine or HAL" << endl;
+	}
+
+	if (_current != currentCPUFreqPolicy) {
+		currentCPUFreqPolicy = _current;
+		update_info_cpufreq_policy_changed = true;
+		emit currentCPUFreqPolicyChanged();
+	} else {
+		update_info_cpufreq_policy_changed = false;
+	}
+	
+	kdDebugFuncOut(trace);
+	return currentCPUFreqPolicy;
+}
+
+
+/*!
+ * The function checks wether the machine provide a brightness interface and init 
+ * (if needed) brightness information.
+ */
+void HardwareInfo::checkBrightness() {
+	kdDebugFuncIn(trace);
+
+	QStringList devices;
+
+	brightness = false;
+	currentBrightnessLevel = -1;
+	availableBrightnessLevels = -1;
+
+	if( dbus_HAL->halFindDeviceByCapability("laptop_panel", &devices)) {
+		if (devices.isEmpty()) {
+			udis.remove("laptop_panel");
+			kdDebug() << "no device with category laptop_panel found" << endl;
+			kdDebugFuncOut(trace);
+			return;
+		} else {
+			int retval;
+			
+	
+			kdDebug() << "laptop_panel device found: " << devices.first() << endl;
+			// we should asume there is only one laptop panel device in the system
+			if (dbus_HAL->halGetPropertyInt(devices.first(), "laptop_panel.num_levels", &retval )) {
+				udis.insert("laptop_panel", new QString( devices.first() ));
+				if (!allUDIs.contains( devices.first() ))
+					allUDIs.append( devices.first() );
+				
+				if (retval > 1) {
+					dbus_HAL->halGetPropertyBool(devices.first(), "laptop_panel.brightness_in_hardware",
+							             &brightness_in_hardware);
+
+					availableBrightnessLevels = retval;
+#ifdef USE_LIBHAL_POLICYCHECK
+					brightnessAllowed = dbus_HAL->isUserPrivileged( PRIV_LAPTOP_PANEL,
+										        devices.first());
+					// TODO: check brightnessAllowed
+#endif
+					brightness = true;
+					// get the current level via GetBrightness
+					checkCurrentBrightness();
+				} else {
+					kdError() << "Found a Panel, but laptop_panel.num_levels < 2, which means "
+						  << "KPowersave can't set usefull values" << endl;
+				}	
+			} 
+		}
+	}
+	
+	kdDebugFuncOut(trace);
+}
+
+
+/*!
+ * The function check the current brigthness
+ */
+void HardwareInfo::checkCurrentBrightness() {
+	kdDebugFuncIn(trace);
+
+	if (brightness) {
+		int retval;
+		// get the current level via GetBrightness
+		if (dbus_HAL->dbusSystemMethodCall( HAL_SERVICE, *udis["laptop_panel"], HAL_LPANEL_IFACE, 	
+						    "GetBrightness", &retval, DBUS_TYPE_INT32,
+						    DBUS_TYPE_INVALID ) ) {
+			currentBrightnessLevel = (int) retval;
+		}
+	}
+	
+	kdDebugFuncOut(trace);
+}
+
+
+/*!
+ * The function initialise the hardware information and collect all
+ * initial information from HAL.
+ * \return boolean with result of the operation
+ * \retval true  if successful
+ * \retval false else, if a error occurs
+ */
+bool HardwareInfo::intialiseHWInfo() {
+	kdDebugFuncIn(trace);
+
+	QStringList ret;
+
+	if (!dbus_HAL->isConnectedToDBUS() || !dbus_HAL->isConnectedToHAL()) 
+		return false;
+
+	if( dbus_HAL->halFindDeviceByCapability("ac_adapter", &ret)) {
+		// there should be normaly only one device, but let be sure
+		for ( QStringList::iterator it = ret.begin(); it != ret.end(); ++it ) {
+			// we need a deep copy
+			udis.insert("acadapter", new QString( *it ));
+			if (!allUDIs.contains( *it ))
+				allUDIs.append( *it );
+			checkACAdapterState();
+		}
+	}
+	
+	ret.clear();
+
+	if( dbus_HAL->halFindDeviceByString("button.type", "lid", &ret)) {
+		// there should be normaly only one device, but let be sure
+		for ( QStringList::iterator it = ret.begin(); it != ret.end(); ++it ) {
+			// we need a deep copy
+			udis.insert("lidclose", new QString( *it ));
+			if (!allUDIs.contains( *it ))
+				allUDIs.append( *it );
+			checkLidcloseState();
+		}
+	}
+
+	ret.clear();
+
+	// find batteries and fill battery information
+	if( dbus_HAL->halFindDeviceByCapability("battery", &ret)) {
+		if (!ret.isEmpty()) {
+			// there should be normaly only one device, but let be sure
+			for ( QStringList::iterator it = ret.begin(); it != ret.end(); ++it ) {
+				if (!allUDIs.contains( *it ))
+					allUDIs.append( *it );
+				BatteryList.append( new Battery(dbus_HAL, *it) );
+			}
+		
+			// connect to signals for primary batteries:
+			Battery *bat;
+			for (bat = BatteryList.first(); bat; bat = BatteryList.next() ) {
+				if (bat->getType() == BAT_PRIMARY) {
+					connect(bat, SIGNAL(changedBattery()),this, SLOT(updatePrimaryBatteries()));
+				}
+			}
+		}
+	}
+
+	kdDebugFuncOut(trace);
+	return true;
+}
+
+/*!
+ * The function/SLOT checks the state of the AC adapter.
+ */
+void HardwareInfo::checkACAdapterState() {
+	kdDebugFuncIn(trace);
+
+	if ( udis["acadapter"] ) {
+		bool _state;
+
+		if (dbus_HAL->halGetPropertyBool(*udis["acadapter"] , "ac_adapter.present", &_state )) {
+			if (_state != acadapter) {
+				acadapter = _state;
+				update_info_ac_changed = true;
+				emit ACStatus( acadapter );
+			} else {
+				update_info_ac_changed = false;
+			}
+		} else {
+			// we use true as default e.g. for workstations
+			acadapter = true;
+		}
+	}
+
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * The function checks the state of the Lidclose button.
+ */
+void HardwareInfo::checkLidcloseState() {
+	kdDebugFuncIn(trace);
+
+	if ( udis["lidclose"] ) {
+		bool _state;
+
+		if (dbus_HAL->halGetPropertyBool(*udis["lidclose"] , "button.state.value", &_state )) {
+			if (_state != lidclose) {
+				lidclose = _state;
+				emit lidcloseStatus( lidclose );
+			}
+		} else {
+			lidclose = false;
+		}
+	}
+
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * This funtion is used to call a update of a battery value for a given 
+ * UDI and the given changed property
+ * \param udi 		QString with the UDI of the battery
+ * \param property	QString with the changed property
+ */
+void HardwareInfo::updateBatteryValues (QString udi, QString property) {
+	kdDebugFuncIn(trace);
+
+	if (!udi.isEmpty() && allUDIs.contains( udi )) {
+		// find effected battery object
+		Battery *bat;
+		for (bat = BatteryList.first(); bat; bat = BatteryList.next() ) {
+			if (udi.startsWith( bat->getUdi())) {
+				// found a battery with udi
+				bat->updateProperty(udi, property);
+			}
+		}
+	} else {
+		kdDebug() << "UDI is empty or not in the list of monitored devices: " << udi << endl;
+	}
+
+	kdDebugFuncOut(trace);
+	return;
+}
+
+/*!
+ * This function refresh the information for the primary battery collection.
+ */
+void HardwareInfo::updatePrimaryBatteries () {
+	kdDebugFuncIn(trace);
+
+	if (!BatteryList.isEmpty()) {
+		if (primaryBatteries->getNumBatteries() < 1) {
+			setPrimaryBatteriesWarningLevel();
+			primaryBatteries->refreshInfo( BatteryList );
+			connect(primaryBatteries, SIGNAL(batteryChanged()), this, 
+				SLOT(setPrimaryBatteriesChanges()));
+			connect(primaryBatteries, SIGNAL(batteryWarnState(int,int)), this,
+				SLOT(emitBatteryWARNState(int,int)));
+		} else {
+			setPrimaryBatteriesWarningLevel();
+			primaryBatteries->refreshInfo( BatteryList );
+		}
+	} else {
+		primaryBatteries = new BatteryCollection(BAT_PRIMARY);
+	}
+
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * This function set the change status for the primary battery collection
+ */
+void HardwareInfo::setPrimaryBatteriesChanges () {
+	kdDebugFuncIn(trace);
+
+	update_info_primBattery_changed = true;
+	emit primaryBatteryChanged();
+
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * This slot emit a signal if a warning state of a battery reached
+ */
+void HardwareInfo::emitBatteryWARNState (int type, int state) {
+	kdDebugFuncIn(trace);
+
+	if (type == BAT_PRIMARY) 
+		emit primaryBatteryChanged();
+	else
+		emit generalDataChanged();
+
+	emit batteryWARNState(type, state);
+
+	kdDebugFuncOut(trace);
+}
+
+// --> init HW information section -- END <---
+// --> HAL method call (trigger actions) section -- START <---
+
+/*!
+ * Function to trigger a suspend via HAL 
+ * \param suspend 	enum of suspend_type with the requested suspend
+ * \return boolean with result of the operation
+ * \retval true  	if successful
+ * \retval false 	else, if a error occurs
+ */
+bool HardwareInfo::suspend( suspend_type suspend ) {
+	kdDebugFuncIn(trace);
+
+	calledSuspend = QTime();
+
+	if (dbus_HAL->isConnectedToDBUS() && dbus_HAL->isConnectedToHAL()) {
+		switch (suspend) {
+			case SUSPEND2DISK:
+				if (suspend_states.suspend2disk && (suspend_states.suspend2disk_allowed != 0)) {
+					if (dbus_HAL->dbusMethodCallSuspend("Hibernate")) {
+						calledSuspend.start();
+						return true;
+					} else {
+						return false;
+					}
+				} else {
+					if ( !suspend_states.suspend2disk ) 
+						kdDebug() << "The machine does not support suspend to disk." << endl;
+					else
+						kdWarning() << "Policy forbid user to trigger suspend to disk" << endl;
+
+					return false;
+				}
+				break;
+			case SUSPEND2RAM:
+				if (suspend_states.suspend2ram && (suspend_states.suspend2ram_allowed != 0)) {
+					if (dbus_HAL->dbusMethodCallSuspend("Suspend")) {
+						calledSuspend.start();
+						return true;
+					} else {
+						return false;
+					}
+				} else {
+					if ( !suspend_states.suspend2ram ) 
+						kdDebug() << "The machine does not support suspend to ram." << endl;
+					else
+						kdWarning() << "Policy forbid user to trigger suspend to ram" << endl;
+					
+					return false;
+				}
+				break;
+			case STANDBY:
+				if (suspend_states.standby && (suspend_states.standby_allowed != 0)) {
+					if (dbus_HAL->dbusMethodCallSuspend("Standby")) {
+						calledSuspend.start();
+						return true;
+					} else {
+						return false;
+					}
+				} else {
+					if ( !suspend_states.standby ) 
+						kdDebug() << "The machine does not support standby." << endl;
+					else
+						kdWarning() << "Policy forbid user to trigger standby" << endl;
+
+					return false;
+				}
+				break;
+			default:
+				return false;
+		}
+	}
+	
+	kdDebugFuncOut(trace);
+	return false;
+}
+
+/*!
+ * Function to set brightness via HAL (if supported by hardware)
+ * \param level		Integer with the level to set, (range: 0 - \ref availableBrightnessLevels )
+ * \param percent	Integer with the brightness percentage to set
+ * \return boolean with result of the operation
+ * \retval true  	if successful
+ * \retval false 	else, if a error occurs
+ */
+bool HardwareInfo::setBrightness ( int level, int percent ){
+	if (trace) kdDebug() << funcinfo << "IN: " << "level: " << level << " percent: " << percent << endl;
+
+	bool retval = false;
+
+	if ((level == -1) && (percent >= 0)) {
+		if (percent == 0) {
+			level = 0;
+		} else if (percent >= 98) {
+			level = (availableBrightnessLevels - 1);
+		} else {
+			level = (int)((float)availableBrightnessLevels * ((float)percent/100.0));
+			if (level > (availableBrightnessLevels -1))
+				level = availableBrightnessLevels -1;
+			kdDebug() << "percentage mapped to new level: " << level << endl;
+		}
+	}
+
+	if (dbus_HAL->isConnectedToDBUS() && dbus_HAL->isConnectedToHAL()) {
+		if (!brightness)
+			checkBrightness();
+
+		if (!brightness || (level < 0 ) || (level >= availableBrightnessLevels)) {
+			kdError() << "Change brightness or requested level not supported " << endl;
+		} else {
+			if (currentBrightnessLevel == level) {
+				kdDebug() << "Brightness level not changed, requested level == current level" << endl;
+				retval = true;
+			} else {
+				if (dbus_HAL->dbusSystemMethodCall( HAL_SERVICE, *udis["laptop_panel"], 
+								    HAL_LPANEL_IFACE, "SetBrightness", 
+								    DBUS_TYPE_INT32, &level,
+								    DBUS_TYPE_INVALID )) {
+					retval = true;
+				} 
+			}
+		}
+	}
+
+	// check for actual brightness level to be sure everything was set correct
+	checkCurrentBrightness();
+	kdDebugFuncOut(trace);
+	return retval;
+} 
+
+/*!
+ * Function to set the CPU frequency policy via HAL. 
+ * \param cpufreq 	enum of cpufreq_type with the policy to set
+ * \param limit 	integer with range 0 - 100 (only if cpufreq == DYNAMIC)
+ * \return boolean with result of the operation
+ * \retval true  	if successful
+ * \retval false 	else, if a error occurs
+ */
+bool HardwareInfo::setCPUFreq ( cpufreq_type cpufreq, int limit ) {
+	if (trace) kdDebug() << funcinfo << "IN: " <<  "cpufreq_type: " << cpufreq << " limit: " << limit << endl;
+
+	if (!cpuFreq) {
+		kdError() << "This machine does not support change the CPU Freq via HAL" << endl;
+		return false;
+	}
+	
+	if (cpuFreqAllowed  == 0) {
+		kdError() << "Could not set CPU Freq, this not the needed privileges." << endl;
+		return false;
+	}
+	
+	if (dbus_HAL->isConnectedToDBUS() && dbus_HAL->isConnectedToHAL()) {
+		dbus_bool_t consider = (dbus_bool_t) getAcAdapter();
+		QStringList dynamic;
+
+		if (checkCurrentCPUFreqPolicy() == cpufreq) {
+			if (cpufreq == DYNAMIC && !cpuFreqGovernor.startsWith("ondemand")) {
+				kdDebug() << "CPU Freq Policy is already DYNAMIC, but not governor is currently "
+					  << "not 'ondemand'. Try to set ondemand governor." << endl;
+			} else {
+				kdDebug() << "Didn't change Policy, was already set." << endl;
+				return true;
+			}
+		}
+
+		switch (cpufreq) {
+			case PERFORMANCE:
+				if (!setCPUFreqGovernor("performance")) {
+					kdError() << "Could not set CPU Freq to performance policy" << endl;
+					return false;
+				}
+				break;
+			case DYNAMIC:
+				dynamic << "ondemand" << "userspace" << "conservative";
+
+				for (QStringList::Iterator it = dynamic.begin(); it != dynamic.end(); it++){
+					kdDebug() << "Try to set dynamic CPUFreq to: " << *it << endl;
+					
+					if (setCPUFreqGovernor((*it).latin1())) {
+						kdDebug() << "Set dynamic successful to: " << *it << endl;
+						break;
+					}
+				}
+			
+				// set dynamic performance limit
+				if (!dbus_HAL->dbusSystemMethodCall( HAL_SERVICE, HAL_COMPUTER_UDI,
+								     HAL_CPUFREQ_IFACE,
+								     "SetCPUFreqPerformance", 
+								     DBUS_TYPE_INT32, &limit,
+								     DBUS_TYPE_INVALID)) {
+					kdError() << "Could not call/set SetCPUFreqPerformance with value: "
+					          << limit << endl;
+				}
+
+				// correct set ondemand
+				if (!dbus_HAL->dbusSystemMethodCall( HAL_SERVICE, HAL_COMPUTER_UDI,
+								     HAL_CPUFREQ_IFACE,
+								     "SetCPUFreqConsiderNice",
+								     DBUS_TYPE_BOOLEAN, &consider,
+								     DBUS_TYPE_INVALID)) {
+					kdError() << "Couldn't set SetCPUFreqConsiderNice for DYNAMIC" << endl;
+				}
+
+				break;
+			case POWERSAVE:
+				if (!setCPUFreqGovernor("powersave")) {
+					kdError() << "Could not set CPU Freq to powersave policy" << endl;
+					return false;
+				}
+				break;
+			default:
+				kdWarning() << "Unknown cpufreq_type: " << cpufreq << endl;
+				return false;
+		}
+		
+		// check if the policy was really set (and emit signal)
+		if (checkCurrentCPUFreqPolicy() == cpufreq) {
+//			update_info_cpufreq_policy_changed = true;
+//			emit currentCPUFreqPolicyChanged();
+			return true;
+		} else {
+			return false;
+		}
+	} else {	
+		return false;
+	}
+}
+
+/*!
+ * Function to set the CPU governor via HAL. 
+ * \param governor	char * with the name of the governor
+ * \return boolean with result of the operation
+ * \retval true  	if successful
+ * \retval false 	else, if a error occurs
+ */
+bool HardwareInfo::setCPUFreqGovernor( const char *governor ) {
+	kdDebugFuncIn(trace);
+
+	int reply;
+	bool ret = true;
+
+	kdDebug() << "Try to set CPUFreq to governor: " << governor << endl;
+	if (!dbus_HAL->dbusSystemMethodCall( HAL_SERVICE, HAL_COMPUTER_UDI, 
+					     HAL_CPUFREQ_IFACE, "SetCPUFreqGovernor",
+					     &reply, DBUS_TYPE_INVALID,
+					     DBUS_TYPE_STRING, &governor, 
+					     DBUS_TYPE_INVALID)) {
+		kdError() << "Could not set CPU Freq to governor: " << governor << endl;
+		ret = false;
+	}
+	
+	kdDebugFuncOut(trace);
+	return ret;
+}
+
+
+/*!
+ * Function to set the powersave mode (incl. e.g. disk settings) via HAL. 
+ * \param  on		boolean which tell if enable/disable powersave mode
+ * \return boolean with result of the operation
+ * \retval true  	if successful
+ * \retval false 	else, if a error occurs
+ */
+bool HardwareInfo::setPowerSave( bool on ) {
+	kdDebugFuncIn(trace);
+
+	bool retval = false;
+
+	if (dbus_HAL->isConnectedToDBUS() && dbus_HAL->isConnectedToHAL()) {
+		dbus_bool_t _tmp = (dbus_bool_t) on;
+		int reply;
+
+#ifdef USE_LIBHAL_POLICYCHECK
+		if (dbus_HAL->isUserPrivileged(PRIV_SETPOWERSAVE, HAL_COMPUTER_UDI) != 0) {
+#else
+		if (true) {
+#endif
+			if (!dbus_HAL->dbusSystemMethodCall( HAL_SERVICE, HAL_COMPUTER_UDI, 
+							     HAL_PM_IFACE, "SetPowerSave",
+							     &reply, DBUS_TYPE_INT32,
+							     DBUS_TYPE_BOOLEAN, &_tmp,
+							     DBUS_TYPE_INVALID)) {
+				kdError() << "Could not call/set SetPowerSave on HAL, " 
+					  << "could be a bug in HAL spec" << endl;
+			} else {
+				retval = true;
+			}
+		} else {
+			kdError() << "The user isn't allowed to call SetPowerSave() on HAL. "
+				  << "Maybe KPowersave run not in a active session." << endl;
+		}
+	} 
+	
+	kdDebugFuncOut(trace);
+	return retval;
+}
+
+/*!
+ * Function to call GetSchedPowerSavings() via HAL. 
+ * \return boolean with result of the operation
+ * \retval true  	if successful
+ * \retval false 	else, if a error occurs
+ */
+bool HardwareInfo::getSchedPowerSavings() {
+	kdDebugFuncIn(trace);
+
+	bool returnval = false;
+
+	if (dbus_HAL->isConnectedToDBUS() && dbus_HAL->isConnectedToHAL()) {
+		dbus_bool_t ret;
+
+		//NOTE: the kernel only allow 1/0 for the related sysfs entry
+		if (dbus_HAL->dbusSystemMethodCall( HAL_SERVICE, HAL_COMPUTER_UDI, 
+						    HAL_CPUFREQ_IFACE, "GetSchedPowerSavings",
+					            &ret, DBUS_TYPE_BOOLEAN, DBUS_TYPE_INVALID)) {
+			schedPowerSavings = ((ret != 0) ? true: false);
+			returnval = true;
+		} else {
+			schedPowerSavings = false;
+			kdWarning() << "Could not call GetSchedPowerSavings() " << endl;
+		}
+	}
+
+	kdDebugFuncOut(trace);
+	return returnval;
+}
+
+/*!
+ * Function to call SetSchedPowerSavings() via HAL. Note: this would only work on
+ * Multiprocessor/-core machines.
+ * \return boolean with result of the operation
+ * \retval true  	if successful
+ * \retval false 	else, if a error occurs
+ */
+bool HardwareInfo::setSchedPowerSavings( bool enable ) {
+	kdDebugFuncIn(trace);
+
+	bool retval = false;
+
+	if (dbus_HAL->isConnectedToDBUS() && dbus_HAL->isConnectedToHAL()) {
+		dbus_bool_t _tmp = (dbus_bool_t) enable;
+
+		//NOTE: the kernel only allow 1/0 for the related sysfs entry
+		if (dbus_HAL->dbusSystemMethodCall( HAL_SERVICE, HAL_COMPUTER_UDI,
+						    HAL_CPUFREQ_IFACE,
+						    "SetCPUFreqPerformance", 
+						    DBUS_TYPE_BOOLEAN, &_tmp,
+						    DBUS_TYPE_INVALID)) {
+			retval = true;
+		} else {
+			kdWarning() << "Could not call SetSchedPowerSavings() " << endl;
+		}
+	}
+
+	kdDebugFuncOut(trace);
+	return retval;
+}
+
+
+// --> HAL method call (trigger actions) section -- END <---
+
+// --> private helper functions/slots to forward/handle events  -- START <--
+//     need this functions to make events from HAL/D-Bus independent
+//     from QT event loop and to allow QT3 D-Bus bindings to get not
+//     blocked by normal KDE/QT (GUI) calls
+/*!
+ * Function to emit the signal for the Power button.
+ */ 
+void HardwareInfo::emitPowerButtonPressed() {
+	if (sessionIsActive) {
+		emit powerButtonPressed();
+	} else {
+		kdWarning() << "Session is not active, don't react on power button event!" << endl;
+	}
+}
+
+/*!
+ * Function to emit the signal for the Sleep button.
+ */
+void HardwareInfo::emitSleepButtonPressed() {
+	if (sessionIsActive) {
+		emit sleepButtonPressed();
+	} else {
+		kdWarning() << "Session is not active, don't react on sleep button event!" << endl;
+	}
+}
+
+/*!
+ * Function to emit the signal for the s2disk button.
+ */
+void HardwareInfo::emitS2diskButtonPressed() {
+	if (sessionIsActive) {
+		emit s2diskButtonPressed();
+	} else {
+		kdWarning() << "Session is not active, don't react on suspend2disk button event!" << endl;
+	}
+}
+
+/*!
+ * Function to emit the signal about changes in the session state
+ */
+void HardwareInfo::emitSessionActiveState() {
+	if (sessionIsActive) {
+		if (!dbus_HAL->aquiredPolicyPowerInterface()) {
+			dbus_HAL->aquirePolicyPowerIface();
+		}
+	} else {
+		if (dbus_HAL->aquiredPolicyPowerInterface()) {
+			dbus_HAL->releasePolicyPowerIface();
+		}
+	}
+
+	emit desktopSessionIsActive(sessionIsActive);
+}
+
+/*!
+ * Function to set the brightess a step up.
+ * \param percentageStep Integer of next step should get set
+ * \return result of the operation
+ * \retval true		if could get set 
+ * \retval false	else
+ */
+bool HardwareInfo::setBrightnessUp(int percentageStep) {
+	kdDebugFuncIn(trace);
+	
+	bool retval = false;
+	
+	checkCurrentBrightness();
+
+	if (supportBrightness() && (getCurrentBrightnessLevel() >= 0) && 
+            (getCurrentBrightnessLevel() != (getMaxBrightnessLevel()-1))) {
+		int setTo = 0;
+		int minPercStep = 10;
+		int currentPerc = (int)(((float)getCurrentBrightnessLevel()/(float)(getMaxBrightnessLevel()-1))*100.0);
+
+		if (percentageStep > 0 && (percentageStep <= (100-currentPerc))) {
+			minPercStep = percentageStep;
+		} 
+
+		if ((currentPerc + minPercStep) > 100) {
+			// set to 100 %
+			setTo = getMaxBrightnessLevel() -1;
+		} else {
+			setTo = (int)(((float)(getMaxBrightnessLevel()-1))*(((float)(currentPerc + minPercStep))/100.0));
+			if ((setTo == getCurrentBrightnessLevel()) && (setTo <  (getMaxBrightnessLevel() -1))) {
+				setTo++;
+			}
+		}
+
+		if (trace) {
+			kdDebug() << "Max: " << getMaxBrightnessLevel() 
+				  << " Current: " << getCurrentBrightnessLevel() 
+				  << " minPercStep: " << minPercStep
+				  << " currentPerc: " << currentPerc
+				  << " setTo: " << setTo << endl;
+		}
+	
+		retval = setBrightness(setTo, -1);
+	}
+ 
+	kdDebugFuncOut(trace);
+	return retval;
+}
+
+/*!
+ * Function to set the brightess a step up.
+ * \param percentageStep Integer of next step should get set
+ * \return result of the operation
+ * \retval true		if could get set 
+ * \retval false	else
+ */
+bool HardwareInfo::setBrightnessDown(int percentageStep) {
+	kdDebugFuncIn(trace);
+
+	bool retval = false;
+
+	checkCurrentBrightness();
+
+	if (supportBrightness() && (getCurrentBrightnessLevel() > 0)) {
+		int setTo = 0;
+		int minPercStep = 10;
+		int currentPerc = (int)(((float)getCurrentBrightnessLevel()/(float)(getMaxBrightnessLevel()-1))*100.0);
+
+		if (percentageStep > 0 && (percentageStep < currentPerc)) {
+			minPercStep = percentageStep;
+		}
+
+		if ((currentPerc - minPercStep) < 0) {
+			setTo = 0;
+		} else {
+			setTo = (int)(((float)(getMaxBrightnessLevel()-1))*(((float)(currentPerc - minPercStep))/100.0));
+			if ((setTo == getCurrentBrightnessLevel()) && (setTo > 0)) {
+				setTo--;
+			}
+		}
+
+		if (trace) {
+			kdDebug() << "Max: " << getMaxBrightnessLevel() 
+				  << " Current: " << getCurrentBrightnessLevel() 
+				  << " minPercStep: " << minPercStep
+				  << " currentPerc: " << currentPerc
+				  << " setTo: " << setTo << endl;
+		}
+
+		retval = setBrightness(setTo, -1);
+	}
+
+	kdDebugFuncOut(trace);
+	return retval;
+}
+
+/*!
+ * Function to handle the signal for the brightness up button/key
+ */
+void HardwareInfo::brightnessUpPressed() {
+	kdDebugFuncIn(trace);
+	
+	if (brightness) {
+		if (!sessionIsActive) {
+			kdWarning() << "Session is not active, don't react on brightness up key event!" << endl;
+		} else {
+			if (currentBrightnessLevel < availableBrightnessLevels) {
+				setBrightnessUp();
+			} else {
+				kdWarning() << "Could not set brightness to higher level, it's already set to max." << endl;
+			}
+		}
+	}
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * Function to handle the signal for the brightness down button/key
+ */
+void HardwareInfo::brightnessDownPressed() {
+	kdDebugFuncIn(trace);
+
+	if (brightness) {
+		if (!sessionIsActive) {
+			kdWarning() << "Session is not active, don't react on brightness down key event!" << endl;
+		} else {
+			if (currentBrightnessLevel > 0) {
+				setBrightnessDown();
+			} else {
+				kdWarning() << "Could not set brightness to lower level, it's already set to min." << endl;
+			}
+		}
+	}
+}
+
+// --> private helper slots to forward/handle events -- END <--
+
+// --> get private members section -- START <---
+
+/*!
+ * The function return the current state of the ac adapter.
+ * \return boolean with the current state 
+ * \retval true 	if adapter is present/connected or unknown
+ * \retval false 	if not 
+ */
+bool HardwareInfo::getAcAdapter() const {
+	return acadapter;
+}
+
+/*!
+ * The function return the current state of the lidclose button.
+ * \return boolean with the current state 
+ * \retval true 	if the lid is closed
+ * \retval false 	if the lid is opend
+ */
+bool HardwareInfo::getLidclose() const {
+	return lidclose;
+}
+
+/*!
+ * The function return the maximal available brightness level
+ * \return Integer with max level or -1 if not supported
+ */
+int HardwareInfo::getMaxBrightnessLevel() const {
+	if (brightness)
+		return availableBrightnessLevels;
+	else
+		return -1;
+}
+
+/*!
+ * The function return the current brightness level
+ * \return Integer with max level or -1 if not supported or unkown
+ */
+int HardwareInfo::getCurrentBrightnessLevel() const {
+	if (brightness)
+		return currentBrightnessLevel;
+	else
+		return -1;
+}
+
+/*!
+ * The function return the current set CPU Frequency Policy
+ * \return Integer with currently set Policy or -1 if not supported or unkown
+ */
+int HardwareInfo::getCurrentCPUFreqPolicy() const {
+	return currentCPUFreqPolicy;
+}
+
+/*!
+ * The function return information if the system support the different
+ * suspend/standby methodes and if the user can call them.
+ * \return struct with information from \ref suspend_states
+ * TODO: check if we maybe should replace this by more different functions
+ */
+SuspendStates HardwareInfo::getSuspendSupport() const {
+	return suspend_states;
+}
+
+/*!
+ * The function return a pointer to the battery collection of primary batteries.
+ * \return BatteryCollection with type == PRIMARY
+ */
+BatteryCollection* HardwareInfo::getPrimaryBatteries() const {
+	return primaryBatteries;
+}
+
+/*!
+ * The function return all batteries
+ * \return QPtrList<Battery>
+ */
+QPtrList<Battery> HardwareInfo::getAllBatteries() const {
+	return BatteryList;
+}
+
+
+/*!
+ * The function return the status of \ref laptop.
+ * \return boolean with info if machine is a laptop 
+ * \retval true 	if a laptop
+ * \retval false 	else/if not a laptop
+ */
+bool HardwareInfo::isLaptop() const {
+	return laptop;
+}
+
+/*!
+ * The function return info if there is a working connection to D-Bus and HAL.
+ * This mean if we get hardwareinformation
+ * \return boolean with info if D-Bus and HAL work
+ * \retval true 	if connected
+ * \retval false 	if not connected
+ */
+bool HardwareInfo::isOnline() const {
+	return (!dbus_terminated && !hal_terminated);
+}
+
+/*!
+ * The function return the status of \ref has_ACPI.
+ * \return boolean with info if machine support ACPI 
+ * \retval true 	if support ACPI
+ * \retval false 	else
+ */
+bool HardwareInfo::hasACPI() const {
+	return has_ACPI;
+}
+
+/*!
+ * The function return the status of \ref has_APM.
+ * \return boolean with info if machine support APM
+ * \retval true 	if support APM
+ * \retval false 	else
+ */
+bool HardwareInfo::hasAPM() const {
+	return has_APM;
+}
+
+/*!
+ * The function return the status of \ref has_PMU.
+ * \return boolean with info if machine support PMU 
+ * \retval true 	if support PMU
+ * \retval false 	else
+ */
+bool HardwareInfo::hasPMU() const {
+	return has_PMU;
+}
+
+/*!
+ * The function return the status of \ref brightness.
+ * \return boolean with info if machine support brightness changes via HAL
+ * \retval true 	if support brightness changes
+ * \retval false 	else
+ */
+bool HardwareInfo::supportBrightness() const {
+	return brightness;
+}
+
+/*!
+ * The function return the status of \ref cpuFreq.
+ * \return boolean with info if machine support change the CPU frequency via HAL
+ * \retval true 	if support brightness changes
+ * \retval false 	else
+ */
+bool HardwareInfo::supportCPUFreq() const {
+	return cpuFreq;
+}
+
+/*!
+ * The function return the status of \ref sessionIsActive.
+ * \return boolean with info if current desktop session is marked in ConsoleKit as activ
+ * \retval true 	if the current session is active
+ * \retval false 	else
+ */
+bool HardwareInfo::currentSessionIsActive() const {
+	return sessionIsActive;
+}
+
+/*!
+ * The function return \ref cpuFreqAllowed and tell by this if the user is allowed
+ * to change the CPU Freq.
+ * \return \ref cpuFreqAllowed
+ * \retval	0 allowed
+ * \retval	1 not allowed
+ * \retval	-1 unknown
+ */
+int HardwareInfo::isCpuFreqAllowed () {
+	cpuFreqAllowed = dbus_HAL->isUserPrivileged( PRIV_CPUFREQ, HAL_COMPUTER_UDI);
+	return cpuFreqAllowed;
+}
+
+/*! check if the org.freedesktop.Policy.Power interface has an owner
+ * \return boolean with info if org.freedesktop.Policy.Power interface has an owner or not
+ * \retval true 	if there is a owner
+ * \retval false 	else
+ */
+bool HardwareInfo::isPolicyPowerIfaceOwned () {
+	return dbus_HAL->isPolicyPowerIfaceOwned();
+}
+
+
+// --> get private members section -- END <---
+
+#include "hardware.moc"