epoc32/include/mw/lbttriggeringsystemsettingschangeeventnotifier.h
branchSymbian2
changeset 2 2fe1408b6811
child 4 837f303aceeb
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/epoc32/include/mw/lbttriggeringsystemsettingschangeeventnotifier.h	Tue Mar 16 16:12:26 2010 +0000
@@ -0,0 +1,123 @@
+/*
+* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
+* which accompanies this distribution, and is available
+* at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  location triggering server client interface
+*
+*/
+
+
+
+#ifndef LBTTRIGGERINGSYSTEMSETTINGSCHANGEEVENTNOTIFIER_H
+#define LBTTRIGGERINGSYSTEMSETTINGSCHANGEEVENTNOTIFIER_H
+
+#include <lbt.h>
+#include <lbttriggeringsystemsettingschangeeventobserver.h>
+
+/**
+ * Helper class to receive triggering system settings change event 
+ * through observer interface. 
+ *
+ * @see RLbt::NotifyTriggeringSystemSettingChange
+ *
+ * @lib lbt.lib
+ *
+ * @since S60 5.1
+ */
+class CLbtTriggeringSystemSettingsChangeEventNotifier : public CActive
+    {
+public:
+    /**
+     * Construct a triggering system settings change event notifier object. 
+     *
+     * When the object is constructed. The triggering
+     * system settings change  notification request is not 
+     * issued to the Location Triggering Server. Client 
+     * shall call 
+     * CLbtTriggeringSystemSettingsChangeEventNotifier::Start() 
+     * to start notification.
+     *
+     * @param[in] aLbt A referece to RLbt object. The subsession 
+     * must be opened. Otherwise a panic is raised.
+     * @param[in] aObserver A referece to the 
+     * observer object to receive triggering system setting 
+     * change event.
+     * @param[in] aPriority An integer specifying the 
+     * priority of this active object. CActive::TPriority 
+     * defines a standard set of priorities. 
+     *
+     * @panic LocTriggering ELbtServerBadHandle If the 
+     * subsession of aLbt is not opened.
+     */
+     IMPORT_C static CLbtTriggeringSystemSettingsChangeEventNotifier* NewL(
+        RLbt& aLbt,
+        MLbtTriggeringSystemSettingsChangeEventObserver& aObserver,
+        TInt aPriority = CActive::EPriorityStandard);
+
+    /**
+     * Destructor. 
+     *
+     * If the notification is started, the 
+     * destructor will cancel the notification.
+     */
+    IMPORT_C ~CLbtTriggeringSystemSettingsChangeEventNotifier();
+
+    /**
+     * Start triggering system settings change event notification. 
+     *
+     * After this function is called, when triggering 
+     * system settings are changed, the
+     * client will be notified from the observer interface.
+     * 
+     * Client shall call Cancel() function to stop the
+     * triggering system settings change event notification.
+     */
+    IMPORT_C void Start();
+
+private:
+    //Derived from CActive
+    void RunL();
+    TInt RunError( TInt aError );
+    void DoCancel();
+
+private:
+    /**
+     * Default constructor
+     */
+    CLbtTriggeringSystemSettingsChangeEventNotifier(
+        RLbt& aLbt,
+        MLbtTriggeringSystemSettingsChangeEventObserver& aObserver,
+        TInt aPriority = CActive::EPriorityStandard );
+
+    /**
+     * Symbian 2nd phase constructor
+     */
+    void ConstructL();
+
+private:
+    /**
+     * Triggering system setting.
+     */
+    TLbtTriggeringSystemSettings iSettings;
+    
+    /**
+     * Reference to Lbt subsession.
+     */
+    RLbt& iLbt;
+    
+    /**
+     * Reference to triggering system settings change observer,
+     */
+    MLbtTriggeringSystemSettingsChangeEventObserver& iObserver; 
+    };
+
+#endif //LBTTRIGGERINGSYSTEMSETTINGSCHANGEEVENTNOTIFIER_H