--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uiaccelerator_plat/alf_core_toolkit_api/inc/uiacceltk/HuiScheduler.h	Tue Feb 02 07:56:43 2010 +0200
@@ -0,0 +1,171 @@
+/*
+* Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:   ?Description
+*
+*/
+
+
+
+#ifndef __HUISCHEDULER_H__
+#define __HUISCHEDULER_H__
+
+
+#include <e32base.h>
+#include <uiacceltk/HuiCommand.h>
+#include <uiacceltk/HuiObserverArray.h>
+
+
+/* Forward declaration. */
+class CHuiEnv;
+
+
+/**
+ * The scheduler executes commands at certain points in time. There is one
+ * scheduler instance created for each environment. Everyone has access to 
+ * their environment's scheduler, and can send commands with it. Commands
+ * include, for instance, visual animation commands and action commands sent
+ * by controls. An action command would be sent, for example, when a menu 
+ * item is selected or a button is pressed.
+ */
+NONSHARABLE_CLASS(CHuiScheduler) : public CBase
+	{
+public:
+
+	/* Constructors and destructor. */
+
+	/**
+	 * Constructor. This is only done internally in the toolkit. Applications
+	 * cannot construct schedulers.
+	 *
+	 * @param aEnv  Environment that owns the scheduler.
+	 */
+	CHuiScheduler(CHuiEnv& aEnv);
+	
+	/**
+	 * Destructor.
+	 */
+	virtual ~CHuiScheduler();
+
+
+	/* Methods. */
+
+    /**
+     * Called to notify the scheduler that time has passed and it may be 
+     * necessary to trigger new animations and actions.
+     *
+     * @param aElapsedTime  Number of elapsed seconds.
+     */
+    void AdvanceTime(TReal32 aElapsedTime);	
+
+    /**
+     * Post a new command that will be executed immediately or after a
+     * period of time.
+     *
+     * @param aCommand  Command to send.
+     * @param aDelayMilliSeconds  Time to wait before executing.
+     */
+    void PostCommandL(const THuiCommand& aCommand, TInt aDelayMilliSeconds);
+    
+    /** 
+     * Cancel all commands related to an object.
+     *
+     * @param aVisual  Visual.
+     */     
+    void CancelCommands(const TAny* aObject);
+    
+    /** 
+     * Cancel commands related to an object.
+     *
+     * @param aVisual       Visual.
+     & @param aCommandType  Type of command to cancel.
+     */     
+    void CancelCommands(const TAny* aObject, THuiOp aCommandOperation);
+    
+    /** 
+     * Cancel commands related to a specific object.
+     *
+     * @param aControl      Control.
+     * @param aCommandType  Type of command.
+     * @param aParam        Parameter for custom event.
+     */     
+    void CancelCommands(const TAny* aObject, THuiCommandType aCommandType, TInt aParam);
+    
+    /**
+     * Determines how much time is remaining until a command is to be
+     * executed.
+     *
+     * @param aObject       Object.
+     * @param aCommandType  Type of command.
+     *     
+     * @return  Time interval in milliseconds. -1, if no commands found.
+     */
+    TInt TimeUntilCommand(const TAny* aObject, THuiCommandType aCommandType);
+    
+    /**
+     * Counts the number of pending commands.
+     *
+     * @return  Number of commands waiting to be executed.
+     */
+    TInt PendingCount() const;
+    
+
+private:
+    
+    /* Private methods */
+        
+    /**
+     * Removes a pending command from the queue.
+     *
+     * @param aIndex  Index of the pending command.
+     */
+    void RemovePendingCommand(TInt aIndex);
+
+
+private:
+
+	/**
+	 * A command to be executed at a certain point in time. A list of these delayed
+	 * command events is stored in the HuiScheduler.
+	 * 
+	 */
+	 
+    class TDelayedCommand
+        {
+    public:
+    	/** Constructor. A command may be passed in the initialiser. */
+        TDelayedCommand(const THuiCommand* aCommand)
+                : iCommand(aCommand)
+            {
+            }
+        
+        /** The time when this command will be executed. */
+        TTime iExecutionTime;
+
+        /** 
+         * The command that will be executed.
+         * 
+         * @see THuiCommand
+         * */        
+        const THuiCommand* iCommand;
+        };
+
+    /** Scheduler's environment. */
+    CHuiEnv& iEnv;
+    
+    /** Pending commands waiting for execution. */
+    RArray<TDelayedCommand> iPendingCommands;
+    
+	};
+
+#endif  // __HUISCHEDULER_H__