package fl.video

{

	import flash.accessibility.Accessibility;

	import flash.accessibility.AccessibilityImplementation;

	import flash.accessibility.AccessibilityProperties;

	import flash.display.DisplayObject;

	import flash.events.Event;

	import flash.events.FocusEvent;

	import flash.display.Sprite;

	import fl.video.FLVPlayback;

	import fl.video.VideoEvent;

	import flash.events.TimerEvent;

	import flash.utils.Dictionary;

	import flash.utils.setTimeout;

	import flash.utils.Timer;



	/**
	 * 
     * @langversion 3.0
     * @playerversion Flash 9.0.28.0
	 */
	public class SeekBarAccImpl extends AccessibilityImplementation

	{

		/**
		 *  @private
		 *  Default state for all the components.
		 */
		private static const STATE_SYSTEM_NORMAL : uint = 0x00000000;

		/**
		 *  @private
		 */
		private static const STATE_SYSTEM_FOCUSABLE : uint = 0x00100000;

		/**
		 *  @private
		 */
		private static const STATE_SYSTEM_FOCUSED : uint = 0x00000004;

		/**
		 *  @private
		 */
		private static const STATE_SYSTEM_SELECTABLE : uint = 0x00200000;

		/**
		 *  @private
		 */
		private static const STATE_SYSTEM_SELECTED : uint = 0x00000002;

		/**
		 *  @private
		 */
		private static const STATE_SYSTEM_UNAVAILABLE : uint = 0x00000001;

		/**
		 *  @private
		 */
		private static const EVENT_OBJECT_FOCUS : uint = 0x8005;

		/**
		 *  @private
		 */
		private static const EVENT_OBJECT_VALUECHANGE : uint = 0x800E;

		/**
		 *  @private
		 */
		private static const EVENT_OBJECT_SELECTION : uint = 0x8006;

		/**
		 *  @private
		 */
		private static const EVENT_OBJECT_LOCATIONCHANGE : uint = 0x800B;

		/**
		 *  @private
		 */
		private static const ROLE_SLIDER : uint = 0x33;

		/**
		 *  @private
		 */
		private static const ROLE_SYSTEM_INDICATOR : uint = 0x27;

		/**
		 *  @private
		 */
		private static const ROLE_SYSTEM_PUSHBUTTON : uint = 0x2b;

		/**
		 *  @private (protected)
		 *  A reference to the MovieClip instance that this AccImpl instance
         *  is making accessible.
         *
         * @langversion 3.0
         * @playerversion Flash 9.0.28.0
		 */
		protected var master : Sprite;

		/**
		 *  @private (protected)
		 *  Accessibility Role of the MovieClip being made accessible.
         *
         * @langversion 3.0
         * @playerversion Flash 9.0.28.0
		 */
		protected var role : uint;

		private var _vc : FLVPlayback;

		private var _cachedPercentage : Number;

		private var _timer : Timer;



		/**
		 *  @private (protected)
         *  All subclasses must override this property by returning an array
         *  of strings that contains the events for which to listen.
         *
         * @langversion 3.0
         * @playerversion Flash 9.0.28.0
		 */
		protected function get eventsToHandle () : Array;



		/**
		 *  @private
		 *  All subclasses must implement this function.
		 * 
		 *  @param sprite The Sprite instance that this AccImpl instance
         *  is making accessible.
         *
         * @langversion 3.0
         * @playerversion Flash 9.0.28.0
		 */
		public static function createAccessibilityImplementation (sprite:Sprite) : void;

		/**
		 * Enables accessibility for a component.
		 * This method is required for the compiler to activate
		 * the accessibility classes for a component.
		 * 
         * @langversion 3.0
         * @playerversion Flash 9.0.28.0
		 */
		public static function enableAccessibility () : void;

		/**
		 * @private
         *
         *  Creates a new Accessibility Implementation instance for the specified MovieClip.
		 *
		 *  @param sprite The Sprite instance that this AccImpl instance
         *  makes accessible.
         *
         * @langversion 3.0
         * @playerversion Flash 9.0.28.0
		 */
		public function SeekBarAccImpl (sprite:Sprite);

		/**
		 *  @private
		 *  Returns the system role for the MovieClip.
		 *
		 *  @param childID The child id.
		 *
         *  @return Role associated with the MovieClip.
         *
         * @langversion 3.0
         * @playerversion Flash 9.0.28.0
		 */
		public function get_accRole (childID:uint) : uint;

		/**
		 *  @private
		 *  IAccessible method for returning the value of the slider
		 *  (which would be the value of the item selected).
		 *  The slider should return the value of the current thumb as the value.
		 *
		 *  @param childID uint
		 *
		 *  @return Value String
		 *  @review
		 */
		public function get_accValue (childID:uint) : String;

		/**
		 *  @private
		 *  Returns the name of the component.
		 *
		 *  @param childID uint.
		 *
		 *  @return Name of the component.
		 *
		 *  @tiptext Returns the name of the component
		 *  @helpid 3000
		 */
		public function get_accName (childID:uint) : String;

		/**
		 *  @private
		 *  method for returning the name of the slider
		 *  should return the value
		 *
		 *  @param childID uint
		 *
		 *  @return Name String
		 *  @review
		 */
		protected function getName (childID:uint) : String;

		/**
		 *  @private
		 *  Method to return an array of childIDs.
		 *
         *  @return Array child ids
         *
         * @langversion 3.0
         * @playerversion Flash 9.0.28.0
		 */
		public function getChildIDArray () : Array;

		/**
		 *  @private
		 *  IAccessible method for returning the bounding box of the component or its child element.
		 *
		 *  @param childID:uint
		 *
		 *  @return Location:Object
		 */
		public function accLocation (childID:uint) : *;

		/**
		 *  @private
		 *  IAccessible method for returning the state of the Button.
		 *  States are predefined for all the components in MSAA.
		 *  Values are assigned to each state.
		 *
		 *  @param childID uint
		 *
		 *  @return State uint
		 */
		public function get_accState (childID:uint) : uint;

		/**
		 *  Utility method determines state of the accessible component.
		 */
		protected function getState (childID:uint) : uint;

		/**
		 *  @private
		 *  IAccessible method for returning the Default Action.
		 *
		 *  @param childID The child id.
		 *
         *  @return DefaultAction.
         *
         * @langversion 3.0
         * @playerversion Flash 9.0.28.0
		 */
		public function get_accDefaultAction (childID:uint) : String;

		/**
		 *  @private
		 *  IAccessible method for executing the Default Action.
		 *
		 *  @param childID uint
		 */
		public function accDoDefaultAction (childID:uint) : void;

		/**
		 *  @private
         *
         * @langversion 3.0
         * @playerversion Flash 9.0.28.0
		 */
		private function getStatusName () : String;

		/**
		 *  @private
		 *  Override the generic event handler.
		 *  All AccImpl must implement this to listen
		 *  for events from its master component.
		 */
		protected function eventHandler (event:Event) : void;

		/**
		 *  @private
		 *  This is (kind of) a hack to get around the fact that SeekBarSlider is not 
		 *  an IFocusManagerComponent. It forces focus from accessibility its thumb
		 *  gets focus.
		 */
		private function focusInHandler (event:Event) : void;

		/**
		 *  @private
		 *  Returns a timecode string for a given time in seconds.
		 */
		private function secondsToTime (sec:Number) : String;

		/**
		 *  @private
		 *  Dispatches an accessibility event to notify MSAA of a value change.
		 */
		private function sendAccessibilityEvent (event:TimerEvent) : void;

	}

}