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Inactivity

Kind of class:	public class
Package:	org.casalib.time
Inherits from:	RemovableEventDispatcher < EventDispatcher
Implements:	IRunnable
Version:	10/26/08
Author:	Aaron Clinger, Mike Creighton
Classpath:	org.casalib.time.Inactivity
File last modified:	Monday, 01 December 2008, 11:16:36

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/*
    CASA Lib for ActionScript 3.0
    Copyright (c) 2008, Aaron Clinger & Contributors of CASA Lib
    All rights reserved.
    
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
    
    - Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.
    
    - Redistributions in binary form must reproduce the above copyright notice,
      this list of conditions and the following disclaimer in the documentation
      and/or other materials provided with the distribution.
    
    - Neither the name of the CASA Lib nor the names of its contributors
      may be used to endorse or promote products derived from this software
      without specific prior written permission.
    
    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.
*/
package org.casalib.time {
    import flash.events.Event;
    import flash.events.KeyboardEvent;
    import flash.events.MouseEvent;
    import org.casalib.control.IRunnable;
    import org.casalib.events.InactivityEvent;
    import org.casalib.events.RemovableEventDispatcher;
    import org.casalib.time.Interval;
    import org.casalib.util.StageReference;
    import org.casalib.time.Stopwatch;
    
    
    [Event(name="activated", type="org.casalib.events.InactivityEvent")]
    [Event(name="inactive", type="org.casalib.events.InactivityEvent")]
    
    /**
        Detects user inactivity by checking for a void in mouse movement and key presses.
        
        @author Aaron Clinger
        @author Mike Creighton
        @version 10/26/08
        @usageNote You must first initialize {@link StageReference} before using this class.
        @example
            <code>
                package {
                    import flash.display.MovieClip;
                    import org.casalib.time.Inactivity;
                    import org.casalib.util.StageReference;
                    import org.casalib.events.InactivityEvent;
                    
                    
                    public class MyExample extends MovieClip {
                        protected var _inactivity:Inactivity;
                        
                        
                        public function MyExample() {
                            super();
                            
                            StageReference.setStage(this.stage);
                            
                            this._inactivity = new Inactivity(3000);
                            this._inactivity.addEventListener(InactivityEvent.INACTIVE, this.onUserInactive);
                            this._inactivity.addEventListener(InactivityEvent.ACTIVATED, this.onUserActivated);
                            this._inactivity.start();
                        }
                        
                        public function onUserInactive(e:InactivityEvent):void {
                            trace("User inactive for " + e.milliseconds + " milliseconds.");
                        }
                        
                        public function onUserActivated(e:InactivityEvent):void {
                            trace("User active after being inactive for " + e.milliseconds + " milliseconds.");
                        }
                    }
                }
            </code>
    */
    public class Inactivity extends RemovableEventDispatcher implements IRunnable {
        protected var _interval:Interval;
        protected var _stopwatch:Stopwatch;
        
        
        /**
            Creates an Inactivity.
            
            @param milliseconds: The time until a user is considered inactive.
            @usageNote You must first initialize {@link StageReference} before using this class.
        */
        public function Inactivity(milliseconds:uint) {
            super();
            
            this._interval  = Interval.setTimeout(this._userInactive, milliseconds);
            this._stopwatch = new Stopwatch();
        }
        
        /**
            Starts detecting inactivity.
        */
        public function start():void {
            if (this._interval.running)
                return;
            
            StageReference.getStage().addEventListener(Event.RESIZE, this._userInput);
            StageReference.getStage().addEventListener(KeyboardEvent.KEY_DOWN, this._userInput);
            StageReference.getStage().addEventListener(KeyboardEvent.KEY_UP, this._userInput);
            StageReference.getStage().addEventListener(MouseEvent.MOUSE_DOWN, this._userInput);
            StageReference.getStage().addEventListener(MouseEvent.MOUSE_MOVE, this._userInput);
            
            this._stopwatch.start();
            this._interval.start();
        }
        
        /**
            Stops detecting inactivity.
        */
        public function stop():void {
            this._interval.reset();
            
            StageReference.getStage().removeEventListener(Event.RESIZE, this._userInput);
            StageReference.getStage().removeEventListener(KeyboardEvent.KEY_DOWN, this._userInput);
            StageReference.getStage().removeEventListener(KeyboardEvent.KEY_UP, this._userInput);
            StageReference.getStage().removeEventListener(MouseEvent.MOUSE_DOWN, this._userInput);
            StageReference.getStage().removeEventListener(MouseEvent.MOUSE_MOVE, this._userInput);
        }
        
        override public function destroy():void {
            this.stop();
            this._interval.destroy();
            
            super.destroy();
        }
        
        /**
            @sends InactivityEvent#INACTIVE - Dispatched when the user is inactive.
        */
        protected function _userInactive():void {
            this._interval.stop();
            
            var event:InactivityEvent = new InactivityEvent(InactivityEvent.INACTIVE);
            event.milliseconds        = this._interval.delay;
            
            this.dispatchEvent(event);
            
            this._stopwatch.start();
        }
        
        /**
            @sends InactivityEvent#ACTIVATED - Dispatched when the user becomes active after a period of inactivity.
        */
        protected function _userInput(e:*):void {
            if (!this._interval.running) {
                var event:InactivityEvent = new InactivityEvent(InactivityEvent.ACTIVATED);
                event.milliseconds        = this._stopwatch.time + this._interval.delay;
                
                this.dispatchEvent(event);
                
                this._stopwatch.stop();
            }
            
            this._interval.reset();
            this._interval.start();
        }
    }
}

Detects user inactivity by checking for a void in mouse movement and key presses.

Usage note:

You must first initialize StageReference before using this class.

Example:

package {
    import flash.display.MovieClip;
    import org.casalib.time.Inactivity;
    import org.casalib.util.StageReference;
    import org.casalib.events.InactivityEvent;


    public class MyExample extends MovieClip {
        protected var _inactivity:Inactivity;


        public function MyExample() {
            super();

            StageReference.setStage(this.stage);

            this._inactivity = new Inactivity(3000);
            this._inactivity.addEventListener(InactivityEvent.INACTIVE, this.onUserInactive);
            this._inactivity.addEventListener(InactivityEvent.ACTIVATED, this.onUserActivated);
            this._inactivity.start();
        }

        public function onUserInactive(e:InactivityEvent):void {
            trace("User inactive for " + e.milliseconds + " milliseconds.");
        }

        public function onUserActivated(e:InactivityEvent):void {
            trace("User active after being inactive for " + e.milliseconds + " milliseconds.");
        }
    }
}

Events broadcasted to listeners:

InactivityEvent with type: INACTIVE - Dispatched when the user is inactive.
InactivityEvent with type: ACTIVATED - Dispatched when the user becomes active after a period of inactivity.

Summary

Constructor

Inactivity (milliseconds:uint)
- Creates an Inactivity.

Instance properties

Instance properties inherited from RemovableEventDispatcher

_isDestroyed _listenerManager destroyed

Instance methods

start : void
- Starts detecting inactivity.
stop : void
- Stops detecting inactivity.
destroy : void

Instance methods inherited from RemovableEventDispatcher

addEventListener destroy removeEventListener removeEventListeners removeEventsForListener removeEventsForType

Constructor

Inactivity

public function Inactivity (

milliseconds:uint)

Creates an Inactivity.

Parameters:

milliseconds:

The time until a user is considered inactive.

Usage note:

You must first initialize StageReference before using this class.

Instance methods

destroy

override public function destroy (

) : void

Overrides:

RemovableEventDispatcher.destroy

start

public function start (

) : void

Starts detecting inactivity.

Specified by:

IRunnable.start

stop

public function stop (

) : void

Stops detecting inactivity.

Specified by:

IRunnable.stop