Subversion-Projekte lars-tiefland.ci

/*
 * jQuery Idle Timeout 1.2
 * Copyright (c) 2011 Eric Hynds
 *
 * http://www.erichynds.com/jquery/a-new-and-improved-jquery-idle-timeout-plugin/
 *
 * Depends:
 *  - jQuery 1.4.2+
 *  - jQuery Idle Timer (by Paul Irish, http://paulirish.com/2009/jquery-idletimer-plugin/)
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 *
*/

(function($, win){
        
        var idleTimeout = {
                init: function( element, resume, options ){
                        var self = this, elem;

                        this.warning = elem = $(element);
                        this.resume = $(resume);
                        this.options = options;
                        this.countdownOpen = false;
                        this.failedRequests = options.failedRequests;
                        this._startTimer();
                this.title = document.title;
                        
                        // expose obj to data cache so peeps can call internal methods
                        $.data( elem[0], 'idletimeout', this );
                        
                        // start the idle timer
                        $.idleTimer(options.idleAfter * 1000);
                        
                        // once the user becomes idle
                        $(document).bind("idle.idleTimer", function(){
                                
                                // if the user is idle and a countdown isn't already running
                                if( $.data(document, 'idleTimer') === 'idle' && !self.countdownOpen ){
                                        self._stopTimer();
                                        self.countdownOpen = true;
                                        self._idle();
                                }
                        });
                        
                        // bind continue link
                        this.resume.bind("click", function(e){
                                e.preventDefault();
                                
                                win.clearInterval(self.countdown); // stop the countdown
                                self.countdownOpen = false; // stop countdown
                                self._startTimer(); // start up the timer again
                                self._keepAlive( false ); // ping server
                                options.onResume.call( self.warning ); // call the resume callback
                        });
                },
                
                _idle: function(){
                        var self = this,
                                options = this.options,
                                warning = this.warning[0],
                                counter = options.warningLength;
                                
                        // fire the onIdle function
                        options.onIdle.call(warning);
                        
                        // set inital value in the countdown placeholder
                        options.onCountdown.call(warning, counter);
                        
                        // create a timer that runs every second
                        this.countdown = win.setInterval(function(){
                                if(--counter === 0){
                                        window.clearInterval(self.countdown);
                                        options.onTimeout.call(warning);
                                } else {
                                        options.onCountdown.call(warning, counter);
          document.title = options.titleMessage.replace('%s', counter) + self.title;
                                }
                        }, 1000);
                },
                
                _startTimer: function(){
                        var self = this;

                        this.timer = win.setTimeout(function(){
                                self._keepAlive();
                        }, this.options.pollingInterval * 1000);
                },
                
                _stopTimer: function(){
                        // reset the failed requests counter
                        this.failedRequests = this.options.failedRequests;
                        win.clearTimeout(this.timer);
                },
                
                _keepAlive: function( recurse ){
                        var self = this,
                                options = this.options;
                                
                        //Reset the title to what it was.
                        document.title = self.title;
                        
                        // assume a startTimer/keepAlive loop unless told otherwise
                        if( typeof recurse === "undefined" ){
                                recurse = true;
                        }
                        
                        // if too many requests failed, abort
                        if( !this.failedRequests ){
                                this._stopTimer();
                                options.onAbort.call( this.warning[0] );
                                return;
                        }
                        
                        $.ajax({
                                timeout: options.AJAXTimeout,
                                url: options.keepAliveURL,
                                error: function(){
                                        self.failedRequests--;
                                },
                                success: function(response){
                                        if($.trim(response) !== options.serverResponseEquals){
                                                self.failedRequests--;
                                        }
                                },
                                complete: function(){
                                        if( recurse ){
                                                self._startTimer();
                                        }
                                }
                        });
                }
        };
        
        // expose
        $.idleTimeout = function(element, resume, options){
                idleTimeout.init( element, resume, $.extend($.idleTimeout.options, options) );
                return this;
        };
        
        // options
        $.idleTimeout.options = {
                // number of seconds after user is idle to show the warning
                warningLength: 30,
                
                // url to call to keep the session alive while the user is active
                keepAliveURL: "",
                
                // the response from keepAliveURL must equal this text:
                serverResponseEquals: "OK",
                
                // user is considered idle after this many seconds.  10 minutes default
                idleAfter: 600,
                
                // a polling request will be sent to the server every X seconds
                pollingInterval: 60,
                
                // number of failed polling requests until we abort this script
                failedRequests: 5,
                
                // the $.ajax timeout in MILLISECONDS!
                AJAXTimeout: 250,
                
                // %s will be replaced by the counter value
        titleMessage: 'Warning: %s seconds until log out | ',
                
                /*
                        Callbacks
                        "this" refers to the element found by the first selector passed to $.idleTimeout.
                */
                // callback to fire when the session times out
                onTimeout: $.noop,
                
                // fires when the user becomes idle
                onIdle: $.noop,
                
                // fires during each second of warningLength
                onCountdown: $.noop,
                
                // fires when the user resumes the session
                onResume: $.noop,
                
                // callback to fire when the script is aborted due to too many failed requests
                onAbort: $.noop
        };
        
})(jQuery, window);