//

// Tweet plugin

//

// @license    Public domain

// @author     MARTINEAU Emeric

//

var add_tweet = new sack(DOKU_BASE + 'lib/plugins/dokuwikitweet/ajax.php') ;

add_tweet.AjaxFailedAlert = '' ;

add_tweet.encodeURIString = false ;

add_tweet.method = "GET" ;

// If not null, a message send

var timeOutSend = null ;

// Reload time (30s per default)

var reloadTime = 30000 ;

// If not null, clear if

var timeOutReload = null ;



//

// Get element

function getElement(id) {

    if (document.getElementById) {

        return document.getElementById(id) ;

    } else if (document.all) {

        return window.document.all[id] ;

    } else if (document.layers) {

        return window.document.layers[id] ;

    }

    

    return null ;

}



//

// Get value of element of form

function getValueElement(id) {

    var input = getElement(id) ; 

    var value = '' ;



    if ((input != null) && (input != undefined)) {

        value = input.value ;

    }

    

    return value ;

}



//

// Send message

function sendMessage() {

    // Clear timeout to reload page

    clearTimeout(timeOutReload) ;



    var pageId = encodeURIComponent(getValueElement('tweet_page_id')) ;

    var user = encodeURIComponent(getValueElement('tweet_user')) ;

    var message = encodeURIComponent(getValueElement('tweet_msg')) ;

    

    if (message.length > 0) {

        if (add_tweet.setVar) {

            add_tweet.setVar('action', 'save') ;

            add_tweet.setVar('pageId', pageId) ;

            add_tweet.setVar('user', user) ;

            add_tweet.setVar('msg', message) ;

                   

            add_tweet.runAJAX() ;    

        } else {    

            add_tweet.runAJAX(

            'action=save' + 

            '&pageId=' + pageId+

            '&user=' + user+

            '&msg=' + message) ;

        }

    }

        

    timeOutSend = setTimeout('reloadPage()', 2000) ;

    

    refreshPage() ;

    

    return false ;

}



//

// Hide item

function hide(id) {

    var tweetForm = getElement(id) ;

        

    tweetForm.style.display='none' ;

    tweetForm.style.visibility='hidden' ;

}



//

// Show item

function show(id) {

    var tweetForm = getElement(id) ;



    tweetForm.style.visibility='visible' ;

    tweetForm.style.display='block' ;

}



//

// Reload page

function reloadPage() {

    window.location.reload() ;

}



//

// Set element to say page is reloading but don't reloading

function refreshPage() {

    var tweetMsg = getElement('tweet_msg') ;

    

    tweetMsg.value = '' ;

    

    show('tweet_reloading') ;

    

    hide('tweet_form') ;

}



// Source from

// http://www.wikistuce.info/doku.php/javascript/limiter_la_saisie_dans_un_textearea

function textLimit(field, maxlen) {

   if (field.value.length > maxlen) {

      field.value = field.value.substring(0, maxlen) ;

   }

}



//

// Auto reload page if message is empty

function autoRefreshPage() {

    // Check if send a message

    var message = encodeURIComponent(getValueElement('tweet_msg')) ;

    

    if ((timeOutSend == null) && (message.length == 0)) {

        refreshPage() ;

        reloadPage() ;

    } else {

        timeOutReload = setTimeout("autoRefreshPage()", reloadTime) ;

    }

}