/* 
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

function IsItemSelected(check, target) {
    if (check.value) {
        target.disabled = false;
    }
    else {
        target.disabled = true;
    }
}

function IsCheckEnabled(check, target) {
    if (check.checked) {
        target.disabled = false;
        this.removeClass(target, "dis");
        
    }
    else {
        target.disabled = true;
        this.addClass(target, "dis");
    }
}

function removeNL(s){ 
    return s.replace(/[\n\r\t]/g,""); 
}

function SubmitToolbox(type) {
    var c = "objectToCreate="+type;
    var u = "createObject.php";
    var a = true;
    var pipeline = document.getElementById("pipelineStringField");
    var pipelineType = document.getElementById("pipelineTypeField");
    var pipelineUpdated = document.getElementById("pipelineUpdatedField");
    
    newAjaxRequest(c, u, function(result){
        var resultUid = removeNL(result.responseText);
        //resultUid.replace("\n","").replace("\r","");
        
        pipeline.value += resultUid+",";
        pipelineType.value += type+",";
        pipelineUpdated.value += "0,";
        updateSequencer();
    }, a);
}

// Class manipulation

function hasClass(ele,cls) {
    if (ele.className)
        return ele.className.match(new RegExp('(\\s|^)'+cls+'(\\s|$)'));
}
 
function addClass(ele,cls) {
    if (!this.hasClass(ele,cls)) ele.className += " "+cls;
}
 
function removeClass(ele,cls) {
    if (hasClass(ele,cls)) {
        var reg = new RegExp('(\\s|^)'+cls+'(\\s|$)');
        ele.className=ele.className.replace(reg,' ');
    }
}

//new scripts!
//start here!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

function selectStep(uid) {
    var nodes = document.getElementById("seqContentWrapper").childNodes;
    for (var i = 0; i < nodes.length; i++) {     //loop through childNodes. Skip first node (whitespace)
        if (hasClass(nodes[i], "displayStep")) {    //check if current childNode is a displayStep, not divider or text.
            if (nodes[i].id == uid) {
                if (hasClass(nodes[i], "selected")) {
                    removeClass(nodes[i], "selected");
                }
                else {
                    addClass(nodes[i], "selected");
                }                
            }
            else {
                removeClass(nodes[i], "selected");
            }
        }
    }
    
    // Update selected step field with uid of currently selected step.
    var selectedStepField = document.getElementById("selectedStepField");
    selectedStepField.value = uid;
    
}
                                                                            
function newAjaxRequest(c, u, cb, async) {
    
    var xml;
    var content = c;    //an array of strings, in "key=value"  format.
    // assign a compatible request format
    if (window.XMLHttpRequest) {    //Not IE5, IE6
        xml = new XMLHttpRequest();
    }
    else {                          //IE5, IE6
        xml = new ActiveXObject("Microsoft.XMLHTTP");
    }
    // subscribe the callback function to a response event
    xml.onreadystatechange = function() {
        xml.responseText = "Processing...";
        if (xml.readyState == 4 && xml.status == 200) {
            cb(xml);
        }
    };
    // initialize XMLRequest
    xml.open("POST", u, async);
    xml.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    var contentString = "";
    //iterate through parameters passed in variable c
    if (typeof(content)=='object'&&(input instanceof Array)) {    // parameters were passed as an array of key=value strings
        for (var i = 0; i < content.length; i++) {
            contentString += content[i];
            if (i != (content.length - 1)) {
                contentString += "&";
            }
        }
    }
    else { // single parameter or string already formatted by calling function
        contentString = content;
    }
    // finally send the formatted request
    xml.send(contentString);
}


/*
 * ajaxStepRequest gets  the markup for displaying a step in the sequencer from returnStep.php
 * Using ajax principle allows for editing of pipeline without constantly refreshing the page.
 */

function ajaxStepRequest(UIDS, types) {
    var c = "uids="+UIDS;
    if (types != "") {
        c += "&types="+types;
    }
    var u = "returnStep.php";
    newAjaxRequest(c, u, function(result) {
        document.getElementById("seqContentWrapper").innerHTML = result.responseText;
    }, true);
}

function ajaxInfoRequest(id, el) {
    var uid = id;
    var c = "uid="+uid;
    var u = "getInfo.php";
    newAjaxRequest(c, u, function(result) {
        el.innerHTML = result.responseText;
    }, true);
}

function drawSteps2() {
    var content = document.getElementById("seqContentWrapper");
    var pipeline = document.getElementById("pipelineStringField").value;
    var pipelineTypes = document.getElementById("pipelineTypeField").value;
    var numSteps = document.getElementById("numSteps").value;
    if (numSteps > 0) {
        pipeline = pipeline.replace(/,/g , ",divider,");    //regex search for commas, global (repeat), to represent them with visual dividers.
        pipelineTypes = pipelineTypes.replace(/,/g, ",divider,");
        ajaxStepRequest(pipeline, pipelineTypes);
    }
}

function drawSteps() {
    
}

function updateSequencer() {
    var plString = document.getElementById("pipelineStringField").value;
    var plTypeString = document.getElementById("pipelineTypeField").value;
    var plUpdatedString = document.getElementById("pipelineUpdatedField").value;
    
    
    var pl = stringToArray(plString, ",");    
    var plType = stringToArray(plTypeString, ",");    
    var plUpdated = stringToArray(plUpdatedString, ",");
    
    var count = pl.length;
    
    document.getElementById("numSteps").value = count;
    
    for (var i = 0; i < pl.length; i++) {   // loop through pipeline contents
        if (plUpdated[i] == "0") {   // if the element is not up to date
            // first remove the step representation from the sequencer
            var seqContent = document.getElementById("seqContentWrapper");
            var element = document.getElementById(pl[i]);
            if (element == null) {
                element = document.createElement("div");
                element.name = "placeholder";
                seqContent.appendChild(element);
            }
            if (element.nextSibling) {
                var nextElement = element.nextSibling;
            }
            else {
                var nextElement = document.createElement("div");
                nextElement.name = "placeholderNext";
                seqContent.appendChild(nextElement);
            }
            
            // now request a new step representation and insert it after previousElement
            var holderDiv = document.createElement("div");
            var requestString = "uids="+pl[i];
            
            if (plType[i]) {
                requestString += "&types="+plType[i];
            }
            // globally declare newDiv so it can be passed to the updateDividers function
            var newDiv;
            
            newAjaxRequest(requestString, "returnStep.php", function(result) {
                holderDiv.innerHTML = result.responseText;
                newDiv = holderDiv.childNodes[1];            
                seqContent.replaceChild(newDiv, element);
                if (nextElement.name == "placeholderNext") {
                    seqContent.removeChild(nextElement);
                }
                plUpdated[i] = "1";
            }, false);
            
                       
            // ALTERNATIVE METHOD TO REPLACECHILD!!!
            //seqContent.removeChild(element);
            //seqContent.insertBefore(newDiv, nextElement);
            
            // Now check if dividers are necessary.
            
            //alert("INSERT CODE FOR UPDATEDIVIDERS HERE!");
            updateDividers(newDiv);
        }
    }
    
    // afterwards, convert the arrays back to strings and set to appropriate fields
    var newUpdatedString = arrayToString(plUpdated, ",");
    document.getElementById("pipelineUpdatedField").value = newUpdatedString;
    
}






function updateDividers (element) {
    var seqContent = document.getElementById("seqContentWrapper");
    
    if (element.nextSibling){
        var nextElement = element.nextSibling;
    }
    if (element.previousSibling) {
        var previousElement = element.previousSibling;
    }
    
    if (nextElement){
        if (!hasClass(nextElement, "divider")) {
            var holderDiv = document.createElement("div");
            newAjaxRequest("uids=divider&types=divider", "returnStep.php", function(result) {
                holderDiv.innerHTML = result.responseText;
                var newDivider = holderDiv.childNodes[1];
                seqContent.insertBefore(newDivider, nextElement);
            }, false);
        }
    }
    
    if (previousElement){
        if (!hasClass(previousElement, "divider")) {
            var holderDiv = document.createElement("div");
            newAjaxRequest("uids=divider&types=divider", "returnStep.php", function(result) {
                holderDiv.innerHTML = result.responseText;
                var newDivider = holderDiv.childNodes[1];
                seqContent.insertBefore(newDivider, element);
            }, false);
        }
    }
    
}






function savePipeline (confirmSave) {
    if (confirmSave==true) {
        var answer = confirm("Save changes to pipeline?");
    }
    else {
        var answer = true;
    }
    
    
    if (answer) {
        var pipeline = document.getElementById("pipelineStringField").value;
        pipeline = pipeline.slice(0, pipeline.length - 1);
        var types = document.getElementById("pipelineTypeField").value;
        types = types.slice(0, types.length - 1);
        var session = document.getElementById("sessionField").value;
        var requestString = "uids="+pipeline+"&types="+types+"&sessionUid="+session;
        console.log(requestString);
        
        
        var success;
        newAjaxRequest(requestString, "savesession.php", function(result){
            success = result.responseText;
        }, false);
        console.log(success);
    }
}

function t_setOutOfDate() {
    // if a step is currently selected
    var uid = document.getElementById("selectedStepField").value;
    if (uid == "") {
        alert("No step selected!");
        return;
    }
    
    // convert to arrays for looping
    var plString = document.getElementById("pipelineStringField").value;
    var plTypeString = document.getElementById("pipelineTypeField").value;
    var plUpdatedString = document.getElementById("pipelineUpdatedField").value;
    
    
    var pl = stringToArray(plString, ",");    
    var plType = stringToArray(plTypeString, ",");    
    var plUpdated = stringToArray(plUpdatedString, ",");    
    
    // set the targeted element's tag for "Needs updating"
    plUpdated[pl.indexOf(uid)] = "0";
    
    // then rewrite the content strings and set them to the appropriate fields
    var newUpdatedString = arrayToString(plUpdated, ",");
    document.getElementById("pipelineUpdatedField").value = newUpdatedString;
}

function stringToArray(s, c) {
    var a = s.split(c);
    for (var i = 0; i < a.length; i++) {    // remove empty items
        if (a[i] == "") {
            a.splice(i, 1);
            i--;
        }
    }
    return a;
}

function arrayToString(a, c) {
    var s = "";
    for (var i = 0; i < a.length; i++) {
        if (a[i] != "") {
            s += a[i]+c;
        }
    }
    return s;
}


function editStep() {
    // eerst saven, dan de object type zoeken in de typelist, dan redirecten naar de goede pagina
    savePipeline(false);
    debugger;
    var pipeline = document.getElementById("pipelineStringField").value;
    var pipelineTypes = document.getElementById("pipelineTypeField").value;
    var selectedStep = document.getElementById("selectedStepField").value;
    pipeline = stringToArray(pipeline, ",");
    pipelineTypes = stringToArray(pipelineTypes, ",");
    var stepType = pipelineTypes[pipeline.indexOf(selectedStep)];
    
    var postForm = document.createElement("form");
    postForm.action = stepType.toLowerCase()+"Editor.php";
    postForm.method = "POST";
    var objectUid = document.createElement("input");
    objectUid.type = "hidden";
    objectUid.value = selectedStep;
    postForm.appendChild(objectUid);
    postForm.submit();
}



function moveStep (direction) {
    // misschien maar eens een loadhiddenfields functie maken voor deze meuk?
    debugger;
    var selectedStep = document.getElementById("selectedStepField").value;
    
    if (selectedStep != undefined && selectedStep != "") {
        var pipeline = stringToArray(document.getElementById("pipelineStringField").value, ",");
        var pipelineTypes = stringToArray(document.getElementById("pipelineTypeField").value, ",");
        var updated = stringToArray(document.getElementById("pipelineUpdatedField").value, ",");
    }
    else {
        alert("No step selected! Unable to move");
        return;
    }
    
    var id = pipeline.indexOf(selectedStep);
    // Dit werkt niet, hij replaced dingen de verkeerde kant op. Lelijke versie met placeholder variables maar weer doen?
    pipeline[id] = pipeline.splice(pipeline[id+direction], 1, pipeline[id])[0];
    pipelineTypes[id] = pipelineTypes.splice(pipelineTypes[id+direction], 1, pipelineTypes[id])[0];
    updated[id] = "0";
    updated[id+direction] = "0";
    
    pipeline = arrayToString(pipeline, ",");
    pipelineTypes = arrayToString(pipelineTypes, ",");
    updated = arrayToString(updated, ",");
    
    document.getElementById("pipelineStringField").value = pipeline;
    document.getElementById("pipelineTypeField").value = pipelineTypes;
    document.getElementById("pipelineUpdatedField").value = updated;
    updateSequencer();
    
    
    
}