/*
 * utils.js
 *
 * Version: $Revision: 1.2 $
 *
 * Date: $Date: 2007/10/15 12:57:51 $
 *
 * Copyright (c) 2004, Hewlett-Packard Company and Massachusetts
 * Institute of Technology.  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 Hewlett-Packard Company nor the name of the
 * Massachusetts Institute of Technology nor the names of their
 * 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
 * HOLDERS 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.
 */

/*
 * Utility Javascript methods for DSpace
 */

// Popup window - here so it can be referred to by several methods
var popupWindow;

// =========================================================
//  Methods for e-person popup window
// =========================================================

// Add to list of e-people on this page -- invoked by eperson popup window
function addEPerson(id, email, name)
{
    var newplace = window.document.forms[0].eperson_id.options.length;
    window.document.forms[0].eperson_id.style.width = '';

    if (newplace > 0 && window.document.forms[0].eperson_id.options[0].value == "")
    {
        newplace = 0;
    }

    // First we check to see if e-person is already there
    for (var i = 0; i < window.document.forms[0].eperson_id.options.length; i++)
    {
        if (window.document.forms[0].eperson_id.options[i].value == id)
        {
            newplace = -1;
        }
    }

    if (newplace > -1)
    {
        window.document.forms[0].eperson_id.options[newplace] = new Option(name + " (" + email + ")", id);
    }
}

// Add to list of groups on this page -- invoked by eperson popup window
function addGroup(id, name)
{
    var newplace = window.document.forms[0].group_ids.options.length;
    window.document.forms[0].eperson_id.style.width = '';

	if (newplace > 0 && window.document.forms[0].group_ids.options[0].value == "")
    {
        newplace = 0;
    }

    // First we check to see if group is already there
    for (var i = 0; i < window.document.forms[0].group_ids.options.length; i++)
    {
        // is it in the list already
        if (window.document.forms[0].group_ids.options[i].value == id && window.document.forms[0].group_ids.options[i].value != "")
        {
            newplace = -1;
        }

        // are we trying to add the new group to the new group on an Edit Group page (recursive)
        if (window.document.forms[0].group_id)
        {
            if (window.document.forms[0].group_id.value == id)
            {
                newplace = -1;
            }
        }
    }

    if (newplace > -1)
    {
        window.document.forms[0].group_ids.options[newplace] = new Option(name + " (" + id + ")", id);
    }
}

function finishEPersonNotEmpty()
{
    if ((window.document.forms[0].eperson_id.options[0] != null) && (window.document.forms[0].eperson_id.options[0].value != ""))
    {
        finishEPerson();
    } else
    {
        return false;
    }
}

// This needs to be invoked in the 'onClick' javascript event for buttons
// on pages with a dspace:selecteperson element in them
function finishEPerson()
{
    selectAll(window.document.forms[0].eperson_id);

	if (popupWindow != null)
	{
		popupWindow.close();
	}
}

// This needs to be invoked in the 'onClick' javascript event for buttons
// on pages with a dspace:selecteperson element in them
function finishGroups()
{
    selectAll(window.document.forms[0].group_ids);

    if (popupWindow != null)
    {
		popupWindow.close();
    }
}

// =========================================================
//  Miscellaneous utility methods
// =========================================================

// Open a popup window (or bring to front if already open)
function popup_window(winURL, winName)
{
    var props = 'scrollBars=yes,resizable=yes,toolbar=no,menubar=no,location=no,directories=no,width=640,height=480';
    popupWindow = window.open(winURL, winName, props);
    popupWindow.focus();
}


// Select all options in a <SELECT> list
function selectAll(sourceList)
{
    for(var i = 0; i < sourceList.options.length; i++)
    {
        if ((sourceList.options[i] != null) && (sourceList.options[i].value != ""))
            sourceList.options[i].selected = true;
    }
    return true;
}

// Deletes the selected options from supplied <SELECT> list
function removeSelected(sourceList)
{
    var maxCnt = sourceList.options.length;
    for(var i = maxCnt - 1; i >= 0; i--)
    {
        if ((sourceList.options[i] != null) && (sourceList.options[i].selected == true))
        {
            sourceList.options[i] = null;
        }
    }
}






//******************************************************
// Functions used by controlled vocabulary add-on
// There might be overlaping with existing functions
//******************************************************

function expandCollapse(node, contextPath) {
	node = node.parentNode;
	var childNode  = (node.getElementsByTagName("ul"))[0];

	if(!childNode) return false;

	var image = node.getElementsByTagName("img")[0];

	if(childNode.style.display != "block") {
		childNode.style.display  = "block";
		image.src = contextPath + "/image/controlledvocabulary/m.gif";
		image.alt = "Collapse search term category";
	} else {
		childNode.style.display  = "none";
		image.src = contextPath + "/image/controlledvocabulary/p.gif";
		image.alt = "Expand search term category";
	}

	return false;
}


function getAnchorText(ahref) {
 	if(isMicrosoft()) return ahref.childNodes.item(0).nodeValue;
	else return ahref.text;
}

function getTextValue(node) {
 	if(node.nodeName == "A") {
 		return getAnchorText(node);
 	} else {
 		return "";
 	}

}


function getParentTextNode(node) {
	var parentNode = node.parentNode.parentNode.parentNode;
	var children = parentNode.childNodes;
	var textNode;
	for(var i=0; i< children.length; i++) {
		var child = children.item(i);
		if(child.className == "value") {
			return child;
		}
	}
	return null;
}

function ec(node, contextPath) {
	expandCollapse(node, contextPath);
	return false;
}


function i(node) {
	return sendBackToParentWindow(node);
}


function getChildrenByTagName(rootNode, tagName) {
	var children = rootNode.childNodes;
	var result = new Array(0);
	if(children == null) return result;
	for(var i=0; i<children.length; i++) {
		if(children[i].tagName == tagName) {
			var elementArray = new Array(1);
			elementArray[0] = children[i];
			result = result.concat(elementArray);
		}
	}
	return result;
}

function popUp(URL) {
	var page;
	page = window.open(URL, 'controlledvocabulary', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=650,height=450');
}


function isNetscape(v) {
		  return isBrowser("Netscape", v);
}

function isMicrosoft(v) {
		  return isBrowser("Microsoft", v);
}

function isMicrosoft() {
		  return isBrowser("Microsoft", 0);
}


function isBrowser(b,v) {
		  browserOk = false;
		  versionOk = false;

		  browserOk = (navigator.appName.indexOf(b) != -1);
		  if (v == 0) versionOk = true;
		  else  versionOk = (v <= parseInt(navigator.appVersion));
		  return browserOk && versionOk;
}








//******************************************************
// ISHS
//******************************************************
function MM_swapImgRestore() { //v3.0
    var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}


function MM_preloadImages() { //v3.0
    var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}


function MM_swapImage() { //v3.0
    var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
    if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


function MM_findObj(n, d) { //v4.01
    var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
    if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
    for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
    if(!x && d.getElementById) x=d.getElementById(n); return x;
}


function swapImage(id, path1, path2) {
	var img = document.getElementById(id);
	var source = makeRelative(img.src);
	switch (source) {
	 case makeRelative(path1):
	   img.src = path2;
	   break;
	 case makeRelative(path2):
	   img.src = path1;
	   break;
	 }
}


function makeRelative(absPath) {
	var index = absPath.lastIndexOf("/");
	var relative = absPath.substring(index+1);
    return relative;
    //return absPath;
}


function mouseOut(imgID, linkID) {
    swapImage(imgID, '/image/bullet.png','/image/bullet2.png');
    document.getElementById(linkID).style.color='#666666';
}


function mouseOver(imgID, linkID){
    swapImage(imgID, '/image/bullet2.png','/image/bullet.png');
    document.getElementById(linkID).style.color='#CD9A9A';
}

function toggleLayer(whichLayer) {
    //swapImage();
    if (document.getElementById)
    {
        // this is the way the standards work
        var style2 = document.getElementById(whichLayer).style;
        // variable = (condition) ? val1 : val2;
        if (style2.display == "none") {
            style2.display = "block";
        }
        else {
            style2.display = "none";
        }
    }
    else if (document.all)
    {
        // this is the way old msie versions work
        var style2 = document.all[whichLayer].style;
        if (style2.display == "none") {
            style2.display = "block";
        }
        else {
            style2.display = "none";
        }
    }
    else if (document.layers)
    {
        // this is the way nn4 works
        var style2 = document.layers[whichLayer].style;
        if (style2.display == "none") {
            style2.display = "block";
        }
        else {
            style2.display = "none";
        }
    }
}


function getLT(){
    return '<';
}
function getGT(){
    return '>';
}



function addCSSRule (selectorText, declarations)
{
    var styleSheet;
    if (document.styleSheets)
    {
        if (document.styleSheets.length === 0)
        {
            var styleElement;
            if (document.createElement && (styleElement = document.createElement('style')))
            {
                styleElement.type = 'text/css';
                document.getElementsByTagName('head')[0].appendChild(styleElement);
                styleSheet = styleElement.sheet;
            }
        }
        if (document.styleSheets.length > 0)
        {
            styleSheet = document.styleSheets[document.styleSheets.length - 1];
            if (styleSheet.insertRule)
            {
                styleSheet.insertRule(
                selectorText + ' { ' + declarations + ' }',
                styleSheet.cssRules.length
                );
            }
        }
        else if (styleSheet.addRule)
        {
            styleSheet.addRule(selectorText, declarations);
        }
    }
}




function changeLanguageFCK(list, fieldname) {
    for (var index = 0; index < list.length; ++index) { 
        $(fieldname + '_' + list.options[index].value).hide();
    }
    $(fieldname + '_' + list.options[list.selectedIndex].value).show();
    editor = FCKeditorAPI.GetInstance('fck_' + fieldname + '_' + list.options[list.selectedIndex].value);
    if (editor && editor.EditorDocument && editor.EditMode == FCK_EDITMODE_WYSIWYG) { 
        editor.SwitchEditMode();
        editor.SwitchEditMode();
    }
    editor.EditorDocument.designMode = "on";
}

function changeLanguage(list, fieldname) {
    for (var index = 0; index < list.length; ++index) { 
        $(fieldname + '_' + list.options[index].value).hide();
    }
    $(fieldname + '_' + list.options[list.selectedIndex].value).show();
}





        function posLeft() {
            return typeof window.pageXOffset != 'undefined' ? window.pageXOffset :document.documentElement && document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft ? document.body.scrollLeft : 0;
        }


function posTop() {
	return typeof window.pageYOffset != 'undefined' ?  window.pageYOffset : document.documentElement && document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop ? document.body.scrollTop : 0;
}







    function prepareTextBoxes(){
     if (!document.getElementsByTagName) return;
     var oi=0;
     var thisObj;
     var objs = document.getElementsByTagName("input");


     for (oi=0; oi<objs.length; oi++) {
      thisObj = objs[oi];
      if(thisObj.getAttribute('type') == ('text' || 'password')){
       thisObj.className = 'text ' + thisObj.className;
      }
     }
    }



function findPos(obj) {
    var curleft = curtop = 0;
    if (obj.offsetParent) {
        curleft = obj.offsetLeft
        curtop = obj.offsetTop
        while (obj = obj.offsetParent) {
            curleft += obj.offsetLeft
            curtop += obj.offsetTop
        }
    }
    return [curleft,curtop];
}

//Dient om te bepalen waar een (onzichtbare) div moet komen te staan om de acties van een ZK-rij 'op te vangen' 
function overlap(divId, targetId, offset){
//    debugger;
    var div = $(divId);
    var target = $(targetId);
    if (div != undefined && target != undefined)
    {
        var targetWidth = Element.getWidth(target);
        if (targetWidth <= 0) {
            setTimeout("overlap('" + divId + "', '" + targetId + "', " + offset + ")", 1000);
        } else {
//            debugger;
            var coordsTopLeft = findPos(target);
            var coordsWrapper = findPos($('wrapper'));
            coordsTopLeft[0] = coordsTopLeft[0] - coordsWrapper[0];
            //trek de breedte van de zwarte rand vd site af.
            var width = targetWidth - offset;
            var height = Element.getHeight(target);
            div.style.width = width + 'px';
            div.style.height = height + 'px';
            div.style.position = 'absolute';
            div.style.left = coordsTopLeft[0] + 'px';
            div.style.top = coordsTopLeft[1] + 'px';
        }
        return true;
    }
    else {
//        alert('div: ' + divId + ', target: ' + targetId);
        return false;
    }

}

function removeHidden (){
     var items = document.getElementsByClassName('button_input_hidden_field');
     for (var i=0; i < items.length; i++){
        var myitem = items[i];
        Element.remove(myitem);
    }
}

function positionDumpster(dumpsterDivId, gridId){
    var grid = $(gridId);
    if (grid != undefined) {
        var topCoords = findPos(grid);
        if (topCoords[0] <= 0) {
            setTimeout("positionDumpster('" + dumpsterDivId + "', '" + gridId + "')", 1000);
        } else {
            var wrapperCoords = findPos($('wrapper'));
            topCoords[0] = topCoords[0] - wrapperCoords[0];
            var dumpsterDiv = $(dumpsterDivId);
            dumpsterDiv.style.left = topCoords[0] + 'px';
            dumpsterDiv.style.top = topCoords[1] + 'px';
            dumpsterDiv.style.width = 400 + 'px';
            dumpsterDiv.style.height = 612 + 'px';
        }
        return true;
    }
    else {
        return false;
    }







}