/*
        paginate table object v2.0 by frequency-decoder.com

        Released under a creative commons Attribution-ShareAlike 2.5 license (http://creativecommons.org/licenses/by-sa/2.5/)

        Please credit frequency decoder in any derivative work - thanks

        You are free:

        * to copy, distribute, display, and perform the work
        * to make derivative works
        * to make commercial use of the work

        Under the following conditions:

                by Attribution.
                --------------
                You must attribute the work in the manner specified by the author or licensor.

                sa
                --
                Share Alike. If you alter, transform, or build upon this work, you may distribute the resulting work only under a license identical to this one.

        * For any reuse or distribution, you must make clear to others the license terms of this work.
        * Any of these conditions can be waived if you get permission from the copyright holder.
*/

var tablePaginater = (function() {
        /*

        Localise the button titles here...

        %p is replaced with the appropriate page number
        %t is replaced with the total number of pages
        
        */
        var tableInfo = {},
            uniqueID  = 0,
            text      = ["Primera Pagina",
						 "Pagina Anterior (Pagina %p)",
						 "Pagina Siguiente (Pagina %p)",
						 "Ultima Pagina (Pagina %t)",
						 "Pagina %p de %t"];
            
        var addClass = function(e,c) {
                if(new RegExp("(^|\\s)" + c + "(\\s|$)").test(e.className)) return;
                e.className += ( e.className ? " " : "" ) + c;
        }; 
        
        /*@cc_on
        /*@if (@_win32)
        var removeClass = function(e,c) {
                e.className = !c ? "" : e.className.replace(new RegExp("(^|\\s)" + c + "(\\s|$)"), " ").replace(/^\s*((?:[\S\s]*\S)?)\s*$/, '$1');
        };
        @else @*/
        var removeClass = function(e,c) {                 
                e.className = !c ? "" : (e.className || "").replace(new RegExp("(^|\\s)" + c + "(\\s|$)"), " ").replace(/^\s\s*/, '').replace(/\s\s*$/, '');
        };
        /*@end
        @*/  
        
        var addEvent = function(obj, type, fn) {
                if( obj.attachEvent ) {
                        obj["e"+type+fn] = fn;
                        obj[type+fn] = function(){obj["e"+type+fn]( window.event );};
                        obj.attachEvent( "on"+type, obj[type+fn] );
                } else {
                        obj.addEventListener( type, fn, true );
                };
        };
        var removeEvent = function(obj, type, fn) {
                try {
                        if( obj.detachEvent ) {
                                obj.detachEvent( "on"+type, obj[type+fn] );
                                obj[type+fn] = null;
                        } else {
                                obj.removeEventListener( type, fn, true );
                        };
                } catch(err) {};
        };
        var stopEvent = function(e) {
                e = e || window.event;
                if(e.stopPropagation) {
                        e.stopPropagation();
                        e.preventDefault();
                };
                
                /*@cc_on@*/
                /*@if(@_win32)
                e.cancelBubble = true;
                e.returnValue  = false;
                /*@end@*/
                return false;
        }; 
        
        var init = function(tableId) {
                var tables = tableId && typeof(tableId) == "string" ? [document.getElementById(tableId)] : document.getElementsByTagName('table'),
                    hook, maxPages, visibleRows, numPages, cp, cb, rowList;
                
                for(var t = 0, tbl; tbl = tables[t]; t++) {
                        if(tbl.className.search(/paginate-([0-9]+)/) == -1) { continue; };

                        if(!tbl.id) { tbl.id = "fdUniqueTableId_" + uniqueID++; };

                        maxPages = tbl.className.search(/max-pages-([0-9]+)/) == -1 ? null : Number(tbl.className.match(/max-pages-([0-9]+)/)[1]);
                        if(maxPages % 2 == 0 && maxPages > 1) { maxPages--; };
                        
                        hook = tbl.getElementsByTagName('tbody');
                        hook = (hook.length) ? hook[0] : tbl;

                        visibleRows = calculateVisibleRows(hook);
                        
                        if(maxPages > (visibleRows / Number(tbl.className.match(/paginate-([0-9]+)/)[1]))) {
                                maxPages = null;
                        };
                        
                        numPages = Math.ceil(visibleRows / Number(tbl.className.match(/paginate-([0-9]+)/)[1]));
                        
                        if(numPages < 2 && !(tbl.id in tableInfo)) {
                                continue;
                        };
                        
                        cp = (tbl.id in tableInfo) ? Math.min(tableInfo[tbl.id].currentPage, numPages) : 1;
                        
                        tableInfo[tbl.id] = {
                                rowsPerPage:Number(tbl.className.match(/paginate-([0-9]+)/)[1]),
                                currentPage:cp,
                                totalRows:hook.getElementsByTagName('tr').length,
                                hook:hook,
                                maxPages:maxPages,
                                numPages:numPages,
                                rowStyle:tbl.className.search(/rowstyle-([\S]+)/) != -1 ? tbl.className.match(/rowstyle-([\S]+)/)[1] : false,
                                callbacks:parseCallback(/^paginationcallback-/i, /paginationcallback-([\S-]+)/ig, tbl.className)
                        };
                        
                        showPage(tbl.id);
                        hook = null;
                };
        };
        
        var parseCallback = function(head, regExp, cname) {
                var cbs    = [],
                    matchs = cname.match(regExp),
                    parts, obj, func;
                
                if(!matchs) { return []; };
                  
                for(var i = 0, mtch; mtch = matchs[i]; i++) {                         
                        mtch = mtch.replace(head, "").replace(/-/g, ".");
                         
                        try {
                                if(mtch.indexOf(".") != -1) {
                                        parts = mtch.split('.');
                                        obj   = window;
                                        for (var x = 0, part; part = obj[parts[x]]; x++) {
                                                if(part instanceof Function) {
                                                        (function() {
                                                                var method = part;
                                                                func = function (data) { method.apply(obj, [data]) };
                                                        })();
                                                } else {
                                                        obj = part;
                                                };
                                        };
                                } else {
                                        func = window[mtch];
                                };
                            
                                if(!(func instanceof Function)) continue;
                                cbs[cbs.length] = func;                              
                        } catch(err) {};
                };
                
                return cbs;                      
        };
                
        var callback = function(tblId, opts) {                
                if(!(tblId in tableInfo) || !(tableInfo[tblId]["callbacks"].length)) return;                
                for(var i = 0, func; func = tableInfo[tblId]["callbacks"][i]; i++) {
                        func(opts || {});
                };
        };
        
        var calculateVisibleRows = function(hook) {
                var trs = hook.rows,
                    cnt = 0,
                    reg = /(^|\s)invisibleRow(\s|$)/;
                
                for(var i = 0, tr; tr = trs[i]; i++) {
                        if(tr.parentNode != hook || tr.getElementsByTagName("th").length || (tr.parentNode && tr.parentNode.tagName.toLowerCase().search(/thead|tfoot/) != -1)) continue;
                        if(tr.className.search(reg) == -1) { cnt++; };
                };
                
                return cnt;
        };
        
        var createButton = function(details, ul, pseudo) {
                var li   = document.createElement("li"),
                    but  = document.createElement(pseudo ? "div" : "a"),
                    span = document.createElement("span");

                if(!pseudo) { 
                        but.href = "#"; 
                        but.title = details.title; 
                };
                
                but.className = details.className;

                ul.appendChild(li);
                li.appendChild(but);
                but.appendChild(span);
                span.appendChild(document.createTextNode(details.text));

                if(!pseudo) { 
                        li.onclick = but.onclick = buttonClick; 
                        if(details.id) { but.id = details.id; };
                };                 
                
                li = but = span = null;
        };
        var removePagination = function(tableId) {
                var wrapT = document.getElementById(tableId + "-fdtablePaginaterWrapTop"),
                    wrapB = document.getElementById(tableId + "-fdtablePaginaterWrapBottom");
                if(wrapT) { wrapT.parentNode.removeChild(wrapT); };
                if(wrapB) { wrapB.parentNode.removeChild(wrapB); };
        };
        var buildPagination = function(tblId) {
                if(!(tblId in tableInfo)) { return; };

                removePagination(tblId);

                var details = tableInfo[tblId];
                
                if(details.numPages < 2) return;
                
                function resolveText(txt, curr) {
                        curr = curr || details.currentPage;
                        return txt.replace("%p", curr).replace("%t", details.numPages);
                };

                if(details.maxPages) {
                        findex = Math.max(0, Math.floor(Number(details.currentPage - 1) - (Number(details.maxPages - 1) / 2)));
                        lindex = findex + Number(details.maxPages);
                        if(lindex > details.numPages) {
                                lindex = details.numPages;
                                findex = Math.max(0, details.numPages - Number(details.maxPages));
                        };
                } else {
                        findex = 0;
                        lindex = details.numPages;
                };
                

                var wrapT = document.createElement("div");
                wrapT.className = "fdtablePaginaterWrap";
                wrapT.id = tblId + "-fdtablePaginaterWrapTop";

                var wrapB = document.createElement("div");
                wrapB.className = "fdtablePaginaterWrap";
                wrapB.id = tblId + "-fdtablePaginaterWrapBottom";

                // Create list scaffold
                var ulT = document.createElement("ul");
                ulT.id  = tblId + "-tablePaginater";

                var ulB = document.createElement("ul");
                ulB.id  = tblId + "-tablePaginaterClone";
                ulT.className = ulB.className = "fdtablePaginater";

                // Add to the wrapper DIVs
                //wrapT.appendChild(ulT); //Agregamos Botones Paginacion Superior
                wrapB.appendChild(ulB); //Agregamos Botones Paginacion Inferior

                // FIRST (only created if maxPages set)
                if(details.maxPages) {
                        createButton({title:text[0], className:"first-page", text:"\u00ab"}, ulT, !findex);
                        createButton({title:text[0], className:"first-page", text:"\u00ab"}, ulB, !findex);
                };
                
                // PREVIOUS (only created if there are more than two pages)
                if(details.numPages > 2) {
                        createButton({title:resolveText(text[1], details.currentPage-1), className:"previous-page", text:"\u2039", id:tblId+"-previousPage"}, ulT, details.currentPage == 1);
                        createButton({title:resolveText(text[1], details.currentPage-1), className:"previous-page", text:"\u2039", id:tblId+"-previousPageC"}, ulB, details.currentPage == 1);
                };
                
                // NUMBERED
                for(var i = findex; i < lindex; i++) {
                        createButton({title:resolveText(text[4], i+1), className:i != (details.currentPage-1) ? "page-"+(i+1) : "currentPage page-"+(i+1), text:(i+1), id:i == (details.currentPage-1) ? tblId + "-currentPage" : ""}, ulT);
                        createButton({title:resolveText(text[4], i+1), className:i != (details.currentPage-1) ? "page-"+(i+1) : "currentPage page-"+(i+1), text:(i+1), id:i == (details.currentPage-1) ? tblId + "-currentPageC" : ""}, ulB);
                };

                // NEXT (only created if there are more than two pages)
                if(details.numPages > 2) {
                        createButton({title:resolveText(text[2], details.currentPage + 1), className:"next-page", text:"\u203a", id:tblId+"-nextPage"}, ulT, details.currentPage == details.numPages);
                        createButton({title:resolveText(text[2], details.currentPage + 1), className:"next-page", text:"\u203a", id:tblId+"-nextPageC"}, ulB, details.currentPage == details.numPages);
                };
                
                // LAST (only created if maxPages set)
                if(details.maxPages) {
                        createButton({title:resolveText(text[3], details.numPages), className:"last-page", text:"\u00bb"}, ulT, lindex == details.numPages);
                        createButton({title:resolveText(text[3], details.numPages), className:"last-page", text:"\u00bb"}, ulB, lindex == details.numPages);
                };
                
                // DOM inject wrapper DIVs (FireFox 2.x Bug: this has to be done here if you use display:table)
                if(document.getElementById(tblId+"-paginationListWrapTop")) {
                        document.getElementById(tblId+"-paginationListWrapTop").appendChild(wrapT);
                } else {
                        document.getElementById(tblId).parentNode.insertBefore(wrapT, document.getElementById(tblId));
                };

                if(document.getElementById(tblId+"-paginationListWrapBottom")) {
                        document.getElementById(tblId+"-paginationListWrapBottom").appendChild(wrapB);
                } else {
                        document.getElementById(tblId).parentNode.insertBefore(wrapB, document.getElementById(tblId).nextSibling);
                };
        };
        
        // The tableSort script uses this function to redraw.
        var tableSortRedraw = function(tableid, identical) {
                if(!tableid || !(tableid in fdTableSort.tableCache) || !(tableid in tableInfo)) { return; };
                
                var dataObj     = fdTableSort.tableCache[tableid],
                    data        = dataObj.data,
                    len1        = data.length,
                    len2        = len1 ? data[0].length - 1 : 0,
                    hook        = dataObj.hook,
                    colStyle    = dataObj.colStyle,
                    rowStyle    = dataObj.rowStyle,
                    colOrder    = dataObj.colOrder,                 
                    page        = tableInfo[tableid].currentPage - 1,
                    d1          = tableInfo[tableid].rowsPerPage * page,
                    d2          = Math.min(tableInfo[tableid].totalRows, d1 + tableInfo[tableid].rowsPerPage), 
                    cnt         = 0,
                    rs          = 0,
                    reg         = /(^|\s)invisibleRow(\s|$)/,                
                    tr, tds, cell, pos;
                
                for(var i = 0; i < len1; i++) {
                        tr = data[i][len2];
                        
                        if(colStyle) {
                                tds = tr.cells;
                                for(thPos in colOrder) {
                                        if(!colOrder[thPos]) removeClass(tds[thPos], colStyle);
                                        else addClass(tds[thPos], colStyle);
                                };
                        };
                        
                        if(tr.className.search(reg) != -1) { continue; };
                        
                        if(!identical) {
                                cnt++;

                                if(cnt > d1 && cnt <= d2) {
                                        if(rowStyle) {
                                                if(rs++ & 1) addClass(tr, rowStyle);
                                                else removeClass(tr, rowStyle);
                                        };
                                        tr.style.display = "";
                                } else {
                                        tr.style.display = "none";
                                };

                                // Netscape 8.1.2 requires the removeChild call or it freaks out, so add the line if you want to support this browser
                                // hook.removeChild(tr);
                                hook.appendChild(tr);
                        };
                };

                tr = tds = hook = null;
        };
        
        var showPage = function(tblId, pageNum) {
                if(!(tblId in tableInfo)) { return; };

                var page = Math.max(0, !pageNum ? tableInfo[tblId].currentPage - 1 : pageNum - 1),
                    d1  = tableInfo[tblId].rowsPerPage * page,
                    d2  = Math.min(tableInfo[tblId].totalRows, d1 + tableInfo[tblId].rowsPerPage),
                    trs = tableInfo[tblId].hook.rows,
                    cnt = 0,
                    rc  = 0,
                    len = trs.length,
                    rs  = tableInfo[tblId].rowStyle,
                    reg = /(^|\s)invisibleRow(\s|$)/,
                    row = [];
                
                for(var i = 0; i < len; i++) {
                        if(trs[i].className.search(reg) != -1 || trs[i].getElementsByTagName("th").length || (trs[i].parentNode && trs[i].parentNode.tagName.toLowerCase().search(/thead|tfoot/) != -1)) { continue; };
                        
                        cnt++;
                        
                        if(cnt > d1 && cnt <= d2) {
                                if(rs) {
                                        if(rc++ & 1) {
                                                addClass(trs[i], rs);
                                        } else {
                                                removeClass(trs[i], rs);
                                        }
                                };
                                trs[i].style.display = "";
                                row[row.length] = trs[i];
                        } else {
                                trs[i].style.display = "none";
                        };
                };

                buildPagination(tblId);
                callback(tblId, {"totalRows":len, "currentPage":(page+1), "rowsPerPage":tableInfo[tblId].rowsPerPage, "visibleRows":row});
        };
        
        var buttonClick = function(e) {
                e = e || window.event;

                var a = this.tagName.toLowerCase() == "a" ? this : this.getElementsByTagName("a")[0];

                if(a.className.search("currentPage") != -1) return false;

                var ul = this;
                while(ul.tagName.toLowerCase() != "ul") ul = ul.parentNode;

                var tblId = ul.id.replace("-tablePaginaterClone","").replace("-tablePaginater", "");

                tableInfo[tblId].lastPage = tableInfo[tblId].currentPage;
                
                var showPrevNext = 0;
                
                if(a.className.search("previous-page") != -1) {
                        tableInfo[tblId].currentPage = tableInfo[tblId].currentPage > 1 ? tableInfo[tblId].currentPage - 1 : tableInfo[tblId].numPages;
                        showPrevNext = 1;
                } else if(a.className.search("next-page") != -1) {
                        tableInfo[tblId].currentPage = tableInfo[tblId].currentPage < tableInfo[tblId].numPages ? tableInfo[tblId].currentPage + 1 : 1;
                        showPrevNext = 2;
                } else if(a.className.search("first-page") != -1) {
                        tableInfo[tblId].currentPage = 1;
                } else if(a.className.search("last-page") != -1) {
                        tableInfo[tblId].currentPage = tableInfo[tblId].numPages;
                } else {
                        tableInfo[tblId].currentPage = parseInt(a.className.match(/page-([0-9]+)/)[1]) || 1;
                };

                showPage(tblId);

                // Focus on the appropriate button (previous, next or the current page)
                // I'm hoping screen readers are savvy enough to indicate the focus event to the user
                if(showPrevNext == 1) {
                        var elem = document.getElementById(ul.id.search("-tablePaginaterClone") != -1 ? tblId + "-previousPageC" : tblId + "-previousPage");
                } else if(showPrevNext == 2) {
                        var elem = document.getElementById(ul.id.search("-tablePaginaterClone") != -1 ? tblId + "-nextPageC" : tblId + "-nextPage");
                } else {
                        var elem = document.getElementById(ul.id.search("-tablePaginaterClone") != -1 ? tblId + "-currentPageC" : tblId + "-currentPage");
                };
                
                if(elem && elem.tagName.toLowerCase() == "a") { elem.focus(); };   
                
                return stopEvent(e);
        };
        
        var onUnLoad = function(e) {
                var tbl, lis, pagination, uls;
                for(tblId in tableInfo) {
                        uls = [tblId + "-tablePaginater", tblId + "-tablePaginaterClone"];
                        for(var z = 0; z < 2; z++) {
                                pagination = document.getElementById(uls[z]);
                                if(!pagination) { continue; };
                                lis = pagination.getElementsByTagName("li");
                                for(var i = 0, li; li = lis[i]; i++) {
                                        li.onclick = null;
                                        if(li.getElementsByTagName("a").length) { li.getElementsByTagName("a")[0].onclick = null; };
                                };
                        };
                };
        };
        
        addEvent(window, "load",   init);
        addEvent(window, "unload", onUnLoad); 
        
        return {                  
                init:                   function(tableId) { init(tableId); },                 
                redraw:                 function(tableid, identical) { tableSortRedraw(tableid, identical); },
                tableIsPaginated:       function(tableId) { return (tableId in tableInfo); },
                changeTranslations:     function(translations) { text = translations; }
        };        
})();