/*
        paginate table object v1.4 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.
*/
tablePaginater = {
        tableInfo: {},
        uniqueID:0,
        /*

        Localise the button titles here...

        %p is replaced with the appropriate page number
        %t is replaced with the total number of pages

        */
        text: ["First Page","Previous Page (Page %p)","Next Page (Page %p)","Last Page (Page %t)","Page %p of %t"],

        addEvent: function(obj, type, fn, tmp) {
                tmp || (tmp = true);
                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 );
                };
        },
        addClass: function(e,c) {
                if(new RegExp("(^|\\s)" + c + "(\\s|$)").test(e.className)) { return; };
                e.className += ( e.className ? " " : "" ) + c;
        },
        removeClass: function(e,c) {
                e.className = !c ? "" : e.className.replace(new RegExp("(^|\\s*\\b[^-])"+c+"($|\\b(?=[^-]))", "g"), "");
        },
        init: function() {
                //sef: modified lang
                if(typeof(pageination_text) !='undefined' && typeof(pageination_text) == 'object') {
                  tablePaginater.text = pageination_text;
                }
                var tables = document.getElementsByTagName('table');
                for(var t = 0, tbl; tbl = tables[t]; t++) {
                        if(tbl.className.search(/paginate-([0-9]+)/) == -1) { continue; };

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

                        var 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--; };

                        var hook = tbl.getElementsByTagName('tbody');
                        hook = (hook.length) ? hook[0] : tbl;

                        if(maxPages > (hook.getElementsByTagName('tr').length / Number(tbl.className.match(/paginate-([0-9]+)/)[1]))) {
                                maxPages = null;
                        };

                        var numPages = Math.ceil(hook.getElementsByTagName('tr').length / Number(tbl.className.match(/paginate-([0-9]+)/)[1]));
                        if(numPages < 2) { continue; };

                        tablePaginater.tableInfo[tbl.id] = {
                                rowsPerPage:Number(tbl.className.match(/paginate-([0-9]+)/)[1]),
                                currentPage:1,
                                lastPage:-1,
                                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
                        };

                        tablePaginater.showPage(tbl.id, 1);
                        hook = null;
                };
        },
        createButton: function(details, ul, pseudo) {
                var li   = document.createElement("li");
                var but  = document.createElement(pseudo ? "div" : "a");
                var span = document.createElement("span");

                if(!pseudo) { but.href = "#"; };
                if(!pseudo) { 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 = tablePaginater.buttonClick; };
                if(!pseudo && details.id) { but.id = details.id; };

                li = but = span = null;
        },
        buildPagination: function(tblId) {
                if(!(tblId in tablePaginater.tableInfo)) { return; };

                function resolveText(txt, curr) {
                        curr = curr || details.currentPage;
                        return txt.replace("%p", curr).replace("%t", details.numPages);
                }

                var details = tablePaginater.tableInfo[tblId];

                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;
                };

                // Remove old list if present
                if(document.getElementById(tblId + "-fdtablePaginaterWrapTop")) {
                        var wrapT = document.getElementById(tblId + "-fdtablePaginaterWrapTop");
                        var wrapB = document.getElementById(tblId + "-fdtablePaginaterWrapBottom");
                        wrapT.parentNode.removeChild(wrapT);
                        wrapB.parentNode.removeChild(wrapB);
                };

                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);
                wrapB.appendChild(ulB);

                // FIRST (only created if maxPages set)
                if(details.maxPages) {
                        tablePaginater.createButton({title:tablePaginater.text[0], className:"first-page", text:"\u00ab"}, ulT, !findex);
                        tablePaginater.createButton({title:tablePaginater.text[0], className:"first-page", text:"\u00ab"}, ulB, !findex);
                };

                // PREVIOUS (only created if there are more than two pages)
                if(details.numPages > 2) {
                        tablePaginater.createButton({title:resolveText(tablePaginater.text[1], details.currentPage-1), className:"previous-page", text:"\u2039", id:tblId+"-previousPage"}, ulT, details.currentPage == 1);
                        tablePaginater.createButton({title:resolveText(tablePaginater.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++) {
                        tablePaginater.createButton({title:resolveText(tablePaginater.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);
                        tablePaginater.createButton({title:resolveText(tablePaginater.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) {
                        tablePaginater.createButton({title:resolveText(tablePaginater.text[2], details.currentPage + 1), className:"next-page", text:"\u203a", id:tblId+"-nextPage"}, ulT, details.currentPage == details.numPages);
                        tablePaginater.createButton({title:resolveText(tablePaginater.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) {
                        tablePaginater.createButton({title:resolveText(tablePaginater.text[3], details.numPages), className:"last-page", text:"\u00bb"}, ulT, lindex == details.numPages);
                        tablePaginater.createButton({title:resolveText(tablePaginater.text[3], details.numPages), className:"last-page", text:"\u00bb"}, ulB, lindex == details.numPages);
                };

                // DOM inject wrapper DIVs (FireFox 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);
                };
        },
        showPage: function(tblId, pageNum) {
                if(!(tblId in tablePaginater.tableInfo)) { return; };

                var page = !pageNum ? tablePaginater.tableInfo[tblId].currentPage - 1 : pageNum - 1;
                var lpage = tablePaginater.tableInfo[tblId].lastPage;

                var c1 = lpage == -1 || ("fdTableSort" in window && tblId in fdTableSort.tableCache) ? 0 : (lpage - 1) * tablePaginater.tableInfo[tblId].rowsPerPage;
                var c2 = lpage == -1 || ("fdTableSort" in window && tblId in fdTableSort.tableCache) ? tablePaginater.tableInfo[tblId].totalRows : Math.min(tablePaginater.tableInfo[tblId].totalRows, c1 + tablePaginater.tableInfo[tblId].rowsPerPage);

                var d1 = tablePaginater.tableInfo[tblId].rowsPerPage * page;
                var d2 = Math.min(tablePaginater.tableInfo[tblId].totalRows, d1 + tablePaginater.tableInfo[tblId].rowsPerPage);
                
                var arr = [[c1, c2], [d1, d2]];

                var trs = tablePaginater.tableInfo[tblId].hook.getElementsByTagName("tr");

                for(var e = 0; e < 2; e++) {
                        var cnt = 0;
                        for(var i = arr[e][0]; i < arr[e][1]; i++) {
                                if(e) {
                                        if(tablePaginater.tableInfo[tblId].rowStyle && tablePaginater.tableInfo[tblId].rowsPerPage % 2 != 0) {
                                                if(cnt++ & 1) tablePaginater.addClass(trs[i], tablePaginater.tableInfo[tblId].rowStyle);
                                                else tablePaginater.removeClass(trs[i], tablePaginater.tableInfo[tblId].rowStyle);
                                        }
                                        trs[i].style.display = "";
                                } else {
                                        trs[i].style.display = "none";
                                };
                        };
                };

                tablePaginater.buildPagination(tblId);
                if("paginationCallback" in window) { window["paginationCallback"](tblId); };
        },
        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", "");

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

                tablePaginater.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(); };

                if(e.stopPropagation) {
                        e.stopPropagation();
                        e.preventDefault();
                };

                /*@cc_on
                @if(@_win32)
                e.cancelBubble = true;
                e.returnValue = false;
                @end
                @*/
                return false;
        },
        onUnLoad: function(e) {
                var tbl, lis, pagination, uls;
                for(tblId in tablePaginater.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; };
                                };
                        };
                };
        }
};

tablePaginater.addEvent(window, "load",   tablePaginater.init);
tablePaginater.addEvent(window, "unload", tablePaginater.onUnLoad);