/*! DataTables Bootstrap integration
 * Ã‚Â©2011-2014 SpryMedia Ltd - datatables.net/license
 */

/**
 * DataTables integration for Bootstrap 3. This requires Bootstrap 3 and
 * DataTables 1.10 or newer.
 *
 * This file sets the defaults and adds options to DataTables to style its
 * controls using Bootstrap. See http://datatables.net/manual/styling/bootstrap
 * for further information.
 */
(function (window, document, undefined) {

    var factory = function ($, DataTable) {
        "use strict";


        /* Set the defaults for DataTables initialisation */
        $.extend(true, DataTable.defaults, {
            dom: "<'row'<'col-xs-12'<'col-xs-6'l><'col-xs-6'f>>r>" +
            "<'row'<'col-xs-12't>>" +
            "<'row'<'col-xs-12'<'col-xs-6'i><'col-xs-6'p>>>",
            paginationType: "bootstrap",
            renderer: "bootstrap"
        });


        /* Default class modification */
        $.extend(DataTable.ext.classes, {
            sWrapper: "dataTables_wrapper form-inline dt-bootstrap",
            sFilterInput: "form-control input-sm",
            sLengthSelect: "form-control"
        });


        /* Bootstrap paging button renderer */
        DataTable.ext.renderer.pageButton.bootstrap = function ( settings, host, idx, buttons, page, pages ) {
            var api     = new DataTable.Api( settings );
            var classes = settings.oClasses;
            var lang    = settings.oLanguage.oPaginate;
            var btnDisplay, btnClass, counter=0;

            var attach = function( container, buttons ) {
                var i, ien, node, button;
                var clickHandler = function ( e ) {
                    e.preventDefault();
                    if ( !$(e.currentTarget).hasClass('disabled') ) {
                        api.page( e.data.action ).draw( false );
                    }
                };

                for ( i=0, ien=buttons.length ; i<ien ; i++ ) {
                    button = buttons[i];

                    if ( $.isArray( button ) ) {
                        attach( container, button );
                    }
                    else {
                        btnDisplay = '';
                        btnClass = '';

                        switch ( button ) {
                            case 'ellipsis':
                                btnDisplay = '&hellip;';
                                btnClass = 'disabled';
                                break;

                            case 'first':
                                btnDisplay = lang.sFirst;
                                btnClass = button + (page > 0 ?
                                    '' : ' disabled');
                                break;

                            case 'previous':
                                btnDisplay = lang.sPrevious;
                                btnClass = button + (page > 0 ?
                                    '' : ' disabled');
                                break;

                            case 'next':
                                btnDisplay = lang.sNext;
                                btnClass = button + (page < pages-1 ?
                                    '' : ' disabled');
                                break;

                            case 'last':
                                btnDisplay = lang.sLast;
                                btnClass = button + (page < pages-1 ?
                                    '' : ' disabled');
                                break;

                            default:
                                btnDisplay = button + 1;
                                btnClass = page === button ?
                                    'active' : '';
                                break;
                        }

                        if ( btnDisplay ) {
                            node = $('<li>', {
                                    'class': classes.sPageButton+' '+btnClass,
                                    'id': idx === 0 && typeof button === 'string' ?
                                        settings.sTableId +'_'+ button :
                                        null
                                } )
                                .append( $('<a>', {
                                        'href': '#',
                                        'aria-controls': settings.sTableId,
                                        'data-dt-idx': counter,
                                        'tabindex': settings.iTabIndex
                                    } )
                                    .html( btnDisplay )
                                )
                                .appendTo( container );

                            settings.oApi._fnBindAction(
                                node, {action: button}, clickHandler
                            );

                            counter++;
                        }
                    }
                }
            };

            // IE9 throws an 'unknown error' if document.activeElement is used
            // inside an iframe or frame.
            var activeEl;

            try {
                // Because this approach is destroying and recreating the paging
                // elements, focus is lost on the select button which is bad for
                // accessibility. So we want to restore focus once the draw has
                // completed
                activeEl = $(document.activeElement).data('dt-idx');
            }
            catch (e) {}

            attach(
                $(host).empty().html('<ul class="pagination"/>').children('ul'),
                buttons
            );

            if ( activeEl ) {
                $(host).find( '[data-dt-idx='+activeEl+']' ).focus();
            }
        };


        /*
         * TableTools Bootstrap compatibility
         * Required TableTools 2.1+
         */
        if ( DataTable.TableTools ) {
            // Set the classes that TableTools uses to something suitable for Bootstrap
            $.extend( true, DataTable.TableTools.classes, {
                "container": "DTTT btn-group",
                "buttons": {
                    "normal": "btn btn-default",
                    "disabled": "disabled"
                },
                "collection": {
                    "container": "DTTT_dropdown dropdown-menu",
                    "buttons": {
                        "normal": "",
                        "disabled": "disabled"
                    }
                },
                "print": {
                    "info": "DTTT_print_info"
                },
                "select": {
                    "row": "active"
                }
            } );

            // Have the collection use a bootstrap compatible drop down
            $.extend( true, DataTable.TableTools.DEFAULTS.oTags, {
                "collection": {
                    "container": "ul",
                    "button": "li",
                    "liner": "a"
                }
            } );
        }

    }; // /factory


    // Define as an AMD module if possible
    if (typeof define === 'function' && define.amd) {
        define(['jquery', 'datatables'], factory);
    }
    else if (typeof exports === 'object') {
        // Node/CommonJS
        factory(require('jquery'), require('datatables'));
    }
    else if (jQuery) {
        // Otherwise simply initialise as normal, stopping multiple evaluation
        factory(jQuery, jQuery.fn.dataTable);
    }


})(window, document);

/* Bootstrap style pagination control */
$.extend($.fn.dataTableExt.oPagination, {
    "bootstrap": {
        "fnInit": function (oSettings, nPaging, fnDraw) {
            var oLang = oSettings.oLanguage.oPaginate;
            var fnClickHandler = function (e) {
                e.preventDefault();
                if (oSettings.oApi._fnPageChange(oSettings, e.data.action)) {
                    fnDraw(oSettings);
                }
            };

            $(nPaging).append(
                '<ul class="pagination pagination-sm">' +
                '<li class="first disabled"><a href="#" title="' + oLang.sFirst + '"><span class="glyphicon glyphicon-fast-backward"></span></a></li>' +
                '<li class="prev disabled"><a href="#" title="' + oLang.sPrevious + '"><span class="glyphicon glyphicon-step-backward"></span></a></li>' +
                '<li class="next disabled"><a href="#" title="' + oLang.sNext + '"><span class="glyphicon glyphicon-step-forward"></span></a></li>' +
                '<li class="last disabled"><a href="#" title="' + oLang.sLast + '"><span class="glyphicon glyphicon-fast-forward"></span></a></li>' +
                '</ul>'
            );
            var els = $('a', nPaging);
            $(els[0]).bind('click.DT', {action: "first"}, fnClickHandler);
            $(els[1]).bind('click.DT', {action: "previous"}, fnClickHandler);
            $(els[2]).bind('click.DT', {action: "next"}, fnClickHandler);
            $(els[3]).bind('click.DT', {action: "last"}, fnClickHandler);
        },

        "fnUpdate": function (oSettings, fnDraw) {
            var iListLength = 5;
            var oPaging = oSettings.oInstance.fnPagingInfo();
            var an = oSettings.aanFeatures.p;
            var i, j, sClass, iStart, iEnd, iHalf = Math.floor(iListLength / 2);

            if (oPaging.iTotalPages < iListLength) {
                iStart = 1;
                iEnd = oPaging.iTotalPages;
            } else if (oPaging.iPage <= iHalf) {
                iStart = 1;
                iEnd = iListLength;
            } else if (oPaging.iPage >= oPaging.iTotalPages - iHalf) {
                iStart = oPaging.iTotalPages - iListLength + 1;
                iEnd = oPaging.iTotalPages;
            } else {
                iStart = oPaging.iPage - iHalf + 1;
                iEnd = iStart + iListLength - 1;
            }

            for (i = 0, iLen = an.length; i < iLen; i++) {
                // Remove the middle elements
                $('li:gt(1)', an[i]).filter(':not(.next,.last)').remove();

                // Add the new list items and their event handlers
                for (j = iStart; j <= iEnd; j++) {
                    sClass = j == oPaging.iPage + 1 ? 'class="active"' : "";
                    $("<li " + sClass + '><a href="#">' + j + "</a></li>").insertBefore($(".next,.last", an[i])[0]).bind("click", function (a) {
                        a.preventDefault();
                        oSettings._iDisplayStart = (parseInt($("a", this).text(), 10) - 1) * oPaging.iLength;
                        fnDraw(oSettings)
                    })
                }

                // Add / remove disabled classes from the static elements
                if (oPaging.iPage === 0) $(".first,.prev", an[i]).addClass("disabled"); else $(".first,.prev", an[i]).removeClass("disabled")

                if (oPaging.iPage === oPaging.iTotalPages - 1 || oPaging.iTotalPages === 0) $(".next,.last", an[i]).addClass("disabled"); else $(".next,.last", an[i]).removeClass("disabled")
            }
        }
    }
});

/* API method to get paging information */
$.fn.dataTableExt.oApi.fnPagingInfo = function (oSettings) {
    return {
        "iStart": oSettings._iDisplayStart,
        "iEnd": oSettings.fnDisplayEnd(),
        "iLength": oSettings._iDisplayLength,
        "iTotal": oSettings.fnRecordsTotal(),
        "iFilteredTotal": oSettings.fnRecordsDisplay(),
        "iPage": oSettings._iDisplayLength === -1 ? 0 : Math.ceil(oSettings._iDisplayStart / oSettings._iDisplayLength),
        "iTotalPages": oSettings._iDisplayLength === -1 ? 0 : Math.ceil(oSettings.fnRecordsDisplay() / oSettings._iDisplayLength)
    };
};

// add plugin http://datatables.net/plug-ins/api/fnFilterOnReturn
$.fn.dataTableExt.oApi.fnFilterOnReturn = function (oSettings) {
    var _that = this;

    this.each(function (i) {
        $.fn.dataTableExt.iApiIndex = i;
        var $this = this;
        var anControl = $('input', _that.fnSettings().aanFeatures.f);
        anControl
            .unbind('keyup search input')
            .bind('keypress', function (e) {
                if (e.which == 13) {
                    $.fn.dataTableExt.iApiIndex = i;
                    _that.fnFilter(anControl.val());
                }
            });
        return this;
    });
    return this;
};
