bootstrap-table/src/extensions/filter-control/bootstrap-table-filter-control.js

/**
 * @author: Dennis Hernández
 * @webSite: http://djhvscf.github.io/Blog
 * @version: v2.0.0
 */

!function ($) {

    'use strict';

    var sprintf = $.fn.bootstrapTable.utils.sprintf,
        objectKeys = $.fn.bootstrapTable.utils.objectKeys;

    var addOptionToSelectControl = function (selectControl, value, text) {
        value = $.trim(value);
        selectControl = $(selectControl.get(selectControl.length - 1));
        if (existOptionInSelectControl(selectControl, value)) {
            selectControl.append($("<option></option>")
                .attr("value", value)
                .text($('<div />').html(text).text()));

            // Sort it. Not overly efficient to do this here
            var $opts = selectControl.find('option:gt(0)');
            $opts.sort(function (a, b) {
                a = $(a).text().toLowerCase();
                b = $(b).text().toLowerCase();
                if ($.isNumeric(a) && $.isNumeric(b)) {
                    // Convert numerical values from string to float.
                    a = parseFloat(a);
                    b = parseFloat(b);
                }
                return a > b ? 1 : a < b ? -1 : 0;
            });

            selectControl.find('option:gt(0)').remove();
            selectControl.append($opts);
        }
    };

    var existOptionInSelectControl = function (selectControl, value) {
        var options = selectControl.get(selectControl.length - 1).options;
        for (var i = 0; i < options.length; i++) {
            if (!value || options[i].value === value.toString()) {
                //The value is not valid to add
                return false;
            }
        }

        //If we get here, the value is valid to add
        return true;
    };

    var fixHeaderCSS = function (that) {
        that.$tableHeader.css('height', '77px');
    };

    var getCurrentHeader = function (that) {
        var header = that.$header;
        if (that.options.height) {
            header = that.$tableHeader;
        }

        return header;
    };

    var getCurrentSearchControls = function (that) {
        var searchControls = 'select, input';
        if (that.options.height) {
            searchControls = 'table select, table input';
        }

        return searchControls;
    };

    var copyValues = function (that) {
        var header = getCurrentHeader(that),
            searchControls = getCurrentSearchControls(that);

        that.options.valuesFilterControl = [];

        header.find(searchControls).each(function () {
            that.options.valuesFilterControl.push(
                {
                    field: $(this).closest('[data-field]').data('field'),
                    value: $(this).val()
                });
        });
    };

    var setValues = function(that) {
        var field = null,
            result = [],
            header = getCurrentHeader(that),
            searchControls = getCurrentSearchControls(that);

        if (that.options.valuesFilterControl.length > 0) {
            header.find(searchControls).each(function (index, ele) {
                field = $(this).closest('[data-field]').data('field');
                result = $.grep(that.options.valuesFilterControl, function (valueObj) {
                    return valueObj.field === field;
                });

                if (result.length > 0) {
                    $(this).val(result[0].value);
                }
            });
        }
    };

    var collectBootstrapCookies = function cookiesRegex() {
        var cookies = [],
            foundCookies = document.cookie.match(/(?:bs.table.)(\w*)/g);

        if (foundCookies) {
            $.each(foundCookies, function (i, cookie) {
                if (/./.test(cookie)) {
                    cookie = cookie.split(".").pop();
                }

                if ($.inArray(cookie, cookies) === -1) {
                    cookies.push(cookie);
                }
            });
            return cookies;
        }
    };

    var initFilterSelectControls = function (bootstrapTable) {
        var data = bootstrapTable.options.data,
            itemsPerPage = bootstrapTable.pageTo < bootstrapTable.options.data.length ? bootstrapTable.options.data.length : bootstrapTable.pageTo,

            isColumnSearchableViaSelect = function (column) {
                return column.filterControl && column.filterControl.toLowerCase() === 'select' && column.searchable;
            },

            isFilterDataNotGiven = function (column) {
                return column.filterData === undefined || column.filterData.toLowerCase() === 'column';
            },

            hasSelectControlElement = function (selectControl) {
                return selectControl && selectControl.length > 0;
            };

        for (var i = bootstrapTable.pageFrom - 1; i < bootstrapTable.pageTo; i++) {

            $.each(bootstrapTable.header.fields, function (j, field) {
                var column = bootstrapTable.columns[$.fn.bootstrapTable.utils.getFieldIndex(bootstrapTable.columns, field)],
                    selectControl = $('.' + column.field);


                if (isColumnSearchableViaSelect(column) && isFilterDataNotGiven(column) && hasSelectControlElement(selectControl)) {
                    if (selectControl.get(selectControl.length - 1).options.length === 0) {
                        //Added the default option
                        addOptionToSelectControl(selectControl, '', '');
                    }

                    //Added a new value
                    var fieldValue = data[i][field],
                        formattedValue = $.fn.bootstrapTable.utils.calculateObjectValue(bootstrapTable.header, bootstrapTable.header.formatters[j], [fieldValue, data[i], i], fieldValue);

                    addOptionToSelectControl(selectControl, fieldValue, formattedValue);
                }
            });
        }

    };

    var createControls = function (that, header) {
        var addedFilterControl = false,
            isVisible,
            html,
            timeoutId = 0;

        $.each(that.columns, function (i, column) {
            isVisible = 'hidden';
            html = [];

            if (!column.visible) {
                return;
            }

            if (!column.filterControl) {
                html.push('<div style="height: 34px;"></div>');
            } else {
                html.push('<div style="margin: 0 2px 2px 2px;" class="filterControl">');

                var nameControl = column.filterControl.toLowerCase();
                if (column.searchable && that.options.filterTemplate[nameControl]) {
                    addedFilterControl = true;
                    isVisible = 'visible';
                    html.push(that.options.filterTemplate[nameControl](that, column.field, isVisible));
                }
            }

            $.each(header.children().children(), function (i, tr) {
                tr = $(tr);
                if (tr.data('field') === column.field) {
                    tr.find('.fht-cell').append(html.join(''));
                    return false;
                }
            });

            if (column.filterData !== undefined && column.filterData.toLowerCase() !== 'column') {
                var filterDataType = getFilterDataMethod(filterDataMethods, column.filterData.substring(0, column.filterData.indexOf(':')));

                if (filterDataType !== null) {
                    var filterDataSource = column.filterData.substring(column.filterData.indexOf(':') + 1, column.filterData.length),
                        selectControl = $('.' + column.field);

                    addOptionToSelectControl(selectControl, '', '');
                    filterDataType(filterDataSource, selectControl);
                } else {
                    throw new SyntaxError('Error. You should use any of this allowed filter data methods: ' + filterDataAllowedMethods.join(', ') + '. Use like this: var: {key: "value"}');
                }
            }
        });

        if (addedFilterControl) {
            header.off('keyup', 'input').on('keyup', 'input', function (event) {
                clearTimeout(timeoutId);
                timeoutId = setTimeout(function () {
                    that.onColumnSearch(event);
                }, that.options.searchTimeOut);
            });

            header.off('change', 'select').on('change', 'select', function (event) {
                clearTimeout(timeoutId);
                timeoutId = setTimeout(function () {
                    that.onColumnSearch(event);
                }, that.options.searchTimeOut);
            });

            header.off('mouseup', 'input').on('mouseup', 'input', function (event) {
                var $input = $(this),
                oldValue = $input.val();

                if (oldValue === "") {
                    return;
                }

                setTimeout(function(){
                    var newValue = $input.val();

                    if (newValue === "") {
                        clearTimeout(timeoutId);
                        timeoutId = setTimeout(function () {
                            that.onColumnSearch(event);
                        }, that.options.searchTimeOut);
                    }
                }, 1);
            });

            if (header.find('.date-filter-control').length > 0) {
                $.each(that.columns, function (i, column) {
                    if (column.filterControl !== undefined && column.filterControl.toLowerCase() === 'datepicker') {
                        header.find('.date-filter-control.' + column.field).datepicker(column.filterDatepickerOptions)
                            .on('changeDate', function (e) {
                                //Fired the keyup event
                                $(e.currentTarget).keyup();
                            });
                    }
                });
            }
        } else {
            header.find('.filterControl').hide();
        }
    };

    var getDirectionOfSelectOptions = function (alignment) {
        alignment = alignment === undefined ? 'left' : alignment.toLowerCase();

        switch (alignment) {
            case 'left':
                return 'ltr';
            case 'right':
                return 'rtl';
            case 'auto':
                return 'auto';
            default:
                return 'ltr'
        }
    };

    var filterDataMethods =
        {
            'var': function (filterDataSource, selectControl) {
                var variableValues = window[filterDataSource];
                for (var key in variableValues) {
                    addOptionToSelectControl(selectControl, key, variableValues[key]);
                }
            },
            'url': function (filterDataSource, selectControl) {
                $.ajax({
                    url: filterDataSource,
                    dataType: 'json',
                    success: function (data) {
                        $.each(data, function (key, value) {
                            addOptionToSelectControl(selectControl, key, value);
                        });
                    }
                });
            },
            'json':function (filterDataSource, selectControl) {
                var variableValues = JSON.parse(filterDataSource);
                for (var key in variableValues) {
                    addOptionToSelectControl(selectControl, key, variableValues[key]);
                }
            }
        };

    var getFilterDataMethod = function (objFilterDataMethod, searchTerm) {
        var keys = Object.keys(objFilterDataMethod);
        for (var i = 0; i < keys.length; i++) {
            if (keys[i] === searchTerm) {
                return objFilterDataMethod[searchTerm];
            }
        }
        return null;
    };

    $.extend($.fn.bootstrapTable.defaults, {
        filterControl: false,
        onColumnSearch: function (field, text) {
            return false;
        },
        filterShowClear: false,
        alignmentSelectControlOptions: undefined,
        //internal variables
        valuesFilterControl: [],
        filterTemplate: {
            input: function (that, field, isVisible) {
                return sprintf('<input type="text" class="form-control %s" style="width: 100%; visibility: %s">', field, isVisible);
            },
            select: function (that, field, isVisible) {
                return sprintf('<select class="%s form-control" style="width: 100%; visibility: %s" dir="%s"></select>',
                    field, isVisible, getDirectionOfSelectOptions(that.options.alignmentSelectControlOptions))
            },
            datepicker: function (that, field, isVisible) {
                return sprintf('<input type="text" class="date-filter-control %s form-control" style="width: 100%; visibility: %s">', field, isVisible);
            }
        }
    });

    $.extend($.fn.bootstrapTable.COLUMN_DEFAULTS, {
        filterControl: undefined,
        filterData: undefined,
        filterDatepickerOptions: undefined,
        filterStrictSearch: false
    });

    $.extend($.fn.bootstrapTable.Constructor.EVENTS, {
        'column-search.bs.table': 'onColumnSearch'
    });

    $.extend($.fn.bootstrapTable.defaults.icons, {
        clear: 'glyphicon-trash icon-clear'
    });

    var BootstrapTable = $.fn.bootstrapTable.Constructor,
        _init = BootstrapTable.prototype.init,
        _initToolbar = BootstrapTable.prototype.initToolbar,
        _initHeader = BootstrapTable.prototype.initHeader,
        _initBody = BootstrapTable.prototype.initBody,
        _initSearch = BootstrapTable.prototype.initSearch;

    BootstrapTable.prototype.init = function () {
        //Make sure that the filterControl option is set
        if (this.options.filterControl) {
            var that = this;

            // Compatibility: IE < 9 and old browsers
            if (!Object.keys) {
                objectKeys();
            }

            //Make sure that the internal variables are set correctly
            this.options.valuesFilterControl = [];

            this.$el.on('reset-view.bs.table', function () {
                //Create controls on $tableHeader if the height is set
                if (!that.options.height) {
                    return;
                }

                //Avoid recreate the controls
                if (that.$tableHeader.find('select').length > 0 || that.$tableHeader.find('input').length > 0) {
                    return;
                }

                createControls(that, that.$tableHeader);
            }).on('post-header.bs.table', function () {
                setValues(that);
            }).on('post-body.bs.table', function () {
                if (that.options.height) {
                    fixHeaderCSS(that);
                }
            }).on('column-switch.bs.table', function() {
                setValues(that);
            });
        }
        _init.apply(this, Array.prototype.slice.apply(arguments));
    };

    $.extend($.fn.bootstrapTable.locales, {
        formatClearFilters: function () {
            return 'Clear Filters';
        }
    });
    $.extend($.fn.bootstrapTable.defaults, $.fn.bootstrapTable.locales);

    BootstrapTable.prototype.initToolbar = function () {
        if ((!this.showToolbar) && (this.options.filterControl)) {
            this.showToolbar = this.options.filterControl;
        }

        _initToolbar.apply(this, Array.prototype.slice.apply(arguments));

        if (this.options.filterControl && this.options.filterShowClear) {
            var $btnGroup = this.$toolbar.find('>.btn-group'),
                $btnClear = $btnGroup.find('div.export');

            if (!$btnClear.length) {
              $btnClear = $([
                    '<button class="btn btn-default" ',
                    sprintf('type="button" title="%s">', this.options.formatClearFilters()),
                    sprintf('<i class="%s %s"></i> ', this.options.iconsPrefix, this.options.icons.clear),
                    '</button>',
                    '</ul>'].join('')).appendTo($btnGroup);

                $btnClear.off('click').on('click', $.proxy(this.clearFilterControl, this));
            }
        }
    };

    BootstrapTable.prototype.initHeader = function () {
        _initHeader.apply(this, Array.prototype.slice.apply(arguments));

        if (!this.options.filterControl) {
            return;
        }
        createControls(this, this.$header);
    };

    BootstrapTable.prototype.initBody = function () {
        _initBody.apply(this, Array.prototype.slice.apply(arguments));

        initFilterSelectControls(this);
    };

    BootstrapTable.prototype.initSearch = function () {
        _initSearch.apply(this, Array.prototype.slice.apply(arguments));

        if (!this.options.sidePagination === 'server') {
            return;
        }

        var that = this;
        var fp = $.isEmptyObject(this.filterColumnsPartial) ? null : this.filterColumnsPartial;

        //Check partial column filter
        this.data = fp ? $.grep(this.data, function (item, i) {
            for (var key in fp) {
                var thisColumn = that.columns[$.fn.bootstrapTable.utils.getFieldIndex(that.columns, key)];
                var fval = fp[key].toLowerCase();
                var value = item[key];
                
                // Fix #142: search use formated data
                if (thisColumn && thisColumn.searchFormatter) {
                    value = $.fn.bootstrapTable.utils.calculateObjectValue(that.header,
                    that.header.formatters[$.inArray(key, that.header.fields)],
                    [value, item, i], value);
                }

                if (thisColumn.filterStrictSearch) {
                    if (!($.inArray(key, that.header.fields) !== -1 &&
                        (typeof value === 'string' || typeof value === 'number') &&
                        value.toString().toLowerCase() === fval.toString().toLowerCase())) {
                        return false;
                    }
                }
                else {
                    if (!($.inArray(key, that.header.fields) !== -1 &&
                        (typeof value === 'string' || typeof value === 'number') &&
                        (value + '').toLowerCase().indexOf(fval) !== -1)) {
                        return false;
                    }
                }
            }
            return true;
        }) : this.data;
    };

    BootstrapTable.prototype.onColumnSearch = function (event) {
        copyValues(this);
        var text = $.trim($(event.currentTarget).val());
        var $field = $(event.currentTarget).closest('[data-field]').data('field');

        if ($.isEmptyObject(this.filterColumnsPartial)) {
            this.filterColumnsPartial = {};
        }
        if (text) {
            this.filterColumnsPartial[$field] = text;
        } else {
            delete this.filterColumnsPartial[$field];
        }

        this.options.pageNumber = 1;
        this.onSearch(event);
        this.updatePagination();
        this.trigger('column-search', $field, text);
    };

    BootstrapTable.prototype.clearFilterControl = function () {
        if (this.options.filterControl && this.options.filterShowClear) {
            var that = this,
                cookies = collectBootstrapCookies(),
                header = getCurrentHeader(that),
                table = header.closest('table'),
                controls = header.find(getCurrentSearchControls(that)),
                search = that.$toolbar.find('.search input'),
                timeoutId = 0;

            $.each(that.options.valuesFilterControl, function (i, item) {
                item.value = '';
            });

            setValues(that);

            // Clear each type of filter if it exists.
            // Requires the body to reload each time a type of filter is found because we never know
            // which ones are going to be present.
            if (controls.length > 0) {
                this.filterColumnsPartial = {};
                $(controls[0]).trigger(controls[0].tagName === 'INPUT' ? 'keyup' : 'change');
            }

            if (search.length > 0) {
                that.resetSearch();
            }

            // use the default sort order if it exists. do nothing if it does not
            if (that.options.sortName !== table.data('sortName') || that.options.sortOrder !== table.data('sortOrder')) {
                var sorter = sprintf(header.find('[data-field="%s"]', $(controls[0]).closest('table').data('sortName')));
                that.onSort(table.data('sortName'), table.data('sortName'));
                $(sorter).find('.sortable').trigger('click');
            }

            // clear cookies once the filters are clean
            clearTimeout(timeoutId);
            timeoutId = setTimeout(function () {
                if (cookies && cookies.length > 0) {
                    $.each(cookies, function (i, item) {
                        that.deleteCookie(item);
                    });
                }
            }, that.options.searchTimeOut);
        }
    };
}(jQuery);