(function(jsGrid, $, undefined) {

    var Field = jsGrid.Field;

    function CheckboxField(config) {
        Field.call(this, config);
    }

    CheckboxField.prototype = new Field({

        sorter: "number",
        align: "center",
        autosearch: true,

        itemTemplate: function(value) {
            return this._createCheckbox().prop({
                checked: value,
                disabled: true
            });
        },

        filterTemplate: function() {
            if(!this.filtering)
                return "";

            var grid = this._grid,
                $result = this.filterControl = this._createCheckbox();

            $result.prop({
                readOnly: true,
                indeterminate: true
            });

            $result.on("click", function() {
                var $cb = $(this);

                if($cb.prop("readOnly")) {
                    $cb.prop({
                        checked: false,
                        readOnly: false
                    });
                }
                else if(!$cb.prop("checked")) {
                    $cb.prop({
                        readOnly: true,
                        indeterminate: true
                    });
                }
            });

            if(this.autosearch) {
                $result.on("click", function() {
                    grid.search();
                });
            }

            return $result;
        },

        insertTemplate: function() {
            if(!this.inserting)
                return "";

            return this.insertControl = this._createCheckbox();
        },

        editTemplate: function(value) {
            if(!this.editing)
                return this.itemTemplate.apply(this, arguments);

            var $result = this.editControl = this._createCheckbox();
            $result.prop("checked", value);
            return $result;
        },

        filterValue: function() {
            return this.filterControl.get(0).indeterminate
                ? undefined
                : this.filterControl.is(":checked");
        },

        insertValue: function() {
            return this.insertControl.is(":checked");
        },

        editValue: function() {
            return this.editControl.is(":checked");
        },

        _createCheckbox: function() {
            return $("<input>").attr("type", "checkbox");
        }
    });

    jsGrid.fields.checkbox = jsGrid.CheckboxField = CheckboxField;

}(jsGrid, jQuery));