/*jsl:import ipa.js */

/*  Authors:
 *    Adam Young <ayoung@redhat.com>
 *
 * Copyright (C) 2010 Red Hat
 * see file 'COPYING' for use and warranty information
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/* REQUIRES: ipa.js */
/* CURRENTLY ALSO REQUIRES search.js, because it reuses it's code to create
 * the AssociationList elements; IT NEEDS IT'S OWN CODE! */

IPA.associator = function (spec) {

    spec = spec || {};

    var that = {};

    that.entity = spec.entity;
    that.pkey = spec.pkey;

    that.other_entity = spec.other_entity;
    that.values = spec.values;

    that.method = spec.method;

    that.on_success = spec.on_success;
    that.on_error = spec.on_error;

    that.execute = function() {
    };

    return that;
};


/**
*This associator is built for the case where each association requires a separate rpc
*/
IPA.serial_associator = function(spec) {

    spec = spec || {};

    var that = IPA.associator(spec);

    that.execute = function() {

        if (!that.values || !that.values.length) {
            that.on_success();
            return;
        }

        var batch = IPA.batch_command({
            on_success: that.on_success,
            on_error: that.on_error
        });

        var args, options, command;

        for(var i=0; i < that.values.length; i++) {
            args = [that.values[i]];
            options = {};
            options[that.entity.name] = that.pkey;

            command = IPA.command({
                entity: that.other_entity,
                method: that.method,
                args: args,
                options: options
            });

            batch.add_command(command);
        }
        //alert(JSON.stringify(command.to_json()));

        batch.execute();
    };

    return that;
};

/**
*This associator is for the common case where all the asociations can be sent
in a single rpc
*/
IPA.bulk_associator = function(spec) {

    spec = spec || {};

    var that = IPA.associator(spec);

    that.execute = function() {

        if (!that.values || !that.values.length) {
            that.on_success();
            return;
        }

        var value = that.values.shift();
        if (!value) {
            that.on_success();
            return;
        }

        while (that.values.length > 0) {
            value += ',' + that.values.shift();
        }

        var args = [that.pkey];
        var options = { 'all': true };
        options[that.other_entity] = value;

        var command = IPA.command({
            entity: that.entity.name,
            method: that.method,
            args: args,
            options: options,
            on_success: that.on_success,
            on_error: that.on_error
        });

        //alert(JSON.stringify(command.to_json()));

        command.execute();
    };

    return that;
};

/**
 * This dialog is used for adding associations between two entities.
 */
IPA.association_adder_dialog = function(spec) {

    spec = spec || {};

    var that = IPA.adder_dialog(spec);

    that.entity = spec.entity;
    that.pkey = spec.pkey;
    that.other_entity = spec.other_entity;
    that.attribute_member = spec.attribute_member;
    that.exclude = spec.exclude || [];

    var init = function() {
        if (!that.get_columns().length) {
            var pkey_name = IPA.metadata.objects[spec.other_entity].primary_key;
            that.create_column({
                entity: that.entity,
                name: pkey_name,
                label: IPA.metadata.objects[spec.other_entity].label,
                primary_key: true,
                width: '600px'
            });
        }
    };

    that.search = function() {
        function on_success(data, text_status, xhr) {

            that.clear_available_values();

            var other_entity = IPA.get_entity(that.other_entity);
            var pkey_attr = other_entity.metadata.primary_key;

            var selected = that.get_selected_values();

            var results = data.result;
            var same_entity = that.entity.name === other_entity.name;
            for (var i=0; i<results.count; i++) {
                var result = results.result[i];
                var pkey = result[pkey_attr][0];

                if (same_entity && pkey === that.pkey) continue;
                if (that.exclude.indexOf(pkey) >= 0) continue;
                if (selected.indexOf(pkey) >= 0) continue;

                that.add_available_value(result);
            }
        }

        var options = { all: true };
        var relationships = IPA.metadata.objects[that.other_entity].relationships;

        /* TODO: better generic handling of different relationships! */
        var other_attribute_member = '';
        if (that.attribute_member == 'member')
            other_attribute_member = 'memberof';
        else if (that.attribute_member == 'memberuser')
            other_attribute_member = 'memberof';
        else if (that.attribute_member == 'memberhost')
            other_attribute_member = 'memberof';
        else if (that.attribute_member == 'memberof')
            other_attribute_member = 'member';

        var relationship = relationships[other_attribute_member];
        if (relationship) {
            var param_name = relationship[2] + that.entity.name;
            options[param_name] = that.pkey;
        }

        IPA.command({
            entity: that.other_entity,
            method: 'find',
            args: [that.get_filter()],
            options: options,
            on_success: on_success
        }).execute();
    };

    init();

    return that;
};


/**
 * This dialog is used for removing associations between two entities.
 */
IPA.association_deleter_dialog = function (spec) {

    spec = spec || {};

    var that = IPA.deleter_dialog(spec);

    that.entity = spec.entity;
    that.pkey = spec.pkey;
    that.other_entity = spec.other_entity;
    that.values = spec.values;

    that.associator = spec.associator;
    that.method = spec.method || 'remove_member';

    that.on_success = spec.on_success;
    that.on_error = spec.on_error;

    that.execute = function() {

        var associator = that.associator({
            entity: that.entity,
            pkey: that.pkey,
            other_entity: that.other_entity,
            values: that.values,
            method: that.method,
            on_success: that.on_success,
            on_error: that.on_error
        });

        associator.execute();
    };

    return that;
};


IPA.association_config = function (spec) {

    spec = spec || {};

    var that = {};

    that.name = spec.name;
    that.associator = spec.associator;
    that.add_method = spec.add_method;
    that.remove_method = spec.remove_method;

    return that;
};

IPA.association_table_widget = function (spec) {

    spec = spec || {};

    var index = spec.name.indexOf('_');
    spec.attribute_member = spec.attribute_member || spec.name.substring(0, index);
    spec.other_entity = spec.other_entity || spec.name.substring(index+1);

    spec.managed_entity_name = spec.other_entity;

    var that = IPA.table_widget(spec);

    that.other_entity = spec.other_entity;
    that.attribute_member = spec.attribute_member;

    that.associator = spec.associator || IPA.bulk_associator;
    that.add_method = spec.add_method || 'add_member';
    that.remove_method = spec.remove_method || 'remove_member';

    that.add_title = spec.add_title || IPA.messages.association.add.member;
    that.remove_title = spec.remove_title || IPA.messages.association.remove.member;

    that.adder_columns = $.ordered_map();

    that.get_adder_column = function(name) {
        return that.adder_columns.get(name);
    };

    that.add_adder_column = function(column) {
        that.adder_columns.put(column.name, column);
    };

    that.create_adder_column = function(spec) {
        spec.entity_name = that.other_entity;
        var column = IPA.column(spec);
        that.add_adder_column(column);
        return column;
    };

    that.create = function(container) {

        var column;

        // create a column if none defined
        if (!that.columns.length) {
            that.create_column({
                name: that.name,
                label: that.label,
                entity_name: that.other_entity,
                primary_key: true,
                link: true
            });
        }

        var columns = that.columns.values;
        for (var i=0; i<columns.length; i++) {
            column = columns[i];
            column.entity = IPA.get_entity(that.other_entity);

            if (column.link) {
                column.link_handler = function(value) {
                    IPA.nav.show_page(that.other_entity, 'default', value);
                    return false;
                };
            }
        }

        var adder_columns = that.adder_columns.values;
        for (var j=0; j<adder_columns.length; j++) {
            column = adder_columns[j];
            column.entity_name = that.other_entity;
        }

        that.table_create(container);

        that.remove_button = IPA.action_button({
            name: 'remove',
            label: IPA.messages.buttons.remove,
            icon: 'remove-icon',
            'class': 'action-button-disabled',
            click: function() {
                if (!that.remove_button.hasClass('action-button-disabled')) {
                    that.remove_handler();
                }
                return false;
            }
        }).appendTo(that.buttons);

        that.add_button = IPA.action_button({
            name: 'add',
            label: IPA.messages.buttons.add,
            icon: 'add-icon',
            click: function() {
                if (!that.add_button.hasClass('action-button-disabled')) {
                    that.add_handler();
                }
                return false;
            }
        }).appendTo(that.buttons);
    };

    that.add_handler = function() {
        var facet = that.entity.get_facet();

        if (facet.is_dirty()) {
            var dialog = IPA.dirty_dialog({
                entity:that.entity,
                facet: facet
            });

            dialog.callback = function() {
                that.show_add_dialog();
            };

            dialog.open(that.container);

        } else {
            that.show_add_dialog();
        }
    };

    that.remove_handler = function() {
        var facet = that.entity.get_facet();

        if (facet.is_dirty()) {
            var dialog = IPA.dirty_dialog({
                entity:that.entity,
                facet: facet
            });

            dialog.callback = function() {
                that.show_remove_dialog();
            };

            dialog.open(that.container);

        } else {
            that.show_remove_dialog();
        }
    };

    that.set_enabled = function(enabled) {
        that.table_set_enabled(enabled);
        if (enabled) {
            if(that.add_button) {
                that.add_button.removeClass('action-button-disabled');
            }
        } else {
            $('.action-button', that.table).addClass('action-button-disabled');
            that.unselect_all();
        }
    };

    that.select_changed = function() {

        var values = that.get_selected_values();

        if (that.remove_button) {
            if (values.length === 0) {
                that.remove_button.addClass('action-button-disabled');
            } else {
                that.remove_button.removeClass('action-button-disabled');
            }
        }
    };

    that.get_records = function(on_success, on_error) {

        var length = that.values.length;
        if (!length) return;

        if (length > 100) {
            length = 100;
        }

        var batch = IPA.batch_command({
            'name': that.entity.name+'_'+that.name,
            'on_success': on_success,
            'on_error': on_error
        });

        for (var i=0; i<length; i++) {
            var value = that.values[i];

            var command = IPA.command({
                entity: that.other_entity,
                method: 'show',
                args: [value],
                options: {
                    all: true,
                    rights: true
                }
            });

            batch.add_command(command);
        }

        batch.execute();
    };

    that.load = function(result) {
        that.values = result[that.name] || [];
        that.reset();
        that.unselect_all();
    };

    that.update = function() {

        that.empty();

        var columns = that.columns.values;
        if (columns.length == 1) { // show pkey only
            var name = columns[0].name;
            for (var i=0; i<that.values.length; i++) {
                var record = {};
                record[name] = that.values[i];
                that.add_record(record);
            }

        } else { // get and show additional fields
            that.get_records(
                function(data, text_status, xhr) {
                    var results = data.result.results;
                    for (var i=0; i<results.length; i++) {
                        var record = results[i].result;
                        that.add_record(record);
                    }
                }
            );
        }
    };

    that.create_add_dialog = function() {

        var entity_label = that.entity.metadata.label_singular;
        var pkey = IPA.nav.get_state(that.entity.name+'-pkey');
        var other_entity_label = IPA.metadata.objects[that.other_entity].label;

        var title = that.add_title;
        title = title.replace('${entity}', entity_label);
        title = title.replace('${primary_key}', pkey);
        title = title.replace('${other_entity}', other_entity_label);

        return IPA.association_adder_dialog({
            title: title,
            entity: that.entity,
            pkey: pkey,
            other_entity: that.other_entity,
            attribute_member: that.attribute_member,
            method: that.add_method,
            exclude: that.values
        });
    };

    that.show_add_dialog = function() {

        var dialog = that.create_add_dialog({entity:that.entity});

        var columns = that.adder_columns.values;
        if (columns.length) {
            dialog.set_columns(columns);
        }

        dialog.execute = function() {
            that.add(
                dialog.get_selected_values(),
                function() {
                    that.refresh();
                    dialog.close();
                },
                function() {
                    that.refresh();
                    dialog.close();
                }
            );
        };

        dialog.open(that.container);
    };

    that.add = function(values, on_success, on_error) {

        var pkey = IPA.nav.get_state(that.entity.name+'-pkey');

        var command = IPA.command({
            entity: that.entity.name,
            method: that.add_method,
            args: [pkey],
            on_success: on_success,
            on_error: on_error
        });
        command.set_option(that.other_entity, values.join(','));

        command.execute();
    };

    that.show_remove_dialog = function() {

        var selected_values = that.get_selected_values();

        if (!selected_values.length) {
            var message = IPA.messages.dialogs.remove_empty;
            alert(message);
            return;
        }

        var pkey = IPA.nav.get_state(that.entity.name+'-pkey');
        var label = IPA.metadata.objects[that.other_entity].label;

        var title = that.remove_title;
        title = title.replace('${entity}', that.entity.metadata.label_singular);
        title = title.replace('${primary_key}', pkey);
        title = title.replace('${other_entity}', label);

        var dialog = IPA.association_deleter_dialog({
            'title': title,
            'entity': that.entity,
            'pkey': pkey,
            'other_entity': that.other_entity,
            'values': selected_values,
            method: that.remove_method
        });

        dialog.execute = function() {
            that.remove(
                selected_values,
                function() {
                    that.refresh();
                    dialog.close();
                },
                function() {
                    that.refresh();
                    dialog.close();
                }
            );
        };


        dialog.open(that.container);
    };

    that.remove = function(values, on_success, on_error) {

        var pkey = IPA.nav.get_state(that.entity.name+'-pkey');

        var command = IPA.command({
            entity: that.entity.name,
            method: that.remove_method,
            args: [pkey],
            on_success: on_success,
            on_error: on_error
        });

        command.set_option(that.other_entity, values.join(','));

        command.execute();
    };

    that.refresh = function() {

        function on_success(data, text_status, xhr) {
            that.load(data.result.result);
        }

        function on_error(xhr, text_status, error_thrown) {
            var summary = $('span[name=summary]', that.tfoot).empty();
            summary.append(error_thrown.name+': '+error_thrown.message);
        }

        var pkey = IPA.nav.get_state(that.entity.name+'-pkey');
        IPA.command({
            entity: that.entity.name,
            method: 'show',
            args: [pkey],
            options: { all: true, rights: true },
            on_success: on_success,
            on_error: on_error
        }).execute();
    };

    /*initialization code*/
    /*this is duplicated in the facet... should be unified*/
    var i;
    if (spec.columns){
        for (i = 0; i < spec.columns.length; i+= 1){
            spec.columns[i].entity_name = spec.columns[i].entity_name ||
                that.other_entity;
            that.create_column(spec.columns[i]);
        }
    }
    if (spec.adder_columns){
        for (i = 0; i < spec.adder_columns.length; i+= 1){
            that.create_adder_column(spec.adder_columns[i]);
        }
    }

    // methods that should be invoked by subclasses
    that.association_table_widget_show_add_dialog = that.show_add_dialog;
    that.association_table_widget_show_remove_dialog = that.show_remove_dialog;

    return that;
};


IPA.association_facet = function (spec) {

    spec = spec || {};

    /*
       Link parameter is used to turn off the links in selfservice mode.
       Default it to true if not set so that facets that would not otherwise
       link by default get links set.

       link must be set before the call to the base class, to affect the  table.
     */
    spec.link = spec.link === undefined ? true : spec.link;
    spec.managed_entity_name = spec.other_entity;

    var that = IPA.table_facet(spec);

    that.entity = spec.entity;
    that.attribute_member = spec.attribute_member;
    that.indirect_attribute_member = spec.indirect_attribute_member;

    that.other_entity = spec.other_entity;

    that.association_type = 'direct';
    that.facet_group = spec.facet_group;

    that.read_only = spec.read_only;

    that.associator = spec.associator || IPA.bulk_associator;
    that.add_method = spec.add_method || 'add_member';
    that.remove_method = spec.remove_method || 'remove_member';

    that.add_title = spec.add_title || IPA.messages.association.add.member;
    that.remove_title = spec.remove_title || IPA.messages.association.remove.member;

    that.adder_columns = $.ordered_map();

    that.page_length = spec.page_length === undefined ? 20 : spec.page_length;

    that.get_adder_column = function(name) {
        return that.adder_columns.get(name);
    };

    that.add_adder_column = function(column) {
        column.entity_name = that.managed_entity_name;
        that.adder_columns.put(column.name, column);
    };

    /*TODO try to reuse the association_table_widget in association_facet*/
    that.create_adder_column = function(spec) {
        var column;
        var factory;
        if (spec instanceof Object) {
            factory = spec.factory || IPA.column;
        } else {
            factory  = IPA.column;
            spec = { name: spec };
        }
        spec.entity_name = that.other_entity;
        column = factory(spec);
        that.add_adder_column(column);
        return column;
    };

    function setup_columns(){
        var column;
        var i;

        var pkey_name;
        if (that.other_entity) {
            pkey_name = IPA.metadata.objects[that.other_entity].primary_key;
        }

        if (!that.columns.length){
            that.create_column({
                name: pkey_name,
                primary_key: true,
                link: spec.link
            });
        }

        if (!that.adder_columns.length) {
            that.create_adder_column({
                name: pkey_name,
                primary_key: true
            });
        }

        var label = IPA.metadata.objects[that.other_entity] ?
            IPA.metadata.objects[that.other_entity].label : that.other_entity;

        that.table = IPA.table_widget({
            id: that.entity.name+'-'+that.other_entity,
            'class': 'content-table',
            name: pkey_name,
            label: label,
            entity: that.entity,
            other_entity: that.other_entity,
            page_length: that.page_length,
            scrollable: true,
            selectable: !that.read_only
        });

        var columns = that.columns.values;

        that.table.set_columns(columns);

        for (i=0; i<columns.length; i++) {
            column = columns[i];
            column.entity_name = that.other_entity;

            if (column.link) {
                column.link_handler = function(value) {
                    IPA.nav.show_page(that.other_entity, 'default', value);
                    return false;
                };
            }
        }

        var adder_columns = that.adder_columns.values;
        for (i=0; i<adder_columns.length; i++) {
            column = adder_columns[i];
            column.entity_name = that.other_entity;
        }

        that.table.prev_page = function() {
            if (that.table.current_page > 1) {
                var state = {};
                state[that.entity_name+'-page'] = that.table.current_page - 1;
                IPA.nav.push_state(state);
            }
        };

        that.table.next_page = function() {
            if (that.table.current_page < that.table.total_pages) {
                var state = {};
                state[that.entity_name+'-page'] = that.table.current_page + 1;
                IPA.nav.push_state(state);
            }
        };

        that.table.set_page = function(page) {
            if (page < 1) {
                page = 1;
            } else if (page > that.total_pages) {
                page = that.total_pages;
            }
            var state = {};
            state[that.entity_name+'-page'] = page;
            IPA.nav.push_state(state);
        };

        that.table.refresh = function() {
            var state = {};
            var page = parseInt(IPA.nav.get_state(that.entity_name+'-page'), 10) || 1;
            if (page < 1) {
                state[that.entity_name+'-page'] = 1;
                IPA.nav.push_state(state);
                return;
            } else if (page > that.table.total_pages) {
                state[that.entity_name+'-page'] = that.table.total_pages;
                IPA.nav.push_state(state);
                return;
            }
            that.table.current_page = page;
            that.table.current_page_input.val(page);
            that.refresh_table();
        };

        that.table.select_changed = function() {

            var values = that.table.get_selected_values();

            if (that.remove_button) {
                if (values.length === 0) {
                    that.remove_button.addClass('action-button-disabled');
                } else {
                    that.remove_button.removeClass('action-button-disabled');
                }
            }
        };
    }

    that.create_header = function(container) {

        that.facet_create_header(container);

        that.pkey = IPA.nav.get_state(that.entity.name+'-pkey');

        if (!that.read_only) {
            that.remove_button = IPA.action_button({
                name: 'remove',
                label: IPA.messages.buttons.remove,
                icon: 'remove-icon',
                'class': 'action-button-disabled',
                click: function() {
                    if (!that.remove_button.hasClass('action-button-disabled')) {
                        that.show_remove_dialog();
                    }
                    return false;
                }
            }).appendTo(that.controls);

            that.add_button = IPA.action_button({
                name: 'add',
                label: IPA.messages.buttons.enroll,
                icon: 'add-icon',
                click: function() {
                    if (!that.add_button.hasClass('action-button-disabled')) {
                        that.show_add_dialog();
                    }
                    return false;
                }
            }).appendTo(that.controls);
        }

        if (that.indirect_attribute_member) {
            var span = $('<span/>', {
                'class': 'right-aligned-facet-controls'
            }).appendTo(that.controls);

            span.append(IPA.messages.association.show_results);
            span.append(' ');

            var direct_id = that.entity.name+'-'+that.attribute_member+'-'+that.other_entity+'-direct-radio';

            that.direct_radio = $('<input/>', {
                id: direct_id,
                type: 'radio',
                name: 'type',
                value: 'direct',
                click: function() {
                    that.association_type = $(this).val();
                    that.refresh();
                    return true;
                }
            }).appendTo(span);

            $('<label/>', {
                text: IPA.messages.association.direct_enrollment,
                'for': direct_id
            }).appendTo(span);

            span.append(' ');

            var indirect_id = that.entity.name+'-'+that.attribute_member+'-'+that.other_entity+'-indirect-radio';

            that.indirect_radio = $('<input/>', {
                id: indirect_id,
                type: 'radio',
                name: 'type',
                value: 'indirect',
                click: function() {
                    that.association_type = $(this).val();
                    that.refresh();
                    return true;
                }
            }).appendTo(span);

            $('<label/>', {
                text: IPA.messages.association.indirect_enrollment,
                'for': indirect_id
            }).appendTo(span);
        }
    };

    that.get_attribute_name = function() {
        if (that.association_type == 'direct') {
            return that.attribute_member+'_'+that.other_entity;
        } else {
            return that.indirect_attribute_member+'_'+that.other_entity;
        }
    };

    that.create_content = function(container) {
        that.table.create(container);
    };

    that.show = function() {
        that.facet_show();

        that.pkey = IPA.nav.get_state(that.entity.name+'-pkey');
        that.header.set_pkey(that.pkey);
    };

    that.show_add_dialog = function() {

        var pkey = IPA.nav.get_state(that.entity.name+'-pkey');
        var label = IPA.metadata.objects[that.other_entity] ? IPA.metadata.objects[that.other_entity].label : that.other_entity;

        var title = that.add_title;
        title = title.replace('${entity}', that.entity.metadata.label_singular);
        title = title.replace('${primary_key}', pkey);
        title = title.replace('${other_entity}', label);

        var pkeys = that.data[that.get_attribute_name()];

        var dialog = IPA.association_adder_dialog({
            title: title,
            entity: that.entity,
            pkey: pkey,
            other_entity: that.other_entity,
            attribute_member: that.attribute_member,
            exclude: pkeys
        });

        var adder_columns = that.adder_columns.values;
        if (adder_columns.length) {
            dialog.set_columns(adder_columns);
        }

        dialog.execute = function() {

            var pkey = IPA.nav.get_state(that.entity.name+'-pkey');

            var associator = that.associator({
                'entity': that.entity,
                'pkey': pkey,
                'other_entity': that.other_entity,
                'values': dialog.get_selected_values(),
                'method': that.add_method,
                'on_success': function() {
                    that.refresh();
                    dialog.close();
                },
                'on_error': function() {
                    that.refresh();
                    dialog.close();
                }
            });

            associator.execute();
        };

        dialog.open(that.container);
    };

    that.show_remove_dialog = function() {

        var label = IPA.metadata.objects[that.other_entity] ? IPA.metadata.objects[that.other_entity].label : that.other_entity;
        var values = that.table.get_selected_values();

        if (!values.length) {
            var message = IPA.messages.dialogs.remove_empty;
            alert(message);
            return;
        }

        var pkey = IPA.nav.get_state(that.entity.name+'-pkey');

        var title = that.remove_title;
        title = title.replace('${entity}', that.entity.metadata.label_singular);
        title = title.replace('${primary_key}', pkey);
        title = title.replace('${other_entity}', label);

        var dialog = IPA.association_deleter_dialog({
            title: title,
            entity: that.entity,
            pkey: pkey,
            other_entity: that.other_entity,
            values: values
        });

        dialog.execute = function() {

            var associator = that.associator({
                entity: that.entity,
                pkey: pkey,
                other_entity: that.other_entity,
                values: values,
                method: that.remove_method,
                on_success: function() {
                    that.refresh();
                    dialog.close();
                },
                on_error: function() {
                    that.refresh();
                    dialog.close();
                }
            });

            associator.execute();
        };

        dialog.open(that.container);
    };

    that.refresh_table = function() {

        that.table.current_page_input.val(that.table.current_page);
        that.table.total_pages_span.text(that.table.total_pages);

        var pkeys = that.data[that.get_attribute_name()];
        if (!pkeys || !pkeys.length) {
            that.table.empty();
            that.table.summary.text(IPA.messages.association.no_entries);
            return;
        }

        pkeys.sort();
        var total = pkeys.length;

        var start = (that.table.current_page - 1) * that.table.page_length + 1;
        var end = that.table.current_page * that.table.page_length;
        end = end > total ? total : end;

        var summary = IPA.messages.association.paging;
        summary = summary.replace('${start}', start);
        summary = summary.replace('${end}', end);
        summary = summary.replace('${total}', total);
        that.table.summary.text(summary);

        var list = pkeys.slice(start-1, end);

        var columns = that.table.columns.values;
        if (columns.length == 1) { // show pkey only
            var name = columns[0].name;
            that.table.empty();
            for (var i=0; i<list.length; i++) {
                var entry = {};
                entry[name] = list[i];
                that.table.add_record(entry);
            }

        } else { // get and show additional fields
            that.get_records(
                list,
                function(data, text_status, xhr) {
                    var results = data.result.results;
                    that.table.empty();
                    for (var i=0; i<results.length; i++) {
                        var record = results[i].result;
                        that.table.add_record(record);
                    }
                },
                function(xhr, text_status, error_thrown) {
                    that.table.empty();
                    var summary = that.table.summary.empty();
                    summary.append(error_thrown.name+': '+error_thrown.message);
                }
            );
        }
    };

    that.get_records = function(pkeys, on_success, on_error) {

        var length = pkeys.length;
        if (!length) return;

        var batch = IPA.batch_command({
            'name': that.entity.name+'_'+that.get_attribute_name(),
            'on_success': on_success,
            'on_error': on_error
        });

        for (var i=0; i<length; i++) {
            var pkey = pkeys[i];

            var command = IPA.command({
                entity: that.other_entity,
                method: 'show',
                args: [pkey],
                options: { all: true }
            });

            batch.add_command(command);
        }

        batch.execute();
    };

    that.load = function(data) {
        that.facet_load(data);

        var pkeys = that.data[that.get_attribute_name()];
        if (pkeys) {
            that.table.total_pages =
                Math.ceil(pkeys.length / that.table.page_length);
        } else {
            that.table.total_pages = 1;
        }

        that.table.current_page = 1;

        that.table.refresh();
        that.table.unselect_all();
    };

    that.refresh = function() {

        if (that.association_type == 'direct') {
            if (that.direct_radio) that.direct_radio.attr('checked', true);
            if (that.add_button) that.add_button.css('display', 'inline');
            if (that.remove_button) that.remove_button.css('display', 'inline');
        } else {
            if (that.indirect_radio) that.indirect_radio.attr('checked', true);
            if (that.add_button) that.add_button.css('display', 'none');
            if (that.remove_button) that.remove_button.css('display', 'none');
        }

        var pkey = that.entity.get_primary_key();

        var command = IPA.command({
            entity: that.entity.name,
            method: 'show',
            args: pkey
        });

        command.on_success = function(data, text_status, xhr) {
            that.load(data.result.result);
        };

        command.on_error = that.on_error;

        command.execute();
    };

    /*initialization*/
    var adder_columns = spec.adder_columns || [];
    for (var i=0; i<adder_columns.length; i++) {
        that.create_adder_column(adder_columns[i]);
    }
    setup_columns();
    return that;
};