source: trunk/www.guidonia.net/wp/wp-includes/js/jquery/jquery.table-hotkeys.dev.js@ 44

(function($){
        $.fn.filter_visible = function(depth) {
                depth = depth || 3;
                var is_visible = function() {
                        var p = $(this), i;
                        for(i=0; i<depth-1; ++i) {
                                if (!p.is(':visible')) return false;
                                p = p.parent();
                        }
                        return true;
                }
                return this.filter(is_visible);
        };
        $.table_hotkeys = function(table, keys, opts) {
                opts = $.extend($.table_hotkeys.defaults, opts);
                var selected_class, destructive_class, set_current_row, adjacent_row_callback, get_adjacent_row, adjacent_row, prev_row, next_row, check, get_first_row, get_last_row, make_key_callback, first_row;
                
                selected_class = opts.class_prefix + opts.selected_suffix;
                destructive_class = opts.class_prefix + opts.destructive_suffix
                set_current_row = function (tr) {
                        if ($.table_hotkeys.current_row) $.table_hotkeys.current_row.removeClass(selected_class);
                        tr.addClass(selected_class);
                        tr[0].scrollIntoView(false);
                        $.table_hotkeys.current_row = tr;
                };
                adjacent_row_callback = function(which) {
                        if (!adjacent_row(which) && $.isFunction(opts[which+'_page_link_cb'])) {
                                opts[which+'_page_link_cb']();
                        }
                };
                get_adjacent_row = function(which) {
                        var first_row, method;
                        
                        if (!$.table_hotkeys.current_row) {
                                first_row = get_first_row();
                                $.table_hotkeys.current_row = first_row;
                                return first_row[0];
                        }
                        method = 'prev' == which? $.fn.prevAll : $.fn.nextAll;
                        return method.call($.table_hotkeys.current_row, opts.cycle_expr).filter_visible()[0];
                };
                adjacent_row = function(which) {
                        var adj = get_adjacent_row(which);
                        if (!adj) return false;
                        set_current_row($(adj));
                        return true;
                };
                prev_row = function() { return adjacent_row('prev'); };
                next_row = function() { return adjacent_row('next'); };
                check = function() {
                        $(opts.checkbox_expr, $.table_hotkeys.current_row).each(function() {
                                this.checked = !this.checked;
                        });
                };
                get_first_row = function() {
                        return $(opts.cycle_expr, table).filter_visible().eq(opts.start_row_index);
                };
                get_last_row = function() {
                        var rows = $(opts.cycle_expr, table).filter_visible();
                        return rows.eq(rows.length-1);
                };
                make_key_callback = function(expr) {
                        return function() {
                                if ( null == $.table_hotkeys.current_row ) return false;
                                var clickable = $(expr, $.table_hotkeys.current_row);
                                if (!clickable.length) return false;
                                if (clickable.is('.'+destructive_class)) next_row() || prev_row();
                                clickable.click();
                        }
                };
                first_row = get_first_row();
                if (!first_row.length) return;
                if (opts.highlight_first)
                        set_current_row(first_row);
                else if (opts.highlight_last)
                        set_current_row(get_last_row());
                $.hotkeys.add(opts.prev_key, opts.hotkeys_opts, function() {return adjacent_row_callback('prev')});
                $.hotkeys.add(opts.next_key, opts.hotkeys_opts, function() {return adjacent_row_callback('next')});
                $.hotkeys.add(opts.mark_key, opts.hotkeys_opts, check);
                $.each(keys, function() {
                        var callback, key;
                        
                        if ($.isFunction(this[1])) {
                                callback = this[1];
                                key = this[0];
                                $.hotkeys.add(key, opts.hotkeys_opts, function(event) { return callback(event, $.table_hotkeys.current_row); });
                        } else {
                                key = this;
                                $.hotkeys.add(key, opts.hotkeys_opts, make_key_callback('.'+opts.class_prefix+key));
                        }
                });

        };
        $.table_hotkeys.current_row = null;
        $.table_hotkeys.defaults = {cycle_expr: 'tr', class_prefix: 'vim-', selected_suffix: 'current',
                destructive_suffix: 'destructive', hotkeys_opts: {disableInInput: true, type: 'keypress'},
                checkbox_expr: ':checkbox', next_key: 'j', prev_key: 'k', mark_key: 'x',
                start_row_index: 2, highlight_first: false, highlight_last: false, next_page_link_cb: false, prev_page_link_cb: false};
})(jQuery);