1 (function($){

     2 	$.fn.filter_visible = function(depth) {

     3 		depth = depth || 3;

     4 		var is_visible = function() {

     5 			var p = $(this), i;

     6 			for(i=0; i<depth-1; ++i) {

     7 				if (!p.is(':visible')) return false;

     8 				p = p.parent();

     9 			}

    10 			return true;

    11 		}

    12 		return this.filter(is_visible);

    13 	};

    14 	$.table_hotkeys = function(table, keys, opts) {

    15 		opts = $.extend($.table_hotkeys.defaults, opts);

    16 		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;

    17 		

    18 		selected_class = opts.class_prefix + opts.selected_suffix;

    19 		destructive_class = opts.class_prefix + opts.destructive_suffix

    20 		set_current_row = function (tr) {

    21 			if ($.table_hotkeys.current_row) $.table_hotkeys.current_row.removeClass(selected_class);

    22 			tr.addClass(selected_class);

    23 			tr[0].scrollIntoView(false);

    24 			$.table_hotkeys.current_row = tr;

    25 		};

    26 		adjacent_row_callback = function(which) {

    27 			if (!adjacent_row(which) && $.isFunction(opts[which+'_page_link_cb'])) {

    28 				opts[which+'_page_link_cb']();

    29 			}

    30 		};

    31 		get_adjacent_row = function(which) {

    32 			var first_row, method;

    33 			

    34 			if (!$.table_hotkeys.current_row) {

    35 				first_row = get_first_row();

    36 				$.table_hotkeys.current_row = first_row;

    37 				return first_row[0];

    38 			}

    39 			method = 'prev' == which? $.fn.prevAll : $.fn.nextAll;

    40 			return method.call($.table_hotkeys.current_row, opts.cycle_expr).filter_visible()[0];

    41 		};

    42 		adjacent_row = function(which) {

    43 			var adj = get_adjacent_row(which);

    44 			if (!adj) return false;

    45 			set_current_row($(adj));

    46 			return true;

    47 		};

    48 		prev_row = function() { return adjacent_row('prev'); };

    49 		next_row = function() { return adjacent_row('next'); };

    50 		check = function() {

    51 			$(opts.checkbox_expr, $.table_hotkeys.current_row).each(function() {

    52 				this.checked = !this.checked;

    53 			});

    54 		};

    55 		get_first_row = function() {

    56 			return $(opts.cycle_expr, table).filter_visible().eq(opts.start_row_index);

    57 		};

    58 		get_last_row = function() {

    59 			var rows = $(opts.cycle_expr, table).filter_visible();

    60 			return rows.eq(rows.length-1);

    61 		};

    62 		make_key_callback = function(expr) {

    63 			return function() {

    64 				if ( null == $.table_hotkeys.current_row ) return false;

    65 				var clickable = $(expr, $.table_hotkeys.current_row);

    66 				if (!clickable.length) return false;

    67 				if (clickable.is('.'+destructive_class)) next_row() || prev_row();

    68 				clickable.click();

    69 			}

    70 		};

    71 		first_row = get_first_row();

    72 		if (!first_row.length) return;

    73 		if (opts.highlight_first)

    74 			set_current_row(first_row);

    75 		else if (opts.highlight_last)

    76 			set_current_row(get_last_row());

    77 		$.hotkeys.add(opts.prev_key, opts.hotkeys_opts, function() {return adjacent_row_callback('prev')});

    78 		$.hotkeys.add(opts.next_key, opts.hotkeys_opts, function() {return adjacent_row_callback('next')});

    79 		$.hotkeys.add(opts.mark_key, opts.hotkeys_opts, check);

    80 		$.each(keys, function() {

    81 			var callback, key;

    82 			

    83 			if ($.isFunction(this[1])) {

    84 				callback = this[1];

    85 				key = this[0];

    86 				$.hotkeys.add(key, opts.hotkeys_opts, function(event) { return callback(event, $.table_hotkeys.current_row); });

    87 			} else {

    88 				key = this;

    89 				$.hotkeys.add(key, opts.hotkeys_opts, make_key_callback('.'+opts.class_prefix+key));

    90 			}

    91 		});

    92 

    93 	};

    94 	$.table_hotkeys.current_row = null;

    95 	$.table_hotkeys.defaults = {cycle_expr: 'tr', class_prefix: 'vim-', selected_suffix: 'current',

    96 		destructive_suffix: 'destructive', hotkeys_opts: {disableInInput: true, type: 'keypress'},

    97 		checkbox_expr: ':checkbox', next_key: 'j', prev_key: 'k', mark_key: 'x',

    98 		start_row_index: 2, highlight_first: false, highlight_last: false, next_page_link_cb: false, prev_page_link_cb: false};

    99 })(jQuery);