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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);