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(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);
$.table_hotkeys.current_row = tr;
};
adjacent_row_callback = function(which) {
if (!adjacent_row(which) && typeof opts[which+'_page_link_cb'] === 'function' ) {
opts[which+'_page_link_cb']();
}
};
get_adjacent_row = function(which) {
var first_row, method;
if (!$.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.trigger( '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 ( typeof this[1] === 'function' ) {
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);
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