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add focus page number set around current page number

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Campbell Allen 2014-08-27 11:35:02 +01:00
parent 3ac996ba60
commit 66045f5a25
1 changed files with 25 additions and 4 deletions
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29
addons/pager/jquery.tablesorter.pager.js
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@ -190,13 +190,34 @@
// as large page set links will slow the browser on large dom inserts // as large page set links will slow the browser on large dom inserts
var max_option_size = 20, var max_option_size = 20,
skip_set_size = Math.floor(pg / max_option_size), skip_set_size = Math.floor(pg / max_option_size),
large_collection = pg > max_option_size; large_collection = pg > max_option_size,
for ( i = 1; i <= pg; ) { current_page = p.page + 1,
t += '<option>' + i + '</option>'; start_page = 1,
end_page = pg,
option_pages = [];
//construct default options pages array
var option_pages_start_page = (large_collection && current_page == 1) ? skip_set_size : 1
for (i = option_pages_start_page; i <= pg;) {
option_pages.push(i);
(large_collection) ? i = i+skip_set_size : i++; (large_collection) ? i = i+skip_set_size : i++;
}
if (large_collection) {
var central_focus_size = Math.floor(max_option_size / 2) - 1,
lower_focus_window = Math.abs(Math.floor(current_page - central_focus_size/2)),
focus_option_pages = [];
start_page = Math.min(current_page, lower_focus_window);
end_page = start_page + central_focus_size;
//construct an array to get a focus set around the current page
for (i = start_page; i <= end_page ; i++) focus_option_pages.push(i);
var insert_index = Math.floor(option_pages.length / 2) - Math.floor(focus_option_pages.length / 2);
Array.prototype.splice.apply(option_pages, [ insert_index, focus_option_pages.length ].concat(focus_option_pages));
option_pages.sort(function sortNumber(a,b) { return a - b; });
}
for ( i = 0; i < option_pages.length; i++) {
t += '<option>' + option_pages[i] + '</option>';
} }
p.$goto[0].innerHTML = t; p.$goto[0].innerHTML = t;
p.$goto[0].value = p.page + 1; p.$goto[0].value = current_page;
} }
// rebind startRow/page inputs // rebind startRow/page inputs
$out.find('.ts-startRow, .ts-page').unbind('change').bind('change', function(){ $out.find('.ts-startRow, .ts-page').unbind('change').bind('change', function(){