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POjQuery Tree (pioz): Tree doesnt render correctly with cookies
 

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  1. POjQuery Tree (pioz): Tree doesnt render correctly with cookies
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    <p>I am using the jQuery tree from here <a href="https://github.com/pioz/jquery-tree#readme" rel="nofollow">https://github.com/pioz/jquery-tree#readme</a></p> <p>The problem is rendering of the tree when I do a cookie save. When it comes time to re-render it, the code doesnt work correctly if I dont follow a specific way of putting the ordered lists. </p> <p>I guess best is to take a look at this demo code I put up.</p> <p><a href="http://jsbin.com/emaku4/23" rel="nofollow">http://jsbin.com/emaku4/23</a></p> <ol> <li>The entire tree is open</li> <li>Click on Level 3 arrow to expand (for both trees)</li> <li>Do a refresh</li> </ol> <p>Now, the first tree renders correctly again with cookies showing what was open previously but the 2nd tree doesnt. I think it's because on the 2nd one, I put the one without sublevels on top of the one with sublevels (the one called THIS IS THE DIFFERENCE).</p> <p>Is there a way to adjust the code in so it can render view correctly using cookies no matter what order I have in any of the sublevels?</p> <pre><code>// Require jQuery // Use jQuery.cookie if you want to restore the previous expansion of the tree jQuery.fn.tree = function(options) { // Setup default options /** Avaiable options are: * - open_char: defeault character to display on open node in tree * - close_char: defeault character to display on close node in tree * - default_expanded_paths_string: if no cookie found the tree will be expand with this paths string **/ if(options === undefined || options === null) options = {}; var open_char = options.open_char; var close_char = options.close_char; var default_expanded_paths_string = options.default_expanded_paths_string; if(open_char === undefined || open_char === null) open_char = '&amp;#9660;'; if(close_char === undefined || close_char === null) close_char = '&amp;#9658;'; if(default_expanded_paths_string === undefined || default_expanded_paths_string === null) default_expanded_paths_string = '0'; // Get the expanded paths from the current state of tree jQuery.fn.save_paths = function() { var paths = []; var path = []; var open_nodes = jQuery(this).find('li span.open'); var last_depth = null; for(var i = 0; i &lt; open_nodes.length; i++) { var depth = jQuery(open_nodes[i]).parents('ul').length-1; if((last_depth == null &amp;&amp; depth &gt; 0) || (depth &gt; last_depth &amp;&amp; depth-last_depth &gt; 1)) continue; var pos = jQuery(open_nodes[i]).parent().prevAll().length; if(last_depth == null) { path = [pos]; } else if(depth &lt; last_depth) { paths.push(path.join('/')); var diff = last_depth - depth; path.splice(path.length-diff-1, diff+1); path.push(pos); } else if(depth == last_depth) { paths.push(path.join('/')); path.splice(path.length-1, 1); path.push(pos); } else if(depth &gt; last_depth) { path.push(pos); } last_depth = depth; } paths.push(path.join('/')); try { jQuery.cookie(this.attr('class'), paths.join(',')); } catch(e) {} }; // This function expand the tree with 'path' jQuery.fn.restore_paths = function() { var paths_string = null; try { paths_string = jQuery.cookie(this.attr('class')); } catch(e) { paths_string = default_expanded_paths_string; } if(paths_string === null || paths_string === undefined) paths_string = default_expanded_paths_string; var paths = paths_string.split(','); for(var i = 0; i &lt; paths.length; i++) { var obj = jQuery(this); var path = paths[i].split('/'); for(var j = 0; j &lt; path.length; j++) { obj = jQuery(obj.children('li').children('ul')[path[j]]); obj.show(); obj.parent().children('span').attr('class', 'open'); obj.parent().children('span').html(open_char); } } }; for(var i = 0; i &lt; this.length; i++) { if(this[i].tagName === 'UL') { // Make a tree jQuery(this[i]).find('li').has('ul').prepend('&lt;span class="close" style="cursor:pointer;"&gt;' + close_char + '&lt;/span&gt;'); jQuery(this[i]).find('ul').hide(); // Restore cookie expand path jQuery(this[i]).restore_paths(); // Click event jQuery(this[i]).find('span').live('click', {tree : this[i]}, function(e) { if (jQuery(this).attr('class') == 'open') { jQuery(this).parent().children('ul').hide('slow'); jQuery(this).attr('class', 'close'); jQuery(this).html(close_char); } else if (jQuery(this).attr('class') == 'close') { jQuery(this).parent().children('ul').show('slow'); jQuery(this).attr('class', 'open'); jQuery(this).html(open_char); } jQuery(e.data.tree).save_paths(); }); } } } </code></pre>
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    1. USScott Yu - Front-End UX
    1. USScott Yu - Front-End UX
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    1. PO
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      1. POjQuery Tree (pioz): Tree doesnt render correctly with cookies
      1. USScott Yu - Front-End UX
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      1. POjQuery Tree (pioz): Tree doesnt render correctly with cookies
      1. USScott Yu - Front-End UX
      1. VTFavorite
    1. COInstead of checking for a class by comparing the whole "class" attribute, you should probably use ".hasClass()". Otherwise, if you ever need to add *another* class to those elements, things won't work at all.
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      1. POjQuery Tree (pioz): Tree doesnt render correctly with cookies
      1. USPointy
    2. COAlso, that jsbin page works fine, as far as I can tell. What's the broken part?
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      1. POjQuery Tree (pioz): Tree doesnt render correctly with cookies
      1. USPointy
 

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