The strategy I adopted was to use the ‘window.location.hash’ in order to detect which post to display. So when a browser tries to solve a post url it gets redirected to the index page with a special anchor that tell the main application which post has to be loaded first.

Here’s the part that handle this ‘anchor recognition’ in the main application:

onReady: function() {
  if (window.location.hash == ''){
    wipad.Main.init();
  }else{
    Ext.Ajax.request({
       // Here I call single.php simulating a single post navigation
        url: "<?php echo get_bloginfo('wpurl')?>" + window.location.hash.substring(1),
        success: function(response) {
          item_array = eval(response.responseText);
          wipad.Main.init((item_array[0]=="") ? null : item_array[0], item_array[1]);
        }
    });
  }
}

And here’s how I wrote single.php in order to handle both redirect and post rendering:

<?php
 // determine if we're answering an AJAX call or NO
 global $is_ajax; $is_ajax = isset($_SERVER['HTTP_X_REQUESTED_WITH']);

// if we're answering an Ajax call this means we need to render back the requested post
 if($is_ajax){
   the_post();
   $the_content = json_encode("<div class='x-htmlcontent the_content'>".apply_filters('the_content',get_the_content())."</div>");
   $the_title   = json_encode(get_the_title());
   echo "[".$the_title.", ".$the_content."]";
   exit(0);
 }

 // Otherwise redirect to the mail app with the anchor setted
 header('Location: '.str_replace(get_bloginfo('wpurl')."/", get_bloginfo('wpurl')."/#/", get_permalink()));
?>

Hope this may be useful to someone trying to figure out how to deal permalink related problems.

I’ve started deploying an iPad wordpress theme/plugin based on wptouch and powered by Sencha. Today I’ve reached the first working alpha and so I’ve decided to use it against this blog. You can try out this theme by surfing here with an iPad or a simulator; two screenshots are also available after the jump.

I’ve planned to release a first version of this plugin as soon as it include some basic features, such as permalink navigation and pages support.