X-Git-Url: http://juplo.de/gitweb/?a=blobdiff_plain;f=jquery.openx.js;h=889a5395cc33ddabc0c7e289b4f766429ae207ac;hb=4d83599b3e9a91d7bdfb0ef3c84dbef31ba80f75;hp=549553879307b443de6536107f52e0ddf827cffb;hpb=c8dd729f1206ea3f69fdf1cfe70d25a397259058;p=openx

diff --git a/jquery.openx.js b/jquery.openx.js
index 5495538..889a539 100644
--- a/jquery.openx.js
+++ b/jquery.openx.js
@@ -29,8 +29,14 @@
 
   count = 0,
   slots = {},
+  min_width = {},
+  max_width = {},
+  width,
+  rendered = {},
+  visible = {},
+  rendering = false,
+  resize_timer,
   queue = [],
-  ads = [],
   output = [];
 
 
@@ -59,6 +65,13 @@
    *                        (only needed, when it is not the default-value 443).
    *
    *
+   * Seldom needed special Server-Settings (these parameters are only needed,
+   * if the default delivery-configration of the OpenX-Server was changed):
+   *
+   * path:          string  Path to delivery-scripts. DEFAULT: "/www/delivery".
+   * fl:            string  Flash-Include-Script. DEFAULT: "fl.js".
+   *
+   *
    * Delivery-Options (for details and explanations see the see:
    * http://www.openx.com/docs/2.8/userguide/single%20page%20call):
    *
@@ -79,11 +92,25 @@
    * charset:       string  Charset used, when delivering the banner-codes.
    *                        If empty, the charset is guessed by OpenX. Examples
    *                        for sensible values: "UTF-8", "ISO-8859-1".
+   *
+   *
+   * Other settings:
+   *
+   * selector:      string  A selector for selecting the DOM-elements, that
+   *                        should display ad-banners. DEFAULT: ".oa".
+   *                        See: http://api.jquery.com/category/selectors/
+   * min_prefix:    string  Prefix for the encoding of the minmal width as
+   *                        CSS-classname. DEFAULT: "min_".
+   * max_prefix:    string  Prefix for the encoding of the maximal width as
+   *                        CSS-classname. DEFAULT: "max_".
+   * resize_delay:  number  Number of milliseconds to wait, before a
+   *                        recalculation of the visible ads is scheduled.
+   *                        If the value is choosen to small, a recalculation
+   *                        might be scheduled, while resizing is still in
+   *                        progress. DEFAULT: 200.
    */
   $.openx = function( options ) {
 
-    var name, src, errors = [], i;
-
     if (domain) {
       if (console.error) {
         console.error('jQuery.openx was already initialized!');
@@ -98,12 +125,9 @@
 
     _options = options;
 
-    if (!options.server)
-      errors.push('Required option "server" is missing!');
-    if (errors.length > 0) {
+    if (!options.server) {
       if (console.error) {
-        for (i=0; i<errors.length; i++)
-          console.error('Required option "server" is missing!');
+        console.error('Required option "server" is missing!');
         console.log('options: ', options);
       }
       return;
@@ -112,7 +136,12 @@
     settings = $.extend(
       {
         'protocol': document.location.protocol,
-        'cache': true
+        'delivery': '/www/delivery',
+        'fl': 'fl.js',
+        'selector': '.oa',
+        'min_prefix': 'min_',
+        'max_prefix': 'max_',
+        'resize_delay': 200
       },
       options
       );
@@ -132,9 +161,6 @@
      */
     $.ajaxSetup({ 'cache': true });
 
-
-    src = domain + '/www/delivery/spc.php';
-
     /**
      * jQuery.openx only works with "named zones", because it does not know,
      * which zones belong to which website. For mor informations about
@@ -147,20 +173,81 @@
      * template - and does not have to worry about performance penalties due
      * to unnecessarily fetched banners.
      */
-    src += '?zones=';
     for(name in OA_zones) {
-      $('.oa').each(function() {
+      $(settings.selector).each(function() {
         var
-        node = $(this),
-        id;
-        if (node.hasClass(name)) {
+        id,
+        classes,
+        i,
+        min = new RegExp('^' + settings.min_prefix + '([0-9]+)$'),
+        max = new RegExp('^' + settings.max_prefix + '([0-9]+)$'),
+        match;
+        if (this.id === name) {
           id = 'oa_' + ++count;
-          slots[id] = node;
-          queue.push(id);
-          src += escape(id + '=' + OA_zones[name] + "|");
+          slots[id] = this;
+          min_width[id] = 0;
+          max_width[id] = Number.MAX_VALUE;
+          classes = this.className.split(/\s+/);
+          for (i=0; i<classes.length; i++) {
+            match = min.exec(classes[i]);
+            if (match)
+              min_width[id] = match[1];
+            match = max.exec(classes[i]);
+            if (match)
+              max_width[id] = match[1];
+          }
+          rendered[id] = false;
+          visible[id] = false;
         }
       });
     }
+
+    /** Add resize-event */
+    $(window).resize(function() {
+      clearTimeout(resize_timer);
+      resize_timer = setTimeout(recalculate_visible , settings.resize_timeout);
+    });
+
+    /** Fetch the JavaScript for Flash and schedule the initial fetch */
+    $.getScript(domain + settings.delivery + '/' + settings.fl, recalculate_visible);
+
+  }
+
+  function recalculate_visible() {
+
+    width = $(document).width();
+    if (!rendering)
+      fetch_ads();
+    
+  }
+
+  function fetch_ads() {
+
+    /** Guide rendering-process for early restarts */
+    rendering = true;
+
+    var name, src = domain + settings.delivery + '/spc.php';
+
+    /** Order banners for all zones that were found on the page */
+    src += '?zones=';
+    for(id in slots) {
+      visible[id] = width >= min_width[id] && width <= max_width[id];
+      if (visible[id]) {
+        if (!rendered[id]) {
+          queue.push(id);
+          src += escape(id + '=' + OA_zones[slots[id].id] + "|");
+          rendered[id] = true;
+        }
+        else {
+          /** Unhide already fetched visible banners */
+          $(slots[id]).slideDown();
+        }
+      }
+      else {
+        /** Hide unvisible banners */
+        $(slots[id]).hide();
+      }
+    }
     src += '&nz=1'; // << We want to fetch named zones!
 
     /**
@@ -177,7 +264,7 @@
     if (settings.blockcampaign === 1)
       src += '&blockcampaign=1';
     if (settings.target)
-      src += '&target' + settings.target;
+      src += '&target=' + settings.target;
     if (settings.withtext === 1)
       src += '&withtext=1';
     if (settings.charset)
@@ -187,25 +274,23 @@
     if (typeof OA_source !== 'undefined')
       src += "&source=" + escape(OA_source);
 
-    /** Chain-load the scripts (next script to load is fl.js */
-    $.getScript(src, load_flash);
+    /** Signal, that this task is done / in progress */
+    width = undefined;
 
-  }
-
-  function load_flash() {
-
-    $.getScript(domain + '/www/delivery/fl.js', init_ads);
+    /** Fetch data from OpenX and schedule the render-preparation */
+    $.getScript(src, init_ads);
 
   }
 
   function init_ads() {
 
-    var i, id;
+    var i, id, ads = [];
     for (i=0; i<queue.length; i++) {
       id = queue[i];
       if (typeof(OA_output[id]) != 'undefined' && OA_output[id] != '')
         ads.push(id);
     }
+    queue = ads;
 
     document.write = document_write;
     document.writeln = document_write;
@@ -216,12 +301,12 @@
 
   function render_ads() {
 
-    while (ads.length > 0) {
+    while (queue.length > 0) {
 
       var result, src, inline;
 
-      id = ads.shift();
-      node = slots[id];
+      id = queue.shift();
+      node = $(slots[id]);
 
       node.slideDown();
 
@@ -264,7 +349,7 @@
             /** script-tag with src-URL! */
             if (OA_output[id].length > 0)
               /** The banner-code was not rendered completely yet! */
-              ads.unshift(id);
+              queue.unshift(id);
             /** Load the script and halt all work until the script is loaded and executed... */
             $.getScript(result[1], render_ads); // << jQuery.getScript() generates onload-Handler for _all_ browsers ;)
             return;
@@ -280,6 +365,12 @@
 
     id = undefined;
     node = undefined;
+    rendering = false;
+
+    /** Restart rendering, if new task was queued */
+    if (width)
+      fetch_ads();
+
   }
 
   /** This function is used to overwrite document.write and document.writeln */
@@ -291,7 +382,7 @@
     for (var i=0; i<arguments.length; i++)
       output.push(arguments[i]);
 
-    if (id != ads[0])
+    if (id != queue[0])
       /**
        * Re-Add the last banner-code to the working-queue, because included
        * scripts had added markup via document.write(), which is not
@@ -299,7 +390,7 @@
        * Otherwise the added markup would be falsely rendered together with
        * the markup from the following banner-code.
        */
-      ads.unshift(id);
+      queue.unshift(id);
 
   }