X-Git-Url: http://juplo.de/gitweb/?a=blobdiff_plain;f=jquery.openx.js;h=5029248deace1695ce6aff2db2e03865293417ef;hb=1a5c6ae43875f7a234fae919f9fd85b9574c3d8c;hp=352d0acf6a5c3f1ef9f71d3ffd6e3031321cab62;hpb=b2876e052926a1045ac059023e51919c3f29b196;p=openx

diff --git a/jquery.openx.js b/jquery.openx.js
index 352d0ac..5029248 100644
--- a/jquery.openx.js
+++ b/jquery.openx.js
@@ -29,8 +29,15 @@
 
   count = 0,
   slots = {},
+  min_width = {},
+  max_width = {},
+  is_pagewidth = {},
+  pagewidth,
+  rendered = {},
+  visible = {},
+  rendering = false,
+  resize_timer,
   queue = [],
-  ads = [],
   output = [];
 
 
@@ -93,11 +100,21 @@
    * 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-class. DEFAULT: "min_".
+   * max_prefix:    string  Prefix for the encoding of the maximal width as
+   *                        CSS-class. DEFAULT: "max_".
+   * pw_marker:     string  CSS-class, that marks the encoded maximal and minmal
+   *                        width as page width. DEFAULT: "pw".
+   * 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.
+   * debug:         boolean Turn on/off console-debugging. DEFAULT: false.
    */
   $.openx = function( options ) {
 
-    var name, src, errors = [], i;
-
     if (domain) {
       if (console.error) {
         console.error('jQuery.openx was already initialized!');
@@ -112,12 +129,9 @@
 
     _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;
@@ -129,7 +143,11 @@
         'delivery': '/www/delivery',
         'fl': 'fl.js',
         'selector': '.oa',
-        'cache': true
+        'min_prefix': 'min_',
+        'max_prefix': 'max_',
+        'pw_marker': 'pw',
+        'resize_delay': 200,
+        'debug': false
       },
       options
       );
@@ -141,6 +159,9 @@
     if (settings.protocol === 'https:' && settings.https_port)
       domain += ':' + settings.https_port;
 
+    if (settings.debug && console.debug)
+      console.debug('Ad-Server: ' + domain);
+
     /**
      * Without this option, jQuery appends an timestamp to every URL, that
      * is fetched via $.getScript(). This can mess up badly written
@@ -149,9 +170,6 @@
      */
     $.ajaxSetup({ 'cache': true });
 
-
-    src = domain + settings.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
@@ -164,20 +182,105 @@
      * template - and does not have to worry about performance penalties due
      * to unnecessarily fetched banners.
      */
-    src += '?zones=';
     for(name in OA_zones) {
       $(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;
+          is_pagewidth[id] = false;
+          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];
+            is_pagewidth[id] = classes[i] === settings.pw_marker;
+          }
+          rendered[id] = false;
+          visible[id] = false;
+          if (settings.debug && console.debug)
+            console.debug(
+                'Slot ' + count + ': ' + this.id
+                + (is_pagewidth[id] ? ', pagewidth: ' : ', width: ')
+                + min_width[id]
+                + (max_width[id] != Number.MAX_VALUE ? '-' + max_width[id] : '')
+                );
         }
       });
     }
+
+    /** 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() {
+
+    pagewidth = $(document).width();
+    if (settings.debug && console.debug)
+      console.debug('Scheduling recalculation of visible banners for width ' + pagewidth);
+    if (!rendering)
+      fetch_ads();
+    
+  }
+
+  function fetch_ads() {
+
+    /** Guide rendering-process for early restarts */
+    rendering = true;
+
+    if (settings.debug && console.debug)
+      console.debug('Starting recalculation of visible banners for width ' + pagewidth);
+
+    var name, width, src = domain + settings.delivery + '/spc.php';
+
+    /** Order banners for all zones that were found on the page */
+    src += '?zones=';
+    for(id in slots) {
+      width =
+          is_pagewidth[id]
+          ? pagewidth
+          : Math.round($(slots[id]).parent().width());
+      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;
+          if (settings.debug && console.debug)
+            console.debug('Fetching banner ' + slots[id].id);
+        }
+        else {
+          /** Unhide already fetched visible banners */
+          if (settings.debug && console.debug)
+            console.debug('Unhiding already fetched banner ' + slots[id].id);
+          $(slots[id]).slideDown();
+        }
+      }
+      else {
+        /** Hide unvisible banners */
+        if (settings.debug && console.debug)
+          console.debug('Hiding banner ' + slots[id].id);
+        $(slots[id]).hide();
+      }
+    }
     src += '&nz=1'; // << We want to fetch named zones!
 
     /**
@@ -204,25 +307,23 @@
     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);
-
-  }
-
-  function load_flash() {
+    /** Signal, that this task is done / in progress */
+    pagewidth = undefined;
 
-    $.getScript(domain + settings.delivery + '/' + settings.fl, 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;
@@ -233,12 +334,15 @@
 
   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]);
+
+      if (settings.debug && console.debug)
+        console.debug('Rendering banner ' + slots[id].id);
 
       node.slideDown();
 
@@ -281,7 +385,7 @@
             /** 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;
@@ -297,6 +401,15 @@
 
     id = undefined;
     node = undefined;
+    rendering = false;
+
+    if (settings.debug && console.debug)
+      console.debug('Recalculation of visible banners done!');
+
+    /** Restart rendering, if new task was queued */
+    if (pagewidth)
+      fetch_ads();
+
   }
 
   /** This function is used to overwrite document.write and document.writeln */
@@ -308,7 +421,7 @@
     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
@@ -316,7 +429,7 @@
        * Otherwise the added markup would be falsely rendered together with
        * the markup from the following banner-code.
        */
-      ads.unshift(id);
+      queue.unshift(id);
 
   }