liveui

contrib/static/nntpchan.js

@@ -4,8 +4,7 @@
 
 
 // insert a backlink for a post given its short hash
-function nntpchan_backlink(shorthash)
-{
+function nntpchan_backlink(shorthash) {
   var elem = document.getElementById("postform_message");
   if ( elem )
   {
@@ -13,18 +12,6 @@ function nntpchan_backlink(shorthash)
   }
 }
 
-var banner_count = 3;
-
-// inject a banner into an element
-function nntpchan_inject_banners(elem, prefix) {
-  var n = Math.floor(Math.random() * banner_count);
-  var banner = prefix + "static/banner_"+n+".jpg";
-  var e = document.createElement("img");
-  e.src = banner;
-  e.id = "nntpchan_banner";
-  elem.appendChild(e);
-}
-
 function get_storage() {
   var st = null;
   if (window.localStorage) {
@@ -47,8 +34,180 @@ function enable_theme(prefix, name) {
   }
 }
 
-function main() {
-  // do other initialization here
+
+// call an api method
+// handler(json_object) on success
+// handler(null) on fail
+function nntpchan_apicall(url, handler, err_handler) {
+  var ajax = new XMLHttpRequest();
+  ajax.onreadystatechange = function() {
+    if (ajax.readyState == XMLHttpRequest.DONE ) {
+      var status = ajax.status;
+      var j = null;
+      if (status == 200) {
+        // found
+        try {
+          j = JSON.parse(ajax.responseText);
+        } catch (e) {} // ignore parse error
+      } else if (status == 410) {
+        if (err_handler) {err_handler("cannot fetch post: api disabled");}
+        return;
+      }
+      handler(j);
+    }
+  };
+  ajax.open("GET", url);
+  ajax.send();
+}
+
+// build post from json
+// inject into parent
+// if j is null then inject "not found" post
+function nntpchan_buildpost(parent, j) {
+  var post = document.createElement("div");
+  if (j) {
+    // huehuehue
+    post.innerHTML = j.PostMarkup;
+  } else {
+    post.setAttribute("class", "notfound post");
+    post.appendChild(document.createTextNode("post not found"));
+  }
+  parent.appendChild(post);
+}
+
+// inject post hover behavior
+function inject_hover(prefix, el, parent) {
+  if (!prefix) { throw "prefix is not defined"; }
+  console.log(el, parent);
+  var timeout;
+  var idx = -2;
+
+  var linkhash = el.backlinkhash;
+  
+  var elem = document.createElement("span");
+  elem.setAttribute("class", "backlink_rewritten");
+  elem.appendChild(document.createTextNode(">>"+linkhash.substr(0,10)));
+
+  parent.appendChild(elem);
+  parent.removeChild(el);
+  
+  elem.onclick = function(ev) {
+    if(elem.backlink) {
+      nntpchan_apicall(prefix+"api/find?hash="+linkhash, function(j) {
+        var wrapper = document.createElement("div");
+        wrapper.setAttribute("class", "hover "+linkhash);
+        if (j == null) {
+          // not found?
+          wrapper.appendChild(document.createTextNode("not found"));
+        } else {
+          // wrap backlink
+          nntpchan_buildpost(wrapper, j);
+        }
+        elem.appendChild(wrapper);
+        elem.backlink = false;
+      }, function(msg) {
+        var wrapper = document.createElement("div");
+        wrapper.setAttribute("class", "hover "+linkhash);
+        wrapper.appendChild(document.createTextNode(msg));
+        elem.appendChild(wrapper);
+        elem.backlink = false;
+      });
+    } else {
+      var elems = document.getElementsByClassName(linkhash);
+      if (!elems) throw "bad state, no backlinks open?";
+      for (var idx = 0 ; idx < elems.length; idx ++ ) {
+        elems[idx].parentNode.removeChild(elems[idx]);
+      }
+      elem.backlink = true;
+    }
+  };
+  elem.backlink = true;
+}
+
+function livechan_got_post(widget, j) {
+  // do scroll
+  while (widget.children.length > 20) {
+    // remove top element
+    widget.children.removeChild(widget.children[0]);
+  }
+  nntpchan_buildpost(widget, j);
+  // scroll to bottom
+  widget.scrollTop = widget.scrollHeight;
+}
+
+// inject post form into an element
+function inject_postform(prefix, parent) {
+  
+}
+
+// inject livechan widget into parent
+function inject_livechan_widget(prefix, parent) {
+  if ( "WebSocket" in window ) {
+    var url = "ws://"+document.location.host+prefix+"live";
+    if ( document.location.protocol == "https:" ) {
+      url = "wss://"+document.location.host+prefix+"live";
+    }
+    var socket = new WebSocket(url);
+    var progress = function(str) {
+      parent.innerHTML = "<pre>livechan: "+str+"</pre>";
+    };
+    progress("initialize");
+    socket.onopen = function () {
+      progress("connected");
+    }
+    socket.onmessage = function(ev) {
+      var j = null;
+      try {
+        j = JSON.parse(ev.data);
+      } catch(e) {
+        // ignore
+      }
+      if (j) {
+        console.log(j);
+        livechan_got_post(parent, j);
+      }
+    }
+    socket.onclose = function(ev) {
+      progress("connection closed");
+      setTimeout(function(){ parent.innerHTML = ""; }, 5000);
+    }
+  } else {
+    parent.innerHTML = "<pre>livechan mode requires websocket support</pre>";
+    setTimeout(function() {
+      parent.innerHTML = "";
+    }, 5000);
+  }
+}
+
+function ukko_livechan(prefix) {
+  var ukko = document.getElementById("ukko_threads");
+  if (ukko) {
+    // remove children
+    ukko.innerHTML = "";
+    inject_livechan_widget(prefix, ukko);
+  }
+}
+
+var banner_count = 3;
+
+// inject a banner into an element
+function nntpchan_inject_banners(elem, prefix) {
+  var n = Math.floor(Math.random() * banner_count);
+  var banner = prefix + "static/banner_"+n+".jpg";
+  var e = document.createElement("img");
+  e.src = banner;
+  e.id = "nntpchan_banner";
+  elem.appendChild(e);
+}
+
+function init(prefix) {
+  // inject posthover ...
+  var elems = document.getElementsByClassName("backlink");
+  // ... for backlinks
+  for ( var idx = 0 ; idx < elems.length ; idx ++ ) {
+    // uncomment to do reply hover
+    //inject_hover(prefix, elems[idx], elems[idx].parentNode);
+  }
 }
   
 // apply themes

contrib/static/site.css

@@ -394,7 +394,11 @@ input, textarea {
 
 }
 
-.backlink, .backlink:hover, .backlink:visited, .backlink:visited:hover {
+.backlink_rewritten {
+    z-index: 5;
+}
+
+.backlink, .backlink:hover, .backlink:visited, .backlink:visited:hover, .backlink_rewritten {
     margin-left: none;
     color: #D00
 }

contrib/templates/default/board.mustache

@@ -20,7 +20,7 @@
     <script type="text/javascript" src="{{board.Prefix}}static/nntpchan.js"></script>
     <title>{{board.Board}}</title>
   </head>
-  <body onload="main()">
+  <body>
     <!-- begin navbar -->
     {{{board.Navbar}}}
     <!-- end navbar -->
@@ -55,10 +55,10 @@
     <a href="{{board.Prefix}}catalog-{{board.Name}}.html"> {{#i18n.Translations}}{{catalog_label}}{{/i18n.Translations}} </a>
     </div>
     <script type="text/javascript">
-
+      var prefix = "{{board.Prefix}}";
       var e = document.getElementById("nntpchan_banner");
-      nntpchan_inject_banners(e, "{{board.Prefix}}");
-
+      nntpchan_inject_banners(e, prefix);
+      init(prefix);
     </script>
     <hr/>
     <footer>

contrib/templates/default/thread.mustache

@@ -19,7 +19,7 @@
     <script src="{{thread.Prefix}}static/nntpchan.js" type="text/javascript"></script>
     <title> {{thread.OP.Subject}} </title>
   </head>
-  <body onload="main()">
+  <body>
     <!-- begin navbar -->
     {{{thread.Navbar}}}
     <!-- end navbar -->
@@ -45,9 +45,10 @@
     <hr/>
     <div class="navLinks">[<a href="{{thread.BoardURL}}" accesskey="a">{{#i18n.Translations}}{{return}}{{/i18n.Translations}}</a>] [<a href="{{thread.Prefix}}catalog-{{thread.Board}}.html" accesskey="r">{{#i18n.Translations}}{{catalog_label}}{{/i18n.Translations}}</a>] [<a href="#thread_{{thread.OP.PostHash}}">{{#i18n.Translations}}{{to_top_label}}{{/i18n.Translations}}</a>] [<a href="#navlinks" accesskey="r" onclick="location.reload();">{{#i18n.Translations}}{{update}}{{/i18n.Translations}}</a>]</div>
       <script type="text/javascript">
+          var prefix = "{{thread.Prefix}}";
           var e = document.getElementById("nntpchan_banner");
-          nntpchan_inject_banners(e, "{{thread.Prefix}}");
-
+          nntpchan_inject_banners(e, prefix);
+          init(prefix);
       </script>
     <hr/>
     <footer>

contrib/templates/default/ukko.mustache

@@ -12,7 +12,7 @@
     <link id="current_theme" rel="stylesheet" href="{{prefix}}static/user.css" />
     <script type="text/javascript" src="{{prefix}}static/nntpchan.js"></script>
   </head>
-  <body onload="main()">
+  <body>
     <center>
       <div id="nntpchan_banner">
       </div>
@@ -22,6 +22,7 @@
     <!-- end navbar -->
     <div class="board_header"> {{#i18n.Translations}}{{overboard_title}}{{/i18n.Translations}} </div>
       <div id="ukko_threads">
+        <pre><a href="#" onclick="ukko_livechan('{{prefix}}')">livechan</a></pre>
       {{#threads}}
         <div class="thread" id="thread_{{OP.PostHash}}">
 	        <div class="ukko_thread_header">
@@ -36,9 +37,10 @@
       {{/threads}}
       </div>
       <script type="text/javascript" >
+          var prefix = "{{prefix}}";
           var e = document.getElementById("nntpchan_banner");
-          nntpchan_inject_banners(e, "{{prefix}}");
-
+          nntpchan_inject_banners(e, prefix);
+          init(prefix);
       </script>
     <hr/>
     <footer>