From 5b04ddd6bc9e0af5f73694371cd3988b1d5be7e8 Mon Sep 17 00:00:00 2001
From: thomascube <thomas@roundcube.net>
Date: Fri, 04 May 2012 06:06:37 -0400
Subject: [PATCH] Fix multi-threaded autocompletion when number of threads > number of sources

---
 program/js/app.js |  665 ++++++++++++++++++++++++++++++-------------------------
 1 files changed, 364 insertions(+), 301 deletions(-)

diff --git a/program/js/app.js b/program/js/app.js
index 120e545..487d718 100644
--- a/program/js/app.js
+++ b/program/js/app.js
@@ -54,9 +54,10 @@
 
   // set jQuery ajax options
   $.ajaxSetup({
-    cache:false,
-    error:function(request, status, err){ ref.http_error(request, status, err); },
-    beforeSend:function(xmlhttp){ xmlhttp.setRequestHeader('X-Roundcube-Request', ref.env.request_token); }
+    cache: false,
+    timeout: this.env.request_timeout * 1000,
+    error: function(request, status, err){ ref.http_error(request, status, err); },
+    beforeSend: function(xmlhttp){ xmlhttp.setRequestHeader('X-Roundcube-Request', ref.env.request_token); }
   });
 
   // set environment variable(s)
@@ -224,15 +225,14 @@
 
         this.env.message_commands = ['show', 'reply', 'reply-all', 'reply-list', 'forward',
           'moveto', 'copy', 'delete', 'open', 'mark', 'edit', 'viewsource', 'download',
-          'print', 'load-attachment', 'load-headers', 'forward-attachment'];
+          'print', 'load-attachment', 'show-headers', 'hide-headers', 'forward-attachment'];
 
         if (this.env.action == 'show' || this.env.action == 'preview') {
           this.enable_command(this.env.message_commands, this.env.uid);
           this.enable_command('reply-list', this.env.list_post);
 
           if (this.env.action == 'show') {
-            this.http_request('pagenav', '_uid='+this.env.uid+'&_mbox='+urlencode(this.env.mailbox)
-              + (this.env.search_request ? '&_search='+this.env.search_request : ''),
+            this.http_request('pagenav', {_uid: this.env.uid, _mbox: this.env.mailbox, _search: this.env.search_request},
               this.display_message('', 'loading'));
           }
 
@@ -273,7 +273,7 @@
         // show printing dialog
         else if (this.env.action == 'print' && this.env.uid)
           if (bw.safari)
-            window.setTimeout('window.print()', 10);
+            setTimeout('window.print()', 10);
           else
             window.print();
 
@@ -281,7 +281,7 @@
         if (this.gui_objects.mailboxlist) {
           this.env.unread_counts = {};
           this.gui_objects.folderlist = this.gui_objects.mailboxlist;
-          this.http_request('getunread', '');
+          this.http_request('getunread');
         }
 
         // init address book widget
@@ -300,11 +300,13 @@
 
         // ask user to send MDN
         if (this.env.mdn_request && this.env.uid) {
-          var mdnurl = '_uid='+this.env.uid+'&_mbox='+urlencode(this.env.mailbox);
-          if (confirm(this.get_label('mdnrequest')))
-            this.http_post('sendmdn', mdnurl);
-          else
-            this.http_post('mark', mdnurl+'&_flag=mdnsent');
+          var postact = 'sendmdn',
+            postdata = {_uid: this.env.uid, _mbox: this.env.mailbox};
+          if (!confirm(this.get_label('mdnrequest'))) {
+            postdata._flag = 'mdnsent';
+            postact = 'mark';
+          }
+          this.http_post(postact, postdata);
         }
 
         break;
@@ -569,17 +571,14 @@
         break;
 
       case 'list':
-        this.reset_qsearch();
+        if (props && props != '')
+          this.reset_qsearch();
         if (this.task == 'mail') {
           this.list_mailbox(props);
           this.set_button_titles();
         }
         else if (this.task == 'addressbook')
           this.list_contacts(props);
-        break;
-
-      case 'load-headers':
-        this.load_headers(obj);
         break;
 
       case 'sort':
@@ -769,7 +768,7 @@
       case 'always-load':
         if (this.env.uid && this.env.sender) {
           this.add_contact(urlencode(this.env.sender));
-          window.setTimeout(function(){ ref.command('load-images'); }, 300);
+          setTimeout(function(){ ref.command('load-images'); }, 300);
           break;
         }
 
@@ -787,7 +786,7 @@
             qstring += '&_safe=1';
           this.attachment_win = window.open(this.env.comm_path+'&_action=get&'+qstring+'&_frame=1', 'rcubemailattachment');
           if (this.attachment_win) {
-            window.setTimeout(function(){ ref.attachment_win.focus(); }, 10);
+            setTimeout(function(){ ref.attachment_win.focus(); }, 10);
             break;
           }
         }
@@ -857,6 +856,9 @@
           url += '&_mbox='+urlencode(this.env.mailbox);
           if (props)
              url += '&_to='+urlencode(props);
+          // also send search request so we can go back to search result after message is sent
+          if (this.env.search_request)
+            url += '&_search='+this.env.search_request;
         }
         // modify url if we're in addressbook
         else if (this.task == 'addressbook') {
@@ -907,19 +909,25 @@
         break;
 
       case 'savedraft':
+        var form = this.gui_objects.messageform, msgid;
+
         // Reset the auto-save timer
-        self.clearTimeout(this.save_timer);
+        clearTimeout(this.save_timer);
 
-        if (!this.gui_objects.messageform)
+        // saving Drafts is disabled
+        if (!form)
           break;
 
-        // if saving Drafts is disabled in main.inc.php
-        // or if compose form did not change
-        if (!this.env.drafts_mailbox || this.cmp_hash == this.compose_field_hash())
+        // compose form did not change
+        if (this.cmp_hash == this.compose_field_hash()) {
+          this.auto_save_start();
           break;
+        }
 
-        var form = this.gui_objects.messageform,
-          msgid = this.set_busy(true, 'savingmessage');
+        // re-set keep-alive timeout
+        this.start_keepalive();
+
+        msgid = this.set_busy(true, 'savingmessage');
 
         form.target = "savetarget";
         form._draft.value = '1';
@@ -935,7 +943,7 @@
           break;
 
         // Reset the auto-save timer
-        self.clearTimeout(this.save_timer);
+        clearTimeout(this.save_timer);
 
         // all checks passed, send message
         var lang = this.spellcheck_lang(),
@@ -948,13 +956,11 @@
         form.action = this.add_url(form.action, '_lang', lang);
         form.submit();
 
-        // clear timeout (sending could take longer)
-        clearTimeout(this.request_timer);
         break;
 
       case 'send-attachment':
         // Reset the auto-save timer
-        self.clearTimeout(this.save_timer);
+        clearTimeout(this.save_timer);
 
         this.upload_file(props || this.gui_objects.uploadform);
         break;
@@ -1001,7 +1007,7 @@
         if (uid = this.get_single_uid()) {
           ref.printwin = window.open(this.env.comm_path+'&_action=print&_uid='+uid+'&_mbox='+urlencode(this.env.mailbox)+(this.env.safemode ? '&_safe=1' : ''));
           if (this.printwin) {
-            window.setTimeout(function(){ ref.printwin.focus(); }, 20);
+            setTimeout(function(){ ref.printwin.focus(); }, 20);
             if (this.env.action != 'show')
               this.mark_message('read', uid);
           }
@@ -1012,7 +1018,7 @@
         if (uid = this.get_single_uid()) {
           ref.sourcewin = window.open(this.env.comm_path+'&_action=viewsource&_uid='+uid+'&_mbox='+urlencode(this.env.mailbox));
           if (this.sourcewin)
-            window.setTimeout(function(){ ref.sourcewin.focus(); }, 20);
+            setTimeout(function(){ ref.sourcewin.focus(); }, 20);
           }
         break;
 
@@ -1098,7 +1104,7 @@
       default:
         var func = command.replace(/-/g, '_');
         if (this[func] && typeof this[func] === 'function') {
-          ret = this[func](props);
+          ret = this[func](props, obj);
         }
         break;
     }
@@ -1151,14 +1157,6 @@
     if (this.gui_objects.editform)
       this.lock_form(this.gui_objects.editform, a);
 
-    // clear pending timer
-    if (this.request_timer)
-      clearTimeout(this.request_timer);
-
-    // set timer for requests
-    if (a && this.env.request_timeout)
-      this.request_timer = window.setTimeout(function(){ ref.request_timed_out(); }, this.env.request_timeout * 1000);
-
     return id;
   };
 
@@ -1197,19 +1195,12 @@
     return url.replace(/_task=[a-z]+/, '_task='+task);
   };
 
-  // called when a request timed out
-  this.request_timed_out = function()
-  {
-    this.set_busy(false);
-    this.display_message('Request timed out!', 'error');
-  };
-
   this.reload = function(delay)
   {
     if (this.is_framed())
       parent.rcmail.reload(delay);
     else if (delay)
-      window.setTimeout(function(){ rcmail.reload(); }, delay);
+      setTimeout(function(){ rcmail.reload(); }, delay);
     else if (window.location)
       location.href = this.env.comm_path + (this.env.action ? '&_action='+this.env.action : '');
   };
@@ -1231,8 +1222,8 @@
 
       return url.replace(/(\?.*)$/, urldata);
     }
-    else
-      return url + '?' + name + '=' + value;
+
+    return url + '?' + name + '=' + value;
   };
 
   this.is_framed = function()
@@ -1342,7 +1333,7 @@
     this.env.last_folder_target = null;
 
     if (this.folder_auto_timer) {
-      window.clearTimeout(this.folder_auto_timer);
+      clearTimeout(this.folder_auto_timer);
       this.folder_auto_timer = null;
       this.folder_auto_expand = null;
     }
@@ -1395,15 +1386,15 @@
             // if the folder is collapsed, expand it after 1sec and restart the drag & drop process.
             if (div.hasClass('collapsed')) {
               if (this.folder_auto_timer)
-                window.clearTimeout(this.folder_auto_timer);
+                clearTimeout(this.folder_auto_timer);
 
               this.folder_auto_expand = this.env.mailboxes[k].id;
-              this.folder_auto_timer = window.setTimeout(function() {
+              this.folder_auto_timer = setTimeout(function() {
                 rcmail.command('collapse-folder', rcmail.folder_auto_expand);
                 rcmail.drag_start(null);
               }, 1000);
             } else if (this.folder_auto_timer) {
-              window.clearTimeout(this.folder_auto_timer);
+              clearTimeout(this.folder_auto_timer);
               this.folder_auto_timer = null;
               this.folder_auto_expand = null;
             }
@@ -1555,7 +1546,7 @@
 
     // start timer for message preview (wait for double click)
     if (selected && this.env.contentframe && !list.multi_selecting && !this.dummy_select)
-      this.preview_timer = window.setTimeout(function(){ ref.msglist_get_preview(); }, 200);
+      this.preview_timer = setTimeout(function(){ ref.msglist_get_preview(); }, 200);
     else if (this.env.contentframe)
       this.show_contentframe(false);
   };
@@ -1572,7 +1563,7 @@
           clearTimeout(this.preview_timer);
         if (this.preview_read_timer)
           clearTimeout(this.preview_read_timer);
-        this.preview_timer = window.setTimeout(function(){ ref.msglist_get_preview(); }, 200);
+        this.preview_timer = setTimeout(function(){ ref.msglist_get_preview(); }, 200);
       }
     }
   };
@@ -1846,8 +1837,11 @@
       else if (c == 'threads')
         html = expando;
       else if (c == 'subject') {
-        if (bw.ie)
+        if (bw.ie) {
           col.onmouseover = function() { rcube_webmail.long_subject_title_ie(this, message.depth+1); };
+          if (bw.ie8)
+            tree = '<span></span>' + tree; // #1487821
+        }
         html = tree + cols[c];
       }
       else if (c == 'priority') {
@@ -1887,7 +1881,7 @@
 
   this.set_list_options = function(cols, sort_col, sort_order, threads)
   {
-    var update, add_url = '';
+    var update, post_data = {};
 
     if (sort_col === undefined)
       sort_col = this.env.sort_col;
@@ -1901,7 +1895,7 @@
 
     if (this.env.threading != threads) {
       update = 1;
-      add_url += '&_threads=' + threads;
+      post_data._threads = threads;
     }
 
     if (cols && cols.length) {
@@ -1921,12 +1915,12 @@
 
       if (newcols.join() != oldcols.join()) {
         update = 1;
-        add_url += '&_cols=' + newcols.join(',');
+        post_data._cols = newcols.join(',');
       }
     }
 
     if (update)
-      this.list_mailbox('', '', sort_col+'_'+sort_order, add_url);
+      this.list_mailbox('', '', sort_col+'_'+sort_order, post_data);
   };
 
   // when user doble-clicks on a row
@@ -1958,7 +1952,7 @@
 
       // mark as read and change mbox unread counter
       if (action == 'preview' && this.message_list && this.message_list.rows[id] && this.message_list.rows[id].unread && this.env.preview_pane_mark_read >= 0) {
-        this.preview_read_timer = window.setTimeout(function() {
+        this.preview_read_timer = setTimeout(function() {
           ref.set_message(id, 'unread', false);
           ref.update_thread_root(id, 'read');
           if (ref.env.unread_counts[ref.env.mailbox]) {
@@ -1966,7 +1960,7 @@
             ref.set_unread_count(ref.env.mailbox, ref.env.unread_counts[ref.env.mailbox], ref.env.mailbox == 'INBOX');
           }
           if (ref.env.preview_pane_mark_read > 0)
-            ref.http_post('mark', '_uid='+id+'&_flag=read&_quiet=1');
+            ref.http_post('mark', {_uid: id, _flag: 'read', _quiet: 1});
         }, this.env.preview_pane_mark_read * 1000);
       }
     }
@@ -2029,23 +2023,23 @@
   };
 
   // list messages of a specific mailbox
-  this.list_mailbox = function(mbox, page, sort, add_url)
+  this.list_mailbox = function(mbox, page, sort, url)
   {
-    var url = '', target = window;
+    var target = window;
+
+    if (typeof url != 'object')
+      url = {};
 
     if (!mbox)
       mbox = this.env.mailbox ? this.env.mailbox : 'INBOX';
 
-    if (add_url)
-      url += add_url;
-
     // add sort to url if set
     if (sort)
-      url += '&_sort=' + sort;
+      url._sort = sort;
 
     // also send search request to get the right messages
     if (this.env.search_request)
-      url += '&_search='+this.env.search_request;
+      url._search = this.env.search_request;
 
     // set page=1 if changeing to another mailbox
     if (this.env.mailbox != mbox) {
@@ -2058,7 +2052,7 @@
     this.clear_message_list();
 
     if (mbox != this.env.mailbox || (mbox == this.env.mailbox && !page && !sort))
-      url += '&_refresh=1';
+      url._refresh = 1;
 
     this.select_folder(mbox, '', true);
     this.unmark_folder(mbox, 'recent', '', true);
@@ -2072,13 +2066,16 @@
 
     if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
       target = window.frames[this.env.contentframe];
-      url += '&_framed=1';
+      url._framed = 1;
     }
 
     // load message list to target frame/window
     if (mbox) {
       this.set_busy(true, 'loading');
-      this.location_href(this.env.comm_path+'&_mbox='+urlencode(mbox)+(page ? '&_page='+page : '')+url, target);
+      url._mbox = mbox;
+      if (page)
+        url._page = page;
+      this.location_href(url, target);
     }
   };
 
@@ -2093,15 +2090,20 @@
   };
 
   // send remote request to load message list
-  this.list_mailbox_remote = function(mbox, page, add_url)
+  this.list_mailbox_remote = function(mbox, page, post_data)
   {
     // clear message list first
     this.message_list.clear();
 
-    // send request to server
-    var url = '_mbox='+urlencode(mbox)+(page ? '&_page='+page : ''),
-      lock = this.set_busy(true, 'loading');
-    this.http_request('list', url+add_url, lock);
+    var lock = this.set_busy(true, 'loading');
+
+    if (typeof post_data != 'object')
+      post_data = {};
+    post_data._mbox = mbox;
+    if (page)
+      post_data._page = page;
+
+    this.http_request('list', post_data, lock);
   };
 
   // removes messages that doesn't exists from list selection array
@@ -2126,8 +2128,8 @@
 
     while (new_row) {
       if (new_row.nodeType == 1 && (r = this.message_list.rows[new_row.uid]) && r.unread_children) {
-	    this.message_list.expand_all(r);
-	    this.set_unread_children(r.uid);
+        this.message_list.expand_all(r);
+        this.set_unread_children(r.uid);
       }
       new_row = new_row.nextSibling;
     }
@@ -2312,38 +2314,38 @@
     row = row.obj.nextSibling;
     while (row) {
       if (row.nodeType == 1 && (r = rows[row.uid])) {
-	    if (!r.depth || r.depth <= depth)
-	      break;
+        if (!r.depth || r.depth <= depth)
+          break;
 
-	    r.depth--; // move left
+        r.depth--; // move left
         // reset width and clear the content of a tab, icons will be added later
-	    $('#rcmtab'+r.uid).width(r.depth * 15).html('');
+        $('#rcmtab'+r.uid).width(r.depth * 15).html('');
         if (!r.depth) { // a new root
-	      count++; // increase roots count
-	      r.parent_uid = 0;
-	      if (r.has_children) {
-	        // replace 'leaf' with 'collapsed'
-	        $('#rcmrow'+r.uid+' '+'.leaf:first')
+          count++; // increase roots count
+          r.parent_uid = 0;
+          if (r.has_children) {
+            // replace 'leaf' with 'collapsed'
+            $('#rcmrow'+r.uid+' '+'.leaf:first')
               .attr('id', 'rcmexpando' + r.uid)
-	          .attr('class', (r.obj.style.display != 'none' ? 'expanded' : 'collapsed'))
-    	      .bind('mousedown', {uid:r.uid, p:this},
-	            function(e) { return e.data.p.expand_message_row(e, e.data.uid); });
+              .attr('class', (r.obj.style.display != 'none' ? 'expanded' : 'collapsed'))
+              .bind('mousedown', {uid:r.uid, p:this},
+                function(e) { return e.data.p.expand_message_row(e, e.data.uid); });
 
-	        r.unread_children = 0;
-	        roots.push(r);
-	      }
-	      // show if it was hidden
-	      if (r.obj.style.display == 'none')
-	        $(r.obj).show();
-	    }
-	    else {
-	      if (r.depth == depth)
-	        r.parent_uid = parent;
-	      if (r.unread && roots.length)
-	        roots[roots.length-1].unread_children++;
-	    }
-	  }
-	  row = row.nextSibling;
+            r.unread_children = 0;
+            roots.push(r);
+          }
+          // show if it was hidden
+          if (r.obj.style.display == 'none')
+            $(r.obj).show();
+        }
+        else {
+          if (r.depth == depth)
+            r.parent_uid = parent;
+          if (r.unread && roots.length)
+            roots[roots.length-1].unread_children++;
+        }
+      }
+      row = row.nextSibling;
     }
 
     // update unread_children for roots
@@ -2362,13 +2364,13 @@
 
     while (row) {
       if (row.nodeType == 1 && (r = rows[row.uid])) {
-	    if (!r.depth && cnt)
-	      cnt--;
+        if (!r.depth && cnt)
+          cnt--;
 
         if (!cnt)
-	      this.message_list.remove_row(row.uid);
-	  }
-	  row = row.nextSibling;
+          this.message_list.remove_row(row.uid);
+      }
+      row = row.nextSibling;
     }
   };
 
@@ -2494,23 +2496,23 @@
     if (!mbox || mbox == this.env.mailbox || (!this.env.uid && (!this.message_list || !this.message_list.get_selection().length)))
       return;
 
-    var a_uids = [],
+    var a_uids = [], n, selection,
       lock = this.display_message(this.get_label('copyingmessage'), 'loading'),
-      add_url = '&_target_mbox='+urlencode(mbox)+'&_from='+(this.env.action ? this.env.action : '');
+      post_data = {_mbox: this.env.mailbox, _target_mbox: mbox, _from: (this.env.action ? this.env.action : '')};
 
     if (this.env.uid)
       a_uids[0] = this.env.uid;
     else {
-      var selection = this.message_list.get_selection();
-      for (var n in selection) {
+      selection = this.message_list.get_selection();
+      for (n in selection) {
         a_uids.push(selection[n]);
       }
     }
 
-    add_url += '&_uid='+this.uids_to_list(a_uids);
+    post_data._uid = this.uids_to_list(a_uids);
 
     // send request to server
-    this.http_post('copy', '_mbox='+urlencode(this.env.mailbox)+add_url, lock);
+    this.http_post('copy', post_data, lock);
   };
 
   // move selected messages to the specified mailbox
@@ -2524,19 +2526,18 @@
       return;
 
     var lock = false,
-      add_url = '&_target_mbox='+urlencode(mbox)+'&_from='+(this.env.action ? this.env.action : '');
+      add_post = {_target_mbox: mbox, _from: (this.env.action ? this.env.action : '')};
 
     // show wait message
-    if (this.env.action == 'show') {
+    if (this.env.action == 'show')
       lock = this.set_busy(true, 'movingmessage');
-    }
     else
       this.show_contentframe(false);
 
     // Hide message command buttons until a message is selected
     this.enable_command(this.env.message_commands, false);
 
-    this._with_selected_messages('moveto', lock, add_url);
+    this._with_selected_messages('moveto', lock, add_post);
   };
 
   // delete selected messages from the current mailbox
@@ -2591,14 +2592,17 @@
       return;
 
     this.show_contentframe(false);
-    this._with_selected_messages('delete', false, '&_from='+(this.env.action ? this.env.action : ''));
+    this._with_selected_messages('delete', false, {_from: this.env.action ? this.env.action : ''});
   };
 
   // Send a specifc moveto/delete request with UIDs of all selected messages
   // @private
-  this._with_selected_messages = function(action, lock, add_url)
+  this._with_selected_messages = function(action, lock, post_data)
   {
-    var a_uids = [], count = 0, msg;
+    var a_uids = [], count = 0, msg, lock;
+
+    if (typeof(post_data) != 'object')
+      post_data = {};
 
     if (this.env.uid)
       a_uids[0] = this.env.uid;
@@ -2630,18 +2634,19 @@
 
     // also send search request to get the right messages
     if (this.env.search_request)
-      add_url += '&_search='+this.env.search_request;
+      post_data._search = this.env.search_request;
 
     if (this.env.display_next && this.env.next_uid)
-      add_url += '&_next_uid='+this.env.next_uid;
+      post_data._next_uid = this.env.next_uid;
 
     if (count < 0)
-      add_url += '&_count='+(count*-1);
-    else if (count > 0) 
-      // remove threads from the end of the list
+      post_data._count = (count*-1);
+    // remove threads from the end of the list
+    else if (count > 0)
       this.delete_excessive_thread_rows();
 
-    add_url += '&_uid='+this.uids_to_list(a_uids);
+    post_data._uid = this.uids_to_list(a_uids);
+    post_data._mbox = this.env.mailbox;
 
     if (!lock) {
       msg = action == 'moveto' ? 'movingmessage' : 'deletingmessage';
@@ -2649,7 +2654,7 @@
     }
 
     // send request to server
-    this.http_post(action, '_mbox='+urlencode(this.env.mailbox)+add_url, lock);
+    this.http_post(action, post_data, lock);
   };
 
   // set a specific flag to one or more messages
@@ -2708,7 +2713,7 @@
   this.toggle_read_status = function(flag, a_uids)
   {
     var i, len = a_uids.length,
-      url = '_uid='+this.uids_to_list(a_uids)+'&_flag='+flag,
+      post_data = {_uid: this.uids_to_list(a_uids), _flag: flag},
       lock = this.display_message(this.get_label('markingmessage'), 'loading');
 
     // mark all message rows as read/unread
@@ -2717,9 +2722,9 @@
 
     // also send search request to get the right messages
     if (this.env.search_request)
-      url += '&_search='+this.env.search_request;
+      post_data._search = this.env.search_request;
 
-    this.http_post('mark', url, lock);
+    this.http_post('mark', post_data, lock);
 
     for (i=0; i<len; i++)
       this.update_thread_root(a_uids[i], flag);
@@ -2729,7 +2734,7 @@
   this.toggle_flagged_status = function(flag, a_uids)
   {
     var i, len = a_uids.length,
-      url = '_uid='+this.uids_to_list(a_uids)+'&_flag='+flag,
+      post_data = {_uid: this.uids_to_list(a_uids), _flag: flag},
       lock = this.display_message(this.get_label('markingmessage'), 'loading');
 
     // mark all message rows as flagged/unflagged
@@ -2738,9 +2743,9 @@
 
     // also send search request to get the right messages
     if (this.env.search_request)
-      url += '&_search='+this.env.search_request;
+      post_data._search = this.env.search_request;
 
-    this.http_post('mark', url, lock);
+    this.http_post('mark', post_data, lock);
   };
 
   // mark all message rows as deleted/undeleted
@@ -2778,7 +2783,7 @@
   this.flag_as_undeleted = function(a_uids)
   {
     var i, len=a_uids.length,
-      url = '_uid='+this.uids_to_list(a_uids)+'&_flag=undelete',
+      post_data = {_uid: this.uids_to_list(a_uids), _flag: 'undelete'},
       lock = this.display_message(this.get_label('markingmessage'), 'loading');
 
     for (i=0; i<len; i++)
@@ -2786,16 +2791,17 @@
 
     // also send search request to get the right messages
     if (this.env.search_request)
-      url += '&_search='+this.env.search_request;
+      post_data._search = this.env.search_request;
 
-    this.http_post('mark', url, lock);
+    this.http_post('mark', post_data, lock);
     return true;
   };
 
   this.flag_as_deleted = function(a_uids)
   {
-    var add_url = '',
-      r_uids = [],
+    var r_uids = [],
+      post_data = {_uid: this.uids_to_list(a_uids), _flag: 'delete'},
+      lock = this.display_message(this.get_label('markingmessage'), 'loading'),
       rows = this.message_list ? this.message_list.rows : [],
       count = 0;
 
@@ -2805,12 +2811,12 @@
         if (rows[uid].unread)
           r_uids[r_uids.length] = uid;
 
-	    if (this.env.skip_deleted) {
-	      count += this.update_thread(uid);
+        if (this.env.skip_deleted) {
+          count += this.update_thread(uid);
           this.message_list.remove_row(uid, (this.env.display_next && i == this.message_list.selection.length-1));
-	    }
-	    else
-	      this.set_message(uid, 'deleted', true);
+        }
+        else
+          this.set_message(uid, 'deleted', true);
       }
     }
 
@@ -2819,29 +2825,27 @@
       if(!this.env.display_next)
         this.message_list.clear_selection();
       if (count < 0)
-        add_url += '&_count='+(count*-1);
+        post_data._count = (count*-1);
       else if (count > 0) 
         // remove threads from the end of the list
         this.delete_excessive_thread_rows();
     }
 
-    add_url = '&_from='+(this.env.action ? this.env.action : ''),
-      lock = this.display_message(this.get_label('markingmessage'), 'loading');
+    if (this.env.action)
+      post_data._from = this.env.action;
 
     // ??
     if (r_uids.length)
-      add_url += '&_ruid='+this.uids_to_list(r_uids);
+      post_data._ruid = this.uids_to_list(r_uids);
 
-    if (this.env.skip_deleted) {
-      if (this.env.display_next && this.env.next_uid)
-        add_url += '&_next_uid='+this.env.next_uid;
-    }
+    if (this.env.skip_deleted && this.env.display_next && this.env.next_uid)
+      post_data._next_uid = this.env.next_uid;
 
     // also send search request to get the right messages
     if (this.env.search_request)
-      add_url += '&_search='+this.env.search_request;
+      post_data._search = this.env.search_request;
 
-    this.http_post('mark', '_uid='+this.uids_to_list(a_uids)+'&_flag=delete'+add_url, lock);
+    this.http_post('mark', post_data, lock);
     return true;
   };
 
@@ -2888,24 +2892,23 @@
 
   this.expunge_mailbox = function(mbox)
   {
-    var lock, url = '_mbox='+urlencode(mbox);
+    var lock, post_data = {_mbox: mbox};
 
     // lock interface if it's the active mailbox
     if (mbox == this.env.mailbox) {
       lock = this.set_busy(true, 'loading');
-      url += '&_reload=1';
+      post_data._reload = 1;
       if (this.env.search_request)
-        url += '&_search='+this.env.search_request;
+        post_data._search = this.env.search_request;
     }
 
     // send request to server
-    this.http_post('expunge', url, lock);
+    this.http_post('expunge', post_data, lock);
   };
 
   this.purge_mailbox = function(mbox)
   {
-    var lock = false,
-      url = '_mbox='+urlencode(mbox);
+    var lock, post_data = {_mbox: mbox};
 
     if (!confirm(this.get_label('purgefolderconfirm')))
       return false;
@@ -2913,11 +2916,11 @@
     // lock interface if it's the active mailbox
     if (mbox == this.env.mailbox) {
        lock = this.set_busy(true, 'loading');
-       url += '&_reload=1';
+       post_data._reload = 1;
      }
 
     // send request to server
-    this.http_post('purge', url, lock);
+    this.http_post('purge', post_data, lock);
   };
 
   // test if purge command is allowed
@@ -3013,7 +3016,7 @@
     obj[bw.ie || bw.safari || bw.chrome ? 'keydown' : 'keypress'](function(e) { return ref.ksearch_keydown(e, this, props); })
       .attr('autocomplete', 'off');
   };
-  
+
   this.compose_recipient_select = function(list)
   {
     this.enable_command('add-recipient', list.selection.length > 0);
@@ -3022,7 +3025,7 @@
   this.compose_add_recipient = function(field)
   {
     var recipients = [], input = $('#_'+field);
-    
+
     if (this.contact_list && this.contact_list.selection.length) {
       for (var id, n=0; n < this.contact_list.selection.length; n++) {
         id = this.contact_list.selection[n];
@@ -3033,7 +3036,7 @@
           if (id.charAt(0) == 'E' && this.env.contactdata[id].indexOf('@') < 0 && input.length) {
             var gid = id.substr(1);
             this.group2expand[gid] = { name:this.env.contactdata[id], input:input.get(0) };
-            this.http_request('group-expand', '_source='+urlencode(this.env.source)+'&_gid='+urlencode(gid), false);
+            this.http_request('group-expand', {_source: this.env.source, _gid: gid}, false);
           }
         }
       }
@@ -3138,7 +3141,7 @@
       tinyMCE.execCommand('mceAddControl', false, props.id);
 
       if (this.env.default_font)
-        window.setTimeout(function() {
+        setTimeout(function() {
           $(tinyMCE.get(props.id).getBody()).css('font-family', rcmail.env.default_font);
         }, 500);
     }
@@ -3237,7 +3240,7 @@
   this.auto_save_start = function()
   {
     if (this.env.draft_autosave)
-      this.save_timer = self.setTimeout(function(){ ref.command("savedraft"); }, this.env.draft_autosave * 1000);
+      this.save_timer = setTimeout(function(){ ref.command("savedraft"); }, this.env.draft_autosave * 1000);
 
     // Unlock interface now that saving is complete
     this.busy = false;
@@ -3246,20 +3249,11 @@
   this.compose_field_hash = function(save)
   {
     // check input fields
-    var ed, str = '',
-      value_to = $("[name='_to']").val(),
-      value_cc = $("[name='_cc']").val(),
-      value_bcc = $("[name='_bcc']").val(),
-      value_subject = $("[name='_subject']").val();
+    var ed, i, val, str = '', hash_fields = ['to', 'cc', 'bcc', 'subject'];
 
-    if (value_to)
-      str += value_to+':';
-    if (value_cc)
-      str += value_cc+':';
-    if (value_bcc)
-      str += value_bcc+':';
-    if (value_subject)
-      str += value_subject+':';
+    for (i=0; i<hash_fields.length; i++)
+      if (val = $('[name="_' + hash_fields[i] + '"]').val())
+        str += val + ':';
 
     if (window.tinyMCE && (ed = tinyMCE.get(this.env.composebody)))
       str += ed.getContent();
@@ -3522,7 +3516,7 @@
 
   this.upload_progress_start = function(action, name)
   {
-    window.setTimeout(function() { rcmail.http_request(action, {_progress: name}); },
+    setTimeout(function() { rcmail.http_request(action, {_progress: name}); },
       this.env.upload_progress_time * 1000);
   };
 
@@ -3543,7 +3537,7 @@
   this.add_contact = function(value)
   {
     if (value)
-      this.http_post('addcontact', '_address='+value);
+      this.http_post('addcontact', {_address: value});
 
     return true;
   };
@@ -3552,18 +3546,23 @@
   this.qsearch = function(value)
   {
     if (value != '') {
-      var n, lock = this.set_busy(true, 'searching');
+      var r, lock = this.set_busy(true, 'searching'),
+        url = this.search_params(value);
 
       if (this.message_list)
         this.clear_message_list();
       else if (this.contact_list)
         this.list_contacts_clear();
 
+      if (this.env.source)
+        url._source = this.env.source;
+      if (this.env.group)
+        url._gid = this.env.group;
+
       // reset vars
       this.env.current_page = 1;
-      r = this.http_request('search', this.search_params(value)
-        + (this.env.source ? '&_source='+urlencode(this.env.source) : '')
-        + (this.env.group ? '&_gid='+urlencode(this.env.group) : ''), lock);
+
+      r = this.http_request('search', url, lock);
 
       this.env.qsearch = {lock: lock, request: r};
     }
@@ -3572,7 +3571,7 @@
   // build URL params for search
   this.search_params = function(search, filter)
   {
-    var n, url = [], mods_arr = [],
+    var n, url = {}, mods_arr = [],
       mods = this.env.search_mods,
       mbox = this.env.mailbox;
 
@@ -3583,10 +3582,10 @@
       search = this.gui_objects.qsearchbox.value;
 
     if (filter)
-      url.push('_filter=' + urlencode(filter));
+      url._filter = filter;
 
     if (search) {
-      url.push('_q='+urlencode(search));
+      url._q = search;
 
       if (mods && this.message_list)
         mods = mods[mbox] ? mods[mbox] : mods['*'];
@@ -3594,14 +3593,14 @@
       if (mods) {
         for (n in mods)
           mods_arr.push(n);
-        url.push('_headers='+mods_arr.join(','));
+        url._headers = mods_arr.join(',');
       }
     }
 
     if (mbox)
-      url.push('_mbox='+urlencode(mbox));
+      url._mbox = mbox;
 
-    return url.join('&');
+    return url;
   };
 
   // reset quick-search form
@@ -3622,7 +3621,7 @@
   {
     this.display_message(msg, type);
     // before redirect we need to wait some time for Chrome (#1486177)
-    window.setTimeout(function(){ ref.list_mailbox(); }, 500);
+    setTimeout(function(){ ref.list_mailbox(); }, 500);
   };
 
 
@@ -3680,11 +3679,11 @@
       case 37:  // left
       case 39:  // right
         if (mod != SHIFT_KEY)
-	      return;
+          return;
     }
 
     // start timer
-    this.ksearch_timer = window.setTimeout(function(){ ref.ksearch_get_results(props); }, 200);
+    this.ksearch_timer = setTimeout(function(){ ref.ksearch_get_results(props); }, 200);
     this.ksearch_input = obj;
 
     return true;
@@ -3729,7 +3728,7 @@
     if (typeof this.env.contacts[id] === 'object' && this.env.contacts[id].id) {
       insert += this.env.contacts[id].name + this.env.recipients_delimiter;
       this.group2expand[this.env.contacts[id].id] = $.extend({ input: this.ksearch_input }, this.env.contacts[id]);
-      this.http_request('mail/group-expand', '_source='+urlencode(this.env.contacts[id].source)+'&_gid='+urlencode(this.env.contacts[id].id), false);
+      this.http_request('mail/group-expand', {_source: this.env.contacts[id].source, _gid: this.env.contacts[id].id}, false);
     }
     else if (typeof this.env.contacts[id] === 'string') {
       insert = this.env.contacts[id] + this.env.recipients_delimiter;
@@ -3803,6 +3802,7 @@
       return;
 
     var i, lock, source, xhr, reqid = new Date().getTime(),
+      post_data = {_search: q, _id: reqid},
       threads = props && props.threads ? props.threads : 1,
       sources = props && props.sources ? props.sources : [],
       action = props && props.action ? props.action : 'mail/autocomplete';
@@ -3812,12 +3812,12 @@
 
     for (i=0; i<threads; i++) {
       source = this.ksearch_data.sources.shift();
-      if (threads > 1 && source === null)
+      if (threads > 1 && source === undefined)
         break;
 
+      post_data._source = source ? source : '';
       lock = this.display_message(this.get_label('searching'), 'loading');
-      xhr = this.http_post(action, '_search='+urlencode(q)+'&_id='+reqid
-        + (source ? '&_source='+urlencode(source) : ''), lock);
+      xhr = this.http_post(action, post_data, lock);
 
       this.ksearch_data.locks.push(lock);
       this.ksearch_data.requests.push(xhr);
@@ -3895,11 +3895,11 @@
     if (data.id == reqid) {
       data.num--;
       if (maxlen > 0 && data.sources.length) {
-        var lock, xhr, source = data.sources.shift();
+        var lock, xhr, source = data.sources.shift(), post_data;
         if (source) {
+          post_data = {_search: value, _id: reqid, _source: source};
           lock = this.display_message(this.get_label('searching'), 'loading');
-          xhr = this.http_post(data.action, '_search='+urlencode(value)+'&_id='+reqid
-            +'&_source='+urlencode(source), lock);
+          xhr = this.http_post(data.action, post_data, lock);
 
           this.ksearch_data.locks.push(lock);
           this.ksearch_data.requests.push(xhr);
@@ -3991,7 +3991,7 @@
       source = this.env.source ? this.env.address_sources[this.env.source] : null;
 
     if (id = list.get_single_selection())
-      this.preview_timer = window.setTimeout(function(){ ref.load_contact(id, 'show'); }, 200);
+      this.preview_timer = setTimeout(function(){ ref.load_contact(id, 'show'); }, 200);
     else if (this.env.contentframe)
       this.show_contentframe(false);
 
@@ -4012,6 +4012,10 @@
       }
     }
 
+    // if a group is currently selected, and there is at least one contact selected
+    // thend we can enable the group-remove-selected command
+    this.enable_command('group-remove-selected', typeof this.env.group != 'undefined' && list.selection.length > 0);
+
     this.enable_command('compose', this.env.group || list.selection.length > 0);
     this.enable_command('edit', id && writable);
     this.enable_command('delete', list.selection.length && writable);
@@ -4021,7 +4025,7 @@
 
   this.list_contacts = function(src, group, page)
   {
-    var folder, add_url = '',
+    var folder, url = {},
       target = window;
 
     if (!src)
@@ -4055,20 +4059,22 @@
 
     if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
       target = window.frames[this.env.contentframe];
-      add_url = '&_framed=1';
+      url._framed = 1;
     }
 
     if (group)
-      add_url += '&_gid='+group;
+      url._gid = group;
     if (page)
-      add_url += '&_page='+page;
+      url._page = page;
+    if (src)
+      url._source = src;
 
     // also send search request to get the correct listing
     if (this.env.search_request)
-      add_url += '&_search='+this.env.search_request;
+      url._search = this.env.search_request;
 
     this.set_busy(true, 'loading');
-    this.location_href(this.env.comm_path + (src ? '&_source='+urlencode(src) : '') + add_url, target);
+    this.location_href(url, target);
   };
 
   // send remote request to load contacts list
@@ -4078,18 +4084,21 @@
     this.list_contacts_clear();
 
     // send request to server
-    var url = (src ? '_source='+urlencode(src) : '') + (page ? (src?'&':'') + '_page='+page : ''),
-      lock = this.set_busy(true, 'loading');
+    var url = {}, lock = this.set_busy(true, 'loading');
+
+    if (src)
+      url._source = src;
+    if (page)
+      url._page = page;
+    if (group)
+      url._gid = group;
 
     this.env.source = src;
     this.env.group = group;
 
-    if (group)
-      url += '&_gid='+group;
-
     // also send search request to get the right messages
     if (this.env.search_request)
-      url += '&_search='+this.env.search_request;
+      url._search = this.env.search_request;
 
     this.http_request(this.env.task == 'mail' ? 'list-contacts' : 'list', url, lock);
   };
@@ -4105,10 +4114,10 @@
   // load contact record
   this.load_contact = function(cid, action, framed)
   {
-    var add_url = '', target = window;
+    var url = {}, target = window;
 
     if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
-      add_url = '&_framed=1';
+      url._framed = 1;
       target = window.frames[this.env.contentframe];
       this.show_contentframe(true);
 
@@ -4124,12 +4133,15 @@
 
     if (action && (cid || action=='add') && !this.drag_active) {
       if (this.env.group)
-        add_url += '&_gid='+urlencode(this.env.group);
+        url._gid = this.env.group;
 
-      this.location_href(this.env.comm_path+'&_action='+action
-        +'&_source='+urlencode(this.env.source)
-        +'&_cid='+urlencode(cid) + add_url, target, true);
+      url._action = action;
+      url._source = this.env.source;
+      url._cid = cid;
+
+      this.location_href(url, target, true);
     }
+
     return true;
   };
 
@@ -4137,11 +4149,11 @@
   this.group_member_change = function(what, cid, source, gid)
   {
     what = what == 'add' ? 'add' : 'del';
-    var lock = this.display_message(this.get_label(what == 'add' ? 'addingmember' : 'removingmember'), 'loading');
+    var label = this.get_label(what == 'add' ? 'addingmember' : 'removingmember'),
+      lock = this.display_message(label, 'loading'),
+      post_data = {_cid: cid, _source: source, _gid: gid};
 
-    this.http_post('group-'+what+'members', '_cid='+urlencode(cid)
-      + '&_source='+urlencode(source)
-      + '&_gid='+urlencode(gid), lock);
+    this.http_post('group-'+what+'members', post_data, lock);
   };
 
   // copy a contact to the specified target (group or directory)
@@ -4153,19 +4165,18 @@
     if (to.type == 'group' && to.source == this.env.source)
       this.group_member_change('add', cid, to.source, to.id);
     else if (to.type == 'group' && !this.env.address_sources[to.source].readonly) {
-      var lock = this.display_message(this.get_label('copyingcontact'), 'loading');
-      this.http_post('copy', '_cid='+urlencode(cid)
-        + '&_source='+urlencode(this.env.source)
-        + '&_to='+urlencode(to.source)
-        + '&_togid='+urlencode(to.id)
-        + (this.env.group ? '&_gid='+urlencode(this.env.group) : ''), lock);
+      var lock = this.display_message(this.get_label('copyingcontact'), 'loading'),
+        post_data = {_cid: cid, _source: this.env.source, _to: to.source, _togid: to.id,
+          _gid: (this.env.group ? this.env.group : '')};
+
+      this.http_post('copy', post_data, lock);
     }
     else if (to.id != this.env.source && cid && this.env.address_sources[to.id] && !this.env.address_sources[to.id].readonly) {
-      var lock = this.display_message(this.get_label('copyingcontact'), 'loading');
-      this.http_post('copy', '_cid='+urlencode(cid)
-        + '&_source='+urlencode(this.env.source)
-        + '&_to='+urlencode(to.id)
-        + (this.env.group ? '&_gid='+urlencode(this.env.group) : ''), lock);
+      var lock = this.display_message(this.get_label('copyingcontact'), 'loading'),
+        post_data = {_cid: cid, _source: this.env.source, _to: to.id,
+          _gid: (this.env.group ? this.env.group : '')};
+
+      this.http_post('copy', post_data, lock);
     }
   };
 
@@ -4178,7 +4189,9 @@
     if (!(selection.length || this.env.cid) || (!undelete && !confirm(this.get_label('deletecontactconfirm'))))
       return;
 
-    var id, n, a_cids = [], qs = '';
+    var id, n, a_cids = [],
+      post_data = {_source: this.env.source, _from: (this.env.action ? this.env.action : '')},
+      lock = this.display_message(this.get_label('contactdeleting'), 'loading');
 
     if (this.env.cid)
       a_cids.push(this.env.cid);
@@ -4194,18 +4207,17 @@
         this.show_contentframe(false);
     }
 
+    post_data._cid = a_cids.join(',');
+
     if (this.env.group)
-      qs += '&_gid='+urlencode(this.env.group);
+      post_data._gid = this.env.group;
 
     // also send search request to get the right records from the next page
     if (this.env.search_request)
-      qs += '&_search='+this.env.search_request;
+      post_data._search = this.env.search_request;
 
     // send request to server
-    this.http_post('delete', '_cid='+urlencode(a_cids.join(','))
-      +'&_source='+urlencode(this.env.source)
-      +'&_from='+(this.env.action ? this.env.action : '')+qs,
-      this.display_message(this.get_label('contactdeleting'), 'loading'));
+    this.http_post('delete', post_data, lock)
 
     return true;
   };
@@ -4334,7 +4346,7 @@
   {
     if (this.env.group && confirm(this.get_label('deletegroupconfirm'))) {
       var lock = this.set_busy(true, 'groupdeleting');
-      this.http_post('group-delete', '_source='+urlencode(this.env.source)+'&_gid='+urlencode(this.env.group), lock);
+      this.http_post('group-delete', {_source: this.env.source, _gid: this.env.group}, lock);
     }
   };
 
@@ -4371,6 +4383,25 @@
     this.name_input.select().focus();
   };
 
+  //remove selected contacts from current active group
+  this.group_remove_selected = function()
+  {
+    ref.http_post('group-delmembers', {_cid: this.contact_list.selection,
+      _source: this.env.source, _gid: this.env.group});
+  };
+
+  //callback after deleting contact(s) from current group
+  this.remove_group_contacts = function(props)
+  {
+    if('undefined' != typeof this.env.group && (this.env.group === props.gid)){
+      var n, selection = this.contact_list.get_selection();
+      for (n=0; n<selection.length; n++) {
+        id = selection[n];
+        this.contact_list.remove_row(id, (n == selection.length-1));
+      }
+    }
+  }
+
   // handler for keyboard events on the input field
   this.add_input_keydown = function(e)
   {
@@ -4385,11 +4416,11 @@
         var lock = this.set_busy(true, 'loading');
 
         if (itype == 'contactsearch')
-          this.http_post('search-create', '_search='+urlencode(this.env.search_request)+'&_name='+urlencode(newname), lock);
+          this.http_post('search-create', {_search: this.env.search_request, _name: newname}, lock);
         else if (this.env.group_renaming)
-          this.http_post('group-rename', '_source='+urlencode(this.env.source)+'&_gid='+urlencode(this.env.group)+'&_name='+urlencode(newname), lock);
+          this.http_post('group-rename', {_source: this.env.source, _gid: this.env.group, _name: newname}, lock);
         else
-          this.http_post('group-create', '_source='+urlencode(this.env.source)+'&_name='+urlencode(newname), lock);
+          this.http_post('group-create', {_source: this.env.source, _name: newname}, lock);
       }
       return false;
     }
@@ -4515,10 +4546,13 @@
 
   this.init_edit_field = function(col, elem)
   {
+    var label = this.env.coltypes[col].label;
+
     if (!elem)
       elem = $('.ff_' + col);
 
-    elem.placeholder(ref.env.coltypes[col].label);
+    if (label)
+      elem.placeholder(label);
   };
 
   this.insert_edit_field = function(col, section, menu)
@@ -4533,8 +4567,15 @@
       var lastelem = $('.ff_'+col),
         appendcontainer = $('#contactsection'+section+' .contactcontroller'+col);
 
-      if (!appendcontainer.length)
-        appendcontainer = $('<fieldset>').addClass('contactfieldgroup contactcontroller'+col).insertAfter($('#contactsection'+section+' .contactfieldgroup').last());
+      if (!appendcontainer.length) {
+        var sect = $('#contactsection'+section),
+          lastgroup = $('.contactfieldgroup', sect).last();
+        appendcontainer = $('<fieldset>').addClass('contactfieldgroup contactcontroller'+col);
+        if (lastgroup.length)
+          appendcontainer.insertAfter(lastgroup);
+        else
+          sect.prepend(appendcontainer);
+      }
 
       if (appendcontainer.length && appendcontainer.get(0).nodeName == 'FIELDSET') {
         var input, colprop = this.env.coltypes[col],
@@ -4558,6 +4599,14 @@
 
           if (colprop.type == 'date' && $.datepicker)
             input.datepicker();
+        }
+        else if (colprop.type == 'textarea') {
+          input = $('<textarea>')
+            .addClass('ff_'+col)
+            .attr({ name: '_'+col+name_suffix, cols:colprop.size, rows:colprop.rows })
+            .appendTo(cell);
+
+          this.init_edit_field(col, input);
         }
         else if (colprop.type == 'composite') {
           var childcol, cp, first, templ, cols = [], suffices = [];
@@ -4687,15 +4736,15 @@
   // load advanced search page
   this.advanced_search = function()
   {
-    var add_url = '&_form=1', target = window;
+    var url = {_form: 1, _action: 'search'}, target = window;
 
     if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
-      add_url += '&_framed=1';
+      url._framed = 1;
       target = window.frames[this.env.contentframe];
       this.contact_list.clear_selection();
     }
 
-    this.location_href(this.env.comm_path+'&_action=search'+add_url, target, true);
+    this.location_href(url, target, true);
 
     return true;
   };
@@ -4768,7 +4817,7 @@
   {
     if (this.env.search_request) {
       var lock = this.set_busy(true, 'savedsearchdeleting');
-      this.http_post('search-delete', '_sid='+urlencode(this.env.search_id), lock);
+      this.http_post('search-delete', {_sid: this.env.search_id}, lock);
     }
   };
 
@@ -4802,7 +4851,7 @@
 
     // reset vars
     this.env.current_page = 1;
-    this.http_request('search', '_sid='+urlencode(id), lock);
+    this.http_request('search', {_sid: id}, lock);
   };
 
 
@@ -4813,14 +4862,15 @@
   // preferences section select and load options frame
   this.section_select = function(list)
   {
-    var id = list.get_single_selection(), add_url = '', target = window;
+    var id = list.get_single_selection(), target = window,
+      url = {_action: 'edit-prefs', _section: id};
 
     if (id) {
       if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
-        add_url = '&_framed=1';
+        url._framed = 1;
         target = window.frames[this.env.contentframe];
       }
-      this.location_href(this.env.comm_path+'&_action=edit-prefs&_section='+id+add_url, target, true);
+      this.location_href(url, target, true);
     }
 
     return true;
@@ -4841,17 +4891,18 @@
     if (action == 'edit-identity' && (!id || id == this.env.iid))
       return false;
 
-    var add_url = '', target = window;
+    var target = window,
+      url = {_action: action, _iid: id};
 
     if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
-      add_url = '&_framed=1';
+      url._framed = 1;
       target = window.frames[this.env.contentframe];
       document.getElementById(this.env.contentframe).style.visibility = 'inherit';
     }
 
     if (action && (id || action == 'add-identity')) {
       this.set_busy(true);
-      this.location_href(this.env.comm_path+'&_action='+action+'&_iid='+id+add_url, target);
+      this.location_href(url, target);
     }
 
     return true;
@@ -4976,7 +5027,7 @@
         newname = this.env.dstfolder === '' ? basename : this.env.dstfolder+this.env.delimiter+basename;
 
       if (newname != this.env.mailbox) {
-        this.http_post('rename-folder', '_folder_oldname='+urlencode(this.env.mailbox)+'&_folder_newname='+urlencode(newname), this.set_busy(true, 'foldermoving'));
+        this.http_post('rename-folder', {_folder_oldname: this.env.mailbox, _folder_newname: newname}, this.set_busy(true, 'foldermoving'));
         this.subscription_list.draglayer.hide();
       }
     }
@@ -4998,7 +5049,7 @@
 
     if (folder && confirm(this.get_label('deletefolderconfirm'))) {
       var lock = this.set_busy(true, 'folderdeleting');
-      this.http_post('delete-folder', '_mbox='+urlencode(folder), lock);
+      this.http_post('delete-folder', {_mbox: folder}, lock);
     }
   };
 
@@ -5196,7 +5247,7 @@
   {
     if (folder) {
       var lock = this.display_message(this.get_label('foldersubscribing'), 'loading');
-      this.http_post('subscribe', '_mbox='+urlencode(folder), lock);
+      this.http_post('subscribe', {_mbox: folder}, lock);
     }
   };
 
@@ -5204,7 +5255,7 @@
   {
     if (folder) {
       var lock = this.display_message(this.get_label('folderunsubscribing'), 'loading');
-      this.http_post('unsubscribe', '_mbox='+urlencode(folder), lock);
+      this.http_post('unsubscribe', {_mbox: folder}, lock);
     }
   };
 
@@ -5233,12 +5284,10 @@
       url += '&_framed=1';
     }
 
-    if (String(target.location.href).indexOf(url) >= 0 && !force) {
+    if (String(target.location.href).indexOf(url) >= 0 && !force)
       this.show_contentframe(true);
-    }
-    else {
+    else
       this.location_href(this.env.comm_path+url, target, true);
-    }
   };
 
   // disables subscription checkbox (for protected folder)
@@ -5252,7 +5301,7 @@
   this.folder_size = function(folder)
   {
     var lock = this.set_busy(true, 'loading');
-    this.http_post('folder-size', '_mbox='+urlencode(folder), lock);
+    this.http_post('folder-size', {_mbox: folder}, lock);
   };
 
   this.folder_size_update = function(size)
@@ -5327,7 +5376,7 @@
       obj = document.getElementById(button.id);
 
       // get default/passive setting of the button
-      if (obj && button.type=='image' && !button.status) {
+      if (obj && button.type == 'image' && !button.status) {
         button.pas = obj._original_src ? obj._original_src : obj.src;
         // respect PNG fix on IE browsers
         if (obj.runtimeStyle && obj.runtimeStyle.filter && obj.runtimeStyle.filter.match(/src=['"]([^'"]+)['"]/))
@@ -5337,7 +5386,7 @@
         button.pas = String(obj.className);
 
       // set image according to button state
-      if (obj && button.type=='image' && button[state]) {
+      if (obj && button.type == 'image' && button[state]) {
         button.status = state;
         obj.src = button[state];
       }
@@ -5484,7 +5533,7 @@
       }
       // add element and set timeout
       this.messages[key].elements.push(id);
-      window.setTimeout(function() { ref.hide_message(id, type == 'loading'); }, timeout);
+      setTimeout(function() { ref.hide_message(id, type == 'loading'); }, timeout);
       return id;
     }
 
@@ -5504,7 +5553,7 @@
     this.triggerEvent('message', { message:msg, type:type, timeout:timeout, object:obj });
 
     if (timeout > 0)
-      window.setTimeout(function() { ref.hide_message(id, type == 'loading'); }, timeout);
+      setTimeout(function() { ref.hide_message(id, type == 'loading'); }, timeout);
     return id;
   };
 
@@ -5784,31 +5833,31 @@
   };
 
   // display all-headers row and fetch raw message headers
-  this.load_headers = function(elem)
+  this.show_headers = function(props, elem)
   {
     if (!this.gui_objects.all_headers_row || !this.gui_objects.all_headers_box || !this.env.uid)
       return;
 
     $(elem).removeClass('show-headers').addClass('hide-headers');
     $(this.gui_objects.all_headers_row).show();
-    elem.onclick = function() { rcmail.hide_headers(elem); };
+    elem.onclick = function() { rcmail.command('hide-headers', '', elem); };
 
     // fetch headers only once
     if (!this.gui_objects.all_headers_box.innerHTML) {
       var lock = this.display_message(this.get_label('loading'), 'loading');
-      this.http_post('headers', '_uid='+this.env.uid, lock);
+      this.http_post('headers', {_uid: this.env.uid}, lock);
     }
   };
 
   // hide all-headers row
-  this.hide_headers = function(elem)
+  this.hide_headers = function(props, elem)
   {
     if (!this.gui_objects.all_headers_row || !this.gui_objects.all_headers_box)
       return;
 
     $(elem).removeClass('hide-headers').addClass('show-headers');
     $(this.gui_objects.all_headers_row).hide();
-    elem.onclick = function() { rcmail.load_headers(elem); };
+    elem.onclick = function() { rcmail.command('show-headers', '', elem); };
   };
 
 
@@ -5860,7 +5909,7 @@
     else
       query._action = this.env.action;
 
-    var base = this.env.comm_path;
+    var base = this.env.comm_path, k, param = {};
 
     // overwrite task name
     if (query._action.match(/([a-z]+)\/([a-z0-9-_.]+)/)) {
@@ -5869,8 +5918,7 @@
     }
 
     // remove undefined values
-    var param = {};
-    for (var k in query) {
+    for (k in query) {
       if (query[k] !== undefined && query[k] !== null)
         param[k] = query[k];
     }
@@ -5898,6 +5946,9 @@
   {
     if (frame)
       this.lock_frame();
+
+    if (typeof url == 'object')
+      url = this.env.comm_path + '&' + $.param(url);
 
     // simulate real link click to force IE to send referer header
     if (bw.ie && target == window)
@@ -5930,7 +5981,7 @@
     return $.ajax({
       type: 'GET', url: url, data: { _unlock:(lock?lock:0) }, dataType: 'json',
       success: function(data){ ref.http_response(data); },
-      error: function(o, status, err) { rcmail.http_error(o, status, err, lock); }
+      error: function(o, status, err) { ref.http_error(o, status, err, lock, action); }
     });
   };
 
@@ -5962,7 +6013,7 @@
     return $.ajax({
       type: 'POST', url: url, data: postdata, dataType: 'json',
       success: function(data){ ref.http_response(data); },
-      error: function(o, status, err) { rcmail.http_error(o, status, err, lock); }
+      error: function(o, status, err) { ref.http_error(o, status, err, lock, action); }
     });
   };
 
@@ -6094,7 +6145,7 @@
   };
 
   // handle HTTP request errors
-  this.http_error = function(request, status, err, lock)
+  this.http_error = function(request, status, err, lock, action)
   {
     var errmsg = request.statusText;
 
@@ -6103,6 +6154,16 @@
 
     if (request.status && errmsg)
       this.display_message(this.get_label('servererror') + ' (' + errmsg + ')', 'error');
+    else if (status == 'timeout')
+      this.display_message(this.get_label('requesttimedout'), 'error');
+    else if (request.status == 0 && status != 'abort')
+      this.display_message(this.get_label('servererror') + ' (No connection)', 'error');
+
+    // re-send keep-alive requests after 30 seconds
+    if (action == 'keep-alive')
+      setTimeout(function(){ ref.keep_alive(); }, 30000);
+    else if (action == 'check-recent')
+      setTimeout(function(){ ref.check_for_recent(false); }, 30000);
   };
 
   // post the given form to a hidden iframe
@@ -6156,12 +6217,15 @@
   // starts interval for keep-alive/check-recent signal
   this.start_keepalive = function()
   {
+    if (!this.env.keep_alive || this.env.framed)
+      return;
+
     if (this._int)
       clearInterval(this._int);
 
-    if (this.env.keep_alive && !this.env.framed && this.task == 'mail' && this.gui_objects.mailboxlist)
+    if (this.task == 'mail' && this.gui_objects.mailboxlist)
       this._int = setInterval(function(){ ref.check_for_recent(false); }, this.env.keep_alive * 1000);
-    else if (this.env.keep_alive && !this.env.framed && this.task != 'login' && this.env.action != 'print')
+    else if (this.task != 'login' && this.env.action != 'print')
       this._int = setInterval(function(){ ref.keep_alive(); }, this.env.keep_alive * 1000);
   };
 
@@ -6178,23 +6242,23 @@
     if (this.busy)
       return;
 
-    var lock, addurl = '_mbox=' + urlencode(this.env.mailbox);
+    var lock, url = {_mbox: this.env.mailbox};
 
     if (refresh) {
       lock = this.set_busy(true, 'checkingmail');
-      addurl += '&_refresh=1';
+      url._refresh = 1;
       // reset check-recent interval
       this.start_keepalive();
     }
 
     if (this.gui_objects.messagelist)
-      addurl += '&_list=1';
+      url._list = 1;
     if (this.gui_objects.quotadisplay)
-      addurl += '&_quota=1';
+      url._quota = 1;
     if (this.env.search_request)
-      addurl += '&_search=' + this.env.search_request;
+      url._search = this.env.search_request;
 
-    this.http_request('check-recent', addurl, lock);
+    this.http_request('check-recent', url, lock);
   };
 
 
@@ -6222,7 +6286,7 @@
       return obj.selectionEnd;
     else if (document.selection && document.selection.createRange) {
       var range = document.selection.createRange();
-      if (range.parentElement()!=obj)
+      if (range.parentElement() != obj)
         return 0;
 
       var gm = range.duplicate();
@@ -6340,4 +6404,3 @@
 rcube_webmail.prototype.addEventListener = rcube_event_engine.prototype.addEventListener;
 rcube_webmail.prototype.removeEventListener = rcube_event_engine.prototype.removeEventListener;
 rcube_webmail.prototype.triggerEvent = rcube_event_engine.prototype.triggerEvent;
-

--
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