From aa4612e7304d6a8f99842702593954c99a702b4d Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Tue, 02 Oct 2012 14:05:08 -0400
Subject: [PATCH] Fix broken script after failed merge

---
 program/js/app.js |  314 +++++++++++++++++++++++++++------------------------
 1 files changed, 165 insertions(+), 149 deletions(-)

diff --git a/program/js/app.js b/program/js/app.js
index 963049b..3335d94 100644
--- a/program/js/app.js
+++ b/program/js/app.js
@@ -54,10 +54,13 @@
 
   // 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); }
   });
+
+  $(window).bind('beforeunload', function() { rcmail.unload = true; });
 
   // set environment variable(s)
   this.set_env = function(p, value)
@@ -224,7 +227,7 @@
 
         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);
@@ -273,7 +276,7 @@
         // 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();
 
@@ -579,10 +582,6 @@
           this.list_contacts(props);
         break;
 
-      case 'load-headers':
-        this.load_headers(obj);
-        break;
-
       case 'sort':
         var sort_order, sort_col = props;
 
@@ -769,8 +768,8 @@
 
       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);
+          this.add_contact(this.env.sender);
+          setTimeout(function(){ ref.command('load-images'); }, 300);
           break;
         }
 
@@ -788,7 +787,7 @@
             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;
           }
         }
@@ -911,19 +910,25 @@
         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';
@@ -939,7 +944,7 @@
           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(),
@@ -952,13 +957,11 @@
         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;
@@ -1005,7 +1008,7 @@
         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);
           }
@@ -1016,7 +1019,7 @@
         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;
 
@@ -1102,7 +1105,7 @@
       default:
         var func = command.replace(/-/g, '_');
         if (this[func] && typeof this[func] === 'function') {
-          ret = this[func](props);
+          ret = this[func](props, obj);
         }
         break;
     }
@@ -1155,14 +1158,6 @@
     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;
   };
 
@@ -1201,19 +1196,12 @@
     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 : '');
   };
@@ -1346,7 +1334,7 @@
     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;
     }
@@ -1399,15 +1387,15 @@
             // 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;
             }
@@ -1471,29 +1459,21 @@
 
   this.doc_mouse_up = function(e)
   {
-    var model, list, li, id;
+    var model, list, id;
 
     // ignore event if jquery UI dialog is open
     if ($(rcube_event.get_target(e)).closest('.ui-dialog, .ui-widget-overlay').length)
       return;
 
-    if (list = this.message_list) {
-      if (!rcube_mouse_is_over(e, list.list.parentNode))
-        list.blur();
-      else
-        list.focus();
+    if (list = this.message_list)
       model = this.env.mailboxes;
-    }
-    else if (list = this.contact_list) {
-      if (!rcube_mouse_is_over(e, list.list.parentNode))
-        list.blur();
-      else
-        list.focus();
+    else if (list = this.contact_list)
       model = this.env.contactfolders;
-    }
-    else if (this.ksearch_value) {
+    else if (this.ksearch_value)
       this.ksearch_blur();
-    }
+
+    if (list && !rcube_mouse_is_over(e, list.list.parentNode))
+      list.blur();
 
     // handle mouse release when dragging
     if (this.drag_active && model && this.env.last_folder_target) {
@@ -1559,7 +1539,7 @@
 
     // 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);
   };
@@ -1576,7 +1556,7 @@
           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);
       }
     }
   };
@@ -1636,7 +1616,7 @@
     for (i=0; i<cols.length; i++)
       if (cols[i].id && cols[i].id.match(/^rcm/)) {
         name = cols[i].id.replace(/^rcm/, '');
-        this.env.coltypes.push(name == 'to' ? 'from' : name);
+        this.env.coltypes.push(name);
       }
 
     if ((found = $.inArray('flag', this.env.coltypes)) >= 0)
@@ -1829,7 +1809,7 @@
         html = '<span id="flagicn'+uid+'" class="'+css_class+'">&nbsp;</span>';
       }
       else if (c == 'attachment') {
-        if (/application\/|multipart\/m/.test(flags.ctype))
+        if (/application\/|multipart\/(m|signed)/.test(flags.ctype))
           html = '<span class="attachment">&nbsp;</span>';
         else if (/multipart\/report/.test(flags.ctype))
           html = '<span class="report">&nbsp;</span>';
@@ -1850,8 +1830,11 @@
       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') {
@@ -1912,7 +1895,7 @@
       // make sure new columns are added at the end of the list
       var i, idx, name, newcols = [], oldcols = this.env.coltypes;
       for (i=0; i<oldcols.length; i++) {
-        name = oldcols[i] == 'to' ? 'from' : oldcols[i];
+        name = oldcols[i];
         idx = $.inArray(name, cols);
         if (idx != -1) {
           newcols.push(name);
@@ -1962,7 +1945,7 @@
 
       // 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]) {
@@ -2659,34 +2642,37 @@
   // set a specific flag to one or more messages
   this.mark_message = function(flag, uid)
   {
-    var a_uids = [], r_uids = [], len, n, id,
-      selection = this.message_list ? this.message_list.get_selection() : [];
+    var a_uids = [], r_uids = [], len, n, id, selection,
+      list = this.message_list;
 
     if (uid)
       a_uids[0] = uid;
     else if (this.env.uid)
       a_uids[0] = this.env.uid;
-    else if (this.message_list) {
+    else if (list) {
+      selection = list.get_selection();
       for (n=0, len=selection.length; n<len; n++) {
           a_uids.push(selection[n]);
       }
     }
 
-    if (!this.message_list)
+    if (!list)
       r_uids = a_uids;
-    else
+    else {
+      list.focus();
       for (n=0, len=a_uids.length; n<len; n++) {
         id = a_uids[n];
-        if ((flag=='read' && this.message_list.rows[id].unread) 
-            || (flag=='unread' && !this.message_list.rows[id].unread)
-            || (flag=='delete' && !this.message_list.rows[id].deleted)
-            || (flag=='undelete' && this.message_list.rows[id].deleted)
-            || (flag=='flagged' && !this.message_list.rows[id].flagged)
-            || (flag=='unflagged' && this.message_list.rows[id].flagged))
+        if ((flag=='read' && list.rows[id].unread) 
+            || (flag=='unread' && !list.rows[id].unread)
+            || (flag=='delete' && !list.rows[id].deleted)
+            || (flag=='undelete' && list.rows[id].deleted)
+            || (flag=='flagged' && !list.rows[id].flagged)
+            || (flag=='unflagged' && list.rows[id].flagged))
         {
           r_uids.push(id);
         }
       }
+    }
 
     // nothing to do
     if (!r_uids.length && !this.select_all_mode)
@@ -2989,7 +2975,7 @@
       this.set_caret_pos(input_message, this.env.top_posting ? 0 : $(input_message).val().length);
       // add signature according to selected identity
       // if we have HTML editor, signature is added in callback
-      if (input_from.prop('type') == 'select-one' && $("input[name='_draft_saveid']").val() == '') {
+      if (input_from.prop('type') == 'select-one') {
         this.change_identity(input_from[0]);
       }
     }
@@ -3142,7 +3128,7 @@
       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);
     }
@@ -3241,7 +3227,7 @@
   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;
@@ -3250,20 +3236,11 @@
   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();
@@ -3293,8 +3270,7 @@
       input_message = $("[name='_message']"),
       message = input_message.val(),
       is_html = ($("input[name='_is_html']").val() == '1'),
-      sig = this.env.identity,
-      sig_separator = this.env.sig_above && (this.env.compose_mode == 'reply' || this.env.compose_mode == 'forward') ? '---' : '-- ';
+      sig = this.env.identity;
 
     // enable manual signature insert
     if (this.env.signatures && this.env.signatures[id]) {
@@ -3307,12 +3283,8 @@
     if (!is_html) {
       // remove the 'old' signature
       if (show_sig && sig && this.env.signatures && this.env.signatures[sig]) {
-
-        sig = this.env.signatures[sig].is_html ? this.env.signatures[sig].plain_text : this.env.signatures[sig].text;
+        sig = this.env.signatures[sig].text;
         sig = sig.replace(/\r\n/g, '\n');
-
-        if (!sig.match(/^--[ -]\n/m))
-          sig = sig_separator + '\n' + sig;
 
         p = this.env.sig_above ? message.indexOf(sig) : message.lastIndexOf(sig);
         if (p >= 0)
@@ -3320,11 +3292,8 @@
       }
       // add the new signature string
       if (show_sig && this.env.signatures && this.env.signatures[id]) {
-        sig = this.env.signatures[id]['is_html'] ? this.env.signatures[id]['plain_text'] : this.env.signatures[id]['text'];
+        sig = this.env.signatures[id].text;
         sig = sig.replace(/\r\n/g, '\n');
-
-        if (!sig.match(/^--[ -]\n/m))
-          sig = sig_separator + '\n' + sig;
 
         if (this.env.sig_above) {
           if (p >= 0) { // in place of removed signature
@@ -3389,21 +3358,8 @@
         }
       }
 
-      if (this.env.signatures[id]) {
-        if (this.env.signatures[id].is_html) {
-          sig = this.env.signatures[id].text;
-          if (!this.env.signatures[id].plain_text.match(/^--[ -]\r?\n/m))
-            sig = sig_separator + '<br />' + sig;
-        }
-        else {
-          sig = this.env.signatures[id].text;
-          if (!sig.match(/^--[ -]\r?\n/m))
-            sig = sig_separator + '\n' + sig;
-          sig = '<pre>' + sig + '</pre>';
-        }
-
-        sigElem.innerHTML = sig;
-      }
+      if (this.env.signatures[id])
+        sigElem.innerHTML = this.env.signatures[id].html;
     }
 
     this.env.identity = id;
@@ -3526,7 +3482,7 @@
 
   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);
   };
 
@@ -3547,7 +3503,7 @@
   this.add_contact = function(value)
   {
     if (value)
-      this.http_post('addcontact', '_address='+value);
+      this.http_post('addcontact', {_address: value});
 
     return true;
   };
@@ -3626,7 +3582,7 @@
   {
     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);
   };
 
 
@@ -3684,11 +3640,11 @@
       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;
@@ -3803,7 +3759,7 @@
       return;
 
     // ...new search value contains old one and previous search was not finished or its result was empty
-    if (old_value && old_value.length && q.indexOf(old_value) == 0 && (!ac || !ac.num) && this.env.contacts && !this.env.contacts.length)
+    if (old_value && old_value.length && q.indexOf(old_value) == 0 && (!ac || ac.num <= 0) && this.env.contacts && !this.env.contacts.length)
       return;
 
     var i, lock, source, xhr, reqid = new Date().getTime(),
@@ -3816,7 +3772,7 @@
 
     for (i=0; i<threads; i++) {
       source = this.ksearch_data.sources.shift();
-      if (threads > 1 && source === null)
+      if (threads > 1 && source === undefined)
         break;
 
       lock = this.display_message(this.get_label('searching'), 'loading');
@@ -3995,7 +3951,7 @@
       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);
 
@@ -4018,8 +3974,7 @@
 
     // 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('group-remove-selected', this.env.group && 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);
@@ -4545,10 +4500,13 @@
 
   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)
@@ -4563,8 +4521,15 @@
       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],
@@ -4588,6 +4553,14 @@
 
           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 = [];
@@ -5514,7 +5487,7 @@
       }
       // 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;
     }
 
@@ -5534,7 +5507,7 @@
     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;
   };
 
@@ -5600,6 +5573,32 @@
     this.messages = {};
   };
 
+  // open a jquery UI dialog with the given content
+  this.show_popup_dialog = function(html, title)
+  {
+    // forward call to parent window
+    if (this.is_framed()) {
+      parent.rcmail.show_popup_dialog(html, title);
+      return;
+    }
+
+    var popup = $('<div class="popup">')
+      .html(html)
+      .dialog({
+        title: title,
+        modal: true,
+        resizable: true,
+        width: 580,
+        close: function(event, ui) { $(this).remove() }
+      });
+
+      // resize and center popup
+      var win = $(window), w = win.width(), h = win.height(),
+        width = popup.width(), height = popup.height();
+      popup.dialog('option', { height: Math.min(h-40, height+50), width: Math.min(w-20, width+50) })
+        .dialog('option', 'position', ['center', 'center']);  // only works in a separate call (!?)
+  };
+
   // mark a mailbox as selected and set environment variable
   this.select_folder = function(name, prefix, encode)
   {
@@ -5646,7 +5645,7 @@
 
   // for reordering column array (Konqueror workaround)
   // and for setting some message list global variables
-  this.set_message_coltypes = function(coltypes, repl)
+  this.set_message_coltypes = function(coltypes, repl, smart_col)
   {
     var list = this.message_list,
       thead = list ? list.list.tHead : null,
@@ -5674,7 +5673,7 @@
 
       for (n=0, len=this.env.coltypes.length; n<len; n++) {
         col = this.env.coltypes[n];
-        if ((cell = thead.rows[0].cells[n]) && (col=='from' || col=='to')) {
+        if ((cell = thead.rows[0].cells[n]) && (col == 'from' || col == 'to' || col == 'fromto')) {
           cell.id = 'rcm'+col;
           // if we have links for sorting, it's a bit more complicated...
           if (cell.firstChild && cell.firstChild.tagName.toLowerCase()=='a') {
@@ -5682,7 +5681,7 @@
             cell.onclick = function(){ return rcmail.command('sort', this.__col, this); };
             cell.__col = col;
           }
-          cell.innerHTML = this.get_label(col);
+          cell.innerHTML = this.get_label(col == 'fromto' ? smart_col : col);
         }
       }
     }
@@ -5814,14 +5813,14 @@
   };
 
   // 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) {
@@ -5831,14 +5830,14 @@
   };
 
   // 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); };
   };
 
 
@@ -5960,7 +5959,7 @@
     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); }
     });
   };
 
@@ -5992,7 +5991,7 @@
     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); }
     });
   };
 
@@ -6124,15 +6123,29 @@
   };
 
   // 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;
 
     this.set_busy(false, null, lock);
     request.abort();
 
+    // don't display error message on page unload (#1488547)
+    if (this.unload)
+      return;
+
     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
@@ -6186,12 +6199,15 @@
   // 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);
   };
 
@@ -6252,7 +6268,7 @@
       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();

--
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