From e01e7985176867c0fe7dae2853c44aff53a56db7 Mon Sep 17 00:00:00 2001
From: alecpl <alec@alec.pl>
Date: Tue, 22 Nov 2011 08:32:44 -0500
Subject: [PATCH] - Fix action when toggling prefer_html option state

---
 program/js/app.js |  331 +++++++++++++++++++++++++-----------------------------
 1 files changed, 155 insertions(+), 176 deletions(-)

diff --git a/program/js/app.js b/program/js/app.js
index 3ddd558..1be2009 100644
--- a/program/js/app.js
+++ b/program/js/app.js
@@ -20,7 +20,7 @@
 
 function rcube_webmail()
 {
-  this.env = {};
+  this.env = { recipients_separator:',', recipients_delimiter:', ' };
   this.labels = {};
   this.buttons = {};
   this.buttons_sel = {};
@@ -128,7 +128,7 @@
   // initialize webmail client
   this.init = function()
   {
-    var p = this;
+    var n, p = this;
     this.task = this.env.task;
 
     // check browser
@@ -138,11 +138,11 @@
     }
 
     // find all registered gui containers
-    for (var n in this.gui_containers)
+    for (n in this.gui_containers)
       this.gui_containers[n] = $('#'+this.gui_containers[n]);
 
     // find all registered gui objects
-    for (var n in this.gui_objects)
+    for (n in this.gui_objects)
       this.gui_objects[n] = rcube_find_object(this.gui_objects[n]);
 
     // init registered buttons
@@ -155,7 +155,7 @@
     }
 
     // enable general commands
-    this.enable_command('logout', 'mail', 'addressbook', 'settings', 'save-pref', 'compose', 'undo', true);
+    this.enable_command('logout', 'mail', 'addressbook', 'settings', 'save-pref', 'compose', 'undo', 'about', true);
 
     if (this.env.permaurl)
       this.enable_command('permaurl', true);
@@ -207,7 +207,7 @@
           'moveto', 'copy', 'delete', 'open', 'mark', 'edit', 'viewsource', 'download',
           'print', 'load-attachment', 'load-headers', 'forward-attachment'];
 
-        if (this.env.action=='show' || this.env.action=='preview') {
+        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);
 
@@ -380,8 +380,10 @@
           $('#rcmloginpwd').focus();
 
         // detect client timezone
-        var tz = new Date().getTimezoneOffset() / -60;
-        var stdtz = new Date().getStdTimezoneOffset() / -60;
+        var dt = new Date(),
+          tz = dt.getTimezoneOffset() / -60,
+          stdtz = dt.getStdTimezoneOffset() / -60;
+
         $('#rcmlogintz').val(stdtz);
         $('#rcmlogindst').val(tz > stdtz ? 1 : 0);
 
@@ -442,7 +444,7 @@
   // execute a specific command on the web client
   this.command = function(command, props, obj)
   {
-    var ret;
+    var ret, uid, cid, url, flag;
 
     if (obj && obj.blur)
       obj.blur();
@@ -460,7 +462,7 @@
     }
 
     // check input before leaving compose step
-    if (this.task=='mail' && this.env.action=='compose' && $.inArray(command, this.env.compose_commands)<0) {
+    if (this.task == 'mail' && this.env.action == 'compose' && $.inArray(command, this.env.compose_commands)<0) {
       if (this.cmp_hash != this.compose_field_hash() && !confirm(this.get_label('notsentwarning')))
         return false;
     }
@@ -504,6 +506,10 @@
         this.switch_task(command);
         break;
 
+      case 'about':
+        location.href = '?_task=settings&_action=about';
+        break;
+
       case 'permaurl':
         if (obj && obj.href && obj.target)
           return true;
@@ -517,7 +523,6 @@
         return false;
 
       case 'open':
-        var uid;
         if (uid = this.get_single_uid()) {
           obj.href = '?_task='+this.env.task+'&_action=show&_mbox='+urlencode(this.env.mailbox)+'&_uid='+uid;
           return true;
@@ -586,7 +591,7 @@
       // common commands used in multiple tasks
       case 'show':
         if (this.task == 'mail') {
-          var uid = this.get_single_uid();
+          uid = this.get_single_uid();
           if (uid && (!this.env.uid || uid != this.env.uid)) {
             if (this.env.mailbox == this.env.drafts_mailbox)
               this.goto_url('compose', '_draft_uid='+uid+'&_mbox='+urlencode(this.env.mailbox), true);
@@ -595,7 +600,7 @@
           }
         }
         else if (this.task == 'addressbook') {
-          var cid = props ? props : this.get_single_cid();
+          cid = props ? props : this.get_single_cid();
           if (cid && !(this.env.action == 'show' && cid == this.env.cid))
             this.load_contact(cid, 'show');
         }
@@ -611,13 +616,12 @@
         break;
 
       case 'edit':
-        var cid;
         if (this.task=='addressbook' && (cid = this.get_single_cid()))
           this.load_contact(cid, 'edit');
         else if (this.task=='settings' && props)
           this.load_identity(props, 'edit-identity');
         else if (this.task=='mail' && (cid = this.get_single_uid())) {
-          var url = (this.env.mailbox == this.env.drafts_mailbox) ? '_draft_uid=' : '_uid=';
+          url = (this.env.mailbox == this.env.drafts_mailbox) ? '_draft_uid=' : '_uid=';
           this.goto_url('compose', url+cid+'&_mbox='+urlencode(this.env.mailbox), true);
         }
         break;
@@ -695,7 +699,7 @@
         if (props && !props._row)
           break;
 
-        var uid, flag = 'read';
+        flag = 'read';
 
         if (props._row.uid) {
           uid = props._row.uid;
@@ -715,7 +719,7 @@
         if (props && !props._row)
           break;
 
-        var uid, flag = 'flagged';
+        flag = 'flagged';
 
         if (props._row.uid) {
           uid = props._row.uid;
@@ -811,17 +815,11 @@
         break;
 
       case 'compose':
-        var url = this.url('mail/compose');
+        url = this.url('mail/compose');
 
         if (this.task == 'mail') {
           url += '&_mbox='+urlencode(this.env.mailbox);
-
-          if (this.env.mailbox == this.env.drafts_mailbox) {
-            var uid;
-            if (uid = this.get_single_uid())
-              url += '&_draft_uid='+uid;
-          }
-          else if (props)
+          if (props)
              url += '&_to='+urlencode(props);
         }
         // modify url if we're in addressbook
@@ -845,7 +843,9 @@
           }
 
           if (a_cids.length)
-            this.http_post('mailto', {_cid: a_cids.join(','), _source: this.env.source}, true);
+            this.http_post('mailto', { _cid: a_cids.join(','), _source: this.env.source}, true);
+          else if (this.env.group)
+            this.http_post('mailto', { _gid: this.env.group, _source: this.env.source}, true);
 
           break;
         }
@@ -925,9 +925,8 @@
       case 'reply-all':
       case 'reply-list':
       case 'reply':
-        var uid;
         if (uid = this.get_single_uid()) {
-          var url = '_reply_uid='+uid+'&_mbox='+urlencode(this.env.mailbox);
+          url = '_reply_uid='+uid+'&_mbox='+urlencode(this.env.mailbox);
           if (command == 'reply-all')
             // do reply-list, when list is detected and popup menu wasn't used 
             url += '&_all=' + (!props && this.commands['reply-list'] ? 'list' : 'all');
@@ -940,7 +939,6 @@
 
       case 'forward-attachment':
       case 'forward':
-        var uid, url;
         if (uid = this.get_single_uid()) {
           url = '_forward_uid='+uid+'&_mbox='+urlencode(this.env.mailbox);
           if (command == 'forward-attachment' || (!props && this.env.forward_attachment))
@@ -950,7 +948,6 @@
         break;
 
       case 'print':
-        var uid;
         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) {
@@ -962,7 +959,6 @@
         break;
 
       case 'viewsource':
-        var uid;
         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)
@@ -971,7 +967,6 @@
         break;
 
       case 'download':
-        var uid;
         if (uid = this.get_single_uid())
           this.goto_url('viewsource', '&_uid='+uid+'&_mbox='+urlencode(this.env.mailbox)+'&_save=1');
         break;
@@ -1068,10 +1063,10 @@
   // set command(s) enabled or disabled
   this.enable_command = function()
   {
-    var args = Array.prototype.slice.call(arguments),
+    var i, n, args = Array.prototype.slice.call(arguments),
       enable = args.pop(), cmd;
 
-    for (var n=0; n<args.length; n++) {
+    for (n=0; n<args.length; n++) {
       cmd = args[n];
       // argument of type array
       if (typeof cmd === 'string') {
@@ -1080,7 +1075,7 @@
       }
       // push array elements into commands array
       else {
-        for (var i in cmd)
+        for (i in cmd)
           args.push(cmd[i]);
       }
     }
@@ -1253,13 +1248,14 @@
       this.initialBodyScrollTop = bw.ie ? 0 : window.pageYOffset;
       this.initialListScrollTop = this.gui_objects.folderlist.parentNode.scrollTop;
 
-      var li, pos, list, height;
-      list = $(this.gui_objects.folderlist);
-      pos = list.offset();
+      var k, li, height,
+        list = $(this.gui_objects.folderlist);
+        pos = list.offset();
+
       this.env.folderlist_coords = { x1:pos.left, y1:pos.top, x2:pos.left + list.width(), y2:pos.top + list.height() };
 
       this.env.folder_coords = [];
-      for (var k in model) {
+      for (k in model) {
         if (li = this.get_folder_li(k)) {
           // only visible folders
           if (height = li.firstChild.offsetHeight) {
@@ -1295,19 +1291,18 @@
   this.drag_move = function(e)
   {
     if (this.gui_objects.folderlist && this.env.folder_coords) {
-      // offsets to compensate for scrolling while dragging a message
-      var boffset = bw.ie ? -document.documentElement.scrollTop : this.initialBodyScrollTop;
-      var moffset = this.initialListScrollTop-this.gui_objects.folderlist.parentNode.scrollTop;
-      var toffset = -moffset-boffset;
-      var li, div, pos, mouse, check, oldclass,
-        layerclass = 'draglayernormal';
+      var k, li, div, check, oldclass,
+        layerclass = 'draglayernormal',
+        mouse = rcube_event.get_mouse_pos(e),
+        pos = this.env.folderlist_coords,
+        // offsets to compensate for scrolling while dragging a message
+        boffset = bw.ie ? -document.documentElement.scrollTop : this.initialBodyScrollTop,
+        moffset = this.initialListScrollTop-this.gui_objects.folderlist.parentNode.scrollTop;
 
       if (this.contact_list && this.contact_list.draglayer)
         oldclass = this.contact_list.draglayer.attr('class');
 
-      mouse = rcube_event.get_mouse_pos(e);
-      pos = this.env.folderlist_coords;
-      mouse.y += toffset;
+      mouse.y += -moffset-boffset;
 
       // if mouse pointer is outside of folderlist
       if (mouse.x < pos.x1 || mouse.x >= pos.x2 || mouse.y < pos.y1 || mouse.y >= pos.y2) {
@@ -1322,10 +1317,10 @@
       }
 
       // over the folders
-      for (var k in this.env.folder_coords) {
+      for (k in this.env.folder_coords) {
         pos = this.env.folder_coords[k];
         if (mouse.x >= pos.x1 && mouse.x < pos.x2 && mouse.y >= pos.y1 && mouse.y < pos.y2){
-         if ((check = this.check_droptarget(k))) {
+          if ((check = this.check_droptarget(k))) {
             li = this.get_folder_li(k);
             div = $(li.getElementsByTagName('div')[0]);
 
@@ -1336,9 +1331,9 @@
 
               this.folder_auto_expand = k;
               this.folder_auto_timer = window.setTimeout(function() {
-                  rcmail.command('collapse-folder', rcmail.folder_auto_expand);
-                  rcmail.drag_start(null);
-                }, 1000);
+                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);
               this.folder_auto_timer = null;
@@ -1676,23 +1671,18 @@
       flags: flags.extra_flags
     });
 
-    var c, html, tree = expando = '',
+    var c, n, col, html, tree = '', expando = '',
       list = this.message_list,
       rows = list.rows,
-      tbody = this.gui_objects.messagelist.tBodies[0],
-      rowcount = tbody.rows.length,
-      even = rowcount%2,
       message = this.env.messages[uid],
       css_class = 'message'
-        + (even ? ' even' : ' odd')
         + (!flags.seen ? ' unread' : '')
         + (flags.deleted ? ' deleted' : '')
         + (flags.flagged ? ' flagged' : '')
         + (flags.unread_children && flags.seen && !this.env.autoexpand_threads ? ' unroot' : '')
         + (message.selected ? ' selected' : ''),
       // for performance use DOM instead of jQuery here
-      row = document.createElement('tr'),
-      col = document.createElement('td');
+      row = document.createElement('tr');
 
     row.id = 'rcmrow'+uid;
     row.className = css_class;
@@ -1719,9 +1709,10 @@
 
     // threads
     if (this.env.threading) {
-      // This assumes that div width is hardcoded to 15px,
-      var width = message.depth * 15;
       if (message.depth) {
+        // This assumes that div width is hardcoded to 15px,
+        tree += '<span id="rcmtab' + uid + '" class="branch" style="width:' + (message.depth * 15) + 'px;">&nbsp;&nbsp;</span>';
+
         if ((rows[message.parent_uid] && rows[message.parent_uid].expanded === false)
           || ((this.env.autoexpand_threads == 0 || this.env.autoexpand_threads == 2) &&
             (!rows[message.parent_uid] || !rows[message.parent_uid].expanded))
@@ -1736,13 +1727,9 @@
         if (message.expanded === undefined && (this.env.autoexpand_threads == 1 || (this.env.autoexpand_threads == 2 && message.unread_children))) {
           message.expanded = true;
         }
-      }
 
-      if (width)
-        tree += '<span id="rcmtab' + uid + '" class="branch" style="width:' + width + 'px;">&nbsp;&nbsp;</span>';
-
-      if (message.has_children && !message.depth)
         expando = '<div id="rcmexpando' + uid + '" class="' + (message.expanded ? 'expanded' : 'collapsed') + '">&nbsp;&nbsp;</div>';
+      }
     }
 
     tree += '<span id="msgicn'+uid+'" class="'+css_class+'">&nbsp;</span>';
@@ -1756,7 +1743,7 @@
     }
 
     // add each submitted col
-    for (var n in this.env.coltypes) {
+    for (n in this.env.coltypes) {
       c = this.env.coltypes[n];
       col = document.createElement('td');
       col.className = String(c).toLowerCase();
@@ -1960,18 +1947,13 @@
   // list messages of a specific mailbox using filter
   this.filter_mailbox = function(filter)
   {
-    var search, lock = this.set_busy(true, 'searching');
-
-    if (this.gui_objects.qsearchbox)
-      search = this.gui_objects.qsearchbox.value;
+    var lock = this.set_busy(true, 'searching');
 
     this.clear_message_list();
 
     // reset vars
     this.env.current_page = 1;
-    this.http_request('search', '_filter='+filter
-        + (search ? '&_q='+urlencode(search) : '')
-        + (this.env.mailbox ? '&_mbox='+urlencode(this.env.mailbox) : ''), lock);
+    this.http_request('search', this.search_params(false, filter), lock);
   };
 
   // list messages of a specific mailbox
@@ -2937,6 +2919,8 @@
 
   this.init_address_input_events = function(obj, props)
   {
+    this.env.recipients_delimiter = this.env.recipients_separator + ' ';
+
     obj[bw.ie || bw.safari || bw.chrome ? 'keydown' : 'keypress'](function(e) { return ref.ksearch_keydown(e, this, props); })
       .attr('autocomplete', 'off');
   };
@@ -3364,16 +3348,8 @@
 
   this.remove_from_attachment_list = function(name)
   {
-    if (this.env.attachments[name])
-      delete this.env.attachments[name];
-
-    if (!this.gui_objects.attachmentlist)
-      return false;
-
-    var list = this.gui_objects.attachmentlist.getElementsByTagName("li");
-    for (i=0; i<list.length; i++)
-      if (list[i].id == name)
-        this.gui_objects.attachmentlist.removeChild(list[i]);
+    delete this.env.attachments[name];
+    $('#'+name).remove();
   };
 
   this.remove_attachment = function(name)
@@ -3426,38 +3402,56 @@
   this.qsearch = function(value)
   {
     if (value != '') {
-      var n, r, addurl = '', mods_arr = [],
-        mods = this.env.search_mods,
-        mbox = this.env.mailbox,
-        lock = this.set_busy(true, 'searching');
+      var n, lock = this.set_busy(true, 'searching');
 
-      if (this.message_list) {
+      if (this.message_list)
         this.clear_message_list();
-        if (mods)
-          mods = mods[mbox] ? mods[mbox] : mods['*'];
-      } else if (this.contact_list) {
+      else if (this.contact_list)
         this.list_contacts_clear();
-      }
+
+      // 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);
+
+      this.env.qsearch = {lock: lock, request: r};
+    }
+  };
+
+  // build URL params for search
+  this.search_params = function(search, filter)
+  {
+    var n, url = [], mods_arr = [],
+      mods = this.env.search_mods,
+      mbox = this.env.mailbox;
+
+    if (!filter && this.gui_objects.search_filter)
+      filter = this.gui_objects.search_filter.value;
+
+    if (!search && this.gui_objects.qsearchbox)
+      search = this.gui_objects.qsearchbox.value;
+
+    if (filter)
+      url.push('_filter=' + urlencode(filter));
+
+    if (search) {
+      url.push('_q='+urlencode(search));
+
+      if (mods && this.message_list)
+        mods = mods[mbox] ? mods[mbox] : mods['*'];
 
       if (mods) {
         for (n in mods)
           mods_arr.push(n);
-        addurl += '&_headers='+mods_arr.join(',');
+        url.push('_headers='+mods_arr.join(','));
       }
-
-      if (this.gui_objects.search_filter)
-        addurl += '&_filter=' + this.gui_objects.search_filter.value;
-
-      // reset vars
-      this.env.current_page = 1;
-      r = this.http_request('search', '_q='+urlencode(value)
-        + (mbox ? '&_mbox='+urlencode(mbox) : '')
-        + (this.env.source ? '&_source='+urlencode(this.env.source) : '')
-        + (this.env.group ? '&_gid='+urlencode(this.env.group) : '')
-        + (addurl ? addurl : ''), lock);
-
-      this.env.qsearch = {lock: lock, request: r};
     }
+
+    if (mbox)
+      url.push('_mbox='+urlencode(mbox));
+
+    return url.join('&');
   };
 
   // reset quick-search form
@@ -3583,13 +3577,13 @@
 
     // insert all members of a group
     if (typeof this.env.contacts[id] === 'object' && this.env.contacts[id].id) {
-      insert += this.env.contacts[id].name + ', ';
+      insert += this.env.contacts[id].name + this.env.recipients_delimiter;
       this.group2expand = $.extend({}, this.env.contacts[id]);
       this.group2expand.input = this.ksearch_input;
       this.http_request('mail/group-expand', '_source='+urlencode(this.env.contacts[id].source)+'&_gid='+urlencode(this.env.contacts[id].id), false);
     }
     else if (typeof this.env.contacts[id] === 'string') {
-      insert = this.env.contacts[id] + ', ';
+      insert = this.env.contacts[id] + this.env.recipients_delimiter;
       trigger = true;
     }
 
@@ -3626,7 +3620,7 @@
 
     // get string from current cursor pos to last comma
     var cpos = this.get_caret_pos(this.ksearch_input),
-      p = inp_value.lastIndexOf(',', cpos-1),
+      p = inp_value.lastIndexOf(this.env.recipients_separator, cpos-1),
       q = inp_value.substring(p+1, cpos),
       min = this.env.autocomplete_min_length,
       ac = this.ksearch_data;
@@ -3692,7 +3686,7 @@
       return;
 
     // display search results
-    var ul, li, text, init,
+    var i, len, ul, li, text, init,
       value = this.ksearch_value,
       data = this.ksearch_data,
       maxlen = this.env.autocomplete_max ? this.env.autocomplete_max : 15;
@@ -3723,8 +3717,8 @@
     }
 
     // add each result line to list
-    if (results && results.length) {
-      for (i=0; i < results.length && maxlen > 0; i++) {
+    if (results && (len = results.length)) {
+      for (i=0; i < len && maxlen > 0; i++) {
         text = typeof results[i] === 'object' ? results[i].name : results[i];
         li = document.createElement('LI');
         li.innerHTML = text.replace(new RegExp('('+RegExp.escape(value)+')', 'ig'), '##$1%%').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/##([^%]+)%%/g, '<b>$1</b>');
@@ -3745,7 +3739,7 @@
       }
     }
 
-    if (results && results.length)
+    if (len)
       this.env.contacts = this.env.contacts.concat(results);
 
     // run next parallel search
@@ -3869,7 +3863,7 @@
       }
     }
 
-    this.enable_command('compose', 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);
 
@@ -3955,7 +3949,8 @@
   {
     this.contact_list.clear(true);
     this.show_contentframe(false);
-    this.enable_command('delete', 'compose', false);
+    this.enable_command('delete', false);
+    this.enable_command('compose', this.env.group ? true : false);
   };
 
   // load contact record
@@ -4027,10 +4022,10 @@
 
   this.delete_contacts = function()
   {
-    // exit if no mailbox specified or if selection is empty
     var selection = this.contact_list.get_selection(),
       undelete = this.env.address_sources[this.env.source].undelete;
 
+    // exit if no mailbox specified or if selection is empty
     if (!(selection.length || this.env.cid) || (!undelete && !confirm(this.get_label('deletecontactconfirm'))))
       return;
 
@@ -4100,31 +4095,29 @@
   // add row to contacts list
   this.add_contact_row = function(cid, cols, select)
   {
-    if (!this.gui_objects.contactslist || !this.gui_objects.contactslist.tBodies[0])
+    if (!this.gui_objects.contactslist)
       return false;
 
-    var tbody = this.gui_objects.contactslist.tBodies[0],
-      rowcount = tbody.rows.length,
-      even = rowcount%2,
+    var c, list = this.contact_list,
       row = document.createElement('tr');
 
     row.id = 'rcmrow'+String(cid).replace(this.identifier_expr, '_');
-    row.className = 'contact '+(even ? 'even' : 'odd');
+    row.className = 'contact';
 
-    if (this.contact_list.in_selection(cid))
+    if (list.in_selection(cid))
       row.className += ' selected';
 
     // add each submitted col
-    for (var c in cols) {
+    for (c in cols) {
       col = document.createElement('td');
       col.className = String(c).toLowerCase();
       col.innerHTML = cols[c];
       row.appendChild(col);
     }
 
-    this.contact_list.insert_row(row);
+    list.insert_row(row);
 
-    this.enable_command('export', (this.contact_list.rowcount > 0));
+    this.enable_command('export', list.rowcount > 0);
   };
 
   this.init_contact_form = function()
@@ -4379,7 +4372,7 @@
 
     elem.focus(function(){ ref.focus_textfield(this); })
       .blur(function(){ ref.blur_textfield(this); })
-      .each(function(){ this._placeholder = this.title = ref.env.coltypes[col].label; ref.blur_textfield(this); });
+      .each(function(){ this._placeholder = this.title = (ref.env.coltypes[col].label || ''); ref.blur_textfield(this); });
   };
 
   this.insert_edit_field = function(col, section, menu)
@@ -4416,7 +4409,7 @@
             .appendTo(cell);
 
           this.init_edit_field(col, input);
-          
+
           if (colprop.type == 'date' && $.datepicker)
             input.datepicker();
         }
@@ -5154,12 +5147,10 @@
   // set button to a specific state
   this.set_button = function(command, state)
   {
-    var button, obj, a_buttons = this.buttons[command];
+    var n, button, obj, a_buttons = this.buttons[command],
+      len = a_buttons ? a_buttons.length : 0;
 
-    if (!a_buttons || !a_buttons.length)
-      return false;
-
-    for (var n=0; n<a_buttons.length; n++) {
+    for (n=0; n<len; n++) {
       button = a_buttons[n];
       obj = document.getElementById(button.id);
 
@@ -5194,15 +5185,14 @@
   // display a specific alttext
   this.set_alttext = function(command, label)
   {
-    if (!this.buttons[command] || !this.buttons[command].length)
-      return;
+    var n, button, obj, link, a_buttons = this.buttons[command],
+      len = a_buttons ? a_buttons.length : 0;
 
-    var button, obj, link;
-    for (var n=0; n<this.buttons[command].length; n++) {
-      button = this.buttons[command][n];
+    for (n=0; n<len; n++) {
+      button = a_buttons[n];
       obj = document.getElementById(button.id);
 
-      if (button.type=='image' && obj) {
+      if (button.type == 'image' && obj) {
         obj.setAttribute('alt', this.get_label(label));
         if ((link = obj.parentNode) && link.tagName.toLowerCase() == 'a')
           link.setAttribute('title', this.get_label(label));
@@ -5215,20 +5205,18 @@
   // mouse over button
   this.button_over = function(command, id)
   {
-    var button, elm, a_buttons = this.buttons[command];
+    var n, button, obj, a_buttons = this.buttons[command],
+      len = a_buttons ? a_buttons.length : 0;
 
-    if (!a_buttons || !a_buttons.length)
-      return false;
-
-    for (var n=0; n<a_buttons.length; n++) {
+    for (n=0; n<len; n++) {
       button = a_buttons[n];
       if (button.id == id && button.status == 'act') {
-        elm = document.getElementById(button.id);
-        if (elm && button.over) {
+        obj = document.getElementById(button.id);
+        if (obj && button.over) {
           if (button.type == 'image')
-            elm.src = button.over;
+            obj.src = button.over;
           else
-            elm.className = button.over;
+            obj.className = button.over;
         }
       }
     }
@@ -5237,20 +5225,18 @@
   // mouse down on button
   this.button_sel = function(command, id)
   {
-    var button, elm, a_buttons = this.buttons[command];
+    var n, button, obj, a_buttons = this.buttons[command],
+      len = a_buttons ? a_buttons.length : 0;
 
-    if (!a_buttons || !a_buttons.length)
-      return;
-
-    for (var n=0; n<a_buttons.length; n++) {
+    for (n=0; n<len; n++) {
       button = a_buttons[n];
       if (button.id == id && button.status == 'act') {
-        elm = document.getElementById(button.id);
-        if (elm && button.sel) {
+        obj = document.getElementById(button.id);
+        if (obj && button.sel) {
           if (button.type == 'image')
-            elm.src = button.sel;
+            obj.src = button.sel;
           else
-            elm.className = button.sel;
+            obj.className = button.sel;
         }
         this.buttons_sel[id] = command;
       }
@@ -5260,25 +5246,22 @@
   // mouse out of button
   this.button_out = function(command, id)
   {
-    var button, elm, a_buttons = this.buttons[command];
+    var n, button, obj, a_buttons = this.buttons[command],
+      len = a_buttons ? a_buttons.length : 0;
 
-    if (!a_buttons || !a_buttons.length)
-      return;
-
-    for (var n=0; n<a_buttons.length; n++) {
+    for (n=0; n<len; n++) {
       button = a_buttons[n];
       if (button.id == id && button.status == 'act') {
-        elm = document.getElementById(button.id);
-        if (elm && button.act) {
+        obj = document.getElementById(button.id);
+        if (obj && button.act) {
           if (button.type == 'image')
-            elm.src = button.act;
+            obj.src = button.act;
           else
-            elm.className = button.act;
+            obj.className = button.act;
         }
       }
     }
   };
-
 
   this.focus_textfield = function(elem)
   {
@@ -5604,16 +5587,12 @@
 
   this.toggle_prefer_html = function(checkbox)
   {
-    var elem;
-    if (elem = document.getElementById('rcmfd_addrbook_show_images'))
-      elem.disabled = !checkbox.checked;
+    $('#rcmfd_show_images').prop('disabled', !checkbox.checked).val(0);
   };
 
   this.toggle_preview_pane = function(checkbox)
   {
-    var elem;
-    if (elem = document.getElementById('rcmfd_preview_pane_mark_read'))
-      elem.disabled = !checkbox.checked;
+    $('#rcmfd_preview_pane_mark_read').prop('disabled', !checkbox.checked);
   };
 
   // display fetched raw headers
@@ -5729,14 +5708,14 @@
 
     $.ajax({ type: 'POST', url: url, data: htmlText, contentType: 'application/octet-stream',
       error: function(o, status, err) { rcmail.http_error(o, status, err, lock); },
-      success: function(data) { rcmail.set_busy(false, null, lock); $(document.getElementById(id)).val(data); rcmail.log(data); }
+      success: function(data) { rcmail.set_busy(false, null, lock); $('#'+id).val(data); rcmail.log(data); }
     });
   };
 
   this.plain2html = function(plainText, id)
   {
     var lock = this.set_busy(true, 'converting');
-    $(document.getElementById(id)).val('<pre>'+plainText+'</pre>');
+    $('#'+id).val(plainText ? '<pre>'+plainText+'</pre>' : '');
     this.set_busy(false, null, lock);
   };
 

--
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