Fix bug when aborting dragging with ESC key didn't stop the move action (#6623)

+ small code improvements
+ focus the list on drag start to make sure it's focused state is up-to-date
  which is needed for proper keypress handling (e.g. ESC key on drag action)

CHANGELOG

@@ -66,6 +66,7 @@ CHANGELOG Roundcube Webmail
 - Fix so ANY record is not used for email domain validation, use A, MX, CNAME, AAAA instead (#6581)
 - Fix so mime_content_type check in Installer uses files that should always be available (i.e. from program/resources) (#6599)
 - Fix missing CSRF token on a link to download too-big message part (#6621)
+- Fix bug when aborting dragging with ESC key didn't stop the move action (#6623)
 
 RELEASE 1.4-beta
 ----------------

program/js/app.js

@@ -1695,6 +1695,7 @@ function rcube_webmail()
     if (menu) {
       $(menu).hide();
     }
+
     this.command(action, this.env.drag_target);
     this.env.drag_target = null;
   };
@@ -1724,7 +1725,8 @@ function rcube_webmail()
     else if (list = this.contact_list)
       model = this.env.contactfolders;
 
-    if (this.drag_active && model && this.env.last_folder_target) {
+    // Note: we accept only mouse events to ignore dragging aborts with ESC key (#6623)
+    if (this.drag_active && model && this.env.last_folder_target && !rcube_event.is_keyboard(e)) {
       var target = model[this.env.last_folder_target];
       list.draglayer.hide();
 

program/js/list.js

@@ -642,6 +642,7 @@ drag_row: function(e, id)
 
     rcube_event.add_listener({event:'mousemove', object:this, method:'drag_mouse_move'});
     rcube_event.add_listener({event:'mouseup', object:this, method:'drag_mouse_up'});
+
     if (bw.touch) {
       rcube_event.add_listener({event:'touchmove', object:this, method:'drag_mouse_move'});
       rcube_event.add_listener({event:'touchend', object:this, method:'drag_mouse_up'});
@@ -649,6 +650,7 @@ drag_row: function(e, id)
 
     // enable dragging over iframes
     this.add_dragfix();
+    this.focus();
   }
 
   return false;
@@ -1419,9 +1421,7 @@ highlight_children: function(id, status)
  */
 key_press: function(e)
 {
-  var target = e.target || {};
-
-  if (!this.focused || target.nodeName == 'INPUT' || target.nodeName == 'TEXTAREA' || target.nodeName == 'SELECT')
+  if (!this.focused || $(e.target).is('input,textarea,select'))
     return true;
 
   var keyCode = rcube_event.get_keycode(e),