Fix regressions caused by change of author field to combobox

src/calibre/gui2/convert/metadata.ui

@@ -20,6 +20,36 @@
       <string>Book Cover</string>
      </property>
      <layout class="QGridLayout" name="_2">
+      <item row="0" column="0">
+       <layout class="QHBoxLayout" name="_3">
+        <item>
+         <widget class="ImageView" name="cover">
+          <property name="text">
+           <string/>
+          </property>
+          <property name="pixmap">
+           <pixmap resource="../images.qrc">:/images/book.svg</pixmap>
+          </property>
+          <property name="scaledContents">
+           <bool>true</bool>
+          </property>
+          <property name="alignment">
+           <set>Qt::AlignCenter</set>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </item>
+      <item row="2" column="0">
+       <widget class="QCheckBox" name="opt_prefer_metadata_cover">
+        <property name="text">
+         <string>Use cover from &amp;source file</string>
+        </property>
+        <property name="checked">
+         <bool>true</bool>
+        </property>
+       </widget>
+      </item>
       <item row="1" column="0">
        <layout class="QVBoxLayout" name="_4">
         <property name="spacing">
@@ -71,36 +101,6 @@
         </item>
        </layout>
       </item>
-      <item row="2" column="0">
-       <widget class="QCheckBox" name="opt_prefer_metadata_cover">
-        <property name="text">
-         <string>Use cover from &amp;source file</string>
-        </property>
-        <property name="checked">
-         <bool>true</bool>
-        </property>
-       </widget>
-      </item>
-      <item row="0" column="0">
-       <layout class="QHBoxLayout" name="_3">
-        <item>
-         <widget class="ImageView" name="cover">
-          <property name="text">
-           <string/>
-          </property>
-          <property name="pixmap">
-           <pixmap resource="../images.qrc">:/images/book.svg</pixmap>
-          </property>
-          <property name="scaledContents">
-           <bool>true</bool>
-          </property>
-          <property name="alignment">
-           <set>Qt::AlignCenter</set>
-          </property>
-         </widget>
-        </item>
-       </layout>
-      </item>
      </layout>
      <zorder>opt_prefer_metadata_cover</zorder>
      <zorder></zorder>
@@ -329,6 +329,19 @@
    <header>widgets.h</header>
   </customwidget>
  </customwidgets>
+ <tabstops>
+  <tabstop>title</tabstop>
+  <tabstop>author</tabstop>
+  <tabstop>author_sort</tabstop>
+  <tabstop>publisher</tabstop>
+  <tabstop>tags</tabstop>
+  <tabstop>series</tabstop>
+  <tabstop>series_index</tabstop>
+  <tabstop>comment</tabstop>
+  <tabstop>cover_path</tabstop>
+  <tabstop>cover_button</tabstop>
+  <tabstop>opt_prefer_metadata_cover</tabstop>
+ </tabstops>
  <resources>
   <include location="../images.qrc"/>
   <include location="../images.qrc"/>

src/calibre/gui2/dialogs/metadata_single.ui

@@ -43,8 +43,8 @@
        <rect>
         <x>0</x>
         <y>0</y>
-        <width>869</width>
+        <width>879</width>
-        <height>696</height>
+        <height>710</height>
        </rect>
       </property>
       <layout class="QVBoxLayout" name="verticalLayout_5">
@@ -121,6 +121,9 @@
                    <property name="alignment">
                     <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
                    </property>
+                   <property name="buddy">
+                    <cstring>authors</cstring>
+                   </property>
                   </widget>
                  </item>
                  <item row="2" column="0">
@@ -661,26 +664,28 @@
  <tabstops>
   <tabstop>title</tabstop>
   <tabstop>swap_button</tabstop>
+  <tabstop>authors</tabstop>
   <tabstop>author_sort</tabstop>
   <tabstop>auto_author_sort</tabstop>
   <tabstop>rating</tabstop>
   <tabstop>publisher</tabstop>
   <tabstop>tags</tabstop>
-  <tabstop>series</tabstop>
   <tabstop>tag_editor_button</tabstop>
+  <tabstop>series</tabstop>
   <tabstop>remove_series_button</tabstop>
+  <tabstop>series_index</tabstop>
   <tabstop>isbn</tabstop>
   <tabstop>pubdate</tabstop>
   <tabstop>comments</tabstop>
   <tabstop>fetch_metadata_button</tabstop>
-  <tabstop>fetch_cover_button</tabstop>
   <tabstop>formats</tabstop>
   <tabstop>add_format_button</tabstop>
-  <tabstop>remove_format_button</tabstop>
   <tabstop>button_set_cover</tabstop>
+  <tabstop>remove_format_button</tabstop>
   <tabstop>cover_path</tabstop>
   <tabstop>cover_button</tabstop>
   <tabstop>reset_cover</tabstop>
+  <tabstop>fetch_cover_button</tabstop>
   <tabstop>scrollArea</tabstop>
   <tabstop>button_box</tabstop>
  </tabstops>

src/calibre/gui2/widgets.py

@@ -490,13 +490,13 @@ class LineEditECM(object):
 
 
 class EnLineEdit(LineEditECM, QLineEdit):
-    
+
     '''
     Enhanced QLineEdit.
-    
+
     Includes an extended content menu.
     '''
-    
+
     pass
 
 
@@ -593,6 +593,13 @@ class EnComboBox(QComboBox):
     def text(self):
         return qstring_to_unicode(self.currentText())
 
+    def setText(self, text):
+        idx = self.findText(text, Qt.MatchFixedString)
+        if idx == -1:
+            self.insertItem(0, text)
+            idx = 0
+        self.setCurrentIndex(idx)
+
 class PythonHighlighter(QSyntaxHighlighter):
 
     Rules = []