Add metadata editor selector to custom columns preferences dialog

src/calibre/gui2/metadata/single.py

@@ -521,7 +521,7 @@ class MetadataSingleDialog(MetadataSingleDialogBase): # {{{
 
 # }}}
 
-class MetadataSingleDialogAlt(MetadataSingleDialogBase): # {{{
+class MetadataSingleDialogAlt1(MetadataSingleDialogBase): # {{{
 
     cc_two_column = False
     one_line_comments_toolbar = True
@@ -654,10 +654,14 @@ class MetadataSingleDialogAlt(MetadataSingleDialogBase): # {{{
 
 # }}}
 
+editors = {'default': MetadataSingleDialog, 'alt1': MetadataSingleDialogAlt1}
 
 def edit_metadata(db, row_list, current_row, parent=None, view_slot=None,
         set_current_callback=None):
-    d = MetadataSingleDialog(db, parent)
+    cls = db.prefs.get('edit_metadata_single_layout', '')
+    if cls not in editors:
+        cls = 'default'
+    d = editors[cls](db, parent)
     d.start(row_list, current_row, view_slot=view_slot,
             set_current_callback=set_current_callback)
     return d.changed, d.rows_to_refresh

src/calibre/gui2/preferences/columns.py

@@ -13,6 +13,7 @@ from calibre.gui2.preferences import ConfigWidgetBase, test_widget
 from calibre.gui2.preferences.columns_ui import Ui_Form
 from calibre.gui2.preferences.create_custom_column import CreateCustomColumn
 from calibre.gui2 import error_dialog, question_dialog, ALL_COLUMNS
+from calibre.utils.config import test_eight_code
 
 class ConfigWidget(ConfigWidgetBase, Ui_Form):
 
@@ -33,6 +34,14 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
             signal = getattr(self.opt_columns, 'item'+signal)
             signal.connect(self.columns_changed)
 
+        if test_eight_code:
+            r = self.register
+            choices = [(_('Default'), 'default'), (_('Compact Metadata'), 'alt1')]
+            r('edit_metadata_single_layout', db.prefs, choices=choices)
+            r('bools_are_tristate', db.prefs)
+        else:
+            self.items_in_v_eight.setVisible(False)
+
     def initialize(self):
         ConfigWidgetBase.initialize(self)
         self.init_columns()

src/calibre/gui2/preferences/columns.ui

@@ -197,6 +197,67 @@
      </property>
     </widget>
    </item>
+   <item row="1" column="2">
+    <layout class="QVBoxLayout">
+     <item>
+      <widget class="QGroupBox" name="items_in_v_eight">
+       <property name="title">
+        <string>Related Options</string>
+       </property>
+       <layout class="QGridLayout" name="gridLayout">
+        <item row="0" column="0">
+         <widget class="QLabel">
+          <property name="text">
+           <string>Edit metadata layout:</string>
+          </property>
+          <property name="buddy">
+           <cstring>opt_edit_metadata_single_layout</cstring>
+          </property>
+         </widget>
+        </item>
+        <item row="0" column="1">
+         <widget class="QComboBox" name="opt_edit_metadata_single_layout">
+          <property name="toolTip">
+           <string>Choose varying layouts in the Edit Metadata Single dialog.</string>
+          </property>
+         </widget>
+        </item>
+        <item row="1" column="0">
+         <widget class="QLabel">
+          <property name="text">
+           <string>Boolean columns are tristate:</string>
+          </property>
+          <property name="buddy">
+           <cstring>opt_bools_are_tristate</cstring>
+          </property>
+         </widget>
+        </item>
+        <item row="1" column="1">
+        <widget class="QCheckBox" name="opt_bools_are_tristate">
+          <property name="toolTip">
+           <string>If checked, boolean columns values can be Yes, No, and Unknown.
+If not checked, the values can be Yes and No.</string>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </widget>
+     </item>
+     <item>
+      <spacer name="verticalSpacer_5">
+       <property name="orientation">
+        <enum>Qt::Vertical</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>20</width>
+         <height>40</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+    </layout>
+   </item>
   </layout>
  </widget>
  <resources>

src/calibre/library/database2.py

@@ -213,6 +213,8 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
         defs = self.prefs.defaults
         defs['gui_restriction'] = defs['cs_restriction'] = ''
         defs['categories_using_hierarchy'] = []
+        defs['edit_metadata_single_layout'] = 'default'
+        defs['bools_are_tristate'] = tweaks['bool_custom_columns_are_tristate']
 
         # Migrate saved search and user categories to db preference scheme
         def migrate_preference(key, default):