Merge branch 'master' of https://github.com/cbhaley/calibre

manual/gui.rst

@@ -386,7 +386,7 @@ Two variants of equality searches are used for hierarchical items (e.g., A.B.C):
 
 *'Regular expression' searches*
 
-Regular expression searches are indicated by prefixing the search string with a tilde (~). Any `Python-compatible regular expression <https://docs.python.org/library/re.html>`__ can be used. Backslashes used to escape special characters in regular expressions must be doubled because single backslashes will be removed during query parsing. For example, to match a literal parenthesis you must enter ``\\(`` or alternatively use `super quotes` (see below). Regular expression searches are 'contains' searches unless the expression is anchored. Character variants are significant: ``~e`` doesn't match ``é``.
+Regular expression searches are indicated by prefixing the search string with a tilde (~). Any `Python-compatible regular expression <https://docs.python.org/library/re.html>`__ can be used. Backslashes used to escape special characters in regular expressions must be doubled because single backslashes will be removed during query parsing. For example, to match a literal parenthesis you must enter ``\\(`` or alternatively use `super-quotes` (see below). Regular expression searches are 'contains' searches unless the expression is anchored. Character variants are significant: ``~e`` doesn't match ``é``.
 
 *'Character variant' searches*
 

src/calibre/gui2/preferences/look_feel.py

@@ -8,6 +8,7 @@ __docformat__ = 'restructuredtext en'
 import json
 from collections import defaultdict
 from threading import Thread
+from functools import partial
 
 from qt.core import (
     QApplication, QFont, QFontInfo, QFontDialog, QColorDialog, QPainter, QDialog,
@@ -23,7 +24,7 @@ from calibre.ebooks.metadata.sources.prefs import msprefs
 from calibre.gui2.custom_column_widgets import get_field_list as em_get_field_list
 from calibre.gui2 import default_author_link, icon_resource_manager, choose_save_file, choose_files
 from calibre.gui2.dialogs.template_dialog import TemplateDialog
-from calibre.gui2.preferences import ConfigWidgetBase, test_widget, CommaSeparatedList
+from calibre.gui2.preferences import ConfigWidgetBase, test_widget
 from calibre.gui2.preferences.look_feel_ui import Ui_Form
 from calibre.gui2 import config, gprefs, qt_app, open_local_file, question_dialog, error_dialog
 from calibre.utils.localization import (available_translations,
@@ -377,24 +378,101 @@ class TBDisplayedFields(DisplayedFields):  # {{{
                                                     pref_data_override=pref_data_override)
         if use_defaults:
             hc = []
+            self.changed = True
         elif pref_data_override:
             hc = [k for k,v in pref_data_override if not v]
+            self.changed = True
         else:
             hc = tv.hidden_categories
 
         self.beginResetModel()
         self.fields = [[x, x not in hc] for x in cat_ord]
         self.endResetModel()
-        self.changed = True
 
     def is_standard_category(self, key):
         return self.gui.tags_view.model().is_standard_category(key)
 
     def commit(self):
         if self.changed:
-            self.db.new_api.set_pref('tag_browser_hidden_categories', [k for k,v in self.fields if not v])
+            self.db.prefs.set('tag_browser_hidden_categories', [k for k,v in self.fields if not v])
-            self.db.new_api.set_pref('tag_browser_category_order', [k for k,v in self.fields])
+            self.db.prefs.set('tag_browser_category_order', [k for k,v in self.fields])
-            self.gui.tags_view.model().set_hidden_categories({k for k,v in self.fields if not v})
+            self.gui.tags_view.model().reset_tag_browser_categories()
+# }}}
+
+
+class TBPartitionedFields(DisplayedFields):  # {{{
+    # The code in this class depends on the fact that the tag browser is
+    # initialized before this class is instantiated.
+
+    def __init__(self, db, parent=None, category_icons=None):
+        DisplayedFields.__init__(self, db, parent, category_icons=category_icons)
+        from calibre.gui2.ui import get_gui
+        self.gui = get_gui()
+
+    def initialize(self, use_defaults=False, pref_data_override=None):
+        tv = self.gui.tags_view
+        cats = tv.model().categories
+        ans = []
+        if use_defaults:
+            ans = [[k, True] for k in cats.keys()]
+            self.changed = True
+        elif pref_data_override:
+            po = {k:v for k,v in pref_data_override}
+            ans = [[k, po.get(k, True)] for k in cats.keys()]
+            self.changed = True
+        else:
+            # Check if setting not migrated yet
+            cats_to_partition =  self.db.prefs.get('tag_browser_dont_collapse',
+                                                   gprefs.get('tag_browser_dont_collapse'))
+            for key in cats:
+                ans.append([key, not key in cats_to_partition])
+        self.beginResetModel()
+        self.fields = ans
+        self.endResetModel()
+
+    def commit(self):
+        if self.changed:
+            # Migrate to a per-library setting
+            self.db.prefs.set('tag_browser_dont_collapse', [k for k,v in self.fields if not v])
+            self.gui.tags_view.model().reset_tag_browser_categories()
+# }}}
+
+
+class TBHierarchicalFields(DisplayedFields):  # {{{
+    # The code in this class depends on the fact that the tag browser is
+    # initialized before this class is instantiated.
+
+    cant_make_hierarical = {'authors', 'publisher', 'formats', 'news',
+                            'identifiers', 'languages', 'rating'}
+
+    def __init__(self, db, parent=None, category_icons=None):
+        DisplayedFields.__init__(self, db, parent, category_icons=category_icons)
+        from calibre.gui2.ui import get_gui
+        self.gui = get_gui()
+
+    def initialize(self, use_defaults=False, pref_data_override=None):
+        tv = self.gui.tags_view
+        cats = [k for k in tv.model().categories.keys() if k not in self.cant_make_hierarical]
+        ans = []
+        if use_defaults:
+            ans = [[k, False] for k in cats]
+            self.changed = True
+        elif pref_data_override:
+            ph = {k:v for k,v in pref_data_override}
+            ans = [[k, ph.get(k, False)] for k in cats]
+            self.changed = True
+        else:
+            hier_cats =  self.db.prefs.get('categories_using_hierarchy')
+            for key in cats:
+                ans.append([key, key in hier_cats])
+        self.beginResetModel()
+        self.fields = ans
+        self.endResetModel()
+
+    def commit(self):
+        if self.changed:
+            self.db.prefs.set('categories_using_hierarchy', [k for k,v in self.fields if v])
+            self.gui.tags_view.model().reset_tag_browser_categories()
 # }}}
 
 
@@ -547,20 +625,6 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
         r('tags_browser_collapse_at', gprefs)
         r('tags_browser_collapse_fl_at', gprefs)
 
-        choices = {k for k in db.field_metadata.all_field_keys()
-                if (db.field_metadata[k]['is_category'] and (
-                    db.field_metadata[k]['datatype'] in ['text', 'series', 'enumeration'
-                    ]) and not db.field_metadata[k]['display'].get('is_names', False)) or (
-                    db.field_metadata[k]['datatype'] in ['composite'
-                    ] and db.field_metadata[k]['display'].get('make_category', False))}
-        choices |= {'search'}
-        r('tag_browser_dont_collapse', gprefs, setting=CommaSeparatedList,
-          choices=sorted(choices, key=sort_key))
-
-        choices -= {'authors', 'publisher', 'formats', 'news', 'identifiers'}
-        r('categories_using_hierarchy', db.prefs, setting=CommaSeparatedList,
-          choices=sorted(choices, key=sort_key))
-
         fm = db.field_metadata
         choices = sorted(((fm[k]['name'], k) for k in fm.displayable_field_keys() if fm[k]['name']),
                          key=lambda x:sort_key(x[0]))
@@ -601,9 +665,12 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
                 lambda self: move_field_up(self.em_display_order, self.em_display_model))
         connect_lambda(self.em_down_button.clicked, self,
                 lambda self: move_field_down(self.em_display_order, self.em_display_model))
-        self.em_export_layout_button.clicked.connect(self.em_export_layout)
+        self.em_export_layout_button.clicked.connect(partial(self.export_layout,
-        self.em_import_layout_button.clicked.connect(self.em_import_layout)
+                                                             model=self.em_display_model))
-        self.em_reset_layout_button.clicked.connect(self.em_reset_layout)
+        self.em_import_layout_button.clicked.connect(partial(self.import_layout,
+                                                             model=self.em_display_model))
+        self.em_reset_layout_button.clicked.connect(partial(self.reset_layout,
+                                                            model=self.em_display_model))
 
         self.qv_display_model = QVDisplayedFields(self.gui.current_db,
                 self.qv_display_order)
@@ -619,12 +686,39 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
                                                   category_icons=self.gui.tags_view.model().category_custom_icons)
         self.tb_display_model.dataChanged.connect(self.changed_signal)
         self.tb_display_order.setModel(self.tb_display_model)
-        self.tb_reset_layout_button.clicked.connect(self.tb_reset_layout)
+        self.tb_reset_layout_button.clicked.connect(partial(self.reset_layout,
-        self.tb_export_layout_button.clicked.connect(self.tb_export_layout)
+                                                            model=self.tb_display_model))
-        self.tb_import_layout_button.clicked.connect(self.tb_import_layout)
+        self.tb_export_layout_button.clicked.connect(partial(self.export_layout,
+                                                             model=self.tb_display_model))
+        self.tb_import_layout_button.clicked.connect(partial(self.import_layout,
+                                                             model=self.tb_display_model))
         self.tb_up_button.clicked.connect(self.tb_up_button_clicked)
         self.tb_down_button.clicked.connect(self.tb_down_button_clicked)
 
+        self.tb_categories_to_part_model = TBPartitionedFields(self.gui.current_db,
+                                                               self.tb_cats_to_partition,
+                                                               category_icons=self.gui.tags_view.model().category_custom_icons)
+        self.tb_categories_to_part_model.dataChanged.connect(self.changed_signal)
+        self.tb_cats_to_partition.setModel(self.tb_categories_to_part_model)
+        self.tb_partition_reset_button.clicked.connect(partial(self.reset_layout,
+                                                               model=self.tb_categories_to_part_model))
+        self.tb_partition_export_layout_button.clicked.connect(partial(self.export_layout,
+                                                                       model=self.tb_categories_to_part_model))
+        self.tb_partition_import_layout_button.clicked.connect(partial(self.import_layout,
+                                                                       model=self.tb_categories_to_part_model))
+
+        self.tb_hierarchical_cats_model = TBHierarchicalFields(self.gui.current_db,
+                                                              self.tb_hierarchical_cats,
+                                                              category_icons=self.gui.tags_view.model().category_custom_icons)
+        self.tb_hierarchical_cats_model.dataChanged.connect(self.changed_signal)
+        self.tb_hierarchical_cats.setModel(self.tb_hierarchical_cats_model)
+        self.tb_hierarchy_reset_layout_button.clicked.connect(partial(self.reset_layout,
+                                                           model=self.tb_hierarchical_cats_model))
+        self.tb_hierarchy_export_layout_button.clicked.connect(partial(self.export_layout,
+                                                           model=self.tb_hierarchical_cats_model))
+        self.tb_hierarchy_import_layout_button.clicked.connect(partial(self.import_layout,
+                                                           model=self.tb_hierarchical_cats_model))
+
         self.edit_rules = EditRules(self.tabWidget)
         self.edit_rules.changed.connect(self.changed_signal)
         self.tabWidget.addTab(self.edit_rules,
@@ -695,19 +789,19 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
             self.opt_color_palette.setEnabled(enabled)
             self.opt_color_palette_label.setEnabled(enabled)
 
-    def em_export_layout(self):
+    def export_layout(self, model=None):
         filename = choose_save_file(self, 'em_import_export_field_list',
                 _('Save column list to file'),
                 filters=[(_('Column list'), ['json'])])
         if filename:
             try:
                 with open(filename, 'w') as f:
-                    json.dump(self.em_display_model.fields, f, indent=1)
+                    json.dump(model.fields, f, indent=1)
             except Exception as err:
                 error_dialog(self, _('Export field layout'),
                              _('<p>Could not write field list. Error:<br>%s')%err, show=True)
 
-    def em_import_layout(self):
+    def import_layout(self, model=None):
         filename = choose_files(self, 'em_import_export_field_list',
                 _('Load column list from file'),
                 filters=[(_('Column list'), ['json'])])
@@ -715,44 +809,14 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
             try:
                 with open(filename[0]) as f:
                     fields = json.load(f)
-                self.em_display_model.initialize(pref_data_override=fields)
+                model.initialize(pref_data_override=fields)
                 self.changed_signal.emit()
             except Exception as err:
                 error_dialog(self, _('Import layout'),
                              _('<p>Could not read field list. Error:<br>%s')%err, show=True)
 
-    def em_reset_layout(self):
+    def reset_layout(self, model=None):
-        self.em_display_model.initialize(use_defaults=True)
+        model.initialize(use_defaults=True)
-        self.changed_signal.emit()
-
-    def tb_export_layout(self):
-        filename = choose_save_file(self, 'em_import_export_field_list',
-                _('Save column list to file'),
-                filters=[(_('Column list'), ['json'])])
-        if filename:
-            try:
-                with open(filename, 'w') as f:
-                    json.dump(self.tb_display_model.fields, f, indent=1)
-            except Exception as err:
-                error_dialog(self, _('Export field layout'),
-                             _('<p>Could not write field list. Error:<br>%s')%err, show=True)
-
-    def tb_import_layout(self):
-        filename = choose_files(self, 'em_import_export_field_list',
-                _('Load column list from file'),
-                filters=[(_('Column list'), ['json'])])
-        if filename:
-            try:
-                with open(filename[0]) as f:
-                    fields = json.load(f)
-                self.tb_display_model.initialize(pref_data_override=fields)
-                self.changed_signal.emit()
-            except Exception as err:
-                error_dialog(self, _('Import layout'),
-                             _('<p>Could not read field list. Error:<br>%s')%err, show=True)
-
-    def tb_reset_layout(self):
-        self.tb_display_model.initialize(use_defaults=True)
         self.changed_signal.emit()
 
     def tb_down_button_clicked(self):
@@ -839,6 +903,8 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
         self.em_display_model.initialize()
         self.qv_display_model.initialize()
         self.tb_display_model.initialize()
+        self.tb_categories_to_part_model.initialize()
+        self.tb_hierarchical_cats_model.initialize()
         db = self.gui.current_db
         mi = []
         try:
@@ -974,6 +1040,8 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
             self.em_display_model.commit()
             self.qv_display_model.commit()
             self.tb_display_model.commit()
+            self.tb_categories_to_part_model.commit()
+            self.tb_hierarchical_cats_model.commit()
             self.edit_rules.commit(self.gui.current_db.prefs)
             self.icon_rules.commit(self.gui.current_db.prefs)
             self.grid_rules.commit(self.gui.current_db.prefs)

src/calibre/gui2/preferences/look_feel.ui

@@ -1156,17 +1156,10 @@ using the Tab key. The F2 (Edit) key will still open the template editor.</p&
           <string>Select the categories to display in the Tag browser and their order</string>
          </property>
          <layout class="QGridLayout" name="gridLayout_3">
-          <item row="1" column="0">
-           <widget class="QLabel" name="label">
-            <property name="text">
-             <string>User categories and Saved searches cannot be moved</string>
-            </property>
-           </widget>
-          </item>
           <item row="4" column="1">
            <widget class="QToolButton" name="tb_down_button">
             <property name="toolTip">
-             <string>Move down</string>
+             <string>Move down. User categories and Saved searches cannot be moved</string>
             </property>
             <property name="icon">
              <iconset resource="../../../../resources/images.qrc">
@@ -1177,7 +1170,7 @@ using the Tab key. The F2 (Edit) key will still open the template editor.&lt;/p&
           <item row="2" column="1">
            <widget class="QToolButton" name="tb_up_button">
             <property name="toolTip">
-             <string>Move up</string>
+             <string>Move up. User categories and Saved searches cannot be moved</string>
             </property>
             <property name="icon">
              <iconset resource="../../../../resources/images.qrc">
@@ -1269,6 +1262,8 @@ structure and you want to use the same column order for each one.&lt;/p&gt;</str
         </widget>
        </item>
        <item>
+        <layout class="QGridLayout" name="gridLayout_10">
+         <item row="0" column="0">
           <layout class="QFormLayout" name="formLayout">
            <property name="fieldGrowthPolicy">
             <enum>QFormLayout::ExpandingFieldsGrow</enum>
@@ -1295,49 +1290,6 @@ if you never want subcategories</string>
             </widget>
            </item>
            <item row="1" column="0">
-          <widget class="QLabel" name="label_10">
-           <property name="text">
-            <string>Co&amp;llapse when more items than:</string>
-           </property>
-           <property name="buddy">
-            <cstring>opt_tags_browser_collapse_at</cstring>
-           </property>
-          </widget>
-         </item>
-         <item row="1" column="1">
-          <widget class="QSpinBox" name="opt_tags_browser_collapse_at">
-           <property name="toolTip">
-            <string>If a Tag browser category has more than this number of items, it is divided
-up into subcategories. If the partition method is set to disable, this value is ignored.</string>
-           </property>
-           <property name="maximum">
-            <number>10000</number>
-           </property>
-          </widget>
-         </item>
-         <item row="2" column="0">
-          <widget class="QLabel" name="label_10">
-           <property name="text">
-            <string>Combine letters &amp;when fewer items than:</string>
-           </property>
-           <property name="buddy">
-            <cstring>opt_tags_browser_collapse_fl_at</cstring>
-           </property>
-          </widget>
-         </item>
-         <item row="2" column="1">
-          <widget class="QSpinBox" name="opt_tags_browser_collapse_fl_at">
-           <property name="toolTip">
-            <string>If collapsing by first letter, combine adjacent letters together if
-there are fewer items under a letter than specified here. If the partition method is
-not set to first letter, this value is ignored. Set to zero to disable.</string>
-           </property>
-           <property name="maximum">
-            <number>10000</number>
-           </property>
-          </widget>
-         </item>
-         <item row="3" column="0">
             <widget class="QLabel" name="label">
              <property name="text">
               <string>Spacing between &amp;items:</string>
@@ -1347,7 +1299,7 @@ not set to first letter, this value is ignored. Set to zero to disable.</string>
              </property>
             </widget>
            </item>
-         <item row="3" column="1">
+           <item row="1" column="1">
             <widget class="QDoubleSpinBox" name="opt_tag_browser_item_padding">
              <property name="toolTip">
               <string>The spacing between consecutive items in the Tag browser. In units of (ex) which is the approximate height of the letter 'x' in the currently used font. </string>
@@ -1369,66 +1321,220 @@ not set to first letter, this value is ignored. Set to zero to disable.</string>
              </property>
             </widget>
            </item>
-         <item row="4" column="0">
+          </layout>
-          <widget class="QLabel" name="label_8111">
+         </item>
+         <item row="0" column="1">
+          <layout class="QFormLayout" name="formLayout">
+           <item row="0" column="0">
+            <widget class="QLabel" name="label_10">
              <property name="text">
-            <string>Categories &amp;not to partition:</string>
+              <string>Combine letters &amp;when fewer items than:</string>
              </property>
              <property name="buddy">
-            <cstring>opt_tag_browser_dont_collapse</cstring>
+              <cstring>opt_tags_browser_collapse_fl_at</cstring>
              </property>
             </widget>
            </item>
-         <item row="4" column="1">
+           <item row="0" column="1">
-          <widget class="EditWithComplete" name="opt_tag_browser_dont_collapse">
+            <widget class="QSpinBox" name="opt_tags_browser_collapse_fl_at">
-           <property name="sizePolicy">
-            <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
-             <horstretch>0</horstretch>
-             <verstretch>0</verstretch>
-            </sizepolicy>
-           </property>
              <property name="toolTip">
-            <string>A comma-separated list of categories that are not to
+              <string>If collapsing by first letter, combine adjacent letters together if
-be partitioned even if the number of items is larger than
+there are fewer items under a letter than specified here. If the partition method is
-the value shown above. This option can be used to
+not set to first letter, this value is ignored. Set to zero to disable.</string>
-avoid collapsing hierarchical categories that have only
+             </property>
-a few top-level elements.</string>
+             <property name="maximum">
+              <number>10000</number>
              </property>
             </widget>
            </item>
-         <item row="5" column="0">
+           <item row="1" column="0">
-          <widget class="QLabel" name="label_81">
+            <widget class="QLabel" name="label_10">
              <property name="text">
-            <string>C&amp;ategories with hierarchical items:</string>
+              <string>Co&amp;llapse when more items than:</string>
              </property>
              <property name="buddy">
-            <cstring>opt_categories_using_hierarchy</cstring>
+              <cstring>opt_tags_browser_collapse_at</cstring>
              </property>
             </widget>
            </item>
-         <item row="5" column="1">
+           <item row="1" column="1">
-          <widget class="EditWithComplete" name="opt_categories_using_hierarchy">
+            <widget class="QSpinBox" name="opt_tags_browser_collapse_at">
-           <property name="sizePolicy">
-            <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
-             <horstretch>0</horstretch>
-             <verstretch>0</verstretch>
-            </sizepolicy>
-           </property>
              <property name="toolTip">
-            <string>A comma-separated list of categories in which items containing
+              <string>If a Tag browser category has more than this number of items, it is divided
-periods are displayed in the Tag browser trees. For example, if
+up into subcategories. If the partition method is set to disable, this value is ignored.</string>
-this box contains 'tags' then tags of the form 'Mystery.English'
+             </property>
-and 'Mystery.Thriller' will be displayed with English and Thriller
+             <property name="maximum">
-both under 'Mystery'. If 'tags' is not in this box,
+              <number>10000</number>
-then the tags will be displayed each on their own line.</string>
              </property>
             </widget>
            </item>
           </layout>
          </item>
+         <item row="1" column="0">
+          <widget class="QLabel">
+           <property name="text">
+            <string>Select categories to &amp;partition:</string>
+           </property>
+           <property name="buddy">
+            <cstring>tb_cats_to_partition</cstring>
+           </property>
+           <property name="toolTip">
+            <string>&lt;p&gt;Check the box for categories that are to
+be partitioned using the criteria above. Uncheck the box if you don't want to
+partition a category even if the number of items is larger than
+the value shown above. This option can be used to
+avoid collapsing hierarchical categories that have only
+a few top-level elements.&lt;/p&gt;</string>
+           </property>
+          </widget>
+         </item>
+         <item row="2" column="0">
+          <widget class="QListView" name="tb_cats_to_partition">
+           <property name="minimumSize">
+            <size>
+             <width>0</width>
+             <height>200</height>
+            </size>
+           </property>
+           <property name="alternatingRowColors">
+            <bool>true</bool>
+           </property>
+          </widget>
+         </item>
+         <item row="3" column="0">
+          <layout class="QHBoxLayout" name="horizontalLayout_41">
            <item>
-        <layout class="QGridLayout" name="gridLayout_10">
+            <widget class="QPushButton" name="tb_partition_reset_button">
-         <item row="0" column="0">
+             <property name="toolTip">
+              <string>&lt;p&gt;Click this button to reset the list to its default order.&lt;/p&gt;</string>
+             </property>
+             <property name="text">
+              <string>Reset list</string>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QPushButton" name="tb_partition_import_layout_button">
+             <property name="toolTip">
+              <string>&lt;p&gt;Click this button to set the list to one
+previously exported. This could be useful if you have several libraries with
+similar structure and you want to use the same for each one.&lt;/p&gt;</string>
+             </property>
+             <property name="text">
+              <string>Import list</string>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QPushButton" name="tb_partition_export_layout_button">
+             <property name="toolTip">
+              <string>&lt;p&gt;Click this button to write the current display
+settings to a file. This could be useful if you have several libraries with similar
+structure and you want to use the same for each one.&lt;/p&gt;</string>
+             </property>
+             <property name="text">
+              <string>Export list</string>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <spacer name="horizontalSpacer">
+             <property name="orientation">
+              <enum>Qt::Horizontal</enum>
+             </property>
+             <property name="sizeHint" stdset="0">
+              <size>
+               <width>40</width>
+               <height>20</height>
+              </size>
+             </property>
+            </spacer>
+           </item>
+          </layout>
+         </item>
+         <item row="1" column="1">
+          <widget class="QLabel">
+           <property name="text">
+            <string>Select categories with &amp;hierarchical items:</string>
+           </property>
+           <property name="buddy">
+            <cstring>tb_hierarchical_cats</cstring>
+           </property>
+           <property name="toolTip">
+            <string>&lt;p&gt;Check the box for an item if it is to be displayed as a
+hierarchical tree in the Tag browser. For example, if you check
+'tags' then tags of the form 'Mystery.English'
+and 'Mystery.Thriller' will be displayed with English and Thriller
+both under 'Mystery'. If 'tags' is not checked
+then the tags will be displayed each on their own line.&lt;/p&gt;</string>
+           </property>
+          </widget>
+         </item>
+         <item row="2" column="1">
+          <widget class="QListView" name="tb_hierarchical_cats">
+           <property name="minimumSize">
+            <size>
+             <width>0</width>
+             <height>200</height>
+            </size>
+           </property>
+           <property name="alternatingRowColors">
+            <bool>true</bool>
+           </property>
+          </widget>
+         </item>
+         <item row="3" column="1">
+          <layout class="QHBoxLayout" name="horizontalLayout_4">
+           <item>
+            <widget class="QPushButton" name="tb_hierarchy_reset_layout_button">
+             <property name="toolTip">
+              <string>&lt;p&gt;Click this button to reset the list to its default order.&lt;/p&gt;</string>
+             </property>
+             <property name="text">
+              <string>Reset list</string>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QPushButton" name="tb_hierarchy_import_layout_button">
+             <property name="toolTip">
+              <string>&lt;p&gt;Click this button to set the list to one
+previously exported. This could be useful if you have several libraries with
+similar structure and you want to use the same for each one.&lt;/p&gt;</string>
+             </property>
+             <property name="text">
+              <string>Import list</string>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QPushButton" name="tb_hierarchy_export_layout_button">
+             <property name="toolTip">
+              <string>&lt;p&gt;Click this button to write the current display
+settings to a file. This could be useful if you have several libraries with similar
+structure and you want to use the same for each one.&lt;/p&gt;</string>
+             </property>
+             <property name="text">
+              <string>Export list</string>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <spacer name="horizontalSpacer">
+             <property name="orientation">
+              <enum>Qt::Horizontal</enum>
+             </property>
+             <property name="sizeHint" stdset="0">
+              <size>
+               <width>40</width>
+               <height>20</height>
+              </size>
+             </property>
+            </spacer>
+           </item>
+          </layout>
+         </item>
+         <item row="5" column="0">
           <widget class="QCheckBox" name="opt_show_avg_rating">
            <property name="text">
             <string>Show &amp;average ratings</string>
@@ -1438,14 +1544,14 @@ then the tags will be displayed each on their own line.</string>
            </property>
           </widget>
          </item>
-         <item row="0" column="1">
+         <item row="5" column="1">
           <widget class="QCheckBox" name="opt_tag_browser_show_tooltips">
            <property name="text">
             <string>Show &amp;tooltips</string>
            </property>
           </widget>
          </item>
-         <item row="1" column="0">
+         <item row="6" column="0">
           <widget class="QCheckBox" name="opt_tag_browser_show_counts">
            <property name="toolTip">
             <string>Show counts for items in the Tag browser. Such as the number of books
@@ -1457,14 +1563,14 @@ see the counts by hovering your mouse over any item.</string>
            </property>
           </widget>
          </item>
-         <item row="1" column="1">
+         <item row="6" column="1">
           <widget class="QCheckBox" name="opt_tag_browser_old_look">
            <property name="text">
             <string>Use &amp;alternating row colors</string>
            </property>
           </widget>
          </item>
-         <item row="2" column="0">
+         <item row="7" column="0">
           <widget class="QCheckBox" name="opt_tag_browser_hide_empty_categories">
            <property name="toolTip">
             <string>When checked, calibre will automatically hide any category
@@ -1477,7 +1583,7 @@ see the counts by hovering your mouse over any item.</string>
            </property>
           </widget>
          </item>
-         <item row="2" column="1">
+         <item row="7" column="1">
           <widget class="QCheckBox" name="opt_tag_browser_always_autocollapse">
            <property name="toolTip">
             <string>When checked, Find in the Tag browser will show all items
@@ -1489,7 +1595,7 @@ see the counts by hovering your mouse over any item.</string>
            </property>
           </widget>
          </item>
-         <item row="3" column="0" colspan="2">
+         <item row="8" column="0" colspan="2">
           <layout class="QVBoxLayout" name="verticalLayout">
            <item>
             <widget class="QCheckBox" name="opt_tag_browser_allow_keyboard_focus">

src/calibre/gui2/tag_browser/model.py

@@ -402,9 +402,14 @@ class TagsModel(QAbstractItemModel):  # {{{
         self._run_rebuild()
         self.endResetModel()
 
-    def set_hidden_categories(self, cats):
+    def reset_tag_browser_categories(self):
         self.beginResetModel()
-        self.hidden_categories = cats
+        hidden_cats = self.db.new_api.pref('tag_browser_hidden_categories', {})
+        self.hidden_categories = set()
+        # strip out any non-existent field keys
+        for cat in hidden_cats:
+            if cat in self.db.field_metadata:
+                self.hidden_categories.add(cat)
         self._run_rebuild()
         self.endResetModel()
 
@@ -541,7 +546,9 @@ class TagsModel(QAbstractItemModel):  # {{{
             is_gst = category.is_gst
             if key not in data:
                 return
-            if key in self.prefs['tag_browser_dont_collapse']:
+            # Use old pref if new one doesn't exist
+            if key in self.db.prefs.get('tag_browser_dont_collapse',
+                                       self.prefs['tag_browser_dont_collapse']):
                 collapse_model = 'disable'
             cat_len = len(data[key])
             if cat_len <= 0: