Add a new Quick select action to quickly select a virtual library with a few keystrokes. Activated by Ctrl+t or the Virtual library menu

src/calibre/gui2/actions/virtual_library.py

@@ -4,7 +4,7 @@
 
 from __future__ import absolute_import, division, print_function, unicode_literals
 
-from PyQt5.Qt import QToolButton
+from PyQt5.Qt import QToolButton, QAction
 
 from calibre.gui2.actions import InterfaceAction
 
@@ -24,6 +24,13 @@ class VirtualLibraryAction(InterfaceAction):
     def genesis(self):
         self.menu = m = self.qaction.menu()
         m.aboutToShow.connect(self.about_to_show_menu)
+        self.qs_action = QAction(self.gui)
+        self.gui.addAction(self.qs_action)
+        self.qs_action.triggered.connect(self.gui.choose_vl_triggerred)
+        self.gui.keyboard.register_shortcut(self.unique_name + ' - ' + 'quick-select-vl',
+            _('Quick select Virtual library'), default_keys=('Ctrl+T',),
+            action=self.qs_action, description=_('Quick select a Virtual library'),
+            group=self.action_spec[0])
 
     def about_to_show_menu(self):
         self.gui.build_virtual_library_menu(self.menu, add_tabs_action=False)

src/calibre/gui2/search_restriction_mixin.py

@@ -380,6 +380,8 @@ class SearchRestrictionMixin(object):
         self.build_virtual_library_list(a, self.remove_vl_triggered)
         m.addMenu(a)
 
+        m.addAction(_('Quick select Virtual library'), self.choose_vl_triggerred)
+
         if add_tabs_action:
             if gprefs['show_vl_tabs']:
                 m.addAction(_('Hide virtual library tabs'), self.vl_tabs.disable_bar)
@@ -492,6 +494,29 @@ class SearchRestrictionMixin(object):
             return
         self._remove_vl(name, reapply=True)
 
+    def choose_vl_triggerred(self):
+        from calibre.gui2.tweak_book.widgets import QuickOpen, Results
+        db = self.library_view.model().db
+        virt_libs = db.prefs.get('virtual_libraries', {})
+        if not virt_libs:
+            return error_dialog(self, _('No virtual libraries'), _(
+                'No Virtual libraries present, create some first'), show=True)
+        example = '<pre>{0}S{1}ome {0}B{1}ook {0}C{1}ollection</pre>'.format(
+            '<span style="%s">' % Results.EMPH, '</span>')
+        chars = '<pre style="%s">sbc</pre>' % Results.EMPH
+        help_text = _('''<p>Quickly choose a Virtual library by typing in just a few characters from the file name into the field above.
+        For example, if want to choose the VL:
+        {example}
+        Simply type in the characters:
+        {chars}
+        and press Enter.''').format(example=example, chars=chars)
+
+        d = QuickOpen(
+                sorted(virt_libs.keys(), key=sort_key), parent=self, title=_('Choose Virtual library'),
+                name='vl-open', level1=' ', help_text=help_text)
+        if d.exec_() == d.Accepted and d.selected_result:
+            self.apply_virtual_library(library=d.selected_result)
+
     def _remove_vl(self, name, reapply=True):
         db = self.library_view.model().db
         virt_libs = db.prefs.get('virtual_libraries', {})

src/calibre/gui2/tweak_book/widgets.py

@@ -24,7 +24,7 @@ from calibre.gui2 import error_dialog, choose_files, choose_save_file, info_dial
 from calibre.gui2.tweak_book import tprefs, current_container
 from calibre.gui2.widgets2 import Dialog as BaseDialog, HistoryComboBox, to_plain_text, PARAGRAPH_SEPARATOR
 from calibre.utils.icu import primary_sort_key, sort_key, primary_contains, numeric_sort_key
-from calibre.utils.matcher import get_char, Matcher
+from calibre.utils.matcher import get_char, Matcher, DEFAULT_LEVEL1, DEFAULT_LEVEL2, DEFAULT_LEVEL3
 from calibre.gui2.complete2 import EditWithComplete
 from polyglot.builtins import iteritems, unicode_type, zip, getcwd, filter as ignore_me
 
@@ -408,11 +408,12 @@ class Results(QWidget):
 
 class QuickOpen(Dialog):
 
-    def __init__(self, items, parent=None):
-        self.matcher = Matcher(items)
+    def __init__(self, items, parent=None, title=None, name='quick-open', level1=DEFAULT_LEVEL1, level2=DEFAULT_LEVEL2, level3=DEFAULT_LEVEL3, help_text=None):
+        self.matcher = Matcher(items, level1=level1, level2=level2, level3=level3)
         self.matches = ()
         self.selected_result = None
-        Dialog.__init__(self, _('Choose file to edit'), 'quick-open', parent=parent)
+        self.help_text = help_text or self.default_help_text()
+        Dialog.__init__(self, title or _('Choose file to edit'), name, parent=parent)
 
     def sizeHint(self):
         ans = Dialog.sizeHint(self)
@@ -420,6 +421,18 @@ class QuickOpen(Dialog):
         ans.setHeight(max(600, ans.height()))
         return ans
 
+    def default_help_text(self):
+        example = '<pre>{0}i{1}mages/{0}c{1}hapter1/{0}s{1}cene{0}3{1}.jpg</pre>'.format(
+            '<span style="%s">' % Results.EMPH, '</span>')
+        chars = '<pre style="%s">ics3</pre>' % Results.EMPH
+
+        return _('''<p>Quickly choose a file by typing in just a few characters from the file name into the field above.
+        For example, if want to choose the file:
+        {example}
+        Simply type in the characters:
+        {chars}
+        and press Enter.''').format(example=example, chars=chars)
+
     def setup_ui(self):
         self.l = l = QVBoxLayout(self)
         self.setLayout(l)
@@ -428,17 +441,7 @@ class QuickOpen(Dialog):
         t.textEdited.connect(self.update_matches)
         l.addWidget(t, alignment=Qt.AlignTop)
 
-        example = '<pre>{0}i{1}mages/{0}c{1}hapter1/{0}s{1}cene{0}3{1}.jpg</pre>'.format(
-            '<span style="%s">' % Results.EMPH, '</span>')
-        chars = '<pre style="%s">ics3</pre>' % Results.EMPH
-
-        self.help_label = hl = QLabel(_(
-            '''<p>Quickly choose a file by typing in just a few characters from the file name into the field above.
-        For example, if want to choose the file:
-        {example}
-        Simply type in the characters:
-        {chars}
-        and press Enter.''').format(example=example, chars=chars))
+        self.help_label = hl = QLabel(self.help_text)
         hl.setContentsMargins(50, 50, 50, 50), hl.setAlignment(Qt.AlignTop | Qt.AlignHCenter)
         l.addWidget(hl)
         self.results = Results(self)