Edit book: Allow disabling the completion popups for the search and replace fields. Right click on the search/replace field to enable/disable the completion popup

src/calibre/gui2/complete2.py

@@ -76,6 +76,7 @@ class Completer(QListView):  # {{{
 
     def __init__(self, completer_widget, max_visible_items=7):
         QListView.__init__(self)
+        self.disable_popup = False
         self.completer_widget = weakref.ref(completer_widget)
         self.setWindowFlags(Qt.Popup)
         self.max_visible_items = max_visible_items
@@ -132,6 +133,8 @@ class Completer(QListView):  # {{{
                 self.setCurrentIndex(index)
 
     def popup(self, select_first=True):
+        if self.disable_popup:
+            return
         p = self
         m = p.model()
         widget = self.completer_widget()
@@ -293,6 +296,13 @@ class LineEdit(QLineEdit, LineEditECM):
             self.mcompleter.model().set_items(items)
         return property(fget=fget, fset=fset)
 
+    @dynamic_property
+    def disable_popup(self):
+        def fget(self):
+            return self.mcompleter.disable_popup
+        def fset(self, val):
+            self.mcompleter.disable_popup = bool(val)
+        return property(fget=fget, fset=fset)
     # }}}
 
     def complete(self, show_all=False, select_first=True):

src/calibre/gui2/tweak_book/__init__.py

@@ -40,6 +40,7 @@ d['remove_existing_links_when_linking_sheets'] = True
 d['charmap_favorites'] = list(map(ord, '\xa0\u2002\u2003\u2009\xad' '‘’“”‹›«»‚„' '—–§¶†‡©®™' '→⇒•·°±−×÷¼½½¾' '…µ¢£€¿¡¨´¸ˆ˜' 'ÀÁÂÃÄÅÆÇÈÉÊË' 'ÌÍÎÏÐÑÒÓÔÕÖØ' 'ŒŠÙÚÛÜÝŸÞßàá' 'âãäåæçèéêëìí' 'îïðñòóôõöøœš' 'ùúûüýÿþªºαΩ∞'))  # noqa
 d['folders_for_types'] = {'style':'styles', 'image':'images', 'font':'fonts', 'audio':'audio', 'video':'video'}
 d['pretty_print_on_open'] = False
+d['disable_completion_popup_for_search'] = False
 
 del d
 

src/calibre/gui2/tweak_book/search.py

@@ -25,6 +25,23 @@ class PushButton(QPushButton):
         QPushButton.__init__(self, text, parent)
         self.clicked.connect(lambda : parent.search_triggered.emit(action))
 
+class HistoryLineEdit(HistoryLineEdit2):
+
+    def __init__(self, parent):
+        HistoryLineEdit2.__init__(self, parent)
+        self.disable_popup = tprefs['disable_completion_popup_for_search']
+
+    def contextMenuEvent(self, event):
+        menu = self.createStandardContextMenu()
+        menu.addSeparator()
+        menu.addAction((_('Show completion based on search history') if self.disable_popup else _(
+            'Hide completion based on search history')), self.toggle_popups)
+        menu.exec_(event.globalPos())
+
+    def toggle_popups(self):
+        self.disable_popup = not bool(self.disable_popup)
+        tprefs['disable_completion_popup_for_search'] = self.disable_popup
+
 class SearchWidget(QWidget):
 
     DEFAULT_STATE = {
@@ -46,7 +63,7 @@ class SearchWidget(QWidget):
 
         self.fl = fl = QLabel(_('&Find:'))
         fl.setAlignment(Qt.AlignRight | Qt.AlignCenter)
-        self.find_text = ft = HistoryLineEdit2(self)
+        self.find_text = ft = HistoryLineEdit(self)
         ft.initialize('tweak_book_find_edit')
         ft.returnPressed.connect(lambda : self.search_triggered.emit('find'))
         fl.setBuddy(ft)
@@ -55,7 +72,7 @@ class SearchWidget(QWidget):
 
         self.rl = rl = QLabel(_('&Replace:'))
         rl.setAlignment(Qt.AlignRight | Qt.AlignCenter)
-        self.replace_text = rt = HistoryLineEdit2(self)
+        self.replace_text = rt = HistoryLineEdit(self)
         rt.initialize('tweak_book_replace_edit')
         rl.setBuddy(rt)
         l.addWidget(rl, 1, 0)