From a32a1e6f794565f6c4cc046ae08165f5db2e229c Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Thu, 13 Mar 2014 08:30:00 +0530
Subject: [PATCH] Add an action to clear search history as well as disabling
 the popup

---
 src/calibre/gui2/tweak_book/search.py | 12 +++++++-----
 src/calibre/gui2/widgets2.py          |  5 +++++
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/src/calibre/gui2/tweak_book/search.py b/src/calibre/gui2/tweak_book/search.py
index 6988aa5912..ca29189046 100644
--- a/src/calibre/gui2/tweak_book/search.py
+++ b/src/calibre/gui2/tweak_book/search.py
@@ -27,15 +27,17 @@ class PushButton(QPushButton):
 
 class HistoryLineEdit(HistoryLineEdit2):
 
-    def __init__(self, parent):
+    def __init__(self, parent, clear_msg):
         HistoryLineEdit2.__init__(self, parent)
         self.disable_popup = tprefs['disable_completion_popup_for_search']
+        self.clear_msg = clear_msg
 
     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.addAction(self.clear_msg, self.clear_history)
+        menu.addAction((_('Enable completion based on search history') if self.disable_popup else _(
+            'Disable completion based on search history')), self.toggle_popups)
         menu.exec_(event.globalPos())
 
     def toggle_popups(self):
@@ -63,7 +65,7 @@ class SearchWidget(QWidget):
 
         self.fl = fl = QLabel(_('&Find:'))
         fl.setAlignment(Qt.AlignRight | Qt.AlignCenter)
-        self.find_text = ft = HistoryLineEdit(self)
+        self.find_text = ft = HistoryLineEdit(self, _('Clear search history'))
         ft.initialize('tweak_book_find_edit')
         ft.returnPressed.connect(lambda : self.search_triggered.emit('find'))
         fl.setBuddy(ft)
@@ -72,7 +74,7 @@ class SearchWidget(QWidget):
 
         self.rl = rl = QLabel(_('&Replace:'))
         rl.setAlignment(Qt.AlignRight | Qt.AlignCenter)
-        self.replace_text = rt = HistoryLineEdit(self)
+        self.replace_text = rt = HistoryLineEdit(self, _('Clear replace history'))
         rt.initialize('tweak_book_replace_edit')
         rl.setBuddy(rt)
         l.addWidget(rl, 1, 0)
diff --git a/src/calibre/gui2/widgets2.py b/src/calibre/gui2/widgets2.py
index c53ae2e93f..3a52d72078 100644
--- a/src/calibre/gui2/widgets2.py
+++ b/src/calibre/gui2/widgets2.py
@@ -34,3 +34,8 @@ class HistoryLineEdit2(LineEdit):
             history.set(self.store_name, self.history)
             self.update_items_cache(self.history)
 
+    def clear_history(self):
+        self.history = []
+        history.set(self.store_name, self.history)
+        self.update_items_cache(self.history)
+