From 6ac009886c19acae72ea8c49054f532ba9d99a62 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 8 Jul 2009 13:27:26 -0600
Subject: [PATCH] Search box now indicates successfully parsed queries

---
 src/calibre/gui2/library.py | 22 +++++++++++++++++++---
 src/calibre/gui2/main.py    | 13 +++++++++----
 2 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/src/calibre/gui2/library.py b/src/calibre/gui2/library.py
index 79ecbc082b..c1705cb420 100644
--- a/src/calibre/gui2/library.py
+++ b/src/calibre/gui2/library.py
@@ -244,12 +244,15 @@ class BooksModel(QAbstractTableModel):
         try:
             self.db.search(text)
         except ParseException:
-            self.emit(SIGNAL('parse_exception()'))
+            self.emit(SIGNAL('searched(PyQt_PyObject)'), False)
             return
         self.last_search = text
         if reset:
             self.clear_caches()
             self.reset()
+        if self.last_search:
+            self.emit(SIGNAL('searched(PyQt_PyObject)'), True)
+
 
     def sort(self, col, order, reset=True):
         if not self.db:
@@ -743,14 +746,20 @@ class BooksView(TableView):
     def set_editable(self, editable):
         self._model.set_editable(editable)
 
-    def connect_to_search_box(self, sb):
+    def connect_to_search_box(self, sb, search_done):
         QObject.connect(sb, SIGNAL('search(PyQt_PyObject, PyQt_PyObject)'),
                         self._model.search)
+        self._search_done = search_done
+        self.connect(self._model, SIGNAL('searched(PyQt_PyObject)'),
+                self.search_done)
 
     def connect_to_book_display(self, bd):
         QObject.connect(self._model, SIGNAL('new_bookdisplay_data(PyQt_PyObject)'),
                         bd)
 
+    def search_done(self, ok):
+        self._search_done(self, ok)
+
 
 class DeviceBooksView(BooksView):
 
@@ -864,7 +873,7 @@ class DeviceBooksModel(BooksModel):
             try:
                 matches = self.search_engine.parse(text)
             except ParseException:
-                self.emit(SIGNAL('parse_exception()'))
+                self.emit(SIGNAL('searched(PyQt_PyObject)'), False)
                 return
 
             self.map = []
@@ -875,6 +884,9 @@ class DeviceBooksModel(BooksModel):
         if reset:
             self.reset()
         self.last_search = text
+        if self.last_search:
+            self.emit(SIGNAL('searched(PyQt_PyObject)'), True)
+
 
     def resort(self, reset):
         self.sort(self.sorted_on[0], self.sorted_on[1], reset=reset)
@@ -1068,11 +1080,15 @@ class SearchBox(QLineEdit):
         self.setText(self.help_text)
         self.home(False)
         self.initial_state = True
+        self.setStyleSheet("background-color: white")
 
     def clear(self):
         self.clear_to_help()
         self.emit(SIGNAL('search(PyQt_PyObject, PyQt_PyObject)'), '', False)
 
+    def search_done(self, ok):
+        col = 'rgba(0,255,0,25%)' if ok else 'rgb(255,0,0,25%)'
+        self.setStyleSheet('background-color: '+col)
 
     def keyPressEvent(self, event):
         if self.initial_state:
diff --git a/src/calibre/gui2/main.py b/src/calibre/gui2/main.py
index e3aa0e6b8c..c1597c5979 100644
--- a/src/calibre/gui2/main.py
+++ b/src/calibre/gui2/main.py
@@ -394,13 +394,14 @@ class Main(MainWindow, Ui_MainWindow, DeviceGUI):
         QObject.connect(self.library_view,
                 SIGNAL('files_dropped(PyQt_PyObject)'),
                         self.files_dropped, Qt.QueuedConnection)
-        for func, target in [
-                             ('connect_to_search_box', self.search),
+        for func, args in [
+                             ('connect_to_search_box', (self.search,
+                                 self.search_done)),
                              ('connect_to_book_display',
-                                 self.status_bar.book_info.show_data),
+                                 (self.status_bar.book_info.show_data,)),
                              ]:
             for view in (self.library_view, self.memory_view, self.card_a_view, self.card_b_view):
-                getattr(view, func)(target)
+                getattr(view, func)(*args)
 
         self.memory_view.connect_dirtied_signal(self.upload_booklists)
         self.card_a_view.connect_dirtied_signal(self.upload_booklists)
@@ -631,6 +632,10 @@ class Main(MainWindow, Ui_MainWindow, DeviceGUI):
             self.match_any.setVisible(False)
             self.popularity.setVisible(False)
 
+    def search_done(self, view, ok):
+        if view is self.current_view():
+            self.search.search_done(ok)
+
     def sync_cf_to_listview(self, index, *args):
         if not hasattr(index, 'row') and \
                 self.library_view.currentIndex().row() != index: