Display "No Search Results" if the search did not match any song/bible verse.

bzr-revno: 1527
Fixes: https://launchpad.net/bugs/739759

openlp/core/lib/__init__.py

@@ -223,6 +223,28 @@ def resize_image(image, width, height, background=QtCore.Qt.black):
     painter.drawImage((width - realw) / 2, (height - realh) / 2, preview)
     return new_image
 
+def check_search_result(treeWidget, search_results):
+    """
+    Checks if the given ``search_results`` is empty and adds a
+    "No Search Results" item to the given ``treeWidget``.
+
+    ``treeWidget``
+        The ``QTreeWidget`` where the "No Search Results" item should be added
+        to, if the ``search_results`` is empty.
+
+    ``search_results``
+        This can either be a list or a dict.
+    """
+    if search_results or treeWidget.count():
+        return
+    message = translate('OpenLP.MediaManagerItem', 'No Search Results')
+    item = QtGui.QListWidgetItem(message)
+    item.setFlags(QtCore.Qt.NoItemFlags)
+    font = QtGui.QFont()
+    font.setItalic(True)
+    item.setFont(font)
+    treeWidget.addItem(item)
+
 def check_item_selected(list_widget, message):
     """
     Check if a list item is selected so an action may be performed on it

openlp/plugins/bibles/lib/mediaitem.py

@@ -29,7 +29,7 @@ import logging
 from PyQt4 import QtCore, QtGui
 
 from openlp.core.lib import MediaManagerItem, Receiver, ItemCapabilities, \
-    translate
+    translate, check_search_result
 from openlp.core.lib.searchedit import SearchEdit
 from openlp.core.lib.ui import UiStrings, add_widget_completer, \
     media_item_combo_box, critical_error_message_box, find_and_set_in_combo_box
@@ -61,6 +61,7 @@ class BibleMediaItem(MediaManagerItem):
         self.quickPreviewAllowed = True
         self.search_results = {}
         self.second_search_results = {}
+        check_search_result(self.listView, self.search_results)
         QtCore.QObject.connect(Receiver.get_receiver(),
             QtCore.SIGNAL(u'bibles_load_list'), self.reloadBibles)
 
@@ -522,8 +523,9 @@ class BibleMediaItem(MediaManagerItem):
             self.__checkSecondBible(bible, second_bible)
         elif self.search_results:
             self.displayResults(bible, second_bible)
-        Receiver.send_message(u'cursor_normal')
         self.advancedSearchButton.setEnabled(True)
+        check_search_result(self.listView, self.search_results)
+        Receiver.send_message(u'cursor_normal')
         Receiver.send_message(u'openlp_process_events')
 
     def onQuickSearchButton(self):
@@ -563,6 +565,7 @@ class BibleMediaItem(MediaManagerItem):
         elif self.search_results:
             self.displayResults(bible, second_bible)
         self.quickSearchButton.setEnabled(True)
+        check_search_result(self.listView, self.search_results)
         Receiver.send_message(u'cursor_normal')
         Receiver.send_message(u'openlp_process_events')
 

openlp/plugins/songs/forms/songexportform.py

@@ -329,7 +329,7 @@ class SongExportForm(OpenLPWizard):
             self.availableListWidget, unicode(text))
         ]
         for item in self._findListWidgetItems(self.availableListWidget):
-            item.setHidden(False if item in search_result else True)
+            item.setHidden(item not in search_result)
 
     def onUncheckButtonClicked(self):
         """
@@ -360,4 +360,5 @@ class SongExportForm(OpenLPWizard):
             SettingsManager.get_last_dir(self.plugin.settingsSection, 1),
             options=QtGui.QFileDialog.ShowDirsOnly))
         SettingsManager.set_last_dir(self.plugin.settingsSection, path, 1)
-        self.directoryLineEdit.setText(path)
+        self.directoryLineEdit.setText(path)
+

openlp/plugins/songs/lib/mediaitem.py

@@ -32,7 +32,7 @@ from PyQt4 import QtCore, QtGui
 from sqlalchemy.sql import or_
 
 from openlp.core.lib import MediaManagerItem, Receiver, ItemCapabilities, \
-    translate, check_item_selected, PluginStatus
+    translate, check_item_selected, PluginStatus, check_search_result
 from openlp.core.lib.searchedit import SearchEdit
 from openlp.core.lib.ui import UiStrings
 from openlp.plugins.songs.forms import EditSongForm, SongMaintenanceForm, \
@@ -199,6 +199,7 @@ class SongMediaItem(MediaManagerItem):
             search_results = self.parent.manager.get_all_objects(Song,
                 Song.theme_name == search_keywords)
             self.displayResultsSong(search_results)
+        check_search_result(self.listView, search_results)
 
     def onSongListLoad(self):
         """