0.9.21+ - KG revisions for dnd support

manual/conversion.rst

@@ -672,6 +672,7 @@ Some limitations of PDF input are:
     * Links and Tables of Contents are not supported
     * PDFs that use embedded non-unicode fonts to represent non-English characters will result in garbled output for those characters
     * Some PDFs are made up of photographs of the page with OCRed text behind them. In such cases |app| uses the OCRed text, which can be very different from what you see when you view the PDF file
+    * PDFs that are used to display complex text, like right to left languages and math typesetting will not convert correctly
 
 To re-iterate **PDF is a really, really bad** format to use as input. If you absolutely must use PDF, then be prepared for an
 output ranging anywhere from decent to unusable, depending on the input PDF.

recipes/tvn24.recipe

@@ -30,11 +30,6 @@ class tvn24(BasicNewsRecipe):
     feeds          = [(u'Najnowsze', u'http://www.tvn24.pl/najnowsze.xml'), ]
                 #(u'Polska', u'www.tvn24.pl/polska.xml'), (u'\u015awiat', u'http://www.tvn24.pl/swiat.xml'), (u'Sport', u'http://www.tvn24.pl/sport.xml'), (u'Biznes', u'http://www.tvn24.pl/biznes.xml'), (u'Meteo', u'http://www.tvn24.pl/meteo.xml'), (u'Micha\u0142ki', u'http://www.tvn24.pl/michalki.xml'), (u'Kultura', u'http://www.tvn24.pl/kultura.xml')]
 
-    def preprocess_html(self, soup):
-        for item in soup.findAll(style=True):
-            del item['style']
-        return soup
-
     def preprocess_html(self, soup):
         for alink in soup.findAll('a'):
             if alink.string is not None:

src/calibre/gui2/actions/__init__.py

@@ -101,9 +101,9 @@ class InterfaceAction(QObject):
     #: on calibre as a whole
     action_type = 'global'
 
-    #: If True, the action may inspect the event at accept_enter_event() and
-    #: accept_drag_move_event(), returning True or False if it wants to handle the event.
-    #: drop_event() will be called in the subclass from calibre.gui2.bars
+    #: If True, then this InterfaceAction will have the opportunity to interact
+    #: with drag and drop events. See the methods, :meth:`accept_enter_event`,
+    #: :meth`:accept_drag_move_event`, :meth:`drop_event` for details.
     accepts_drops = False
 
     def __init__(self, parent, site_customization):
@@ -113,14 +113,26 @@ class InterfaceAction(QObject):
         self.site_customization = site_customization
         self.interface_action_base_plugin = None
 
-    def accept_enter_event(self, mime_data):
+    def accept_enter_event(self, event, mime_data):
+        ''' This method should return True iff this interface action is capable
+        of handling the drag event. Do not call accept/ignore on the event,
+        that will be taken care of by the calibre UI.'''
         return False
 
-    def accept_drag_move_event(self, mime_data):
+    def accept_drag_move_event(self, event, mime_data):
+        ''' This method should return True iff this interface action is capable
+        of handling the drag event. Do not call accept/ignore on the event,
+        that will be taken care of by the calibre UI.'''
         return False
 
-    def drop_event(self, event):
-        pass
+    def drop_event(self, event, mime_data):
+        ''' This method should perform some useful action and return True
+        iff this interface action is capable of handling the drop event. Do not
+        call accept/ignore on the event, that will be taken care of by the
+        calibre UI. You should not perform blocking/long operations in this
+        function. Instead emit a signal or use QTimer.singleShot and return
+        quickly. See the builtin actions for examples.'''
+        return False
 
     def do_genesis(self):
         self.Dispatcher = partial(Dispatcher, parent=self)
@@ -145,7 +157,6 @@ class InterfaceAction(QObject):
         else:
             action = QAction(text, self.gui)
         if attr == 'qaction':
-            action.associated_interface_action = self
             mt = (action.text() if self.action_menu_clone_qaction is True else
                     unicode(self.action_menu_clone_qaction))
             self.menuless_qaction = ma = QAction(action.icon(), mt, self.gui)

src/calibre/gui2/actions/catalog.py

@@ -18,7 +18,8 @@ from calibre import sanitize_file_name_unicode
 class GenerateCatalogAction(InterfaceAction):
 
     name = 'Generate Catalog'
-    action_spec = (_('Create catalog'), 'catalog.png', 'Catalog builder', ())
+    action_spec = (_('Create catalog'), 'catalog.png',
+                   _('Create a catalog of the books in your calibre library in different formats'), ())
     dont_add_to = frozenset(['context-menu-device'])
 
     def genesis(self):

src/calibre/gui2/actions/convert.py

@@ -8,7 +8,7 @@ __docformat__ = 'restructuredtext en'
 import os
 from functools import partial
 
-from PyQt4.Qt import QModelIndex
+from PyQt4.Qt import QModelIndex, QTimer
 
 from calibre.gui2 import error_dialog, Dispatcher
 from calibre.gui2.tools import convert_single_ebook, convert_bulk_ebook
@@ -19,11 +19,36 @@ from calibre.customize.ui import plugin_for_input_format
 class ConvertAction(InterfaceAction):
 
     name = 'Convert Books'
-    action_spec = (_('Convert books'), 'convert.png', None, _('C'))
+    action_spec = (_('Convert books'), 'convert.png', _('Convert books between different ebook formats'), _('C'))
     dont_add_to = frozenset(['context-menu-device'])
     action_type = 'current'
     action_add_menu = True
 
+    accepts_drops = True
+
+    def accept_enter_event(self, event, mime_data):
+        if mime_data.hasFormat("application/calibre+from_library"):
+            return True
+        return False
+
+    def accept_drag_move_event(self, event, mime_data):
+        if mime_data.hasFormat("application/calibre+from_library"):
+            return True
+        return False
+
+    def drop_event(self, event, mime_data):
+        mime = 'application/calibre+from_library'
+        if mime_data.hasFormat(mime):
+            self.dropped_ids = tuple(map(int, str(mime_data.data(mime)).split()))
+            QTimer.singleShot(1, self.do_drop)
+            return True
+        return False
+
+    def do_drop(self):
+        book_ids = self.dropped_ids
+        del self.dropped_ids
+        self.do_convert(book_ids)
+
     def genesis(self):
         m = self.convert_menu = self.qaction.menu()
         cm = partial(self.create_menu_action, self.convert_menu)
@@ -112,6 +137,9 @@ class ConvertAction(InterfaceAction):
     def convert_ebook(self, checked, bulk=None):
         book_ids = self.get_books_for_conversion()
         if book_ids is None: return
+        self.do_convert(book_ids, bulk=bulk)
+
+    def do_convert(self, book_ids, bulk=None):
         previous = self.gui.library_view.currentIndex()
         rows = [x.row() for x in \
                 self.gui.library_view.selectionModel().selectedRows()]

src/calibre/gui2/actions/delete.py

@@ -83,11 +83,37 @@ class MultiDeleter(QObject): # {{{
 class DeleteAction(InterfaceAction):
 
     name = 'Remove Books'
-    action_spec = (_('Remove books'), 'trash.png', None, 'Del')
+    action_spec = (_('Remove books'), 'trash.png', _('Delete books'), 'Del')
     action_type = 'current'
     action_add_menu = True
     action_menu_clone_qaction = _('Remove selected books')
 
+    accepts_drops = True
+
+    def accept_enter_event(self, event, mime_data):
+        if mime_data.hasFormat("application/calibre+from_library"):
+            return True
+        return False
+
+    def accept_drag_move_event(self, event, mime_data):
+        if mime_data.hasFormat("application/calibre+from_library"):
+            return True
+        return False
+
+    def drop_event(self, event, mime_data):
+        mime = 'application/calibre+from_library'
+        if mime_data.hasFormat(mime):
+            self.dropped_ids = tuple(map(int, str(mime_data.data(mime)).split()))
+            QTimer.singleShot(1, self.do_drop)
+            return True
+        return False
+
+    def do_drop(self):
+        book_ids = self.dropped_ids
+        del self.dropped_ids
+        if book_ids:
+            self.do_library_delete(book_ids)
+
     def genesis(self):
         self.qaction.triggered.connect(self.delete_books)
         self.delete_menu = self.qaction.menu()
@@ -296,17 +322,8 @@ class DeleteAction(InterfaceAction):
             current_row = rmap.get(next_id, None)
         self.library_ids_deleted(ids_deleted, current_row=current_row)
 
-    def delete_books(self, *args):
-        '''
-        Delete selected books from device or library.
-        '''
+    def do_library_delete(self, to_delete_ids):
         view = self.gui.current_view()
-        rows = view.selectionModel().selectedRows()
-        if not rows or len(rows) == 0:
-            return
-        # Library view is visible.
-        if self.gui.stack.currentIndex() == 0:
-            to_delete_ids = [view.model().id(r) for r in rows]
         # Ask the user if they want to delete the book from the library or device if it is in both.
         if self.gui.device_manager.is_device_connected:
             on_device = False
@@ -336,12 +353,25 @@ class DeleteAction(InterfaceAction):
                             +'</p>', 'library_delete_books', self.gui):
             return
         next_id = view.next_id
-            if len(rows) < 5:
+        if len(to_delete_ids) < 5:
             view.model().delete_books_by_id(to_delete_ids)
             self.library_ids_deleted2(to_delete_ids, next_id=next_id)
         else:
             self.__md = MultiDeleter(self.gui, to_delete_ids,
                     partial(self.library_ids_deleted2, next_id=next_id))
+
+    def delete_books(self, *args):
+        '''
+        Delete selected books from device or library.
+        '''
+        view = self.gui.current_view()
+        rows = view.selectionModel().selectedRows()
+        if not rows or len(rows) == 0:
+            return
+        # Library view is visible.
+        if self.gui.stack.currentIndex() == 0:
+            to_delete_ids = [view.model().id(r) for r in rows]
+            self.do_library_delete(to_delete_ids)
         # Device view is visible.
         else:
             if self.gui.stack.currentIndex() == 1:

src/calibre/gui2/actions/device.py

@@ -177,7 +177,8 @@ class SendToDeviceAction(InterfaceAction):
 class ConnectShareAction(InterfaceAction):
 
     name = 'Connect Share'
-    action_spec = (_('Connect/share'), 'connect_share.png', None, None)
+    action_spec = (_('Connect/share'), 'connect_share.png',
+                   _('Share books using a web server or email. Connect to special devices, etc.'), None)
     popup_type = QToolButton.InstantPopup
 
     def genesis(self):

src/calibre/gui2/actions/edit_metadata.py

@@ -23,10 +23,38 @@ from calibre.db.errors import NoSuchFormat
 class EditMetadataAction(InterfaceAction):
 
     name = 'Edit Metadata'
-    action_spec = (_('Edit metadata'), 'edit_input.png', None, _('E'))
+    action_spec = (_('Edit metadata'), 'edit_input.png', _('Change the title/author/cover etc. of books'), _('E'))
     action_type = 'current'
     action_add_menu = True
 
+    accepts_drops = True
+
+    def accept_enter_event(self, event, mime_data):
+        if mime_data.hasFormat("application/calibre+from_library"):
+            return True
+        return False
+
+    def accept_drag_move_event(self, event, mime_data):
+        if mime_data.hasFormat("application/calibre+from_library"):
+            return True
+        return False
+
+    def drop_event(self, event, mime_data):
+        mime = 'application/calibre+from_library'
+        if mime_data.hasFormat(mime):
+            self.dropped_ids = tuple(map(int, str(mime_data.data(mime)).split()))
+            QTimer.singleShot(1, self.do_drop)
+            return True
+        return False
+
+    def do_drop(self):
+        book_ids = self.dropped_ids
+        del self.dropped_ids
+        if book_ids:
+            db = self.gui.library_view.model().db
+            rows = [db.row(i) for i in book_ids]
+            self.edit_metadata_for(rows, book_ids)
+
     def genesis(self):
         md = self.qaction.menu()
         cm = partial(self.create_menu_action, md)
@@ -186,18 +214,23 @@ class EditMetadataAction(InterfaceAction):
         Edit metadata of selected books in library.
         '''
         rows = self.gui.library_view.selectionModel().selectedRows()
-        previous = self.gui.library_view.currentIndex()
         if not rows or len(rows) == 0:
             d = error_dialog(self.gui, _('Cannot edit metadata'),
                              _('No books selected'))
             d.exec_()
             return
-
-        if bulk or (bulk is None and len(rows) > 1):
-            return self.edit_bulk_metadata(checked)
-
         row_list = [r.row() for r in rows]
+        m = self.gui.library_view.model()
+        ids = [m.id(r) for r in rows]
+        self.edit_metadata_for(row_list, ids, bulk=bulk)
+
+    def edit_metadata_for(self, rows, book_ids, bulk=None):
+        previous = self.gui.library_view.currentIndex()
+        if bulk or (bulk is None and len(rows) > 1):
+            return self.do_edit_bulk_metadata(rows, book_ids)
+
         current_row = 0
+        row_list = rows
 
         if len(row_list) == 1:
             cr = row_list[0]
@@ -242,7 +275,6 @@ class EditMetadataAction(InterfaceAction):
             db = self.gui.library_view.model().db
             view.view_format(db.row(id_), fmt)
 
-
     def edit_bulk_metadata(self, checked):
         '''
         Edit metadata of selected books in library in bulk.
@@ -256,6 +288,9 @@ class EditMetadataAction(InterfaceAction):
                     _('No books selected'))
             d.exec_()
             return
+        self.do_edit_bulk_metadata(rows, ids)
+
+    def do_edit_bulk_metadata(self, rows, book_ids):
         # Prevent the TagView from updating due to signals from the database
         self.gui.tags_view.blockSignals(True)
         changed = False
@@ -278,7 +313,7 @@ class EditMetadataAction(InterfaceAction):
             self.gui.tags_view.recount()
             if self.gui.cover_flow:
                 self.gui.cover_flow.dataChanged()
-            self.gui.library_view.select_rows(ids)
+            self.gui.library_view.select_rows(book_ids)
 
     # Merge books {{{
     def merge_books(self, safe_merge=False, merge_only_formats=False):

src/calibre/gui2/actions/fetch_news.py

@@ -16,7 +16,7 @@ from calibre.gui2.actions import InterfaceAction
 class FetchNewsAction(InterfaceAction):
 
     name = 'Fetch News'
-    action_spec = (_('Fetch news'), 'news.png', None, _('F'))
+    action_spec = (_('Fetch news'), 'news.png', _('Download news in ebook form from various websites all over the world'), _('F'))
 
     def location_selected(self, loc):
         enabled = loc == 'library'

src/calibre/gui2/actions/open.py

@@ -11,8 +11,8 @@ from calibre.gui2.actions import InterfaceAction
 class OpenFolderAction(InterfaceAction):
 
     name = 'Open Folder'
-    action_spec = (_('Open containing folder'), 'document_open.png', None,
-            _('O'))
+    action_spec = (_('Open containing folder'), 'document_open.png',
+                   _('Open the folder containing the current book\'s files'), _('O'))
     dont_add_to = frozenset(['context-menu-device'])
     action_type = 'current'
 

src/calibre/gui2/actions/plugin_updates.py

@@ -15,7 +15,7 @@ from calibre.gui2.dialogs.plugin_updater import (PluginUpdaterDialog,
 class PluginUpdaterAction(InterfaceAction):
 
     name = 'Plugin Updater'
-    action_spec = (_('Plugin Updater'), None, None, ())
+    action_spec = (_('Plugin Updater'), None, _('Update any plugins you have installed in calibre'), ())
     action_type = 'current'
 
     def genesis(self):

src/calibre/gui2/actions/polish.py

@@ -10,6 +10,7 @@ __docformat__ = 'restructuredtext en'
 import os, weakref, shutil, textwrap
 from collections import OrderedDict
 from functools import partial
+from future_builtins import map
 
 from PyQt4.Qt import (QDialog, QGridLayout, QIcon, QCheckBox, QLabel, QFrame,
                       QApplication, QDialogButtonBox, Qt, QSize, QSpacerItem,
@@ -364,9 +365,35 @@ class Report(QDialog): # {{{
 class PolishAction(InterfaceAction):
 
     name = 'Polish Books'
-    action_spec = (_('Polish books'), 'polish.png', None, _('P'))
+    action_spec = (_('Polish books'), 'polish.png',
+                   _('Apply the shine of perfection to your books'), _('P'))
     dont_add_to = frozenset(['context-menu-device'])
     action_type = 'current'
+    accepts_drops = True
+
+    def accept_enter_event(self, event, mime_data):
+        if mime_data.hasFormat("application/calibre+from_library"):
+            return True
+        return False
+
+    def accept_drag_move_event(self, event, mime_data):
+        if mime_data.hasFormat("application/calibre+from_library"):
+            return True
+        return False
+
+    def drop_event(self, event, mime_data):
+        mime = 'application/calibre+from_library'
+        if mime_data.hasFormat(mime):
+            self.dropped_ids = tuple(map(int, str(mime_data.data(mime)).split()))
+            QTimer.singleShot(1, self.do_drop)
+            return True
+        return False
+
+    def do_drop(self):
+        book_id_map = self.get_supported_books(self.dropped_ids)
+        del self.dropped_ids
+        if book_id_map:
+            self.do_polish(book_id_map)
 
     def genesis(self):
         self.qaction.triggered.connect(self.polish_books)
@@ -377,7 +404,6 @@ class PolishAction(InterfaceAction):
         self.qaction.setEnabled(enabled)
 
     def get_books_for_polishing(self):
-        from calibre.ebooks.oeb.polish.main import SUPPORTED
         rows = [r.row() for r in
                 self.gui.library_view.selectionModel().selectedRows()]
         if not rows or len(rows) == 0:
@@ -387,11 +413,16 @@ class PolishAction(InterfaceAction):
             return None
         db = self.gui.library_view.model().db
         ans = (db.id(r) for r in rows)
+        return self.get_supported_books(ans)
+
+    def get_supported_books(self, book_ids):
+        from calibre.ebooks.oeb.polish.main import SUPPORTED
+        db = self.gui.library_view.model().db
         supported = set(SUPPORTED)
         for x in SUPPORTED:
             supported.add('ORIGINAL_'+x)
         ans = [(x, set( (db.formats(x, index_is_id=True) or '').split(',') )
-               .intersection(supported)) for x in ans]
+               .intersection(supported)) for x in book_ids]
         ans = [x for x in ans if x[1]]
         if not ans:
             error_dialog(self.gui, _('Cannot polish'),
@@ -409,6 +440,9 @@ class PolishAction(InterfaceAction):
         book_id_map = self.get_books_for_polishing()
         if not book_id_map:
             return
+        self.do_polish(book_id_map)
+
+    def do_polish(self, book_id_map):
         d = Polish(self.gui.library_view.model().db, book_id_map, parent=self.gui)
         if d.exec_() == d.Accepted and d.jobs:
             show_reports = bool(d.show_reports.isChecked())

src/calibre/gui2/actions/preferences.py

@@ -17,7 +17,7 @@ from calibre.constants import DEBUG, isosx
 class PreferencesAction(InterfaceAction):
 
     name = 'Preferences'
-    action_spec = (_('Preferences'), 'config.png', None, _('Ctrl+P'))
+    action_spec = (_('Preferences'), 'config.png', _('Configure calibre'), _('Ctrl+P'))
     action_add_menu = True
     action_menu_clone_qaction = _('Change calibre behavior')
 

src/calibre/gui2/actions/restart.py

@@ -11,7 +11,7 @@ from calibre.gui2.actions import InterfaceAction
 class RestartAction(InterfaceAction):
 
     name = 'Restart'
-    action_spec = (_('Restart'), None, None, _('Ctrl+R'))
+    action_spec = (_('Restart'), None, _('Restart calibre'), _('Ctrl+R'))
 
     def genesis(self):
         self.qaction.triggered.connect(self.restart)

src/calibre/gui2/actions/save_to_disk.py

@@ -17,7 +17,8 @@ from calibre.gui2.actions import InterfaceAction
 class SaveToDiskAction(InterfaceAction):
 
     name = "Save To Disk"
-    action_spec = (_('Save to disk'), 'save.png', None, _('S'))
+    action_spec = (_('Save to disk'), 'save.png',
+                   _('Export ebook files from the calibre library'), _('S'))
     action_type = 'current'
     action_add_menu = True
     action_menu_clone_qaction = True

src/calibre/gui2/actions/show_book_details.py

@@ -13,8 +13,8 @@ from calibre.gui2 import error_dialog
 class ShowBookDetailsAction(InterfaceAction):
 
     name = 'Show Book Details'
-    action_spec = (_('Show book details'), 'dialog_information.png', None,
-            _('I'))
+    action_spec = (_('Show book details'), 'dialog_information.png',
+                   _('Show the detailed metadata for the current book in a separate window'), _('I'))
     dont_add_to = frozenset(['context-menu-device'])
     action_type = 'current'
 

src/calibre/gui2/actions/similar_books.py

@@ -14,7 +14,7 @@ from calibre.gui2.actions import InterfaceAction
 class SimilarBooksAction(InterfaceAction):
 
     name = 'Similar Books'
-    action_spec = (_('Similar books...'), None, None, None)
+    action_spec = (_('Similar books...'), None, _('Show books similar to the current book'), None)
     popup_type = QToolButton.InstantPopup
     action_type = 'current'
     action_add_menu = True

src/calibre/gui2/actions/store.py

@@ -17,7 +17,7 @@ from calibre.gui2.dialogs.confirm_delete import confirm
 class StoreAction(InterfaceAction):
 
     name = 'Store'
-    action_spec = (_('Get books'), 'store.png', None, _('G'))
+    action_spec = (_('Get books'), 'store.png', _('Search dozens of online ebook retailers for the cheapest books'), _('G'))
     action_add_menu = True
     action_menu_clone_qaction = _('Search for ebooks')
 

src/calibre/gui2/actions/tweak_epub.py

@@ -64,7 +64,7 @@ class TweakBook(QDialog):
         self.fmt_choice_box = QGroupBox(_('Choose the format to tweak:'), self)
         self._fl = fl = QHBoxLayout()
         self.fmt_choice_box.setLayout(self._fl)
-        self.fmt_choice_buttons = [QRadioButton(x, self) for x in fmts]
+        self.fmt_choice_buttons = [QRadioButton(y, self) for y in fmts]
         for x in self.fmt_choice_buttons:
             fl.addWidget(x, stretch=10 if x is self.fmt_choice_buttons[-1] else
                     0)
@@ -291,6 +291,32 @@ class TweakEpubAction(InterfaceAction):
     dont_add_to = frozenset(['context-menu-device'])
     action_type = 'current'
 
+    accepts_drops = True
+
+    def accept_enter_event(self, event, mime_data):
+        if mime_data.hasFormat("application/calibre+from_library"):
+            return True
+        return False
+
+    def accept_drag_move_event(self, event, mime_data):
+        if mime_data.hasFormat("application/calibre+from_library"):
+            return True
+        return False
+
+    def drop_event(self, event, mime_data):
+        mime = 'application/calibre+from_library'
+        if mime_data.hasFormat(mime):
+            self.dropped_ids = tuple(map(int, str(mime_data.data(mime)).split()))
+            QTimer.singleShot(1, self.do_drop)
+            return True
+        return False
+
+    def do_drop(self):
+        book_ids = self.dropped_ids
+        del self.dropped_ids
+        if book_ids:
+            self.do_tweak(book_ids[0])
+
     def genesis(self):
         self.qaction.triggered.connect(self.tweak_book)
 
@@ -301,6 +327,9 @@ class TweakEpubAction(InterfaceAction):
                     _('No book selected'), show=True)
 
         book_id = self.gui.library_view.model().id(row)
+        self.do_tweak(book_id)
+
+    def do_tweak(self, book_id):
         db = self.gui.library_view.model().db
         fmts = db.formats(book_id, index_is_id=True) or ''
         fmts = [x.lower().strip() for x in fmts.split(',')]

src/calibre/gui2/actions/view.py

@@ -34,7 +34,7 @@ class HistoryAction(QAction):
 class ViewAction(InterfaceAction):
 
     name = 'View'
-    action_spec = (_('View'), 'view.png', None, _('V'))
+    action_spec = (_('View'), 'view.png', _('Read books'), _('V'))
     action_type = 'current'
     action_add_menu = True
     action_menu_clone_qaction = True

src/calibre/gui2/bars.py

@@ -117,21 +117,30 @@ class ToolBar(QToolBar): # {{{
         return ch
 
     # support drag&drop from/to library, from/to reader/card, enabled plugins
+    def check_iactions_for_drag(self, event, md, func):
+        if self.added_actions:
+            pos = event.pos()
+            for iac in self.gui.iactions.itervalues():
+                if iac.accepts_drops:
+                    aa = iac.qaction
+                    w = self.widgetForAction(aa)
+                    m = aa.menu()
+                    if (( (w is not None and w.geometry().contains(pos)) or
+                          (m is not None and m.isVisible() and m.geometry().contains(pos)) ) and
+                         getattr(iac, func)(event, md)):
+                        return True
+        return False
+
     def dragEnterEvent(self, event):
         md = event.mimeData()
         if md.hasFormat("application/calibre+from_library") or \
            md.hasFormat("application/calibre+from_device"):
             event.setDropAction(Qt.CopyAction)
             event.accept()
-        elif self.added_actions:
-            for aa in self.added_actions:
-                if (getattr(aa.associated_interface_action, 'accepts_drops', False) and
-                    aa.menu().geometry().contains(event.pos())):
-                    if aa.associated_interface_action.accept_enter_event(md):
+            return
+
+        if self.check_iactions_for_drag(event, md, 'accept_enter_event'):
             event.accept()
-                        break
-            else:
-                event.ignore()
         else:
             event.ignore()
 
@@ -152,15 +161,8 @@ class ToolBar(QToolBar): # {{{
             event.acceptProposedAction()
             return
 
-        if self.added_actions:
-            for aa in self.added_actions:
-                if (getattr(aa.associated_interface_action, 'accepts_drops', False) and
-                    aa.menu().geometry().contains(event.pos())):
-                    if aa.associated_interface_action.accept_drag_move_event(md):
+        if self.check_iactions_for_drag(event, md, 'accept_drag_move_event'):
             event.acceptProposedAction()
-                        break
-            else:
-                event.ignore()
         else:
             event.ignore()
 
@@ -191,10 +193,7 @@ class ToolBar(QToolBar): # {{{
                 return
 
         # Give added_actions an opportunity to process the drag&drop event
-        for aa in self.added_actions:
-            if (getattr(aa.associated_interface_action, 'accepts_drops', False) and
-                aa.menu().geometry().contains(event.pos())):
-                aa.associated_interface_action.drop_event(event)
+        if self.check_iactions_for_drag(event, data, 'drop_event'):
             event.accept()
         else:
             event.ignore()

src/calibre/gui2/preferences/toolbar.py

@@ -28,9 +28,10 @@ class BaseModel(QAbstractListModel):
 
     def name_to_action(self, name, gui):
         if name == 'Donate':
-            return FakeAction('Donate', _('Donate'), 'donate.png',
-                    dont_add_to=frozenset(['context-menu',
-                        'context-menu-device']))
+            return FakeAction(
+                'Donate', _('Donate'), 'donate.png', tooltip=
+                _('Donate to support the development of calibre'),
+                dont_add_to=frozenset(['context-menu', 'context-menu-device']))
         if name == 'Location Manager':
             return FakeAction('Location Manager', _('Location Manager'), 'reader.png',
                     _('Switch between library and device views'),
@@ -247,6 +248,18 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
         self.remove_action_button.clicked.connect(self.remove_action)
         self.action_up_button.clicked.connect(partial(self.move, -1))
         self.action_down_button.clicked.connect(partial(self.move, 1))
+        self.all_actions.setMouseTracking(True)
+        self.current_actions.setMouseTracking(True)
+        self.all_actions.entered.connect(self.all_entered)
+        self.current_actions.entered.connect(self.current_entered)
+
+    def all_entered(self, index):
+        tt = self.all_actions.model().data(index, Qt.ToolTipRole).toString()
+        self.help_text.setText(tt)
+
+    def current_entered(self, index):
+       tt = self.current_actions.model().data(index, Qt.ToolTipRole).toString()
+       self.help_text.setText(tt)
 
     def what_changed(self, idx):
         key = unicode(self.what.itemData(idx).toString())
@@ -264,7 +277,7 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
         names = self.all_actions.model().names(x)
         if names:
             not_added = self.current_actions.model().add(names)
-            ns = set([x.name for x in not_added])
+            ns = set([y.name for y in not_added])
             added = set(names) - ns
             self.all_actions.model().remove(x, added)
             if not_added:
@@ -283,7 +296,7 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
         names = self.current_actions.model().names(x)
         if names:
             not_removed = self.current_actions.model().remove(x)
-            ns = set([x.name for x in not_removed])
+            ns = set([y.name for y in not_removed])
             removed = set(names) - ns
             self.all_actions.model().add(removed)
             if not_removed:

src/calibre/gui2/preferences/toolbar.ui

@@ -234,6 +234,13 @@
      </layout>
     </widget>
    </item>
+   <item>
+    <widget class="QLabel" name="help_text">
+     <property name="text">
+      <string/>
+     </property>
+    </widget>
+   </item>
    <item>
     <widget class="QWidget" name="spacer_widget" native="true">
      <layout class="QVBoxLayout" name="verticalLayout_5">