Get Books: WHen downloading books show a popup message telling the user that the books will be added to the calibre library automatically, to help new users understand what is happening. The popup message can be disabled.

src/calibre/gui2/ebook_download.py

@@ -14,12 +14,37 @@ from mechanize import MozillaCookieJar
 from calibre import browser
 from calibre.constants import __appname__, __version__
 from calibre.ebooks import BOOK_EXTENSIONS
-from calibre.gui2 import Dispatcher
+from calibre.gui2 import Dispatcher, gprefs
+from calibre.gui2.dialogs.message_box import MessageBox
 from calibre.gui2.threaded_jobs import ThreadedJob
 from calibre.ptempfile import PersistentTemporaryDirectory
 from calibre.utils.filenames import ascii_filename
 from calibre.web import get_download_filename_from_response
 
+
+class DownloadInfo(MessageBox):
+
+    def __init__(self, filename, parent=None):
+        MessageBox.__init__(
+            self, MessageBox.INFO, _('Downloading book'), _(
+                'The book {0} will be downloaded and added to your'
+                ' calibre library automatically.').format(filename),
+            show_copy_button=False, parent=parent
+        )
+        self.toggle_checkbox.setChecked(True)
+        self.toggle_checkbox.setVisible(True)
+        self.toggle_checkbox.setText(_('Show this message again'))
+        self.toggle_checkbox.toggled.connect(self.show_again_changed)
+        self.resize_needed.emit()
+
+    def show_again_changed(self):
+        gprefs.set('show_get_books_download_info', self.toggle_checkbox.isChecked())
+
+def show_download_info(filename, parent=None):
+    if not gprefs.get('show_get_books_download_info', True):
+        return
+    DownloadInfo(filename, parent).exec_()
+
 def get_download_filename(response):
     filename = get_download_filename_from_response(response)
     filename, ext = os.path.splitext(filename)

src/calibre/gui2/store/search/search.py

@@ -14,6 +14,7 @@ from PyQt5.Qt import (Qt, QDialog, QDialogButtonBox, QTimer, QCheckBox, QLabel,
 
 from calibre.gui2 import JSONConfig, info_dialog, error_dialog
 from calibre.gui2.dialogs.choose_format import ChooseFormatDialog
+from calibre.gui2.ebook_download import show_download_info
 from calibre.gui2.progress_indicator import ProgressIndicator
 from calibre.gui2.store.config.chooser.chooser_widget import StoreChooserWidget
 from calibre.gui2.store.config.search.search_widget import StoreConfigWidget
@@ -393,6 +394,7 @@ class SearchDialog(QDialog, Ui_Dialog):
             ext = d.format()
             fname = result.title[:60] + '.' + ext.lower()
             fname = ascii_filename(fname)
+            show_download_info(result.title, parent=self)
             self.gui.download_ebook(result.downloads[ext], filename=fname)
 
     def open_store(self, result):

src/calibre/gui2/store/web_control.py

@@ -15,6 +15,7 @@ from PyQt5.QtWebKitWidgets import QWebView, QWebPage
 from calibre import USER_AGENT, get_proxies
 from calibre.ebooks import BOOK_EXTENSIONS
 from calibre.gui2 import choose_save_file
+from calibre.gui2.ebook_download import show_download_info
 from calibre.ptempfile import PersistentTemporaryFile
 from calibre.utils.filenames import ascii_filename
 from calibre.web import get_download_filename
@@ -91,6 +92,7 @@ class NPWebView(QWebView):
             if name:
                 self.gui.download_ebook(url, cf, name, name, False)
         else:
+            show_download_info(filename, self)
             self.gui.download_ebook(url, cf, filename, tags=self.tags)
 
     def ignore_ssl_errors(self, reply, errors):