Add 'Show in Journal' button to book info panel

This patch add 'Show in Journal' button in the book info panel,
in the future it will be 'Start', but first we need to land the
'Start activity from another activity' feature.

Fixes #4724

GetIABooksActivity.py

@@ -19,6 +19,7 @@
 import os
 import logging
 import time
+import json
 
 from gi.repository import Gtk
 from gi.repository import Gdk
@@ -72,7 +73,7 @@ class GetIABooksActivity(activity.Activity):
 
     def __init__(self, handle):
         "The entry point to the Activity"
-        activity.Activity.__init__(self, handle, False)
+        activity.Activity.__init__(self, handle)
         self.max_participants = 1
 
         self.selected_book = None
@@ -83,6 +84,7 @@ def __init__(self, handle):
         self._lang_code_handler = languagenames.LanguageNames()
         self.catalogs_configuration = {}
         self.catalog_history = []
+        self.books = {}
 
         if os.path.exists('/etc/get-books.cfg'):
             self._read_configuration('/etc/get-books.cfg')
@@ -394,6 +396,10 @@ def __get_book_cb(self, button):
     def enable_button(self,  state):
         self._download.props.sensitive = state
         self.format_combo.props.sensitive = state
+        # Hide read book button, and show the download button.
+        self._showbook.hide()
+        if not self.source == 'local_books':
+            self._download.show()
 
     def move_up_catalog(self, treeview):
         len_cat = len(self.catalog_history)
@@ -568,6 +574,12 @@ def _create_controls(self):
         self._download.connect('clicked', self.__get_book_cb)
         vbox_download.pack_start(self._download, False, False, 10)
 
+        # Really its readbook.
+        # But the patch "Start activity from another activity" never land
+        self._showbook = Gtk.Button(_('Show in journal'))
+        self._showbook.connect('clicked', self.__show_book_cb)
+        vbox_download.pack_start(self._showbook, False, False, 10)
+
         bottom_hbox = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL)
 
         if self.show_images:
@@ -578,6 +590,7 @@ def _create_controls(self):
         bottom_hbox.pack_start(self.scrolled, True, True, 10)
         bottom_hbox.pack_start(vbox_download, False, False, 10)
         bottom_hbox.show_all()
+        self._showbook.hide()
 
         vbox = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
         vbox.pack_start(self.msg_label, False, False, 10)
@@ -642,8 +655,13 @@ def selection_cb(self, widget):
             if selected_book:
                 self.update_format_combo(selected_book.get_download_links())
                 self.selected_book = selected_book
-                self._download.show()
                 self.show_book_data()
+                if self.books in self.download_url:
+                    self._showbook.show()
+                    self._download.hide()
+                else:
+                    self._showbook.hide()
+                    self._download.show()
 
     def show_message(self, text):
         self.msg_label.set_text(text)
@@ -1068,6 +1086,9 @@ def create_journal_entry(self,  tempfile):
         os.remove(tempfile)
         self.progressbox.hide()
         self._object_id = journal_entry.object_id
+        self.books[self.download_url] = {'id': self._object_id}
+        self._showbook.show()
+        self._download.hide()
         self._show_journal_alert(_('Download completed'), self.selected_title)
 
     def _show_journal_alert(self, title, msg):
@@ -1199,12 +1220,35 @@ def get_entry_info_format(self, query, mime):
             books.append(opds.Book(repo_configuration, entry, ''))
         return books
 
-    def close(self,  skip_save=False):
-        "Override the close method so we don't try to create a Journal entry."
-        activity.Activity.close(self,  True)
+    def read_file(self, file_path):
+        fd = open(file_path, 'r')
+        data = fd.read()
+        self.books = json.loads(data)
 
-    def save(self):
-        pass
+        for book in self.books:
+            b = self.books[book]
+            try:
+                dataobject = datastore.get(b['id'])
+                del dataobject
+            except:
+                self.books.pop(book)
+
+        fd.close()
+
+    def write_file(self, file_path):
+        fd = open(file_path, 'w')
+        data = json.dumps(self.books)
+        fd.write(data)
+        fd.close()
+
+    def __show_book_cb(self, button):
+        """
+        Really its needs to use the 'Start activity from another activity'
+        feature, but it never landed. So, we are using show in journal code
+        for the moment
+        """
+        object_id = self.books[self.download_url]['id']
+        activity.show_object_in_journal(object_id)
 
 
 class ButtonWithImage(Gtk.Button):