E-book viewer: Add keyboard shortcuts to copy the current location to the clipboard. Fixes #1912070 [[Enhancement] Additional access to copying Go To URL location link](https://bugs.launchpad.net/calibre/+bug/1912070)

src/pyj/read_book/highlights.pyj

@@ -5,7 +5,7 @@ from __python__ import bound_methods, hash_literals
 from elementmaker import E
 
 from ajax import encode_query
-from book_list.globals import get_session_data, get_current_query
+from book_list.globals import get_current_query, get_session_data
 from book_list.theme import get_color
 from complete import create_search_bar
 from dom import add_extra_css, build_rule, clear, svgicon, unique_id
@@ -14,7 +14,7 @@ from modals import (
     create_custom_dialog, error_dialog, get_text_dialog, question_dialog,
     warning_dialog
 )
-from read_book.globals import is_dark_theme
+from read_book.globals import current_book, is_dark_theme, runtime
 from widgets import create_button
 
 ICON_SIZE_VAL = 3
@@ -525,14 +525,32 @@ def get_container():
     return document.getElementById(get_container_id())
 
 
+def get_current_link_prefix():
+    if runtime.is_standalone_viewer:
+        return current_book().calibre_book_url
+    link_prefix = window.location.href
+    return link_prefix[:link_prefix.indexOf('#') + 1]
+
+
+def link_to_epubcfi(epubcfi, link_prefix, current_query):
+    if runtime.is_standalone_viewer:
+        current_query = {'open_at': epubcfi}
+        link = link_prefix + encode_query(current_query).replace(/\)/g, '%29')
+    else:
+        if not current_query:
+            current_query = Object.assign({}, get_current_query())
+        current_query.bookpos = epubcfi
+        link = link_prefix + encode_query(current_query)[1:].replace(/\)/g, '%29')
+    return link
+
+
 def render_highlight_as_text(hl, lines, link_prefix, current_query, as_markdown=False):
     lines.push(hl.highlighted_text)
     date = Date(hl.timestamp).toLocaleString()
     if as_markdown:
         cfi = hl.start_cfi
         spine_index = (1 + hl.spine_index) * 2
-        current_query.bookpos = f'epubcfi(/{spine_index}{cfi})'
-        link = link_prefix + encode_query(current_query)[1:].replace(/\)/g, '%29')
+        link = link_to_epubcfi(f'epubcfi(/{spine_index}{cfi})', link_prefix, current_query)
         date = f'[{date}]({link})'
     lines.push(date)
     notes = hl.notes
@@ -547,7 +565,6 @@ def render_highlight_as_text(hl, lines, link_prefix, current_query, as_markdown=
     lines.push('')
 
 
-
 def show_export_dialog(annotations_manager):
     sd = get_session_data()
     fmt = sd.get('highlights_export_format')
@@ -559,8 +576,7 @@ def show_export_dialog(annotations_manager):
     idx = href.indexOf('#')
     href = href[:idx+1]
     current_query = Object.assign({}, get_current_query())
-    link_prefix = window.location.href
-    link_prefix = link_prefix[:link_prefix.indexOf('#') + 1]
+    link_prefix = get_current_link_prefix()
 
     def update_text():
         if fmt is 'calibre_annotations_collection':

src/pyj/read_book/shortcuts.pyj

@@ -206,6 +206,18 @@ def shortcuts_definition():
         _('Copy to clipboard'),
     ),
 
+    'copy_location_to_clipboard': desc(
+        v"['Alt+c']",
+        'ui',
+        _('Copy current location to clipboard'),
+    ),
+
+    'copy_location_as_url_to_clipboard': desc(
+        v"['Ctrl+Shift+c']",
+        'ui',
+        _('Copy current location as calibre:// URL to clipboard'),
+    ),
+
     'start_search': desc(
         v"['/', 'Ctrl+f']",
         'ui',

src/pyj/read_book/view.pyj

@@ -3,7 +3,6 @@
 from __python__ import bound_methods, hash_literals
 
 from elementmaker import E
-from gettext import gettext as _
 
 import read_book.iframe  # noqa
 from ajax import ajax_send
@@ -11,6 +10,7 @@ from book_list.globals import get_session_data
 from book_list.theme import cached_color_to_rgba, get_color, set_ui_colors
 from book_list.ui import query_as_href
 from dom import add_extra_css, build_rule, clear, set_css, svgicon, unique_id
+from gettext import gettext as _
 from iframe_comm import IframeWrapper
 from modals import error_dialog, warning_dialog
 from read_book.annotations import AnnotationsManager
@@ -21,6 +21,8 @@ from read_book.globals import (
     set_current_spine_item, ui_operations
 )
 from read_book.goto import get_next_section
+from read_book.highlights import get_current_link_prefix, link_to_epubcfi
+from read_book.hints import Hints
 from read_book.open_book import add_book_to_recently_viewed
 from read_book.overlay import Overlay
 from read_book.prefs.colors import resolve_color_scheme
@@ -30,12 +32,11 @@ from read_book.prefs.head_foot import render_head_foot
 from read_book.prefs.scrolling import (
     MIN_SCROLL_SPEED_AUTO as SCROLL_SPEED_STEP, change_scroll_speed
 )
+from read_book.read_aloud import ReadAloud
 from read_book.resources import load_resources
 from read_book.scrollbar import BookScrollbar
 from read_book.search import SearchOverlay, find_in_spine
 from read_book.selection_bar import SelectionBar
-from read_book.read_aloud import ReadAloud
-from read_book.hints import Hints
 from read_book.shortcuts import create_shortcut_map
 from read_book.timers import Timers
 from read_book.toc import get_current_toc_nodes, update_visible_toc_nodes
@@ -339,6 +340,19 @@ class View:
     def copy_to_clipboard(self):
         self.iframe_wrapper.send_message('copy_selection')
 
+    def copy_current_location_to_clipboard(self, as_url):
+        link_prefix = get_current_link_prefix()
+        if not link_prefix and as_url:
+            return error_dialog(_('Not a calibre library book'), _(
+                'This book is not a part of a calibre library, so no calibre:// URL for it exists.'))
+        self.get_current_cfi('copy-location-url', def (req_id, data):
+            if as_url:
+                text = link_to_epubcfi(data.cfi, link_prefix)
+            else:
+                text = data.cfi
+            ui_operations.copy_selection(text)
+        )
+
     def set_scrollbar_visibility(self, visible):
         sd = get_session_data()
         sd.set('book_scrollbar', bool(visible))
@@ -485,6 +499,8 @@ class View:
             self.new_bookmark()
         elif data.name is 'copy_to_clipboard':
             self.copy_to_clipboard()
+        elif data.name is 'copy_location_to_clipboard' or data.name is 'copy_location_as_url_to_clipboard':
+            self.copy_current_location_to_clipboard('url' in data.name)
         elif data.name is 'toggle_inspector':
             ui_operations.toggle_inspector()
         elif data.name is 'toggle_lookup':