Remove ViewerPlugin since the new viewer currently has no plugin architecture

manual/plugins.rst

@@ -183,13 +183,3 @@ Preferences plugins
 .. autoclass:: calibre.gui2.preferences.ConfigWidgetBase
    :members:
    :member-order: bysource
-
-Viewer plugins
-----------------
-
-.. autoclass:: calibre.customize.ViewerPlugin
-   :show-inheritance:
-   :members:
-   :member-order: bysource
-
-

src/calibre/customize/__init__.py

@@ -727,66 +727,6 @@ class StoreBase(Plugin):  # {{{
 # }}}
 
 
-class ViewerPlugin(Plugin):  # {{{
-
-    type = _('Viewer')
-
-    '''
-    These plugins are used to add functionality to the calibre E-book viewer.
-    '''
-
-    def load_fonts(self):
-        '''
-        This method is called once at viewer startup. It should load any fonts
-        it wants to make available. For example::
-
-            def load_fonts():
-                from PyQt5.Qt import QFontDatabase
-                font_data = get_resources(['myfont1.ttf', 'myfont2.ttf'])
-                for raw in font_data.values():
-                    QFontDatabase.addApplicationFontFromData(raw)
-        '''
-        pass
-
-    def load_javascript(self, evaljs):
-        '''
-        This method is called every time a new HTML document is loaded in the
-        viewer. Use it to load javascript libraries into the viewer. For
-        example::
-
-            def load_javascript(self, evaljs):
-                js = get_resources('myjavascript.js')
-                evaljs(js)
-        '''
-        pass
-
-    def run_javascript(self, evaljs):
-        '''
-        This method is called every time a document has finished loading. Use
-        it in the same way as load_javascript().
-        '''
-        pass
-
-    def customize_ui(self, ui):
-        '''
-        This method is called once when the viewer is created. Use it to make
-        any customizations you want to the viewer's user interface. For
-        example, you can modify the toolbars via ui.tool_bar and ui.tool_bar2.
-        '''
-        pass
-
-    def customize_context_menu(self, menu, event, hit_test_result):
-        '''
-        This method is called every time the context (right-click) menu is
-        shown. You can use it to customize the context menu. ``event`` is the
-        context menu event and hit_test_result is the QWebHitTestResult for this
-        event in the currently loaded document.
-        '''
-        pass
-
-# }}}
-
-
 class EditBookToolPlugin(Plugin):  # {{{
 
     type = _('Edit book tool')

src/calibre/customize/ui.py

@@ -10,7 +10,7 @@ from calibre.customize import (CatalogPlugin, FileTypePlugin, PluginNotFound,
                               MetadataReaderPlugin, MetadataWriterPlugin,
                               InterfaceActionBase as InterfaceAction,
                               PreferencesPlugin, platform, InvalidPlugin,
-                              StoreBase as Store, ViewerPlugin, EditBookToolPlugin,
+                              StoreBase as Store, EditBookToolPlugin,
                               LibraryClosedPlugin)
 from calibre.customize.conversion import InputFormatPlugin, OutputFormatPlugin
 from calibre.customize.zipplugin import loader
@@ -644,15 +644,6 @@ def patch_metadata_plugins(possibly_updated_plugins):
         _initialized_plugins[i] = pup
 # }}}
 
-# Viewer plugins {{{
-
-
-def all_viewer_plugins():
-    for plugin in _initialized_plugins:
-        if isinstance(plugin, ViewerPlugin):
-            yield plugin
-# }}}
-
 # Editor plugins {{{