forked from openlp/openlp
187 lines
7.7 KiB
Python
187 lines
7.7 KiB
Python
# -*- coding: utf-8 -*-
|
|
# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4
|
|
|
|
###############################################################################
|
|
# OpenLP - Open Source Lyrics Projection #
|
|
# --------------------------------------------------------------------------- #
|
|
# Copyright (c) 2008-2018 OpenLP Developers #
|
|
# --------------------------------------------------------------------------- #
|
|
# This program is free software; you can redistribute it and/or modify it #
|
|
# under the terms of the GNU General Public License as published by the Free #
|
|
# Software Foundation; version 2 of the License. #
|
|
# #
|
|
# This program is distributed in the hope that it will be useful, but WITHOUT #
|
|
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #
|
|
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for #
|
|
# more details. #
|
|
# #
|
|
# You should have received a copy of the GNU General Public License along #
|
|
# with this program; if not, write to the Free Software Foundation, Inc., 59 #
|
|
# Temple Place, Suite 330, Boston, MA 02111-1307 USA #
|
|
###############################################################################
|
|
"""
|
|
Provide plugin management
|
|
"""
|
|
import os
|
|
|
|
from openlp.core.common import extension_loader
|
|
from openlp.core.common.applocation import AppLocation
|
|
from openlp.core.common.mixins import LogMixin, RegistryProperties
|
|
from openlp.core.common.registry import RegistryBase
|
|
from openlp.core.lib import Plugin, PluginStatus
|
|
|
|
|
|
class PluginManager(RegistryBase, LogMixin, RegistryProperties):
|
|
"""
|
|
This is the Plugin manager, which loads all the plugins,
|
|
and executes all the hooks, as and when necessary.
|
|
"""
|
|
def __init__(self, parent=None):
|
|
"""
|
|
The constructor for the plugin manager. Passes the controllers on to
|
|
the plugins for them to interact with via their ServiceItems.
|
|
"""
|
|
super(PluginManager, self).__init__(parent)
|
|
self.log_info('Plugin manager Initialising')
|
|
self.log_debug('Base path {path}'.format(path=AppLocation.get_directory(AppLocation.PluginsDir)))
|
|
self.plugins = []
|
|
self.log_info('Plugin manager Initialised')
|
|
|
|
def bootstrap_initialise(self):
|
|
"""
|
|
Bootstrap all the plugin manager functions
|
|
"""
|
|
self.find_plugins()
|
|
# hook methods have to happen after find_plugins. Find plugins needs
|
|
# the controllers hence the hooks have moved from setupUI() to here
|
|
# Find and insert settings tabs
|
|
self.hook_settings_tabs()
|
|
# Find and insert media manager items
|
|
self.hook_media_manager()
|
|
# Call the hook method to pull in import menus.
|
|
self.hook_import_menu()
|
|
# Call the hook method to pull in export menus.
|
|
self.hook_export_menu()
|
|
# Call the hook method to pull in tools menus.
|
|
self.hook_tools_menu()
|
|
# Call the initialise method to setup plugins.
|
|
self.initialise_plugins()
|
|
|
|
def find_plugins(self):
|
|
"""
|
|
Scan a directory for objects inheriting from the ``Plugin`` class.
|
|
"""
|
|
glob_pattern = os.path.join('plugins', '*', '[!.]*plugin.py')
|
|
extension_loader(glob_pattern)
|
|
plugin_classes = Plugin.__subclasses__()
|
|
plugin_objects = []
|
|
for p in plugin_classes:
|
|
try:
|
|
plugin = p()
|
|
self.log_debug('Loaded plugin {plugin}'.format(plugin=str(p)))
|
|
plugin_objects.append(plugin)
|
|
except TypeError:
|
|
self.log_exception('Failed to load plugin {plugin}'.format(plugin=str(p)))
|
|
plugins_list = sorted(plugin_objects, key=lambda plugin: plugin.weight)
|
|
for plugin in plugins_list:
|
|
if plugin.check_pre_conditions():
|
|
self.log_debug('Plugin {plugin} active'.format(plugin=str(plugin.name)))
|
|
plugin.set_status()
|
|
else:
|
|
plugin.status = PluginStatus.Disabled
|
|
self.plugins.append(plugin)
|
|
|
|
def hook_media_manager(self):
|
|
"""
|
|
Create the plugins' media manager items.
|
|
"""
|
|
for plugin in self.plugins:
|
|
if plugin.status is not PluginStatus.Disabled:
|
|
plugin.create_media_manager_item()
|
|
|
|
def hook_settings_tabs(self):
|
|
"""
|
|
Loop through all the plugins. If a plugin has a valid settings tab
|
|
item, add it to the settings tab.
|
|
Tabs are set for all plugins not just Active ones
|
|
|
|
"""
|
|
for plugin in self.plugins:
|
|
if plugin.status is not PluginStatus.Disabled:
|
|
plugin.create_settings_tab(self.settings_form)
|
|
|
|
def hook_import_menu(self):
|
|
"""
|
|
Loop through all the plugins and give them an opportunity to add an
|
|
item to the import menu.
|
|
|
|
"""
|
|
for plugin in self.plugins:
|
|
if plugin.status is not PluginStatus.Disabled:
|
|
plugin.add_import_menu_item(self.main_window.file_import_menu)
|
|
|
|
def hook_export_menu(self):
|
|
"""
|
|
Loop through all the plugins and give them an opportunity to add an
|
|
item to the export menu.
|
|
"""
|
|
for plugin in self.plugins:
|
|
if plugin.status is not PluginStatus.Disabled:
|
|
plugin.add_export_menu_item(self.main_window.file_export_menu)
|
|
|
|
def hook_tools_menu(self):
|
|
"""
|
|
Loop through all the plugins and give them an opportunity to add an
|
|
item to the tools menu.
|
|
"""
|
|
for plugin in self.plugins:
|
|
if plugin.status is not PluginStatus.Disabled:
|
|
plugin.add_tools_menu_item(self.main_window.tools_menu)
|
|
|
|
def hook_upgrade_plugin_settings(self, settings):
|
|
"""
|
|
Loop through all the plugins and give them an opportunity to upgrade their settings.
|
|
|
|
:param settings: The Settings object containing the old settings.
|
|
"""
|
|
for plugin in self.plugins:
|
|
if plugin.status is not PluginStatus.Disabled:
|
|
plugin.upgrade_settings(settings)
|
|
|
|
def initialise_plugins(self):
|
|
"""
|
|
Loop through all the plugins and give them an opportunity to initialise themselves.
|
|
"""
|
|
for plugin in self.plugins:
|
|
self.log_info('initialising plugins {plugin} in a {state} state'.format(plugin=plugin.name,
|
|
state=plugin.is_active()))
|
|
if plugin.is_active():
|
|
plugin.initialise()
|
|
self.log_info('Initialisation Complete for {plugin}'.format(plugin=plugin.name))
|
|
|
|
def finalise_plugins(self):
|
|
"""
|
|
Loop through all the plugins and give them an opportunity to clean themselves up
|
|
"""
|
|
for plugin in self.plugins:
|
|
if plugin.is_active():
|
|
plugin.finalise()
|
|
self.log_info('Finalisation Complete for {plugin}'.format(plugin=plugin.name))
|
|
|
|
def get_plugin_by_name(self, name):
|
|
"""
|
|
Return the plugin which has a name with value ``name``.
|
|
"""
|
|
for plugin in self.plugins:
|
|
if plugin.name == name:
|
|
return plugin
|
|
return None
|
|
|
|
def new_service_created(self):
|
|
"""
|
|
Loop through all the plugins and give them an opportunity to handle a new service
|
|
"""
|
|
for plugin in self.plugins:
|
|
if plugin.is_active():
|
|
plugin.new_service_created()
|