forked from openlp/openlp
88 lines
3.4 KiB
Python
88 lines
3.4 KiB
Python
"""
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OpenLP - Open Source Lyrics Projection
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Copyright (c) 2008 Raoul Snyman
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Portions copyright (c) 2008 Martin Thompson, Tim Bentley,
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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"""
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# vim: autoindent shiftwidth=4 expandtab textwidth=80
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# import openlp.plugins
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import os, sys
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import logging
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# Shouldn't this be a core class? i.e. from openlp.core import Plugin
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from openlp.core import Plugin
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# Not sure what this is for. I prefer keeping as much code in the class as possible.
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mypath=os.path.split(os.path.abspath(__file__))[0]
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sys.path.insert(0,(os.path.join(mypath, '..' ,'..')))
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class PluginManager:
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"""
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This is the Plugin manager, which loads all the plugins,
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and executes all the hooks, as and when necessary.
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"""
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global log
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log=logging.getLogger("PluginMgr")
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log.info("Plugin manager loaded")
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def __init__(self, dir):
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"""
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The constructor for the plugin manager. This does a, b and c.
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"""
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log.info("Plugin manager initing")
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if not dir in sys.path:
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log.debug("Inserting %s into sys.path", dir)
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sys.path.insert(0, dir)
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self.basepath=os.path.abspath(dir)
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self.plugins = []
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self.find_plugins(dir)
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log.info("Plugin manager done init")
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def find_plugins(self, dir):
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"""
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Scan the directory dir for objects inheriting from openlp.plugin
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"""
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log.debug("find plugins" + str(dir))
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for root, dirs, files in os.walk(dir):
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for name in files:
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if name.endswith(".py") and not name.startswith("__"):
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path = os.path.abspath(os.path.join(root, name))
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modulename, pyext = os.path.splitext(path)
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prefix = os.path.commonprefix([self.basepath, path])
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# hack off the plugin base path
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modulename = modulename[len(prefix) + 1:]
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modulename = modulename.replace('/', '.')
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# import the modules
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log.debug("Importing %s from %s." % (modulename, path))
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try:
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__import__(modulename, globals(), locals(), [])
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except ImportError:
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pass
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self.plugins = Plugin.__subclasses__()
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self.plugin_by_name = {}
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for p in self.plugins:
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self.plugin_by_name[p.name] = p;
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def hook_media_manager(self, MediaToolBox):
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"""
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Loop through all the plugins. If a plugin has a valid media manager item,
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add it to the media manager.
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"""
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for plugin in self.plugins:
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if plugin.MediaManagerItem is not None:
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log.debug('Inserting media manager item from %s' % plugin.name)
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MediaToolBox.addItem(plugin.MediaManagerItem, plugin.Icon, plugin.Name)
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