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path: root/clPlugin.py
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from PyQt4 import QtGui, QtSvg, QtCore

import plugins
from clMonty import monty
from clSettings import settings, mpdSettings
from misc import *
import log

class Plugin:
	name=None
	dockWidget=None
	settingsWidget=None
	settings=None
	winMain=None
	loaded=None
	listeners=[]
	
	def __init__(self, winMain, name):
		self.name=name
		self.winMain=winMain
		self.loaded=False
		self.listeners=[]

	def getName(self, lower=False):
		if lower:
			return self.name.lower()
		return self.name
	def getInfo(self):
		return ''
	def getExtInfo(self):
		return ''
	def getWinMain(self):
		return self.winMain
	def setStatus(self, status):
		self.winMain.setStatus(status)
	
	def log(self, msg, level=log.LOG_NORMAL):
		log.log("%s: %s"%(self.getName(), msg), level)
	def normal(self, msg):
		self.log(msg)
	def important(self, msg):
		self.log(msg, log.LOG_IMPORTANT)
	def extended(self, msg):
		self.log(msg, log.LOG_EXTENDED)
	def debug(self, msg):
		self.log(msg, log.LOG_DEBUG)
	
	def load(self):
		self.extended("loading")
		if len(self.listeners):
			self.debug("adding %s listeners"%(len(self.listeners)))
			for listener in self.listeners:
				monty.addListener(listener[0], listener[1])

		self._load()
		opts=QtGui.QDockWidget.DockWidgetClosable|QtGui.QDockWidget.DockWidgetMovable
		self.winMain.addDock(self.getDockWidget(opts))
		self.loaded=True
	def unload(self):
		if self.loaded==False:
			return
		self.extended("unloading")
		if len(self.listeners):
			self.debug("removing %s listeners"%(len(self.listeners)))
			for listener in self.listeners:
				monty.removeListener(listener[0], listener[1])

		self._unload()
		self.winMain.removeDock(self.getDockWidget())
		self.dockWidget=None
		self.settingsWidget=None
		self.loaded=False
	def isLoaded(self):
		return self.loaded
	
	def addMontyListener(self, event, callback):
		self.listeners.append([event, callback])
	
	def getDockWidget(self, opts=None):
		try:
			if not self.dockWidget:
				self.dockWidget=self._getDockWidget()
				self.dockWidget.setFeatures(opts)
				self.dockWidget.setAllowedAreas(QtCore.Qt.AllDockWidgetAreas)
		except:
			pass
		return self.dockWidget

	def getSettingsWidget(self):
		"""Get the widget containing all settings."""
		# is the widget constructed yet?
		if not self.settingsWidget:
			self.settings=self._getSettings()
			# do we have any settings?
			if len(self.settings):
				# create a widget
				self.settingsWidget=QtGui.QWidget(None)
				layout=QtGui.QGridLayout()
				self.settingsWidget.setLayout(layout)
				# add for every setting a new entry
				for i in xrange(len(self.settings)):
					setting=self.settings[i]
					try:
						setting[4]
					except:
						# if setting[0] doesn't contain a dot, it means it
						# is for this one, else it might be a setting from
						# another plugin. But this only applies when using
						# the default settings-manager
						if setting[0] and setting[0].count('.')==0:
							setting[0]="%s.%s"%(self._getPluginClassname(self.__class__), setting[0])
						setting.append(settings)
					tooltip="%s\n\n(%s)"%(setting[2],setting[0])
					label=QtGui.QLabel(setting[1])
					wg=setting[3]
					label.setToolTip(tooltip)
					wg.setToolTip(tooltip)
					layout.addWidget(label)
					layout.addWidget(wg, i, 1)

				layout.addWidget(Button('Save settings for '+self.getName(), self.saveSettings), i+1,1)

		return self.settingsWidget
	
	def resetSettingCache(self):
		self.settings=None
		self.settingsWidget=None

	def saveSettings(self):
		if not self.settings:
			self.important('Plugin::saveSettings - no settings to save?')
			return
		for i in xrange(len(self.settings)):
			setting=self.settings[i]
			name=setting[0]
			obj=setting[3]
			settingsMgr=setting[4]
			if isinstance(obj,QtGui.QLineEdit):
				settingsMgr.set(setting[0], setting[3].text())
			elif isinstance(obj,QtGui.QComboBox):
				settingsMgr.set(setting[0], setting[3].currentIndex())
			elif isinstance(obj,QtGui.QTextEdit):
				settingsMgr.set(setting[0], setting[3].toPlainText())
			elif isinstance(obj,QtGui.QPushButton):
				# what the *#$ should we do with this? Just skip!
				print "I don't know what to do with my object!"
				pass
			else:
				print "Can't handle %s"%(obj.__class__)
		if self.isLoaded():
			self.afterSaveSettings()
	
	def getSettingWidget(self, name):
		for i in xrange(len(self.settings)):
			setting=self.settings[i]
			if name==setting[0]:
				return setting[3]
		return None
		
	def _getPluginClassname(self, cl):
		"""Returns the name of a plugin (without 'plugin'-prefix)"""
		return str(cl).split('.')[-1].lower()[len('plugin'):]
		
	
	def getSetting(self, setting, default=None, pluginClass=None):
		if pluginClass==None:
			pluginClass=self.__class__

		# fetch the name
		pluginClass=self._getPluginClassname(pluginClass)
		
		if default==None:
			# what module is this class in?
			module='.'.join(str(self.__class__).split('.')[0:2])
			# import the module
			__import__(module, globals(), locals(), [], -1)
			# set the default
			default=eval("%s.%s_%s_DEFAULT"%(module, pluginClass.upper(), setting.upper()))
		
		return settings.get("%s.%s"%(str(pluginClass).lower(), setting), default)
	
	def setSetting(self, setting, value, pluginClass=None):
		if pluginClass==None:
			pluginClass=self.__class__
		# fetch the name
		pluginClass=self._getPluginClassname(pluginClass)
		settings.set("%s.%s"%(str(pluginClass).lower(), setting), value)

		
	
	def afterSaveSettings(self):
		"""Override this one."""
		pass
	def _getDockWidget(self):
		"""Override this one."""
		return None
	def _getSettings(self):
		"""Override this one.

		This method must return a list of arrays.
		Format: [ [setting, title, tooltip, widget, opt settingsmgr]+ ]"""
		# setting[0] == setting. If setting contains a dot (.), setting is absolute, i.e.
		#	it belongs to a plugin. If it doesn't contain a dot, it belongs to the 
		#	current class. E.g. 'lyrics.engine' and 'engine' are equal, if we are in
		#	the class pluginLyrics. Note that this only applies when setting[4] is
		#	not set.
		# setting[1] == caption
		# setting[2] == help message
		# setting[3] == widget containing the value
		# setting[4] == setting-class to use
		return []
	def _createDock(self, widget):
		"""Creates a QDockWidget with parent $parent containing widget $widget."""
		dock=QtGui.QDockWidget(self.name, self.winMain)
		dock.setObjectName(self.name)
		dock.setWidget(widget)
		
		return dock
	def _load(self):
		"""Override this one."""
		return
	def _unload(self):
		"""Override this one."""
		return