SF.net SVN: fclient:[797] trunk/fclient/src/fclient/impl/lib/qt4ex/lib/ settings.py

[<jU...@us...>]

Revision: 797
          http://fclient.svn.sourceforge.net/fclient/?rev=797&view=rev
Author:   jUrner
Date:     2008-07-28 12:18:41 +0000 (Mon, 28 Jul 2008)

Log Message:
-----------
added a controler to associate widgets to settings

Modified Paths:
--------------
    trunk/fclient/src/fclient/impl/lib/qt4ex/lib/settings.py

Modified: trunk/fclient/src/fclient/impl/lib/qt4ex/lib/settings.py
===================================================================
--- trunk/fclient/src/fclient/impl/lib/qt4ex/lib/settings.py	2008-07-28 12:18:20 UTC (rev 796)
+++ trunk/fclient/src/fclient/impl/lib/qt4ex/lib/settings.py	2008-07-28 12:18:41 UTC (rev 797)
@@ -166,6 +166,7 @@
 		"""
 		settings = self.settingsObject()
 		settings.beginGroup(self._key_)
+		mySettings = {}
 		try:
 			for name in self._settingsOrder:
 				typeSetting = self.type(name)	
@@ -181,10 +182,12 @@
 						obj, ok = tools.castVariant(v, typeSetting)
 					else:
 						obj, ok = getattr(self, 'to' + typeSetting)(settings, name, v)
-					self._settingsDict[name].value = obj if ok else self.default(name)
+					mySettings[name] = obj if ok else self.default(name)
+					#self._settingsDict[name].value = obj if ok else self.default(name)
 		finally:
 			settings.endGroup()
 			self.finalizeSettingsObject(settings)
+		self.setValues(**mySettings)
 		return self
 	
 	
@@ -389,5 +392,100 @@
 				return string, True
 		return None, False
 		
+#**********************************************************************************
+#
+#**********************************************************************************
+class SettingsControler(QtCore.QObject):
+	"""associates widgets to settings and automatically adjusts settings according to widget signals
+	
+	@signal: isDirty(bool) . emitted when the dirty status of the controler changes
+	
+	
+	sample::
+		class MySettings(qt4ex.lib.settings.SettingsBase):
+			_key_ = 'MySettingsKey'
+			_settings_ = (
+					('MySetting1', 'Bool', QtCore.QString('MyDefaultValue')),
+					)
+		
+		mySettings = MySettings()
+		myControler = SettingsControler(mySettings)
+		myControler.addLineEdit(myLineEdit, 'MySetting1')
+					
+		myObject.connect(myControler, QtCore.SIGNAL('isDirty(bool)', myObject.whatever)
+	
+	"""
+	def __init__(self, settings, parent=None):
+		QtCore.QObject.__init__(self, parent)
+		self.dirtyObjects =  []
+		self.objects = {}
+		self.settings = settings
+		
+	#########################
+	## methods
+	#########################
+	def addLineEdit(self, lineEdit, settingName):
+		"""adds a QLineEdit as controler for the specified setting"""
+		self.objects[lineEdit] = settingName
+		lineEdit.setText(self.settings.value(settingName))
+		self.connect(lineEdit, QtCore.SIGNAL('textChanged(const QString &)'), self.onLineEditTextChanged)
 
+	def addSpinBox(self, spinBox, settingName):
+		"""adds a QSpinBox as controler for the specified setting"""
+		self.objects[spinBox] = settingName
+		spinBox.setValue(self.settings.value(settingName))
+		self.connect(spinBox, QtCore.SIGNAL('valueChanged(int)'), self.onSpinBoxValueChanged)
+	
+	def apply(self):
+		"""applies the values of the controled widgets to the settings object"""
+		settings = {}
+		for obj, settingName in self.objects.items():
+			if isinstance(obj, QtGui.QLineEdit):
+				value = obj.text()
+			elif isinstance(obj, QtGui.QSpinBox):
+				value = obj.value()
+			settings[settingName] = value
+		
+		del self.dirtyObjects[:]
+		self.settings.setValues(**settings)
+		self.emit(QtCore.SIGNAL('isDirty(bool)'), False)
+		return True
+		
+	def restoreDefaults(self):
+		"""resores the default settings and updates the values of the controlled widgets accordingly"""
+		for obj, settingName in self.objects.items():
+			value = self.settings.default(settingName)
+			if isinstance(obj, QtGui.QLineEdit):
+				obj.setText(value)
+			elif isinstance(obj, QtGui.QSpinBox):
+				obj.setValue(value)
+		
+		del self.dirtyObjects[:]
+		self.emit(QtCore.SIGNAL('isDirty(bool)'), False)
+		return True
+		
+	#########################
+	## event handlers
+	#########################
+	def onLineEditTextChanged(self, text):
+		lineEdit = self.sender()
+		settingName = self.objects[lineEdit]
+		if lineEdit.text() == self.settings.value(settingName):
+			if lineEdit in self.dirtyObjects:
+				self.dirtyObjects.remove(lineEdit)
+		else:
+			if lineEdit not in self.dirtyObjects:
+				self.dirtyObjects.append(lineEdit)
+		self.emit(QtCore.SIGNAL('isDirty(bool)'), bool(self.dirtyObjects))
+			
+	def onSpinBoxValueChanged(self, n):
+		spinBox= self.sender()
+		settingName = self.objects[spinBox]
+		if spinBox.value() == self.settings.value(settingName):
+			if spinBox in self.dirtyObjects:
+				self.dirtyObjects.remove(spinBox)
+		else:
+			if spinBox not in self.dirtyObjects:
+				self.dirtyObjects.append(spinBox)
+		self.emit(QtCore.SIGNAL('isDirty(bool)'), bool(self.dirtyObjects))
 	
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