X-Git-Url: https://git.ralfj.de/lilass.git/blobdiff_plain/aaa0b27561726d84cc7c3fcfd16302c87dc628d7..HEAD:/gui.py

diff --git a/gui.py b/gui.py
index 560cb01..4847668 100644
--- a/gui.py
+++ b/gui.py
@@ -1,5 +1,5 @@
 # DSL - easy Display Setup for Laptops
-# Copyright (C) 2012 Ralf Jung <post@ralfj.de>
+# Copyright (C) 2012-2015 Ralf Jung <post@ralfj.de>
 #
 # 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
@@ -16,77 +16,25 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 
 # This file abstracts GUI stuff away, so that the actual dsl.py does not have to deal with it
-import sys
 
 '''
 This module implements two functions:
 
 def error(message):
-	This function displays the error message to the user in some appropriate fassion
+    This function displays the error message to the user in some appropriate fassion
 
 def setup(internalResolutions, externalResolutions):
-	Both arguments are lists of (width, height) tuples of resolutions. You can use dsl.res2user to obtain a user-readable representation of a resolution tuple.
-	The user should be asked about his display setup preferences.
-	The function returns None if the user cancelled, and an instance of dsl.ScreenSetup otherwise.
+    Both arguments are lists of (width, height) tuples of resolutions. You can use dsl.res2user to obtain a user-readable representation of a resolution tuple.
+    The user should be asked about his display setup preferences.
+    The function returns None if the user cancelled, and an instance of dsl.ScreenSetup otherwise.
 '''
-import subprocess, collections
+import collections
 
-# Qt frontend
-class QtFrontend:
-	def __init__(self):
-		from PyQt4 import QtGui
-		self.app = QtGui.QApplication(sys.argv)
-		print("Qt loaded")
-	
-	def error(self, message):
-		from PyQt4 import QtGui
-		QtGui.QMessageBox.critical(None, 'Fatal error', message)
-	
-	def setup(self, internalResolutions, externalResolutions):
-		from qt_dialogue import PositionSelection
-		return PositionSelection(internalResolutions, externalResolutions).run()
-	
-	@staticmethod
-	def isAvailable():
-		try:
-			import PyQt4
-			return True
-		except ImportError:
-			return False
+from qt_frontend import QtFrontend
+from cli_frontend import CLIFrontend
+from zenity_frontend import ZenityFrontend
 
 
-# Zenity frontend
-class ZenityFrontend:
-	def error(message):
-		'''Displays a fatal error to the user'''
-		subprocess.check_call(["zenity", "--error", "--text="+message])
-	
-	def setup(self, internalResolutions, externalResolutions):
-		from zenity_dialogue import run
-		run(internalResolutions, externalResolutions)
-	
-	@staticmethod
-	def isAvailable():
-		try:
-			from dsl import processOutputIt
-			processOutputIt("zenity", "--version")
-			return True
-		except Exception:
-			return False
-
-
-# CLI frontend
-class CLIFrontend:
-	def error(self, message):
-		print(message, file=sys.stderr)
-	
-	def setup(self, internalResolutions, externalResolutions):
-		raise Exception("Choosing the setup interactively is not supported with the CLI frontend")
-	
-	@staticmethod
-	def isAvailable():
-		return True
-
 # list of available frontends
 frontends = collections.OrderedDict()
 frontends["qt"] = QtFrontend
@@ -95,15 +43,17 @@ frontends["cli"] = CLIFrontend
 
 # get a frontend
 def getFrontend(name = None):
-	# by name
-	if name is not None:
-		if name in frontends:
-			if frontends[name].isAvailable():
-				return frontends[name]() # call constructor
-		# frontend not found or not available
-		raise Exception("Frontend %s not found or not available" % name)
-	# auto-detect
-	for frontend in list(frontends.values()):
-		if frontend.isAvailable():
-			return frontend() # call constructor
-	raise Exception("No frontend is available - this should not happen")
+    # by name
+    if name is not None:
+        if name in frontends:
+            if frontends[name].isAvailable():
+                return frontends[name]() # call constructor
+            else:
+                raise Exception("Frontend %s not available" % name)
+        # frontend not found
+        raise Exception("Frontend %s not found" % name)
+    # auto-detect
+    for frontend in frontends.values():
+        if frontend.isAvailable():
+            return frontend() # call constructor
+    raise Exception("No frontend is available - this should not happen")