--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Helpviewer/UserAgent/UserAgentManager.py Sun Feb 05 16:22:37 2012 +0100
@@ -0,0 +1,178 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2012 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing a user agent manager.
+"""
+
+import os
+
+from PyQt4.QtCore import pyqtSignal, QObject
+
+from E5Gui import E5MessageBox
+
+from Utilities.AutoSaver import AutoSaver
+import Utilities
+
+
+class UserAgentManager(QObject):
+ """
+ Class implementing a user agent manager.
+
+ @signal changed() emitted to indicate a change
+ """
+ changed = pyqtSignal()
+
+ def __init__(self, parent=None):
+ """
+ Constructor
+
+ @param parent reference to the parent object (QObject)
+ """
+ super().__init__(parent)
+
+ self.__agents = {} # dictionary with agent strings indexed by host name
+ self.__loaded = False
+ self.__saveTimer = AutoSaver(self, self.save)
+
+ self.changed.connect(self.__saveTimer.changeOccurred)
+
+ def save(self):
+ """
+ Public slot to save the user agent entries to disk.
+ """
+ if not self.__loaded:
+ return
+
+ agentFile = os.path.join(Utilities.getConfigDir(), "browser", "userAgentSettings")
+ try:
+ f = open(agentFile, "w", encoding="utf-8")
+ for host, agent in self.__agents.items():
+ f.write("{0}@@{1}\n".format(host, agent))
+ f.close()
+ except IOError as err:
+ E5MessageBox.critical(None,
+ self.trUtf8("Saving user agent data"),
+ self.trUtf8("""<p>User agent data could not be saved to <b>{0}</b></p>"""
+ """<p>Reason: {1}</p>""").format(agentFile, str(err)))
+ return
+
+ def __load(self):
+ """
+ Private method to load the saved user agent settings.
+ """
+ agentFile = os.path.join(Utilities.getConfigDir(), "browser", "userAgentSettings")
+ if os.path.exists(agentFile):
+ try:
+ f = open(agentFile, "r", encoding="utf-8")
+ lines = f.read()
+ f.close()
+ except IOError as err:
+ E5MessageBox.critical(None,
+ self.trUtf8("Loading user agent data"),
+ self.trUtf8("""<p>User agent data could not be loaded """
+ """from <b>{0}</b></p>"""
+ """<p>Reason: {1}</p>""")\
+ .format(agentFile, str(err)))
+ return
+
+ for line in lines.splitlines():
+ if not line or \
+ line.startswith("#") or \
+ "@@" not in line:
+ continue
+
+ host, agent = line.split("@@", 1)
+ self.__agents[host] = agent
+
+ self.__loaded = True
+
+ def close(self):
+ """
+ Public method to close the user agents manager.
+ """
+ self.__saveTimer.saveIfNeccessary()
+
+ def removeUserAgent(self, host):
+ """
+ Public method to remove a user agent entry.
+
+ @param host host name (string)
+ """
+ if host in self.__agents:
+ del self.__agents[host]
+ self.changed.emit()
+
+ def allHostNames(self):
+ """
+ Public method to get a list of all host names we a user agent setting for.
+
+ @return sorted list of all host names (list of strings)
+ """
+ if not self.__loaded:
+ self.__load()
+
+ return sorted(self.__agents.keys())
+
+ def hostsCount(self):
+ """
+ Public method to get the number of available user agent settings.
+
+ @return number of user agent settings (integer)
+ """
+ if not self.__loaded:
+ self.__load()
+
+ return len(self.__agents)
+
+ def userAgent(self, host):
+ """
+ Public method to get the user agent setting for a host.
+
+ @param host host name (string)
+ @return user agent string (string)
+ """
+ if not self.__loaded:
+ self.__load()
+
+ if host not in self.__agents:
+ return ""
+
+ return self.__agents[host]
+
+ def setUserAgent(self, host, agent):
+ """
+ Public method to set the user agent string for a host.
+
+ @param host host name (string)
+ @param agent user agent string (string)
+ """
+ if host != "" and agent != "":
+ self.__agents[host] = agent
+ self.changed.emit()
+
+ def userAgentForUrl(self, url):
+ """
+ Publci method to determine the user agent for the given URL.
+
+ @param url URL to determine user agent for (QUrl)
+ @return user agent string (string)
+ """
+ if url.isValid():
+ host = url.host()
+ return self.userAgent(host)
+
+ return ""
+
+ def setUserAgentForUrl(self, url, agent):
+ """
+ Public method to set the user agent string for an URL.
+
+ @param url URL to register user agent setting for (QUrl)
+ @param agent new current user agent string (string)
+ """
+ if url.isValid():
+ host = url.host()
+ self.setUserAgent(host, agent)
