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-rw-r--r--src/leap/bitmask/gui/loggerwindow.py137
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+# -*- coding: utf-8 -*-
+# loggerwindow.py
+# Copyright (C) 2013 LEAP
+#
+# 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
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+"""
+History log window
+"""
+import logging
+
+from PySide import QtGui
+from ui_loggerwindow import Ui_LoggerWindow
+from leap.common.check import leap_assert, leap_assert_type
+from leap.util.leap_log_handler import LeapLogHandler
+
+logger = logging.getLogger(__name__)
+
+
+class LoggerWindow(QtGui.QDialog):
+ """
+ Window that displays a history of the logged messages in the app.
+ """
+ def __init__(self, handler):
+ """
+ Initialize the widget with the custom handler.
+
+ :param handler: Custom handler that supports history and signal.
+ :type handler: LeapLogHandler.
+ """
+ QtGui.QDialog.__init__(self)
+ leap_assert(handler, "We need a handler for the logger window")
+ leap_assert_type(handler, LeapLogHandler)
+
+ # Load UI
+ self.ui = Ui_LoggerWindow()
+ self.ui.setupUi(self)
+
+ # Make connections
+ self.ui.btnSave.clicked.connect(self._save_log_to_file)
+ self.ui.btnDebug.toggled.connect(self._load_history),
+ self.ui.btnInfo.toggled.connect(self._load_history),
+ self.ui.btnWarning.toggled.connect(self._load_history),
+ self.ui.btnError.toggled.connect(self._load_history),
+ self.ui.btnCritical.toggled.connect(self._load_history)
+
+ # Load logging history and connect logger with the widget
+ self._logging_handler = handler
+ self._connect_to_handler()
+ self._load_history()
+
+ def _connect_to_handler(self):
+ """
+ This method connects the loggerwindow with the handler through a
+ signal communicate the logger events.
+ """
+ self._logging_handler.new_log.connect(self._add_log_line)
+
+ def _add_log_line(self, log):
+ """
+ Adds a line to the history, only if it's in the desired levels to show.
+
+ :param log: a log record to be inserted in the widget
+ :type log: a dict with RECORD_KEY and MESSAGE_KEY.
+ the record contains the LogRecord of the logging module,
+ the message contains the formatted message for the log.
+ """
+ html_style = {
+ logging.DEBUG: "background: #CDFFFF;",
+ logging.INFO: "background: white;",
+ logging.WARNING: "background: #FFFF66;",
+ logging.ERROR: "background: red; color: white;",
+ logging.CRITICAL: "background: red; color: white; font: bold;"
+ }
+ level = log[LeapLogHandler.RECORD_KEY].levelno
+ message = log[LeapLogHandler.MESSAGE_KEY]
+ message = message.replace('\n', '<br>\n')
+
+ if self._logs_to_display[level]:
+ open_tag = "<tr style='" + html_style[level] + "'>"
+ open_tag += "<td width='100%' style='padding: 5px;'>"
+ close_tag = "</td></tr>"
+ message = open_tag + message + close_tag
+
+ self.ui.txtLogHistory.append(message)
+
+ def _load_history(self):
+ """
+ Load the previous logged messages in the widget.
+ They are stored in the custom handler.
+ """
+ self._set_logs_to_display()
+ self.ui.txtLogHistory.clear()
+ history = self._logging_handler.log_history
+ for line in history:
+ self._add_log_line(line)
+
+ def _set_logs_to_display(self):
+ """
+ Sets the logs_to_display dict getting the toggled options from the ui
+ """
+ self._logs_to_display = {
+ logging.DEBUG: self.ui.btnDebug.isChecked(),
+ logging.INFO: self.ui.btnInfo.isChecked(),
+ logging.WARNING: self.ui.btnWarning.isChecked(),
+ logging.ERROR: self.ui.btnError.isChecked(),
+ logging.CRITICAL: self.ui.btnCritical.isChecked()
+ }
+
+ def _save_log_to_file(self):
+ """
+ Lets the user save the current log to a file
+ """
+ fileName, filtr = QtGui.QFileDialog.getSaveFileName(
+ self, self.tr("Save As"))
+
+ if fileName:
+ try:
+ with open(fileName, 'w') as output:
+ output.write(self.ui.txtLogHistory.toPlainText())
+ output.write('\n')
+ logger.debug('Log saved in %s' % (fileName, ))
+ except IOError, e:
+ logger.error("Error saving log file: %r" % (e, ))
+ else:
+ logger.debug('Log not saved!')