Sat, 14 Dec 2013 23:44:25 +0100
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1 | # -*- coding: utf-8 -*- |
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2 | |
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3 | # Copyright (c) 2013 Detlev Offenbach <detlev@die-offenbachs.de> |
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4 | # |
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5 | |
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6 | """ |
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7 | Module implementing a specialized error message dialog. |
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8 | """ |
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9 | |
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10 | from __future__ import unicode_literals |
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11 | |
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12 | from PyQt4.QtCore import qInstallMsgHandler, QCoreApplication, QtDebugMsg, \ |
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13 | QtWarningMsg, QtCriticalMsg, QtFatalMsg, QThread, QMetaObject, Qt, Q_ARG, \ |
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14 | QSettings |
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15 | from PyQt4.QtGui import QErrorMessage, qApp, QDialog |
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16 | |
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17 | import Globals |
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18 | import Utilities |
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19 | |
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20 | |
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21 | __msgHandlerDialog = None |
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22 | __origMsgHandler = None |
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23 | |
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24 | |
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25 | class E5ErrorMessage(QErrorMessage): |
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26 | """ |
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27 | Class implementing a specialized error message dialog. |
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28 | """ |
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29 | def __init__(self, parent=None): |
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30 | """ |
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31 | Constructor |
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32 | |
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33 | @param parent reference to the parent widget (QWidget) |
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34 | """ |
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35 | super(E5ErrorMessage, self).__init__(parent) |
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36 | |
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37 | self.settings = QSettings( |
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38 | QSettings.IniFormat, |
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39 | QSettings.UserScope, |
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40 | Globals.settingsNameOrganization, |
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41 | "eric5messagefilters") |
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42 | |
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43 | self.__defaultFilters = [ |
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44 | "QFont::", |
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45 | "QCocoaMenu::removeMenuItem", |
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46 | "QCocoaMenu::insertNative", |
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47 | ",type id:" |
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48 | ] |
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49 | |
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50 | def __filterMessage(self, message): |
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51 | """ |
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52 | Private method to filter messages. |
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53 | |
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54 | @param message message to be checked (string) |
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55 | @return flag indicating that the message should be filtered out |
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56 | (boolean) |
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57 | """ |
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58 | for filter in self.settings.value( |
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59 | "MessageFilters", self.__defaultFilters): |
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60 | if filter in message: |
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61 | return True |
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62 | |
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63 | return False |
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64 | |
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65 | def showMessage(self, message, msgType=""): |
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66 | """ |
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67 | Public method to show a message. |
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68 | |
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69 | @param message error message to be shown (string) |
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70 | @param msgType type of the error message (string) |
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71 | """ |
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72 | if not self.__filterMessage(message): |
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73 | if msgType: |
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74 | super(E5ErrorMessage, self).showMessage(message, msgType) |
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75 | else: |
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76 | super(E5ErrorMessage, self).showMessage(message) |
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77 | |
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78 | def editMessageFilters(self): |
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79 | """ |
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80 | Public method to edit the list of message filters. |
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81 | """ |
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82 | from .E5ErrorMessageFilterDialog import E5ErrorMessageFilterDialog |
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83 | dlg = E5ErrorMessageFilterDialog( |
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84 | self.settings.value("MessageFilters", self.__defaultFilters)) |
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85 | if dlg.exec_() == QDialog.Accepted: |
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86 | filters = dlg.getFilters() |
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87 | self.settings.setValue("MessageFilters", filters) |
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88 | |
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89 | |
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90 | def messageHandler(msgType, message): |
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91 | """ |
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92 | Module function handling messages. |
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93 | |
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94 | @param msgType type of the message (integer, QtMsgType) |
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95 | @param message message to be shown (bytes) |
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96 | """ |
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97 | if __msgHandlerDialog: |
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98 | try: |
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99 | if msgType == QtDebugMsg: |
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100 | messageType = QCoreApplication.translate( |
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101 | "E5ErrorMessage", "Debug Message:") |
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102 | elif msgType == QtWarningMsg: |
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103 | messageType = QCoreApplication.translate( |
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104 | "E5ErrorMessage", "Warning:") |
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105 | elif msgType == QtCriticalMsg: |
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106 | messageType = QCoreApplication.translate( |
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107 | "E5ErrorMessage", "Critical:") |
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108 | elif msgType == QtFatalMsg: |
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109 | messageType = QCoreApplication.translate( |
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110 | "E5ErrorMessage", "Fatal Error:") |
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111 | if isinstance(message, bytes): |
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112 | message = message.decode() |
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113 | message = message.replace("\r\n", "<br/>")\ |
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114 | .replace("\n", "<br/>")\ |
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115 | .replace("\r", "<br/>") |
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116 | msg = "<p><b>{0}</b></p><p>{1}</p>".format( |
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117 | messageType, Utilities.html_uencode(message)) |
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118 | if QThread.currentThread() == qApp.thread(): |
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119 | __msgHandlerDialog.showMessage(msg) |
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120 | else: |
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121 | QMetaObject.invokeMethod( |
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122 | __msgHandlerDialog, |
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123 | "showMessage", |
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124 | Qt.QueuedConnection, |
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125 | Q_ARG(str, msg)) |
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126 | return |
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127 | except RuntimeError: |
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128 | pass |
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129 | elif __origMsgHandler: |
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130 | __origMsgHandler(msgType, message) |
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131 | return |
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132 | |
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133 | if msgType == QtDebugMsg: |
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134 | messageType = QCoreApplication.translate( |
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135 | "E5ErrorMessage", "Debug Message") |
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136 | elif msgType == QtWarningMsg: |
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137 | messageType = QCoreApplication.translate( |
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138 | "E5ErrorMessage", "Warning") |
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139 | elif msgType == QtCriticalMsg: |
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140 | messageType = QCoreApplication.translate( |
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141 | "E5ErrorMessage", "Critical") |
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142 | elif msgType == QtFatalMsg: |
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143 | messageType = QCoreApplication.translate( |
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144 | "E5ErrorMessage", "Fatal Error") |
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145 | if isinstance(message, bytes): |
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146 | message = message.decode() |
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147 | print("{0}: {1}".format(messageType, message)) |
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148 | |
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149 | |
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150 | def qtHandler(): |
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151 | """ |
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152 | Module function to install an E5ErrorMessage dialog as the global |
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153 | message handler. |
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154 | |
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155 | @return reference to the message handler dialog (E5ErrorMessage) |
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156 | """ |
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157 | global __msgHandlerDialog, __origMsgHandler |
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158 | |
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159 | if __msgHandlerDialog is None: |
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160 | # Install an E5ErrorMessage dialog as the global message handler. |
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161 | __msgHandlerDialog = E5ErrorMessage() |
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162 | __origMsgHandler = qInstallMsgHandler(messageHandler) |
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163 | |
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164 | return __msgHandlerDialog |
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165 | |
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166 | |
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167 | def editMessageFilters(): |
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168 | """ |
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169 | Module function to edit the list of message filters. |
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170 | """ |
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171 | if __msgHandlerDialog: |
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172 | __msgHandlerDialog.editMessageFilters() |
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173 | else: |
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174 | print(QCoreApplication.translate( |
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175 | "E5ErrorMessage", "No message handler installed.")) |
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176 | |
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177 | |
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178 | def messageHandlerInstalled(): |
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179 | """ |
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180 | Module function to check, if a message handler was installed. |
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181 | |
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182 | @return flag indicating an installed message handler (boolean) |
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183 | """ |
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184 | return __msgHandlerDialog is not None |