eric6/WebBrowser/UserAgent/UserAgentModel.py

Wed, 30 Dec 2020 11:00:44 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Wed, 30 Dec 2020 11:00:44 +0100
branch
maintenance
changeset 7924
8a96736d465e
parent 7781
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child 8143
2c730d5fd177
permissions
-rw-r--r--

Updated copyright for 2021.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2012 - 2021 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 model for user agent management.
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8 """
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9
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10 from PyQt5.QtCore import Qt, QModelIndex, QAbstractTableModel
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11
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12
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13 class UserAgentModel(QAbstractTableModel):
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14 """
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15 Class implementing a model for user agent management.
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16 """
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17 def __init__(self, manager, parent=None):
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18 """
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19 Constructor
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20
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21 @param manager reference to the user agent manager (UserAgentManager)
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22 @param parent reference to the parent object (QObject)
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23 """
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24 super(UserAgentModel, self).__init__(parent)
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25
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26 self.__manager = manager
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27 self.__manager.changed.connect(self.__userAgentsChanged)
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28
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29 self.__headers = [
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30 self.tr("Host"),
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31 self.tr("User Agent String"),
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32 ]
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33
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34 def __userAgentsChanged(self):
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35 """
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36 Private slot handling a change of the registered user agent strings.
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37 """
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38 self.beginResetModel()
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39 self.endResetModel()
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40
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41 def removeRows(self, row, count, parent=None):
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42 """
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43 Public method to remove entries from the model.
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44
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45 @param row start row (integer)
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46 @param count number of rows to remove (integer)
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47 @param parent parent index (QModelIndex)
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48 @return flag indicating success (boolean)
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49 """
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50 if parent is None:
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51 parent = QModelIndex()
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52
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53 if parent.isValid():
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54 return False
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55
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56 if count <= 0:
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57 return False
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58
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59 lastRow = row + count - 1
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60
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61 self.beginRemoveRows(parent, row, lastRow)
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62
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63 hostsList = self.__manager.allHostNames()
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64 for index in range(row, lastRow + 1):
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65 self.__manager.removeUserAgent(hostsList[index])
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66
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67 return True
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68
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69 def rowCount(self, parent=None):
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70 """
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71 Public method to get the number of rows of the model.
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72
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73 @param parent parent index (QModelIndex)
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74 @return number of rows (integer)
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75 """
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76 if parent is None:
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77 parent = QModelIndex()
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78
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79 if parent.isValid():
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80 return 0
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81 else:
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82 return self.__manager.hostsCount()
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83
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84 def columnCount(self, parent=None):
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85 """
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86 Public method to get the number of columns of the model.
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87
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88 @param parent parent index (QModelIndex) (Unused)
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89 @return number of columns (integer)
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90 """
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91 return len(self.__headers)
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92
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93 def data(self, index, role):
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94 """
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95 Public method to get data from the model.
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96
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97 @param index index to get data for (QModelIndex)
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98 @param role role of the data to retrieve (integer)
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99 @return requested data
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100 """
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101 if index.row() >= self.__manager.hostsCount() or index.row() < 0:
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102 return None
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103
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104 host = self.__manager.allHostNames()[index.row()]
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105 userAgent = self.__manager.userAgent(host)
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106
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107 if userAgent is None:
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108 return None
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109
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110 if role == Qt.DisplayRole:
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111 if index.column() == 0:
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112 return host
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113 elif index.column() == 1:
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114 return userAgent
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115
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116 return None
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117
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118 def headerData(self, section, orientation, role=Qt.DisplayRole):
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119 """
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120 Public method to get the header data.
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121
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122 @param section section number (integer)
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123 @param orientation header orientation (Qt.Orientation)
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124 @param role data role (integer)
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125 @return header data
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parents:
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126 """
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parents:
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127 if orientation == Qt.Horizontal and role == Qt.DisplayRole:
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parents:
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128 try:
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129 return self.__headers[section]
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130 except IndexError:
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131 pass
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132
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133 return None

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