Helpviewer/ZoomManager/ZoomValuesModel.py

Sun, 06 Dec 2015 19:09:32 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sun, 06 Dec 2015 19:09:32 +0100
changeset 4612
c9982bcd00f8
child 4631
5c1a96925da4
permissions
-rw-r--r--

Added capability to remember the zoom values for each site (incl. a dialog to manage these).

4612
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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1 # -*- coding: utf-8 -*-
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2
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
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3 # Copyright (c) 2015 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 zoom values management.
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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 PyQt5.QtCore import Qt, QModelIndex, QAbstractTableModel
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13
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14
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15 class ZoomValuesModel(QAbstractTableModel):
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16 """
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17 Class implementing a model for zoom values management.
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18 """
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19 def __init__(self, manager, parent=None):
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20 """
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21 Constructor
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22
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23 @param manager reference to the zoom values manager (ZoomManager)
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24 @param parent reference to the parent object (QObject)
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25 """
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26 super(ZoomValuesModel, self).__init__(parent)
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27
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28 self.__manager = manager
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29 manager.changed.connect(self.__zoomValuesChanged)
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30
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31 self.__headers = [
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32 self.tr("Website"),
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33 self.tr("Zoom Value [%]"),
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34 ]
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35
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36 def __zoomValuesChanged(self):
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37 """
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38 Private slot handling a change of the registered zoom values.
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39 """
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40 self.beginResetModel()
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41 self.endResetModel()
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42
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43 def removeRows(self, row, count, parent=QModelIndex()):
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44 """
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45 Public method to remove entries from the model.
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46
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47 @param row start row (integer)
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48 @param count number of rows to remove (integer)
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49 @param parent parent index (QModelIndex)
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50 @return flag indicating success (boolean)
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51 """
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52 if parent.isValid():
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53 return False
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54
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55 if count <= 0:
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56 return False
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57
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58 lastRow = row + count - 1
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59
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60 self.beginRemoveRows(parent, row, lastRow)
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61
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62 siteList = self.__manager.allSiteNames()
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63 for index in range(row, lastRow + 1):
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64 self.__manager.removeZoomValue(siteList[index])
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65
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66 return True
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67
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68 def rowCount(self, parent=QModelIndex()):
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69 """
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70 Public method to get the number of rows of the model.
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71
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72 @param parent parent index (QModelIndex)
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73 @return number of rows (integer)
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74 """
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75 if parent.isValid():
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76 return 0
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77 else:
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78 return self.__manager.sitesCount()
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79
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80 def columnCount(self, parent=QModelIndex()):
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81 """
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82 Public method to get the number of columns of the model.
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83
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84 @param parent parent index (QModelIndex)
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85 @return number of columns (integer)
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86 """
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87 return len(self.__headers)
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88
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89 def data(self, index, role):
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90 """
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91 Public method to get data from the model.
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92
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93 @param index index to get data for (QModelIndex)
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94 @param role role of the data to retrieve (integer)
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95 @return requested data
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96 """
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97 if index.row() >= self.__manager.sitesCount() or index.row() < 0:
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98 return None
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99
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100 site = self.__manager.allSiteNames()[index.row()]
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101 siteInfo = self.__manager.siteInfo(site)
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102
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103 if siteInfo is None:
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104 return None
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105
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106 if role == Qt.DisplayRole:
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107 if index.column() == 0:
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108 return site
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109 elif index.column() == 1:
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110 return siteInfo
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111
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112 return None
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113
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114 def headerData(self, section, orientation, role=Qt.DisplayRole):
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115 """
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116 Public method to get the header data.
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117
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118 @param section section number (integer)
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119 @param orientation header orientation (Qt.Orientation)
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
120 @param role data role (integer)
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
121 @return header data
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
122 """
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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123 if orientation == Qt.Horizontal and role == Qt.DisplayRole:
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
124 try:
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
125 return self.__headers[section]
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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126 except IndexError:
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
127 pass
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
128
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
129 return None

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