Mercurial Repositories > eric / file comparison
comparison: Helpviewer/ZoomManager/ZoomValuesModel.py
Helpviewer/ZoomManager/ZoomValuesModel.py
- changeset 4612
- c9982bcd00f8
- child 4631
- 5c1a96925da4
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| 4610:93732395fc1d | 4612:c9982bcd00f8 |
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| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2015 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing a model for zoom values management. | |
| 8 """ | |
| 9 | |
| 10 from __future__ import unicode_literals | |
| 11 | |
| 12 from PyQt5.QtCore import Qt, QModelIndex, QAbstractTableModel | |
| 13 | |
| 14 | |
| 15 class ZoomValuesModel(QAbstractTableModel): | |
| 16 """ | |
| 17 Class implementing a model for zoom values management. | |
| 18 """ | |
| 19 def __init__(self, manager, parent=None): | |
| 20 """ | |
| 21 Constructor | |
| 22 | |
| 23 @param manager reference to the zoom values manager (ZoomManager) | |
| 24 @param parent reference to the parent object (QObject) | |
| 25 """ | |
| 26 super(ZoomValuesModel, self).__init__(parent) | |
| 27 | |
| 28 self.__manager = manager | |
| 29 manager.changed.connect(self.__zoomValuesChanged) | |
| 30 | |
| 31 self.__headers = [ | |
| 32 self.tr("Website"), | |
| 33 self.tr("Zoom Value [%]"), | |
| 34 ] | |
| 35 | |
| 36 def __zoomValuesChanged(self): | |
| 37 """ | |
| 38 Private slot handling a change of the registered zoom values. | |
| 39 """ | |
| 40 self.beginResetModel() | |
| 41 self.endResetModel() | |
| 42 | |
| 43 def removeRows(self, row, count, parent=QModelIndex()): | |
| 44 """ | |
| 45 Public method to remove entries from the model. | |
| 46 | |
| 47 @param row start row (integer) | |
| 48 @param count number of rows to remove (integer) | |
| 49 @param parent parent index (QModelIndex) | |
| 50 @return flag indicating success (boolean) | |
| 51 """ | |
| 52 if parent.isValid(): | |
| 53 return False | |
| 54 | |
| 55 if count <= 0: | |
| 56 return False | |
| 57 | |
| 58 lastRow = row + count - 1 | |
| 59 | |
| 60 self.beginRemoveRows(parent, row, lastRow) | |
| 61 | |
| 62 siteList = self.__manager.allSiteNames() | |
| 63 for index in range(row, lastRow + 1): | |
| 64 self.__manager.removeZoomValue(siteList[index]) | |
| 65 | |
| 66 return True | |
| 67 | |
| 68 def rowCount(self, parent=QModelIndex()): | |
| 69 """ | |
| 70 Public method to get the number of rows of the model. | |
| 71 | |
| 72 @param parent parent index (QModelIndex) | |
| 73 @return number of rows (integer) | |
| 74 """ | |
| 75 if parent.isValid(): | |
| 76 return 0 | |
| 77 else: | |
| 78 return self.__manager.sitesCount() | |
| 79 | |
| 80 def columnCount(self, parent=QModelIndex()): | |
| 81 """ | |
| 82 Public method to get the number of columns of the model. | |
| 83 | |
| 84 @param parent parent index (QModelIndex) | |
| 85 @return number of columns (integer) | |
| 86 """ | |
| 87 return len(self.__headers) | |
| 88 | |
| 89 def data(self, index, role): | |
| 90 """ | |
| 91 Public method to get data from the model. | |
| 92 | |
| 93 @param index index to get data for (QModelIndex) | |
| 94 @param role role of the data to retrieve (integer) | |
| 95 @return requested data | |
| 96 """ | |
| 97 if index.row() >= self.__manager.sitesCount() or index.row() < 0: | |
| 98 return None | |
| 99 | |
| 100 site = self.__manager.allSiteNames()[index.row()] | |
| 101 siteInfo = self.__manager.siteInfo(site) | |
| 102 | |
| 103 if siteInfo is None: | |
| 104 return None | |
| 105 | |
| 106 if role == Qt.DisplayRole: | |
| 107 if index.column() == 0: | |
| 108 return site | |
| 109 elif index.column() == 1: | |
| 110 return siteInfo | |
| 111 | |
| 112 return None | |
| 113 | |
| 114 def headerData(self, section, orientation, role=Qt.DisplayRole): | |
| 115 """ | |
| 116 Public method to get the header data. | |
| 117 | |
| 118 @param section section number (integer) | |
| 119 @param orientation header orientation (Qt.Orientation) | |
| 120 @param role data role (integer) | |
| 121 @return header data | |
| 122 """ | |
| 123 if orientation == Qt.Horizontal and role == Qt.DisplayRole: | |
| 124 try: | |
| 125 return self.__headers[section] | |
| 126 except IndexError: | |
| 127 pass | |
| 128 | |
| 129 return None |
