Mercurial Repositories > eric / file comparison
comparison: eric6/Helpviewer/History/HistoryModel.py
eric6/Helpviewer/History/HistoryModel.py
- changeset 6942
- 2602857055c5
- parent 6645
- ad476851d7e0
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| 6941:f99d60d6b59b | 6942:2602857055c5 |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2009 - 2019 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing the history model. | |
| 8 """ | |
| 9 | |
| 10 from __future__ import unicode_literals | |
| 11 | |
| 12 from PyQt5.QtCore import Qt, QAbstractTableModel, QModelIndex, QUrl | |
| 13 | |
| 14 import Helpviewer.HelpWindow | |
| 15 | |
| 16 | |
| 17 class HistoryModel(QAbstractTableModel): | |
| 18 """ | |
| 19 Class implementing the history model. | |
| 20 """ | |
| 21 DateRole = Qt.UserRole + 1 | |
| 22 DateTimeRole = Qt.UserRole + 2 | |
| 23 UrlRole = Qt.UserRole + 3 | |
| 24 UrlStringRole = Qt.UserRole + 4 | |
| 25 TitleRole = Qt.UserRole + 5 | |
| 26 MaxRole = TitleRole | |
| 27 | |
| 28 def __init__(self, historyManager, parent=None): | |
| 29 """ | |
| 30 Constructor | |
| 31 | |
| 32 @param historyManager reference to the history manager object | |
| 33 (HistoryManager) | |
| 34 @param parent reference to the parent object (QObject) | |
| 35 """ | |
| 36 super(HistoryModel, self).__init__(parent) | |
| 37 | |
| 38 self.__historyManager = historyManager | |
| 39 | |
| 40 self.__headers = [ | |
| 41 self.tr("Title"), | |
| 42 self.tr("Address"), | |
| 43 ] | |
| 44 | |
| 45 self.__historyManager.historyReset.connect(self.historyReset) | |
| 46 self.__historyManager.entryRemoved.connect(self.historyReset) | |
| 47 self.__historyManager.entryAdded.connect(self.entryAdded) | |
| 48 self.__historyManager.entryUpdated.connect(self.entryUpdated) | |
| 49 | |
| 50 def historyReset(self): | |
| 51 """ | |
| 52 Public slot to reset the model. | |
| 53 """ | |
| 54 self.beginResetModel() | |
| 55 self.endResetModel() | |
| 56 | |
| 57 def entryAdded(self): | |
| 58 """ | |
| 59 Public slot to handle the addition of a history entry. | |
| 60 """ | |
| 61 self.beginInsertRows(QModelIndex(), 0, 0) | |
| 62 self.endInsertRows() | |
| 63 | |
| 64 def entryUpdated(self, row): | |
| 65 """ | |
| 66 Public slot to handle the update of a history entry. | |
| 67 | |
| 68 @param row row number of the updated entry (integer) | |
| 69 """ | |
| 70 idx = self.index(row, 0) | |
| 71 self.dataChanged.emit(idx, idx) | |
| 72 | |
| 73 def headerData(self, section, orientation, role=Qt.DisplayRole): | |
| 74 """ | |
| 75 Public method to get the header data. | |
| 76 | |
| 77 @param section section number (integer) | |
| 78 @param orientation header orientation (Qt.Orientation) | |
| 79 @param role data role (integer) | |
| 80 @return header data | |
| 81 """ | |
| 82 if orientation == Qt.Horizontal and role == Qt.DisplayRole: | |
| 83 try: | |
| 84 return self.__headers[section] | |
| 85 except IndexError: | |
| 86 pass | |
| 87 return QAbstractTableModel.headerData(self, section, orientation, role) | |
| 88 | |
| 89 def data(self, index, role=Qt.DisplayRole): | |
| 90 """ | |
| 91 Public method to get data from the model. | |
| 92 | |
| 93 @param index index of history entry to get data for (QModelIndex) | |
| 94 @param role data role (integer) | |
| 95 @return history entry data | |
| 96 """ | |
| 97 lst = self.__historyManager.history() | |
| 98 if index.row() < 0 or index.row() > len(lst): | |
| 99 return None | |
| 100 | |
| 101 itm = lst[index.row()] | |
| 102 if role == self.DateTimeRole: | |
| 103 return itm.dateTime | |
| 104 elif role == self.DateRole: | |
| 105 return itm.dateTime.date() | |
| 106 elif role == self.UrlRole: | |
| 107 return QUrl(itm.url) | |
| 108 elif role == self.UrlStringRole: | |
| 109 return itm.url | |
| 110 elif role == self.TitleRole: | |
| 111 return itm.userTitle() | |
| 112 elif role in [Qt.DisplayRole, Qt.EditRole]: | |
| 113 if index.column() == 0: | |
| 114 return itm.userTitle() | |
| 115 elif index.column() == 1: | |
| 116 return itm.url | |
| 117 elif role == Qt.DecorationRole: | |
| 118 if index.column() == 0: | |
| 119 return Helpviewer.HelpWindow.HelpWindow.icon(QUrl(itm.url)) | |
| 120 | |
| 121 return None | |
| 122 | |
| 123 def columnCount(self, parent=None): | |
| 124 """ | |
| 125 Public method to get the number of columns. | |
| 126 | |
| 127 @param parent index of parent (QModelIndex) | |
| 128 @return number of columns (integer) | |
| 129 """ | |
| 130 if parent is None: | |
| 131 parent = QModelIndex() | |
| 132 | |
| 133 if parent.isValid(): | |
| 134 return 0 | |
| 135 else: | |
| 136 return len(self.__headers) | |
| 137 | |
| 138 def rowCount(self, parent=None): | |
| 139 """ | |
| 140 Public method to determine the number of rows. | |
| 141 | |
| 142 @param parent index of parent (QModelIndex) | |
| 143 @return number of rows (integer) | |
| 144 """ | |
| 145 if parent is None: | |
| 146 parent = QModelIndex() | |
| 147 | |
| 148 if parent.isValid(): | |
| 149 return 0 | |
| 150 else: | |
| 151 return len(self.__historyManager.history()) | |
| 152 | |
| 153 def removeRows(self, row, count, parent=None): | |
| 154 """ | |
| 155 Public method to remove history entries from the model. | |
| 156 | |
| 157 @param row row of the first history entry to remove (integer) | |
| 158 @param count number of history entries to remove (integer) | |
| 159 @param parent index of the parent entry (QModelIndex) | |
| 160 @return flag indicating successful removal (boolean) | |
| 161 """ | |
| 162 if parent is None: | |
| 163 parent = QModelIndex() | |
| 164 | |
| 165 if parent.isValid(): | |
| 166 return False | |
| 167 | |
| 168 lastRow = row + count - 1 | |
| 169 self.beginRemoveRows(parent, row, lastRow) | |
| 170 lst = self.__historyManager.history()[:] | |
| 171 for index in range(lastRow, row - 1, -1): | |
| 172 del lst[index] | |
| 173 self.__historyManager.historyReset.disconnect(self.historyReset) | |
| 174 self.__historyManager.setHistory(lst) | |
| 175 self.__historyManager.historyReset.connect(self.historyReset) | |
| 176 self.endRemoveRows() | |
| 177 return True |
