Mercurial Repositories > eric / file comparison
comparison: eric6/WebBrowser/OpenSearch/OpenSearchEngineModel.py
eric6/WebBrowser/OpenSearch/OpenSearchEngineModel.py
- changeset 6942
- 2602857055c5
- parent 6645
- ad476851d7e0
- child 7229
- 53054eb5b15a
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| 6941:f99d60d6b59b | 6942:2602857055c5 |
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| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2009 - 2019 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing a model for search engines. | |
| 8 """ | |
| 9 | |
| 10 from __future__ import unicode_literals | |
| 11 | |
| 12 import re | |
| 13 | |
| 14 from PyQt5.QtCore import Qt, QUrl, QAbstractTableModel, QModelIndex | |
| 15 from PyQt5.QtGui import QPixmap, QIcon | |
| 16 | |
| 17 | |
| 18 class OpenSearchEngineModel(QAbstractTableModel): | |
| 19 """ | |
| 20 Class implementing a model for search engines. | |
| 21 """ | |
| 22 def __init__(self, manager, parent=None): | |
| 23 """ | |
| 24 Constructor | |
| 25 | |
| 26 @param manager reference to the search engine manager | |
| 27 (OpenSearchManager) | |
| 28 @param parent reference to the parent object (QObject) | |
| 29 """ | |
| 30 super(OpenSearchEngineModel, self).__init__(parent) | |
| 31 | |
| 32 self.__manager = manager | |
| 33 manager.changed.connect(self.__enginesChanged) | |
| 34 | |
| 35 self.__headers = [ | |
| 36 self.tr("Name"), | |
| 37 self.tr("Keywords"), | |
| 38 ] | |
| 39 | |
| 40 def removeRows(self, row, count, parent=None): | |
| 41 """ | |
| 42 Public method to remove entries from the model. | |
| 43 | |
| 44 @param row start row (integer) | |
| 45 @param count number of rows to remove (integer) | |
| 46 @param parent parent index (QModelIndex) | |
| 47 @return flag indicating success (boolean) | |
| 48 """ | |
| 49 if parent is None: | |
| 50 parent = QModelIndex() | |
| 51 | |
| 52 if parent.isValid(): | |
| 53 return False | |
| 54 | |
| 55 if count <= 0: | |
| 56 return False | |
| 57 | |
| 58 if self.rowCount() <= 1: | |
| 59 return False | |
| 60 | |
| 61 lastRow = row + count - 1 | |
| 62 | |
| 63 self.beginRemoveRows(parent, row, lastRow) | |
| 64 | |
| 65 nameList = self.__manager.allEnginesNames() | |
| 66 for index in range(row, lastRow + 1): | |
| 67 self.__manager.removeEngine(nameList[index]) | |
| 68 | |
| 69 # removeEngine emits changed() | |
| 70 #self.endRemoveRows() | |
| 71 | |
| 72 return True | |
| 73 | |
| 74 def rowCount(self, parent=None): | |
| 75 """ | |
| 76 Public method to get the number of rows of the model. | |
| 77 | |
| 78 @param parent parent index (QModelIndex) | |
| 79 @return number of rows (integer) | |
| 80 """ | |
| 81 if parent is None: | |
| 82 parent = QModelIndex() | |
| 83 | |
| 84 if parent.isValid(): | |
| 85 return 0 | |
| 86 else: | |
| 87 return self.__manager.enginesCount() | |
| 88 | |
| 89 def columnCount(self, parent=None): | |
| 90 """ | |
| 91 Public method to get the number of columns of the model. | |
| 92 | |
| 93 @param parent parent index (QModelIndex) (Unused) | |
| 94 @return number of columns (integer) | |
| 95 """ | |
| 96 return 2 | |
| 97 | |
| 98 def flags(self, index): | |
| 99 """ | |
| 100 Public method to get flags for a model cell. | |
| 101 | |
| 102 @param index index of the model cell (QModelIndex) | |
| 103 @return flags (Qt.ItemFlags) | |
| 104 """ | |
| 105 if index.column() == 1: | |
| 106 return Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsEditable | |
| 107 else: | |
| 108 return Qt.ItemIsEnabled | Qt.ItemIsSelectable | |
| 109 | |
| 110 def data(self, index, role): | |
| 111 """ | |
| 112 Public method to get data from the model. | |
| 113 | |
| 114 @param index index to get data for (QModelIndex) | |
| 115 @param role role of the data to retrieve (integer) | |
| 116 @return requested data | |
| 117 """ | |
| 118 if index.row() >= self.__manager.enginesCount() or index.row() < 0: | |
| 119 return None | |
| 120 | |
| 121 engine = self.__manager.engine( | |
| 122 self.__manager.allEnginesNames()[index.row()]) | |
| 123 | |
| 124 if engine is None: | |
| 125 return None | |
| 126 | |
| 127 if index.column() == 0: | |
| 128 if role == Qt.DisplayRole: | |
| 129 return engine.name() | |
| 130 | |
| 131 elif role == Qt.DecorationRole: | |
| 132 image = engine.image() | |
| 133 if image.isNull(): | |
| 134 from WebBrowser.WebBrowserWindow import WebBrowserWindow | |
| 135 icon = WebBrowserWindow.icon(QUrl(engine.imageUrl())) | |
| 136 else: | |
| 137 icon = QIcon(QPixmap.fromImage(image)) | |
| 138 return icon | |
| 139 | |
| 140 elif role == Qt.ToolTipRole: | |
| 141 description = self.tr("<strong>Description:</strong> {0}")\ | |
| 142 .format(engine.description()) | |
| 143 if engine.providesSuggestions(): | |
| 144 description += "<br/>" | |
| 145 description += self.tr( | |
| 146 "<strong>Provides contextual suggestions</strong>") | |
| 147 | |
| 148 return description | |
| 149 elif index.column() == 1: | |
| 150 if role in [Qt.EditRole, Qt.DisplayRole]: | |
| 151 return ",".join(self.__manager.keywordsForEngine(engine)) | |
| 152 elif role == Qt.ToolTipRole: | |
| 153 return self.tr( | |
| 154 "Comma-separated list of keywords that may" | |
| 155 " be entered in the location bar followed by search terms" | |
| 156 " to search with this engine") | |
| 157 | |
| 158 return None | |
| 159 | |
| 160 def setData(self, index, value, role=Qt.EditRole): | |
| 161 """ | |
| 162 Public method to set the data of a model cell. | |
| 163 | |
| 164 @param index index of the model cell (QModelIndex) | |
| 165 @param value value to be set | |
| 166 @param role role of the data (integer) | |
| 167 @return flag indicating success (boolean) | |
| 168 """ | |
| 169 if not index.isValid() or index.column() != 1: | |
| 170 return False | |
| 171 | |
| 172 if index.row() >= self.rowCount() or index.row() < 0: | |
| 173 return False | |
| 174 | |
| 175 if role != Qt.EditRole: | |
| 176 return False | |
| 177 | |
| 178 engineName = self.__manager.allEnginesNames()[index.row()] | |
| 179 keywords = re.split("[ ,]+", value) | |
| 180 self.__manager.setKeywordsForEngine( | |
| 181 self.__manager.engine(engineName), keywords) | |
| 182 | |
| 183 return True | |
| 184 | |
| 185 def headerData(self, section, orientation, role=Qt.DisplayRole): | |
| 186 """ | |
| 187 Public method to get the header data. | |
| 188 | |
| 189 @param section section number (integer) | |
| 190 @param orientation header orientation (Qt.Orientation) | |
| 191 @param role data role (integer) | |
| 192 @return header data | |
| 193 """ | |
| 194 if orientation == Qt.Horizontal and role == Qt.DisplayRole: | |
| 195 try: | |
| 196 return self.__headers[section] | |
| 197 except IndexError: | |
| 198 pass | |
| 199 | |
| 200 return None | |
| 201 | |
| 202 def __enginesChanged(self): | |
| 203 """ | |
| 204 Private slot handling a change of the registered engines. | |
| 205 """ | |
| 206 self.beginResetModel() | |
| 207 self.endResetModel() |
