Mercurial Repositories > eric / file comparison
comparison: Helpviewer/AdBlock/AdBlockTreeWidget.py
Helpviewer/AdBlock/AdBlockTreeWidget.py
- changeset 1970
- 02cf3bac079b
- child 1973
- c643c1d33c7b
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| 1969:5522b3266c8b | 1970:02cf3bac079b |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2012 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing a tree widget for the AdBlock configuration dialog. | |
| 8 """ | |
| 9 | |
| 10 from PyQt4.QtCore import Qt | |
| 11 from PyQt4.QtGui import QAbstractItemView, QFont, QTreeWidgetItem, QInputDialog, \ | |
| 12 QLineEdit, QMenu, QApplication, QColor | |
| 13 | |
| 14 from E5Gui.E5TreeWidget import E5TreeWidget | |
| 15 | |
| 16 from .AdBlockRule import AdBlockRule | |
| 17 | |
| 18 | |
| 19 class AdBlockTreeWidget(E5TreeWidget): | |
| 20 """ | |
| 21 Class implementing a tree widget for the AdBlock configuration dialog. | |
| 22 """ | |
| 23 def __init__(self, subscription, parent=None): | |
| 24 """ | |
| 25 Constructor | |
| 26 | |
| 27 @param subscription reference to the subscription (AdBlockSubscription) | |
| 28 @param parenbt reference to the parent widget (QWidget) | |
| 29 """ | |
| 30 super().__init__(parent) | |
| 31 | |
| 32 self.__subscription = subscription | |
| 33 self.__topItem = None | |
| 34 self.__ruleToBeSelected = "" | |
| 35 self.__itemChangingBlock = False | |
| 36 | |
| 37 self.setContextMenuPolicy(Qt.CustomContextMenu) | |
| 38 self.setDefaultItemShowMode(E5TreeWidget.ItemsExpanded) | |
| 39 self.setHeaderHidden(True) | |
| 40 self.setAlternatingRowColors(True) | |
| 41 | |
| 42 self.customContextMenuRequested.connect(self.__contextMenuRequested) | |
| 43 self.itemChanged.connect(self.__itemChanged) | |
| 44 self.__subscription.changed.connect(self.__subscriptionChanged) | |
| 45 self.__subscription.rulesChanged.connect(self.__subscriptionChanged) | |
| 46 | |
| 47 def subscription(self): | |
| 48 """ | |
| 49 Public method to get a reference to the subscription. | |
| 50 | |
| 51 @return reference to the subscription (AdBlockSubscription) | |
| 52 """ | |
| 53 return self.__subscription | |
| 54 | |
| 55 def showRule(self, rule): | |
| 56 """ | |
| 57 Public method to highlight the given rule. | |
| 58 | |
| 59 @param rule AdBlock rule to be shown (AdBlockRule) | |
| 60 """ | |
| 61 if rule: | |
| 62 self.__ruleToBeSelected = rule.filter() | |
| 63 if not self.__topItem: | |
| 64 return | |
| 65 if self.__ruleToBeSelected: | |
| 66 items = self.findItems(self.__ruleToBeSelected, Qt.MatchRecursive) | |
| 67 if items: | |
| 68 item = items[0] | |
| 69 self.setCurrentItem(item) | |
| 70 self.scrollToItem(item, QAbstractItemView.PositionAtCenter) | |
| 71 | |
| 72 self.__ruleToBeSelected = "" | |
| 73 | |
| 74 def refresh(self): | |
| 75 """ | |
| 76 Public method to refresh the tree. | |
| 77 """ | |
| 78 QApplication.setOverrideCursor(Qt.WaitCursor) | |
| 79 self.__itemChangingBlock = True | |
| 80 self.clear() | |
| 81 | |
| 82 boldFont = QFont() | |
| 83 boldFont.setBold(True) | |
| 84 | |
| 85 self.__topItem = QTreeWidgetItem(self) | |
| 86 self.__topItem.setText(0, self.__subscription.title()) | |
| 87 self.__topItem.setFont(0, boldFont) | |
| 88 self.addTopLevelItem(self.__topItem) | |
| 89 | |
| 90 allRules = self.__subscription.allRules() | |
| 91 | |
| 92 index = 0 | |
| 93 for rule in allRules: | |
| 94 item = QTreeWidgetItem(self.__topItem) | |
| 95 item.setText(0, rule.filter()) | |
| 96 item.setData(0, Qt.UserRole, index) | |
| 97 if self.__subscription.canEditRules(): | |
| 98 item.setFlags(item.flags() | Qt.ItemIsEditable) | |
| 99 self.__adjustItemFeatures(item, rule) | |
| 100 index += 1 | |
| 101 | |
| 102 self.expandAll() | |
| 103 self.showRule(None) | |
| 104 self.__itemChangingBlock = False | |
| 105 QApplication.restoreOverrideCursor() | |
| 106 QApplication.processEvents() | |
| 107 | |
| 108 def addRule(self): | |
| 109 """ | |
| 110 Public slot to add a new rule. | |
| 111 """ | |
| 112 if not self.__subscription.canEditRules(): | |
| 113 return | |
| 114 | |
| 115 filter = QInputDialog.getText( | |
| 116 self, | |
| 117 self.trUtf8("Add Custom Rule"), | |
| 118 self.trUtf8("Write your rule here:"), | |
| 119 QLineEdit.Normal) | |
| 120 if filter == "": | |
| 121 return | |
| 122 | |
| 123 rule = AdBlockRule(filter, self.__subscription) | |
| 124 offset = self.__subscription.addRule(rule) | |
| 125 | |
| 126 item = QTreeWidgetItem() | |
| 127 item.setText(0, filter) | |
| 128 item.setData(0, Qt.UserRole, offset) | |
| 129 item.setFlags(item.flags() | Qt.ItemIsEditable) | |
| 130 | |
| 131 self.__itemChangingBlock = True | |
| 132 self.__topItem.addChild(item) | |
| 133 self.__itemChangingBlock = False | |
| 134 | |
| 135 self.__adjustItemFeatures(item, rule) | |
| 136 | |
| 137 def removeRule(self): | |
| 138 """ | |
| 139 Public slot to remove the current rule. | |
| 140 """ | |
| 141 item = self.currentItem() | |
| 142 if item is None or \ | |
| 143 not self.__subscription.canEditRules() or \ | |
| 144 item == self.__topItem: | |
| 145 return | |
| 146 | |
| 147 offset = item.data(0, Qt.UserRole) | |
| 148 self.__subscription.removeRule(offset) | |
| 149 self.deleteItem(item) | |
| 150 | |
| 151 def __contextMenuRequested(self, pos): | |
| 152 """ | |
| 153 Private slot to show the context menu. | |
| 154 | |
| 155 @param pos position for the menu (QPoint) | |
| 156 """ | |
| 157 if not self.__subscription.canEditRules(): | |
| 158 return | |
| 159 | |
| 160 item = self.itemAt(pos) | |
| 161 if item is None: | |
| 162 return | |
| 163 | |
| 164 menu = QMenu() | |
| 165 menu.addAction(self.trUtf8("Add Rule"), self.addRule) | |
| 166 menu.addSeparator() | |
| 167 act = menu.addAction(self.trUtf8("Remove Rule"), self.removeRule) | |
| 168 if item.parent() is None: | |
| 169 act.setDisabled(True) | |
| 170 | |
| 171 menu.exec_(self.viewport().mapToGlobal(pos)) | |
| 172 | |
| 173 def __itemChanged(self, itm): | |
| 174 """ | |
| 175 Private slot to handle the change of an item. | |
| 176 | |
| 177 @param itm changed item (QTreeWidgetItem) | |
| 178 """ | |
| 179 if itm is None or self.__itemChangingBlock: | |
| 180 return | |
| 181 | |
| 182 self.__itemChangingBlock = True | |
| 183 | |
| 184 offset = itm.data(0, Qt.UserRole) | |
| 185 oldRule = self.__subscription.rule(offset) | |
| 186 | |
| 187 if itm.checkState(0) == Qt.Unchecked and oldRule.isEnabled(): | |
| 188 # Disable rule | |
| 189 rule = self.__subscription.setRuleEnabled(offset, False) | |
| 190 self.__adjustItemFeatures(itm, rule) | |
| 191 elif itm.checkState(0) == Qt.Checked and not oldRule.isEnabled(): | |
| 192 # Enable rule | |
| 193 rule = self.__subscription.setRuleEnabled(offset, True) | |
| 194 self.__adjustItemFeatures(itm, rule) | |
| 195 elif self.__subscription.canEditRules(): | |
| 196 # Custom rule has been changed | |
| 197 rule = self.__subscription.replaceRule( | |
| 198 AdBlockRule(itm.text(0), self.__subscription), offset) | |
| 199 self.__adjustItemFeatures(itm, rule) | |
| 200 | |
| 201 self.__itemChangingBlock = False | |
| 202 | |
| 203 def __copyFilter(self): | |
| 204 """ | |
| 205 Private slot to copy the current filter to the clipboard. | |
| 206 """ | |
| 207 item = self.currentItem() | |
| 208 if item is not None: | |
| 209 QApplication.clipboard().setText(item.text(0)) | |
| 210 | |
| 211 def __subscriptionChanged(self): | |
| 212 """ | |
| 213 Private slot handling a subscription change. | |
| 214 """ | |
| 215 self.refresh() | |
| 216 | |
| 217 self.__itemChangingBlock = True | |
| 218 self.__topItem.setText(0, | |
| 219 self.trUtf8("{0} (recently updated)").format(self.__subscription.title())) | |
| 220 self.__itemChangingBlock = False | |
| 221 | |
| 222 def __adjustItemFeatures(self, itm, rule): | |
| 223 """ | |
| 224 Private method to adjust an item. | |
| 225 | |
| 226 @param itm item to be adjusted (QTreeWidgetItem) | |
| 227 @param rule rule for the adjustment (AdBlockRule) | |
| 228 """ | |
| 229 if not rule.isEnabled(): | |
| 230 font = QFont() | |
| 231 font.setItalic(True) | |
| 232 itm.setForeground(0, QColor(Qt.gray)) | |
| 233 | |
| 234 if not rule.isComment(): | |
| 235 itm.setFlags(itm.flags() | Qt.ItemIsUserCheckable) | |
| 236 itm.setCheckState(0, Qt.Unchecked) | |
| 237 itm.setFont(0, font) | |
| 238 | |
| 239 return | |
| 240 | |
| 241 itm.setFlags(itm.flags() | Qt.ItemIsUserCheckable) | |
| 242 itm.setCheckState(0, Qt.Checked) | |
| 243 | |
| 244 if rule.isCSSRule(): | |
| 245 itm.setForeground(0, QColor(Qt.darkBlue)) | |
| 246 itm.setFont(0, QFont()) | |
| 247 elif rule.isException(): | |
| 248 itm.setForeground(0, QColor(Qt.darkGreen)) | |
| 249 itm.setFont(0, QFont()) | |
| 250 else: | |
| 251 itm.setForeground(0, QColor()) | |
| 252 itm.setFont(0, QFont()) | |
| 253 | |
| 254 def keyPressEvent(self, evt): | |
| 255 """ | |
| 256 Protected method handling key presses. | |
| 257 | |
| 258 @param evt key press event (QKeyEvent) | |
| 259 """ | |
| 260 if evt.key() == Qt.Key_C and \ | |
| 261 evt.modifiers() & Qt.ControlModifier: | |
| 262 self.__copyFilter() | |
| 263 elif evt.key() == Qt.Key_Delete: | |
| 264 self.removeRule() | |
| 265 else: | |
| 266 super().keyPressEvent(evt) |
