Helpviewer/HelpIndexWidget.py

Sun, 03 Nov 2013 15:58:22 +0100

author
T.Rzepka <Tobias.Rzepka@gmail.com>
date
Sun, 03 Nov 2013 15:58:22 +0100
branch
Py2 comp.
changeset 3060
5883ce99ee12
parent 3057
10516539f238
parent 3035
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child 3145
a9de05d4a22f
permissions
-rw-r--r--

Merge with default branch after fixed indentation issues and lates changes.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2009 - 2013 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 window for showing the QtHelp index.
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8 """
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9
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10 from __future__ import unicode_literals # __IGNORE_WARNING__
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11
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12 from PyQt4.QtCore import pyqtSignal, Qt, QUrl, QEvent
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13 from PyQt4.QtGui import QWidget, QVBoxLayout, QLabel, QLineEdit, QMenu, QDialog
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15
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16 class HelpIndexWidget(QWidget):
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17 """
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18 Class implementing a window for showing the QtHelp index.
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19
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20 @signal linkActivated(QUrl) emitted when an index entry is activated
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21 @signal linksActivated(links, keyword) emitted when an index entry
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22 referencing multiple targets is activated
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23 @signal escapePressed() emitted when the ESC key was pressed
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24 """
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25 linkActivated = pyqtSignal(QUrl)
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26 linksActivated = pyqtSignal(dict, str)
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27 escapePressed = pyqtSignal()
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28
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29 def __init__(self, engine, mainWindow, parent=None):
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30 """
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31 Constructor
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32
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33 @param engine reference to the help engine (QHelpEngine)
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34 @param mainWindow reference to the main window object (QMainWindow)
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35 @param parent reference to the parent widget (QWidget)
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36 """
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37 super(HelpIndexWidget, self).__init__(parent)
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38
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39 self.__engine = engine
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40 self.__mw = mainWindow
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41
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42 self.__searchEdit = None
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43 self.__index = None
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44
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45 self.__layout = QVBoxLayout(self)
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46 label = QLabel(self.trUtf8("&Look for:"))
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47 self.__layout.addWidget(label)
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48
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49 self.__searchEdit = QLineEdit()
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50 label.setBuddy(self.__searchEdit)
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51 self.__searchEdit.textChanged.connect(self.__filterIndices)
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52 self.__searchEdit.installEventFilter(self)
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53 self.__layout.addWidget(self.__searchEdit)
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54
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55 self.__index = self.__engine.indexWidget()
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56 self.__index.installEventFilter(self)
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57 self.__engine.indexModel().indexCreationStarted.connect(
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58 self.__disableSearchEdit)
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59 self.__engine.indexModel().indexCreated.connect(
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60 self.__enableSearchEdit)
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61 self.__index.activated.connect(self.__activated)
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62 self.__searchEdit.returnPressed.connect(
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63 self.__index.activateCurrentItem)
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64 self.__layout.addWidget(self.__index)
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65
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66 self.__index.viewport().installEventFilter(self)
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67
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68 def __activated(self, idx):
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69 """
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70 Private slot to handle the activation of a keyword entry.
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71
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72 @param idx index of the activated entry (QModelIndex)
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73 """
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74 model = self.__index.model()
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75 if model is not None:
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76 keyword = model.data(idx, Qt.DisplayRole)
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77 links = model.linksForKeyword(keyword)
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78 if len(links) == 1:
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79 self.linkActivated.emit(QUrl(links[list(links.keys())[0]]))
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80 else:
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81 self.linksActivated.emit(links, keyword)
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82
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83 def __filterIndices(self, filter):
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84 """
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85 Private slot to filter the indices according to the given filter.
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86
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87 @param filter filter to be used (string)
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88 """
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89 if '*' in filter:
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90 self.__index.filterIndices(filter, filter)
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91 else:
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92 self.__index.filterIndices(filter)
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93
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94 def __enableSearchEdit(self):
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95 """
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96 Private slot to enable the search edit.
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97 """
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98 self.__searchEdit.setEnabled(True)
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99 self.__filterIndices(self.__searchEdit.text())
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100
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101 def __disableSearchEdit(self):
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102 """
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103 Private slot to enable the search edit.
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104 """
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105 self.__searchEdit.setEnabled(False)
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106
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107 def focusInEvent(self, evt):
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108 """
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109 Protected method handling focus in events.
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110
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111 @param evt reference to the focus event object (QFocusEvent)
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112 """
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113 if evt.reason() != Qt.MouseFocusReason:
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114 self.__searchEdit.selectAll()
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115 self.__searchEdit.setFocus()
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116
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117 def eventFilter(self, watched, event):
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118 """
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119 Public method called to filter the event queue.
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120
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121 @param watched the QObject being watched (QObject)
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122 @param event the event that occurred (QEvent)
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123 @return flag indicating whether the event was handled (boolean)
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124 """
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125 if self.__searchEdit and watched == self.__searchEdit and \
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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126 event.type() == QEvent.KeyPress:
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Detlev Offenbach <detlev@die-offenbachs.de>
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127 idx = self.__index.currentIndex()
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parents:
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128 if event.key() == Qt.Key_Up:
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129 idx = self.__index.model().index(
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130 idx.row() - 1, idx.column(), idx.parent())
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131 if idx.isValid():
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132 self.__index.setCurrentIndex(idx)
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parents:
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133 elif event.key() == Qt.Key_Down:
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parents:
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134 idx = self.__index.model().index(
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parents:
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135 idx.row() + 1, idx.column(), idx.parent())
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parents:
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136 if idx.isValid():
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parents:
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137 self.__index.setCurrentIndex(idx)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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138 elif event.key() == Qt.Key_Escape:
487
4d41d03d3d00 Continued porting signal/slot usage to the new API.
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parents: 482
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139 self.escapePressed.emit()
0
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140 elif self.__index and watched == self.__index and \
3035
36e9f388958b Fixed a bunch of indentation issues.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 3034
diff changeset
141 event.type() == QEvent.ContextMenu:
0
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142 idx = self.__index.indexAt(event.pos())
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parents:
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143 if idx.isValid():
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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144 menu = QMenu()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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145 curTab = menu.addAction(self.trUtf8("Open Link"))
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parents:
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146 newTab = menu.addAction(self.trUtf8("Open Link in New Tab"))
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parents:
diff changeset
147 menu.move(self.__index.mapToGlobal(event.pos()))
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148
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149 act = menu.exec_()
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150 if act == curTab:
113
33afff70d8ee Implemented a workaround for a Qt/PyQt issue causing the eric web browser to crash, when some entry of the index widget is activated.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 13
diff changeset
151 self.__activated(idx)
0
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parents:
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152 elif act == newTab:
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153 model = self.__index.model()
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parents:
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154 if model is not None:
7
c679fb30c8f3 Change code dealing with QVariant (and QSettings) to use the PyQt4 QVariant v2 API.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 0
diff changeset
155 keyword = model.data(idx, Qt.DisplayRole)
0
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156 links = model.linksForKeyword(keyword)
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parents:
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157 if len(links) == 1:
12
1d8dd9706f46 First commit after changing to Python 3.1.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 7
diff changeset
158 self.__mw.newTab(list(links.values())[0])
0
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parents:
diff changeset
159 elif len(links) > 1:
2403
e3d7a861547c Continued implementing the delayed import.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2302
diff changeset
160 from .HelpTopicDialog import HelpTopicDialog
0
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parents:
diff changeset
161 dlg = HelpTopicDialog(self, keyword, links)
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parents:
diff changeset
162 if dlg.exec_() == QDialog.Accepted:
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parents:
diff changeset
163 self.__mw.newTab(dlg.link())
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parents:
diff changeset
164 elif self.__index and watched == self.__index.viewport() and \
3035
36e9f388958b Fixed a bunch of indentation issues.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 3034
diff changeset
165 event.type() == QEvent.MouseButtonRelease:
0
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
166 idx = self.__index.indexAt(event.pos())
de9c2efb9d02 Started porting eric4 to Python3
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parents:
diff changeset
167 if idx.isValid() and event.button() == Qt.MidButton:
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
168 model = self.__index.model()
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
169 if model is not None:
7
c679fb30c8f3 Change code dealing with QVariant (and QSettings) to use the PyQt4 QVariant v2 API.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 0
diff changeset
170 keyword = model.data(idx, Qt.DisplayRole)
0
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
171 links = model.linksForKeyword(keyword)
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
172 if len(links) == 1:
12
1d8dd9706f46 First commit after changing to Python 3.1.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 7
diff changeset
173 self.__mw.newTab(list(links.values())[0])
0
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
174 elif len(links) > 1:
2403
e3d7a861547c Continued implementing the delayed import.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2302
diff changeset
175 from .HelpTopicDialog import HelpTopicDialog
0
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
176 dlg = HelpTopicDialog(self, keyword, links)
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
177 if dlg.exec_() == QDialog.Accepted:
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
178 self.__mw.newTab(dlg.link())
de9c2efb9d02 Started porting eric4 to Python3
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parents:
diff changeset
179
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
180 return QWidget.eventFilter(self, watched, event)

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