eric6/WebBrowser/QtHelp/HelpSearchWidget.py

Sat, 10 Apr 2021 18:38:27 +0200

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sat, 10 Apr 2021 18:38:27 +0200
changeset 8218
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parent 8143
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permissions
-rw-r--r--

Applied some more code simplifications suggested by the new Simplify checker (super(Foo, self) => super()).

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2009 - 2021 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 PyQt5.QtCore import pyqtSignal, pyqtSlot, Qt, QUrl
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11 from PyQt5.QtWidgets import (
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12 QWidget, QVBoxLayout, QTextBrowser, QApplication, QMenu
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13 )
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14
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15
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16 class HelpSearchWidget(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 escapePressed() emitted when the ESC key was pressed
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21 @signal openUrl(QUrl, str) emitted to open a search result entry in the
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22 current tab
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23 @signal newTab(QUrl, str) emitted to open a search result entry in a
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24 new tab
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25 @signal newBackgroundTab(QUrl, str) emitted to open a search result entry
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26 in a new background tab
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27 @signal newWindow(QUrl, str) emitted to open a search result entry in a
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28 new window
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29 """
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30 escapePressed = pyqtSignal()
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31 openUrl = pyqtSignal(QUrl)
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32 newTab = pyqtSignal(QUrl)
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33 newBackgroundTab = pyqtSignal(QUrl)
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34 newWindow = pyqtSignal(QUrl)
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35
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36 def __init__(self, engine, parent=None):
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37 """
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38 Constructor
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39
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40 @param engine reference to the help search engine (QHelpSearchEngine)
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41 @param parent reference to the parent widget (QWidget)
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42 """
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43 super().__init__(parent)
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44
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45 self.__engine = engine
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46
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47 self.__layout = QVBoxLayout(self)
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48
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49 self.__result = self.__engine.resultWidget()
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50 self.__query = self.__engine.queryWidget()
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51
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52 self.__layout.addWidget(self.__query)
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53 self.__layout.addWidget(self.__result)
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54
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55 self.setFocusProxy(self.__query)
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56
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57 self.__query.search.connect(self.__search)
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58 self.__result.requestShowLink.connect(self.__linkActivated)
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59
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60 self.__engine.searchingStarted.connect(self.__searchingStarted)
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61 self.__engine.searchingFinished.connect(self.__searchingFinished)
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62
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63 self.__browser = self.__result.findChildren(QTextBrowser)[0]
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64
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65 def __search(self):
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66 """
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67 Private slot to perform a search of the database.
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68 """
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69 query = self.__query.query()
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70 self.__engine.search(query)
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71
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72 def __searchingStarted(self):
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73 """
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74 Private slot to handle the start of a search.
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75 """
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76 QApplication.setOverrideCursor(Qt.CursorShape.WaitCursor)
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77
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78 def __searchingFinished(self, hits):
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79 """
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80 Private slot to handle the end of the search.
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81
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82 @param hits number of hits (integer) (unused)
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83 """
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84 QApplication.restoreOverrideCursor()
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85
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86 @pyqtSlot(QUrl)
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87 def __linkActivated(self, url):
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88 """
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89 Private slot handling the activation of an entry.
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90
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91 @param url URL of the activated entry
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92 @type QUrl
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93 """
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94 if not url.isEmpty() and url.isValid():
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95 buttons = QApplication.mouseButtons()
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96 modifiers = QApplication.keyboardModifiers()
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97
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98 if buttons & Qt.MouseButton.MidButton:
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99 self.newTab.emit(url)
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100 else:
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101 if (
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102 modifiers & (
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103 Qt.KeyboardModifier.ControlModifier |
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104 Qt.KeyboardModifier.ShiftModifier
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105 ) == (
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106 Qt.KeyboardModifier.ControlModifier |
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107 Qt.KeyboardModifier.ShiftModifier
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108 )
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109 ):
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110 self.newBackgroundTab.emit(url)
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111 elif modifiers & Qt.KeyboardModifier.ControlModifier:
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112 self.newTab.emit(url)
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113 elif modifiers & Qt.KeyboardModifier.ShiftModifier:
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114 self.newWindow.emit(url)
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115 else:
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116 self.openUrl.emit(url)
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117
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118 def keyPressEvent(self, evt):
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119 """
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120 Protected method handling key press events.
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121
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122 @param evt reference to the key press event (QKeyEvent)
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123 """
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124 if evt.key() == Qt.Key.Key_Escape:
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125 self.escapePressed.emit()
0
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126 else:
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127 evt.ignore()
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128
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129 def contextMenuEvent(self, evt):
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130 """
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131 Protected method handling context menu events.
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132
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133 @param evt reference to the context menu event (QContextMenuEvent)
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134 """
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135 point = evt.globalPos()
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136
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137 if self.__browser:
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138 point = self.__browser.mapFromGlobal(point)
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139 if not self.__browser.rect().contains(point, True):
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140 return
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141 link = QUrl(self.__browser.anchorAt(point))
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142 else:
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143 point = self.__result.mapFromGlobal(point)
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144 link = self.__result.linkAt(point)
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145
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146 if link.isEmpty() or not link.isValid():
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147 return
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148
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149 menu = QMenu()
3190
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150 curTab = menu.addAction(self.tr("Open Link"))
a9a94491c4fd Changed the code to use QObject.tr() instead of QObject.trUtf8().
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parents: 3160
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151 newTab = menu.addAction(self.tr("Open Link in New Tab"))
5038
df7103c3f2a6 Added capabilities to open links in a new background tab, and several other link open actions to various context menus of the new web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4875
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152 newBackgroundTab = menu.addAction(
df7103c3f2a6 Added capabilities to open links in a new background tab, and several other link open actions to various context menus of the new web browser.
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parents: 4875
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153 self.tr("Open Link in Background Tab"))
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parents: 4875
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154 newWindow = menu.addAction(self.tr("Open Link in New Window"))
0
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155 menu.move(evt.globalPos())
7759
51aa6c6b66f7 Changed calls to exec_() into exec() (remainder of Python2 elimination).
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parents: 7360
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156 act = menu.exec()
0
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157 if act == curTab:
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df7103c3f2a6 Added capabilities to open links in a new background tab, and several other link open actions to various context menus of the new web browser.
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parents: 4875
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158 self.openUrl.emit(link)
0
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159 elif act == newTab:
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df7103c3f2a6 Added capabilities to open links in a new background tab, and several other link open actions to various context menus of the new web browser.
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parents: 4875
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160 self.newTab.emit(link)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4875
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161 elif act == newBackgroundTab:
df7103c3f2a6 Added capabilities to open links in a new background tab, and several other link open actions to various context menus of the new web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4875
diff changeset
162 self.newBackgroundTab.emit(link)
df7103c3f2a6 Added capabilities to open links in a new background tab, and several other link open actions to various context menus of the new web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4875
diff changeset
163 elif act == newWindow:
df7103c3f2a6 Added capabilities to open links in a new background tab, and several other link open actions to various context menus of the new web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4875
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164 self.newWindow.emit(link)

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