Mercurial Repositories > eric / file comparison
comparison: Helpviewer/HelpSearchWidget.py
Helpviewer/HelpSearchWidget.py
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- de9c2efb9d02
- child 13
- 1af94a91f439
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| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2009 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing a window for showing the QtHelp index. | |
| 8 """ | |
| 9 | |
| 10 from PyQt4.QtCore import * | |
| 11 from PyQt4.QtGui import * | |
| 12 | |
| 13 class HelpSearchWidget(QWidget): | |
| 14 """ | |
| 15 Class implementing a window for showing the QtHelp index. | |
| 16 | |
| 17 @signal linkActivated(const QUrl&) emitted when a search result entry is activated | |
| 18 @signal escapePressed() emitted when the ESC key was pressed | |
| 19 """ | |
| 20 def __init__(self, engine, mainWindow, parent = None): | |
| 21 """ | |
| 22 Constructor | |
| 23 | |
| 24 @param engine reference to the help search engine (QHelpSearchEngine) | |
| 25 @param mainWindow reference to the main window object (QMainWindow) | |
| 26 @param parent reference to the parent widget (QWidget) | |
| 27 """ | |
| 28 QWidget.__init__(self, parent) | |
| 29 | |
| 30 self.__engine = engine | |
| 31 self.__mw = mainWindow | |
| 32 | |
| 33 self.__layout = QVBoxLayout(self) | |
| 34 | |
| 35 self.__result = self.__engine.resultWidget() | |
| 36 self.__query = self.__engine.queryWidget() | |
| 37 | |
| 38 self.__layout.addWidget(self.__query) | |
| 39 self.__layout.addWidget(self.__result) | |
| 40 | |
| 41 self.setFocusProxy(self.__query) | |
| 42 | |
| 43 self.connect(self.__query, SIGNAL("search()"), | |
| 44 self.__search) | |
| 45 self.connect(self.__result, SIGNAL("requestShowLink(const QUrl&)"), | |
| 46 self, SIGNAL("linkActivated(const QUrl&)")) | |
| 47 | |
| 48 self.connect(self.__engine, SIGNAL("searchingStarted()"), | |
| 49 self.__searchingStarted) | |
| 50 self.connect(self.__engine, SIGNAL("searchingFinished(int)"), | |
| 51 self.__searchingFinished) | |
| 52 | |
| 53 self.__browser = self.__result.findChildren(QTextBrowser)[0] | |
| 54 if self.__browser: | |
| 55 self.__browser.viewport().installEventFilter(self) | |
| 56 | |
| 57 def __search(self): | |
| 58 """ | |
| 59 Private slot to perform a search of the database. | |
| 60 """ | |
| 61 query = self.__query.query() | |
| 62 self.__engine.search(query) | |
| 63 | |
| 64 def __searchingStarted(self): | |
| 65 """ | |
| 66 Private slot to handle the start of a search. | |
| 67 """ | |
| 68 QApplication.setOverrideCursor(Qt.WaitCursor) | |
| 69 | |
| 70 def __searchingFinished(self, hits): | |
| 71 """ | |
| 72 Private slot to handle the end of the search. | |
| 73 | |
| 74 @param hits number of hits (integer) (unused) | |
| 75 """ | |
| 76 QApplication.restoreOverrideCursor() | |
| 77 | |
| 78 def eventFilter(self, watched, event): | |
| 79 """ | |
| 80 Public method called to filter the event queue. | |
| 81 | |
| 82 @param watched the QObject being watched (QObject) | |
| 83 @param event the event that occurred (QEvent) | |
| 84 @return flag indicating whether the event was handled (boolean) | |
| 85 """ | |
| 86 if self.__browser and watched == self.__browser.viewport() and \ | |
| 87 event.type() == QEvent.MouseButtonRelease: | |
| 88 link = self.__result.linkAt(event.pos()) | |
| 89 if not link.isEmpty() and link.isValid(): | |
| 90 ctrl = event.modifiers() & Qt.ControlModifier | |
| 91 if (event.button() == Qt.LeftButton and ctrl) or \ | |
| 92 event.button() == Qt.MidButton: | |
| 93 self.__mw.newTab(link) | |
| 94 | |
| 95 return QWidget.eventFilter(self, watched, event) | |
| 96 | |
| 97 def keyPressEvent(self, evt): | |
| 98 """ | |
| 99 Protected method handling key press events. | |
| 100 | |
| 101 @param evt reference to the key press event (QKeyEvent) | |
| 102 """ | |
| 103 if evt.key() == Qt.Key_Escape: | |
| 104 self.emit(SIGNAL("escapePressed()")) | |
| 105 else: | |
| 106 evt.ignore() | |
| 107 | |
| 108 def contextMenuEvent(self, evt): | |
| 109 """ | |
| 110 Protected method handling context menu events. | |
| 111 | |
| 112 @param evt reference to the context menu event (QContextMenuEvent) | |
| 113 """ | |
| 114 point = evt.globalPos() | |
| 115 | |
| 116 if self.__browser: | |
| 117 point = self.__browser.mapFromGlobal(point) | |
| 118 if not self.__browser.rect().contains(point, True): | |
| 119 return | |
| 120 link = QUrl(self.__browser.anchorAt(point)) | |
| 121 else: | |
| 122 point = self.__result.mapFromGlobal(point) | |
| 123 link = self.__result.linkAt(point) | |
| 124 | |
| 125 if link.isEmpty() or not link.isValid(): | |
| 126 return | |
| 127 | |
| 128 menu = QMenu() | |
| 129 curTab = menu.addAction(self.trUtf8("Open Link")) | |
| 130 newTab = menu.addAction(self.trUtf8("Open Link in New Tab")) | |
| 131 menu.move(evt.globalPos()) | |
| 132 act = menu.exec_() | |
| 133 if act == curTab: | |
| 134 self.emit(SIGNAL("linkActivated(const QUrl&)"), link) | |
| 135 elif act == newTab: | |
| 136 self.__mw.newTab(link) |
