Mercurial Repositories > eric / file comparison
comparison: eric6/Helpviewer/SearchWidget.py
eric6/Helpviewer/SearchWidget.py
- changeset 6942
- 2602857055c5
- parent 6645
- ad476851d7e0
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| 6941:f99d60d6b59b | 6942:2602857055c5 |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2009 - 2019 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing the search bar for the web browser. | |
| 8 """ | |
| 9 | |
| 10 from __future__ import unicode_literals | |
| 11 | |
| 12 from PyQt5.QtCore import pyqtSlot, Qt | |
| 13 from PyQt5.QtGui import QPalette, QBrush, QColor | |
| 14 from PyQt5.QtWidgets import QWidget | |
| 15 from PyQt5.QtWebKitWidgets import QWebPage | |
| 16 | |
| 17 from .Ui_SearchWidget import Ui_SearchWidget | |
| 18 | |
| 19 import UI.PixmapCache | |
| 20 | |
| 21 | |
| 22 class SearchWidget(QWidget, Ui_SearchWidget): | |
| 23 """ | |
| 24 Class implementing the search bar for the web browser. | |
| 25 """ | |
| 26 def __init__(self, mainWindow, parent=None): | |
| 27 """ | |
| 28 Constructor | |
| 29 | |
| 30 @param mainWindow reference to the main window (QMainWindow) | |
| 31 @param parent parent widget of this dialog (QWidget) | |
| 32 """ | |
| 33 super(SearchWidget, self).__init__(parent) | |
| 34 self.setupUi(self) | |
| 35 | |
| 36 self.__mainWindow = mainWindow | |
| 37 | |
| 38 self.wrapCheckBox.setChecked(True) | |
| 39 self.closeButton.setIcon(UI.PixmapCache.getIcon("close.png")) | |
| 40 self.findPrevButton.setIcon(UI.PixmapCache.getIcon("1leftarrow.png")) | |
| 41 self.findNextButton.setIcon(UI.PixmapCache.getIcon("1rightarrow.png")) | |
| 42 | |
| 43 self.__defaultBaseColor = \ | |
| 44 self.findtextCombo.lineEdit().palette().color(QPalette.Base) | |
| 45 self.__defaultTextColor = \ | |
| 46 self.findtextCombo.lineEdit().palette().color(QPalette.Text) | |
| 47 | |
| 48 self.findHistory = [] | |
| 49 self.havefound = False | |
| 50 self.__findBackwards = False | |
| 51 | |
| 52 self.findtextCombo.setCompleter(None) | |
| 53 self.findtextCombo.lineEdit().returnPressed.connect( | |
| 54 self.__findByReturnPressed) | |
| 55 self.findtextCombo.lineEdit().textEdited.connect( | |
| 56 self.__searchTextEdited) | |
| 57 | |
| 58 if hasattr(QWebPage, "HighlightAllOccurrences"): | |
| 59 self.highlightAllCheckBox.setChecked(True) | |
| 60 else: | |
| 61 self.highlightAllCheckBox.setVisible(False) | |
| 62 | |
| 63 def on_findtextCombo_editTextChanged(self, txt): | |
| 64 """ | |
| 65 Private slot to enable/disable the find buttons. | |
| 66 | |
| 67 @param txt text of the combobox (string) | |
| 68 """ | |
| 69 self.findPrevButton.setEnabled(txt != "") | |
| 70 self.findNextButton.setEnabled(txt != "") | |
| 71 | |
| 72 def __searchTextEdited(self, txt): | |
| 73 """ | |
| 74 Private slot to perform an incremental search. | |
| 75 | |
| 76 @param txt current text of the search combos line edit (string) | |
| 77 (unused) | |
| 78 """ | |
| 79 self.on_highlightAllCheckBox_toggled(True) | |
| 80 self.__findNextPrev() | |
| 81 | |
| 82 def __findNextPrev(self): | |
| 83 """ | |
| 84 Private slot to find the next occurrence of text. | |
| 85 """ | |
| 86 self.infoLabel.clear() | |
| 87 self.__setFindtextComboBackground(False) | |
| 88 | |
| 89 if not self.findtextCombo.currentText(): | |
| 90 return | |
| 91 | |
| 92 if not self.__mainWindow.currentBrowser().findNextPrev( | |
| 93 self.findtextCombo.currentText(), | |
| 94 self.caseCheckBox.isChecked(), | |
| 95 self.__findBackwards, | |
| 96 self.wrapCheckBox.isChecked(), | |
| 97 False): | |
| 98 self.infoLabel.setText(self.tr("Expression was not found.")) | |
| 99 self.__setFindtextComboBackground(True) | |
| 100 | |
| 101 @pyqtSlot(bool) | |
| 102 def on_highlightAllCheckBox_toggled(self, checked): | |
| 103 """ | |
| 104 Private slot to toggle the highlight of all occurrences. | |
| 105 | |
| 106 @param checked flag indicating the check box toggle state (boolean) | |
| 107 """ | |
| 108 cbr = self.__mainWindow.currentBrowser() | |
| 109 if cbr is None: | |
| 110 return | |
| 111 cbr.findNextPrev( | |
| 112 "", False, False, False, True) | |
| 113 if self.highlightAllCheckBox.isChecked(): | |
| 114 cbr.findNextPrev( | |
| 115 self.findtextCombo.currentText(), | |
| 116 self.caseCheckBox.isChecked(), | |
| 117 False, False, True) | |
| 118 | |
| 119 @pyqtSlot() | |
| 120 def on_findNextButton_clicked(self): | |
| 121 """ | |
| 122 Private slot to find the next occurrence. | |
| 123 """ | |
| 124 txt = self.findtextCombo.currentText() | |
| 125 | |
| 126 # This moves any previous occurrence of this statement to the head | |
| 127 # of the list and updates the combobox | |
| 128 if txt in self.findHistory: | |
| 129 self.findHistory.remove(txt) | |
| 130 self.findHistory.insert(0, txt) | |
| 131 self.findtextCombo.clear() | |
| 132 self.findtextCombo.addItems(self.findHistory) | |
| 133 | |
| 134 self.__findBackwards = False | |
| 135 self.__findNextPrev() | |
| 136 | |
| 137 def findNext(self): | |
| 138 """ | |
| 139 Public slot to find the next occurrence. | |
| 140 """ | |
| 141 if not self.havefound or not self.findtextCombo.currentText(): | |
| 142 self.showFind() | |
| 143 return | |
| 144 | |
| 145 self.on_findNextButton_clicked() | |
| 146 | |
| 147 @pyqtSlot() | |
| 148 def on_findPrevButton_clicked(self): | |
| 149 """ | |
| 150 Private slot to find the previous occurrence. | |
| 151 """ | |
| 152 txt = self.findtextCombo.currentText() | |
| 153 | |
| 154 # This moves any previous occurrence of this statement to the head | |
| 155 # of the list and updates the combobox | |
| 156 if txt in self.findHistory: | |
| 157 self.findHistory.remove(txt) | |
| 158 self.findHistory.insert(0, txt) | |
| 159 self.findtextCombo.clear() | |
| 160 self.findtextCombo.addItems(self.findHistory) | |
| 161 | |
| 162 self.__findBackwards = True | |
| 163 self.__findNextPrev() | |
| 164 | |
| 165 def findPrevious(self): | |
| 166 """ | |
| 167 Public slot to find the previous occurrence. | |
| 168 """ | |
| 169 if not self.havefound or not self.findtextCombo.currentText(): | |
| 170 self.showFind() | |
| 171 return | |
| 172 | |
| 173 self.on_findPrevButton_clicked() | |
| 174 | |
| 175 def __findByReturnPressed(self): | |
| 176 """ | |
| 177 Private slot to handle the returnPressed signal of the findtext | |
| 178 combobox. | |
| 179 """ | |
| 180 if self.__findBackwards: | |
| 181 self.on_findPrevButton_clicked() | |
| 182 else: | |
| 183 self.on_findNextButton_clicked() | |
| 184 | |
| 185 def showFind(self): | |
| 186 """ | |
| 187 Public method to display this dialog. | |
| 188 """ | |
| 189 self.havefound = True | |
| 190 self.__findBackwards = False | |
| 191 | |
| 192 self.findtextCombo.clear() | |
| 193 self.findtextCombo.addItems(self.findHistory) | |
| 194 self.findtextCombo.setEditText('') | |
| 195 self.findtextCombo.setFocus() | |
| 196 | |
| 197 self.caseCheckBox.setChecked(False) | |
| 198 | |
| 199 if self.__mainWindow.currentBrowser().hasSelection(): | |
| 200 self.findtextCombo.setEditText( | |
| 201 self.__mainWindow.currentBrowser().selectedText()) | |
| 202 | |
| 203 self.__setFindtextComboBackground(False) | |
| 204 self.show() | |
| 205 | |
| 206 @pyqtSlot() | |
| 207 def on_closeButton_clicked(self): | |
| 208 """ | |
| 209 Private slot to close the widget. | |
| 210 """ | |
| 211 self.close() | |
| 212 | |
| 213 def keyPressEvent(self, event): | |
| 214 """ | |
| 215 Protected slot to handle key press events. | |
| 216 | |
| 217 @param event reference to the key press event (QKeyEvent) | |
| 218 """ | |
| 219 if event.key() == Qt.Key_Escape: | |
| 220 cb = self.__mainWindow.currentBrowser() | |
| 221 if cb: | |
| 222 cb.setFocus(Qt.ActiveWindowFocusReason) | |
| 223 event.accept() | |
| 224 self.close() | |
| 225 | |
| 226 def __setFindtextComboBackground(self, error): | |
| 227 """ | |
| 228 Private slot to change the findtext combo background to indicate | |
| 229 errors. | |
| 230 | |
| 231 @param error flag indicating an error condition (boolean) | |
| 232 """ | |
| 233 le = self.findtextCombo.lineEdit() | |
| 234 p = le.palette() | |
| 235 if error: | |
| 236 p.setBrush(QPalette.Base, QBrush(QColor("#FF6666"))) | |
| 237 p.setBrush(QPalette.Text, QBrush(QColor("#000000"))) | |
| 238 else: | |
| 239 p.setBrush(QPalette.Base, self.__defaultBaseColor) | |
| 240 p.setBrush(QPalette.Text, self.__defaultTextColor) | |
| 241 le.setPalette(p) | |
| 242 le.update() |
