--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebBrowser/SearchWidget.py Mon Feb 01 20:03:22 2016 +0100
@@ -0,0 +1,242 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2009 - 2016 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing the search bar for the web browser.
+"""
+
+from __future__ import unicode_literals
+
+from PyQt5.QtCore import pyqtSlot, Qt
+from PyQt5.QtGui import QPalette, QBrush, QColor
+from PyQt5.QtWidgets import QWidget
+##from PyQt5.QtWebKitWidgets import QWebPage
+
+from .Ui_SearchWidget import Ui_SearchWidget
+
+import UI.PixmapCache
+
+
+class SearchWidget(QWidget, Ui_SearchWidget):
+ """
+ Class implementing the search bar for the web browser.
+ """
+ def __init__(self, mainWindow, parent=None):
+ """
+ Constructor
+
+ @param mainWindow reference to the main window (QMainWindow)
+ @param parent parent widget of this dialog (QWidget)
+ """
+ super(SearchWidget, self).__init__(parent)
+ self.setupUi(self)
+
+ self.__mainWindow = mainWindow
+
+ # TODO: Check what Qt 5.6 can offer (maybe using JavaScript)
+ self.wrapCheckBox.setVisible(False)
+ self.highlightAllCheckBox.setVisible(False)
+## self.wrapCheckBox.setChecked(True)
+ self.closeButton.setIcon(UI.PixmapCache.getIcon("close.png"))
+ self.findPrevButton.setIcon(UI.PixmapCache.getIcon("1leftarrow.png"))
+ self.findNextButton.setIcon(UI.PixmapCache.getIcon("1rightarrow.png"))
+
+ self.__defaultBaseColor = \
+ self.findtextCombo.lineEdit().palette().color(QPalette.Base)
+ self.__defaultTextColor = \
+ self.findtextCombo.lineEdit().palette().color(QPalette.Text)
+
+ self.__findHistory = []
+ self.__havefound = False
+ self.__findBackwards = False
+
+ self.findtextCombo.setCompleter(None)
+ self.findtextCombo.lineEdit().returnPressed.connect(
+ self.__findByReturnPressed)
+ self.findtextCombo.lineEdit().textEdited.connect(
+ self.__searchTextEdited)
+
+ def on_findtextCombo_editTextChanged(self, txt):
+ """
+ Private slot to enable/disable the find buttons.
+
+ @param txt text of the combobox (string)
+ """
+ self.findPrevButton.setEnabled(txt != "")
+ self.findNextButton.setEnabled(txt != "")
+
+ def __searchTextEdited(self, txt):
+ """
+ Private slot to perform an incremental search.
+
+ @param txt current text of the search combos line edit (string)
+ (unused)
+ """
+ self.on_highlightAllCheckBox_toggled(True)
+ self.__findNextPrev()
+
+ def __findNextPrev(self):
+ """
+ Private slot to find the next occurrence of text.
+ """
+ self.infoLabel.clear()
+ self.__setFindtextComboBackground(False)
+
+ if not self.findtextCombo.currentText():
+ return
+
+ # TODO: adjust this to the browser API
+ # TODO: use the callback interface of QWebEnginePage
+ if not self.__mainWindow.currentBrowser().findNextPrev(
+ self.findtextCombo.currentText(),
+ self.caseCheckBox.isChecked(),
+ self.__findBackwards,
+ self.wrapCheckBox.isChecked(),
+ False):
+ self.infoLabel.setText(self.tr("Expression was not found."))
+ self.__setFindtextComboBackground(True)
+##
+## @pyqtSlot(bool)
+## def on_highlightAllCheckBox_toggled(self, checked):
+## """
+## Private slot to toggle the highlight of all occurrences.
+##
+## @param checked flag indicating the check box toggle state (boolean)
+## """
+## cbr = self.__mainWindow.currentBrowser()
+## if cbr is None:
+## return
+## cbr.findNextPrev(
+## "", False, False, False, True)
+## if self.highlightAllCheckBox.isChecked():
+## cbr.findNextPrev(
+## self.findtextCombo.currentText(),
+## self.caseCheckBox.isChecked(),
+## False, False, True)
+
+ @pyqtSlot()
+ def on_findNextButton_clicked(self):
+ """
+ Private slot to find the next occurrence.
+ """
+ txt = self.findtextCombo.currentText()
+
+ # This moves any previous occurrence of this statement to the head
+ # of the list and updates the combobox
+ if txt in self.__findHistory:
+ self.__findHistory.remove(txt)
+ self.__findHistory.insert(0, txt)
+ self.findtextCombo.clear()
+ self.findtextCombo.addItems(self.__findHistory)
+
+ self.__findBackwards = False
+ self.__findNextPrev()
+
+ def findNext(self):
+ """
+ Public slot to find the next occurrence.
+ """
+ if not self.__havefound or not self.findtextCombo.currentText():
+ self.showFind()
+ return
+
+ self.on_findNextButton_clicked()
+
+ @pyqtSlot()
+ def on_findPrevButton_clicked(self):
+ """
+ Private slot to find the previous occurrence.
+ """
+ txt = self.findtextCombo.currentText()
+
+ # This moves any previous occurrence of this statement to the head
+ # of the list and updates the combobox
+ if txt in self.__findHistory:
+ self.__findHistory.remove(txt)
+ self.__findHistory.insert(0, txt)
+ self.findtextCombo.clear()
+ self.findtextCombo.addItems(self.__findHistory)
+
+ self.__findBackwards = True
+ self.__findNextPrev()
+
+ def findPrevious(self):
+ """
+ Public slot to find the previous occurrence.
+ """
+ if not self.__havefound or not self.findtextCombo.currentText():
+ self.showFind()
+ return
+
+ self.on_findPrevButton_clicked()
+
+ def __findByReturnPressed(self):
+ """
+ Private slot to handle the returnPressed signal of the findtext
+ combobox.
+ """
+ if self.__findBackwards:
+ self.on_findPrevButton_clicked()
+ else:
+ self.on_findNextButton_clicked()
+
+ def showFind(self):
+ """
+ Public method to display this dialog.
+ """
+ self.__havefound = True
+ self.__findBackwards = False
+
+ self.findtextCombo.clear()
+ self.findtextCombo.addItems(self.__findHistory)
+ self.findtextCombo.setEditText('')
+ self.findtextCombo.setFocus()
+
+ self.caseCheckBox.setChecked(False)
+
+ if self.__mainWindow.currentBrowser().hasSelection():
+ self.findtextCombo.setEditText(
+ self.__mainWindow.currentBrowser().selectedText())
+
+ self.__setFindtextComboBackground(False)
+ self.show()
+
+ @pyqtSlot()
+ def on_closeButton_clicked(self):
+ """
+ Private slot to close the widget.
+ """
+ self.close()
+
+ def keyPressEvent(self, event):
+ """
+ Protected slot to handle key press events.
+
+ @param event reference to the key press event (QKeyEvent)
+ """
+ if event.key() == Qt.Key_Escape:
+ cb = self.__mainWindow.currentBrowser()
+ if cb:
+ cb.setFocus(Qt.ActiveWindowFocusReason)
+ event.accept()
+ self.close()
+
+ def __setFindtextComboBackground(self, error):
+ """
+ Private slot to change the findtext combo background to indicate
+ errors.
+
+ @param error flag indicating an error condition (boolean)
+ """
+ le = self.findtextCombo.lineEdit()
+ p = le.palette()
+ if error:
+ p.setBrush(QPalette.Base, QBrush(QColor("#FF6666")))
+ p.setBrush(QPalette.Text, QBrush(QColor("#000000")))
+ else:
+ p.setBrush(QPalette.Base, self.__defaultBaseColor)
+ p.setBrush(QPalette.Text, self.__defaultTextColor)
+ le.setPalette(p)
+ le.update()
