def view_html(self):
'''
view the displayed html in plain text
'''
html = self.browser.page().currentFrame().toHtml()
text_browser = QtGui.QTextEdit()
text_browser.setReadOnly(True)
text_browser.setFont(QtGui.QFont("courier", 10))
text_browser.setLineWrapMode(QtGui.QTextEdit.NoWrap)
text_browser.setPlainText(html)
dl = BaseDialog(self, remove_stretch=True)
dl.setWindowTitle("html source view")
dl.insertWidget(text_browser)
dl.setMinimumWidth(600)
dl.cancel_but.hide()
dl.set_accept_button_text(_("Ok"))
dl.enableApply()
dl.exec_()
