Mastering GUI Programming with Python

Building a text search feature

So far, we've loaded and displayed content in our web view widget, but we haven't really done much with the actual content. One of the powerful features that we get with QtWebEngine is the ability to manipulate the contents of web pages by injecting our own JavaScript code into those pages. To see how this works, we're going to use the following instructions to develop a text search feature that will highlight all instances of a search term:

1. We'll start by adding the GUI components to MainWindow.__init__():

        find_dock = qtw.QDockWidget('Search')        self.addDockWidget(qtc.Qt.BottomDockWidgetArea, find_dock)        self.find_text = qtw.QLineEdit()        find_dock.setWidget(self.find_text) self.find_text.textChanged.connect(self.text_search) ...