WebKitGTK Hello World

browser.py

#!/usr/bin/env python3

from urllib.parse import urlparse
import gi

gi.require_version("Gtk", "3.0")
gi.require_version("WebKit2", "4.0")
from gi.repository import Gtk
from gi.repository import WebKit2


class MyWindow(Gtk.Window):
    def __init__(self):
        super().__init__(title="Hello World")
        self.resize(width=800, height=600)
        self.current_url = self.home_url = "https://www.google.com.br"

        self.address_bar = Gtk.Box(
            orientation=Gtk.Orientation.HORIZONTAL, homogeneous=False, spacing=2
        )

        home_button = Gtk.Button.new_from_icon_name(
            icon_name="go-home", size=Gtk.IconSize.LARGE_TOOLBAR
        )
        home_button.connect("clicked", self.on_home_button_clicked)
        self.address_bar.pack_start(
            home_button, expand=False, fill=False, padding=1
        )

        self.location_entry = Gtk.Entry(text=self.current_url)
        self.location_entry.connect("activate", self.on_entry_activated)
        self.address_bar.pack_end(
            self.location_entry, expand=True, fill=True, padding=1
        )

        self.vbox = Gtk.Box(
            orientation=Gtk.Orientation.VERTICAL, homogeneous=False, spacing=1
        )

        self.status_bar = Gtk.Statusbar()
        self.status_bar.show()

        self.status_context_id = self.status_bar.get_context_id("Something")

        self.view = WebKit2.WebView()
        self.view.load_uri(self.current_url)
        self.view.connect("mouse-target-changed", self.mouse_target_changed)
        self.view.connect("load-changed", self.load_changed)
        self.hover_target = ""

        self.vbox.pack_start(self.address_bar, expand=False, fill=False, padding=1)
        self.vbox.pack_start(self.view, expand=True, fill=True, padding=1)
        self.vbox.pack_end(self.status_bar, expand=False, fill=False, padding=1)
        self.add(self.vbox)

    def on_entry_activated(self, _widget):
        url = self.location_entry.get_text()
        parsed = urlparse(url, scheme="http")
        self.view.load_uri(parsed.geturl())

    def on_home_button_clicked(self, _widget):
        self.view.load_uri(self.home_url)

    def load_changed(self, _widget, load_event):
        print(load_event)
        if load_event == WebKit2.LoadEvent.STARTED:
            self.current_url = self.view.get_uri()
            self.set_status("Waiting for " + self.current_url + "...")
            self.location_entry.set_text(self.current_url)
        elif load_event == WebKit2.LoadEvent.REDIRECTED:
            pass
        elif load_event == WebKit2.LoadEvent.COMMITTED:
            self.current_url = self.view.get_uri()
            self.set_status("Transferring from " + self.current_url + "...")
            self.location_entry.set_text(self.current_url)
        elif load_event == WebKit2.LoadEvent.FINISHED:
            self.set_status("Done.")

    def mouse_target_changed(self, _widget, hit_test_result, modifiers):
        link_uri = hit_test_result.get_link_uri() or ""
        if link_uri != self.hover_target:
            self.hover_target = link_uri
            self.set_status(link_uri)

    def set_status(self, text):
        self.status_bar.remove_all(self.status_context_id)
        self.status_bar.push(self.status_context_id, text)


win = MyWindow()
win.connect("destroy", Gtk.main_quit)
win.show_all()
Gtk.main()