如何使用Gtk 3.0和WebKit2 4.0处理Python中的链接点击？

Question

I have created my view (wrapped in a window) and loaded an URL like this:

self.web_view = WebKit2.WebView()
self.web_view.load_uri("https://en.wikipedia.org")

My "Mini-Browser" starts and I can click on local links (links which are bound to JavaScript events or links to other pages on the same domain). But when the links point to other domains, nothing happens. How do I catch clicks on external links? Or how can I open these links in the system default browser?

UPDATE: Cross site links are not handled by the "Mini-Browser". Can I write an event hook(onclick) to interrupt the "Mini-Browser" and act based on custom logic or is there a way to configure cross-site links.

Answer 1

Did you use a GtkLinkButton ? According to the doc of gtk-show-uri which uses the default-browser to open links, you additionally need to install the gvfs to get support for uri schemes such as http:// or ftp://

For debian based distributions you can install gvfs just like that:

sudo apt-get install gvfs gvfs-backends gvfs-fuse

If that does not help, you additionally can check the error-message of gtk_show_uri , in case it returns FALSE

For custom-browsers, like yours, according to the doc of GtkLinkButton you need to connect to the activate-link signal and return true from the handler ... probably you already did so.

Answer 2

The GtkLinkButton answer is really off the mark, because this has nothing at all to do with GtkLinkButton and WebKit does not use gvfs to load links.

I don't know why cross-domain links don't work for you. They should work by default. You can control this behavior using the WebKitWebView::decide-policy signal, but the default policy should be to open the link.

You mentioned in your comment that you were having trouble with links with target _blank. Is it possible these were the only cross-domain links that you were testing? That problem is straightforward: WebKit can't open new windows for you automatically, you have to write the code for that. Fortunately it's pretty easy: connect to WebKitWebView::create and follow the documentation there. You basically need to create a new GtkWindow, create a related WebKitWebView, pack the new view into the window, connect to WebKitWebView::ready-to-show on the new view, and show the window when that signal is emitted.