Add Right-click Menu With Open Link in New Tab

[MichaelMcDonnell]

When I read Hacker News in Firefox I open new tabs for the most interesting stories. I do this by right-clicking the links and clicking the Open Link in New Tab option in the popup menu. I would like to have that feature in Servo.

For now I've have been holding down Ctrl and left clicking the links, which opens them in a new tab.

[jdm]

This is a useful feature to experiment with, since it requires some subtle interactions with the embedding API. Does web content receive a right mouse click event first? Can we content prevent the context menu from appearing? How do we know if we're right clicking on a link vs. some other content like an image element? Ultimately the embedder like servoshell will be responsible for showing an appropriate menu at the right location.

[abdelrahman1234567]

Apparently, fn maybe_show_context_menu is already implemented in document.rs and being handled to be triggered by a right mouse click. However, as i am testing it now, the context menu isn't showing in any situation which is pretty weird. I will try to have a deeper look and see if I can reach smth.

[webbeef]

The page content should get the contextmenu event first, and get the opportunity to call preventDefault on it. If it doesn't, then the embedder should receive an event with all the details required to build the context menu.

[abdelrahman1234567]

From what I noticed, the contextmenu event is being sent from document.rs, until it reaches webview_delegate.rs and then it reaches the function show_context_menu which is i guess doesn't do anything (aka. not implemented yet :`D)

[yezhizhen]

I am recommending @abdelrahman1234567 to work on this one after discussing offline. Cheers!

[arihant2math]

I've started work on this.