xwidget-custom.el

;; Trial test!
;; Based on post https://www.reddit.com/r/emacs/comments/4srze9/watching_youtube_inside_emacs_25/
;; make these keys behave like normal browser
(define-key xwidget-webkit-mode-map [mouse-4] 'xwidget-webkit-scroll-down)
(define-key xwidget-webkit-mode-map [mouse-5] 'xwidget-webkit-scroll-up)
(define-key xwidget-webkit-mode-map (kbd "<up>") 'xwidget-webkit-scroll-down)
(define-key xwidget-webkit-mode-map (kbd "<down>") 'xwidget-webkit-scroll-up)
(define-key xwidget-webkit-mode-map (kbd "M-w") 'xwidget-webkit-copy-selection-as-kill)
(define-key xwidget-webkit-mode-map (kbd "C-c") 'xwidget-webkit-copy-selection-as-kill)

;; adapt webkit according to window configuration chagne automatically
;; without this hook, every time you change your window configuration,
;; you must press 'a' to adapt webkit content to new window size
(add-hook 'window-configuration-change-hook (lambda ()
			   (when (equal major-mode 'xwidget-webkit-mode)
			     (xwidget-webkit-adjust-size-dispatch))))

;; by default, xwidget reuses previous xwidget window,
;; thus overriding your current website, unless a prefix argument
;; is supplied
;;
;; This function always opens a new website in a new window
(defun xwidget-browse-url-no-reuse (url &optional sessoin)
  (interactive (progn
                 (require 'browse-url)
                 (browse-url-interactive-arg "xwidget-webkit URL: "
                                             )))
  (xwidget-webkit-browse-url url t))

;; make xwidget default browser
(setq browse-url-browser-function (lambda (url session)
				    (other-window 1)
				    (xwidget-browse-url-no-reuse url)))