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9e1af8251f
Co-authored-by: Jaesup Kwak <veshboo@gmail.com> * etc/NEWS: Announce new functions and options. * lisp/xwidget.el (xwidget): New defgroup. (xwidget-webkit-mode-map): Add new keybindings. (xwidget-webkit-scroll-up, xwidget-webkit-scroll-down) (xwidget-webkit-scroll-forward, xwidget-webkit-scroll-backward): Add optional argument to specify specific amounts to scroll down. (xwidget-webkit-scroll-up-line, xwidget-webkit-scroll-down-line): New functions. (xwidget-webkit-scroll-bottom): Fix function to scroll to the bottom of the document. (xwidget-webkit-callback): Use new function to update buffer title even when Javascript is disabled. (xwidget-webkit-bookmark-jump-new-session): New variable. (xwidget-webkit-bookmark-make-record): Modify to use xwidget-webkit to open bookmark that is created in xwidget-webkit. (xwidget-webkit-insert-string): Fix Javascript snippet to not throw Javsscript exceptions. (xwidget-webkit-inside-pixel-width) (xwidget-window-inside-pixel-height): New functions. (xwidget-webkit-adjust-size-to-window): Use new functions. (xwidget-webkit-new-session): Insert invisible URL instead of an empty string to achieve better default behavior. (xwidget-webkit-back, xwidget-webkit-forward, xwidget-webkit-reload) (xwidget-webkit-current-url): Use new functions to enable scrolling even when Javascript is disabled. (xwidget-webkit-copy-selection-as-kill): Remove unnecessary lambda. * src/nsxwidget.h src/nsxwidget.m (nsxwidget_webkit_uri) (nsxwidget_webkit_title, nsxwidget_webkit_goto_history): Add new functions. * src/xwidget.c (Fxwidget_webkit_uri, Fxwidget_webkit_title) (Fxwidget_webkit_goto_history): Add new functions. (syms_of_xwidget): Define new functions.
690 lines
26 KiB
EmacsLisp
690 lines
26 KiB
EmacsLisp
;;; xwidget.el --- api functions for xwidgets -*- lexical-binding: t -*-
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;;
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;; Copyright (C) 2011-2020 Free Software Foundation, Inc.
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;;
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;; Author: Joakim Verona (joakim@verona.se)
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;;
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;; This file is part of GNU Emacs.
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;;
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;
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;; --------------------------------------------------------------------
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;;; Commentary:
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;;
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;; See xwidget.c for more api functions.
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;; This breaks compilation when we don't have xwidgets.
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;; And is pointless when we do, since it's in C and so preloaded.
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;;(require 'xwidget-internal)
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;;; Code:
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(require 'cl-lib)
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(require 'bookmark)
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(declare-function make-xwidget "xwidget.c"
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(type title width height arguments &optional buffer))
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(declare-function xwidget-buffer "xwidget.c" (xwidget))
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(declare-function xwidget-size-request "xwidget.c" (xwidget))
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(declare-function xwidget-resize "xwidget.c" (xwidget new-width new-height))
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(declare-function xwidget-webkit-execute-script "xwidget.c"
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(xwidget script &optional callback))
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(declare-function xwidget-webkit-uri "xwidget.c" (xwidget))
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(declare-function xwidget-webkit-title "xwidget.c" (xwidget))
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(declare-function xwidget-webkit-goto-uri "xwidget.c" (xwidget uri))
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(declare-function xwidget-webkit-goto-history "xwidget.c" (xwidget rel-pos))
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(declare-function xwidget-webkit-zoom "xwidget.c" (xwidget factor))
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(declare-function xwidget-plist "xwidget.c" (xwidget))
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(declare-function set-xwidget-plist "xwidget.c" (xwidget plist))
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(declare-function xwidget-view-window "xwidget.c" (xwidget-view))
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(declare-function xwidget-view-model "xwidget.c" (xwidget-view))
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(declare-function delete-xwidget-view "xwidget.c" (xwidget-view))
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(declare-function get-buffer-xwidgets "xwidget.c" (buffer))
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(declare-function xwidget-query-on-exit-flag "xwidget.c" (xwidget))
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(defgroup xwidget nil
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"Displaying native widgets in Emacs buffers."
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:group 'widgets)
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(defun xwidget-insert (pos type title width height &optional args)
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"Insert an xwidget at position POS.
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Supply the xwidget's TYPE, TITLE, WIDTH, and HEIGHT.
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See `make-xwidget' for the possible TYPE values.
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The usage of optional argument ARGS depends on the xwidget.
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This returns the result of `make-xwidget'."
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(goto-char pos)
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(let ((id (make-xwidget type title width height args)))
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(put-text-property (point) (+ 1 (point))
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'display (list 'xwidget ':xwidget id))
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id))
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(defun xwidget-at (pos)
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"Return xwidget at POS."
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;; TODO this function is a bit tedious because the C layer isn't well
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;; protected yet and xwidgetp apparently doesn't work yet.
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(let* ((disp (get-text-property pos 'display))
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(xw (car (cdr (cdr disp)))))
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;;(if (xwidgetp xw) xw nil)
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(if (equal 'xwidget (car disp)) xw)))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;; webkit support
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(require 'browse-url)
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(require 'image-mode);;for some image-mode alike functionality
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(require 'seq)
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(require 'url-handlers)
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;;;###autoload
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(defun xwidget-webkit-browse-url (url &optional new-session)
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"Ask xwidget-webkit to browse URL.
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NEW-SESSION specifies whether to create a new xwidget-webkit session.
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Interactively, URL defaults to the string looking like a url around point."
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(interactive (progn
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(require 'browse-url)
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(browse-url-interactive-arg "xwidget-webkit URL: "
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;;(xwidget-webkit-current-url)
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)))
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(or (featurep 'xwidget-internal)
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(user-error "Your Emacs was not compiled with xwidgets support"))
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(when (stringp url)
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;; If it's a "naked url", just try adding https: to it.
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(unless (string-match "\\`[A-Za-z]+:" url)
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(setq url (concat "https://" url)))
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(if new-session
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(xwidget-webkit-new-session url)
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(xwidget-webkit-goto-url url))))
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(defun xwidget-webkit-clone-and-split-below ()
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"Clone current URL into a new widget place in new window below.
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Get the URL of current session, then browse to the URL
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in `split-window-below' with a new xwidget webkit session."
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(interactive)
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(let ((url (xwidget-webkit-current-url)))
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(with-selected-window (split-window-below)
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(xwidget-webkit-new-session url))))
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(defun xwidget-webkit-clone-and-split-right ()
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"Clone current URL into a new widget place in new window right.
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Get the URL of current session, then browse to the URL
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in `split-window-right' with a new xwidget webkit session."
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(interactive)
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(let ((url (xwidget-webkit-current-url)))
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(with-selected-window (split-window-right)
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(xwidget-webkit-new-session url))))
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;;todo.
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;; - check that the webkit support is compiled in
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(defvar xwidget-webkit-mode-map
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(let ((map (make-sparse-keymap)))
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(define-key map "g" 'xwidget-webkit-browse-url)
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(define-key map "a" 'xwidget-webkit-adjust-size-dispatch)
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(define-key map "b" 'xwidget-webkit-back)
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(define-key map "f" 'xwidget-webkit-forward)
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(define-key map "r" 'xwidget-webkit-reload)
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(define-key map "t" (lambda () (interactive) (message "o"))) ;FIXME: ?!?
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(define-key map "\C-m" 'xwidget-webkit-insert-string)
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(define-key map "w" 'xwidget-webkit-current-url)
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(define-key map "+" 'xwidget-webkit-zoom-in)
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(define-key map "-" 'xwidget-webkit-zoom-out)
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;;similar to image mode bindings
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(define-key map (kbd "SPC") 'xwidget-webkit-scroll-up)
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(define-key map (kbd "S-SPC") 'xwidget-webkit-scroll-down)
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(define-key map (kbd "DEL") 'xwidget-webkit-scroll-down)
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(define-key map [remap scroll-up] 'xwidget-webkit-scroll-up-line)
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(define-key map [remap scroll-up-command] 'xwidget-webkit-scroll-up)
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(define-key map [remap scroll-down] 'xwidget-webkit-scroll-down-line)
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(define-key map [remap scroll-down-command] 'xwidget-webkit-scroll-down)
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(define-key map [remap forward-char] 'xwidget-webkit-scroll-forward)
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(define-key map [remap backward-char] 'xwidget-webkit-scroll-backward)
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(define-key map [remap right-char] 'xwidget-webkit-scroll-forward)
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(define-key map [remap left-char] 'xwidget-webkit-scroll-backward)
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(define-key map [remap previous-line] 'xwidget-webkit-scroll-down-line)
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(define-key map [remap next-line] 'xwidget-webkit-scroll-up-line)
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;; (define-key map [remap move-beginning-of-line] 'image-bol)
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;; (define-key map [remap move-end-of-line] 'image-eol)
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(define-key map [remap beginning-of-buffer] 'xwidget-webkit-scroll-top)
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(define-key map [remap end-of-buffer] 'xwidget-webkit-scroll-bottom)
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map)
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"Keymap for `xwidget-webkit-mode'.")
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(defun xwidget-webkit-zoom-in ()
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"Increase webkit view zoom factor."
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(interactive)
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(xwidget-webkit-zoom (xwidget-webkit-current-session) 0.1))
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(defun xwidget-webkit-zoom-out ()
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"Decrease webkit view zoom factor."
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(interactive)
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(xwidget-webkit-zoom (xwidget-webkit-current-session) -0.1))
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(defun xwidget-webkit-scroll-up (&optional arg)
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"Scroll webkit up by ARG pixels; or full window height if no ARG.
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Stop if bottom of page is reached.
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Interactively, ARG is the prefix numeric argument.
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Negative ARG scrolls down."
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(interactive "P")
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(xwidget-webkit-execute-script
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(xwidget-webkit-current-session)
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(format "window.scrollBy(0, %d);"
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(or arg (xwidget-window-inside-pixel-height (selected-window))))))
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(defun xwidget-webkit-scroll-down (&optional arg)
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"Scroll webkit down by ARG pixels; or full window height if no ARG.
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Stop if top of page is reached.
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Interactively, ARG is the prefix numeric argument.
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Negative ARG scrolls up."
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(interactive "P")
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(xwidget-webkit-execute-script
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(xwidget-webkit-current-session)
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(format "window.scrollBy(0, -%d);"
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(or arg (xwidget-window-inside-pixel-height (selected-window))))))
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(defun xwidget-webkit-scroll-up-line (&optional n)
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"Scroll webkit up by N lines.
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The height of line is calculated with `window-font-height'.
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Stop if the bottom edge of the page is reached.
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If N is omitted or nil, scroll up by one line."
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(interactive "p")
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(xwidget-webkit-scroll-up (* n (window-font-height))))
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(defun xwidget-webkit-scroll-down-line (&optional n)
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"Scroll webkit down by N lines.
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The height of line is calculated with `window-font-height'.
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Stop if the top edge of the page is reached.
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If N is omitted or nil, scroll down by one line."
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(interactive "p")
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(xwidget-webkit-scroll-down (* n (window-font-height))))
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(defun xwidget-webkit-scroll-forward (&optional n)
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"Scroll webkit horizontally by N chars.
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The width of char is calculated with `window-font-width'.
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If N is ommited or nil, scroll forwards by one char."
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(interactive "p")
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(xwidget-webkit-execute-script
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(xwidget-webkit-current-session)
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(format "window.scrollBy(%d, 0);"
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(* n (window-font-width)))))
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(defun xwidget-webkit-scroll-backward (&optional n)
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"Scroll webkit back by N chars.
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The width of char is calculated with `window-font-width'.
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If N is ommited or nil, scroll backwards by one char."
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(interactive "p")
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(xwidget-webkit-execute-script
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(xwidget-webkit-current-session)
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(format "window.scrollBy(-%d, 0);"
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(* n (window-font-width)))))
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(defun xwidget-webkit-scroll-top ()
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"Scroll webkit to the very top."
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(interactive)
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(xwidget-webkit-execute-script
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(xwidget-webkit-current-session)
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"window.scrollTo(pageXOffset, 0);"))
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(defun xwidget-webkit-scroll-bottom ()
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"Scroll webkit to the very bottom."
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(interactive)
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(xwidget-webkit-execute-script
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(xwidget-webkit-current-session)
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"window.scrollTo(pageXOffset, window.document.body.scrollHeight);"))
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;; The xwidget event needs to go into a higher level handler
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;; since the xwidget can generate an event even if it's offscreen.
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;; TODO this needs to use callbacks and consider different xwidget event types.
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(define-key (current-global-map) [xwidget-event] #'xwidget-event-handler)
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(defun xwidget-log (&rest msg)
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"Log MSG to a buffer."
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(let ((buf (get-buffer-create " *xwidget-log*")))
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(with-current-buffer buf
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(insert (apply #'format msg))
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(insert "\n"))))
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(defun xwidget-event-handler ()
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"Receive xwidget event."
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(interactive)
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(xwidget-log "stuff happened to xwidget %S" last-input-event)
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(let*
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((xwidget-event-type (nth 1 last-input-event))
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(xwidget (nth 2 last-input-event))
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(xwidget-callback (xwidget-get xwidget 'callback)))
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(funcall xwidget-callback xwidget xwidget-event-type)))
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(defun xwidget-webkit-callback (xwidget xwidget-event-type)
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"Callback for xwidgets.
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XWIDGET instance, XWIDGET-EVENT-TYPE depends on the originating xwidget."
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(if (not (buffer-live-p (xwidget-buffer xwidget)))
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(xwidget-log
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"error: callback called for xwidget with dead buffer")
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(with-current-buffer (xwidget-buffer xwidget)
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(cond ((eq xwidget-event-type 'load-changed)
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(let ((title (xwidget-webkit-title xwidget)))
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(xwidget-log "webkit finished loading: %s" title)
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;; Do not adjust webkit size to window here, the selected window
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;; can be the mini-buffer window unwantedly.
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(rename-buffer (format "*xwidget webkit: %s *" title) t)))
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((eq xwidget-event-type 'decide-policy)
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(let ((strarg (nth 3 last-input-event)))
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(if (string-match ".*#\\(.*\\)" strarg)
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(xwidget-webkit-show-id-or-named-element
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xwidget
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(match-string 1 strarg)))))
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((eq xwidget-event-type 'javascript-callback)
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(let ((proc (nth 3 last-input-event))
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(arg (nth 4 last-input-event)))
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(funcall proc arg)))
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(t (xwidget-log "unhandled event:%s" xwidget-event-type))))))
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(defvar bookmark-make-record-function)
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(when (memq window-system '(mac ns))
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(defvar xwidget-webkit-enable-plugins nil
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"Enable plugins for xwidget webkit.
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If non-nil, plugins are enabled. Otherwise, disabled."))
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(define-derived-mode xwidget-webkit-mode
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special-mode "xwidget-webkit" "Xwidget webkit view mode."
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(setq buffer-read-only t)
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(setq-local bookmark-make-record-function
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#'xwidget-webkit-bookmark-make-record)
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;; Keep track of [vh]scroll when switching buffers
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(image-mode-setup-winprops))
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;;; Bookmarks integration
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(defcustom xwidget-webkit-bookmark-jump-new-session nil
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"Control bookmark jump to use new session or not.
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If non-nil, use a new xwidget webkit session after bookmark jump.
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Otherwise, it will use `xwidget-webkit-last-session'.
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When you set this variable to nil, consider further customization with
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`xwidget-webkit-last-session-buffer'."
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:version "27.1"
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:type 'boolean)
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(defun xwidget-webkit-bookmark-make-record ()
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"Create bookmark record in webkit xwidget."
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(nconc (bookmark-make-record-default t t)
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`((page . ,(xwidget-webkit-uri (xwidget-webkit-current-session)))
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(handler . (lambda (bmk)
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(xwidget-webkit-browse-url
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(bookmark-prop-get bmk 'page)
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xwidget-webkit-bookmark-jump-new-session))))))
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;;; xwidget webkit session
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(defvar xwidget-webkit-last-session-buffer nil)
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(defun xwidget-webkit-last-session ()
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"Last active webkit, or nil."
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(if (buffer-live-p xwidget-webkit-last-session-buffer)
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(with-current-buffer xwidget-webkit-last-session-buffer
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(xwidget-at (point-min)))
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nil))
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(defun xwidget-webkit-current-session ()
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"Either the webkit in the current buffer, or the last one used.
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The latter might be nil."
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(or (xwidget-at (point-min)) (xwidget-webkit-last-session)))
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(defun xwidget-adjust-size-to-content (xw)
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"Resize XW to content."
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;; xwidgets doesn't support widgets that have their own opinions about
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;; size well, yet this reads the desired size and resizes the Emacs
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;; allocated area accordingly.
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(let ((size (xwidget-size-request xw)))
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(xwidget-resize xw (car size) (cadr size))))
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(defvar xwidget-webkit-activeelement-js"
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function findactiveelement(doc){
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//alert(doc.activeElement.value);
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if(doc.activeElement.value != undefined){
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return doc.activeElement;
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}else{
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// recurse over the child documents:
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var frames = doc.getElementsByTagName('frame');
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for (var i = 0; i < frames.length; i++)
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{
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var d = frames[i].contentDocument;
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var rv = findactiveelement(d);
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if(rv != undefined){
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return rv;
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}
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}
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}
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return undefined;
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};
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"
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"Javascript that finds the active element."
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;; Yes it's ugly, because:
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;; - there is apparently no way to find the active frame other than recursion
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;; - the js "for each" construct misbehaved on the "frames" collection
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;; - a window with no frameset still has frames.length == 1, but
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;; frames[0].document.activeElement != document.activeElement
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;;TODO the activeelement type needs to be examined, for iframe, etc.
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)
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(defun xwidget-webkit-insert-string ()
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"Insert string into the active field in the current webkit widget."
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;; Read out the string in the field first and provide for edit.
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(interactive)
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;; As the prompt differs on JavaScript execution results,
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;; the function must handle the prompt itself.
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(let ((xww (xwidget-webkit-current-session)))
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(xwidget-webkit-execute-script
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xww
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(concat xwidget-webkit-activeelement-js "
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(function () {
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var res = findactiveelement(document);
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if (res)
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return [res.value, res.type];
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})();")
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(lambda (field)
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"Prompt a string for the FIELD and insert in the active input."
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(let ((str (pcase field
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(`[,val "text"]
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(read-string "Text: " val))
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(`[,val "password"]
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(read-passwd "Password: " nil val))
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(`[,val "textarea"]
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|
(xwidget-webkit-begin-edit-textarea xww val)))))
|
|
(xwidget-webkit-execute-script
|
|
xww
|
|
(format "findactiveelement(document).value='%s'" str)))))))
|
|
|
|
(defvar xwidget-xwbl)
|
|
(defun xwidget-webkit-begin-edit-textarea (xw text)
|
|
"Start editing of a webkit text area.
|
|
XW is the xwidget identifier, TEXT is retrieved from the webkit."
|
|
(switch-to-buffer
|
|
(generate-new-buffer "textarea"))
|
|
(set (make-local-variable 'xwidget-xwbl) xw)
|
|
(insert text))
|
|
|
|
(defun xwidget-webkit-end-edit-textarea ()
|
|
"End editing of a webkit text area."
|
|
(interactive)
|
|
(goto-char (point-min))
|
|
(while (search-forward "\n" nil t)
|
|
(replace-match "\\n" nil t))
|
|
(xwidget-webkit-execute-script
|
|
xwidget-xwbl
|
|
(format "findactiveelement(document).value='%s'"
|
|
(buffer-substring (point-min) (point-max))))
|
|
;;TODO convert linefeed to \n
|
|
)
|
|
|
|
(defun xwidget-webkit-show-element (xw element-selector)
|
|
"Make webkit xwidget XW show a named element ELEMENT-SELECTOR.
|
|
The ELEMENT-SELECTOR must be a valid CSS selector. For example,
|
|
use this to display an anchor."
|
|
(interactive (list (xwidget-webkit-current-session)
|
|
(read-string "Element selector: ")))
|
|
(xwidget-webkit-execute-script
|
|
xw
|
|
(format "
|
|
(function (query) {
|
|
var el = document.querySelector(query);
|
|
if (el !== null) {
|
|
window.scrollTo(0, el.offsetTop);
|
|
}
|
|
})('%s');"
|
|
element-selector)))
|
|
|
|
(defun xwidget-webkit-show-named-element (xw element-name)
|
|
"Make webkit xwidget XW show a named element ELEMENT-NAME.
|
|
For example, use this to display an anchor."
|
|
(interactive (list (xwidget-webkit-current-session)
|
|
(read-string "Element name: ")))
|
|
;; TODO: This needs to be interfaced into browse-url somehow. The
|
|
;; tricky part is that we need to do this in two steps: A: load the
|
|
;; base url, wait for load signal to arrive B: navigate to the
|
|
;; anchor when the base url is finished rendering
|
|
(xwidget-webkit-execute-script
|
|
xw
|
|
(format "
|
|
(function (query) {
|
|
var el = document.getElementsByName(query)[0];
|
|
if (el !== undefined) {
|
|
window.scrollTo(0, el.offsetTop);
|
|
}
|
|
})('%s');"
|
|
element-name)))
|
|
|
|
(defun xwidget-webkit-show-id-element (xw element-id)
|
|
"Make webkit xwidget XW show an id-element ELEMENT-ID.
|
|
For example, use this to display an anchor."
|
|
(interactive (list (xwidget-webkit-current-session)
|
|
(read-string "Element id: ")))
|
|
(xwidget-webkit-execute-script
|
|
xw
|
|
(format "
|
|
(function (query) {
|
|
var el = document.getElementById(query);
|
|
if (el !== null) {
|
|
window.scrollTo(0, el.offsetTop);
|
|
}
|
|
})('%s');"
|
|
element-id)))
|
|
|
|
(defun xwidget-webkit-show-id-or-named-element (xw element-id)
|
|
"Make webkit xwidget XW show a name or element id ELEMENT-ID.
|
|
For example, use this to display an anchor."
|
|
(interactive (list (xwidget-webkit-current-session)
|
|
(read-string "Name or element id: ")))
|
|
(xwidget-webkit-execute-script
|
|
xw
|
|
(format "
|
|
(function (query) {
|
|
var el = document.getElementById(query) ||
|
|
document.getElementsByName(query)[0];
|
|
if (el !== undefined) {
|
|
window.scrollTo(0, el.offsetTop);
|
|
}
|
|
})('%s');"
|
|
element-id)))
|
|
|
|
(defun xwidget-webkit-adjust-size-to-content ()
|
|
"Adjust webkit to content size."
|
|
(interactive)
|
|
(xwidget-adjust-size-to-content (xwidget-webkit-current-session)))
|
|
|
|
(defun xwidget-webkit-adjust-size-dispatch ()
|
|
"Adjust size according to mode."
|
|
(interactive)
|
|
(xwidget-webkit-adjust-size-to-window (xwidget-webkit-current-session))
|
|
;; The recenter is intended to correct a visual glitch.
|
|
;; It errors out if the buffer isn't visible, but then we don't get
|
|
;; the glitch, so silence errors.
|
|
(ignore-errors
|
|
(recenter-top-bottom)))
|
|
|
|
;; Utility functions
|
|
|
|
(defun xwidget-window-inside-pixel-width (window)
|
|
"Return Emacs WINDOW body width in pixel."
|
|
(let ((edges (window-inside-pixel-edges window)))
|
|
(- (nth 2 edges) (nth 0 edges))))
|
|
|
|
(defun xwidget-window-inside-pixel-height (window)
|
|
"Return Emacs WINDOW body height in pixel."
|
|
(let ((edges (window-inside-pixel-edges window)))
|
|
(- (nth 3 edges) (nth 1 edges))))
|
|
|
|
(defun xwidget-webkit-adjust-size-to-window (xwidget &optional window)
|
|
"Adjust the size of the webkit XWIDGET to fit the WINDOW."
|
|
(xwidget-resize xwidget
|
|
(xwidget-window-inside-pixel-width window)
|
|
(xwidget-window-inside-pixel-height window)))
|
|
|
|
(defun xwidget-webkit-adjust-size (w h)
|
|
"Manually set webkit size to width W, height H."
|
|
;; TODO shouldn't be tied to the webkit xwidget
|
|
(interactive "nWidth:\nnHeight:\n")
|
|
(xwidget-resize (xwidget-webkit-current-session) w h))
|
|
|
|
(defun xwidget-webkit-fit-width ()
|
|
"Adjust width of webkit to window width."
|
|
(interactive)
|
|
(xwidget-webkit-adjust-size (- (nth 2 (window-inside-pixel-edges))
|
|
(car (window-inside-pixel-edges)))
|
|
1000))
|
|
|
|
(defun xwidget-webkit-auto-adjust-size (window)
|
|
"Adjust the size of the webkit widget in the given WINDOW."
|
|
(with-current-buffer (window-buffer window)
|
|
(when (eq major-mode 'xwidget-webkit-mode)
|
|
(let ((xwidget (xwidget-webkit-current-session)))
|
|
(xwidget-webkit-adjust-size-to-window xwidget window)))))
|
|
|
|
(defun xwidget-webkit-adjust-size-in-frame (frame)
|
|
"Dynamically adjust webkit widget for all windows of the FRAME."
|
|
(walk-windows 'xwidget-webkit-auto-adjust-size 'no-minibuf frame))
|
|
|
|
(eval-after-load 'xwidget-webkit-mode
|
|
(add-to-list 'window-size-change-functions
|
|
'xwidget-webkit-adjust-size-in-frame))
|
|
|
|
(defun xwidget-webkit-new-session (url &optional callback)
|
|
"Create a new webkit session buffer with URL."
|
|
(let*
|
|
((bufname (generate-new-buffer-name "*xwidget-webkit*"))
|
|
(callback (or callback #'xwidget-webkit-callback))
|
|
xw)
|
|
(setq xwidget-webkit-last-session-buffer (switch-to-buffer
|
|
(get-buffer-create bufname)))
|
|
;; The xwidget id is stored in a text property, so we need to have
|
|
;; at least character in this buffer.
|
|
;; Insert invisible url, good default for next `g' to browse url.
|
|
(let ((start (point)))
|
|
(insert url)
|
|
(put-text-property start (+ start (length url)) 'invisible t)
|
|
(setq xw (xwidget-insert
|
|
start 'webkit bufname
|
|
(xwidget-window-inside-pixel-width (selected-window))
|
|
(xwidget-window-inside-pixel-height (selected-window)))))
|
|
(xwidget-put xw 'callback callback)
|
|
(xwidget-webkit-mode)
|
|
(xwidget-webkit-goto-uri (xwidget-webkit-last-session) url)))
|
|
|
|
|
|
(defun xwidget-webkit-goto-url (url)
|
|
"Goto URL with xwidget webkit."
|
|
(if (xwidget-webkit-current-session)
|
|
(progn
|
|
(xwidget-webkit-goto-uri (xwidget-webkit-current-session) url))
|
|
(xwidget-webkit-new-session url)))
|
|
|
|
(defun xwidget-webkit-back ()
|
|
"Go back to previous URL in xwidget webkit buffer."
|
|
(interactive)
|
|
(xwidget-webkit-goto-history (xwidget-webkit-current-session) -1))
|
|
|
|
(defun xwidget-webkit-forward ()
|
|
"Go forward in history."
|
|
(interactive)
|
|
(xwidget-webkit-goto-history (xwidget-webkit-current-session) 1))
|
|
|
|
(defun xwidget-webkit-reload ()
|
|
"Reload current URL."
|
|
(interactive)
|
|
(xwidget-webkit-goto-history (xwidget-webkit-current-session) 0))
|
|
|
|
(defun xwidget-webkit-current-url ()
|
|
"Display the current xwidget webkit URL and place it on the `kill-ring'."
|
|
(interactive)
|
|
(let ((url (xwidget-webkit-uri (xwidget-webkit-current-session))))
|
|
(message "URL: %s" (kill-new (or url "")))))
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
(defun xwidget-webkit-get-selection (proc)
|
|
"Get the webkit selection and pass it to PROC."
|
|
(xwidget-webkit-execute-script
|
|
(xwidget-webkit-current-session)
|
|
"window.getSelection().toString();"
|
|
proc))
|
|
|
|
(defun xwidget-webkit-copy-selection-as-kill ()
|
|
"Get the webkit selection and put it on the `kill-ring'."
|
|
(interactive)
|
|
(xwidget-webkit-get-selection #'kill-new))
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; Xwidget plist management (similar to the process plist functions)
|
|
|
|
(defun xwidget-get (xwidget propname)
|
|
"Get an xwidget's property value.
|
|
XWIDGET is an xwidget, PROPNAME a property.
|
|
Returns the last value stored with `xwidget-put'."
|
|
(plist-get (xwidget-plist xwidget) propname))
|
|
|
|
(defun xwidget-put (xwidget propname value)
|
|
"Set an xwidget's property value.
|
|
XWIDGET is an xwidget, PROPNAME a property to be set to specified VALUE.
|
|
You can retrieve the value with `xwidget-get'."
|
|
(set-xwidget-plist xwidget
|
|
(plist-put (xwidget-plist xwidget) propname value)))
|
|
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
(defvar xwidget-view-list) ; xwidget.c
|
|
(defvar xwidget-list) ; xwidget.c
|
|
|
|
(defun xwidget-delete-zombies ()
|
|
"Helper for `xwidget-cleanup'."
|
|
(dolist (xwidget-view xwidget-view-list)
|
|
(when (or (not (window-live-p (xwidget-view-window xwidget-view)))
|
|
(not (memq (xwidget-view-model xwidget-view)
|
|
xwidget-list)))
|
|
(delete-xwidget-view xwidget-view))))
|
|
|
|
(defun xwidget-cleanup ()
|
|
"Delete zombie xwidgets."
|
|
;; During development it was sometimes easy to wind up with zombie
|
|
;; xwidget instances.
|
|
;; This function tries to implement a workaround should it occur again.
|
|
(interactive)
|
|
;; Kill xviews that should have been deleted but still linger.
|
|
(xwidget-delete-zombies)
|
|
;; Redraw display otherwise ghost of zombies will remain to haunt the screen
|
|
(redraw-display))
|
|
|
|
(defun xwidget-kill-buffer-query-function ()
|
|
"Ask before killing a buffer that has xwidgets."
|
|
(let ((xwidgets (get-buffer-xwidgets (current-buffer))))
|
|
(or (not xwidgets)
|
|
(not (memq t (mapcar #'xwidget-query-on-exit-flag xwidgets)))
|
|
(yes-or-no-p
|
|
(format "Buffer %S has xwidgets; kill it? " (buffer-name))))))
|
|
|
|
(when (featurep 'xwidget-internal)
|
|
(add-hook 'kill-buffer-query-functions #'xwidget-kill-buffer-query-function)
|
|
;; This would have felt better in C, but this seems to work well in
|
|
;; practice though.
|
|
(add-hook 'window-configuration-change-hook #'xwidget-delete-zombies))
|
|
|
|
(provide 'xwidget)
|
|
;;; xwidget.el ends here
|