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137 Zeilen
5.6 KiB
137 Zeilen
5.6 KiB
;;; cider-popup.el --- Creating and quitting popup buffers -*- lexical-binding: t; -*-
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;; Copyright © 2015-2019 Bozhidar Batsov, Artur Malabarba and CIDER contributors
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;; Author: Artur Malabarba <bruce.connor.am@gmail.com>
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;; This program 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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;; This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Common functionality for dealing with popup buffers.
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;;; Code:
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(require 'subr-x)
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(require 'cider-compat)
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(define-minor-mode cider-popup-buffer-mode
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"Mode for CIDER popup buffers"
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nil
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(" cider-tmp")
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'(("q" . cider-popup-buffer-quit-function)))
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(defvar-local cider-popup-buffer-quit-function #'cider-popup-buffer-quit
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"The function that is used to quit a temporary popup buffer.")
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(defun cider-popup-buffer-quit-function (&optional kill-buffer-p)
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"Wrapper to invoke the function `cider-popup-buffer-quit-function'.
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KILL-BUFFER-P is passed along."
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(interactive)
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(funcall cider-popup-buffer-quit-function kill-buffer-p))
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(defun cider-popup-buffer (name &optional select mode ancillary)
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"Create new popup buffer called NAME.
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If SELECT is non-nil, select the newly created window.
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If major MODE is non-nil, enable it for the popup buffer.
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If ANCILLARY is non-nil, the buffer is added to `cider-ancillary-buffers'
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and automatically removed when killed."
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(thread-first (cider-make-popup-buffer name mode ancillary)
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(cider-popup-buffer-display select)))
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(defun cider-popup-buffer-display (buffer &optional select)
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"Display BUFFER.
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If SELECT is non-nil, select the BUFFER."
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(let ((window (get-buffer-window buffer 'visible)))
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(when window
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(with-current-buffer buffer
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(set-window-point window (point))))
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;; If the buffer we are popping up is already displayed in the selected
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;; window, the below `inhibit-same-window' logic will cause it to be
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;; displayed twice - so we early out in this case. Note that we must check
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;; `selected-window', as async request handlers are executed in the context
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;; of the current connection buffer (i.e. `current-buffer' is dynamically
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;; bound to that).
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(unless (eq window (selected-window))
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;; Non nil `inhibit-same-window' ensures that current window is not covered
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;; Non nil `inhibit-switch-frame' ensures that the other frame is not selected
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;; if that's where the buffer is being shown.
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(funcall (if select #'pop-to-buffer #'display-buffer)
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buffer `(nil . ((inhibit-same-window . ,pop-up-windows)
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(reusable-frames . visible))))))
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buffer)
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(defun cider-popup-buffer-quit (&optional kill)
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"Quit the current (temp) window.
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Bury its buffer using `quit-restore-window'.
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If prefix argument KILL is non-nil, kill the buffer instead of burying it."
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(interactive)
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(quit-restore-window (selected-window) (if kill 'kill 'append)))
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(defvar-local cider-popup-output-marker nil)
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(defvar cider-ancillary-buffers nil
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"A list ancillary buffers created by the various CIDER commands.
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We track them mostly to be able to clean them up on quit.")
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(defun cider-make-popup-buffer (name &optional mode ancillary)
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"Create a temporary buffer called NAME using major MODE (if specified).
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If ANCILLARY is non-nil, the buffer is added to `cider-ancillary-buffers'
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and automatically removed when killed."
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(with-current-buffer (get-buffer-create name)
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(kill-all-local-variables)
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(setq buffer-read-only nil)
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(erase-buffer)
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(when mode
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(funcall mode))
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(cider-popup-buffer-mode 1)
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(setq cider-popup-output-marker (point-marker))
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(setq buffer-read-only t)
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(when ancillary
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(add-to-list 'cider-ancillary-buffers name)
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(add-hook 'kill-buffer-hook
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(lambda ()
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(setq cider-ancillary-buffers
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(remove name cider-ancillary-buffers)))
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nil 'local))
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(current-buffer)))
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(defun cider-emit-into-popup-buffer (buffer value &optional face inhibit-indent)
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"Emit into BUFFER the provided VALUE optionally using FACE.
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Indent emitted value (usually a sexp) unless INHIBIT-INDENT is specified
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and non-nil."
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;; Long string output renders Emacs unresponsive and users might intentionally
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;; kill the frozen popup buffer. Therefore, we don't re-create the buffer and
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;; silently ignore the output.
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(when (buffer-live-p buffer)
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(with-current-buffer buffer
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(let ((inhibit-read-only t)
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(buffer-undo-list t)
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(moving (= (point) cider-popup-output-marker)))
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(save-excursion
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(goto-char cider-popup-output-marker)
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(let ((value-str (format "%s" value)))
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(when face
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(if (fboundp 'add-face-text-property)
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(add-face-text-property 0 (length value-str) face nil value-str)
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(add-text-properties 0 (length value-str) (list 'face face) value-str)))
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(insert value-str))
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(unless inhibit-indent
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(indent-sexp))
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(set-marker cider-popup-output-marker (point)))
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(when moving (goto-char cider-popup-output-marker))))))
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(provide 'cider-popup)
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;;; cider-popup.el ends here
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