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;;; stack-question-list.el --- Major-mode for navigating questions list. -*- lexical-binding: t; -*-
;; Copyright (C) 2014 Artur Malabarba
;; Author: Artur Malabarba <bruce.connor.am@gmail.com>
;; Keywords: help, hypermedia, mail, news, tools
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
(require 'stack-question)
(require 'tabulated-list)
(require 'cl-lib)
;;; Customization
(defcustom stack-question-list-height 10
"Height, in lines, of stack-mode's *question-list* buffer."
:type 'integer
:group 'stack-question-list)
;;; Mode Definition
(define-derived-mode stack-question-list-mode tabulated-list-mode "Question List"
"Major mode for browsing a list of questions from stack-exchange.
Letters do not insert themselves; instead, they are commands.
\\<stack-question-list>
\\{stack-question-list}"
(hl-line-mode 1)
(stack-question-list--update-mode-line)
(setq tabulated-list-format
`[("Vote" 4 nil) ("Answ" 4 nil) ("Date" 4 nil) ("Title" 0 nil)])
(setq tabulated-list-padding 2)
(setq tabulated-list-sort-key (cons "Date" nil))
(add-hook 'tabulated-list-revert-hook
#'stack-question-list-refresh nil t)
(add-hook 'tabulated-list-revert-hook
#'stack-question-list--update-mode-line nil t)
(tabulated-list-init-header))
(mapc
(lambda (x) (define-key stack-question-list-mode-map
(car x) (cadr x)))
'(("j" stack-question-list-next)
("k" stack-question-list-previous)
("g" stack-question-list-refresh)
([?\r] stack-question-list-display-question)))
(defun stack-question-list--update-mode-line ()
"Fill the mode-line with useful information."
nil)
(defun stack-question-list-refresh (&optional redisplay)
"Update the list of questions.
If REDISPLAY is non-nil, also call `tabulated-list-print'."
;; Obviously this needs to be changed.
(let ((question-list (stack-test-sample-data "questions")))
;; Print the result.
(setq tabulated-list-entries
(mapcar #'stack-question-list--print-info question-list)))
(when redisplay (tabulated-list-print 'remember)))
;; (stack-question-list--print-info sample-question-unauthenticated)
(defun stack-question-list--print-info (data)
"Convert `json-read' DATA into tabulated-list format."
(cl-flet ((ca (x) (cdr (assoc x data))))
(list
data
(vector (int-to-string (ca 'score))
(int-to-string (ca 'answer_count))
(int-to-string (ca 'last_activity_date))
(ca 'title)))))
(defun stack-question-list-previous (n)
"Hide this question, move to previous one, display it."
(interactive "p")
(stack-question-list-next (- n)))
(defun stack-question-list-next (n)
"Hide this question, move to next one, display it."
(interactive "p")
(next-line n)
(stack-question-list-display-question))
(defun stack-question-list-display-question (&optional data focus)
"Display question given by DATA.
If called interactively (or with DATA being nil), display
question under point.
Also when called interactively (or when FOCUS is non-nil), also
focus the relevant window."
(interactive '(nil t))
(unless data (setq data (tabulated-list-get-id)))
(unless data (error "No question here!"))
(unless (window-live-p stack-question--window)
(setq stack-question--window
(split-window-below stack-question-list-height)))
(stack-question--display data stack-question--window)
(when focus
(select-window stack-question--window)))
(defvar stack-question-list--buffer nil
"Buffer where the list of questions is displayed.")
(defun list-questions (no-update)
"Display a list of stack-exchange questions."
(interactive "P")
(unless (buffer-live-p stack-question-list--buffer)
(setq stack-question-list--buffer
(generate-new-buffer "*question-list*")))
(with-current-buffer stack-question-list--buffer
(stack-question-list-mode)
(stack-question-list-refresh 'redisplay))
;; The package menu buffer has keybindings. If the user types
;; `M-x list-packages', that suggests it should become current.
(switch-to-buffer stack-question-list--buffer))
(provide 'stack-question-list)
;;; stack-question-list.el ends here
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