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83 lines
2.6 KiB
83 lines
2.6 KiB
;;; elbank-transaction.el --- Major mode for displaying a transaction -*- lexical-binding: t; -*-
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;; Copyright (C) 2017-2018 Nicolas Petton
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;; Author: Nicolas Petton <nicolas@petton.fr>
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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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;;
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;;; Code:
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(require 'seq)
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(require 'map)
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(require 'elbank-common)
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(defvar elbank-transaction-mode-map
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(let ((map (make-sparse-keymap)))
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(define-key map (kbd "q") #'elbank-quit)
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map)
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"Keymap for `elbank-transaction-mode'.")
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(define-derived-mode elbank-transaction-mode nil "Elbank Transaction"
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"Major mode for viewing a single transaction.
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\\{elbank-transaction-mode-map}"
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(read-only-mode))
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;;;###autoload
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(defun elbank-show-transaction (transaction)
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"Show the details of TRANSACTION in a separate buffer."
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(let ((buf (get-buffer-create "*Elbank transaction*")))
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(pop-to-buffer buf)
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(elbank-transaction-mode)
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(elbank-transaction--refresh transaction)))
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(cl-defgeneric elbank-transaction--field (transaction key)
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"Return the label of the KEY of TRANSACTION."
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(map-elt transaction key))
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(cl-defmethod elbank-transaction--field (transaction (_key (eql account)))
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(elbank-account-name (elbank-transaction-elt transaction 'account)))
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(defun elbank-transaction--refresh (transaction)
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"Populate the current buffer with the details of TRANSACTION."
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(let* ((inhibit-read-only t)
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(keys (map-keys transaction))
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(width (1+ (seq-reduce (lambda (acc elt)
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(max acc (seq-length (symbol-name elt))))
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keys
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0))))
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(erase-buffer)
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(seq-doseq (key (seq-sort (lambda (k1 k2)
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(string-lessp (symbol-name k1)
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(symbol-name k2)))
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keys))
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(let ((label (capitalize (format "%s:" key))))
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(dotimes (_ (- width (seq-length label)))
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(insert " "))
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(insert label)
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(put-text-property (point-at-bol) (point)
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'face
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'font-lock-keyword-face)
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(insert " ")
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(insert (format "%s" (elbank-transaction--field transaction key)))
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(insert "\n")))))
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(provide 'elbank-transaction)
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;;; elbank-transaction.el ends here
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