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142 lines
4.3 KiB
EmacsLisp
142 lines
4.3 KiB
EmacsLisp
;;; bui-button.el --- Text buttons and faces -*- lexical-binding: t -*-
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;; Copyright © 2014-2016 Alex Kost <alezost@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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;;
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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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;;
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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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;; This file provides general faces and some code to display buttons and
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;; to work with them.
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;;; Code:
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(require 'cus-edit) ; for faces
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(require 'dash)
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(require 'bui-utils)
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(defface bui-time
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'((t :inherit font-lock-constant-face))
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"Face used for timestamps."
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:group 'bui-faces)
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(defface bui-file-name
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'((t :inherit link))
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"Face used for file name buttons."
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:group 'bui-faces)
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(defface bui-url
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'((t :inherit link))
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"Face used for URL buttons."
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:group 'bui-faces)
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(defface bui-action-button
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'((t :inherit custom-button))
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"Face used for action buttons."
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:group 'bui-faces)
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(defface bui-action-button-mouse
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'((t :inherit custom-button-mouse))
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"Mouse face used for action buttons."
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:group 'bui-faces)
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(defvar bui-button-map
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(let ((map (make-sparse-keymap)))
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(set-keymap-parent map button-map)
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(define-key map (kbd "c") 'bui-button-copy-label)
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map)
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"Keymap for BUI buttons.")
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(define-button-type 'bui
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'keymap bui-button-map
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'follow-link t)
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(define-button-type 'bui-action
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:supertype 'bui
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'face 'bui-action-button
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'mouse-face 'bui-action-button-mouse)
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(define-button-type 'bui-file
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:supertype 'bui
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'face 'bui-file-name
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'help-echo "Find file"
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'action (lambda (btn)
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(bui-find-file (or (button-get btn 'file)
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(button-label btn)))))
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(define-button-type 'bui-url
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:supertype 'bui
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'face 'bui-url
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'help-echo "Browse URL"
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'action (lambda (btn)
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(browse-url (or (button-get btn 'url)
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(button-label btn)))))
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(defun bui-button-copy-label (&optional position)
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"Copy a label of the button at POSITION into kill ring.
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If POSITION is nil, use the current point position."
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(interactive)
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(--when-let (button-at (or position (point)))
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(bui-copy-as-kill (button-label it))))
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(defun bui-button-type? (symbol)
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"Return non-nil, if SYMBOL is a button type."
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(and symbol
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(get symbol 'button-category-symbol)))
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(defun bui-insert-button (label &optional type &rest properties)
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"Make button of TYPE with LABEL and insert it at point.
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See `insert-text-button' for the meaning of PROPERTIES."
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(apply #'insert-text-button label
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:type (or type 'button)
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properties))
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(defun bui-insert-action-button (label action &optional message
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&rest properties)
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"Make action button with LABEL and insert it at point.
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ACTION is a function called when the button is pressed. It
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should accept button as the argument.
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MESSAGE is a button message.
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See `insert-text-button' for the meaning of PROPERTIES."
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(apply #'bui-insert-button
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label 'bui-action
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'action action
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'help-echo message
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properties))
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(defun bui-buttonize (value button-type separator &rest properties)
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"Make BUTTON-TYPE button(s) from VALUE.
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Return a string with button(s).
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VALUE can be nil, a button name (string or symbol) or a list of
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button names. If it is a list, buttons are separated with
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SEPARATOR string.
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PROPERTIES are passed to `bui-insert-button'."
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(bui-get-non-nil value
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(with-temp-buffer
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(let ((labels (if (listp value) value (list value))))
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(bui-mapinsert (lambda (label)
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(apply #'bui-insert-button
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(if (symbolp label)
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(symbol-name label)
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label)
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button-type properties))
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labels
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separator))
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(buffer-substring (point-min) (point-max)))))
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(provide 'bui-button)
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;;; bui-button.el ends here
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