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9500e7df86
* lisp/tab-bar.el (tab-bar--load-buttons): Add "symbols/plus_16.svg" to tab-bar-new. Add "symbols/cross_16.svg" to tab-bar-close. Add "symbols/menu_16.svg" to tab-bar-menu-bar. (tab-bar-tab-name-format-default): Use 'add-face-text-property'. (tab-bar-history-mode): Add "symbols/chevron_left_16.svg" to tab-bar-back. Add "symbols/chevron_right_16.svg" to tab-bar-forward. * lisp/tab-line.el (tab-line-new): New icon with "symbols/plus_16.svg". (tab-line-new-button): Use it with nil rear-nonsticky. (tab-line-close): New icon with "symbols/cross_16.svg". (tab-line-close-button): Use it with nil rear-nonsticky. (tab-line-left): New icon with "symbols/chevron_left_16.svg". (tab-line-left-button): Use it with nil rear-nonsticky. (tab-line-right): New icon with "symbols/chevron_right_16.svg". (tab-line-right-button): Use it with nil rear-nonsticky. (tab-line-tab-name-format-default): Use 'add-face-text-property'. (tab-line-auto-hscroll): Append the face in 'add-face-text-property'.
1062 lines
44 KiB
EmacsLisp
1062 lines
44 KiB
EmacsLisp
;;; tab-line.el --- window-local tabs with window buffers -*- lexical-binding: t; -*-
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;; Copyright (C) 2019-2023 Free Software Foundation, Inc.
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;; Author: Juri Linkov <juri@linkov.net>
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;; Keywords: windows tabs
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;; Maintainer: emacs-devel@gnu.org
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;; This file is part of GNU Emacs.
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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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;;; Commentary:
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;; To enable this mode, run `M-x global-tab-line-mode'.
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;;; Code:
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(require 'cl-lib)
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(require 'seq) ; tab-line.el is not pre-loaded so it's safe to use it here
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(defgroup tab-line nil
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"Window-local tabs."
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:group 'convenience
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:version "27.1")
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(defcustom tab-line-tab-face-functions
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'(tab-line-tab-face-modified tab-line-tab-face-special)
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"Functions called to modify tab faces.
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Each function is called with five arguments: the tab, a list of
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all tabs, the face returned by the previously called modifier,
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whether the tab is a buffer, and whether the tab is selected."
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:type '(repeat
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(choice (function-item tab-line-tab-face-special)
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(function-item tab-line-tab-face-modified)
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(function-item tab-line-tab-face-inactive-alternating)
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(function-item tab-line-tab-face-group)
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(function :tag "Custom function")))
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:group 'tab-line
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:version "28.1")
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(defgroup tab-line-faces '((tab-line custom-face)) ; tab-line is defined in faces.el
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"Faces used in the tab line."
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:group 'tab-line
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:group 'faces
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:version "27.1")
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(defface tab-line-tab
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'((default :inherit tab-line)
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(((class color) (min-colors 88))
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:box (:line-width 1 :style released-button))
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(t :inverse-video nil))
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"Tab line face for selected tab."
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:version "27.1"
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:group 'tab-line-faces)
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(defface tab-line-tab-inactive
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'((default :inherit tab-line-tab)
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(((class color) (min-colors 88))
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:background "grey75")
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(t :inverse-video t))
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"Tab line face for non-selected tab."
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:version "27.1"
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:group 'tab-line-faces)
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(defface tab-line-tab-inactive-alternate
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'((t :inherit tab-line-tab-inactive :background "grey65"))
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"Alternate face for inactive tab-line tabs.
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Applied to alternating tabs when option
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`tab-line-tab-face-functions' includes function
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`tab-line-tab-face-inactive-alternating'."
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:version "28.1"
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:group 'tab-line-faces)
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(defface tab-line-tab-special
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'((default :weight bold)
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(((supports :slant italic))
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:slant italic :weight normal))
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"Face for special (i.e. non-file-backed) tabs.
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Applied when option `tab-line-tab-face-functions' includes
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function `tab-line-tab-face-special'."
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:version "28.1"
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:group 'tab-line-faces)
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(defface tab-line-tab-modified
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'((t :inherit font-lock-doc-face))
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"Face for modified tabs.
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Applied when option `tab-line-tab-face-functions' includes
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function `tab-line-tab-face-modified'."
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:version "28.1"
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:group 'tab-line-faces)
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(defface tab-line-tab-group
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'((t :inherit tab-line :box nil))
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"Face for group tabs.
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Applied when option `tab-line-tab-face-functions' includes
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function `tab-line-tab-face-group'."
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:version "28.1"
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:group 'tab-line-faces)
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(defface tab-line-tab-current
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'((default :inherit tab-line-tab)
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(((class color) (min-colors 88))
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:background "grey85"))
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"Tab line face for tab with current buffer in selected window."
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:version "27.1"
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:group 'tab-line-faces)
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(defface tab-line-highlight
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'((((class color) (min-colors 88))
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:box (:line-width 1 :style released-button)
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:background "grey85"
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:foreground "black")
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(t :inverse-video nil))
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"Tab line face for highlighting."
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:version "27.1"
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:group 'tab-line-faces)
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(defface tab-line-close-highlight
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'((t :foreground "red"))
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"Tab line face for highlighting of the close button."
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:version "27.1"
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:group 'tab-line-faces)
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(defvar-keymap tab-line-tab-map
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:doc "Local keymap for `tab-line-mode' window tabs."
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"<tab-line> <down-mouse-1>" #'tab-line-select-tab
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"<tab-line> <mouse-2>" #'tab-line-close-tab
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"<tab-line> <down-mouse-3>" #'tab-line-tab-context-menu
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"<tab-line> <touchscreen-begin>" #'tab-line-select-tab
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"RET" #'tab-line-select-tab)
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(defvar-keymap tab-line-add-map
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:doc "Local keymap to add `tab-line-mode' window tabs."
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"<tab-line> <down-mouse-1>" #'tab-line-new-tab
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"<tab-line> <down-mouse-2>" #'tab-line-new-tab
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"<tab-line> <touchscreen-begin>" #'tab-line-new-tab
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"RET" #'tab-line-new-tab)
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(defvar-keymap tab-line-tab-close-map
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:doc "Local keymap to close `tab-line-mode' window tabs."
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"<tab-line> <mouse-1>" #'tab-line-close-tab
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"<tab-line> <mouse-2>" #'tab-line-close-tab
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"<tab-line> <touchscreen-begin>" #'tab-line-close-tab)
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(defvar-keymap tab-line-left-map
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:doc "Local keymap to scroll `tab-line-mode' window tabs to the left."
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"<tab-line> <down-mouse-1>" #'tab-line-hscroll-left
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"<tab-line> <down-mouse-2>" #'tab-line-hscroll-left
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"<tab-line> <touchscreen-begin>" #'tab-line-hscroll-left
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"RET" #'tab-line-new-tab)
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(defvar-keymap tab-line-right-map
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:doc "Local keymap to scroll `tab-line-mode' window tabs to the right."
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"<tab-line> <down-mouse-1>" #'tab-line-hscroll-right
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"<tab-line> <down-mouse-2>" #'tab-line-hscroll-right
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"<tab-line> <touchscreen-begin>" #'tab-line-hscroll-right
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"RET" #'tab-line-new-tab)
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(defcustom tab-line-new-tab-choice t
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"Defines what to show in a new tab.
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If t, display a selection menu with all available buffers.
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If the value is a function, call it with no arguments."
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:type '(choice (const :tag "Buffer menu" t)
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(function :tag "Function"))
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:group 'tab-line
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:version "27.1")
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(defcustom tab-line-new-button-show t
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"If non-nil, show the \"New tab\" button in the tab line."
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:type 'boolean
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:initialize 'custom-initialize-default
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:set (lambda (sym val)
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(set-default sym val)
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(force-mode-line-update))
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:group 'tab-line
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:version "27.1")
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(define-icon tab-line-new nil
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`((image "symbols/plus_16.svg" "tabs/new.xpm"
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:face shadow
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:margin (2 . 0)
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:ascent center)
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(text " + "))
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"Icon for creating a new tab."
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:version "30.1"
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:help-echo "New tab")
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(defvar tab-line-new-button
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(propertize (icon-string 'tab-line-new)
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'rear-nonsticky nil
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'keymap tab-line-add-map
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'mouse-face 'tab-line-highlight
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'help-echo "Click to add tab")
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"Button for creating a new tab.")
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(defcustom tab-line-close-button-show t
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"Defines where to show the close tab button.
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If t, show the close tab button on all tabs.
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If `selected', show it only on the selected tab.
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If `non-selected', show it only on non-selected tab.
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If nil, don't show it at all."
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:type '(choice (const :tag "On all tabs" t)
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(const :tag "On selected tab" selected)
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(const :tag "On non-selected tabs" non-selected)
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(const :tag "None" nil))
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:initialize 'custom-initialize-default
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:set (lambda (sym val)
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(set-default sym val)
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(force-mode-line-update))
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:group 'tab-line
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:version "27.1")
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(define-icon tab-line-close nil
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`((image "symbols/cross_16.svg" "tabs/close.xpm"
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:face shadow
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:height (1.0 . em)
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:margin (2 . 0)
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:ascent center)
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(text " x"))
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"Icon for closing the clicked tab."
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:version "30.1"
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:help-echo "Click to close tab")
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(defvar tab-line-close-button
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(propertize (icon-string 'tab-line-close)
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'rear-nonsticky nil ;; important to not break auto-scroll
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'keymap tab-line-tab-close-map
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'mouse-face 'tab-line-close-highlight
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'help-echo "Click to close tab")
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"Button for closing the clicked tab.")
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(define-icon tab-line-left nil
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`((image "symbols/chevron_left_16.svg" "tabs/left-arrow.xpm"
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:face shadow
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:margin (2 . 0)
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:ascent center)
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(text " <"))
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"Icon for scrolling horizontally to the left."
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:version "30.1")
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(defvar tab-line-left-button
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(propertize (icon-string 'tab-line-left)
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'rear-nonsticky nil
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'keymap tab-line-left-map
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'mouse-face 'tab-line-highlight
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'help-echo "Click to scroll left")
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"Button for scrolling horizontally to the left.")
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(define-icon tab-line-right nil
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`((image "symbols/chevron_right_16.svg" "tabs/right-arrow.xpm"
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:face shadow
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:margin (2 . 0)
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:ascent center)
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(text "> "))
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"Icon for scrolling horizontally to the right."
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:version "30.1")
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(defvar tab-line-right-button
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(propertize (icon-string 'tab-line-right)
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'rear-nonsticky nil
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'keymap tab-line-right-map
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'mouse-face 'tab-line-highlight
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'help-echo "Click to scroll right")
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"Button for scrolling horizontally to the right.")
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(defvar tab-line-separator nil
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"String that delimits tabs.")
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(defcustom tab-line-tab-name-function #'tab-line-tab-name-buffer
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"Function to get a tab name.
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The function is called with one or two arguments: the buffer or
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another object whose tab's name is requested, and, optionally,
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the list of all tabs."
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:type '(choice (const :tag "Buffer name"
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tab-line-tab-name-buffer)
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(const :tag "Truncated buffer name"
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tab-line-tab-name-truncated-buffer)
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(function :tag "Function"))
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:initialize 'custom-initialize-default
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:set (lambda (sym val)
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(set-default sym val)
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(force-mode-line-update))
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:group 'tab-line
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:version "27.1")
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(defun tab-line-tab-name-buffer (buffer &optional _buffers)
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"Generate tab name from BUFFER.
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Reduce tab width proportionally to space taken by other tabs.
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This function can be overridden by changing the default value of the
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variable `tab-line-tab-name-function'."
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(buffer-name buffer))
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(defcustom tab-line-tab-name-truncated-max 20
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"Maximum length of the tab name from the current buffer.
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Effective when `tab-line-tab-name-function' is customized
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to `tab-line-tab-name-truncated-buffer'."
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:type 'natnum
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:group 'tab-line
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:version "27.1")
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(defvar tab-line-tab-name-ellipsis t)
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(defun tab-line-tab-name-truncated-buffer (buffer &optional _buffers)
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"Generate tab name from BUFFER, truncating it as needed.
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Truncate it to the length specified by `tab-line-tab-name-truncated-max'.
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If truncated, append ellipsis per `tab-line-tab-name-ellipsis'."
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(let ((tab-name (buffer-name buffer)))
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(if (< (length tab-name) tab-line-tab-name-truncated-max)
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tab-name
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(propertize (truncate-string-to-width
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tab-name tab-line-tab-name-truncated-max nil nil
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tab-line-tab-name-ellipsis)
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'help-echo tab-name))))
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(defcustom tab-line-tabs-function #'tab-line-tabs-window-buffers
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"Function to get a list of tabs to display in the tab line.
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This function should return either a list of buffers whose names will
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be displayed, or just a list of strings to display in the tab line.
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By default, use function `tab-line-tabs-window-buffers' that
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returns a list of buffers associated with the selected window.
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When `tab-line-tabs-mode-buffers', return a list of buffers
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with the same major mode as the current buffer.
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When `tab-line-tabs-buffer-groups', return a list of buffers
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grouped either by `tab-line-tabs-buffer-group-function', when set,
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or by `tab-line-tabs-buffer-groups'."
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:type '(choice (const :tag "Window buffers"
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tab-line-tabs-window-buffers)
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(const :tag "Same mode buffers"
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tab-line-tabs-mode-buffers)
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(const :tag "Grouped buffers"
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tab-line-tabs-buffer-groups)
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(function :tag "Function"))
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:initialize 'custom-initialize-default
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:set (lambda (sym val)
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(set-default sym val)
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(force-mode-line-update))
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:group 'tab-line
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:version "27.1")
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(defvar tab-line-tabs-buffer-list-function #'tab-line-tabs-buffer-list
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"Function to return a global list of buffers.
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Used only for `tab-line-tabs-mode-buffers' and `tab-line-tabs-buffer-groups'.")
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;;; Touch screen support.
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(defun tab-line-track-tap (event &optional function)
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"Track a tap starting from EVENT.
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If EVENT is not a `touchscreen-begin' event, return t.
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Otherwise, return t if the tap completes successfully, and nil if
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the tap should be ignored.
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If FUNCTION is specified and the tap does not complete within
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`touch-screen-delay' seconds, display the appropriate context
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menu by calling FUNCTION with EVENT, and return nil."
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(if (not (eq (car-safe event) 'touchscreen-begin))
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t
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(let ((result (catch 'context-menu
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(let (timer)
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(unwind-protect
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(progn
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(when function
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(setq timer
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(run-at-time touch-screen-delay t
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#'throw 'context-menu
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'context-menu)))
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(touch-screen-track-tap event))
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(when timer
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(cancel-timer timer)))))))
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(cond ((eq result 'context-menu)
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(prog1 nil
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(funcall function event)))
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(result t)))))
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(defun tab-line-event-start (event)
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"Like `event-start'.
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However, return the correct mouse position list if EVENT is a
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`touchscreen-begin' event."
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(or (and (eq (car-safe event) 'touchscreen-begin)
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(cdadr event))
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(event-start event)))
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(defun tab-line-tabs-buffer-list ()
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(seq-filter (lambda (b) (and (buffer-live-p b)
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(/= (aref (buffer-name b) 0) ?\s)))
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(seq-uniq (append (list (current-buffer))
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(mapcar #'car (window-prev-buffers))
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(buffer-list)))))
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(defun tab-line-tabs-mode-buffers ()
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"Return a list of buffers with the same major mode as the current buffer."
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(let ((mode major-mode))
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(seq-sort-by #'buffer-name #'string<
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(seq-filter (lambda (b) (with-current-buffer b
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(derived-mode-p mode)))
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(funcall tab-line-tabs-buffer-list-function)))))
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(defvar tab-line-tabs-buffer-group-function nil
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"Function to add a buffer to the appropriate group of tabs.
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Takes a buffer as arg and should return a group name as a string.
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If the return value is nil, the buffer should be filtered out.")
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(defvar tab-line-tabs-buffer-group-sort-function nil
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"Function to sort buffers in a group.")
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(defvar tab-line-tabs-buffer-groups-sort-function #'string<
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"Function to sort group names.")
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(defvar tab-line-tabs-buffer-groups mouse-buffer-menu-mode-groups
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"How to group various major modes together in the tab line.
|
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Each element has the form (REGEXP . GROUPNAME).
|
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If the major mode's name matches REGEXP, it belongs to GROUPNAME.
|
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The default is for each major mode to have a separate group
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named the same as the mode.")
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(defun tab-line-tabs-buffer-group-name (&optional buffer)
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(if (functionp tab-line-tabs-buffer-group-function)
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(funcall tab-line-tabs-buffer-group-function buffer)
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(let ((mode (if buffer (with-current-buffer buffer
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(format-mode-line mode-name))
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(format-mode-line mode-name))))
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(or (cdr (seq-find (lambda (group)
|
||
(string-match-p (car group) mode))
|
||
tab-line-tabs-buffer-groups))
|
||
mode))))
|
||
|
||
(defun tab-line-tabs-buffer-groups ()
|
||
"Return a list of tabs that should be displayed in the tab line.
|
||
By default return a list of buffers grouped by major mode,
|
||
according to `tab-line-tabs-buffer-groups'.
|
||
If non-nil, `tab-line-tabs-buffer-group-function' is used to
|
||
generate the group name."
|
||
(if (window-parameter nil 'tab-line-groups)
|
||
(let* ((buffers (funcall tab-line-tabs-buffer-list-function))
|
||
(groups
|
||
(seq-sort tab-line-tabs-buffer-groups-sort-function
|
||
(delq nil (mapcar #'car (seq-group-by
|
||
(lambda (buffer)
|
||
(tab-line-tabs-buffer-group-name
|
||
buffer))
|
||
buffers)))))
|
||
(selected-group (window-parameter nil 'tab-line-group))
|
||
(tabs
|
||
(mapcar (lambda (group)
|
||
`(tab
|
||
(name . ,group)
|
||
(selected . ,(equal group selected-group))
|
||
(select . ,(lambda ()
|
||
(set-window-parameter nil 'tab-line-groups nil)
|
||
(set-window-parameter nil 'tab-line-group group)
|
||
(set-window-parameter nil 'tab-line-hscroll nil)))))
|
||
groups)))
|
||
tabs)
|
||
|
||
(let* ((window-parameter (window-parameter nil 'tab-line-group))
|
||
(group-name (tab-line-tabs-buffer-group-name (current-buffer)))
|
||
(group (prog1 (or window-parameter group-name "All")
|
||
(when (equal window-parameter group-name)
|
||
(set-window-parameter nil 'tab-line-group nil))))
|
||
(group-tab `(tab
|
||
(name . ,group)
|
||
(group-tab . t)
|
||
(select . ,(lambda ()
|
||
(set-window-parameter nil 'tab-line-groups t)
|
||
(set-window-parameter nil 'tab-line-group group)
|
||
(set-window-parameter nil 'tab-line-hscroll nil)))))
|
||
(buffers
|
||
(seq-filter (lambda (b)
|
||
(equal (tab-line-tabs-buffer-group-name b) group))
|
||
(funcall tab-line-tabs-buffer-list-function)))
|
||
(sorted-buffers (if (functionp tab-line-tabs-buffer-group-sort-function)
|
||
(seq-sort tab-line-tabs-buffer-group-sort-function
|
||
buffers)
|
||
buffers))
|
||
(tabs (mapcar (lambda (buffer)
|
||
`(tab
|
||
(name . ,(funcall tab-line-tab-name-function buffer))
|
||
(selected . ,(eq buffer (current-buffer)))
|
||
(buffer . ,buffer)
|
||
(close . ,(lambda (&optional b)
|
||
;; kill-buffer because bury-buffer
|
||
;; won't remove the buffer from tab-line
|
||
(kill-buffer (or b buffer))))))
|
||
sorted-buffers)))
|
||
(cons group-tab tabs))))
|
||
|
||
(defun tab-line-tabs-window-buffers ()
|
||
"Return a list of tabs that should be displayed in the tab line.
|
||
By default returns a list of window buffers, i.e. buffers previously
|
||
shown in the same window where the tab line is displayed.
|
||
This list can be overridden by changing the default value of the
|
||
variable `tab-line-tabs-function'."
|
||
(let* ((window (selected-window))
|
||
(buffer (window-buffer window))
|
||
(next-buffers (seq-remove (lambda (b) (eq b buffer))
|
||
(window-next-buffers window)))
|
||
(next-buffers (seq-filter #'buffer-live-p next-buffers))
|
||
(prev-buffers (seq-remove (lambda (b) (eq b buffer))
|
||
(mapcar #'car (window-prev-buffers window))))
|
||
(prev-buffers (seq-filter #'buffer-live-p prev-buffers))
|
||
;; Remove next-buffers from prev-buffers
|
||
(prev-buffers (seq-difference prev-buffers next-buffers)))
|
||
(append (reverse prev-buffers)
|
||
(list buffer)
|
||
next-buffers)))
|
||
|
||
|
||
(defcustom tab-line-tab-name-format-function #'tab-line-tab-name-format-default
|
||
"Function to format a tab name.
|
||
The function will be called two arguments: the tab whose name to format,
|
||
and the list of all the tabs; it should return the formatted tab name
|
||
to display in the tab line.
|
||
The first argument could also be a different object, for example the buffer
|
||
which the tab will represent."
|
||
:type 'function
|
||
:initialize 'custom-initialize-default
|
||
:set (lambda (sym val)
|
||
(set-default sym val)
|
||
(force-mode-line-update))
|
||
:group 'tab-line
|
||
:version "28.1")
|
||
|
||
(defun tab-line-tab-name-format-default (tab tabs)
|
||
"Default function to use as `tab-line-tab-name-format-function', which see."
|
||
(let* ((buffer-p (bufferp tab))
|
||
(selected-p (if buffer-p
|
||
(eq tab (window-buffer))
|
||
(cdr (assq 'selected tab))))
|
||
(name (if buffer-p
|
||
(funcall tab-line-tab-name-function tab tabs)
|
||
(cdr (assq 'name tab))))
|
||
(face (if selected-p
|
||
(if (mode-line-window-selected-p)
|
||
'tab-line-tab-current
|
||
'tab-line-tab)
|
||
'tab-line-tab-inactive)))
|
||
(dolist (fn tab-line-tab-face-functions)
|
||
(setf face (funcall fn tab tabs face buffer-p selected-p)))
|
||
(apply 'propertize
|
||
(concat (propertize (string-replace "%" "%%" name) ;; (bug#57848)
|
||
'face face
|
||
'keymap tab-line-tab-map
|
||
'help-echo (if selected-p "Current tab"
|
||
"Click to select tab")
|
||
;; Don't turn mouse-1 into mouse-2 (bug#49247)
|
||
'follow-link 'ignore)
|
||
(let ((close (or (and (or buffer-p (assq 'buffer tab)
|
||
(assq 'close tab))
|
||
tab-line-close-button-show
|
||
(not (eq tab-line-close-button-show
|
||
(if selected-p 'non-selected
|
||
'selected)))
|
||
tab-line-close-button)
|
||
"")))
|
||
(setq close (copy-sequence close))
|
||
;; Don't overwrite the icon face
|
||
(add-face-text-property 0 (length close) face t close)
|
||
close))
|
||
`(
|
||
tab ,tab
|
||
,@(if selected-p '(selected t))
|
||
mouse-face tab-line-highlight))))
|
||
|
||
(defun tab-line-format-template (tabs)
|
||
"Template of the format for displaying tab line for selected window.
|
||
This is used by `tab-line-format'."
|
||
(let* ((separator (or tab-line-separator (if (window-system) " " "|")))
|
||
(hscroll (window-parameter nil 'tab-line-hscroll))
|
||
(strings
|
||
(mapcar
|
||
(lambda (tab)
|
||
(concat separator
|
||
(funcall tab-line-tab-name-format-function tab tabs)))
|
||
tabs))
|
||
(hscroll-data (tab-line-auto-hscroll strings hscroll)))
|
||
(setq hscroll (nth 1 hscroll-data))
|
||
(append
|
||
(if (null (nth 0 hscroll-data))
|
||
(when hscroll
|
||
(setq hscroll nil)
|
||
(set-window-parameter nil 'tab-line-hscroll hscroll))
|
||
(list separator
|
||
(when (and (numberp hscroll) (not (zerop hscroll)))
|
||
tab-line-left-button)
|
||
(when (if (numberp hscroll)
|
||
(< (truncate hscroll) (1- (length strings)))
|
||
(> (length strings) 1))
|
||
tab-line-right-button)))
|
||
(if hscroll (nthcdr (truncate hscroll) strings) strings)
|
||
(list separator)
|
||
(when (and (eq tab-line-tabs-function #'tab-line-tabs-window-buffers)
|
||
tab-line-new-button-show
|
||
tab-line-new-button)
|
||
(list tab-line-new-button)))))
|
||
|
||
(defun tab-line-tab-face-inactive-alternating (tab tabs face _buffer-p selected-p)
|
||
"Return FACE for TAB in TABS with alternation.
|
||
SELECTED-P nil means TAB is not the selected tab.
|
||
When TAB is not selected and is even-numbered, make FACE
|
||
inherit from `tab-line-tab-inactive-alternate'. For use in
|
||
`tab-line-tab-face-functions'."
|
||
(when (and (not selected-p) (cl-evenp (cl-position tab tabs)))
|
||
(setf face `(:inherit (tab-line-tab-inactive-alternate ,face))))
|
||
face)
|
||
|
||
(defun tab-line-tab-face-special (tab _tabs face buffer-p _selected-p)
|
||
"Return FACE for TAB according to whether its buffer is special.
|
||
When TAB is a non-file-visiting buffer, make FACE inherit from
|
||
`tab-line-tab-special'. For use in
|
||
`tab-line-tab-face-functions'."
|
||
(let ((buffer (if buffer-p tab (cdr (assq 'buffer tab)))))
|
||
(when (and buffer (not (buffer-file-name buffer)))
|
||
(setf face `(:inherit (tab-line-tab-special ,face)))))
|
||
face)
|
||
|
||
(defun tab-line-tab-face-modified (tab _tabs face buffer-p _selected-p)
|
||
"Return FACE for TAB according to whether its buffer is modified.
|
||
When TAB is a modified, file-backed buffer, make FACE inherit
|
||
from `tab-line-tab-modified'. For use in
|
||
`tab-line-tab-face-functions'."
|
||
(let ((buffer (if buffer-p tab (cdr (assq 'buffer tab)))))
|
||
(when (and buffer (buffer-file-name buffer) (buffer-modified-p buffer))
|
||
(setf face `(:inherit (tab-line-tab-modified ,face)))))
|
||
face)
|
||
|
||
(defun tab-line-tab-face-group (tab _tabs face _buffer-p _selected-p)
|
||
"Return FACE for TAB according to whether it's a group tab.
|
||
For use in `tab-line-tab-face-functions'."
|
||
(when (alist-get 'group-tab tab)
|
||
(setf face `(:inherit (tab-line-tab-group ,face))))
|
||
face)
|
||
|
||
(defvar tab-line-auto-hscroll)
|
||
|
||
(defun tab-line-cache-key-default (tabs)
|
||
"Return default list of cache keys."
|
||
(list
|
||
tabs
|
||
;; handle buffer renames
|
||
(buffer-name (window-buffer))
|
||
;; handle tab-line scrolling
|
||
(window-parameter nil 'tab-line-hscroll)
|
||
;; for setting face 'tab-line-tab-current'
|
||
(mode-line-window-selected-p)
|
||
;; for `tab-line-tab-face-modified'
|
||
(and (memq 'tab-line-tab-face-modified
|
||
tab-line-tab-face-functions)
|
||
(buffer-file-name)
|
||
(buffer-modified-p))))
|
||
|
||
(defvar tab-line-cache-key-function #'tab-line-cache-key-default
|
||
"Function that adds more cache keys.
|
||
It is called with one argument, a list of tabs, and should return a list
|
||
of cache keys. You can use `add-function' to add more cache keys.")
|
||
|
||
(defun tab-line-format ()
|
||
"Format for displaying the tab line of the selected window."
|
||
(let* ((tabs (funcall tab-line-tabs-function))
|
||
(cache-key (funcall tab-line-cache-key-function tabs))
|
||
(cache (window-parameter nil 'tab-line-cache)))
|
||
;; Enable auto-hscroll again after it was disabled on manual scrolling.
|
||
;; The moment to enable it is when the window-buffer was updated.
|
||
(when (and tab-line-auto-hscroll ; if auto-hscroll was enabled
|
||
(integerp (nth 2 cache-key)) ; integer on manual scroll
|
||
cache ; window-buffer was updated
|
||
(not (equal (nth 1 (car cache)) (nth 1 cache-key))))
|
||
(set-window-parameter nil 'tab-line-hscroll (float (nth 2 cache-key))))
|
||
(or (and cache (equal (car cache) cache-key) (cdr cache))
|
||
(cdr (set-window-parameter
|
||
nil 'tab-line-cache
|
||
(cons cache-key (tab-line-format-template tabs)))))))
|
||
|
||
|
||
(defcustom tab-line-auto-hscroll t
|
||
"Allow or disallow automatic horizontal scrolling of the tab line.
|
||
Non-nil means the tab lines are automatically scrolled horizontally to make
|
||
the selected tab visible."
|
||
:type 'boolean
|
||
:group 'tab-line
|
||
:version "27.1")
|
||
|
||
(defvar tab-line-auto-hscroll-buffer (generate-new-buffer " *tab-line-hscroll*"))
|
||
|
||
(defun tab-line--get-tab-property (prop string)
|
||
(or (get-pos-property 1 prop string) ;; for most cases of 1-char separator
|
||
(get-pos-property 0 prop string) ;; for empty separator
|
||
(let ((pos (next-single-property-change 0 prop string))) ;; long separator
|
||
(and pos (get-pos-property pos prop string)))))
|
||
|
||
(defun tab-line-auto-hscroll (strings hscroll)
|
||
(with-current-buffer tab-line-auto-hscroll-buffer
|
||
(let ((truncate-partial-width-windows nil)
|
||
(inhibit-modification-hooks t)
|
||
show-arrows)
|
||
(setq truncate-lines nil
|
||
word-wrap nil)
|
||
(erase-buffer)
|
||
(apply 'insert strings)
|
||
(goto-char (point-min))
|
||
(add-face-text-property (point-min) (point-max) 'tab-line t)
|
||
;; Continuation means tab-line doesn't fit completely,
|
||
;; thus scroll arrows are needed for scrolling.
|
||
(setq show-arrows (> (vertical-motion 1) 0))
|
||
;; Try to auto-hscroll only when scrolling is needed,
|
||
;; but no manual scrolling was performed before.
|
||
(when (and tab-line-auto-hscroll
|
||
show-arrows
|
||
;; Do nothing when scrolled manually
|
||
(not (integerp hscroll)))
|
||
(let ((selected (seq-position strings 'selected
|
||
(lambda (str prop)
|
||
(tab-line--get-tab-property prop str)))))
|
||
(cond
|
||
((null selected)
|
||
;; Do nothing if no tab is selected
|
||
)
|
||
((or (not (numberp hscroll)) (< selected (truncate hscroll)))
|
||
;; Selected is scrolled to the left, or no scrolling yet
|
||
(erase-buffer)
|
||
(apply 'insert (reverse (seq-subseq strings 0 (1+ selected))))
|
||
(goto-char (point-min))
|
||
(add-face-text-property (point-min) (point-max) 'tab-line)
|
||
(if (> (vertical-motion 1) 0)
|
||
(let* ((point (previous-single-property-change (point) 'tab))
|
||
(tab-prop (when point
|
||
(or (get-pos-property point 'tab)
|
||
(and (setq point (previous-single-property-change point 'tab))
|
||
(get-pos-property point 'tab)))))
|
||
(new-hscroll (when tab-prop
|
||
(seq-position strings tab-prop
|
||
(lambda (str tab)
|
||
(eq (tab-line--get-tab-property 'tab str) tab))))))
|
||
(when new-hscroll
|
||
(setq hscroll (float new-hscroll))
|
||
(set-window-parameter nil 'tab-line-hscroll hscroll)))
|
||
(setq hscroll nil)
|
||
(set-window-parameter nil 'tab-line-hscroll hscroll)))
|
||
(t
|
||
;; Check if the selected tab is already visible
|
||
(erase-buffer)
|
||
(apply 'insert (seq-subseq strings (truncate hscroll) (1+ selected)))
|
||
(goto-char (point-min))
|
||
(add-face-text-property (point-min) (point-max) 'tab-line)
|
||
(when (> (vertical-motion 1) 0)
|
||
;; Not visible already
|
||
(erase-buffer)
|
||
(apply 'insert (reverse (seq-subseq strings 0 (1+ selected))))
|
||
(goto-char (point-min))
|
||
(add-face-text-property (point-min) (point-max) 'tab-line)
|
||
(when (> (vertical-motion 1) 0)
|
||
(let* ((point (previous-single-property-change (point) 'tab))
|
||
(tab-prop (when point
|
||
(or (get-pos-property point 'tab)
|
||
(and (setq point (previous-single-property-change point 'tab))
|
||
(get-pos-property point 'tab)))))
|
||
(new-hscroll (when tab-prop
|
||
(seq-position strings tab-prop
|
||
(lambda (str tab)
|
||
(eq (tab-line--get-tab-property 'tab str) tab))))))
|
||
(when new-hscroll
|
||
(setq hscroll (float new-hscroll))
|
||
(set-window-parameter nil 'tab-line-hscroll hscroll)))))))))
|
||
(list show-arrows hscroll))))
|
||
|
||
|
||
(defun tab-line-hscroll (&optional arg window)
|
||
(let* ((hscroll (window-parameter window 'tab-line-hscroll))
|
||
(tabs (if window
|
||
(with-selected-window window (funcall tab-line-tabs-function))
|
||
(funcall tab-line-tabs-function))))
|
||
(set-window-parameter
|
||
window 'tab-line-hscroll
|
||
(max 0 (min (+ (if (numberp hscroll) (truncate hscroll) 0) (or arg 1))
|
||
(1- (length tabs)))))
|
||
(when window
|
||
(force-mode-line-update t))))
|
||
|
||
(defun tab-line-hscroll-right (&optional arg event)
|
||
"Scroll the tab line ARG positions to the right.
|
||
Interactively, ARG is the prefix numeric argument and defaults to 1."
|
||
(interactive (list current-prefix-arg last-nonmenu-event))
|
||
(when (tab-line-track-tap event)
|
||
(let ((window (and (listp event)
|
||
(posn-window (tab-line-event-start event)))))
|
||
(tab-line-hscroll arg window)
|
||
(force-mode-line-update window))))
|
||
|
||
(defun tab-line-hscroll-left (&optional arg event)
|
||
"Scroll the tab line ARG positions to the left.
|
||
Interactively, ARG is the prefix numeric argument and defaults to 1."
|
||
(interactive (list current-prefix-arg last-nonmenu-event))
|
||
(when (tab-line-track-tap event)
|
||
(let ((window (and (listp event)
|
||
(posn-window (tab-line-event-start event)))))
|
||
(tab-line-hscroll (- (or arg 1)) window)
|
||
(force-mode-line-update window))))
|
||
|
||
|
||
(defun tab-line-new-tab (&optional event)
|
||
"Add a new tab to the selected-window's tab line.
|
||
This command is usually invoked by clicking on the plus-shaped button
|
||
on the tab line. Switching to another buffer also adds a new tab
|
||
corresponding to the new buffer shown in the window."
|
||
(interactive (list last-nonmenu-event))
|
||
(when (tab-line-track-tap event)
|
||
(if (functionp tab-line-new-tab-choice)
|
||
(funcall tab-line-new-tab-choice)
|
||
(let ((tab-line-tabs-buffer-groups mouse-buffer-menu-mode-groups))
|
||
(if (and (listp event)
|
||
(display-popup-menus-p)
|
||
(not tty-menu-open-use-tmm))
|
||
(mouse-buffer-menu event) ; like (buffer-menu-open)
|
||
;; tty menu doesn't support mouse clicks, so use tmm
|
||
(tmm-prompt (mouse-buffer-menu-keymap)))))))
|
||
|
||
(defun tab-line-select-tab (&optional event)
|
||
"Switch to the buffer specified by the tab on which you click.
|
||
This command maintains the original order of prev/next buffers.
|
||
So, for example, switching to a previous tab is equivalent to
|
||
using the `previous-buffer' command."
|
||
(interactive "e")
|
||
(when (tab-line-track-tap event #'tab-line-tab-context-menu)
|
||
(let* ((posnp (tab-line-event-start event))
|
||
(tab (tab-line--get-tab-property 'tab (car (posn-string posnp))))
|
||
(buffer (if (bufferp tab) tab (cdr (assq 'buffer tab)))))
|
||
(if buffer
|
||
(tab-line-select-tab-buffer buffer (posn-window posnp))
|
||
(let ((select (cdr (assq 'select tab))))
|
||
(when (functionp select)
|
||
(with-selected-window (posn-window posnp)
|
||
(funcall select)
|
||
(force-mode-line-update))))))))
|
||
|
||
(defun tab-line-select-tab-buffer (buffer &optional window)
|
||
(let* ((window-buffer (window-buffer window))
|
||
(next-buffers (seq-remove (lambda (b) (eq b window-buffer))
|
||
(window-next-buffers window)))
|
||
(prev-buffers (seq-remove (lambda (b) (eq b window-buffer))
|
||
(mapcar #'car (window-prev-buffers window))))
|
||
;; Remove next-buffers from prev-buffers
|
||
(prev-buffers (seq-difference prev-buffers next-buffers)))
|
||
(cond
|
||
((and (eq tab-line-tabs-function #'tab-line-tabs-window-buffers)
|
||
(memq buffer next-buffers))
|
||
(dotimes (_ (1+ (seq-position next-buffers buffer)))
|
||
(switch-to-next-buffer window)))
|
||
((and (eq tab-line-tabs-function #'tab-line-tabs-window-buffers)
|
||
(memq buffer prev-buffers))
|
||
(dotimes (_ (1+ (seq-position prev-buffers buffer)))
|
||
(switch-to-prev-buffer window)))
|
||
(t
|
||
(with-selected-window window
|
||
(switch-to-buffer buffer))))))
|
||
|
||
(defcustom tab-line-switch-cycling nil
|
||
"Enable cycling tab switch.
|
||
If non-nil, `tab-line-switch-to-prev-tab' in the first tab
|
||
switches to the last tab and `tab-line-switch-to-next-tab' in the
|
||
last tab switches to the first tab. This variable is not consulted
|
||
when `tab-line-tabs-function' is `tab-line-tabs-window-buffers'."
|
||
:type 'boolean
|
||
:group 'tab-line
|
||
:version "28.1")
|
||
|
||
(defun tab-line-switch-to-prev-tab (&optional event)
|
||
"Switch to the previous tab's buffer.
|
||
Its effect is the same as using the `previous-buffer' command
|
||
(\\[previous-buffer])."
|
||
(interactive (list last-nonmenu-event))
|
||
(let ((window (and (listp event) (posn-window (event-start event)))))
|
||
(if (eq tab-line-tabs-function #'tab-line-tabs-window-buffers)
|
||
(switch-to-prev-buffer window)
|
||
(with-selected-window (or window (selected-window))
|
||
(let* ((tabs (seq-filter
|
||
(lambda (tab) (or (bufferp tab) (assq 'buffer tab)))
|
||
(funcall tab-line-tabs-function)))
|
||
(pos (seq-position
|
||
tabs (current-buffer)
|
||
(lambda (tab buffer)
|
||
(if (bufferp tab)
|
||
(eq buffer tab)
|
||
(eq buffer (cdr (assq 'buffer tab)))))))
|
||
(tab (if pos
|
||
(if (and tab-line-switch-cycling (<= pos 0))
|
||
(nth (1- (length tabs)) tabs)
|
||
(nth (1- pos) tabs))))
|
||
(buffer (if (bufferp tab) tab (cdr (assq 'buffer tab)))))
|
||
(when (bufferp buffer)
|
||
(switch-to-buffer buffer)))))))
|
||
|
||
(defun tab-line-switch-to-next-tab (&optional event)
|
||
"Switch to the next tab's buffer.
|
||
Its effect is the same as using the `next-buffer' command
|
||
(\\[next-buffer])."
|
||
(interactive (list last-nonmenu-event))
|
||
(let ((window (and (listp event) (posn-window (event-start event)))))
|
||
(if (eq tab-line-tabs-function #'tab-line-tabs-window-buffers)
|
||
(switch-to-next-buffer window)
|
||
(with-selected-window (or window (selected-window))
|
||
(let* ((tabs (seq-filter
|
||
(lambda (tab) (or (bufferp tab) (assq 'buffer tab)))
|
||
(funcall tab-line-tabs-function)))
|
||
(pos (seq-position
|
||
tabs (current-buffer)
|
||
(lambda (tab buffer)
|
||
(if (bufferp tab)
|
||
(eq buffer tab)
|
||
(eq buffer (cdr (assq 'buffer tab)))))))
|
||
(tab (if pos
|
||
(if (and tab-line-switch-cycling (<= (length tabs) (1+ pos)))
|
||
(car tabs)
|
||
(nth (1+ pos) tabs))))
|
||
(buffer (if (bufferp tab) tab (cdr (assq 'buffer tab)))))
|
||
(when (bufferp buffer)
|
||
(switch-to-buffer buffer)))))))
|
||
|
||
|
||
(defcustom tab-line-close-tab-function 'bury-buffer
|
||
"What to do upon closing a tab on the tab line.
|
||
If `bury-buffer', put the tab's buffer at the end of the list of all
|
||
buffers, which effectively hides the buffer's tab from the tab line.
|
||
If `kill-buffer', kills the tab's buffer.
|
||
When a function, it is called with the tab as its argument.
|
||
This option is useful when `tab-line-tabs-function' has the value
|
||
`tab-line-tabs-window-buffers'."
|
||
:type '(choice (const :tag "Bury buffer" bury-buffer)
|
||
(const :tag "Kill buffer" kill-buffer)
|
||
(function :tag "Function"))
|
||
:group 'tab-line
|
||
:version "27.1")
|
||
|
||
(defun tab-line-close-tab (&optional event)
|
||
"Close the selected tab.
|
||
This command is usually invoked by clicking on the close button on the
|
||
right side of the tab. This command buries the buffer, so it goes out of
|
||
sight of the tab line."
|
||
(interactive (list last-nonmenu-event))
|
||
(when (tab-line-track-tap event)
|
||
(let* ((posnp (and (listp event)
|
||
(tab-line-event-start event)))
|
||
(window (and posnp (posn-window posnp)))
|
||
(tab (tab-line--get-tab-property 'tab (car (posn-string posnp))))
|
||
(buffer (if (bufferp tab) tab (cdr (assq 'buffer tab))))
|
||
(close-function (unless (bufferp tab) (cdr (assq 'close tab)))))
|
||
(with-selected-window (or window (selected-window))
|
||
(cond
|
||
((functionp close-function)
|
||
(funcall close-function))
|
||
((eq tab-line-close-tab-function 'kill-buffer)
|
||
(kill-buffer buffer))
|
||
((eq tab-line-close-tab-function 'bury-buffer)
|
||
(if (eq buffer (current-buffer))
|
||
(bury-buffer)
|
||
(set-window-prev-buffers nil (assq-delete-all buffer (window-prev-buffers)))
|
||
(set-window-next-buffers nil (delq buffer (window-next-buffers)))))
|
||
((functionp tab-line-close-tab-function)
|
||
(funcall tab-line-close-tab-function tab)))
|
||
(force-mode-line-update)))))
|
||
|
||
(defun tab-line-tab-context-menu (&optional event)
|
||
"Pop up the context menu for a tab-line tab."
|
||
(interactive "e")
|
||
(let ((menu (make-sparse-keymap (propertize "Context Menu" 'hide t))))
|
||
(define-key-after menu [close]
|
||
'(menu-item "Close" tab-line-close-tab :help "Close the tab"))
|
||
(popup-menu menu event)))
|
||
|
||
(defun tab-line-context-menu (&optional event)
|
||
"Pop up the context menu for the tab line."
|
||
(interactive "e")
|
||
(let ((menu (make-sparse-keymap (propertize "Context Menu" 'hide t))))
|
||
(define-key-after menu [close]
|
||
'(menu-item "New tab" tab-line-new-tab :help "Create a new tab"))
|
||
(popup-menu menu event)))
|
||
|
||
|
||
;;;###autoload
|
||
(define-minor-mode tab-line-mode
|
||
"Toggle display of tab line in the windows displaying the current buffer."
|
||
:lighter nil
|
||
(let ((default-value '(:eval (tab-line-format))))
|
||
(if tab-line-mode
|
||
;; Preserve the existing tab-line set outside of this mode
|
||
(unless tab-line-format
|
||
(setq tab-line-format default-value))
|
||
;; Reset only values set by this mode
|
||
(when (equal tab-line-format default-value)
|
||
(setq tab-line-format nil)))))
|
||
|
||
(defcustom tab-line-exclude-modes
|
||
'(completion-list-mode)
|
||
"List of major modes for which the tab-line display is not enabled.
|
||
Buffers under any of these major modes will not show the tab line in
|
||
their windows, even if `global-tab-line-mode' is enabled."
|
||
:type '(repeat symbol)
|
||
:group 'tab-line
|
||
:version "27.1")
|
||
|
||
;;;###autoload
|
||
(defvar-local tab-line-exclude nil)
|
||
|
||
(defun tab-line-mode--turn-on ()
|
||
"Turn on `tab-line-mode' in all pertinent buffers.
|
||
Temporary buffers, buffers whose names begin with a space, buffers
|
||
under major modes that are either mentioned in `tab-line-exclude-mode'
|
||
or have a non-nil `tab-line-exclude' property on their symbol,
|
||
and buffers that have a non-nil buffer-local value
|
||
of `tab-line-exclude', are exempt from `tab-line-mode'."
|
||
(unless (or (minibufferp)
|
||
(string-match-p "\\` " (buffer-name))
|
||
(memq major-mode tab-line-exclude-modes)
|
||
(get major-mode 'tab-line-exclude)
|
||
(buffer-local-value 'tab-line-exclude (current-buffer)))
|
||
(tab-line-mode 1)))
|
||
|
||
;;;###autoload
|
||
(define-globalized-minor-mode global-tab-line-mode
|
||
tab-line-mode tab-line-mode--turn-on
|
||
:group 'tab-line
|
||
:version "27.1")
|
||
|
||
|
||
(global-set-key [tab-line down-mouse-3] 'tab-line-context-menu)
|
||
|
||
(global-set-key [tab-line mouse-4] 'tab-line-hscroll-left)
|
||
(global-set-key [tab-line mouse-5] 'tab-line-hscroll-right)
|
||
(global-set-key [tab-line wheel-up] 'tab-line-hscroll-left)
|
||
(global-set-key [tab-line wheel-down] 'tab-line-hscroll-right)
|
||
(global-set-key [tab-line wheel-left] 'tab-line-hscroll-left)
|
||
(global-set-key [tab-line wheel-right] 'tab-line-hscroll-right)
|
||
|
||
(global-set-key [tab-line S-mouse-4] 'tab-line-switch-to-prev-tab)
|
||
(global-set-key [tab-line S-mouse-5] 'tab-line-switch-to-next-tab)
|
||
(global-set-key [tab-line S-wheel-up] 'tab-line-switch-to-prev-tab)
|
||
(global-set-key [tab-line S-wheel-down] 'tab-line-switch-to-next-tab)
|
||
(global-set-key [tab-line S-wheel-left] 'tab-line-switch-to-prev-tab)
|
||
(global-set-key [tab-line S-wheel-right] 'tab-line-switch-to-next-tab)
|
||
|
||
|
||
(provide 'tab-line)
|
||
;;; tab-line.el ends here
|