130 lines
5.2 KiB
EmacsLisp
130 lines
5.2 KiB
EmacsLisp
;;; eyepersp.el --- Isolate `eyebrowse' windows in perspectives.
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;;
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;; Copyright (C) 2019 Wojciech Kozlowski
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;;
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;; Author: Wojciech Kozlowski <wk@wojciechkozlowski.eu>
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;; Created: 2019-12-18
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;;
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;; This file is not part of GNU Emacs.
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;;
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;;; Commentary:
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;;
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;; Be default `perspective' and `eyebrowse' do not know about each other which
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;; means that window configurations are saved across perspectives. This is not
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;; only undesirable, but also problematic, because perspectives isolate
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;; buffers, but window configurations do not. This module resolves this by
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;; creating an isolated set of `eyebrowse' configurations for each perspective.
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;;
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;;; License: GPLv3
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;;; Code:
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(require 'perspective)
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(require 'eyebrowse)
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(defvar eyepersp/perspectives nil)
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(defun eyepersp/get-persp-parameters (persp)
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"Return alist of parameters for perspective PERSP."
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(assoc persp eyepersp/perspectives))
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(defun eyepersp/delete-persp-parameters (persp)
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"Delete PERSP state."
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(assoc-delete-all persp eyepersp/perspectives))
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(defun eyepersp/persp-parameter-cons (param-name persp)
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"Return the cons for PARAM-NAME for perspective PERSP.
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If none was set, returns nil."
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(assoc param-name (eyepersp/get-persp-parameters persp)))
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(defun eyepersp/persp-parameter (param-name persp)
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"Return value of PARAM-NAME for perspective PERSP.
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If none was set, returns nil."
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(cdr (eyepersp/persp-parameter-cons param-name persp)))
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(defun eyepersp/set-persp-parameter (param-name value persp)
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"Set PARAM-NAME to VALUE for perspective PERSP."
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(let ((param (eyepersp/persp-parameter-cons param-name persp)))
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(when (not param)
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(let ((persp-params (eyepersp/get-persp-parameters persp)))
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(when (not persp-params)
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(setq eyepersp/perspectives
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(cons `(,persp . nil) eyepersp/perspectives))
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(setq persp-params (car eyepersp/perspectives)))
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(setcdr persp-params
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(cons `(,param-name . nil) (cdr persp-params)))
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(setq param (cadr persp-params))))
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(setcdr param value)))
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(defun eyepersp/get-persp-workspace (&optional persp)
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"Get the correct workspace parameters for perspective.
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PERSP is the perspective, and defaults to the current
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perspective."
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(or persp (setq persp (persp-curr)))
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(let ((param-names '(eyepersp-eyebrowse-window-configs
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eyepersp-eyebrowse-current-slot
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eyepersp-eyebrowse-last-slot)))
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(--map (eyepersp/persp-parameter it persp) param-names)))
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(defun eyepersp/set-persp-workspace (workspace-params &optional persp)
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"Set workspace parameters for perspective.
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WORKSPACE-PARAMS should be a list containing 3 elements in
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this order:
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- window-configs, as returned by (eyebrowse--get 'window-configs)
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- current-slot, as returned by (eyebrowse--get 'current-slot)
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- last-slot, as returned by (eyebrowse--get 'last-slot)
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PERSP is the perspective, and defaults to the current
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perspective."
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(or persp (setq persp (persp-curr)))
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(let ((param-names '(eyepersp-eyebrowse-window-configs
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eyepersp-eyebrowse-current-slot
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eyepersp-eyebrowse-last-slot)))
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(--zip-with (eyepersp/set-persp-parameter it other persp)
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param-names workspace-params)))
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(defun eyepersp/load-eyebrowse-for-perspective ()
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"Load an eyebrowse workspace according to a perspective's parameters.
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If the perspective doesn't have a workspace, create one."
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(let* ((workspace-params (eyepersp/get-persp-workspace))
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(window-configs (nth 0 workspace-params))
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(current-slot (nth 1 workspace-params))
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(last-slot (nth 2 workspace-params)))
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(if window-configs
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(progn
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(eyebrowse--set 'window-configs window-configs)
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(eyebrowse--set 'current-slot current-slot)
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(eyebrowse--set 'last-slot last-slot)
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(eyebrowse--load-window-config current-slot))
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(eyebrowse--set 'window-configs nil)
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(eyebrowse-init)
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(eyepersp/save-eyebrowse-for-perspective))))
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(defun eyepersp/update-eyebrowse-for-perspective (&rest _args)
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"Update and save current frame's eyebrowse workspace to its perspective."
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(let* ((current-slot (eyebrowse--get 'current-slot))
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(current-tag (nth 2 (assoc current-slot
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(eyebrowse--get 'window-configs)))))
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(eyebrowse--update-window-config-element
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(eyebrowse--current-window-config current-slot current-tag)))
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(eyepersp/save-eyebrowse-for-perspective))
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(defun eyepersp/save-eyebrowse-for-perspective ()
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"Save FRAME's eyebrowse workspace to FRAME's perspective.
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FRAME defaults to the current frame."
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(eyepersp/set-persp-workspace (list (eyebrowse--get 'window-configs)
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(eyebrowse--get 'current-slot)
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(eyebrowse--get 'last-slot))
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(persp-curr)))
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(add-hook 'persp-before-switch-hook
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#'eyepersp/update-eyebrowse-for-perspective)
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(add-hook 'eyebrowse-post-window-switch-hook
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#'eyepersp/save-eyebrowse-for-perspective)
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(add-hook 'persp-activated-hook
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#'eyepersp/load-eyebrowse-for-perspective)
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(add-hook 'persp-killed-hook
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(lambda () (eyepersp/delete-persp-parameters (persp-curr))))
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(provide 'eyepersp)
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;;; eyepersp.el ends here
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