;; ivy設定
(use-package ivy
  :ensure t
  :config
  (ivy-mode 1))
(ivy-mode 1)
(setq ivy-use-virtual-buffers t)
(setq enable-recursive-minibuffers t)
(setq ivy-height 30) ;; minibufferのサイズを拡大！（重要）
(setq ivy-extra-directories nil)
(setq ivy-re-builders-alist
      '((t . ivy--regex-plus)))

(require 'company)
(global-company-mode) ; 全バッファで有効にする
(setq company-transformers '(company-sort-by-backend-importance)) ;; ソート順
(setq company-idle-delay 0.0) ; デフォルトは0.5
(setq company-minimum-prefix-length 2) ; デフォルトは4
(setq company-selection-wrap-around t) ; 候補の一番下でさらに下に行こうとすると一番上に戻る
(setq completion-ignore-case t)
(setq company-dabbrev-downcase nil)
(global-set-key (kbd "C-M-i") 'company-complete)
(define-key company-active-map (kbd "C-n") 'company-select-next) ;; C-n, C-pで補完候補を次/前の候補を選択
(define-key company-active-map (kbd "C-p") 'company-select-previous)
(define-key company-search-map (kbd "C-n") 'company-select-next)
(define-key company-search-map (kbd "C-p") 'company-select-previous)
(define-key company-active-map (kbd "C-s") 'company-filter-candidates) ;; C-sで絞り込む
(define-key company-active-map (kbd "C-i") 'company-complete-selection) ;; TABで候補を設定
(define-key company-active-map [tab] 'company-complete-selection) ;; TABで候補を設定
(define-key company-active-map (kbd "C-f") 'company-complete-selection) ;; C-fで候補を設定
(define-key emacs-lisp-mode-map (kbd "C-M-i") 'company-complete) ;; 各種メジャーモードでも C-M-iで company-modeの補完を使う

;; yasnippetとの連携
(defvar company-mode/enable-yas t
  "Enable yasnippet for all backends.")
(defun company-mode/backend-with-yas (backend)
  (if (or (not company-mode/enable-yas) (and (listp backend) (member 'company-yasnippet backend)))
      backend
    (append (if (consp backend) backend (list backend))
            '(:with company-yasnippet))))
(setq company-backends (mapcar #'company-mode/backend-with-yas company-backends))