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Fix and simplify detection of selected window #134

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Fix and simplify detection of selected window #134

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41 changes: 6 additions & 35 deletions powerline.el
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Original file line number Diff line number Diff line change
Expand Up @@ -493,44 +493,15 @@ static char * %s[] = {

(defvar pl/default-mode-line mode-line-format)

(defvar pl/minibuffer-selected-window-list '())

(defun pl/minibuffer-selected-window ()
"Return the selected window when entereing the minibuffer."
(when pl/minibuffer-selected-window-list
(car pl/minibuffer-selected-window-list)))

(defun pl/minibuffer-setup ()
"Save the `minibuffer-selected-window' to `pl/minibuffer-selected-window'."
(push (minibuffer-selected-window) pl/minibuffer-selected-window-list))

(add-hook 'minibuffer-setup-hook 'pl/minibuffer-setup)

(defun pl/minibuffer-exit ()
"Set `pl/minibuffer-selected-window' to nil."
(pop pl/minibuffer-selected-window-list))

(add-hook 'minibuffer-exit-hook 'pl/minibuffer-exit)

(defvar powerline-selected-window (frame-selected-window))
(defun powerline-set-selected-window ()
"sets the variable `powerline-selected-window` appropriately"
(when (not (minibuffer-window-active-p (frame-selected-window)))
(setq powerline-selected-window (frame-selected-window))))

(defun powerline-unset-selected-window ()
"Unsets the variable `powerline-selected-window` and updates the modeline"
(setq powerline-selected-window nil)
(force-mode-line-update))

(add-hook 'window-configuration-change-hook 'powerline-set-selected-window)

;; focus-in-hook was introduced in emacs v24.4.
;; Gets evaluated in the last frame's environment.
(add-hook 'focus-in-hook 'powerline-set-selected-window)

;; focus-out-hook was introduced in emacs v24.4.
(add-hook 'focus-out-hook 'powerline-unset-selected-window)
(let ((w (if (eq (active-minibuffer-window) (selected-window))
(minibuffer-selected-window)
(selected-window))))
(unless (eq powerline-selected-window w)
(setq powerline-selected-window w)
(force-mode-line-update t))))

;; Executes after the window manager requests that the user's events
;; be directed to a different frame.
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