diff options
| -rw-r--r-- | elisp/geiser-doc.el | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/elisp/geiser-doc.el b/elisp/geiser-doc.el index eec0577..a25dd96 100644 --- a/elisp/geiser-doc.el +++ b/elisp/geiser-doc.el @@ -65,6 +65,12 @@ help (e.g. browse an HTML page) implementing this method.") (defsubst geiser-doc--history-current () (car geiser-doc--history)) +(defsubst geiser-doc--history-previous-link () + (ring-ref (cadr geiser-doc--history) 0)) + +(defsubst geiser-doc--history-next-link () + (ring-ref (caddr geiser-doc--history) 0)) + (defun geiser-doc--history-push (link) (unless (or (null link) (equal link (geiser-doc--history-current))) (when (not (null (geiser-doc--history-current))) @@ -183,6 +189,19 @@ help (e.g. browse an HTML page) implementing this method.") (insert " ")) (geiser-doc--insert-xbutton)) +(defun geiser-doc--insert-nav-button (next) + (let* ((lnk (if next (geiser-doc--history-next-link) + (geiser-doc--history-previous-link))) + (what (geiser-doc--link-target lnk)) + (what (or what (geiser-doc--link-module lnk))) + (action (if next '(lambda (b) (geiser-doc-next)) + '(lambda (b) (geiser-doc-previous))))) + (insert-text-button (if next "[forward]" "[back]") + 'action action + 'help-echo (format "Previous help item (%s)" what) + 'face 'geiser-font-lock-doc-button + 'follow-link t))) + ;;; Auxiliary functions: @@ -234,18 +253,10 @@ help (e.g. browse an HTML page) implementing this method.") (when (or prev nxt) (insert (make-string len ?\ ))) (when prev - (insert-text-button "[back]" - 'action '(lambda (b) (geiser-doc-previous)) - 'help-echo "Previous help item" - 'face 'geiser-font-lock-doc-button - 'follow-link t) + (geiser-doc--insert-nav-button nil) (insert " ")) (when nxt - (insert-text-button "[forward]" - 'action '(lambda (b) (geiser-doc-next)) - 'help-echo "Next help item" - 'face 'geiser-font-lock-doc-button - 'follow-link t)))) + (geiser-doc--insert-nav-button t)))) ;;; Commands: |