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Re: [O] clickable text in org-mode not working (Sebastien Vauban)

From: John Kitchin
Subject: Re: [O] clickable text in org-mode not working (Sebastien Vauban)
Date: Tue, 13 Nov 2012 13:24:57 -0500

I was just learning about programming interactive features into emacs
buffers, and something that worked in one major mode did not work in
org-mode. I have narrowed it down to an effect of font-lock-mode. When
that is off, the mouse-clicking works fine, when it is on, the font
syntax highlighting works fine, but not the clicking in org-mode.

In terms of usage, I could see this as a way to automatically make
"links" out of different words, or in a related application to overlay
tooltips on specific words without having to markup the org-file. In
essence, moving some markup to a lisp file that is run before opening
the org-file.

I am familiar with `org-add-link-type' and have used that to do some
pretty cool things, as well as the elisp and shell links. With the
clickable text code I described, you can actually do different things
with different mouse clicks, including different mouse buttons, and
presumably on mouse button up events. It is not obvious that can be
done with `org-add-link-type'; you get the same behavior with any
mouse button click. I havent advanced to a point where I could get
emacs-lisp to tell me which mouse event occurred on clicking on a
link. That seems possible though.


> Message: 34
> Date: Tue, 13 Nov 2012 09:50:19 +0100
> From: "Sebastien Vauban" <address@hidden>
> To: address@hidden
> Subject: Re: [O] clickable text in org-mode not working
> Message-ID: <address@hidden>
> Content-Type: text/plain
> Hello John,
> John Kitchin wrote:
>> It appears that one cannot define "clickable" text in org-mode. I was
>> trying to make some text in an org-file respond to different types of
>> clicking. I know that links provide some functionality for this, but
>> out of curiosity I wanted to see what else I could do.
>> If I run the following code on a buffer in text-mode, the first four
>> characters in the buffer turn blue with a white background, they turn
>> a light green when the mouse is over them, and finally a message box
>> pops up when I click on the characters.
>> (let ((map (make-sparse-keymap)))
>>      (define-key map (kbd "<down-mouse-1>")
>>             '(lambda() (interactive) (message-box "it works!")))
>>      (add-text-properties 1 5 `(keymap, map
>>                                 font-lock-face (:foreground "blue"
>>                                                 :background "white")
>>                                 mouse-face highlight)))
>> If I switch to org-mode, the clickability and mouse highlighting go
>> away. They also do not appear when I run the function in an
>> org-buffer.
>> Does anyone know if there is a feature in org-mode that turns this
>> off, or if there is a way to get the clickability to work? Is it
>> related to having links that are clickable?
> I'm not sure to understand your use case -- why do you want clickable text in
> the first place (other than links)?
> But, did you look at `org-add-link-type' which does allow some kind of
> powerful stuff (mainly for export, but can maybe be diverted from its original
> purpose)?
> I guess you also are aware of the elisp and shell links you can already put in
> any Org file, as clickable "buttons"?
> Best regards,
>   Seb
> --
> Sebastien Vauban

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