Drag&Drop to get _canonical_uri of dragged photo?

[Gordan Nia]

Hello,

does it possible to get _canonical_uri value of external photo in a tiddler by drag&drop (or import as a tiddler with _canonical_uri)?    I don't want import photo as a new tiddler, but only reference to the photo (_canonical_uri).

How to make it, any idea?

Thanks,

Gordan

[Mark S.]

I believe you can do something like this with the external file plugin on TiddlyDesktop.

The full file name and path is unavailable to the browser thanks to security precautions.

[Michael Wiktowy]

Hi Gordan,

I don't know of a generic built-in way but you can create a macro to have an area (the tag image in this case) defined as a droppable zone that generates a tiddler (transparently in the background ... look in Resent tab) for you when you drag a URL over and drop it on the area. The mime-type text/html seemed the most generic to handle most URLs that you'd drag over but it puts a big frame around the embedded stuff. You can change that to something more specific to allow TiddlyWiki to treat the external resource in a more integrated manner.

Just cut and paste the following into your own wiki and adapt as needed.

\define droppable-canonical()
<$fieldmangler tiddler=<<actionTiddler>>>
<$action-setfield $tiddler=<<actionTiddler>> $field="_canonical_uri" $value=<<actionTiddler>>/>
<$action-setfield $tiddler=<<actionTiddler>> $field="type" $value="text/html"/>
</$fieldmangler>
\end
 
''Usage:'' This a small macro to add a droppable area in a tiddler to import externally dragged URLs into TiddlyWiki as a canonical-url externally stored resource.
 
Droppable Image (drag a URL on top of the image):
<$droppable actions=<<droppable-canonical>>>
{{$:/core/images/new-here-button}}
</$droppable>

Enjoy,

/Mike

[Gordan Nia]

Thanks Mike!

That's good idea, it works! But, I have an additional question:

1) I don't want drag an URL of a photo, but the photo directly, e.g. sometning.jpg from desktop or a folder to TW in order to get the _canonical_uri in your way. What I have to change/add in your code? (I'm not an expert in that area).

Thank you very much!

[Michael Wiktowy]

Unfortunately this has limits. As Mark pointed out, the browser blocks file:// type URLs. So your resources would need to be online somewhere.

/Mike

[Mark S.]

To repeat, you can do this in TiddlyDesktop with the External Attachments Support plugin installed.

[si]

Hi Mark,

Thanks for mentioning the External Attachments plugin - I didn't know it existed.

I tried it and it works for images but not for audio. Do you happen to know if there's anything I can do to get it working for audio?

[Gordan Nia]

Thanks everyone!

Regards,

Gordan

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 GordaN

[Mark S.]

I just tried it, and it worked for an MP3 file.

[si]

Hmm that's weird. I tried dragging and dropping an mp3 file and it just gets imported into the wiki as it would without the plugin. Whereas when I do the exact same thing with png it creates a _canonical_uri tiddler.

This is all on a freshly downloaded empty wiki, with only the External Attachments plugin installed.

Do you mind if ask which OS you are using TiddlyDesktop with? I've tried it on both 32 and 64 bit Windows.