Sorry, we wouldn't add a toolbar button for that, at least until Zotero ever gains a customizable toolbar that allowed non-default buttons. It's just not a feature that's used in common Zotero workflows. Note that there's a keyboard shortcut you can use in addition to the menu item.
It is true my workflow is particular, so I understand. My use is for importing reports of the institution where I work, which have no public identifiers. The best workflow I came up with so far is to produce BibTeX items by scraping the webpage from where I download them using a JavaScript bookmark in Firefox, and then import them in Zotero. But looking for Opt+Shift+Cmd+I on the keyboard every time is a bit cumbersome.
At the same time, I'd be happy to see custom buttons on the toolbar!
I think both Zutilo and Zotero actions & tags would let you define a custom keyboard shortcut for this.
But also, as aborel says, a custom translator seems like a much better way of doing what you're trying to do -- translators are much, much less involved than plugins: https://www.zotero.org/support/dev/translators/coding
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It is true my workflow is particular, so I understand. My use is for importing reports of the institution where I work, which have no public identifiers. The best workflow I came up with so far is to produce BibTeX items by scraping the webpage from where I download them using a JavaScript bookmark in Firefox, and then import them in Zotero. But looking for Opt+Shift+Cmd+I on the keyboard every time is a bit cumbersome.
At the same time, I'd be happy to see custom buttons on the toolbar!
Thanks again
https://github.com/tplobo-fusion/IDM2BIBLATEX
I think a full plugin would take more time and knowledge than what I have.
But also, as aborel says, a custom translator seems like a much better way of doing what you're trying to do -- translators are much, much less involved than plugins:
https://www.zotero.org/support/dev/translators/coding