I want a widget which would be displayed as a small scrollbox with some content when collapsed and full text (without scroll) when expanded.
Also it should be resizeable by mouse.
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Currently this task does not explain well why this task was created. It describes a solution to an underlying problem that still needs to get defined. Knowing the background of the request in this task might provide better insight and lead to better solutions.
Also, which project is this about? Is this about MediaWiki core, or some extension?
Please see https://mediawiki.org/wiki/How_to_report_a_bug for future tasks. Thanks!
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The "underlying problem" is to reduce long text (or images) fragments into small (scrollable) space but with the possibility to expand to show the full text (without scrolling) when required or desired.
https://en.wikipedia.org/wiki/Template:Scroll_box shows a way to create a scrollbox, but it missed the "expand" button to show the entire text of the area (without scrolling).
Template:Scroll_box seems to be a MediaWiki core feature.