The RevisionSlider extension adds a slider interface to the diff view, so that you can easily move between revisions.
RevisionSlider folder to your extensions/ directory.cd extensions/ git clone https://gerrit.wikimedia.org/r/mediawiki/extensions/RevisionSlider
wfLoadExtension( 'RevisionSlider' );
When on a diff page, the slider is collapsed by default and only a narrow bar labelled "Browse history" is visible at the top of the page. Click on that bar to expand the RevisionSlider.
Once expanded, the RevisionSlider fetches data about the revisions and allows you to navigate and compare revisions on the diff page.
Each bar represents a page revision.
Bars on the top show growth in size of the page, bars on the bottom show a reduction.
In the image, revision 1 represents added content, while revision 2 represents removal of content.
To select the revisions you want to compare, use the yellow and blue knobs. The blue knob controls the newer revision, the yellow knob maps to the older revision.
There are several ways to do this:If you move the blue knob to a position left of the yellow knob, the yellow knob is automatically moved along, and vice versa if you move the yellow knob to a position right of the blue knob.
Use the backward and forward arrows to move through revision history and show older and newer revisions.
If you are not using the RevisionSlider at all and also don't want to see the collapsed RevisionSlider bar at the top of the diff page, you can opt-out by checking "Don't show the revision slider" in your preferences under "Appearance" → "Diffs".
Technical Background[edit]The RevisionSlider uses AJAX to reload the diff page when new revisions are selected. Once the page has been reloaded both the wikipage.content and wikipage.diff hooks are fired. If user JavaScript or extension JavaScript acts on the diff page you may need to listen to these hooks.
Examples
Unless expanded, the tool is not doing any API calls. Only when the user expands the slider, it fetches data about revisions (revision-id, timestamp, user, comment, size and flags). The tool only fetches data for revisions that are currently visible on the screen (maximum 500 revisions) and data about additional revisions is only loaded when the user navigates back or forth on the timeline using the arrows.
The RevisionSlider[1] is a feature to fulfill one of the top wishes of the German Community wishlist[2] and is developed by WMDE's TCB team. It is inspired by DerHexer's revisionjumper gadget and based on a prototype by the WMF Community Tech team.
Notes (for rather technical audience) on RTL issues discovered while developing the extension have been published on the separate subpage.
This extension is being used on one or more Wikimedia projects. This probably means that the extension is stable and works well enough to be used by such high-traffic websites. Look for this extension's name in Wikimedia's CommonSettings.php and InitialiseSettings.php configuration files to see where it's installed. A full list of the extensions installed on a particular wiki can be seen on the wiki's Special:Version page. This extension is included in the following wiki farms/hosts and/or packages: This is not an authoritative list. Some wiki farms/hosts and/or packages may contain this extension even if they are not listed here. Always check with your wiki farms/hosts or bundle to confirm.RetroSearch is an open source project built by @garambo | Open a GitHub Issue
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