[Epic] Image Browsing: Feature parity for MMV beta viewer
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Assigned To

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Authored By

	SherryYang-WMF
	Tue, Feb 17, 5:13 PM

Description

We want to bring the MMV beta viewer (mmv.ui.beta) to feature parity with the existing MobileFrontend mobile image viewer. This is a prerequisite for replacing the current mobile viewer and rolling out the Image Browsing feature to production (T410786).

Context

The MobileFrontend mobile image viewer is a relatively simple lightbox experience. The feature set is small, which means the road to parity should be short. Once parity is reached, the MobileFrontend viewer code (ImageCarousel, ImageGateway, overlay factory, and related Minerva init code) can be retired. The beta viewer PoC (T417675) provides a starting point: basic image display, progressive loading, adjacent image prefetching, and the adapter interface for MMV's bootstrap. This epic covers everything else needed to match the current mobile viewer's functionality.

Potential Subtasks

Specific subtasks for feature parity should be documented here after T418334 is complete.

Other subtasks we may need need include:

License info display (license short name, license link)
Other metadata display (author, caption, file page link, metadata toggle)
Download support at various sizes (see also T410952)
Error handling for failed image loads
Loading state / fallback indicator
Image exclusion handling (noviewer, non-photographic content filtering)
Detail view accessibility
Instrumentation (product health metrics?)

Out of scope

Touch gestures (pinch-to-zoom, swipe navigation) — potential fast-follow
Share functionality — new feature beyond parity
Carousel component (T417679)
Desktop viewer changes

Details

Other Assignee: JScherer-WMF

Related Objects
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Status	Subtype	Assigned	Task
Open	Feature	None	T410786 [Epic] Mobile Image Browsing on article pages
Open		None	T417678 [Epic] Image Browsing: Feature parity for MMV beta viewer
Open		egardner	T417675 Image Browsing: Add a new beta viewer module (mobile-only) to MMV
Open		None	T410952 Image Browsing: Detail view download sizes should be configurable and align small sizes with wgThumbLimits
Open	Spike	KSarabia-WMF	T418334 [Spike] Document MobileFrontend mobile image viewer's complete feature set
Open		JScherer-WMF	T418382 [DESIGN] Baseline MMV beta viewer design

Event Timeline

SherryYang-WMF created this task.Tue, Feb 17, 5:13 PM

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptTue, Feb 17, 5:13 PM

SherryYang-WMF triaged this task as High priority.Tue, Feb 17, 5:16 PM

SherryYang-WMF added a project: Reader Growth Team.

SherryYang-WMF moved this task from Incoming/Inbox to Sprint 3 (Feb 17 - Mar 2) Q3 25/26 on the Reader Growth Team board.

SherryYang-WMF edited projects, added Reader Growth Team (Sprint 3 (Feb 17 - Mar 2) Q3 25/26); removed Reader Growth Team.

Aklapper added a project: ReaderExperiments-ImageBrowsing.Tue, Feb 17, 5:55 PM

SherryYang-WMF updated the task description. (Show Details)Tue, Feb 17, 6:07 PM

SherryYang-WMF set the point value for this task to 5.

SherryYang-WMF updated Other Assignee, added: JScherer-WMF.

egardner moved this task from Committed to Doing on the Reader Growth Team (Sprint 3 (Feb 17 - Mar 2) Q3 25/26) board.Wed, Feb 18, 5:10 PM

egardner mentioned this in T417675: Image Browsing: Add a new beta viewer module (mobile-only) to MMV.Wed, Feb 25, 12:03 AM

Note – this task will probably be converted into a "sub-epic" or milestone task under T410786. Additional specific requirements for feature parity can then be defined as subtasks under this one.

egardner renamed this task from [Image Browsing] feature parity with the legacy mobile viewer to [Epic] Image Browsing: Feature parity for MMV beta viewer.Wed, Feb 25, 4:10 AM

egardner updated the task description. (Show Details)

Restricted Application added a project: Epic. · View Herald TranscriptWed, Feb 25, 4:10 AM

egardner moved this task from Sprint 3 (Feb 17 - Mar 2) Q3 25/26 to Needs Refinement on the Reader Growth Team board.Wed, Feb 25, 4:11 AM

egardner edited projects, added Reader Growth Team; removed Reader Growth Team (Sprint 3 (Feb 17 - Mar 2) Q3 25/26).

egardner removed the point value 5 for this task.

egardner moved this task from Needs Refinement to Backlog on the Reader Growth Team board.

egardner added a parent task: T410786: [Epic] Mobile Image Browsing on article pages.Wed, Feb 25, 4:16 AM

egardner mentioned this in T417679: [Epic] Image Browsing: Add a carousel component at the top of mobile article pages.

egardner added a subtask: T417675: Image Browsing: Add a new beta viewer module (mobile-only) to MMV.Wed, Feb 25, 4:20 AM

egardner added a subtask: T410952: Image Browsing: Detail view download sizes should be configurable and align small sizes with wgThumbLimits.

egardner updated the task description. (Show Details)Wed, Feb 25, 4:39 AM

egardner created subtask T418334: [Spike] Document MobileFrontend mobile image viewer's complete feature set.Wed, Feb 25, 4:55 AM