fix: do not dispatch zoom domain change event for all zoom bar behaviors

[hlyang397]

Updates

• Avoid to dispatching zoom domain change event for every zoom bar handle move

Demo screenshot or recording

No UI change

Review checklist (for reviewers only)

• Demos all features
• Documented/annotated
• Matches UI/UX specs
• Meets the code style guide
• Accessible
• Mobile first (responsive)
• RTL support (bidirectional text)
• Performant (limited bloat)

[theiliad]

@hlyang397 just wondering:

• Why would you want to dispatch events for every zoom domain change?
• Why would you not want to dispatch events for every zoom domain change?

[hlyang397]

@hlyang397 just wondering:

* Why would you `want` to dispatch events for every zoom domain change?

* Why would you `not want` to dispatch events for every zoom domain change?

@theiliad
For Events.ZoomDomain.CHANGE event, we should dispatch this event whenever the zoom domain changing is completed.
For example, the zoom-in button is clicked, the shift-clicking zoom in is triggered.
But when zoom bar handle is moving, the final zoom domain is not decided yet We should only dispatch Events.ZoomDomain.CHANGE when zoom bar selection is completed.
So user could listen to Events.ZoomDomain.CHANGE event to be notified whenever zoom domain is changed (not changing)

If user likes to track zoom bar handle movement, user could listen to Events.ZoomBar.SELECTION_XXX events.

Do I answer your question?

[theiliad]

@hlyang397 just wondering:

* Why would you `want` to dispatch events for every zoom domain change?

* Why would you `not want` to dispatch events for every zoom domain change?

@theiliad
For Events.ZoomDomain.CHANGE event, we should dispatch this event whenever the zoom domain changing is completed.
For example, the zoom-in button is clicked, the shift-clicking zoom in is triggered.
But when zoom bar handle is moving, the final zoom domain is not decided yet We should only dispatch Events.ZoomDomain.CHANGE when zoom bar selection is completed.
So user could listen to Events.ZoomDomain.CHANGE event to be notified whenever zoom domain is changed (not changing)

If user likes to track zoom bar handle movement, user could listen to Events.ZoomBar.SELECTION_XXX events.

Do I answer your question?

yes thank you!