New note page on low zooms #5443
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This function works both with newNoteMarker and the passed marker, however the passed marker is always newNoteMarker.
This function doesn't update any existing marker.
This function adds a marker to notes layer. This controller doesn't need to do anything with markers of existing notes.
We want the new note marker in the same layer with its halo. Also we don't want to put anything in noteLayer because it clears its contents on certain zoom levels.
newHalo() wasn't always creating new halos. It had an event type argument that was checked against drag event. Depending on this check, newHalo() could remove the halo.
This ensures that marker is always added/removed together with its halo.
It was also called from noteCreated() but that triggered page.unload() via OSM.router.route().
Same reasons as in the previous commit.
Note that addNoteButton.hasClass("active") check in page.load is useless because page.unload removes this class.
If not done, it's possible to lose the marker when starting from low zooms.
AntonKhorev
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If
/note/newwhile your zoom is too low as described in low zoom URLs for adding a note handled badly #1291/note/new,show a warning message and disable the submit button.
Fixes #1291 and another bug: note marker was disappearing together with notes layer when visible area became too large.