[PATCH] JOSM allows manipulation of objects on hidden layers

[dieterdreist]

When the data layer visibility is turned off, JOSM still moves nodes on mouse actions (and probably on keyboard actions as well)

[dieterdreist]

it would be better not to perform any action on hidden layers. (E.g. you forgot to change to another layer, which is visible, and then you are unwillingly moving nodes of the still selected invisible layer and wondering, why nothing happens).

[xeen]

This disables the following when the layer is not active: Any clicks when in select, delete, extrude mode and also disables Edit -> Delete (none of those visually, they just don't work). It doesn't disable drawing though because I use that very often when adding additional stuff via WMS in an already good mapped area to net get distracted.

[stoecker]

Applied in r1418.