Enhanced constraint violation error dialog while saving edits

[sfkeller]

Let’s assume that before hand some constraints in the database - say not null, uniqueness, etc. - or even topology rules have been entered. Then the user captures some features with their geometry and a probably incomplete attribute values.

When leaving edit mode (or just issueing a validataion check-dialog) a modal dialog currently says that a number of constraints have been violated. There’s currently no chance to find out which features could be the cause.

Thus an enhanced modal dialog is proposed with a list of errors: every line indicates the feature id and a constraint violation text. When clicking on a line in the the dialog, the respective feature is highlighted and one can change to edit mode efficiently.