WFSFilterBuilder - bug - can clear filters without selection

[adube]

Issue

In the WFSFilterBuilder widget, it is possible to click the "clear filters" button when no layer is selected yet, which triggers a request.

Solutions

We could do one of the following :

• Disable the button until we select something.
• Do the above, plus : enable/disable the button when a new filter was applied or reset
• Check if a layer is selected before clearing

Any more thoughts are welcome.

[fgagnon]

This patch disable the reset filters button on startup

[fgagnon]

This patch disable the "Reset all filters" button until a layer is selected, preventing an invalid (and unnecessary) request.

Enabling and disabling the button depending on filters statuses is error-prone due to diversing sources and behavior of the multiple filters controls, thus this was ommited. However, if this is a concern, there should be no technical barrier to accomplish this.

[adube]

The patch works for me. Commit in r1153.