#10684: Legend filtering for GeoServer WMS layers

[dsuren1]

Description

This PR implements legend filtering of the WMS layer including both the formats (image and json). Incorporates filtering factoring map extents and additional layer filter and interactions between them. Applicable for both 2D and 3D map along with legend widget. Implement reset legend when filter are incompatible

Please check if the PR fulfills these requirements

• The commit message follows our guidelines: https://github.com/geosolutions-it/MapStore2/blob/master/CONTRIBUTING.md
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce? (check one with "x", remove the others)

• Enhancement

Issue

What is the current behavior?

• Legend filtering for GeoServer WMS layers #10684
• Interaction between the Legend filter and the Layer filter #10241
• Legend filter is persisted while editing a style causing inconsistencies #10236

What is the new behavior?

• Layer and legend filtering

  legend_filtering.mp4

• Legend filtering in printing

  

• Applies to dashboard legend widget

• Applicable for both 2D and 3D map

Breaking change

Does this PR introduce a breaking change? (check one with "x", remove the other)

• Yes, and I documented them in migration notes
• No

Other useful information

[allyoucanmap]

The warning message is showing up also in the following conditions:

• the map view extent does not contain the visible layer features. This is more complex to detect

warning-message-legend-2.mp4

• the filter button is deactivated (the one inline with the layer TOC node). In this case the message should be avoided completely because legend filters are not applicable

warning-message-legend.mp4

@tdipisa @dsuren1 I think for the moment we could solve the second point when deactivated the message should never show up. The first point is technically correct but maybe the message could be misleading

[dsuren1]

@allyoucanmap @tdipisa

The first point is technically correct but maybe the message could be misleading

shall we modify the warning text to either of this?

Applied legend filters are incompatible with the active layer filter, or the map view extent does not contain visible layer features. Click on reset to remove legend filters

or

Legend filters are incompatible with the active layer filter, or no visible features are within the map view. Click reset to clear legend filters.

[allyoucanmap]

Legend filters are incompatible with the active layer filter, or no visible features are within the map view. Click reset to clear legend filters.

@dsuren1 this seems fine