Cloud tags selector

[kirillt]

When maximized, tags selector should be capable of switching into alternative mode visually representing tags as a cloud. This mode will be called cloud selector and normal mode will be called linear selector.

Both modes should operate on the same internal state, only visual representation should differ. Cloud selector allows to use more than 1 metric for ordering tags. The same as linear selector, cloud selector must hide or gray-out tags which are not actual with the current query.

In cloud selector, tags can have different sizes to represent some metric.

Cloud tags selector itself can come in 2 flavors:

• 2D cloud has 2 dimensions: size of a tag, and distance from center
• 3D cloud has 2 dimensions: horizontal, vertical and size of a tag.

[kirillt]

E.g. size of a tag could mean it's popularity or value of some other metric.

Recently, we've discovered this lib which could be used to implement cloud view:
https://github.com/oleksandrbalan/tagcloud

It might require some adaptation: either we force user to scroll the sphere or we draw tags only on semisphere and disable sphere scrolling.