Class MapElement

Custom element hosting an interactive map component.

Importing the package root registers this class as <kayahr-map>. Declarative attributes are parsed atomically and applied to the fixed component returned by getComponent. The open Shadow DOM contains the map Canvas followed by a layer container with the default slot.

Map attributes:

• attribution-prefix: Trusted HTML displayed before the source attribution. Set it to false to omit the prefix.
• center-x and center-y: Source X and Y coordinates. They must be used together and default to the projected tile-world center.
• zoom: Initial continuous view zoom. Defaults to one level above the effective minimum.
• min-zoom and max-zoom: Continuous view limits. They default to the native tile-source limits but may extend beyond them.
• cover-viewport: Whether to raise the effective minimum zoom until tile coverage fills the viewport. Defaults to true.
• cache-size: Positive integer ready-tile cache capacity. Defaults to 512.
• source: JSON object describing a custom TileSource. Omit the attribute to use OpenStreetMap. Its projection is web-mercator, linear or an object containing type: "linear" and optional edges.

Any slotted child becomes an absolutely positioned HTML overlay. The built-in attribution exposes the CSS shadow part attribution.