@geoblocks/ol-comfy

    Class LayerGroup

    Parent (abstract) class for a layer group. Helps to manipulate one layer group. The child class must start by setting the layerGroup.

    Hierarchy (View Summary)

    Index

    Constructors

    constructor

    Properties

    layerAffected layerPropertyChanged

    Methods

    addLayer clearAll emitLayerAffected emitLayerPropertyChanged getAllSources getAttributions getLayer getLayerGroup refreshSource

    Constructors

    Properties

    layerAffected: Subject<LayerAffected>

    To provide changed-like-event, without touching the original layer. With source layer uid and free reason why/by/for it's emitted. Example: emit/listen to silently set layer opacity (as reason) without touching the real layer and having to listen to every layer individually.

    layerPropertyChanged: Subject<LayerPropertyChanged>

    Event to observe layer property change in this LayerGroup without the need of having the layer itself.

    Methods

    • Add a single layer at the end of the layer group.

      Parameters

      • layer: BaseLayer

        Ol layer.

      • layerUid: string

        id of the layer.

      Returns void

    • Remove all layers from the map and clear the layer group.

      Returns void

    • Emit an "affected" layer event.

      Parameters

      • layerUid: string
      • reason: string

      Returns void

    • Emits a "LayerPropertyChanged" and call a "changed" event on the matching OL layer.

      Parameters

      • layerUid: string
      • propertyKey: string

      Returns void

    • Returns Source[]

      Every source from layers having sources in the layer group.

    • Retrieve a layer currently in the layer group.

      Parameters

      • layerUid: string

      Returns null | BaseLayer

      The matching layer or null.

    • Refresh the source of every layer with a source in the layer group.

      Returns void

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