The current global hider of these layers
Get the symbol which is attached to an item prior to its removal. If an item is removed, the current index of the item is set on the item with this symbol.
The key by which to check uniqueness against. undefined if no uniqueness constraint is set.
A symbol to describe the local z index of a layer. The local z index must not equal the layers z index, but is always consistent in comparison to the neighbouring layers. If a layer is moved other then by z index, the collection ensures consistency by setting a new local z index if needed.
Protected_Protected_Protected_Protectedinternal remove function, to remove an item from the collection, does not raise an event.
returns the index of the removed item or -1 if the item has not been found.
Adds a layer to the collection. Can optionally be passed an index at which to insert the layer. The layer locale will be set to the same locale of the layerCollection. This will trigger a forceRedraw of the layer if the layer locale is different and the layer is locale aware.
Optionalindex: numberreturns the layer index or null, if the layers name is not unique
clears the array
Destroys the collection, clearing the array and all its events
Returns an item identified by the unique constraint key. Returns null, if there is no uniqueness constraint.
the value to test against. does a shallow comparison, if the passed a non-atomic value
Returns true, if the key exists. Returns undefined, if there is no uniqueness constraint.
Returns the index of an item or -1 if it is not part of this collection
Returns the index of a key. Returns undefined, if there is no uniqueness constraint
Lowers an item within the array
Optionalsteps: number = 1an integer number to lower by
the new index of the item
Moves an item to a provided index
the new index of the item
Raises an item within the array
Optionalsteps: number = 1an integer number to lower by
the new index of the item
StaticfromCreates a LayerCollection from an iterable of layers, such as an Array.
Optionaliterable: Iterable<Layer<LayerImplementation<VcsMap<VisualisationType>>>, any, any>Protected_Event raised if an item is added. Is passed the added item.
The exclusive manager for this collection. Layers within this collection are automatically added and tracked.
Event raised if an item is relocated within the collection. Is passed the moved item.
Event raised if an item is removed. Is passed the removed item.
Event raised, when a layer of this collection changes its state. Passed the layer.
A collection of layers. Manages rendering order and layer exclusivity. Emits state changes for convenience. Passed to Map for layers available to said map. Layers must have unique names.