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OpenLayers v10.6.1 API - Class: Source

This documentation is for OpenLayers v

. The

is v

.

import Source from 'ol/source/Source.js';

Abstract base class; normally only used for creating subclasses and not instantiated in apps. Base class for Layer sources.

A generic change event is triggered when the state of the source changes.

Name Type Description attributions AttributionLike | undefined

Attributions.

attributionsCollapsible boolean (defaults to true)

Attributions are collapsible.

projection ProjectionLike | undefined

Projection. Default is the view projection.

state State (defaults to 'ready')

State.

wrapX boolean (defaults to false)

WrapX.

interpolate boolean (defaults to false)

Use interpolated values when resampling. By default, the nearest neighbor is used when resampling.

Fires:

• change (BaseEvent) - Generic change event. Triggered when the revision counter is increased.
• error (BaseEvent) - Generic error event. Triggered when an error occurs.
• propertychange (ObjectEvent) - Triggered when a property is changed.

• ImageSource
• TileSource
• VectorSource

• BaseObject

Increases the revision counter and dispatches a 'change' event.

dispatchEvent(event){boolean | undefined} inherited

Dispatches an event and calls all listeners listening for events of this type. The event parameter can either be a string or an Object with a type property.

Name Type Description event BaseEvent | string

Event object.

Returns:false if anyone called preventDefault on the event object or if any of the listeners returned false.

Gets a value.

Name Type Description key string

Key name.

Returns: Value.

Get the attribution function for the source.

Returns: Attribution function.

getAttributionsCollapsible(){boolean}

Returns: Attributions are collapsible.

Get a list of object property names.

Returns: List of property names.

Get the projection of the source.

Returns: Projection.

getProperties(){Object.<string, *>} inherited

Get an object of all property names and values.

Returns: Object.

Get the version number for this object. Each time the object is modified, its version number will be incremented.

Returns: Revision.

Get the state of the source, see State for possible states.

Returns: State.

Listen for a certain type of event.

Name Type Description type string | Array.<string>

The event type or array of event types.

listener function

The listener function.

Returns: Unique key for the listener. If called with an array of event types as the first argument, the return will be an array of keys.

Listen once for a certain type of event.

Name Type Description type string | Array.<string>

The event type or array of event types.

listener function

The listener function.

Returns: Unique key for the listener. If called with an array of event types as the first argument, the return will be an array of keys.

Refreshes the source. The source will be cleared, and data from the server will be reloaded.

Sets a value.

Name Type Description key string

Key name.

value *

Value.

silent boolean | undefined

Update without triggering an event.

setAttributions(attributions)

Set the attributions of the source.

Name Type Description attributions AttributionLike | undefined

Attributions. Can be passed as string, Array<string>, Attribution, or undefined.

Sets a collection of key-value pairs. Note that this changes any existing properties and adds new ones (it does not remove any existing properties).

Name Type Description values Object.<string, *>

Values.

silent boolean | undefined

Update without triggering an event.

Unlisten for a certain type of event.

Name Type Description type string | Array.<string>

The event type or array of event types.

listener function

The listener function.

Unsets a property.

Name Type Description key string

Key name.

silent boolean | undefined

Unset without triggering an event.

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