com.gwidgets.api.leaflet

Class GeoJSON

java.lang.Object

com.gwidgets.api.leaflet.LayerGroup

com.gwidgets.api.leaflet.FeatureGroup

com.gwidgets.api.leaflet.GeoJSON

All Implemented Interfaces:

Evented, Layer

@JsType(isNative=true)
public class GeoJSON
extends FeatureGroup

Represents a GeoJSON object or an array of GeoJSON objects. Allows you to parse GeoJSON data and display it on the map.

Author:

Zakaria Amine

Method Summary

Modifier and Type	Method and Description
L	addData(com.google.gwt.core.client.JavaScriptObject data) Adds a GeoJSON object to the layer.
com.google.gwt.core.client.JavaScriptObject	asFeature(com.google.gwt.core.client.JavaScriptObject geojson) Normalize GeoJSON geometries/features into GeoJSON features.
static LatLng	coordsToLatlng(double[] coords) Creates a LatLng object from an array of 2 numbers (latitude, longitude) used in GeoJSON for points.
static com.google.gwt.core.client.JsArray<com.google.gwt.core.client.JavaScriptObject>	coordsToLatlngs(com.google.gwt.core.client.JsArray<com.google.gwt.core.client.JavaScriptObject> coords, double levelsDeep, elemental2.core.Function coordsToLatlngs) Creates a multidimensional array of LatLngs from a GeoJSON coordinates array.
static Layer	geometryToLayer(com.google.gwt.core.client.JavaScriptObject featureData, elemental2.core.Function pointToLayer) Creates a layer from a given GeoJSON feature.
com.google.gwt.core.client.JsArray<com.google.gwt.core.client.JavaScriptObject>	latLngsToCoords(com.google.gwt.core.client.JsArray<com.google.gwt.core.client.JavaScriptObject> latlngs, double levelsDeep, Boolean closed) Reverse of coordsToLatLngs closed determines whether the first point should be appended to the end of the array to close the feature, only used when levelsDeep is 0.
com.google.gwt.core.client.JsArray<com.google.gwt.core.client.JavaScriptObject>	latLngToCoords(LatLng latlng) Reverse of coordsToLatLng.
L	resetStyle(Path layer) Resets the given vector layer's style to the original GeoJSON style, useful for resetting style after hover events.
L	setStyle(elemental2.core.Function style) Changes styles of GeoJSON vector layers with the given style function.

Methods inherited from class com.gwidgets.api.leaflet.FeatureGroup

bringToBack, bringToFront, getBounds, setStyle

Methods inherited from class com.gwidgets.api.leaflet.LayerGroup

addEventParent, addLayer, addTo, bindPopup, bindPopup, bindTooltip, bindTooltip, bindTooltip, clearAllEventListeners, clearLayers, closePopup, closeTooltip, eachLayer, fire, getLayer, getLayerId, getLayers, getPane, getPopup, getTooltip, hasLayer, invoke, isPopupOpen, isTooltipOpen, listens, off, off, off, on, once, openPopup, openTooltip, remove, removeEventParent, removeFrom, removeLayer, removeLayer, setPopupContent, setPopupContent, setPopupContent, setTooltipContent, setTooltipContent, setTooltipContent, setZIndex, toGeoJSON, togglePopup, toggleTooltip, unbindPopup, unbindTooltip

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

addData

@JsMethod
public L addData(com.google.gwt.core.client.JavaScriptObject data)

Adds a GeoJSON object to the layer.

Parameters:

data - the data

Returns:

the L class

setStyle

@JsMethod
public L setStyle(elemental2.core.Function style)

Changes styles of GeoJSON vector layers with the given style function.

Parameters:

style - the style function

Returns:

the L class

resetStyle

@JsMethod
public L resetStyle(Path layer)

Resets the given vector layer's style to the original GeoJSON style, useful for resetting style after hover events.

Parameters:

layer - the layer to reset

Returns:

the L class

geometryToLayer

@JsMethod
public static Layer geometryToLayer(com.google.gwt.core.client.JavaScriptObject featureData,
                                              elemental2.core.Function pointToLayer)

Creates a layer from a given GeoJSON feature.

Parameters:

featureData - the feature data

pointToLayer - the point to layer

Returns:

the layer

coordsToLatlng

@JsMethod
public static LatLng coordsToLatlng(double[] coords)

Creates a LatLng object from an array of 2 numbers (latitude, longitude) used in GeoJSON for points. If reverse is set to true, the numbers will be interpreted as (longitude, latitude).

Parameters:

coords - the coordinates

Returns:

the lat lng

coordsToLatlngs

@JsMethod
public static com.google.gwt.core.client.JsArray<com.google.gwt.core.client.JavaScriptObject> coordsToLatlngs(com.google.gwt.core.client.JsArray<com.google.gwt.core.client.JavaScriptObject> coords,
                                                                                                                        double levelsDeep,
                                                                                                                        elemental2.core.Function coordsToLatlngs)

Creates a multidimensional array of LatLngs from a GeoJSON coordinates array. levelsDeep specifies the nesting level (0 is for an array of points, 1 for an array of arrays of points, etc., 0 by default). Can use a custom coordsToLatLng function.

Parameters:

coords - the coordinates

levelsDeep - specifies the nesting level

Function - coordsToLatLngs

Returns:

js array of coordinates

latLngToCoords

@JsMethod
public com.google.gwt.core.client.JsArray<com.google.gwt.core.client.JavaScriptObject> latLngToCoords(LatLng latlng)

Reverse of coordsToLatLng.

Parameters:

latlng - the latlng

Returns:

the js array

latLngsToCoords

@JsMethod
public com.google.gwt.core.client.JsArray<com.google.gwt.core.client.JavaScriptObject> latLngsToCoords(com.google.gwt.core.client.JsArray<com.google.gwt.core.client.JavaScriptObject> latlngs,
                                                                                                                 double levelsDeep,
                                                                                                                 Boolean closed)

Reverse of coordsToLatLngs closed determines whether the first point should be appended to the end of the array to close the feature, only used when levelsDeep is 0. False by default.

Parameters:

latlngs - the latlngs

levelsDeep - the levels deep

closed - closed

Returns:

the js array

asFeature

@JsMethod
public com.google.gwt.core.client.JavaScriptObject asFeature(com.google.gwt.core.client.JavaScriptObject geojson)

Normalize GeoJSON geometries/features into GeoJSON features.

Parameters:

geojson - the geojson

Returns:

the java script object