Class: GeoFeatureThemeLayer

mapboxgl.supermap.GeoFeatureThemeLayer

The geo geometric features thematic layer class.

new mapboxgl.supermap.GeoFeatureThemeLayer(name, opt_options)

GeoFeatureThemeLayer.js, line 6
Name Type Description
name string

The name of the thematic layer.
opt_options Object

The parameters object need to be set.

Name Type Default Description
map mapboxgl.Map

Current mapboxgl map object.
id string optional

Thematic layer ID.The theme layer ID is created by default using CommonUtil.createUniqueID("themeLayer_").
loadWhileAnimating boolean true optional

Whether to redraw in real time.
nodesClipPixel number 2 optional

The node draws a thin pixel distance.
isHoverAble boolean false optional

Whether the graphic is highlighted when hover.
isMultiHover boolean false optional

Whether multiple graphics are highlighted at the same time, used to highlight all graphics corresponding to the same data (such as: multi-faceted).
isClickAble boolean true optional

Whether the graphic is clickable.
isAllowFeatureStyle boolean false optional

Whether to allow valid attributes in the feature style to be applied to the thematic layer. It is forbidden to use the style of the feature for the thematic feature. This property enforces the application of valid attributes in the style of the data feature to the thematic feature and has a higher priority than the layer style and styleGroups, taking the style of the thematic feature out of the control of the thematic layer. In this way, you can assign a separate style to the feature elements of the special data.
opacity number 1 optional

Layer transparency.
Fires

Extends

Members

highlightStyleSuperMap.ThemeStyle

The highlight style of the thematic map layer.

idstring

Thematic layer ID.

isAllowFeatureStyleboolean

Whether to allow valid attributes in the feature style to be applied to the thematic layer.
It is forbidden to use the style of the feature for the thematic feature. This property enforces the application of valid attributes in the style of the data feature to the thematic feature and has a higher priority than the layer style and styleGroups. Make the style of the thematic feature out of the control of the thematic layer. In this way, you can assign a unique style to the feature elements of the special data.

isClickAbleboolean

Whether the graphics can be clicked.

Default Value:
true

isHoverAbleboolean

Whether the graphics are bright in hover.

isMultiHoverboolean

Whether multiple graphics are highlighted at the same time, used to highlight all graphics corresponding to the same data (such as: multi-faceted).

loadWhileAnimatingboolean

Whether to redraw in real time.(It is recommended to draw a large amount of data elements, it is recommended to set this parameter to false).

Default Value:
true

mapmapboxgl.Map

Map object.

namestring

The name of the thematic layer.

nodesClipPixelnumber

Pixel distance of nodes vacuation.

Default Value:
2

opacityfloat

The opacity of the layer.

Default Value:
1

styleSuperMap.ThemeStyle

The global style of thematic map layer.

visibilityboolean

Whether the layer is visible.

Default Value:
true

Events

beforefeaturesadded

GeoFeatureThemeLayer.js, line 92

Triggered before the feature is added.

Properties:
Name Type Description
features mapboxgl.supermap.ThemeFeature | SuperMap.ServerFeature

The added elements.

inherited changelayer

ThemeLayer.js, line 191

Fires after the layer property changes.

Properties:
Name Type Description
layer Object

Layer.
property string

The changed attribute.

inherited featuresremoved

ThemeLayer.js, line 256

Triggered after the feature is deleted.

Properties:
Name Type Description
features Array.<SuperMap.Feature.Vector>

Features that have not been successfully deleted.
succeed boolean

The deletion is successful or not.

Methods

addFeatures(features)

GeoFeatureThemeLayer.js, line 86

Adding features.

Name Type Description
features mapboxgl.supermap.ThemeFeature | SuperMap.ServerFeature

Feature object.

clear()

GeoFeatureThemeLayer.js, line 236

Clear all the content including data(features), the thematic elements, the cache.

clearCache()

GeoFeatureThemeLayer.js, line 227

Clear cache.

createThematicFeature(feature)

GeoFeatureThemeLayer.js, line 201

Create the thematic feature.

Name Type Description
feature SuperMap.Feature.Vector

Feature object.

inherited destroyFeatures(features)

ThemeLayer.js, line 138

Destroy an element.

Name Type Description
features SuperMap.Feature.Vector

The elements that will be destroyed.

inherited display(display)

ThemeLayer.js, line 169

Temporarily hide or show layers. Re-rendering fails by producing immediate effects on CSS controls. The setVisibility method is generally used to dynamically control the display and hiding of layers.

Name Type Description
display boolean optional

Whether to display the layer.

getCacheCount(){number}

GeoFeatureThemeLayer.js, line 247

Get counts of current cache.

Returns:
Type Description
number Return the counts of current cache.

inherited getFeatureBy(property, value){SuperMap.Feature.Vector}

ThemeLayer.js, line 291

Traverses each feature in the feature array features of the thematic map, and returns this feature when feature[property] === value (and returns only the first one).

Name Type Description
property string

The property name of the feature
value string

The value corresponding to property.
Returns:
Type Description
SuperMap.Feature.Vector The first vector feature that matches the attribute and the value.

inherited getFeatureById(featureId){SuperMap.Feature.Vector}

ThemeLayer.js, line 310

Returns the corresponding vector element by giving an id.

Name Type Description
featureId string

The id property of the vector feature
Returns:
Type Description
SuperMap.Feature.Vector The feature corresponding to the id. If it does not exist, return to null.

inherited getFeatures(){SuperMap.Feature.Vector}

ThemeLayer.js, line 277

Get the valid features in the current layer.

Returns:
Type Description
SuperMap.Feature.Vector Return the valid features in the layer.

inherited getFeaturesByAttribute(attrName, attrValue){Array.<SuperMap.Feature.Vector>}

ThemeLayer.js, line 320

Return an array contains all the matched features by giving a key and a value of a an attribute.

Name Type Description
attrName string

The key of the attribute.
attrValue string

The value of the attribute.
Returns:
Type Description
Array.<SuperMap.Feature.Vector> An array contains all the matched features.

inherited getLocalXY(coordinate)

ThemeLayer.js, line 396

Convert the Geographic coordinates to Pixel coordinates.

Name Type Description
coordinate Object optional

The coordinate position.

inherited moveTo(layerID, before)

ThemeLayer.js, line 569

Move the layer before a layer.

Name Type Default Description
layerID string

The layer ID to be inserted.
before boolean true optional

Whether to insert this layer before the layer whose layer id is layerID (if it is false, insert this layer after the layer whose layer id is layerID).

inherited off(event, callback, context)

ThemeLayer.js, line 365

Remove event listeners of the thematic elements.

Name Type Description
event Event

The event listener.
callback function

The callback.
context string

The context.

inherited on(event, callback, context)

ThemeLayer.js, line 349

Add event listeners of the thematic features.

Name Type Description
event Event

The event listener.
callback function

The callback.
context string

The context.

inherited onAdd()

ThemeLayer.js, line 79

Add the layer to the basemap.

redrawThematicFeatures(extent)

GeoFeatureThemeLayer.js, line 129

Redraw all the thematic elements.

Name Type Description
extent mapboxgl.LngLatBounds

The redrawn region.

removeAllFeatures()

GeoFeatureThemeLayer.js, line 120

Clear all vector features of the current layer.

removeFeatures(features)

GeoFeatureThemeLayer.js, line 110

Remove features from the thematic map. This function deletes all passed vector features (data).

Name Type Description
features SuperMap.Feature.Vector

The feature object to be removed.

inherited removeFromMap()

ThemeLayer.js, line 560

Remove the layer.

setMaxCacheCount(featureID)

GeoFeatureThemeLayer.js, line 268

Get all the graphics associated with the feature through the FeatureID. If you do not pass in this parameter, the function will return all graphics.

Name Type Default Description
featureID number si.refDataID optional

ID of the feature.

setMaxCacheCount(cacheCount)

GeoFeatureThemeLayer.js, line 256

The maximum count of caches.

Name Type Description
cacheCount number optional

count of caches.

inherited setOpacity(opacity)

ThemeLayer.js, line 178

Set the opacity of the layer, between values [0-1].

Name Type Description
opacity number optional

Opacity.

inherited setVisibility(visibility)

ThemeLayer.js, line 156

Set layer visibility, set the layer's hidden, display, and redraw corresponding visible markers.

Name Type Description
visibility boolean optional

Whether to display the layer（The current map's resolution is between the maximum and minimum resolutions）.

inherited toFeature(features){SuperMap.Feature.Vector}

ThemeLayer.js, line 414

Convert to the feature in iClient.

Name Type Description
features mapboxgl.supermap.ThemeFeature | GeoJSONObject

The elements to be converted include the mapboxgl.supermap.ThemeFeature type and the GeoJOSN specification data type.
Returns:
Type Description
SuperMap.Feature.Vector The converted iClient element.