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HERE Maps API for JavaScript - API Reference

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HERE Maps API for JavaScript - API Reference: Class: Overview

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Class: Overview

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H.ui.Overview

new H.ui.Overview (baseLayer, opt_options)

This class represents a small overview of the main map.

Name Type Description
baseLayer H.map.layer.Layer

The layer to use to display the overview map
opt_options H.ui.Overview.Options optional

Optional initialization parameters

Extends

Methods

addChild (child)H.ui.base.Container inherited

This method adds a child element to be rendered within the given container element.

Name Type Description
child H.ui.base.Element

The child element to be added
Returns:
Type Description
H.ui.base.Container This container instance

addClass (className)H.ui.base.Element inherited

This method adds a CSS class to the given UI element (if it is not already present).

Name Type Description
className string

The name of the CSS class to add
Returns:
Type Description
H.ui.base.Element The given UI element instance

addEventListener (type, handler, opt_capture, opt_scope) inherited

This method sets a listener for a specific event triggered by the given element.

addOnDisposeCallback (callback, opt_scope) inherited

This method adds a callback which is triggered when the EventTarget object is being disposed.

Name Type Description
callback function

The callback function.
opt_scope Object optional

An optional scope for the callback function

dispatchEvent (evt) inherited

This method dispatches an event on the EventTarget object.

Name Type Description
evt H.util.Event | string

An object representing the event or a string with the event name

dispose () inherited

This method removes listeners from the given object. Classes that extend EventTarget may need to override this method in order to remove references to DOM Elements and additional listeners.

getAlignment ()H.ui.LayoutAlignment inherited

This method retrieves a value indicating layout alignment for the given control.

Returns:
Type Description
H.ui.LayoutAlignment A value indicating layout alignment for the given control

getChildren ()Array.<!H.ui.base.Element> inherited

This method retrieves the child element collection of the given container.

Returns:
Type Description
Array.<!H.ui.base.Element> The child elements of the given container

getData ()* inherited

This method retrieves previously stored arbitrary data from the given element.

Returns:
Type Description
* The previously stored data object or null if no data was stored.

getElement ()HTMLElement inherited

This method retrieves the HTML element that represents the given UI element.

Note: If the UI element has not been rendered, the method retrieves null.

Returns:
Type Description
HTMLElement An object representing the given element instance or null

getLocalization ()H.ui.i18n.Localization inherited

This method retrieves the localization object which corresponds to the current locale of the UI.

Returns:
Type Description
H.ui.i18n.Localization An object representing the location settings

getMap ()H.Map inherited

This method retrieves the map object to which the given control is attached.

Note: This method returns null if called before any controls have been added to a UI object.

Returns:
Type Description
H.Map An object representing the map to which the given control is attached

getVisibility ()boolean inherited

This method retrieves a value indicating if the given element is visibile.

Returns:
Type Description
boolean true if the given element is visible, otherwise false

isDisabled ()boolean inherited

This method retrieves a value indicating if the given UI element is disabled.

Returns:
Type Description
boolean true if the element is disabled, false otherwise

onUnitSystemChange (unitSystem) inherited

This abstract method can be overridden by deriving classes to be invoked when the UI object distance measurement system changes.

Name Type Description
unitSystem H.ui.UnitSystem

An identifier indicating the distance measurement system the UI currently uses

removeChild (child) inherited

This method removes a child element from the given container's child element collection.

Name Type Description
child H.ui.base.Element

The child element to be removed

removeClass (className)H.ui.base.Element inherited

This method removes a CSS class from the given UI element (if it is present).

Name Type Description
className string

The CSS class name to add
Returns:
Type Description
H.ui.base.Element The given UI element instance

removeEventListener (type, handler, opt_capture, opt_scope) inherited

This method removes a previously added listener from the event target.

renderInternal (element, doc) inherited overrides

This method is the concrete implementation of the UI element. It receives the pre-rendered HTML element which may be modified by deriving classes.

Name Type Description
element Element

The HTML representation of the given UI element
doc Document

The HTML document into which the give UI element is rendered

setAlignment (alignment)H.ui.Control inherited

This method sets the layout alignment for the given control.

The alignment within the map view port can be:

+--------------------------------------------------------------------------------+
|  "top-left"  > >           < <  "top-center"  > >            < <  "top-right"  |
|  "left-top"                                                       "right-top"  |
|  v                                                                          v  |
|  v                                                                          v  |
|                                                                                |
|                                                                                |
|  ^                                                                          ^  |
|  ^                                                                          ^  |
|  "left-middle"                                                 "right-middle"  |
|  v                                                                          v  |
|  v                                                                          v  |
|                                                                                |
|                                                                                |
|  ^                                                                          ^  |
|  ^                                                                          ^  |
|  "left-bottom"                                                 "right-bottom"  |
|  "bottom-left"  > >       < <  "bottom-center"  > >       < <  "bottom-right"  |
+--------------------------------------------------------------------------------+

Elements with the same layout alignments are lined up in the directions of the arrows in the illustration.

Name Type Description
alignment H.ui.LayoutAlignment

A value indicating the new alignment of the control
Returns:
Type Description
H.ui.Control An object representing the given control instance

setBaseLayer (baseLayer)H.ui.Overview

This method method sets the base layer of the overview map.

Name Type Description
baseLayer H.map.layer.TileLayer

An object representing the base layer
Returns:
Type Description
H.ui.Overview An object representing the overview map instance

setData (data) inherited

This method stores arbitrary data with the given UI element.

Name Type Description
data *

The data to be stored

setDisabled (opt_disabled, opt_force)H.ui.base.Element inherited

This method sets a value indicating if the given UI element is disabled.

Name Type Description
opt_disabled boolean optional

true to disable the element, false to enable it. Default is false
opt_force boolean optional

An optional Boolean flag indicating that the value should be set and propagated even if it is the same as the current state
Returns:
Type Description
H.ui.base.Element An object representing the given element instance

setTabIndex (tabIndex) inherited

This method sets the tabIndex of the element. See https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/tabindex for more details.

Name Type Description
tabIndex number

setVisibility (visibility) inherited

This method sets a value indicating if the given element is visible.

Name Type Description
visibility boolean

true if the given element is visible, otherwise false

Type Definitions

H.ui.Overview.Options Object

This typedef defines the configuration (initialization) properties for an object representing an overview map.

Properties:

Events

alignmentchange inherited

This event is fired when control is realigned.

Type:
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