Oracle Maps HTML5 JavaScript API Reference

 
Class: TileLayer

OM.layer. TileLayer

new TileLayer(name, options)

This class represents a map tile layer served by an Oracle MapViewer
tile server. It contains the zoom level, scale, tile size and other relevant details
required to fetch and display the tiles..

Parameters:
Name Type Description
name String

The unique layer name.
options Object

An object that specifies other tile layer parameters.
It can have the following attributes:


  • dataSource {String}: The data source where the mapviewer tile layer is defined.

  • tileLayer {String}: The name of mapviewer tile layer.

  • tileServerURL {String}: The mapviewer tile server URL. For example, "http://maps.oracle.com/mapviewer/mcserver".
    This is only needed when the tiles are not served by the mapviewer server specified by mapViewerURL passed
    to the Map constructor.

  • subdomains {Array}: Mapviewer subdomains array. These are used to fetch tiles from multiple subdomains.
    Example: ['instance1', 'instance2', 'instance3'] (Optional).

  • tileImageURL {String}: The URL for local storaged tiles, this is only valide when creating a tilelayer from a local folder

  • tileLayerConfig {OM.layer.TileLayerConfig}: The tile layer configuration object. This is required
    only when the tile layer is an custom tile layer.

  • getTileURL {Function}: A function that returns the tile image URL for a tile with the specified
    zoom level and tile indices. The function takes the following parameters: zoomLevel,
    tileX, tileY, tileBound. Where tileX and tuileY are the tile indices or IDs.
    This is required only when the tile layer is an custom tile layer.

  • isLocalTileLayer {Boolean}: specify whether it is a local tilelayer or not
Returns:

An instance of OM.layer.TileLayer

Type
OM.layer.TileLayer

Extends

Methods

bringForward()

Bring the layer to the front by one step (closer to the top of the map).

Inherited From:
Returns:

The new z-index

Type
int

bringToTop()

Bring the layer all the way to the top of the map

Inherited From:
Returns:

The new z-index

Type
int

enableInfoWindow(enable)

Enable or disable the feature info window.

Parameters:
Name Type Description
enable boolean

Enable or disable feature info window. By default,
the info window is enabled.
Inherited From:
Returns:
Type
void

enableUTFGridInfoWindow(status)

Enable or disable the UTFGrid Info Window when applicable

Parameters:
Name Type Description
status boolean

true or false to enable or disable the default (built-in) utfgrid info window

getCustomTags()

Get custom tags from tile layer

Returns:

An object defined custom tags if any

Type
Object

getEnableInfoWindow()

get the enable infowindow status: true for enabled and false otherwise
the info window is enabled.

Inherited From:
Returns:

true or false

Type
boolean

getName()

Get the layer name.

Inherited From:
Returns:

The layer name

Type
String

getOpacity()

Get the layer's current opacity setting.

Inherited From:
Returns:

The layer's opacity. Is a value between 0 and 1.

Type
float

getTileLayerConfig(callBack)

Get the tile layer configuration.

Parameters:
Name Type Description
callBack function

Getting tile layer config is asynchronous. So
you need a callback fucntion to get result.
Returns:
Type
void

getUTFGridResolution(res)

parse and return the utfgrid resolution

Parameters:
Name Type Description
res string

The utfgrid resolution. Can be either a string or a number
Returns:

the utfgrid resolution

Type
number

getZIndex()

Get the layer's z-index.

Inherited From:
Returns:

The z-index value. Returns -1 if the layer was not added to the map.

Type
int

isInZoomLevelRange(curLevel)

Checks if the current map zoom level is within this layer's visible zoom-level range.

Parameters:
Name Type Description
curLevel int

Optional, the zoom level to check if it is within the minVisibleLevel and maxVisibleLevel
range. If not specified, then the current zoom level is used.
Inherited From:
Returns:

true if the current map level is within the layer's zoom level range for
it to be visible.

Type
Boolean

isVisible(curLevel)

Get the visibility of the layer.

Parameters:
Name Type Description
curLevel int

Optional, the zoom level to check if it is within the minVisibleLevel and maxVisibleLevel
range. If not specified, then the current zoom level is used.
Inherited From:
Returns:

True if the theme-based FOI layer is currently visible,
False if the theme-based FOI layer is currently not visible

Type
Boolean

on()

A shorthand name for the member function addListener.

Inherited From:
Mixes In:

redraw()

Refresh the display of the layer's existing data.

Inherited From:
Returns:

None

sendBackward()

Sendthe layer to the back by one step (closer to the bottom of the map).

Inherited From:
Returns:

The new z-index

Type
int

sendToBottom()

Send the layer all the way to the bottom of the map

Inherited From:
Returns:

The new z-index

Type
int

setInfoWindowTrigger(status)

Enable or disable the UTFGridInfoWindow when applicable

Parameters:
Name Type Description
status boolean

true or false to enable or disable the default (built-in) utfgrid info window

setName(newName)

Set the layer name with the given name.

Parameters:
Name Type Description
newName String

The new layer name to be assigned to this layer.
Inherited From:
Returns:
Type
None

setOpacity(opacity)

Set the layer's opacity. A value between 0 (transparnet) and 1 (opaque).

Parameters:
Name Type Description
opacity float

It should be a number between 0 and 1. e.g. 0.5 means 50% opacity.
Inherited From:
Returns:
Type
void

setVisible(visibility)

Sets the visibility of the layer.
Note that the visibility change will NOT be made if the current map zoom level is
outside the layer's 'visible zoom level range' which is set by setZoomLevelRange() method.

Parameters:
Name Type Description
visibility Boolean

A Boolean true (show the layer, i.e. make it visible) or false
(hide the layer).
Inherited From:
Overrides:
Returns:

void}

Type
None

setVisibleBound(bound)

Set a bound (MBR) for the layer visibility. Only content within the supplied bound will be rendered.
That is, the map client will only fetch and display map content within this bound.

Parameters:
Name Type Description
bound OM.geometry.Rectangle

Specifies the layer boundary
Inherited From:
Returns:
Type
void

setZIndex()

Set the z-index for the layer.

Note: A valid layer z-index should be a number between 1 and n, where n is
the number of layers that are currently displayed in the map. When the newIndex
parameter of setZIndex is less than 1, it will be set to 1. If it is
greater than n, it will be set to n. If z-Index value, newIndex, is already assigned
to another layer, then it will still be assigned to the current layer (on which this function is invoked).
One or more of the other layer will be assigned a different z-index value. The changes will depend on
whether this layer was inserted into the current layer stack or just moved within the layer stack.

Inherited From:
Returns:

The old z-index

Type
int

setZoomLevelRange(minLevel, maxLevel)

Set the zoom level range within which this layer is visible. By default
a layer is set to be visible between a minmum zoom level of 0 and a maximum
(theoretical) zoom level of 100.

Parameters:
Name Type Description
minLevel int

Specifies the min level. The layer will not be
visible if the zoom level is lower than this vlaue.
maxLevel int

Specifies the max level. The layer will not be
visible if the zoom level is higher than this value.
Inherited From:
Returns:
Type
None