Class OwsContext

Object
   |
   +--Listener
         |
         +--ModelBase
               |
               +--OwsContext

class OwsContext

extends ModelBase

Author: Mike Adair
Defined in OwsContext.js

Requires:

- Sarissa

Field Detail

namespace

Object namespace

OwsContext

OwsContext(modelNode, parent)

Stores an OWS Context document as defined by the OGC interoperability experiment. This model should be eventually merged with the standard OGC context doc. Listeners supported by this model: "refresh" called when window parameters (width/height, bbox) are changed "hidden" called when visibilty of a layer is changed "wfs_getFeature" called when feature resources are loaded

Author: Mike Adair
Requires:
- Sarissa

getAllLayers

Object getAllLayers()

Method to get a list of all layers in the context doc TBD: merge this with above, passing queryable as an optional boolean param?

Returns:
the list with all layers

getBoundingBox

Object getBoundingBox()

Get the BoundingBox.

Returns:
BoundingBox array in form (xmin,ymin,xmax,ymax).

getFeatureNode

Object getFeatureNode(featureName)

returns a node that has the specified feature name in the context doc

Parameters:
featureName - Name element value to return

Returns:
the node from the context doc with the specified feature name

getHidden

Object getHidden(layerName)

Get the layer's visiblity attribute value.

Parameters:
layerName - The name of the layer that is to be changed

Returns:
hidden String with the value; 1=hidden, 0=visible.

getLayer

Object getLayer(layerName)

Method to get a layer with the specified name in the context doc

Parameters:
layerName - the layer to be returned

Returns:
the list with all layers

getMethod

Object getMethod(feature)

Get HTTP method for the specified feature

Parameters:
feature - the Layer node from the context doc

Returns:
the HTTP method to get the feature with

getQueryableLayers

Object getQueryableLayers()

Method to get a list of queryable layers

Returns:
the list with queryable layers

getServerUrl

Object getServerUrl(requestName, method, feature)

Returns the serverUrl for the layer passed in as the feature argument.

Parameters:
requestName - ignored for context docs (only GetMap supported)
method - ignored for context docs (only GET supported)
feature - the node for the feature from the context doc

Returns:
height String URL for the GetMap request

getSRS

Object getSRS()

Set the Spacial Reference System for layer display and layer requests.

Returns:
srs The Spatial Reference System.

getVersion

Object getVersion(feature)

Returns the WMS version for the layer passed in as the feature argument

Parameters:
feature - the node for the feature from the context doc

Returns:
the WMS GetMap version for the Layer.

getWindowHeight

Object getWindowHeight()

Get the Window height.

Returns:
height The height of map window from the context document.

getWindowWidth

Object getWindowWidth()

Get the Window width.

Returns:
width The width of map window from the context document

loadFeatures

void loadFeatures(objRef)

listener method which loads WFS features from the context doc, after WMS layers are loaded.

Parameters:
objRef - Pointer to this object.

setBoundingBox

void setBoundingBox(boundingBox)

Set the BoundingBox element and call the refresh listeners

Parameters:
boundingBox - array in the sequence (xmin, ymin, xmax, ymax).

setHidden

void setHidden(layerName, hidden)

Change a Layer's visibility.

Parameters:
layerName - The name of the layer that is to be changed
hidden - String with the value to be set; 1=hidden, 0=visible.

setRequestParameters

void setRequestParameters(featureName, requestStylesheet)

Listener function which sets stylesheet params for WebServiceRequests

Parameters:
objRef - pointer to this object
featureNodeId - the id of the node in the doc to be processed by the stylesheet

setSRS

void setSRS(srs)

Set the Spacial Reference System for layer display and layer requests.

Parameters:
srs - The Spatial Reference System.

setWindowHeight

void setWindowHeight(height)

Set the Window height.

Parameters:
height - The height of map window (therefore of map layer images).

setWindowWidth

void setWindowWidth(width)

Set the Window width.

Parameters:
width - The width of map window (therefore of map layer images).