Class: GlyphMarker

Extends

• OM.style.Marker

Methods

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bindData(attribute, column, formatter)

Binds a Column data set to a specified aspect of this style. This creates
a single binding on this style instance. Check individual sub-styles to
see how many bindings they support.
Each binding is comprised of three key pieces: the style attribute being
bound, the Column data set that drives the style attribute, and a resolver
function that computes and returns an effective style attribute for any
given data value from the Column.

Parameters:

Name	Type	Description
attribute	string	the name of the style attribute to be bound to a data Column. An attribute is a visual aspect of the style, such as "Fill", "Size" etc.
column	object	A data column (typically an instance of OM.Column) that will format the specified visual attribute of the style. If a String type value is passed in, then it is assumed to be the name of an property in the target VectorLayer's features.
formatter	object	an instance of OM.style.Formatter; it maps an individual item's value (such as sales volume) to a particular visual style attribute value (such as a color).

Inherited From:

• OM.style.Style#bindData

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draw(feature, mapContext, options)

The actual logic for drawing a feature using a style is implemented in this method.
Must be overidden by sub-classes.

Parameters:

Name	Type	Description
feature	OM.Feature	the feature to be applied with this style
mapContext	OM.MapContext	the current map context
options	Object	the rendering options, typically the graphics group

Inherited From:

• OM.style.Style#draw

Returns:

Type

undefined

---

enableNullFillPattern(imageSource)

Sets an image pattern to fill with in the marker whenever a fill is not
set in the marker style. If null is passed, then no fill pattern is to be
used.

Parameters:

Name	Type	Description
imageSource	string | null	The fill pattern's URL

Inherited From:

• OM.style.Marker#enableNullFillPattern

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getBindables()

Returns a list of bindable style attributes.

Inherited From:

• OM.style.Marker#getBindables

Returns:

an array containing names of bindable attributes

Type

Array

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getConfig()

Gets the config of style.

Inherited From:

• OM.style.Style#getConfig

Returns:

the config object

---

getStyleName()

Return the style name

Inherited From:

• OM.style.Style#getStyleName

Returns:

the style name

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hasBinding()

Checks if this style has associated data bindings.

Inherited From:

• OM.style.Style#hasBinding

Returns:

true if there is one or more data bindings; false otherwise

Type

Boolean

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isBindable(attr)

Checks whether a specified style attribute is bindable.

Parameters:

Name	Type	Description
attr	String	the name of the attribute to be checked

Inherited From:

• OM.style.Style#isBindable

Returns:

true if the argument is bindable; false otherwise

Type

Boolean

---

isBound()

Checks whether a specified (bindable) attribute is already bound to some
Column data set.

Inherited From:

• OM.style.Style#isBound

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isFeatureBound(feature)

Checks whether the given feature is bound to any of the bindings in
this style.

Parameters:

Name	Type	Description
feature	OM.Feature	the feature instance to be checked

Inherited From:

• OM.style.Style#isFeatureBound

Returns:

returns true if the feature has associated values from
any of the style bindings' Column instances. Returns false if there
is no values associated with this feature, or there is no bindings
at all in this style.

Type

Boolean

---

resolveBinding(b, feature)

Resolves a specified binding for a given feature.
When a Style object has one or more of its visual attributes (such as Size
for a Marker style or Fill for a Color style) bound to an external data
column, then such visual attributes must be resolved for each and every feature
using the feature's associated data column value. The resolved visual
attribute values are then used to apply the style to that feature.

In other words, each time this method is called against a specific feature,
the following process always takes place:

• the feature's unique id is obtained
  
• the id is then used by the binding to find the corresponding data
  value from the associated Column instance
  
• the data value is used to determine or resolve the visual attribute
  of this style such as Size or Fill color.
  
• the visual attribute value is set on this Style instance for the
  duration of rendering the feature.

Parameters:

Name	Type	Description
b	Object	the binding object
feature	Object	the feature to be resolved with

Inherited From:

• OM.style.Style#resolveBinding

Returns:

the resolved style attribute

Type

Object

---

unbindAllData(attribute)

Un-binds all Column data sets currently bound to the specified style attribute.

Parameters:

Name	Type	Description
attribute	String	the name of the style attribute

Inherited From:

• OM.style.Style#unbindAllData

---

unbindData(attribute)

Un-binds all Column data set for the given attribute.

Parameters:

Name	Type	Description
attribute	String	name of the style attribute (such as 'Fill', 'Size'

Inherited From:

• OM.style.Style#unbindData