React TreeMap Events

Information about the event.

Object structure:

Name	Type	Description
component	TreeMap	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if you use Knockout.
jQueryEvent	jQuery.Event	Use 'event' instead. The jQuery event that caused the handler execution. Deprecated in favor of the event field.
event	Event (jQuery or EventObject)	The event that caused the handler execution. It is a dxEvent or a jQuery.Event when you use jQuery.
node	TreeMap Node	The clicked node; described in the Node section.

Cannot be used in themes.

Main article: onClick

disposing

Raised before the widget is disposed of.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name	Type	Description
component	TreeMap	The widget instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if you use Knockout.

Name

Type

Description

component

The widget instance.

element

The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.

model

The model data. Available only if you use Knockout.

Main article: onDisposing

drawn

Raised when the widget's rendering has finished.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name

Type

Description

component

The widget's instance.

element

The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.

model

The model data. Available only if you use Knockout.

Cannot be used in themes.

Main article: onDrawn

drill

Raised when a user drills up or down.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name	Type	Description
component	TreeMap	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if you use Knockout.
node	TreeMap Node	The Node object.

Cannot be used in themes.

Main article: onDrill

exported

Raised after the widget is exported.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name

Type

Description

component

The widget's instance.

element

The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.

model

The model data. Available only if you use Knockout.

Main article: onExported

exporting

Raised before the widget is exported.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name	Type	Description
component	TreeMap	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if you use Knockout.
fileName	String	The name of the file to which the widget is about to be exported.
cancel	Boolean	Allows you to prevent exporting.
format	String	The resulting file format. One of PNG, PDF, JPEG, SVG and GIF.

Main article: onExporting

fileSaving

Raised before a file with exported widget is saved to the user's local storage.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name	Type	Description
component	TreeMap	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
fileName	String	The name of the file to be saved.
format	String	The format of the file to be saved. Possible Values: 'PNG' \| 'PDF' \| 'JPEG' \| 'SVG' \| 'GIF'
data	BLOB	Exported data as a BLOB.
cancel	Boolean	Allows you to prevent file saving.

Main article: onFileSaving

hoverChanged

Raised after the pointer enters or leaves a node.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name	Type	Description
component	TreeMap	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if you use Knockout.
node	TreeMap Node	The node whose hover state has been changed; described in the Node section.

Cannot be used in themes.

Main article: onHoverChanged

incidentOccurred

Raised when an error or warning occurs.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name	Type	Description
component	TreeMap	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if you use Knockout.
target	any	Information on the occurred incident.

Main article: onIncidentOccurred

initialized

Raised only once, after the widget is initialized.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name

Type

Description

component

The widget's instance.

element

The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.

Main article: onInitialized

nodesInitialized

Raised only once, after the nodes are initialized.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name	Type	Description
component	TreeMap	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if you use Knockout.
root	TreeMap Node	The root node; described in the Node section.

Cannot be used in themes.

Main article: onNodesInitialized

nodesRendering

Raised before the nodes are displayed and each time the collection of active nodes is changed.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name	Type	Description
component	TreeMap	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if you use Knockout.
node	TreeMap Node	In most cases, the root node. When drilling down, the node of the highest displayed level. Described in the Node section.

Cannot be used in themes.

Main article: onNodesRendering

optionChanged

Raised after a widget option is changed.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name	Type	Description
name	String	The modified option if it belongs to the first level. Otherwise, the first-level option it is nested into.
model	Object	The model data. Available only if you use Knockout.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
component	TreeMap	The widget's instance.
fullName	String	The path to the modified option that includes all parent options.
value	any	The modified option's new value.

Main article: onOptionChanged

selectionChanged

Raised when a node is selected or selection is canceled.

Type:

Event

Function parameters:

e: