Halo

Properties

data :Array (Needs to be set at runtime)

Array of "transactions" where each datum contains three unique keys that are used to display a "source", "target", and "group"

Example
[{
	"CMTE_ID": "C00367995",
	"FILE_NUM": "714521",
	"TRANSACTION_TP": "24K",
	"Month": "1",
	"Day": "18",
	"Year": "2011",
	"TRANSACTION_AMT": "2000",
	"STATE": "GA",
	"ENTITY_TYPE": "PAC",
	"CAND_ID": "H2GA01157",
	"CAND_NAME": "KINGSTON, JACK REP.",
	"OFFICE": "H",
	"PTY": "REP",
	"Key": "H0",
	"CMTE_NM": "SIERRA NEVADA CORPORATION PAC"
 },
 {
	"CMTE_ID": "C00142315",
	"FILE_NUM": "722322",
	"TRANSACTION_TP": "24K",
	"Month": "2",
	"Day": "1",
	"Year": "2011",
	"TRANSACTION_AMT": "3500",
	"STATE": "CA",
	"ENTITY_TYPE": "PAC",
	"CAND_ID": "H8CA20059",
	"CAND_NAME": "NUNES, DEVIN GERALD",
	"OFFICE": "H",
	"PTY": "REP",
	"Key": "H1",
	"CMTE_NM": "BOYD GAMING POLITICAL ACTION COMMITTEE"
 },
 . . .
]

dataTipRenderer :function (internal.dataTipRenderer)

The dataTipRenderer is used to customize the data tip that is shown on mouse-over events. You can append to or modify the 'tip' parameter to customize the data tip. You can also return modified x, y coordinates to place the data tip in a different location.

Example
// tip - html DIV element
// e - svg rect of the bar being moused over
// d - datum
// i - datum index
// j - group index (optional)
// x - suggested x position of data tip
// y - suggested y position of data tip
// return {Array} [x, y] - x and y coordinates placing data tip.

function dataTipRenderer(tip, e, d, i, j, x, y) {
		var html = '<div class="vz-tip-header1">HEADER1</div>' +
		 '<div class="vz-tip-header-rule"></div>' +
		 '<div class="vz-tip-header2"> HEADER2 </div>' +
		 '<div class="vz-tip-header-rule"></div>' +
		 '<div class="vz-tip-header3"> HEADER3 </div>';

		var h1 = scope.nodeGroupLabel(d.values ? d.values[0] : d.data);
		var h2 = scope.nodeLabel(d.values ? d.values[0] : d.data);
		var h3 = scope.valueFormatter(d.value);

		html = html.replace("HEADER1", h1);
		html = html.replace("HEADER2", h2);
		html = html.replace("HEADER3", h3);

		tip.style('width','225px').style('height','80px').html(html);

		return [(Number(x) - 110),y - 90 - d.r]
}

duration :Number (500)

Duration (in milliseconds) of any component transitions.

haloKey :function (null - must be set at runtime)

Function that returns a key value for the given halo that the datum it is associated with.

Example
function (d) { return d.haloKey }

haloLabel :function (function (d) { return d.haloLabel })

Function that returns label value for a given halo group arc.

haloThickness :Number (0.05)

Thickness in pixels of each halo group arc expressed as percentage of total radius

height :Number/String (600)

Height of component in either pixels (Number) or percentage of parent container (XX%)

Example
viz.height(600) or viz.height('100%');

margin :Object ({top:'5%', bottom:'5%', left:'5%', right:'5%'})

Margins between component render area and border of container. This can either be a fixed pixels (Number) or a percentage (%) of height/width.

nodeGroupKey :function (null - must be set at runtime)

Function that returns a key value for the given node group (inner cluster grouping) that the datum it is associated with.

Example
function (d) { return d.nodeGroupKey }

nodeGroupLabel :function (function (d) { return d.nodeGroupLabel })

Function that returns label value for a given datum's node group.

nodeKey :function (null - must be set at runtime.)

Function that returns unique key value for a given datum that will be represented as a circular node.

nodeLabel :function (function (d) { return d.nodeLabel })

Function that returns label value for a given node.

padAngle :Number (1)

Distance in radial degrees between each outer halo group arc.

value :function (null - must be set at runtime.)

Function that returns the value used to calculate a nodes circular area for a given datum.

valueFormatter :function (function (d) { return d.value })

Formatter function that returns a display ready version of a given datum's value.

width :Number/String (600)

Width of component in either pixels (Number) or percentage of parent container (XX%)

Example
viz.width(600) or viz.width('100%');

Methods

applyCallbacks()

Used to set listeners to multiple events at once.

This method is usually called internally from a vizuly2.core.component to set listeners for style specific methods.

Example
var stylesCallbacks = [
   {on: 'updated.styles', callback: applyStyles},
   {on: 'mouseover.styles', callback: styles_onMouseOver},
   {on: 'mouseout.styles', callback: styles_onMouseOut}
 ];

 viz.applyCallbacks(stylesCallbacks);

applyStyles(styles)

Used to apply a collection of styles at one time

Parameters:
Name Type Description
styles String

A style collection object
Example
var blueStyles =
  {
    'background-color-top': '#021F51',
    'background-color-bottom': '#039FDB',
    'value-label-color': '#FFF',
    'x-axis-label-color': '#FFF',
    'y-axis-label-color': '#FFF',
  	 'bar-fill': '#02C3FF',
  	 'axis-stroke': '#FFF',
  	 'bar-radius': 0
  }

 viz.applyStyles(blueStyles);

clearStyles()

Used to clear all runtime styles and set all styles back to components default style settings.

destroy()

Removes the component from the DOM and removes all event listeners. Typically this is called when a page programmer is removing the component from memory and wants to free the component up for garbage collection by the browser.

getStyle(style, args)

Used by the component at runtime to get the current value for a given style. This can be either the default style or runtime applied styles.

The value returned could be either a static value, or a result of a dynamic function that calculates the style at runtime.

Parameters:
Name Type Description
style String

Name of the style
args Array

Any arguments that need to be passed to the style functor
Example
// This sets all '.vz-bar' elements with a fill matching the 'bar-fill-color' style
 selection
 .selectAll('.vz-bar')
 .style('fill', function (d,i) { return viz.getStyle('bar-fill-color',arguments); });

id()

Returns a unique identifier that has been auto generated at instantiation. This ensures that multiple components of the same type will have a unique DOM id

Example
// Returns the viz parent DIV element
 document.getElementById(viz.id());

 // Alternatively you can also use
 viz.selection();

on(event, listener)

Used to set listeners to component events. Passing a null listener value will clear the event listener

Note: You can use event namespaces (D3.dispatch) to set multiple listeners for a single event

Parameters:
Name Type Description
event String

of event to be listened for
listener function

function used to capture emited event
Example
// Sets a listener to the update event
 viz.on('update', myListenerFunction);

 // Sets two namespace specific listener to a mouseover event
 viz.on('mouseover.module_1', myModule1ListenerFunction);
 viz.on('mouseover.module_2', myModule2ListenerFunction);

 // Clears the event listener for the update event
 viz.on('update', null);

onChange(Property, Listener)

Used to capture any component property change events.

Parameters:
Name Type Description
Property String

name of change event to be listened for
Listener function

function used to capture emited event
Example
// Listens for any changes to the data property
 viz.onChange('data', myListenerFunction);

parent()

Returns the parent DOM element the component appended to.

removeDataTip()

Used by internally components to remove a data tip. This is usually called on a mouseout event.

selection()

Returns a d3.selection of the component's DIV container that was created at component instantiation.

showDataTip(e, d, i, j)

Used internally by components to display a data tip. This is usually called on a mouseover event.

Parameters:
Name Type Description
e DOMElement

The target element that triggered the call
d Object

The datum associated with the triggering event
i Number

The index associated with the datum
j Number

Optional - The series (if one exists) asscoiated with the datum

size()

Returns a size object based on the components internal measure function with absolute pixel values. This is helpful for applying styles/decorations after the component has rendered and you want to know specific measurements of the component.

Example
size.top
size.left
size.height
size.width

style(style, value)

Used to set, retrieve and clear runtime styles

Parameters:
Name Type Description
style String

Name of the style
value function

Value of the style
Example
// Retrieves a current style value (either runtime style of default style)
 viz.style('myStyleName');

 // Sets a new style value
 viz.style('myStyleName', myStyleValue);

 // Clears a runtime style (default styles will still be active)
 viz.style('myStyleName', null);

(static) update()

Triggers the render pipeline process to refresh the component on the screen.

updateOnResize(resize, delay)

This function can be used to dynamically update a component when the window is resized. Typically this is used when the viz.size() or viz.width() is set to a percentage. A default delay of 50 milliseconds is used to buffer resize events and prevent the component from repeatedly updating while the user is resizing the window. This delay can be modified as seen in the delay parameter below.

Parameters:
Name Type Description
resize Boolean

A true value will call viz.update() when the user resizes the window. A false value will cancel the resize.
delay Number

Optional. The time in milliseconds to wait between resize events before calling viz.update()
Example
// Sets the width of the component to 100% and uses the resizeOnUpdate with a 100ms delay buffer.
 viz.width('100%').updateOnResize(true, 100);

validate()

Validates that all public properties (passed in props param) have non null values.

This method is usually called internally from a vizuly2.core.component measure function.

Events

In addition to component specific events, all components natively support these events produced by the vizuly2.core.component factory:

initialized, measured, styled, updated, validated

All Events can be accessed via the viz.on('eventName', myEventListener) format.

// Sets a listener to the update event
 viz.on('updated', myListenerFunction);

 // Sets two namespace specific listener to a mouseover event
 viz.on('mouseover.module_1', myModule1ListenerFunction);
 viz.on('mouseover.module_2', myModule2ListenerFunction);

 // Clears the event listener for the update event
 viz.on('updated', null);

arcout :VizulyEvent

Fires when user moves the mouse off a halo arc.

Parameters:
Name Type Description
e

DOM element that fired event
d

Datum associated with DOM element
i

Index of datum in display series
this

Vizuly Component that emitted event
Example
viz.on('mouseout', function (e, d, i) { ... });

arcover :VizulyEvent

Fires when user moves the mouse over a halo arc.

Parameters:
Name Type Description
e

DOM element that fired event
d

Datum associated with DOM element
i

Index of datum in display series
this

Vizuly Component that emitted event
Example
viz.on('mouseover', function (e, d, i) { ... });

initialized :VizulyEvent

Fires after component initialize() method has been called.

Parameters:
Type Description
VizulyComponent

viz - The viz that emited the event

linkout :VizulyEvent

Fires when user moves the mouse off a link path (connecting shape between halo and node.)

Parameters:
Name Type Description
e

DOM element that fired event
d

Datum associated with DOM element
i

Index of datum in display series
this

Vizuly Component that emitted event
Example
viz.on('mouseout', function (e, d, i) { ... });

linkover :VizulyEvent

Fires when user moves the mouse over a link path (connecting shape between halo and node.)

Parameters:
Name Type Description
e

DOM element that fired event
d

Datum associated with DOM element
i

Index of datum in display series
this

Vizuly Component that emitted event
Example
viz.on('mouseover', function (e, d, i) { ... });

measured :VizulyEvent

Fires after component measure() method has been called

Parameters:
Type Description
VizulyComponent

viz - The viz that emited the event

nodeclick :VizulyEvent

Fires when user clicks on a given node.

Parameters:
Name Type Description
e

DOM element that fired event
d

Datum associated with DOM element
i

Index of datum in display series
this

Vizuly Component that emitted event
Example
viz.on('click', function (e, d, i) { ... });

nodeeout :VizulyEvent

Fires when user moves the mouse off a node.

Parameters:
Name Type Description
e

DOM element that fired event
d

Datum associated with DOM element
i

Index of datum in display series
this

Vizuly Component that emitted event
Example
viz.on('mouseout', function (e, d, i) { ... });

nodeover :VizulyEvent

Fires when user moves the mouse over a node.

Parameters:
Name Type Description
e

DOM element that fired event
d

Datum associated with DOM element
i

Index of datum in display series
this

Vizuly Component that emitted event
Example
viz.on('mouseover', function (e, d, i) { ... });

styled :VizulyEvent

Fires after component applyStyles() method has been called.

Parameters:
Type Description
VizulyComponent

viz - The viz that emited the event

updated :VizulyEvent

Fires after component update() method has been called.

Parameters:
Type Description
VizulyComponent

viz - The viz that emited the event

validated :VizulyEvent

Fires after component validate() method has been called.

Parameters:
Type Description
VizulyComponent

viz - The viz that emited the event