abstract Filter

Base class for DataFrame-bound filtering controls. Supports collaborative filtering by efficiently working together with other filters.

Extends

• Widget

Constructors

new Filter()

new Filter(): Filter

Returns

Filter

Overrides

Widget . constructor

Source

src/widgets.ts:391

Properties

Property	Modifier	Type	Default value	Description	Inherited from
_functions	protected	Func[]	[]	-	Widget._functions
_properties	protected	Property[]	[]	-	Widget._properties
_root	protected	HTMLElement	undefined	-	Widget._root
column	public	null | Column<any, any>	null	A column this filter is associated with.	-
columnName?	public	string	undefined	-	-
controls	public	HTMLDivElement	undefined	Group of control icons on the right of the filter header, after the name. FilterGroup takes care of its visibility.	-
dart	public	any	undefined	-	Widget.dart
dataFrame	public	null | DataFrame	undefined	A DataFrame this filter is associated with.	-
factory	public	null | Func	null	Constructor function. No parameters, returns [Widget].	Widget.factory
indicator	public	HTMLDivElement	undefined	An indicator icon on the left of the filter header, before the name. A filter is responsible for hiding or showing it, depending on its state.	-
isDetached	public	boolean	false	-	Widget.isDetached
props	public	any	undefined	-	Widget.props
subs	public	Subscription[]	undefined	-	Widget.subs
temp	public	any	undefined	Contains auxiliary information	Widget.temp

Accessors

caption

get caption(): string

Caption to be shown in the filter group.

Returns

string

Source

src/widgets.ts:389

---

children

get children(): Widget<any>[]

Parent widget up the DOM tree, or null.

Returns

Widget<any>[]

Source

src/widgets.ts:293

---

filterSummary

get abstract filterSummary(): string

Override to provide short filter summary that might be shown on viewers or in the context panel.

Returns

string

Source

src/widgets.ts:424

---

isFiltering

get isFiltering(): boolean

Override to indicate whether the filter actually filters something (most don't in the initial state). This is used to minimize the number of unnecessary computations. Make sure to call super.isFiltering to check whether the filter has been disabled by the user

Returns

boolean

Source

src/widgets.ts:415

---

isReadyToApplyFilter

get isReadyToApplyFilter(): boolean

Whether a filter is ready to apply the filtering mask synchronously.

Returns

boolean

Source

src/widgets.ts:421

---

parent

get parent(): null | Widget<any>

Parent widget up the DOM tree, or null.

Returns

null | Widget<any>

Source

src/widgets.ts:290

---

root

get root(): HTMLElement

Widget's visual root.

set root(r): void

Parameters

Parameter	Type
r	HTMLElement

Returns

HTMLElement

Source

src/widgets.ts:297

---

type

get type(): string

Returns

string

Source

src/widgets.ts:206

Methods

addProperty()

private addProperty(propertyName, propertyType, defaultValue, options): any

Registers an property with the specified type, name, and defaultValue.

Parameters

Parameter	Type	Default value	Description
propertyName	string	undefined
propertyType	"string" | "bigint" | "object" | "map" | "file" | "view" | "blob" | "int" | "double" | "bool" | "byte_array" | "datetime" | "qnum" | "dataframe" | "num" | "string_list" | "dataframe_list" | "cell" | "column" | "column_list" | "graphics" | "tablerowfiltercall" | "colfiltercall" | "bitset" | "dynamic" | "viewer" | "list" | "semantic_value" | "func" | "funccall" | "property" | "categorical" | "numerical" | "GridCellRenderArgs" | "element" | "TableView" | "User" | "Menu" | "Project" | "event_data" | "progressindicator" | "Credentials" | "ScriptEnvironment" | "Notebook"	undefined
defaultValue	any	null
options	null | object & IProperty	null

Returns

any

Inherited from

Widget . addProperty

See

Registered property gets added to properties. Returns default value, thus allowing to combine registering a property with the initialization

Source

src/widgets.ts:318

---

apply()

apply(properties): Widget<any>

Parameters

Parameter	Type	Description
properties	object

Returns

Widget<any>

Inherited from

Widget . apply

Source

src/widgets.ts:257

---

applyFilter()

abstract applyFilter(): void

Override to filter the dataframe. The method should work with this.dataFrame.filter, should disregard false values (these are filtered out already by other filters), and should filter out corresponding indexes.

Returns

void

Source

src/widgets.ts:430

---

applyState()

applyState(state): void

Override to load filter state.

Parameters

Parameter	Type
state	any

Returns

void

Source

src/widgets.ts:441

---

attach()

attach(dataFrame): void

Gets called when a data frame is attached. Make sure to call super.attach(dataFrame) when overriding.

Parameters

Parameter	Type	Description
dataFrame	DataFrame

Returns

void

Source

src/widgets.ts:449

---

detach()

detach(): void

Gets called when a widget is detached and will no longer be used. Typically used for unsubscribing from events. Be sure to call super.detach() if this method is overridden.

Returns

void

Overrides

Widget . detach

Source

src/widgets.ts:465

---

getDartProperties()

getDartProperties(): any[]

Returns

any[]

Inherited from

Widget . getDartProperties

Source

src/widgets.ts:278

---

getFunctions()

getFunctions(): Func[]

Functions that are applicable to this particular widget. Used in the UI to display context actions, and for the AI integrations.

Returns

Func[]

Inherited from

Widget . getFunctions

Source

src/widgets.ts:272

---

getProperties()

getProperties(): Property[]

Returns all properties of this widget.

Returns

Property[]

Inherited from

Widget . getProperties

Source

src/widgets.ts:268

---

onFrameAttached()

onFrameAttached(dataFrame): void

Parameters

Parameter	Type
dataFrame	DataFrame

Returns

void

Inherited from

Widget . onFrameAttached

Source

src/widgets.ts:284

---

onPropertyChanged()

onPropertyChanged(property): void

Gets called when viewer's property is changed.

Parameters

Parameter	Type	Description
property	null | Property	or null, if multiple properties were changed.

Returns

void

Inherited from

Widget . onPropertyChanged

Source

src/widgets.ts:276

---

refresh()

refresh(): void

Gets called when a previously used filter gets moved in the DOM tree. Normally, you don't need to do anything, but this might be handy for the iframe-based filters.

Returns

void

Source

src/widgets.ts:463

---

saveState()

saveState(): any

Override to save filter state.

Returns

any

Source

src/widgets.ts:433

---

sourceRowsChanged()

sourceRowsChanged(): void

Returns

void

Inherited from

Widget . sourceRowsChanged

Source

src/widgets.ts:282

---

sub()

sub(subscription): void

Registers a subscription to an external event.

Parameters

Parameter	Type	Description
subscription	Subscription

Returns

void

Inherited from

Widget . sub

Source

src/widgets.ts:250

---

toDart()

toDart(): any

Returns

any

Inherited from

Widget . toDart

Source

src/widgets.ts:242

---

find()

static find(root): null | Widget<any>

Finds existing widget from its visual root.

Parameters

Parameter	Type
root	Element

Returns

null | Widget<any>

Inherited from

Widget . find

Source

src/widgets.ts:238

---

fromRoot()

static fromRoot(root): Widget<any>

Creates a new widget from the root element.

Parameters

Parameter	Type
root	HTMLElement

Returns

Widget<any>

Inherited from

Widget . fromRoot

Source

src/widgets.ts:341

---

getAll()

static getAll(): Widget<any>[]

Returns all currently active widgets.

Returns

Widget<any>[]

Inherited from

Widget . getAll

Source

src/widgets.ts:233