ASP.NET MVC Controls | ComponentOne
In This Topic
    LayoutItemCollection Class
    In This Topic
    File
    c1.nav.js
    Module
    c1.nav
    Base Class
    ObservableArray

    Defines the class which represents the collection of the layoutitems.

    Constructor

    Properties

    Methods

    Events

    Constructor

    constructor

    constructor(parent?: any): LayoutItemCollection
    

    Initializes a new LayoutItemCollection.

    Parameters
    • parent: any
    Optional

    The object owns this collection.

    Returns
    LayoutItemCollection

    Properties

    isUpdating

    Gets a value that indicates whether notifications are currently suspended (see beginUpdate and endUpdate).

    Inherited From
    ObservableArray
    Type

    Methods

    beginUpdate

    beginUpdate(): void
    

    Suspends notifications until the next call to endUpdate.

    Inherited From
    ObservableArray
    Returns
    void

    clear

    clear(): void
    

    Removes all items from the array.

    Inherited From
    ObservableArray
    Returns
    void

    deferUpdate

    deferUpdate(fn: Function): void
    

    Executes a function within a beginUpdate/endUpdate block.

    The collection will not be refreshed until the function finishes. This method ensures endUpdate is called even if the function throws an exception.

    Parameters
    • fn: Function

      Function to be executed without updates.

    Inherited From
    ObservableArray
    Returns
    void

    endUpdate

    endUpdate(): void
    

    Resumes notifications suspended by a call to beginUpdate.

    Inherited From
    ObservableArray
    Returns
    void

    implementsInterface

    implementsInterface(interfaceName: string): boolean
    

    Returns true if the caller queries for a supported interface.

    Parameters
    • interfaceName: string

      Name of the interface to look for.

    Inherited From
    ObservableArray
    Returns
    boolean

    indexOf

    indexOf(searchElement: T, fromIndex?: number): number
    

    Searches for an item in the array.

    Parameters
    • searchElement: T

      Element to locate in the array.

    • fromIndex: number
    Optional

    The index where the search should start.

    Inherited From
    ObservableArray
    Returns
    number

    insert

    insert(index: number, item: T): void
    

    Inserts an item at a specific position in the array.

    Parameters
    • index: number

      Position where the item will be added.

    • item: T

      Item to add to the array.

    Inherited From
    ObservableArray
    Returns
    void

    onCollectionChanged

    onCollectionChanged(e?: NotifyCollectionChangedEventArgs): void
    

    Raises the collectionChanged event.

    Parameters
    Optional

    Contains a description of the change.

    Returns
    void

    push

    push(...item: any[]): number
    

    Adds one or more items to the end of the array.

    Parameters
    • ...item: any[]

      One or more items to add to the array.

    Returns
    number

    remove

    remove(item: T): boolean
    

    Removes an item from the array.

    Parameters
    • item: T

      Item to remove.

    Inherited From
    ObservableArray
    Returns
    boolean

    removeAt

    removeAt(index: number): void
    

    Removes an item at a specific position in the array.

    Parameters
    • index: number

      Position of the item to remove.

    Inherited From
    ObservableArray
    Returns
    void

    setAt

    setAt(index: number, item: any): void
    

    Assigns an item at a specific position in the array.

    Parameters
    • index: number

      Position where the item will be assigned.

    • item: any

      Item to assign to the array.

    Returns
    void

    shift

    shift(): T
    

    Removes the first element from the array and returns that element.

    This method changes the length of the array.

    Inherited From
    ObservableArray
    Returns
    T

    slice

    slice(begin?: number, end?: number): T[]
    

    Creates a shallow copy of a portion of an array.

    Parameters
    • begin: number Optional

      Position where the copy starts.

    • end: number Optional

      Position where the copy ends.

    Inherited From
    ObservableArray
    Returns
    T[]

    sort

    sort(compareFn?: Function): this
    

    Sorts the elements of the array in place.

    Parameters
    • compareFn: Function Optional

      Specifies a function that defines the sort order. If specified, the function should take two arguments and should return -1, +1, or 0 to indicate the first argument is smaller, greater than, or equal to the second argument. If omitted, the array is sorted in dictionary order according to the string conversion of each element.

    Inherited From
    ObservableArray
    Returns
    this

    splice

    splice(index: number, count: number, item?: any): any[]
    

    Removes and/or adds items to the array.

    Parameters
    • index: number

      Position where items will be added or removed.

    • count: number

      Number of items to remove from the array.

    • item: any Optional

      Item to add to the array.

    Returns
    any[]

    unshift

    unshift(...items: T[]): number
    

    Adds one or more elements to the beginning of the array and returns the new length of the array.

    Parameters
    • ...items: T[]

      One or more items to add to the array.

    Inherited From
    ObservableArray
    Returns
    number

    Events

    collectionChanged

    Occurs when the collection changes.

    Inherited From
    ObservableArray
    Arguments
    NotifyCollectionChangedEventArgs