PrizmDoc® Viewer v13.28 Release - Updated
PrizmDoc Viewer / API Reference / Viewer Control / Namespace: PCCViewer / Class: ObservableCollection
In This Topic
    Class: ObservableCollection
    In This Topic

    PCCViewer. ObservableCollection

    new ObservableCollection()

    Represents a dynamic collection that provides notifications when items get added or removed.

    Members

    (static, readonly) EventType :string

    The known events for the collection.

    Type:

    • string

    Properties:

    Name Description
    ItemAdded : string

    Event fired when an item is added to the collection.

    ItemRemoved : string

    Event fired when an item is removed from the collection.

    Methods

    add(item) → {PCCViewer.ObservableCollection}

    Add an item to the collection.

    Parameters:

    Name Type Description
    item *

    Any object or value to add to the collection.

    Returns:

    The collection object.

    Type
    PCCViewer.ObservableCollection

    forEach(iterator, thisArgopt) → {PCCViewer.ObservableCollection}

    A method to iterate over all items in the collection. This method matches the spec for Array.prototype.forEach.

    Parameters:

    Name Type Attributes Description
    iterator function | PCCViewer.ObservableCollection~iterator

    The function to execute for each item in the collection.

    thisArg * <optional>

    The Object to be used as this for the iterator function.

    Throws:

    If the iterator parameter is not a function.

    Type
    TypeError

    Returns:

    The collection object.

    Type
    PCCViewer.ObservableCollection

    off(eventType, handler) → {PCCViewer.ObservableCollection}

    Unsubscribe from an event triggered on the collection.

    Parameters:

    Name Type Description
    eventType string

    The type of event being unsubscribed.

    handler function

    The function that was used to subscribe to the event.

    See:

    Returns:

    The collection object.

    Type
    PCCViewer.ObservableCollection

    on(eventType, handler) → {PCCViewer.ObservableCollection}

    Subscribe to an event triggered on the collection.

    Parameters:

    Name Type Description
    eventType string

    The type of event being subscribed.

    handler function

    The function to call when the event is triggered.

    See:

    Returns:

    The collection object.

    Type
    PCCViewer.ObservableCollection

    remove(item) → {PCCViewer.ObservableCollection}

    Remove an item from the collection.

    Parameters:

    Name Type Description
    item *

    The item to be removed. This must be the same object that was added to the collection.

    Returns:

    The collection object.

    Type
    PCCViewer.ObservableCollection

    removeAll() → {PCCViewer.ObservableCollection}

    Removes all items from the collection.

    Returns:

    The collection object.

    Type
    PCCViewer.ObservableCollection

    toArray() → {Array.<*>}

    Generates an array of all of the items in the collection.

    Returns:

    An array of all items in the collection.

    Type
    Array.<*>

    Type Definitions

    iterator(item, index, array)

    The iterator function for the PCCViewer.ObservableCollection#forEach method.

    This function can also have an optional this argument, as defined in the PCCViewer.ObservableCollection#forEach method.

    Parameters:

    Name Type Description
    item *

    The item from the collection.

    index Number

    The index of the item from the collection.

    array Array

    An array of all the items in the collection.


    Documentation generated by JSDoc 3.6.10 on Sun Feb 25 2024 19:35:19 GMT+0000 (Coordinated Universal Time)