Interface nsIContentPrefCallback2Type

The callback used by the above methods.

Hierarchy

Methods

AddRef QueryInterface Release handleCompletion handleError handleResult

Methods

AddRef

  • Increases the reference count for this interface. The associated instance will not be deleted unless the reference count is returned to zero.

    Returns

    The resulting reference count.

    Returns number

QueryInterface

  • Parameters

    • aIID: object
    • Optional aInstancePtr: object

    Returns any

  • A run time mechanism for interface discovery.

    Returns

    NS_OK if the interface is supported by the associated instance, NS_NOINTERFACE if it is not.

    aInstancePtr must not be null.

    Parameters

    • aIID: object

      [in] A requested interface IID

    • aInstancePtr: object

      [out] A pointer to an interface pointer to receive the result.

    Returns void

Release

  • Decreases the reference count for this interface. Generally, if the reference count returns to zero, the associated instance is deleted.

    Returns

    The resulting reference count.

    Returns number

handleCompletion

  • Called when the method finishes. This will be called exactly once for each method invocation, and afterward no other callback methods will be called.

    Parameters

    • reason: number

      One of the COMPLETE_* values indicating the manner in which the method completed.

    Returns void

handleError

  • Called when an error occurs. This may be called multiple times before handleCompletion is called.

    Parameters

    • error: number

      A number in Components.results describing the error.

    Returns void

handleResult

  • For the retrieval methods, this is called once for each retrieved preference. It is not called for other methods.

    Parameters

    • pref: nsIContentPref

      The retrieved preference.

    Returns void

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