WebContinuation

A WebContinuation represents a continuation of a Flowscript. Because a user may click on the back button in the browser and restart a saved computation in a continuation, each WebContinuation becomes the parent of a subtree of continuations.

If there is no parent WebContinuation, the created continuation becomes the root of a tree of WebContinuations.

WebContinuation objects support the following functions and properties:

id

Property [String] id

Returns the unique string identifier of this Web Continuation.

continuation

Property [Continuation] continuation

Returns the JavaScript continuation associated with this Web Continuation.

previousBookmark

Property [WebContinuation] previousBookmark

Returns a reference to the first bookmark continuation among the pages preceding the one associated with this object, or null if no such bookmark continuation exists. The returned object is the continuation you would invoke to implement a "Back" button.

isBookmark

Function [Boolean] isBookmark()

Returns true if this continuation was not created by sendPageAndWait.

getParent

Function [WebContinuation] getParent()

Get the parent continuation of this continuation.

getChildren

Function [Array [WebContinuation]] getChildren()

Get the child continuations of this continuation.

invalidate

Function invalidate()

Invalidates a WebContinuation. This effectively means that the continuation object associated with it will no longer be accessible from Web pages. Invalidating a WebContinuation invalidates all the WebContinuations which are children of it.