Struct xpcom::interfaces::nsILoadGroup [] [src]

#[repr(C)]
pub struct nsILoadGroup { /* fields omitted */ }

interface nsILoadGroup : nsIRequest

Methods

impl nsILoadGroup
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Cast this nsILoadGroup to one of its base interfaces.

impl nsILoadGroup
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/**
 * A load group maintains a collection of nsIRequest objects.
 * This is used in lots of places where groups of requests need to be tracked.
 * For example, nsIDocument::mDocumentLoadGroup is used to track all requests
 * made for subdocuments in order to track page load progress and allow all
 * requests made on behalf of the document to be stopped, etc.
 */
/**
     * The group observer is notified when requests are added to and removed
     * from this load group.  The groupObserver is weak referenced.
     */

attribute nsIRequestObserver groupObserver;

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/**
 * A load group maintains a collection of nsIRequest objects.
 * This is used in lots of places where groups of requests need to be tracked.
 * For example, nsIDocument::mDocumentLoadGroup is used to track all requests
 * made for subdocuments in order to track page load progress and allow all
 * requests made on behalf of the document to be stopped, etc.
 */
/**
     * The group observer is notified when requests are added to and removed
     * from this load group.  The groupObserver is weak referenced.
     */

attribute nsIRequestObserver groupObserver;

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/**
     * Accesses the default load request for the group.  Each time a number
     * of requests are added to a group, the defaultLoadRequest may be set
     * to indicate that all of the requests are related to a base request.
     *
     * The load group inherits its load flags from the default load request.
     * If the default load request is NULL, then the group's load flags are
     * not changed.
     */

attribute nsIRequest defaultLoadRequest;

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/**
     * Accesses the default load request for the group.  Each time a number
     * of requests are added to a group, the defaultLoadRequest may be set
     * to indicate that all of the requests are related to a base request.
     *
     * The load group inherits its load flags from the default load request.
     * If the default load request is NULL, then the group's load flags are
     * not changed.
     */

attribute nsIRequest defaultLoadRequest;

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/**
     * Adds a new request to the group.  This will cause the default load
     * flags to be applied to the request.  If this is a foreground
     * request then the groupObserver's onStartRequest will be called.
     *
     * If the request is the default load request or if the default load
     * request is null, then the load group will inherit its load flags from
     * the request.
     */

void addRequest (in nsIRequest aRequest, in nsISupports aContext);

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/**
     * Removes a request from the group.  If this is a foreground request
     * then the groupObserver's onStopRequest will be called.
     *
     * By the time this call ends, aRequest will have been removed from the
     * loadgroup, even if this function throws an exception.
     */

void removeRequest (in nsIRequest aRequest, in nsISupports aContext, in nsresult aStatus);

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/**
     * Returns the requests contained directly in this group.
     * Enumerator element type: nsIRequest.
     */

readonly attribute nsISimpleEnumerator requests;

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/**
     * Returns the count of "active" requests (ie. requests without the
     * LOAD_BACKGROUND bit set).
     */

readonly attribute unsigned long activeCount;

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/**
     * Notification callbacks for the load group.
     */

attribute nsIInterfaceRequestor notificationCallbacks;

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/**
     * Notification callbacks for the load group.
     */

attribute nsIInterfaceRequestor notificationCallbacks;

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/**
     * Context for managing things like js/css connection blocking,
     * and per-tab connection grouping.
     */

readonly attribute unsigned long long requestContextID;

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/**
     * The set of load flags that will be added to all new requests added to
     * this group. Any existing requests in the load group are not modified,
     * so it is expected these flags will be added before requests are added
     * to the group - typically via nsIDocShell::defaultLoadFlags on a new
     * docShell.
     * Note that these flags are *not* added to the default request for the
     * load group; it is expected the default request will already have these
     * flags (again, courtesy of setting nsIDocShell::defaultLoadFlags before
     * the docShell has created the default request.)
     */

attribute nsLoadFlags defaultLoadFlags;

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/**
     * The set of load flags that will be added to all new requests added to
     * this group. Any existing requests in the load group are not modified,
     * so it is expected these flags will be added before requests are added
     * to the group - typically via nsIDocShell::defaultLoadFlags on a new
     * docShell.
     * Note that these flags are *not* added to the default request for the
     * load group; it is expected the default request will already have these
     * flags (again, courtesy of setting nsIDocShell::defaultLoadFlags before
     * the docShell has created the default request.)
     */

attribute nsLoadFlags defaultLoadFlags;

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/**
     * The cached user agent override created by UserAgentOverrides.jsm. Used
     * for all sub-resource requests in the loadgroup.
     */

attribute ACString userAgentOverrideCache;

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/**
     * The cached user agent override created by UserAgentOverrides.jsm. Used
     * for all sub-resource requests in the loadgroup.
     */

attribute ACString userAgentOverrideCache;

Methods from Deref<Target = nsIRequest>

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Cast this nsIRequest to one of its base interfaces.

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/**
     * The name of the request.  Often this is the URI of the request.
     */

readonly attribute AUTF8String name;

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/**
     * Indicates whether the request is pending. nsIRequest::isPending is
     * true when there is an outstanding asynchronous event that will make
     * the request no longer be pending.  Requests do not necessarily start
     * out pending; in some cases, requests have to be explicitly initiated
     * (e.g. nsIChannel implementations are only pending once asyncOpen
     * returns successfully).
     *
     * Requests can become pending multiple times during their lifetime.
     *
     * @return TRUE if the request has yet to reach completion.
     * @return FALSE if the request has reached completion (e.g., after
     *   OnStopRequest has fired).
     * @note Suspended requests are still considered pending.
     */

boolean isPending ();

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/**
     * The error status associated with the request.
     */

readonly attribute nsresult status;

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/**
     * Cancels the current request.  This will close any open input or
     * output streams and terminate any async requests.  Users should
     * normally pass NS_BINDING_ABORTED, although other errors may also
     * be passed.  The error passed in will become the value of the
     * status attribute.
     *
     * Implementations must not send any notifications (e.g. via
     * nsIRequestObserver) synchronously from this function. Similarly,
     * removal from the load group (if any) must also happen asynchronously.
     *
     * Requests that use nsIStreamListener must not call onDataAvailable
     * anymore after cancel has been called.
     *
     * @param aStatus the reason for canceling this request.
     *
     * NOTE: most nsIRequest implementations expect aStatus to be a
     * failure code; however, some implementations may allow aStatus to
     * be a success code such as NS_OK.  In general, aStatus should be
     * a failure code.
     */

void cancel (in nsresult aStatus);

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/**
     * Suspends the current request.  This may have the effect of closing
     * any underlying transport (in order to free up resources), although
     * any open streams remain logically opened and will continue delivering
     * data when the transport is resumed.
     *
     * Calling cancel() on a suspended request must not send any
     * notifications (such as onstopRequest) until the request is resumed.
     *
     * NOTE: some implementations are unable to immediately suspend, and
     * may continue to deliver events already posted to an event queue. In
     * general, callers should be capable of handling events even after
     * suspending a request.
     */

void suspend ();

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/**
     * Resumes the current request.  This may have the effect of re-opening
     * any underlying transport and will resume the delivery of data to
     * any open streams.
     */

void resume ();

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/**
     * The load group of this request.  While pending, the request is a
     * member of the load group.  It is the responsibility of the request
     * to implement this policy.
     */

attribute nsILoadGroup loadGroup;

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/**
     * The load group of this request.  While pending, the request is a
     * member of the load group.  It is the responsibility of the request
     * to implement this policy.
     */

attribute nsILoadGroup loadGroup;

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/**
     * The load flags of this request.  Bits 0-15 are reserved.
     *
     * When added to a load group, this request's load flags are merged with
     * the load flags of the load group.
     */

attribute nsLoadFlags loadFlags;

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/**
     * The load flags of this request.  Bits 0-15 are reserved.
     *
     * When added to a load group, this request's load flags are merged with
     * the load flags of the load group.
     */

attribute nsLoadFlags loadFlags;

Trait Implementations

impl XpCom for nsILoadGroup
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IID: nsIID = nsID(4039669541, 31285, 17980, [156, 235, 44, 7, 242, 52, 6, 204])

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Perform a QueryInterface call on this object, attempting to dynamically cast it to the requested interface type. Returns Some(RefPtr) if the cast succeeded, and None otherwise. Read more

impl RefCounted for nsILoadGroup
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Increment the reference count.

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Decrement the reference count, potentially freeing backing memory.

impl Deref for nsILoadGroup
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The resulting type after dereferencing.

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Dereferences the value.