Struct xpcom::interfaces::nsIAppShell [] [src]

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

interface nsIAppShell : nsISupports

/**
 * Interface for the native event system layer.  This interface is designed
 * to be used on the main application thread only.
 */

Methods

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

impl nsIAppShell
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/**
   * Enter an event loop.  Don't leave until exit() is called.
   */

void run ();

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/**
   * Exit the handle event loop
   */

void exit ();

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/**
   * Give hint to native event queue notification mechanism. If the native
   * platform needs to tradeoff performance vs. native event starvation this
   * hint tells the native dispatch code which to favor.  The default is to
   * prevent native event starvation.
   *
   * Calls to this function may be nested. When the number of calls that pass
   * PR_TRUE is subtracted from the number of calls that pass PR_FALSE is
   * greater than 0, performance is given precedence over preventing event
   * starvation.
   *
   * The starvationDelay arg is only used when favorPerfOverStarvation is
   * PR_FALSE. It is the amount of time in milliseconds to wait before the
   * PR_FALSE actually takes effect.
   */

void favorPerformanceHint (in boolean favorPerfOverStarvation, in unsigned long starvationDelay);

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/**
   * Suspends the use of additional platform-specific methods (besides the
   * nsIAppShell->run() event loop) to run Gecko events on the main
   * application thread.  Under some circumstances these "additional methods"
   * can cause Gecko event handlers to be re-entered, sometimes leading to
   * hangs and crashes.  Calls to suspendNative() and resumeNative() may be
   * nested.  On some platforms (those that don't use any "additional
   * methods") this will be a no-op.  Does not (in itself) stop Gecko events
   * from being processed on the main application thread.  But if the
   * nsIAppShell->run() event loop is blocked when this call is made, Gecko
   * events will stop being processed until resumeNative() is called (even
   * if a plugin or library is temporarily processing events on a nested
   * event loop).
   */

void suspendNative ();

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/**
   * Resumes the use of additional platform-specific methods to run Gecko
   * events on the main application thread.  Calls to suspendNative() and
   * resumeNative() may be nested.  On some platforms this will be a no-op.
   */

void resumeNative ();

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/**
   * The current event loop nesting level.
   */

readonly attribute unsigned long eventloopNestingLevel;

Methods from Deref<Target = nsISupports>

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Cast this nsISupports to one of its base interfaces.

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void QueryInterface (in nsIIDRef uuid, [iid_is (uuid), retval] out nsQIResult result);

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[noscript,notxpcom] nsrefcnt AddRef ();

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[noscript,notxpcom] nsrefcnt Release ();

Trait Implementations

impl XpCom for nsIAppShell
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IID: nsIID = nsID(2094384925, 8763, 19198, [147, 29, 94, 237, 177, 242, 176, 31])

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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 nsIAppShell
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Increment the reference count.

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Decrement the reference count, potentially freeing backing memory.

impl Deref for nsIAppShell
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The resulting type after dereferencing.

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Dereferences the value.