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<title>NSNotificationQueue class reference</title>
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<a href="Base.html">Up</a>
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<h1><a name="title$NSNotificationQueue">NSNotificationQueue class reference</a></h1>
<h3>Authors</h3>
<dl>
<dt>Mircea Oancea (<a href="mailto:mircea@jupiter.elcom.pub.ro"><code>mircea@jupiter.elcom.pub.ro</code></a>)</dt>
<dd>
</dd>
<dt>Richard Frith-Macdonald (<a href="mailto:richard@brainstorm.co.uk"><code>richard@brainstorm.co.uk</code></a>)</dt>
<dd>
</dd>
</dl>
<p><b>Copyright:</b> (C) 1995-1999 Free Software Foundation, Inc.</p>
<div>
</div>
<h1><a name="001000000000">
Software documentation for the NSNotificationQueue
class
</a></h1>
<h2><a name="class$NSNotificationQueue">NSNotificationQueue</a> : <a rel="gsdoc" href="NSObject.html#class$NSObject">NSObject</a></h2>
<blockquote class="declared">
<dl>
<dt><b>Declared in:</b></dt>
<dd>Foundation/NSNotificationQueue.h</dd>
</dl>
</blockquote>
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
This class supports asynchronous posting of
<a rel="gsdoc" href="NSNotification.html#class$NSNotification">NSNotification</a>
s to an
<a rel="gsdoc" href="NSNotification.html#class$NSNotificationCenter">NSNotificationCenter</a>
. The method to add a notification to the queue returns
immediately. The queue will periodically
post its oldest notification to the notification
center. In a multithreaded process, notifications
are always sent on the thread that they are posted
from.
</div>
<hr width="50%" align="left" />
<a href="#_NSNotificationQueue_ivars">Instance Variables</a>
<br/><br/>
<b>Method summary</b>
<ul>
<li><a rel="gsdoc" href="NSNotificationQueue.html#method$NSNotificationQueue+defaultQueue">+defaultQueue</a></li>
<li><a rel="gsdoc" href="NSNotificationQueue.html#method$NSNotificationQueue-dequeueNotificationsMatching$coalesceMask$">-dequeueNotificationsMatching:coalesceMask:</a></li>
<li><a rel="gsdoc" href="NSNotificationQueue.html#method$NSNotificationQueue-enqueueNotification$postingStyle$">-enqueueNotification:postingStyle:</a></li>
<li><a rel="gsdoc" href="NSNotificationQueue.html#method$NSNotificationQueue-enqueueNotification$postingStyle$coalesceMask$forModes$">-enqueueNotification:postingStyle:coalesceMask:forModes:</a></li>
<li><a rel="gsdoc" href="NSNotificationQueue.html#method$NSNotificationQueue-initWithNotificationCenter$">-initWithNotificationCenter:</a></li>
</ul>
<hr width="50%" align="left" />
<div class="method">
<h3><a name="method$NSNotificationQueue+defaultQueue">defaultQueue </a></h3>
+ (<a rel="gsdoc" href="#class$NSNotificationQueue">NSNotificationQueue</a>*) <b>defaultQueue</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Returns the default notification queue for use in
this thread. It will always post notifications to the
default notification center (for the entire task,
which may have multiple threads and therefore
multiple notification queues).
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSNotificationQueue-dequeueNotificationsMatching$coalesceMask$">dequeueNotificationsMatching: coalesceMask: </a></h3>
- (void) <b>dequeueNotificationsMatching:</b> (<a rel="gsdoc" href="NSNotification.html#class$NSNotification">NSNotification</a>*)notification<b> coalesceMask:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSUInteger">NSUInteger</a>)coalesceMask;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Immediately remove all notifications from queue
matching <var>notification</var> on name and/or
object as specified by coalesce mask, which is an OR
(' <code>|</code> ') of the options
<code>NSNotificationCoalescingOnName</code>,
<code>NSNotificationCoalescingOnSender</code>
(object), and
<code>NSNotificationNoCoalescing</code> (match only
the given instance exactly). If both of the first
options are specified, notifications must match on
both attributes (not just either one). Removed
notifications are <em>not</em> posted.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSNotificationQueue-enqueueNotification$postingStyle$">enqueueNotification: postingStyle: </a></h3>
- (void) <b>enqueueNotification:</b> (<a rel="gsdoc" href="NSNotification.html#class$NSNotification">NSNotification</a>*)notification<b> postingStyle:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSPostingStyle">NSPostingStyle</a>)postingStyle;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Sets <var>notification</var> to be posted to
<var>notification</var> center at time dependent on
<var>postingStyle</var>, which may be either
<code>NSPostNow</code> (synchronous post),
<code>NSPostASAP</code> (post soon), or
<code>NSPostWhenIdle</code> (post when runloop is
idle).
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSNotificationQueue-enqueueNotification$postingStyle$coalesceMask$forModes$">enqueueNotification: postingStyle: coalesceMask: forModes: </a></h3>
- (void) <b>enqueueNotification:</b> (<a rel="gsdoc" href="NSNotification.html#class$NSNotification">NSNotification</a>*)notification<b> postingStyle:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSPostingStyle">NSPostingStyle</a>)postingStyle<b> coalesceMask:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSUInteger">NSUInteger</a>)coalesceMask<b> forModes:</b> (<a rel="gsdoc" href="NSArray.html#class$NSArray">NSArray</a>*)modes;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Sets <var>notification</var> to be posted to
<var>notification</var> center at time dependent on
<var>postingStyle</var>, which may be either
<code>NSPostNow</code> (synchronous post),
<code>NSPostASAP</code> (post soon), or
<code>NSPostWhenIdle</code> (post when runloop is
idle). <var>coalesceMask</var> determines whether
this <var>notification</var> should be considered same
as other ones already on the queue, in which case they
are removed through a call to
<a rel="gsdoc" href="#method$NSNotificationQueue-dequeueNotificationsMatching$coalesceMask$">-dequeueNotificationsMatching:coalesceMask:</a>
. The <var>modes</var> argument determines which
<a rel="gsdoc" href="NSRunLoop.html#class$NSRunLoop">NSRunLoop</a>
mode <var>notification</var> may be posted in (
<code>nil</code> means NSDefaultRunLoopMode).
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSNotificationQueue-initWithNotificationCenter$">initWithNotificationCenter: </a></h3>
- (id) <b>initWithNotificationCenter:</b> (<a rel="gsdoc" href="NSNotification.html#class$NSNotificationCenter">NSNotificationCenter</a>*)notificationCenter;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Initialize a new instance to post notifications
to the given <var>notificationCenter</var> (instead of
the default).
</div>
<hr width="25%" align="left" />
</div>
<a name="_NSNotificationQueue_ivars"/> <br/><hr width="50%" align="left" />
<h2>Instance Variables for NSNotificationQueue Class</h2>
<h3><a name="ivariable$NSNotificationQueue*_asapQueue">_asapQueue</a></h3>
@public struct _NSNotificationQueueList* <b>_asapQueue</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSNotificationQueue*_center">_center</a></h3>
@public NSNotificationCenter* <b>_center</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSNotificationQueue*_idleQueue">_idleQueue</a></h3>
@public struct _NSNotificationQueueList* <b>_idleQueue</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSNotificationQueue*_zone">_zone</a></h3>
@public NSZone* <b>_zone</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
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