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<?xml version="1.0"?>
<!DOCTYPE gsdoc PUBLIC "-//GNUstep//DTD gsdoc 1.0.4//EN" "http://www.gnustep.org/gsdoc-1_0_4.dtd">
<gsdoc base="NSNotificationQueue" up="Base">
<head>
<title>NSNotificationQueue class reference</title>
<author name="Mircea Oancea">
<email address="mircea@jupiter.elcom.pub.ro">
mircea@jupiter.elcom.pub.ro
</email>
</author>
<author name="Richard Frith-Macdonald">
<email address="richard@brainstorm.co.uk">
richard@brainstorm.co.uk
</email>
</author>
<copy>1995-1999 Free Software Foundation, Inc.</copy>
</head>
<body>
<front><contents /></front>
<chapter>
<heading>
Software documentation for the NSNotificationQueue
class
</heading>
<class name="NSNotificationQueue" super="NSObject" ovadd="1.0.0">
<declared>Foundation/NSNotificationQueue.h</declared>
<desc>
This class supports asynchronous posting of
<ref type="class" id="NSNotification">NSNotification</ref>
s to an
<ref type="class" id="NSNotificationCenter">NSNotificationCenter</ref>
. 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.
</desc>
<ivariable type="struct _NSNotificationQueueList*" name="_asapQueue" validity="public" ovadd="1.0.0">
<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.
</desc>
</ivariable>
<ivariable type="NSNotificationCenter*" name="_center" validity="public" ovadd="1.0.0">
<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.
</desc>
</ivariable>
<ivariable type="struct _NSNotificationQueueList*" name="_idleQueue" validity="public" ovadd="1.0.0">
<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.
</desc>
</ivariable>
<ivariable type="NSZone*" name="_zone" validity="public" ovadd="1.0.0">
<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.
</desc>
</ivariable>
<method type="NSNotificationQueue*" factory="yes" ovadd="1.0.0">
<sel>defaultQueue</sel>
<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).
</desc>
</method>
<method type="void" ovadd="1.0.0">
<sel>dequeueNotificationsMatching:</sel>
<arg type="NSNotification*">notification</arg>
<sel>coalesceMask:</sel>
<arg type="NSUInteger">coalesceMask</arg>
<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.
</desc>
</method>
<method type="void" ovadd="1.0.0">
<sel>enqueueNotification:</sel>
<arg type="NSNotification*">notification</arg>
<sel>postingStyle:</sel>
<arg type="NSPostingStyle">postingStyle</arg>
<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).
</desc>
</method>
<method type="void" ovadd="1.0.0">
<sel>enqueueNotification:</sel>
<arg type="NSNotification*">notification</arg>
<sel>postingStyle:</sel>
<arg type="NSPostingStyle">postingStyle</arg>
<sel>coalesceMask:</sel>
<arg type="NSUInteger">coalesceMask</arg>
<sel>forModes:</sel>
<arg type="NSArray*">modes</arg>
<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
<ref type="method" id="-dequeueNotificationsMatching:coalesceMask:">-dequeueNotificationsMatching:coalesceMask:</ref>. The <var>modes</var> argument determines which
<ref type="class" id="NSRunLoop">NSRunLoop</ref>
mode <var>notification</var> may be posted in (
<code>nil</code> means NSDefaultRunLoopMode).
</desc>
</method>
<method type="id" ovadd="1.0.0">
<sel>initWithNotificationCenter:</sel>
<arg type="NSNotificationCenter*">notificationCenter</arg>
<desc>
Initialize a new instance to post notifications
to the given <var>notificationCenter</var> (instead of
the default).
</desc>
</method>
</class>
</chapter>
</body>
</gsdoc>
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