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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="NSKeyedArchiver" up="Base">
<head>
<title>NSKeyedArchiver documentation</title>
<author name="Richard Frith-Macdonald">
<email address="rfm@gnu.org">
rfm@gnu.org
</email>
</author>
<copy>2004 Free Software Foundation, Inc.</copy>
</head>
<body>
<front><contents /></front>
<chapter>
<heading>
Software documentation for the NSKeyedArchiver class
</heading>
<class name="NSKeyedArchiver" super="NSCoder" ovadd="10.0.0">
<declared>Foundation/NSKeyedArchiver.h</declared>
<desc>
Implements <em>keyed</em> archiving of object
graphs. This archiver should be used instead of
<ref type="class" id="NSArchiver">NSArchiver</ref>
for new implementations. Classes implementing
<ref type="protocol" id="(NSCoding)"><NSCoding></ref>
should check the
<ref type="method" id="-allowsKeyedCoding" class="NSCoder">[NSCoder -allowsKeyedCoding]</ref> method and if the response is <code>YES</code>, encode/decode their fields using the <code>...forKey:</code>
<ref type="class" id="NSCoder">NSCoder</ref>
methods, which provide for more robust
forwards and backwards compatibility.
</desc>
<method type="BOOL" factory="yes" ovadd="10.0.0">
<sel>archiveRootObject:</sel>
<arg type="id">anObject</arg>
<sel>toFile:</sel>
<arg type="NSString*">aPath</arg>
<desc>
Encodes <var>anObject</var> and writes the
resulting data ti <var>aPath</var>.
</desc>
</method>
<method type="NSData*" factory="yes" ovadd="10.0.0">
<sel>archivedDataWithRootObject:</sel>
<arg type="id">anObject</arg>
<desc>
Encodes <var>anObject</var> and returns the
resulting data object.
</desc>
</method>
<method type="NSString*" factory="yes" ovadd="10.0.0">
<sel>classNameForClass:</sel>
<arg type="Class">aClass</arg>
<desc>
Returns the class name with which the
NSKeyedArchiver class will encode instances
of <var>aClass</var>, or <code>nil</code> if no name
mapping has been set using the
<ref type="method" id="+setClassName:forClass:">
+setClassName:forClass:
</ref>
method.
</desc>
</method>
<method type="void" factory="yes" ovadd="10.0.0">
<sel>setClassName:</sel>
<arg type="NSString*">aString</arg>
<sel>forClass:</sel>
<arg type="Class">aClass</arg>
<desc>
Sets the class name with which the NSKeyedArchiver
class will encode instances of <var>aClass</var>.
This mapping is used only if no class name mapping has
been set for the individual instance of
NSKeyedArchiver being used. <br /> The
value of <var>aString</var> must be the name of an
existing class. <br /> If the value of
<var>aString</var> is <code>nil</code>, any mapping
for <var>aClass</var> is removed.
</desc>
</method>
<method type="NSString*" ovadd="10.0.0">
<sel>classNameForClass:</sel>
<arg type="Class">aClass</arg>
<desc>
Returns any mapping for the name of
<var>aClass</var> which was previously set for the
receiver using the
<ref type="method" id="-setClassName:forClass:">
-setClassName:forClass:
</ref>
method. <br /> Returns <code>nil</code> if no such
mapping exists, even if one has been set using the
class method
<ref type="method" id="+setClassName:forClass:">
+setClassName:forClass:
</ref>
</desc>
</method>
<method type="id" ovadd="10.0.0">
<sel>delegate</sel>
<desc>
Returns the delegate set for the receiver, or
<code>nil</code> of none is set.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>encodeBool:</sel>
<arg type="BOOL">aBool</arg>
<sel>forKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Encodes <var>aBool</var> and associates the encoded
value with <var>aKey</var>.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>encodeBytes:</sel>
<arg type="const uint8_t*">aPointer</arg>
<sel>length:</sel>
<arg type="NSUInteger">length</arg>
<sel>forKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Encodes the data of the specified <var>length</var>
and pointed to by <var>aPointer</var>, and associates
the encoded value with <var>aKey</var>.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>encodeConditionalObject:</sel>
<arg type="id">anObject</arg>
<sel>forKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Encodes <var>anObject</var> and associates the
encoded value with <var>aKey</var>, but only if
<var>anObject</var> has already been encoded using
<ref type="method" id="-encodeObject:forKey:">
-encodeObject:forKey:
</ref>
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>encodeDouble:</sel>
<arg type="double">aDouble</arg>
<sel>forKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Encodes <var>aDouble</var> and associates the
encoded value with <var>aKey</var>.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>encodeFloat:</sel>
<arg type="float">aFloat</arg>
<sel>forKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Encodes <var>aFloat</var> and associates the
encoded value with <var>aKey</var>.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>encodeInt32:</sel>
<arg type="int32_t">anInteger</arg>
<sel>forKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Encodes <var>anInteger</var> and associates the
encoded value with <var>aKey</var>.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>encodeInt64:</sel>
<arg type="int64_t">anInteger</arg>
<sel>forKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Encodes <var>anInteger</var> and associates the
encoded value with <var>aKey</var>.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>encodeInt:</sel>
<arg type="int">anInteger</arg>
<sel>forKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Encodes <var>anInteger</var> and associates the
encoded value with <var>aKey</var>.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>encodeObject:</sel>
<arg type="id">anObject</arg>
<sel>forKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Encodes <var>anObject</var> and associates the
encoded value with <var>aKey</var>.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>finishEncoding</sel>
<desc>
Ends the encoding process and causes the encoded
archive to be placed in the mutable data object
supplied when the receiver was initialised. <br />
This method must be called at the end of encoding, and
nothing may be encoded after this method is called.
</desc>
</method>
<method type="id" ovadd="10.0.0">
<sel>initForWritingWithMutableData:</sel>
<arg type="NSMutableData*">data</arg>
<desc>
Initialise the receiver to encode an archive
into the supplied <var>data</var> object.
</desc>
</method>
<method type="NSPropertyListFormat" ovadd="10.0.0">
<sel>outputFormat</sel>
<desc>
Returns the output format of the archived data...
this should default to the MacOS-X binary format, but
we don't support that yet, so the
<ref type="method" id="-setOutputFormat:">
-setOutputFormat:
</ref>
method should be used to set a supported format.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>setClassName:</sel>
<arg type="NSString*">aString</arg>
<sel>forClass:</sel>
<arg type="Class">aClass</arg>
<desc>
Sets the name with which instances of
<var>aClass</var> are encoded. <br /> The value of
<var>aString</var> must be the name of an existing
class.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>setDelegate:</sel>
<arg type="id">anObject</arg>
<desc>
Sets the receivers delegate. The delegate should
conform to the NSObject(NSKeyedArchiverDelegate)
informal protocol. <br /> NB. the delegate is not
retained, so you must ensure that it is not
deallocated before the archiver has finished
with it.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>setOutputFormat:</sel>
<arg type="NSPropertyListFormat">format</arg>
<desc>
Specifies the output <var>format</var> of the
archived data... this should default to the
MacOS-X binary <var>format</var>, but we don't
support that yet, so the
<ref type="method" id="-setOutputFormat:">
-setOutputFormat:
</ref>
method should be used to set a supported
<var>format</var>.
</desc>
</method>
</class>
</chapter>
<chapter>
<heading>
Software documentation for the NSKeyedUnarchiver class
</heading>
<class name="NSKeyedUnarchiver" super="NSCoder" ovadd="10.0.0">
<declared>Foundation/NSKeyedArchiver.h</declared>
<desc>
Implements <em>keyed</em> unarchiving of object
graphs. The keyed archiver should be used instead of
<ref type="class" id="NSArchiver">NSArchiver</ref>
for new implementations. Classes implementing
<ref type="protocol" id="(NSCoding)"><NSCoding></ref>
should check the
<ref type="method" id="-allowsKeyedCoding" class="NSCoder">[NSCoder -allowsKeyedCoding]</ref> method and if the response is <code>YES</code>, encode/decode their fields using the <code>...forKey:</code>
<ref type="class" id="NSCoder">NSCoder</ref>
methods, which provide for more robust
forwards and backwards compatibility.
</desc>
<method type="Class" factory="yes" ovadd="10.0.0">
<sel>classForClassName:</sel>
<arg type="NSString*">aString</arg>
<desc>
Returns class substituted for class name specified
by <var>aString</var> when encountered in the archive
being decoded from, or <code>nil</code> if there is
no specific translation mapping. Each instance also
maintains a translation map, which is searched
first for a match during decoding.
</desc>
</method>
<method type="void" factory="yes" ovadd="10.0.0">
<sel>setClass:</sel>
<arg type="Class">aClass</arg>
<sel>forClassName:</sel>
<arg type="NSString*">aString</arg>
<desc>
Sets class substituted for class name specified by
<var>aString</var> when encountered in the archive
being decoded from, or <code>nil</code> if there is
no specific translation mapping. Each instance also
maintains a translation map, which is searched
first for a match during decoding.
</desc>
</method>
<method type="id" factory="yes" ovadd="10.0.0">
<sel>unarchiveObjectWithData:</sel>
<arg type="NSData*">data</arg>
<desc>
Decodes from byte array in <var>data</var> and
returns resulting root object.
</desc>
</method>
<method type="id" factory="yes" ovadd="10.0.0">
<sel>unarchiveObjectWithFile:</sel>
<arg type="NSString*">aPath</arg>
<desc>
Decodes from file contents at <var>aPath</var> and
returns resulting root object.
</desc>
</method>
<method type="Class" ovadd="10.0.0">
<sel>classForClassName:</sel>
<arg type="NSString*">aString</arg>
<desc>
Returns class substituted for class name specified
by <var>aString</var> when encountered in the archive
being decoded from, or <code>nil</code> if there is
no specific translation mapping. The class as a whole
also maintains a translation map, which is searched on
decoding if no match found here.
</desc>
</method>
<method type="BOOL" ovadd="10.0.0">
<sel>containsValueForKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Sets class substituted for class name specified by
aString when encountered in the archive being
decoded from, or <code>nil</code> if there is no
specific translation mapping. Each instance also
maintains a translation map, which is searched
first for a match during decoding.
</desc>
</method>
<method type="BOOL" ovadd="10.0.0">
<sel>decodeBoolForKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Returns a boolean value associated with
<var>aKey</var>. This value must previously have been
encoded using
<ref type="method" id="-encodeBool:forKey:">
-encodeBool:forKey:
</ref>
</desc>
</method>
<method type="const uint8_t*" ovadd="10.0.0">
<sel>decodeBytesForKey:</sel>
<arg type="NSString*">aKey</arg>
<sel>returnedLength:</sel>
<arg type="NSUInteger*">length</arg>
<desc>
Returns a pointer to a byte array associated with
<var>aKey</var>. <br /> Returns the <var>length</var>
of the data in aLength. <br /> This value must
previously have been encoded using
<ref type="method" id="-encodeBytes:length:forKey:">
-encodeBytes:length:forKey:
</ref>
</desc>
</method>
<method type="double" ovadd="10.0.0">
<sel>decodeDoubleForKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Returns a <strong>double</strong> value associated
with <var>aKey</var>. This value must previously have
been encoded using
<ref type="method" id="-encodeDouble:forKey:">
-encodeDouble:forKey:
</ref>
or
<ref type="method" id="-encodeFloat:forKey:">
-encodeFloat:forKey:
</ref>
</desc>
</method>
<method type="float" ovadd="10.0.0">
<sel>decodeFloatForKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Returns a <strong>float</strong> value associated
with <var>aKey</var>. This value must previously have
been encoded using
<ref type="method" id="-encodeFloat:forKey:">
-encodeFloat:forKey:
</ref>
or
<ref type="method" id="-encodeDouble:forKey:">
-encodeDouble:forKey:
</ref>
<br /> Precision may be lost (or an exception raised
if the value will not fit in a <strong>float</strong>)
if the value was encoded using
<ref type="method" id="-encodeDouble:forKey:">
-encodeDouble:forKey:
</ref>
,
</desc>
</method>
<method type="int32_t" ovadd="10.0.0">
<sel>decodeInt32ForKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Returns a 32-bit integer value associated with
<var>aKey</var>. This value must previously have been
encoded using
<ref type="method" id="-encodeInt:forKey:">
-encodeInt:forKey:
</ref>
,
<ref type="method" id="-encodeInt32:forKey:">
-encodeInt32:forKey:
</ref>
, or
<ref type="method" id="-encodeInt64:forKey:">
-encodeInt64:forKey:
</ref>
. <br /> An exception will be raised if the value does
not fit in a 32-bit integer.
</desc>
</method>
<method type="int64_t" ovadd="10.0.0">
<sel>decodeInt64ForKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Returns a 64-bit integer value associated with
<var>aKey</var>. This value must previously have been
encoded using
<ref type="method" id="-encodeInt:forKey:">
-encodeInt:forKey:
</ref>
,
<ref type="method" id="-encodeInt32:forKey:">
-encodeInt32:forKey:
</ref>
, or
<ref type="method" id="-encodeInt64:forKey:">
-encodeInt64:forKey:
</ref>
.
</desc>
</method>
<method type="int" ovadd="10.0.0">
<sel>decodeIntForKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Returns an integer value associated with
<var>aKey</var>. This value must previously have been
encoded using
<ref type="method" id="-encodeInt:forKey:">
-encodeInt:forKey:
</ref>
,
<ref type="method" id="-encodeInt32:forKey:">
-encodeInt32:forKey:
</ref>
, or
<ref type="method" id="-encodeInt64:forKey:">
-encodeInt64:forKey:
</ref>
. <br /> An exception will be raised if the value does
not fit in an integer.
</desc>
</method>
<method type="id" ovadd="10.0.0">
<sel>decodeObjectForKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Returns an object value associated with
<var>aKey</var>. This value must previously have been
encoded using
<ref type="method" id="-encodeObject:forKey:">
-encodeObject:forKey:
</ref>
or
<ref type="method" id="-encodeConditionalObject:forKey:">
-encodeConditionalObject:forKey:
</ref>
</desc>
</method>
<method type="id" ovadd="10.0.0">
<sel>delegate</sel>
<desc>
Returns the delegate of the unarchiver.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>finishDecoding</sel>
<desc>
Tells receiver that you are done retrieving from
archive, so the delegate should be allowed to
perform close-up operations.
</desc>
</method>
<method type="id" ovadd="10.0.0">
<sel>initForReadingWithData:</sel>
<arg type="NSData*">data</arg>
<desc>
Prepare to read <var>data</var> from key archive
(created by
<ref type="class" id="NSKeyedArchiver">NSKeyedArchiver</ref>
). Be sure to call
<ref type="method" id="-finishDecoding">
-finishDecoding
</ref>
when done.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>setClass:</sel>
<arg type="Class">aClass</arg>
<sel>forClassName:</sel>
<arg type="NSString*">aString</arg>
<desc>
Sets class substituted for class name specified by
<var>aString</var> when encountered in the archive
being decoded from, or <code>nil</code> if there is
no specific translation mapping. Each instance also
maintains a translation map, which is searched
first for a match during decoding.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>setDelegate:</sel>
<arg type="id">delegate</arg>
<desc>
Sets the receivers <var>delegate</var>. The
<var>delegate</var> should conform to the
NSObject(NSKeyedUnarchiverDelegate)
informal protocol. <br /> NB. the
<var>delegate</var> is not retained, so you must
ensure that it is not deallocated before the
unarchiver has finished with it.
</desc>
</method>
</class>
</chapter>
<chapter>
<heading>
Software documentation for the
NSCoder(NSGeometryKeyedCoding)
category
</heading>
<category name="NSGeometryKeyedCoding" class="NSCoder" ovadd="10.0.0">
<declared>Foundation/NSKeyedArchiver.h</declared>
<desc>
Methods for encoding/decoding points, rectangles, and
sizes.
</desc>
<method type="NSPoint" ovadd="10.0.0">
<sel>decodePointForKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Decodes an <code>NSPoint</code> object.
</desc>
</method>
<method type="NSRect" ovadd="10.0.0">
<sel>decodeRectForKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Decodes an <code>NSRect</code> object.
</desc>
</method>
<method type="NSSize" ovadd="10.0.0">
<sel>decodeSizeForKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Decodes an <code>NSSize</code> object.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>encodePoint:</sel>
<arg type="NSPoint">aPoint</arg>
<sel>forKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Encodes an <code>NSPoint</code> object.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>encodeRect:</sel>
<arg type="NSRect">aRect</arg>
<sel>forKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Encodes an <code>NSRect</code> object.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>encodeSize:</sel>
<arg type="NSSize">aSize</arg>
<sel>forKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
Encodes an <code>NSSize</code> object.
</desc>
</method>
</category>
</chapter>
<chapter>
<heading>
Software documentation for the
NSKeyedArchiver(Internal) category
</heading>
<category name="Internal" class="NSKeyedArchiver" ovadd="10.0.0">
<declared>Foundation/NSKeyedArchiver.h</declared>
<desc>
Internal methods. Do not use.
</desc>
<method type="void" ovadd="10.0.0">
<sel>_encodeArrayOfObjects:</sel>
<arg type="NSArray*">anArray</arg>
<sel>forKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
<em>Warning</em> the underscore at the start of the
name of this method indicates that it is private, for
internal use only, and you should not use the
method in your code. <br /> Internal method used to
encode an array relatively efficiently. <br /> Some
MacOS-X library classes seem to use this.
</desc>
</method>
<method type="void" ovadd="10.0.0">
<sel>_encodePropertyList:</sel>
<arg type="id">anObject</arg>
<sel>forKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
<em>Warning</em> the underscore at the start of the
name of this method indicates that it is private, for
internal use only, and you should not use the
method in your code.
</desc>
</method>
</category>
</chapter>
<chapter>
<heading>
Software documentation for the
NSKeyedUnarchiver(Internal)
category
</heading>
<category name="Internal" class="NSKeyedUnarchiver" ovadd="10.0.0">
<declared>Foundation/NSKeyedArchiver.h</declared>
<desc>
Internal methods. Do not use.
</desc>
<method type="id" ovadd="10.0.0">
<sel>_decodeArrayOfObjectsForKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
<em>Warning</em> the underscore at the start of the
name of this method indicates that it is private, for
internal use only, and you should not use the
method in your code. <br /> Internal method used to
decode an array relatively efficiently. <br /> Some
MacOS-X library classes seem to use this.
</desc>
</method>
<method type="id" ovadd="10.0.0">
<sel>_decodePropertyListForKey:</sel>
<arg type="NSString*">aKey</arg>
<desc>
<em>Warning</em> the underscore at the start of the
name of this method indicates that it is private, for
internal use only, and you should not use the
method in your code.
</desc>
</method>
<method type="BOOL" ovadd="10.0.0">
<sel>replaceObject:</sel>
<arg type="id">oldObj</arg>
<sel>withObject:</sel>
<arg type="id">newObj</arg>
<desc>
This method is used to replace <var>oldObj</var> with
<var>newObj</var> in the map that is maintained in
NSKeyedUnarchiver.
</desc>
</method>
</category>
</chapter>
<chapter>
<heading>
Software documentation for the
NSObject(NSKeyedArchiverDelegate)
category
</heading>
<category name="NSKeyedArchiverDelegate" class="NSObject" ovadd="10.0.0">
<declared>Foundation/NSKeyedArchiver.h</declared>
<desc>
Informal protocol implemented by delegates of
<ref type="class" id="NSKeyedArchiver">NSKeyedArchiver</ref>
.
</desc>
<method type="void" override="dummy" ovadd="10.0.0">
<sel>archiver:</sel>
<arg type="NSKeyedArchiver*">anArchiver</arg>
<sel>didEncodeObject:</sel>
<arg type="id">anObject</arg>
<desc>
Sent when encoding of <var>anObject</var> has
completed <em>except</em> in the case of
conditional encoding. <br />
</desc>
</method>
<method type="id" override="dummy" ovadd="10.0.0">
<sel>archiver:</sel>
<arg type="NSKeyedArchiver*">anArchiver</arg>
<sel>willEncodeObject:</sel>
<arg type="id">anObject</arg>
<desc>
Sent when <var>anObject</var> is about to be encoded
(or conditionally encoded) and provides the receiver
with an opportunity to change the actual object stored
into the archive by returning a different value
(otherwise it should return <var>anObject</var>
). <br /> The method is not called for encoding of
<code>nil</code> or for encoding of any object for
which has already been called. <br /> The method is
called <em>after</em> the
<ref type="method" id="-replacementObjectForKeyedArchiver:">-replacementObjectForKeyedArchiver:</ref> method. <br />
</desc>
</method>
<method type="void" override="dummy" ovadd="10.0.0">
<sel>archiver:</sel>
<arg type="NSKeyedArchiver*">anArchiver</arg>
<sel>willReplaceObject:</sel>
<arg type="id">anObject</arg>
<sel>withObject:</sel>
<arg type="id">newObject</arg>
<desc>
Sent whenever object replacement occurs during
encoding, either by the
<ref type="method" id="-replacementObjectForKeyedArchiver:">-replacementObjectForKeyedArchiver:</ref> method or because the delegate has returned a changed value using the <ref type="method" id="-archiver:willEncodeObject:">-archiver:willEncodeObject:</ref> method. <br />
</desc>
</method>
<method type="void" override="dummy" ovadd="10.0.0">
<sel>archiverDidFinish:</sel>
<arg type="NSKeyedArchiver*">anArchiver</arg>
<desc>
Sent when the encoding process is complete. <br />
</desc>
</method>
<method type="void" override="dummy" ovadd="10.0.0">
<sel>archiverWillFinish:</sel>
<arg type="NSKeyedArchiver*">anArchiver</arg>
<desc>
Sent when the encoding process is about to finish.
<br />
</desc>
</method>
</category>
</chapter>
<chapter>
<heading>
Software documentation for the
NSObject(NSKeyedArchiverObjectSubstitution)
category
</heading>
<category name="NSKeyedArchiverObjectSubstitution" class="NSObject" ovadd="10.0.0">
<declared>Foundation/NSKeyedArchiver.h</declared>
<desc>
Methods by which a class may control its archiving by
the
<ref type="class" id="NSKeyedArchiver">NSKeyedArchiver</ref>
.
</desc>
<method type="Class" ovadd="10.0.0">
<sel>classForKeyedArchiver</sel>
<desc>
This message is sent to objects being encoded, to
allow them to choose to be encoded a different class.
If this returns <code>nil</code> it is treated as if it
returned the class of the object. <br /> After
this method is applied, any class name mapping set in
the archiver is applied to its result. <br /> The
default implementation returns the result of the
<ref type="method" id="-classForArchiver">
-classForArchiver
</ref>
method.
</desc>
</method>
<method type="id" ovadd="10.0.0">
<sel>replacementObjectForKeyedArchiver:</sel>
<arg type="NSKeyedArchiver*">archiver</arg>
<desc>
This message is sent to objects being encoded, to
allow them to choose to be encoded a different object
by returning the alternative object. <br /> The default
implementation returns the result of calling
the
<ref type="method" id="-replacementObjectForArchiver:">
-replacementObjectForArchiver:
</ref>
method with a <code>nil</code> argument. <br /> This
is called only if no mapping has been set up in the
<var>archiver</var> already.
</desc>
</method>
</category>
</chapter>
<chapter>
<heading>
Software documentation for the
NSObject(NSKeyedUnarchiverDelegate)
category
</heading>
<category name="NSKeyedUnarchiverDelegate" class="NSObject" ovadd="10.0.0">
<declared>Foundation/NSKeyedArchiver.h</declared>
<desc>
Informal protocol implemented by delegates of
<ref type="class" id="NSKeyedUnarchiver">NSKeyedUnarchiver</ref>
.
</desc>
<method type="Class" override="dummy" ovadd="10.0.0">
<sel>unarchiver:</sel>
<arg type="NSKeyedUnarchiver*">anUnarchiver</arg>
<sel>cannotDecodeObjectOfClassName:</sel>
<arg type="NSString*">aName</arg>
<sel>originalClasses:</sel>
<arg type="NSArray*">classNames</arg>
<desc>
Sent if the named class is not available during
decoding. <br /> The value of <var>aName</var> is
the class name being decoded (after any name mapping
has been applied). <br /> The <var>classNames</var>
array contains the original name of the class encoded
in the archive, and is followed by each of its
superclasses in turn. <br /> The delegate may
either return a class object for the unarchiver to
use to continue decoding, or may return
<code>nil</code> to abort the decoding process.
<br />
</desc>
</method>
<method type="id" override="dummy" ovadd="10.0.0">
<sel>unarchiver:</sel>
<arg type="NSKeyedUnarchiver*">anUnarchiver</arg>
<sel>didDecodeObject:</sel>
<arg type="id">anObject</arg>
<desc>
Sent when <var>anObject</var> is decoded. The receiver
may return either <var>anObject</var> or some other
object (including <code>nil</code>). If a value
other than <var>anObject</var> is returned, it is
used to replace <var>anObject</var>. <br />
</desc>
</method>
<method type="void" override="dummy" ovadd="10.0.0">
<sel>unarchiver:</sel>
<arg type="NSKeyedUnarchiver*">anUnarchiver</arg>
<sel>willReplaceObject:</sel>
<arg type="id">anObject</arg>
<sel>withObject:</sel>
<arg type="id">newObject</arg>
<desc>
Sent whenever object replacement occurs during
decoding, eg by the
<ref type="method" id="-replacementObjectForKeyedArchiver:">-replacementObjectForKeyedArchiver:</ref> method. <br />
</desc>
</method>
<method type="void" override="dummy" ovadd="10.0.0">
<sel>unarchiverDidFinish:</sel>
<arg type="NSKeyedUnarchiver*">anUnarchiver</arg>
<desc>
Sent when unarchiving is about to complete. <br />
</desc>
</method>
<method type="void" override="dummy" ovadd="10.0.0">
<sel>unarchiverWillFinish:</sel>
<arg type="NSKeyedUnarchiver*">anUnarchiver</arg>
<desc>
Sent when unarchiving has been completed. <br />
</desc>
</method>
</category>
</chapter>
<chapter>
<heading>
Software documentation for the
NSObject(NSKeyedUnarchiverObjectSubstitution)
category
</heading>
<category name="NSKeyedUnarchiverObjectSubstitution" class="NSObject" ovadd="10.0.0">
<declared>Foundation/NSKeyedArchiver.h</declared>
<desc>
Methods by which a class may control its unarchiving
by the
<ref type="class" id="NSKeyedArchiver">NSKeyedArchiver</ref>
.
</desc>
<method type="Class" factory="yes" ovadd="10.0.0">
<sel>classForKeyedUnarchiver</sel>
<desc>
Sent during unarchiving to permit classes to
substitute a different class for decoded
instances of themselves. <br /> Default
implementation returns the receiver. <br />
Overrides the mappings set up within the
receiver.
</desc>
</method>
</category>
</chapter>
</body>
</gsdoc>
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