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revision 1.3 by wakaba, Sun Dec 2 04:46:21 2007 UTC revision 1.17 by wakaba, Tue Dec 4 11:01:49 2007 UTC
# Line 3  Line 3 
3  <head>  <head>
4  <title>DOM Document Type Definition Module</title>  <title>DOM Document Type Definition Module</title>
5  <link rel="stylesheet" href="http://suika.fam.cx/www/style/html/spec">  <link rel="stylesheet" href="http://suika.fam.cx/www/style/html/spec">
6    <link rel="stylesheet" href="http://suika.fam.cx/www/style/def/dom">
7  <link rel="license" href="http://suika.fam.cx/c/gnu/fdl">  <link rel="license" href="http://suika.fam.cx/c/gnu/fdl">
8  </head>  </head>
9  <body class="has-abstract">  <body class="has-abstract">
10    
11  <div class="header">  <div class="header">
12  <h1>DOM Document Type Definition Module</h1>  <h1>DOM Document Type Definition Module</h1>
13  <h2>Working Draft <time datetime=2007-12-01>1 December 2007</time></h2>  <h2>Working Draft <time datetime=2007-12-03>3 December 2007</time></h2>
14    
15  <dl class="versions-uri">  <dl class="versions-uri">
16  <dt>This Version</dt>  <dt>This Version</dt>
# Line 124  raised is undefined.</p> Line 125  raised is undefined.</p>
125  interface.</p>  interface.</p>
126    
127  <p class=ed>@@ ref to DOM Binding Spec</p>  <p class=ed>@@ ref to DOM Binding Spec</p>
128    
129    <p>If the <code>strictErrorChecking</code> attribute of the
130    <code>Document</code> node is <code>false</code>, the methods are
131    not required to raise exceptions <span class=ed>[DOM3]</span>.</p>
132  </div>  </div>
133    
134  <div class=section id=dom-dtdef>  <div class=section id=dom-dtdef>
# Line 138  consists of three interfaces:</p> Line 143  consists of three interfaces:</p>
143  <li><a href="#AttributeDefinition"><code>AttributeDefinition</code></a></li>  <li><a href="#AttributeDefinition"><code>AttributeDefinition</code></a></li>
144  </ul>  </ul>
145    
146  <p>In addition, it adds methods, attributes, and/or constants to interfaces  <p>In addition, it modifies interfaces
147  <a href="#Node"><code>Node</code></a>,  <a href="#Node"><code>Node</code></a>,
148    <a href="#DocumentType"><code>DocumentType</code></a>,
149  <a href="#Entity"><code>Entity</code></a>,  <a href="#Entity"><code>Entity</code></a>,
150  <a href="#EntityReference"><code>EntityReference</code></a>, and  <a href="#EntityReference"><code>EntityReference</code></a>,
151  <a href="#Notation"><code>Notation</code></a>.  <a href="#Notation"><code>Notation</code></a>, and
152  It modifies semantics of some of methods and attributes in  <a href="#ProcessingInstruction"><code>ProcessingInstruction</code></a>.</p>
 <a href="#Node"><code>Node</code></a> and  
 <a href="#ProcessingInstruction"><code>ProcessingInstruction</code></a>  
 interfaces, for the support of new interfaces.</p>  
153    
154  <div class=section id=features>  <div class=section id=features>
155  <h3>Feature Name</h3>  <h3>Feature Name</h3>
# Line 171  feature names with or without version nu Line 174  feature names with or without version nu
174  aforementioned cases.</p>  aforementioned cases.</p>
175  </div>  </div>
176    
177    <div class=section id=section-node>
178    <h3>Modifications to the <code id=Node>Node</code> Interface</h3>
179    
180    <p>The implementation of the
181    <a href="#Node"><code>Node</code></a> interface
182    <em class=rfc2119>MUST</em> be modified as following:</p>
183    <pre class=idl><code>// Additions to the Node interface
184    
185    // Additions to the NodeType definition group
186    const unsigned short <a href="#ELEMENT_TYPE_DEFINITION_NODE">ELEMENT_TYPE_DEFINITION_NODE</a> = 81001;
187    const unsigned short <a href="#ATTRIBUTE_DEFINITION_NODE">ATTRIBUTE_DEFINITION_NODE</a> = 81002;
188    </pre>
189    
190    <p>This specification adds two new types (subinterfaces) of
191    <a href="#Node"><code>Node</code></a>: element type definition (node type
192    <a href="#ELEMENT_TYPE_DEFINITION_NODE"><code>ELEMENT_TYPE_DEFINITION_NODE</code></a>,
193    interface
194    <a href="#ElementTypeDefinition"><code>ElementTypeDefinition</code></a>) and
195    attribute definition (node type
196    <a href="#ATTRIBUTE_DEFINITION_NODE"><code>ATTRIBUTE_DEFINITION_NODE</code></a>,
197    interface
198    <a href="#AttributeDefinition"><code>AttributeDefinition</code></a>).  For
199    these kinds of nodes, methods and attributes in the
200    <a href="#Node"><code>Node</code></a> interface must behave as following:</p>
201    
202    <dl>
203    <dt><code id=attributes>attributes</code></dt>
204      <dd>
205        <p>On getting, the attribute <em class=rfc2119>MUST</em> return
206        <code>null</code>.</p>
207      </dd>
208    <dt><code id=baseURI>baseURI</code></dt>
209      <dd>
210        <p>On getting, the attribute <em class=rfc2119>MUST</em> return the
211        value of the <a href="#baseURI"><code>baseURI</code></a> attribute
212        of the node in the <code>ownerDocument</code> attribute of the node.
213        Note that the value might be <code>null</code>.</p>
214      </dd>
215    <dt><code id=nodeName>nodeName</code></dt>
216      <dd>
217        <p>If the node is an
218        <a href="#ElementTypeDefinition"><code>ElementTypeDefinition</code></a>:
219        On getting, the attribute <em class=rfc2119>MUST</em> return the
220        name of the element type definition represented by the node.</p>
221    
222        <p>If the node is an
223        <a href="#AttributeDefinition"><code>AttributeDefinition</code></a>:
224        On getting, the attribute <em class=rfc2119>MUST</em> return the
225        name of the attribute definition represented by the node.</p>
226      </dd>
227    <dt><code id=nodeType>nodeType</code></dt>
228      <dd>
229        <p>On getting, the attribute <em class=rfc2119>MUST</em> return
230        <a href="#ELEMENT_TYPE_DEFINITION_NODE"><code>ELEMENT_TYPE_DEFINITION_NODE</code></a>
231        (if the node is an
232        <a href="#ElementTypeDefinition"><code>ElementTypeDefinition</code></a>) or
233        <a href="#ATTRIBUTE_DEFINITION_NODE"><code>ATTRIBUTE_DEFINITION_NODE</code></a>
234        (if the node is an
235        <a href="#AttributeDefinition"><code>AttributeDefinition</code></a>).</p>
236    
237        <!-- NodeType -->
238    <p>Two constants are added to the <code id=NodeType>NodeType</code>
239    definition group of the <a href="#Node"><code>Node</code></a> interface as
240    following:</p>
241    <table>
242    <thead>
243    <tr><th scope=col>Name<th scope=col>Value<th scope=col>Description</tr>
244    </thead>
245    <tbody>
246    <tr>
247    <th scope=row><dfn id=ELEMENT_TYPE_DEFINITION_NODE class=dom-const><code>ELEMENT_TYPE_DEFINITION_NODE</code></dfn>
248    <td><code>81001</code><td>The node is an
249    <a href="#ElementTypeDefinition"><code>ElementTypeDefinition</code></a>.</tr>
250    <tr>
251    <th scope=row><dfn id=ATTRIBUTE_DEFINITION_NODE class=dom-const><code>ATTRIBUTE_DEFINITION_NODE</code></dfn>
252    <td><code>81002</code><td>The node is an
253    <a href="#ElementTypeDefinition"><code>AttributeDefinition</code></a>.</tr>
254    </tbody>
255    </table>
256      </dd>
257    <dt><code id=nodeValue>nodeValue</code> and
258    <code id=textContent>textContent</code></dt>
259      <dd>
260        <p>If the node is an
261        <a href="#ElementTypeDefinition"><code>ElementTypeDefinition</code></a>:
262        On getting, the attributes <em class=rfc2119>MUST</em> return the
263        name of the element type.</p>
264    
265        <div class="note memo">
266          <p>Thus, on setting the attributes does nothing
267          <span class=ed>[DOM3]</span>.</p>
268        </div>
269    
270        <p>On setting, the <a href="#textContent"><code>textContent</code></a>
271        attribute <em class=rfc2119>MUST NOT</em> raise a
272        <code>NO_MODIFICATION_ALLOWED_ERR</code> <span class=ed>@@ ref</span>.
273        <span class=ed>@@ I forgot why this requirement is necessary.</span></p>
274    
275        <p>If the node is an
276        <a href="#AttributeDefinition"><code>AttributeDefinition</code></a>:</p>
277    
278        <pre class=ed>
279    The getter of the [CODE(DOMa)@en[[[nodeValue]]]] attribute
280    of an [CODE(DOMi)@en[[[AttributeDefinition]]]] object
281    [['''MUST''']] return the normalized default value
282    of the attribute.
283    
284    @@
285    
286    [4] The getter of the [CODE(DOMa)@en[[[textContent]]]]
287    attribute of an [CODE(DOMi)@en[[[AttributeDefinition]]]]
288    object [['''MUST''']] behave as if it were an
289    [CODE(DOMi)@en[[[Attr]]]] object.
290    
291    The setter of the [CODE(DOMa)@en[[[textContent]]]] attribute
292    of an [CODE(DOMi)@en[[[AttributeDefinition]]]] object
293    [['''MUST''']] behave as if the following algorithm
294    is performed:
295    = If the [CODE(DOMi)@en[[[AttributeDefinition]]]]
296    object is read-only, then throw an
297    [CODE(DOMc)@en[[[NO_MODIFICATION_ALLOWED_ERR]]]].
298    = Remove any child node the node has.
299    = If the new value is not empty and not [CODE(IDL)@en[[[null]]]],
300    then create a [CODE(DOMi)@en[[[Text]]]] node
301    whose [CODE(DOMa)@en[[[data]]]] is the new value
302    and append it to the [CODE(DOMi)@en[[[AttributeDefinition]]]].
303    </pre>
304      </dd>
305    <dt class=ed>@@ ...</dt>
306    </dl>
307    
308    </div>
309    
310    <div class=section id=section-documentxdoctype>
311    <h3>The <code>DocumentXDoctype</code> Interface</h3>
312    
313    <p>The <a href="#DocumentXDoctype"><code>DocumentXDoctype</code></a> interface
314    <em class=rfc2119>MUST</em> be implemented as following:</p>
315    <pre class=idl><code>interface <dfn id=DocumentXDoctype><code>DocumentXDoctype</code></dfn> {
316      DocumentType <a href="#createDocumentTypeDefinition">createDocumentTypeDefinition</a>
317        (in DOMString <a href="#createDocumentTypeDefinition-name"><var>name</var></a>)
318        raises (DOMException);
319      <a href="#ElementTypeDefinition">ElementTypeDefinition</a> <a href="#createElementTypeDefinition">createElementTypeDefinition</a>
320        (in DOMString <a href="#createElementTypeDefinition-name"><var>name</var></a>)
321        raises (DOMException);
322      <a href="#AttributeDefinition">AttributeDefinition</a> <a href="#createAttributeDefinition">createAttributeDefinition</a>
323        (in DOMString <a href="#createAttributeDefinition-name"><var>name</var></a>)
324        raises (DOMException);
325      <a href="#Entity">Entity</a> <a href="#createGeneralEntity">createGeneralEntityDefinition</a>
326        (in DOMString <a href="#createGeneralEntity-name"><var>name</var></a>)
327        raises (DOMException);
328      <a href="#Notation">Notation</a> <a href="#createNotation">createNotation</a>
329        (in DOMString <a href="#createNotation-name"><var>name</var></a>)
330        raises (DOMException);
331    }</code></pre>
332    
333    <div class=ed>@@ cast definition</div>
334    
335    <dl>
336    <dt><dfn id=createDocumentTypeDefinition class=dom-method><code>createDocumentTypeDefinition</code></dfn>,
337    method</dt>
338      <dd>
339        <p>This method creates a <code>DocumentType</code> node with the specified
340        name, belonging to the document.</p>
341        <p>The <dfn id=createDocumentTypeDefinition-name class=dom-param><var>name</var></dfn>
342        parameter is the name of the document type.</p>
343    
344        <p>When invoked, the method <em class=rfc2119>MUST</em> create and
345        return a <code>DocumentType</code> node with the following attributes:</p>
346        <dl>
347        <dt><code>attributes</code>, <code>parentNode</code></dt>
348          <dd><code>null</code>.</dd>
349        <dt><code>elementTypes</code>, <code>generalEntities</code>, and
350        <code>notations</code></dt>
351          <dd>Empty <code>NamedNodeMap</code> objects.</dd>
352        <dt><code>entities</code></dt>
353          <dd>The same value as the <code>generalEntities</code> attribute.</dd>
354        <dt><code>childNodes</code></dt>
355          <dd>An empty <code>NodeList</code> object.</dd>
356        <dt><code>internalSubset</code>, <code>publicId</code>, and
357        <code>systemId</code></dt>
358          <dd>Empty strings.</dd>
359        <dt><code>manakaiReadOnly</code> <span class=ed>[manakai]</span></dt>
360          <dd><code>false</code>.</dd>
361        <dt><code>nodeName</code></dt>
362          <dd><a href="#createDocumentTypeDefinition-name"><var>name</var></a>.</dd>
363        <dt><code>ownerDocument</code></dt>
364          <dd>The <code>Document</code> over which the method is invoked.</dd>
365        </dl>
366        <p>In addition, the method <em class=rfc2119>MUST</em> be marked as
367        containing five general entity declarations: <code>amp</code>,
368        <code>lt</code>, <code>gt</code>, <code>quot</code>, and
369        <code>apos</code>.</p>
370      </dd>
371    <dt><dfn id=createElementTypeDefinition class=dom-method><code>createElementTypeDefinition</code></dfn>,
372    method</dt>
373      <dd>
374        <p>This method creates a <code>ElementTypeDefinition</code> node with the
375        specified name, belonging to the document.</p>
376        <p>The <dfn id=createElementTypeDefinition-name class=dom-param><var>name</var></dfn>
377        parameter is the name of the element type defined by the element
378        type definition.</p>
379    
380        <p>When invoked, the method <em class=rfc2119>MUST</em> create and
381        return an
382        <a href="#ElementTypeDefinition"><code>ElementTypeDefinition</code></a>
383        node with the following attributes:</p>
384        <dl>
385        <dt><a href="#attributeDefinitions"><code>attributeDefinitions</code></a></dt>
386          <dd>An empty <code>NamedNodeMap</code> object.</dd>
387        <dt><code>attributes</code>, <code>parentNode</code></dt>
388          <dd><code>null</code>.</dd>
389        <dt><code>childNodes</code></dt>
390          <dd>An empty <code>NodeList</code> object.</dd>
391        <dt><code>manakaiReadOnly</code> <span class=ed>[manakai]</span></dt>
392          <dd><code>false</code>.</dd>
393        <dt><code>nodeName</code></dt>
394          <dd><a href="#createElementTypeDefinition-name"><var>name</var></a>.</dd>
395        <dt><code>ownerDocument</code></dt>
396          <dd>The <code>Document</code> node over which the method is invoked.</dd>
397        <dt><a href="#ownerDocumentTypeDefinition"><code>ownerDocumentTypeDefinition</code></a></dt>
398          <dd><code>null</code>.</dd>
399        <dt class=ed>@@ Ensure all attributes are defined</dt>
400        </dl>
401      </dd>
402    <dt><dfn id=createAttributeDefinition class=dom-method><code>createAttributeDefinition</code></dfn>,
403    method</dt>
404      <dd>
405        <p>This method creates a <code>AttributeDefinition</code> node with the
406        specified name, belonging to the document.</p>
407        <p>The <dfn id=createAttributeDefinition-name class=dom-param><var>name</var></dfn>
408        parameter is the name of the attribute defined by the attribute
409        definition.</p>
410    
411        <p>When invoked, the method <em class=rfc2119>MUST</em> create and
412        return an
413        <a href="#AttributeDefinition"><code>AttributeDefinition</code></a>
414        node with the following attributes:</p>
415        <dl>
416        <dt><code>allowedTokens</code></dt>
417          <dd>An empty <code>DOMStringList</code> object.</dd>
418        <dt><code>attributes</code>,
419        <a href="#ownerElementTypeDefinition"><code>ownerElementTypeDefinition</code></a>,
420        and <code>parentNode</code></dt>
421          <dd><code>null</code>.</dd>
422        <dt><code>childNodes</code></dt>
423          <dd>An empty <code>NodeList</code> object.</dd>
424        <dt><code>declaredType</code></dt>
425          <dd><a href="#NO_TYPE_ATTR"><code>NO_TYPE_ATTR</code></a>.</dd>
426        <dt><code>defaultType</code></dt>
427          <dd><a href="#UNKNOWN_DEFAULT"><code>UNKNOWN_DEFAULT</code></a>.</dd>
428        <dt><code>manakaiReadOnly</code> <span class=ed>[manakai]</span></dt>
429          <dd><code>false</code>.</dd>
430        <dt><code>nodeName</code></dt>
431          <dd><a href="#createAttributeDefinition-name"><var>name</var></a>.</dd>
432        <dt><code>ownerDocument</code></dt>
433          <dd>The <code>Document</code> node over which the method is invoked.</dd>
434        <dt class=ed>@@ Ensure all attributes are defined</dt>
435        </dl>
436    
437        <div class=ed>
438        <p>@@ Should we keep these statements?:
439    However, if the &lt;cfg::cfg|xml-id> configuration
440    parameter is set to <code>true</code> and the <var>name</var>
441    is <code>xml:id</code>, then the [CODE(DOMa)@en[[[declaredType]]]]
442    attribute is set to <code>ID_ATTR</code>.
443    [CODE(DOMa)@en[[[defaultType]]]]?</p>
444        </div>
445      </dd>
446    <dt><dfn id=createGeneralEntity class=dom-method><code>createGeneralEntity</code></dfn>,
447    method</dt>
448      <dd>
449        <p>This method creates a <a href="#Entity"><code>Entity</code></a> node
450        with the specified name, which represents a general entity, belonging to
451        the document.</p>
452        <p>The <dfn id=createGeneralEntity-name class=dom-param><var>name</var></dfn>
453        parameter is the name of the general entity.</p>
454    
455        <p>When invoked, the method <em class=rfc2119>MUST</em> create and return
456        an <a href="#Entity"><code>Entity</code></a> node with the following
457        attributes:</p>
458        <dl>
459        <dt><code>attributes</code>, <code>notationName</code>,
460        <a href="#ownerDocumentTypeDefinition"><code>ownerDocumentTypeDefinition</code></a>,
461        and <code>parentNode</code></dt>
462          <dd><code>null</code>.</dd>
463        <dt><code>childNodes</code></dt>
464          <dd>An empty <code>NodeList</code> object.</dd>
465        <dt><code>manakaiDeclarationBaseURI</code>,
466        <code>manakaiEntityBaseURI</code>, and
467        <code>manakaiEntityURI</code> <span class=ed>@@ ref</span></dt>
468          <dd>No explicit value is set.</dd>
469        <dt><code>manakaiHasReplacementTree</code> and
470        <code>manakaiReadOnly</code> <span class=ed>[manakai]</span></dt>
471          <dd><code>false</code>.</dd>
472        <dt><code>nodeName</code></dt>
473          <dd><a href="#createGeneralEntity-name"><var>name</var></a>.</dd>
474          <dd>
475            <div class="note memo">
476              <p>It is not an error for
477              <a href="#createGeneralEntity-name"><var>name</var></a> matching
478              to the name of one of predefined general parsed entities in
479              <abbr>XML</abbr> or <abbr>HTML</abbr>.  For example,
480              <a href="#createGeneralEntity-name"><var>name</var></a> might be
481              <code>amp</code>, resulting in an
482              <a href="#Entity"><code>Entity</code></a> node
483              with its <code>nodeName</code> attribute set to <code>amp</code>.</p>
484            </div>
485          </dd>
486        <dt><code>ownerDocument</code></dt>
487          <dd>The <code>Document</code> node over which the method is invoked.</dd>
488        <dt><code>publicId</code>, and <code>systemId</code></dt>
489          <dd><code>null</code>.</dd>
490          <dd class=ed>@@ publicId and systemId should be empty string?</dd>
491        <dt class=ed>@@ Ensure all attributes are defined</dd>
492        </dl>
493      </dd>
494    <dt><dfn id=createNotation class=dom-method><code>createNotation</code></dfn>,
495    method</dt>
496      <dd>
497        <p>This method creates a <code>Notation</code> node with the
498        specified name, belonging to the document.</p>
499        <p>The <dfn id=createNotation-name class=dom-param><var>name</var></dfn>
500        parameter is the name of the notation.</p>
501    
502        <p>When invoked, the method <em class=rfc2119>MUST</em> create and return
503        a <code>Notation</code> node with the following attributes:</p>
504        <dl>
505        <dt><code>attributes</code>,
506        <a href="#ownerDocumentTypeDefinition"><code>ownerDocumentTypeDefinition</code></a>,
507        and <code>parentNode</code></dt>
508          <dd><code>null</code>.</dd>
509        <dt><code>childNodes</code></dt>
510          <dd>An empty <code>NodeList</code> object.</dd>
511        <dt><code>manakaiDeclarationBaseURI</code></dt>
512          <dd>No explicit value is set.</dd>
513        <dt><code>manakaiReadOnly</code> <span class=ed>[manakai]</span></dt>
514          <dd><code>false</code>.</dd>
515        <dt><code>nodeName</code></dt>
516          <dd><a href="#createNotation-name"><var>name</var></a>.</dd>
517        <dt><code>ownerDocument</code></dt>
518          <dd>The <code>Document</code> node over which the method is invoked.</dd>
519        <dt><code>publicId</code> and <code>systemId</code></dt>
520          <dd><code>null</code>.</dd>
521          <dd class=ed>@@ publicId and systemId should be empty string?</dd>
522        <dt class=ed>@@ Ensure all attributes are defined</dt>
523        </dl>
524      </dd>
525    </dl>
526    
527    <p>These methods <em class=rfc2119>MUST</em> raise an
528    <code>INVALID_CHARACTER_ERR</code> exception <span class=ed>@@ ref</span>
529    if <var>name</var> is <em>not</em> a legal <code>Name</code> according to
530    the <abbr>XML</abbr> version in use, as specified in the
531    <code>xmlVersion</code> attribute of the <code>Document</code> node.</p>
532    
533    <div class="note memo">
534    <p>Non$B!>(B<abbr>XML</abbr> case is intentionally left unspecified for now,
535    since <abbr>DOM3</abbr> specification <span class=ed>@@ ref</span> does not
536    define it for <code>Document</code> methods.</p>
537    
538    <p><var>name</var> does not have to be a namespace qualified name.</p>
539    </div>
540    
541    </div>
542    
543    
544    <div class=section id=section-documenttype>
545    <h3>Modifications to the <code id=DocumentType>DocumentType</code>
546    Interface</h3>
547    
548    <p>A <a href="#DocumentType"><code>DocumentType</code></a> interface
549    <em class=rfc2119>MAY</em> contain zero or more
550    <a href="#ProcessingInstruction"><code>ProcessingInstruction</code></a>
551    nodes in the <code>NodeList</code> object contained in the
552    <code>childNodes</code> attribute of the
553    <a href="#DocumentType"><code>DocumentType</code></a> node.</p>
554    
555    <p>If the <a href="#DocumentType"><code>DocumentType</code></a> node is created
556    during the process to create a <abbr>DOM</abbr> from an <abbr>XML</abbr>
557    document, the <code>NodeList</code> object in the <code>childNodes</code>
558    object <em class=rfc2119>MUST</em> contains the
559    <a href="#ProcessingInstruction"><code>ProcessingInstruction</code></a>
560    nodes representing the processing instructions in the document type
561    definition of the document processed <span class=ed>@@ ref</span> by
562    the <abbr>XML</abbr> processor.  If the
563    <a href="#DocumentType"><code>DocumentType</code></a> node is marked
564    as read$B!>(Bonly, then all the child nodes <em class=rfc2119>MUST</em>
565    also be marked as read$B!>(Bonly.</p>
566    
567    <p>If a <a href="#DocumentType"><code>DocumentType</code></a> node is created
568    from a document type declaration information item <span class=ed>@@ ref</span>,
569    the <code>NodeList</code> object in the <code>childNodes</code> attribute
570    of the node <em class=rfc2119>MUST</em> contain the
571    <a href="#ProcessingInstruction"><code>ProcessingInstruction</code></a> nodes
572    created from the processing instruction information items in the list in the
573    [children] property of the document type declaration item in the same
574    order.</p>
575    
576    <p>If a <a href="#DocumentType"><code>DocumentType</code></a> node is mapped to
577    a document type declaration information item, the list in the [children]
578    property <em class=rfc2119>MUST</em> contain the processng instruction
579    information items created from the
580    <a href="#ProcessingInstruction"><code>ProcessingInstruction</code></a> nodes
581    in the <code>NodeList</code> object in the <code>childNodes</code> attribute
582    of the <a href="#DocumentType"><code>DocumentType</code></a> node.</p>
583    
584    <p>The implementation of the
585    <a href="#DocumentType"><code>DocumentType</code></a> interface
586    <em class=rfc2119>MUST</em> be modified as following:</p>
587    <pre class=idl><code>// Modifications to the DocumentType interface
588      attribute DOMString <a href="#publicId">publicId</a>;
589      attribute DOMString <a href="#systemId">systemId</a>;
590    
591      attribute DOMString <a href="#internalSubset">internalSubset</a>;
592    </code></pre>
593    
594    <p>The <code id=publicId>publicId</code> attribute and the
595    <code id=systemId>systemId</code> attribute of
596    <a href="#DocumentType"><code>DocumentType</code></a>,
597    <a href="#Entity"><code>Entity</code></a>, and
598    <a href="#Notation"><code>Notation</code></a> interfaces are no longer
599    read$B!>(Bonly.</p>
600    
601    <p>On setting, the attribute <em class=rfc2119>MUST</em> raise a
602    <code>NO_MODIFICATION_ALLOWED_ERR</code> <span class=ed>@@ ref</span>
603    exception if the node is read$B!>(Bonly <span class=ed>@@ ref</span>.  
604    Otherwise, it <em class=rfc2119>MUST</em> set the specified value as the value
605    associated to the attribute.  No normalization, relative reference resolution,
606    or lexical validation is performed. <span class=ed>@@ If the new
607    value is <code>null</code>, ...</span></p>
608    
609    <div class="note memo">
610    <p>Setting an invalid identifier might make the node unserializable.
611    Setting a public identifier while leaveing system identifier unspecified
612    would also make the <a href="#DocumentType"><code>DocumentType</code></a>
613    or <a href="#Entity"><code>Entity</code></a> node unserializable.</p>
614    </div>
615    
616    <div class=ed>
617    <p>ISSUE: In HTML5, Firefox 1.5, and Opera 9, not specifying public or system identifier results in empty strings.</p>
618    </div>
619    
620    <p>The <code id=internalSubset>internalSubset</code> attribute of the
621    <a href="#DocumentType"><code>DocumentType</code></a> interface is no longer
622    read$B!>(Bonly.</p>
623    
624    <p>On setting, the attribute <em class=rfc2119>MUST</em> raise a
625    <code>NO_MODIFICATION_ALLOWED_ERR</code> <span class=ed>@@ ref</span>
626    exception if the node is read$B!>(Bonly <span class=ed>@@ ref</span>.  
627    Otherwise, it <em class=rfc2119>MUST</em> set the specified value as the value
628    associated to the attribute.  No normalization, or lexical validation is
629    performed. <span class=ed>@@ If the new value is <code>null</code>,
630    ...</span></p>
631    
632    </div>
633    
634    <div class=section id=section-documenttypedefinition>
635    <h3>The <code>DocumentTypeDefinition</code> Interface</h3>
636    
637    <div class="note memo">
638    <p>This interface is a separated interface from the
639    <a href="#DocumentType"><code>DocumentType</code></a>, not a set of extensions
640    to the <a href="#DocumentType"><code>DocumentType</code></a>,
641    for the historical reason.</p>
642    </div>
643    
644    <p>The
645    <a href="#DocumentTypeDefinition"><code>DocumentTypeDefinition</code></a>
646    interface <em class=rfc2119>MUST</em> be implemented as following:</p>
647    <pre class=idl><code>interface <dfn id=DocumentTypeDefinition><code>DocumentTypeDefinition</code></dfn> {
648      readonly attribute NamedNodeMap <a href="#elementTypes">elementTypes</a>;
649      readonly attribute NamedNodeMap <a href="#generalEntities">generalEntities</a>;
650      readonly attribute NamedNodeMap <a href="#notations">notations</a>;
651    
652      <a href="#ElementTypeDefinition">ElementTypeDefinition</a> <a href="#getElementTypeDefinitionNode">getElementTypeDefinitionNode</a>
653        (in DOMString <a href="#getElementTypeDefinitionNode-name"><var>name</var></a>);
654      <a href="#Entity">Entity</a> <a href="#getGeneralEntityNode">getGeneralEntityNode</a>
655        (in DOMString <a href="#getGeneralEntityNode-name"><var>name</var></a>);
656      <a href="#Notation">Notation</a> <a href="#getNotationNode">getNotationNode</a>
657        (in DOMString <a href="#getNotationNode-name"><var>name</var></a>);
658    
659      void <a href="#setElementTypeDefinitionNode">setElementTypeDefinitionNode</a>
660        (in DOMString <a href="#setElementTypeDefinitionNode-node"><var>node</var></a>)
661        raises (DOMException);
662      void <a href="#setGeneralEntityNode">setGeneralEntityNode</a>
663        (in DOMString <a href="#setGeneralEntityNode-node"><var>node</var></a>)
664        raises (DOMException);
665      void <a href="#setNotationNode">setNotationNode</a>
666        (in DOMString <a href="#setNotationNode-node"><var>node</var></a>)
667        raises (DOMException);
668    }</code></pre>
669    
670    <pre class=ed>
671    [1] In an implementation that supports the
672    [CODE(URI)@en[[[http://suika.fam.cx/www/2006/feature/XDoctype]]]]
673    feature, a [CODE(DOMi)@en[[[DocumentType]]]] node
674    must implement the [CODE(DOMi)@en[[[DocumentTypeDefinition]]]]
675    interface.  See [[DOM XML Document Type Definition]>>3] for
676    details.
677    </pre>
678    
679    <dl>
680    <dt><dfn id=elementTypes class=dom-attr><code>elementTypes</code></dfn> of
681    type <code>NamedNodeMap</code>, read$B!>(Bonly</dt>
682      <dd><p>A live <code>NamedNodeMap</code> object that contains all the element
683      type definitions belonging to the <code>DocumentType</code> node.</p>
684    
685      <p>On getting, the attribute <em class=rfc2119>MUST</em> return the
686      <code>NamedNodeMap</code> object that contains all the
687      <a href="#ElementTypeDefinition"><code>ElementTypeDefinition</code></a>
688      nodes belonging to the <code>DocumentType</code> node.  The
689      <code>NamedNodeMap</code> object <em class=rfc2119>MUST</em> be read$B!>(Bonly
690      if and only if the node is read$B!>(Bonly.  The <code>NamedNodeMap</code>
691      object <em class=rfc2119>MUST</em> be live and the same object
692      <em class=rfc2119>MUST</em> be returned for any invocation.</p>
693    
694      <p>If the <code>DocumentType</code> node is created during the process
695      to create a <abbr>DOM</abbr> from an <abbr>XML</abbr> document, the following
696      requirements are applied:  The <code>NamedNodeMap</code> object in the
697      <a href="#elementTypes"><code>elementType</code></a> attribute
698      <em class=rfc2119>MUST</em> be so transformed that the object contains
699      the <code>ElementTypeDefinition</code> nodes for the element types
700      whose name is presented as the <code>Name</code> of the element type or
701      attribute definition list declarations processed by the <abbr>XML</abbr>
702      processor.  If there is more than one element type declarations for an
703      element type, then the declarations other than the first one
704      <em class=rfc2119>MUST</em> be ignored for the purpose of constructing the
705      <code>NamedNodeMap</code> object.</p></dd>
706    <dt><dfn id=generalEntities class=dom-attr><code>generalEntities</code></dfn>
707    of type <code>NamedNodeMap</code>, read$B!>(Bonly</dt>
708      <dd><p>A live <code>NamedNodeMap</code> object that contains all the general
709      entities belonging to the <code>DocumentType</code> node.</p>
710      
711      <p>On getting, the attribute <em class=rfc2119>MUST</em> return the
712      same value as the <code>entities</code> attribute (defined in the
713      <code>DocumentType</code> interface) of the same node.</p>
714    
715      <div class="note memo">
716        <p>This attribute is part of the interface for historical reason.</p>
717      </div></dd>
718    <!--
719    All entities declared in the document type definition
720    contained in or referenced from the document entity
721    might not be exposed through this collection, depending
722    on the information provided by the XML processor for
723    the DOM implementation.  In particular, it might not
724    contain any entity if entity references are expanded
725    at the parse time.  An implementation [['''MUST NOT''']]
726    expose an [CODE(DOMi)@en[[[Entity]]]] node whose [CODE(DOMa)@en[[[nodeName]]]]
727    is equal to the name of one of five predefined general entities in
728    XML through the collection as the result of parsing of an XML
729    document that has no error.  Duplicate entity declarations are also discarded.
730    
731    The attribute [['''MUST''']] return the [CODE(DOMi)@en[[[NamedNodeMap]]]]
732    object that contains all the [CODE(DOMi)@en[[[Entity]]]] nodes
733    representing general entities belong to the node.  The returned
734    [CODE(DOMi)@en[[[NamedNodeMap]]]] object [['''MUST''']] be read-only if and only if
735    the node is read-only. Note that the [CODE(DOMi)@en[[[NamedNodeMap]]]] object is live
736    and therefore any change of read-only flag on the node is immediately
737    reflected by that of the object.
738    -->
739    <dt><dfn id=notations class=dom-attr><code>notations</code></dfn> of type
740    <code>notations</code>, read$B!>(Bonly</code>
741      <dd><p>A live <code>NamedNodeMap</code> object that contains all the
742      notations belonging to the <code>DocumentType</code> node.</p>
743      
744      <p>On getting, the attribute <em class=rfc2119>MUST</em> return the
745      same value as the <code>notations</code> attribute (defined in the
746      <code>DocumentType</code> interface) of the same node.</p>
747    
748      <div class="note memo">
749        <p>This attribute is part of the interface for historical reason.</p>
750        <p>Implementations are not required to implement the
751        <code>notations</code> attribute twice (for <code>DocumentType</code>
752        and <code>DocumentTypeDefinition</code> interfaces); they share exactly
753        same definition.</p>
754      </div></dd>
755    <!--
756    If the [CODE(DOMi)@en[[[DocumentTypeDefinition]]]] node is
757    created from an XML document, duplicate notation declarations, if any, in DTD
758    [['''MUST NOT''']] result in a node in the [CODE(DOMi)@en[[[NamedNodeMap]]]]
759    object and only the first declaration [['''MUST''']] be
760    made available as a [CODE(DOMi)@en[[[Notation]]]] node.
761    
762    ;; This definition is based on one for the
763    [CODE(DOMa)@en[[[notations]]]] attribute of the
764    [CODE(DOMi)@en[[[DocumentType]]]] interface in DOM XML module.
765    Since duplication is violation to the Validity Constraint,
766    XML parsers might vary on how notations are notified to
767    the application.  In particular, [CODE(InfoProp)@en[[[notations]]]]
768    property of the document information item in XML Information Set
769    is so defined that in case ''any'' notation is declared for
770    multiple times then the property has no value.
771    
772    The attribute [['''MUST''']] return the [CODE(DOMi)@en[[[NamedNodeMap]]]]
773    object that contains all the [CODE(DOMi)@en[[[Notation]]]] nodes
774    representing notations belong to the node.  The returned
775    [CODE(DOMi)@en[[[NamedNodeMap]]]] object [['''MUST''']] be read-only if and only if
776    the node is read-only. Note that the [CODE(DOMi)@en[[[NamedNodeMap]]]] object is live
777    and therefore any change of read-only flag on the node is immediately
778    reflected by that of the object.
779    -->
780    
781    <dt class=ed>@@ other members...
782    </dl>
783    
784    <div class=ed>
785    <p>A future version of this interface might define the
786    <code>parameterEntities</code> and getter/setter for parameter entities.
787    </div>
788    
789    </div>
790    
791    <div class=section id=section-elementtypedefinition>
792    <h3>The <code>ElementTypeDefinition</code> Interface</h3>
793    
794    <p>The nodes of type
795    <a href="#ELEMENT_TYPE_DEFINITION_NODE"><code>ELEMENT_TYPE_DEFINITION_NODE</code></a>
796    represents an element type definition.  Such a node implements the
797    <a href="#ElementTypeDefinition"><code>ElementTypeDefinition</code></a>
798    interface, which extends the <a href="#Node"><code>Node</code></a>
799    interface.</p>
800    
801    <p>An element type definition represents a definition of the element type.
802    It is corresponding to the element type declaration in <abbr>DTD</abbr>.
803    However, an
804    <a href="#ElementTypeDefinition"><code>ElementTypeDefinition</code></a> node
805    does not represent the element type definition in <abbr>DTD</abbr> itself.  
806    Even if there are more than one element type declarations for an element type
807    in <abbr>DTD</abbr>, the result <abbr>DOM</abbr> will contain only an
808    <a href="#ElementTypeDefinition"><code>ElementTypeDefinition</code></a>
809    node for that element type.  In addition, if there are attribute definition
810    declarations for an element type, even when there is no element type
811    declaration for that element type, the <abbr>DOM</abbr> will contain an
812    <a href="#ElementTypeDefinition"><code>ElementTypeDefinition</code></a>
813    node for that element type.</p>
814    
815    <p>The <a href="#ElementTypeDefinition"><code>ElementTypeDefinition</code></a>
816    interface <em class=rfc2119>MUST</em> be implemented as following:</p>
817    <pre class=idl><code>interface <dfn id=ElementTypeDefinition><code>ElementTypeDefinition</code></dfn> : <a href="#Node">Node</a> {
818      readonly attribute <a href="#ownerDocumentTypeDefinition">ownerDocumentTypeDefinition</a>;
819    
820      <span class=ed>@@ more</span>
821    }</code></pre>
822    
823    <pre class=ed>
824    [DFN@en[[CODE(DOMa)@en[[[ownerDocumentTypeDefinition]]]] attribute]]
825    of the [CODE(DOMi)@en[[[ElementTypeDefinition]]]]
826    interface is defined in [[manakai//DOM Extensions]>>50].</pre>
827    </div>
828    
829    <div class=section id=section-attributedefinition>
830    <h3>The <code>AttributeDefinition</code> Interface</h3>
831    
832    <p>The nodes of type
833    <a href="#ATTRIBUTE_DEFINITION_NODE"><code>ATTRIBUTE_DEFINITION_NODE</code></a>
834    represents an attribute definition.  Such a node implements the
835    <a href="#AttributeDefinition"><code>AttributeDefinition</code></a> interface,
836    which extends the <a href="#Node"><code>Node</code></a> interface.</p>
837    
838    <p>An attribute definition represents a definition of the attribute
839    associated to an element type.  It is corresponding to the attribute definition
840    in the attribute list declaration in <abbr>DTD</abbr>.  However, an
841    <a href="#AttributeDefinition"><code>AttributeDefinition</code></a> node does
842    not represent the attribute definition in <abbr>DTD</abbr> itself.  Even if
843    there are more than one attribute definitions for an attribute of an element
844    type in <abbr>DTD</abbr>, the result <abbr>DOM</abbr> will contain only an
845    <a href="#AttributeDefinition"><code>AttributeDefinition</code></a> node for
846    that attribute.</p>
847    
848    <p>The <a href="#AttributeDefinition"><code>AttributeDefinition</code></a>
849    interface <em class=rfc2119>MUST</em> be implemented as following:</p>
850    <pre class=idl><code>interface <dfn id=AttributeDefinition><code>AttributeDefinition</code></dfn> : <a href="#Node">Node</a> {
851      <span class=comment>// <a href="#DeclaredValueType">DeclaredValueType</a></span>
852      const unsigned short <a href="#NO_TYPE_ATTR">NO_TYPE_ATTR</a> = 0;
853      const unsigned short <a href="#CDATA_ATTR">CDATA_ATTR</a> = 1;
854      const unsigned short <a href="#ID_ATTR">ID_ATTR</a> = 2;
855      const unsigned short <a href="#IDREF_ATTR">IDREF_ATTR</a> = 3;
856      const unsigned short <a href="#IDREFS_ATTR">IDREFS_ATTR</a> = 4;
857      const unsigned short <a href="#ENTITY_ATTR">ENTITY_ATTR</a> = 5;
858      const unsigned short <a href="#ENTITIES_ATTR">ENTITIES_ATTR</a> = 6;
859      const unsigned short <a href="#NMTOKEN_ATTR">NMTOKEN_ATTR</a> = 7;
860      const unsigned short <a href="#NMTOKENS_ATTR">NMTOKENS_ATTR</a> = 8;
861      const unsigned short <a href="#NOTATION_ATTR">NOTATION_ATTR</a> = 9;
862      const unsigned short <a href="#ENUMERATION_ATTR">ENUMERATION_ATTR</a> = 10;
863      const unsigned short <a href="#UNKNOWN_ATTR">UNKNOWN_ATTR</a> = 11;
864    
865      <span class=comment>// <a href="#DefaultValueType">DefaultValueType</a></span>
866      const unsigned short <a href="#UNKNOWN_DEFAULT">UNKNOWN_DEFAULT</a> = 0;
867      const unsigned short <a href="#FIXED_DEFAULT">FIXED_DEFAULT</a> = 1;
868      const unsigned short <a href="#REQUIRED_DEFAULT">REQUIRED_DEFAULT</a> = 2;
869      const unsigned short <a href="#IMPLIED_DEFAULT">IMPLIED_DEFAULT</a> = 3;
870      const unsigned short <a href="#EXPLICIT_DEFAULT">EXPLICIT_DEFAULT</a> = 4;
871      
872      readonly attribute <a href="#ElementTypeDefinition">ElementTypeDefinition</a> <a href="#ownerElementTypeDefinition">ownerElementTypeDefinition</a>;
873    
874      readonly attribute unsigned short <a href="#declaredType">declaredType</a>;
875      readonly attribute unsigned short <a href="#defaultType">defaultType</a>;
876    
877      <span class=ed>...</span>
878    }</code></pre>
879    
880    <dl>
881    <dt><dfn id=ownerElementTypeDefinition class=dom-attr><code>ownerElementTypeDefinition</code></dfn>
882    of type
883    <a href="#ElementTypeDefinition"><code>ElementTypeDefinition</code></a>,
884    read$B!>(Bonly</dt>
885      <dd><p>The
886      <a href="#ElementTypeDefinition"><code>ElementTypeDefinition</code></a> to
887      which the <a href="#AttributeDefinition"><code>AttributeDefinition</code></a>
888      node belongs.</p>
889    
890      <p>On getting, the attribute <em class=rfc2119>MUST</em> return an
891      <a href="#ElementTypeDefinition"><code>ElementTypeDefinition</code></a> node.
892      It <em class=rfc2119>MUST</em> be such a node that whose
893      <a href="#attributeDefinitons"><code>attributeDefinitions</code></a>
894      attribute contains the <code>NamedNodeMap</code> object that contains
895      the <a href="#AttributeDefinition"><code>AttributeDefinition</code></a>
896      node.  If there is no such an
897      <a href="#ElementTypeDefinition"><code>ElementTypeDefinition</code></a> node,
898      then <code>null</code> <em class=rfc2119>MUST</em> be returned.</p>
899    <dt><dfn id=declaredType class=dom-attr><code>declaredType</code></dfn> of type
900    <code>unsigned short</code></dt>
901      <dd><p>The declared type <span class=ed>@@ ref</span> of the attribute.
902      It is expected that this attribute contains a value from the definition group
903      <a href="#DeclaredValueType"><code>DeclaredValueType</code></a>.</p>
904    
905      <p>On getting, the attribute <em class=rfc2119>MUST</em> return the
906      value associated to this attribute.</p>
907    
908      <p>On setting, the attribute <em class=rfc2119>MUST</em> raise a
909      <code>NO_MODIFICATION_ALLOWED_ERR</code> <span class=ed>@@ ref</span>
910      exception if the
911      <a href="#AttributeDefinition"><code>AttributeDefinition</code></a> node
912      is read$B!>(Bonly <span class=ed>@@ ref</span>.  Otherwise, it
913      <em class=rfc2119>MUST</em> set the specified value as the value
914      associated to this attribute.</p>
915    
916      <p>If the <code>AttributeDefinition</code> node is created during the process
917      to create a <abbr>DOM</abbr> from an <abbr>XML</abbr> document, an
918      appropriate value from the
919      <a href="#DeclaredValueType"><code>DeclaredValueType</code></a> constant
920      group <em class=rfc2119>MUST</em> be set to the attribute.</p>
921    
922      <!-- DeclaredValueType -->
923    <p>The definition group
924    <dfn id=DeclaredValueType><code>DeclaredValueType</code></dfn> contains
925    integers indicating the declared type of attributes.  The definition
926    group contains the following constants:</p>
927    
928    <table>
929    <thead>
930    <tr><th scope=col>Name<th scope=col>Value<th scope=col>Description</tr>
931    </thead>
932    <tbody>
933    <tr>
934    <th scope=row><dfn id=NO_TYPE_ATTR class=dom-const><code>NO_TYPE_ATTR</code>
935    <td><code>0</code><td>No value <span class=ed>[INFOSET]</span>.</tr>
936    <tr>
937    <th scope=row><dfn id=CDATA_ATTR class=dom-const><code>CDATA_ATTR</code>
938    <td><code>1</code><td><code>CDATA</code> <span class=ed>[XML]</span>.</tr>
939    <tr>
940    <th scope=row><dfn id=ID_ATTR class=dom-const><code>ID_ATTR</code>
941    <td><code>2</code><td><code>ID</code> <span class=ed>[XML]</span>.</tr>
942    <tr>
943    <th scope=row><dfn id=IDREF_ATTR class=dom-const><code>IDREF_ATTR</code>
944    <td><code>3</code><td><code>IDREF</code> <span class=ed>[XML]</span>.</tr>
945    <tr>
946    <th scope=row><dfn id=IDREFS_ATTR class=dom-const><code>IDREFS_ATTR</code>
947    <td><code>4</code><td><code>IDREFS</code> <span class=ed>[XML]</span>.</tr>
948    <tr>
949    <th scope=row><dfn id=ENTITY_ATTR class=dom-const><code>ENTITY_ATTR</code>
950    <td><code>5</code><td><code>ENTITY</code> <span class=ed>[XML]</span>.</tr>
951    <tr>
952    <th scope=row><dfn id=ENTITIES_ATTR class=dom-const><code>ENTITIES_ATTR</code>
953    <td><code>6</code><td><code>ENTITIES</code> <span class=ed>[XML]</span>.</tr>
954    <tr>
955    <th scope=row><dfn id=NMTOKEN_ATTR class=dom-const><code>NMTOKEN_ATTR</code>
956    <td><code>7</code><td><code>NMTOKEN</code> <span class=ed>[XML]</span>.</tr>
957    <tr>
958    <th scope=row><dfn id=NMTOKENS_ATTR class=dom-const><code>NMTOKENS_ATTR</code>
959    <td><code>8</code><td><code>NMTOKENS</code> <span class=ed>[XML]</span>.</tr>
960    <tr>
961    <th scope=row><dfn id=NOTATION_ATTR class=dom-const><code>NOTATION_ATTR</code>
962    <td><code>9</code><td><code>NOTATION</code> <span class=ed>[XML]</span>.</tr>
963    <tr>
964    <th scope=row><dfn id=ENUMERATION_ATTR class=dom-const><code>ENUMERATION_ATTR</code>
965    <td><code>10</code><td>Enumeration <span class=ed>[XML]</span>.</tr>
966    <tr>
967    <th scope=row><dfn id=UNKNOWN_ATTR class=dom-const><code>UNKNOWN_ATTR</code>
968    <td><code>11</code><td>Unknown, because no declaration for the attribute
969    has been read but the [all declaration processed] property
970    <span class=ed>[INFOSET]</span> would be false.</tr>
971    </tbody>
972    </table>
973    
974    <p>If no attribute type information is available, or if the source
975    of the information does not distinguish <q>no value</q> and <q>unknown</q>
976    <span class=ed>[INFOSET]</span>, then the value
977    <a href="#NO_TYPE_ATTR"><code>NO_TYPE_ATTR</code></a>
978    <em class=rfc2119>MUST</em> be used.</p>
979    
980    <div class="note memo">
981    <p>An <a href="#AttributeDefinition"><code>AttributeDefinition</code></a> node
982    created by the
983    <a href="#createAttributeDefinition"><code>createAttributeDefinition</code></a>
984    method has its <a href="#declaredType"><code>declaredType</code></a> attribute
985    set to <a href="#NO_TYPE_ATTR"><code>NO_TYPE_ATTR</code></a>.</p>
986    </div>
987    
988    <p>If the source of the information does not distinguish <q>no value</q>
989    and/or <q>unknown</q> <span class=ed>[INFOSET]</span> and
990    <code>CDATA</code> <span class=ed>[XML]</span>, then the value
991    <a href="#CDATA_ATTR"><code>CDATA_ATTR</code></a> <em class=rfc2119>MUST</em>
992    be used.</p>
993    
994    <p>In Perl binding <span class=ed>[PERLBINDING]</span>, the
995    <code>Attr</code> nodes <em class=rfc2119>MUST</em> implement the
996    <a href="#DeclaredValueType"><code>DeclaredValueType</code></a>
997    definition group.</p>
998    
999      </dd>
1000    <dt><dfn id=defaultType class=dom-attr><code>defaultType</code></dfn> of
1001    type <code>unsigned short</code></dt>
1002      <dd><p>The type of the default for the attribute.  It is expected that this
1003      attribute contains a value from the definition group
1004      <a href="#DefaultValueType"><code>DefaultValueType</code></a>.</p>
1005    
1006      <p>On getting, the attribute <em class=rfc2119>MUST</em> return
1007      the value associated to this attribute.</p>
1008    
1009      <p>On setting, the attribute <em class=rfc2119>MUST</em> raise a
1010      <code>NO_MODIFICATION_ALLOWED_ERR</code> <span class=ed>@@ ref</span>
1011      exception if the
1012      <a href="#AttributeDefinition"><code>AttributeDefinition</code></a> node
1013      is read$B!>(Bonly <span class=ed>@@ ref</span>.  Otherwise, it
1014      <em class=rfc2119>MUST</em> set the specified value as the value
1015      associated to this attribute.</p>
1016    
1017      <p>If the
1018      <a href="#AttributeDefinition"><code>AttributeDefinition</code></a> node is
1019      created during the process to create a <abbr>DOM</abbr> from an
1020      <abbr>XML</abbr> document, an appropriate value from the
1021      <a href="#DefaultValueType"><code>DefaultValueType</code></a> definition
1022      group <em class=rfc2119>MUST</em> be set to the attribute.</p>
1023    
1024      <!-- DefaultValueType -->
1025      <p>The definition group
1026      <dfn id=DefaultValueType><code>DefaultValueType</code></dfn>
1027      contains integers indicating the type of the default for the attribute.
1028      The definition group contains the following constans:</p>
1029    
1030      <table>
1031      <thead>
1032      <tr><th scope=col>Name<th scope=col>Value<th scope=col>Description</tr>
1033      </thead>
1034      <tbody>
1035      <tr>
1036      <th scope=row><dfn id=UNKNOWN_DEFAULT class=dom-const><code>UNKNOWN_DEFAULT</code></dfn>
1037      <td><code>0</code><td>Unknown.</tr>
1038      <tr>
1039      <th scope=row><dfn id=FIXED_DEFAULT class=dom-const><code>FIXED_DEFAULT</code></dfn>
1040      <td><code>1</code><td>Provided explicitly and fixed
1041      <span class=ed>@@ ref</span> to that value.</tr>
1042      <tr>
1043      <th scope=row><dfn id=REQUIRED_DEFAULT class=dom-const><code>REQUIRED_DEFAULT</code></dfn>
1044      <td><code>2</code><td>No default value and the attribute have to be
1045      explicitly specified.</tr>
1046      <tr>
1047      <th scope=row><dfn id=IMPLIED_DEFAULT class=dom-const><code>IMPLIED_DEFAULT</code></dfn>
1048      <td><code>3</code><td>Implied <span class=ed>@@ ref</span>.</tr>
1049      <tr>
1050      <th scope=row><dfn id=EXPLICIT_DEFAULT class=dom-const><code>EXPLICIT_DEFAULT</code></dfn>
1051      <td><code>4</code><td>Provided explicitly.</tr>
1052      </tbody>
1053      </table>
1054    
1055      <p>If the source of the default type does not distinguish
1056      implied and unknown default types, then the value
1057      <a href="#IMPLIED_DEFAULT"><code>IMPLIED_DEFAULT</code></a>
1058      <em class=rfc2119>MUST</em> be used.</p>
1059    
1060      <div class="note memo">
1061      <p>An <a href="#AttributeDefinition"><code>AttributeDefinition</code></a>
1062      node created by the
1063      <a href="#createAttributeDefinition"><code>createAttributeDefinition</code></a>
1064      method has its <a href="#defaultType"><code>defaultType</code></a>
1065      attribute set to
1066      <a href="#UNKNOWN_DEFAULT"><code>UNKNOWN_DEFAULT</code></a>.</p>
1067      </div></dd>
1068    </dl>
1069    
1070    </div>
1071    
1072  </div>  </div>
1073    
1074    
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