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<div class='noprint' style='text-align: right'>
<p style='font-family: monospace;font-size:small'>13 November,
2000</p>
</div>
<div class='div1'><a id="StyleSheets" name='StyleSheets'></a>
<h1 id='StyleSheets-h1' class='div1'>1. Document Object Model Style
Sheets</h1>
<dl>
<dt><i>Editors</i></dt>
<dd>Chris Wilson, Microsoft Corp.</dd>
<dd>Philippe Le Hégaret, W3C</dd>
<dd>Vidur Apparao, Netscape Communications Corp.</dd>
</dl>
<div class='noprint'>
<h2 id='table-of-contents'>Table of contents</h2>
<ul class='toc'>
<li class='tocline3'><a class='tocxref'
href='#StyleSheets-overview'>1.1. Introduction</a></li>
<li class='tocline3'><a class='tocxref'
href='#StyleSheets-fundamental'>1.2. Style Sheet Interfaces</a>
<ul class='toc'>
<li class='tocline4'><a
href='#StyleSheets-StyleSheet'>StyleSheet</a>, <a
href='#StyleSheets-StyleSheetList'>StyleSheetList</a>, <a
href='#StyleSheets-MediaList'>MediaList</a></li>
</ul>
</li>
<li class='tocline3'><a class='tocxref'
href='#StyleSheets-extensions'>1.3. Document Extensions</a>
<ul class='toc'>
<li class='tocline4'><a
href='#StyleSheets-LinkStyle'>LinkStyle</a>, <a
href='#StyleSheets-StyleSheet-DocumentStyle'>DocumentStyle</a></li>
</ul>
</li>
<li class='tocline3'><a class='tocxref'
href='#StyleSheets-Association'>1.4. Association between a style
sheet and a document.</a></li>
</ul>
</div>
<div class='div2'><a id="StyleSheets-overview"
name='StyleSheets-overview'></a>
<h2 id='StyleSheets-overview-h2' class='div2'>1.1.
Introduction</h2>
<p>The DOM Level 2 Style Sheet interfaces are base interfaces used
to represent any type of style sheet. The expectation is that DOM
modules that represent a specific style sheet language may contain
interfaces that derive from these interfaces.</p>
<p>The interfaces found within this section are not mandatory. A
DOM application may use the <code>hasFeature(feature,
version)</code> method of the <code>DOMImplementation</code>
interface with parameter values "StyleSheets" and "2.0"
(respectively) to determine whether or not this module is supported
by the implementation. In order to fully support this module, an
implementation must also support the "Core" feature defined defined
in the DOM 2 Core specification [<a class='noxref'
href='references.html#DOMCore'>DOM Level 2 Core</a>]. Please refer
to additional information about <a
href='http://www.w3.org/TR/DOM-Level-2-Core/introduction.html#ID-Conformance'>
<em>conformance</em></a> in the DOM Level 2 Core specification [<a
class='noxref' href='references.html#DOMCore'>DOM Level 2
Core</a>].</p>
</div>
<!-- div2 StyleSheets-overview -->
<div class='div2'><a id="StyleSheets-fundamental"
name='StyleSheets-fundamental'></a>
<h2 id='StyleSheets-fundamental-h2' class='div2'>1.2. Style Sheet
Interfaces</h2>
<p>This set of interfaces represents the generic notion of style
sheets.</p>
<dl>
<dt><b>Interface <i><a id="StyleSheets-StyleSheet"
name='StyleSheets-StyleSheet'>StyleSheet</a></i></b> (introduced in
<b class='since'>DOM Level 2</b>)</dt>
<dd>
<p>The <code>StyleSheet</code> interface is the abstract base
interface for any type of style sheet. It represents a single style
sheet associated with a structured document. In HTML, the
StyleSheet interface represents either an external style sheet,
included via the HTML <a
href='http://www.w3.org/TR/1998/REC-html40-19980424/struct/links.html#h-12.3'>
<em>LINK</em></a> element, or an inline <a
href='http://www.w3.org/TR/1998/REC-html40-19980424/present/styles.html#h-14.2.3'>
<em>STYLE</em></a> element. In XML, this interface represents an
external style sheet, included via a <a
href='http://www.w3.org/1999/06/REC-xml-stylesheet-19990629'><em>style
sheet processing instruction</em></a>.</p>
<dl>
<dt><br />
<b>IDL Definition</b></dt>
<dd>
<div class='idl-code'>
<pre>
// Introduced in DOM Level 2:
interface StyleSheet {
readonly attribute DOMString type;
attribute boolean disabled;
readonly attribute Node ownerNode;
readonly attribute StyleSheet parentStyleSheet;
readonly attribute DOMString href;
readonly attribute DOMString title;
readonly attribute MediaList media;
};
</pre>
</div>
<br />
</dd>
<dt><b>Attributes</b></dt>
<dd>
<dl>
<dt><code class='attribute-name'><a
id="StyleSheets-StyleSheet-disabled"
name='StyleSheets-StyleSheet-disabled'>disabled</a></code> of type
<code>boolean</code></dt>
<dd><code>false</code> if the style sheet is applied to the
document. <code>true</code> if it is not. Modifying this attribute
may cause a new resolution of style for the document. A stylesheet
only applies if both an appropriate medium definition is present
and the disabled attribute is false. So, if the media doesn't apply
to the current user agent, the <code>disabled</code> attribute is
ignored.<br />
</dd>
<dt><code class='attribute-name'><a
id="StyleSheets-StyleSheet-href"
name='StyleSheets-StyleSheet-href'>href</a></code> of type
<code>DOMString</code>, readonly</dt>
<dd>If the style sheet is a linked style sheet, the value of its
attribute is its location. For inline style sheets, the value of
this attribute is <code>null</code>. See the <a
href='http://www.w3.org/TR/1998/REC-html40-19980424/struct/links.html#adef-href'>
<em>href attribute definition</em></a> for the <code>LINK</code>
element in HTML 4.0, and the href pseudo-attribute for the XML <a
href='http://www.w3.org/1999/06/REC-xml-stylesheet-19990629/#The xml-stylesheet processing instruction'>
<em>style sheet processing instruction</em></a>.<br />
</dd>
<dt><code class='attribute-name'><a
id="StyleSheets-StyleSheet-media"
name='StyleSheets-StyleSheet-media'>media</a></code> of type <a
href='stylesheets.html#StyleSheets-MediaList'><code>MediaList</code></a>,
readonly</dt>
<dd>The intended destination media for style information. The media
is often specified in the <code>ownerNode</code>. If no media has
been specified, the <a
href='stylesheets.html#StyleSheets-MediaList'><code>MediaList</code></a>
will be empty. See the <a
href='http://www.w3.org/TR/1998/REC-html40-19980424/present/styles.html#adef-media'>
<em>media attribute definition</em></a> for the <code>LINK</code>
element in HTML 4.0, and the media pseudo-attribute for the XML <a
href='http://www.w3.org/1999/06/REC-xml-stylesheet-19990629/#The xml-stylesheet processing instruction'>
<em>style sheet processing instruction</em></a> . Modifying the
media list may cause a change to the attribute
<code>disabled</code>.<br />
</dd>
<dt><code class='attribute-name'><a
id="StyleSheets-StyleSheet-ownerNode"
name='StyleSheets-StyleSheet-ownerNode'>ownerNode</a></code> of
type <code>Node</code>, readonly</dt>
<dd>The node that associates this style sheet with the document.
For HTML, this may be the corresponding <code>LINK</code> or
<code>STYLE</code> element. For XML, it may be the linking
processing instruction. For style sheets that are included by other
style sheets, the value of this attribute is
<code>null</code>.<br />
</dd>
<dt><code class='attribute-name'><a
id="StyleSheets-StyleSheet-parentStyleSheet"
name='StyleSheets-StyleSheet-parentStyleSheet'>parentStyleSheet</a></code>
of type <a
href='stylesheets.html#StyleSheets-StyleSheet'><code>StyleSheet</code></a>,
readonly</dt>
<dd>For style sheet languages that support the concept of style
sheet inclusion, this attribute represents the including style
sheet, if one exists. If the style sheet is a top-level style
sheet, or the style sheet language does not support inclusion, the
value of this attribute is <code>null</code>.<br />
</dd>
<dt><code class='attribute-name'><a
id="StyleSheets-StyleSheet-title"
name='StyleSheets-StyleSheet-title'>title</a></code> of type
<code>DOMString</code>, readonly</dt>
<dd>The advisory title. The title is often specified in the
<code>ownerNode</code>. See the <a
href='http://www.w3.org/TR/1998/REC-html40-19980424/struct/global.html#adef-title'>
<em>title attribute definition</em></a> for the <code>LINK</code>
element in HTML 4.0, and the title pseudo-attribute for the XML <a
href='http://www.w3.org/1999/06/REC-xml-stylesheet-19990629/#The xml-stylesheet processing instruction'>
<em>style sheet processing instruction</em></a>.<br />
</dd>
<dt><code class='attribute-name'><a
id="StyleSheets-StyleSheet-type"
name='StyleSheets-StyleSheet-type'>type</a></code> of type
<code>DOMString</code>, readonly</dt>
<dd>This specifies the style sheet language for this style sheet.
The style sheet language is specified as a content type (e.g.
"text/css"). The <a
href='http://www.w3.org/TR/1998/REC-html40-19980424/types.html#type-content-type'>
<em>content type</em></a> is often specified in the
<code>ownerNode</code>. Also see the <a
href='http://www.w3.org/TR/1998/REC-html40-19980424/struct/links.html#adef-type-A'>
<em>type attribute definition</em></a> for the <code>LINK</code>
element in HTML 4.0, and the type pseudo-attribute for the XML <a
href='http://www.w3.org/1999/06/REC-xml-stylesheet-19990629'><em>style
sheet processing instruction</em></a>.<br />
</dd>
</dl>
</dd>
</dl>
</dd>
<dt><b>Interface <i><a id="StyleSheets-StyleSheetList"
name='StyleSheets-StyleSheetList'>StyleSheetList</a></i></b>
(introduced in <b class='since'>DOM Level 2</b>)</dt>
<dd>
<p>The <code>StyleSheetList</code> interface provides the
abstraction of an ordered collection of style sheets.</p>
<p>The items in the <code>StyleSheetList</code> are accessible via
an integral index, starting from 0.</p>
<dl>
<dt><br />
<b>IDL Definition</b></dt>
<dd>
<div class='idl-code'>
<pre>
// Introduced in DOM Level 2:
interface StyleSheetList {
readonly attribute unsigned long length;
StyleSheet item(in unsigned long index);
};
</pre>
</div>
<br />
</dd>
<dt><b>Attributes</b></dt>
<dd>
<dl>
<dt><code class='attribute-name'><a
id="StyleSheets-StyleSheetList-length"
name='StyleSheets-StyleSheetList-length'>length</a></code> of type
<code>unsigned long</code>, readonly</dt>
<dd>The number of <a
href='stylesheets.html#StyleSheets-StyleSheet'><code>StyleSheets</code></a>
in the list. The range of valid child stylesheet indices is
<code>0</code> to <code>length-1</code> inclusive.<br />
</dd>
</dl>
</dd>
<dt><b>Methods</b></dt>
<dd>
<dl>
<dt><code class='method-name'><a
id="StyleSheets-StyleSheetList-item"
name='StyleSheets-StyleSheetList-item'>item</a></code></dt>
<dd>
<div class='method'>Used to retrieve a style sheet by ordinal
index. If index is greater than or equal to the number of style
sheets in the list, this returns <code>null</code>.
<div class='parameters'><b>Parameters</b>
<div class='paramtable'>
<dl>
<dt><code class='parameter-name'>index</code> of type
<code>unsigned long</code></dt>
<dd>Index into the collection<br />
</dd>
</dl>
</div>
</div>
<!-- parameters -->
<div class='return'><b>Return Value</b>
<div class='returntable'>
<table
summary='Layout table: the first cell contains the type of the return value, the second contains a short description'
border='0'>
<tr>
<td valign='top'>
<p><a
href='stylesheets.html#StyleSheets-StyleSheet'><code>StyleSheet</code></a></p>
</td>
<td>
<p>The style sheet at the <code>index</code> position in the
<code>StyleSheetList</code>, or <code>null</code> if that is not a
valid index.</p>
</td>
</tr>
</table>
</div>
</div>
<!-- return -->
<div><b>No Exceptions</b></div>
</div>
<!-- method -->
</dd>
</dl>
</dd>
</dl>
</dd>
<dt><b>Interface <i><a id="StyleSheets-MediaList"
name='StyleSheets-MediaList'>MediaList</a></i></b> (introduced in
<b class='since'>DOM Level 2</b>)</dt>
<dd>
<p>The <code>MediaList</code> interface provides the abstraction of
an ordered collection of <a
href='http://www.w3.org/TR/1998/REC-html40-19980424/types.html#h-6.13'>
<em>media</em></a>, without defining or constraining how this
collection is implemented. An empty list is the same as a list that
contains the medium <code>"all"</code>.</p>
<p>The items in the <code>MediaList</code> are accessible via an
integral index, starting from 0.</p>
<dl>
<dt><br />
<b>IDL Definition</b></dt>
<dd>
<div class='idl-code'>
<pre>
// Introduced in DOM Level 2:
interface MediaList {
attribute DOMString mediaText;
// raises(DOMException) on setting
readonly attribute unsigned long length;
DOMString item(in unsigned long index);
void deleteMedium(in DOMString oldMedium)
raises(DOMException);
void appendMedium(in DOMString newMedium)
raises(DOMException);
};
</pre>
</div>
<br />
</dd>
<dt><b>Attributes</b></dt>
<dd>
<dl>
<dt><code class='attribute-name'><a
id="StyleSheets-MediaList-length"
name='StyleSheets-MediaList-length'>length</a></code> of type
<code>unsigned long</code>, readonly</dt>
<dd>The number of media in the list. The range of valid media is
<code>0</code> to <code>length-1</code> inclusive.<br />
</dd>
<dt><code class='attribute-name'><a
id="StyleSheets-MediaList-mediaText"
name='StyleSheets-MediaList-mediaText'>mediaText</a></code> of type
<code>DOMString</code></dt>
<dd>The parsable textual representation of the media list. This is
a comma-separated list of media.<br />
<div class='exceptions'><b>Exceptions on setting</b>
<div class='exceptiontable'>
<table
summary='Layout table: the first cell contains the type of the exception, the second contains the specific error code and a short description'
border='0'>
<tr>
<td valign='top'>
<p><code>DOMException</code></p>
</td>
<td>
<p>SYNTAX_ERR: Raised if the specified string value has a syntax
error and is unparsable.</p>
<p>NO_MODIFICATION_ALLOWED_ERR: Raised if this media list is
readonly.</p>
</td>
</tr>
</table>
</div>
</div>
<!-- exceptions -->
</dd>
</dl>
</dd>
<dt><b>Methods</b></dt>
<dd>
<dl>
<dt><code class='method-name'><a
id="StyleSheets-MediaList-appendMedium"
name='StyleSheets-MediaList-appendMedium'>appendMedium</a></code></dt>
<dd>
<div class='method'>Adds the medium <code>newMedium</code> to the
end of the list. If the <code>newMedium</code> is already used, it
is first removed.
<div class='parameters'><b>Parameters</b>
<div class='paramtable'>
<dl>
<dt><code class='parameter-name'>newMedium</code> of type
<code>DOMString</code></dt>
<dd>The new medium to add.<br />
</dd>
</dl>
</div>
</div>
<!-- parameters -->
<div class='exceptions'><b>Exceptions</b>
<div class='exceptiontable'>
<table
summary='Layout table: the first cell contains the type of the exception, the second contains the specific error code and a short description'
border='0'>
<tr>
<td valign='top'>
<p><code>DOMException</code></p>
</td>
<td>
<p>INVALID_CHARACTER_ERR: If the medium contains characters that
are invalid in the underlying style language.</p>
<p>NO_MODIFICATION_ALLOWED_ERR: Raised if this list is
readonly.</p>
</td>
</tr>
</table>
</div>
</div>
<!-- exceptions -->
<div><b>No Return Value</b></div>
</div>
<!-- method -->
</dd>
<dt><code class='method-name'><a
id="StyleSheets-MediaList-deleteMedium"
name='StyleSheets-MediaList-deleteMedium'>deleteMedium</a></code></dt>
<dd>
<div class='method'>Deletes the medium indicated by
<code>oldMedium</code> from the list.
<div class='parameters'><b>Parameters</b>
<div class='paramtable'>
<dl>
<dt><code class='parameter-name'>oldMedium</code> of type
<code>DOMString</code></dt>
<dd>The medium to delete in the media list.<br />
</dd>
</dl>
</div>
</div>
<!-- parameters -->
<div class='exceptions'><b>Exceptions</b>
<div class='exceptiontable'>
<table
summary='Layout table: the first cell contains the type of the exception, the second contains the specific error code and a short description'
border='0'>
<tr>
<td valign='top'>
<p><code>DOMException</code></p>
</td>
<td>
<p>NO_MODIFICATION_ALLOWED_ERR: Raised if this list is
readonly.</p>
<p>NOT_FOUND_ERR: Raised if <code>oldMedium</code> is not in the
list.</p>
</td>
</tr>
</table>
</div>
</div>
<!-- exceptions -->
<div><b>No Return Value</b></div>
</div>
<!-- method -->
</dd>
<dt><code class='method-name'><a id="StyleSheets-MediaList-item"
name='StyleSheets-MediaList-item'>item</a></code></dt>
<dd>
<div class='method'>Returns the <code>index</code>th in the list.
If <code>index</code> is greater than or equal to the number of
media in the list, this returns <code>null</code>.
<div class='parameters'><b>Parameters</b>
<div class='paramtable'>
<dl>
<dt><code class='parameter-name'>index</code> of type
<code>unsigned long</code></dt>
<dd>Index into the collection.<br />
</dd>
</dl>
</div>
</div>
<!-- parameters -->
<div class='return'><b>Return Value</b>
<div class='returntable'>
<table
summary='Layout table: the first cell contains the type of the return value, the second contains a short description'
border='0'>
<tr>
<td valign='top'>
<p><code>DOMString</code></p>
</td>
<td>
<p>The medium at the <code>index</code>th position in the
<code>MediaList</code>, or <code>null</code> if that is not a valid
index.</p>
</td>
</tr>
</table>
</div>
</div>
<!-- return -->
<div><b>No Exceptions</b></div>
</div>
<!-- method -->
</dd>
</dl>
</dd>
</dl>
</dd>
</dl>
</div>
<!-- div2 StyleSheets-fundamental -->
<div class='div2'><a id="StyleSheets-extensions"
name='StyleSheets-extensions'></a>
<h2 id='StyleSheets-extensions-h2' class='div2'>1.3. Document
Extensions</h2>
<dl>
<dt><b>Interface <i><a id="StyleSheets-LinkStyle"
name='StyleSheets-LinkStyle'>LinkStyle</a></i></b> (introduced in
<b class='since'>DOM Level 2</b>)</dt>
<dd>
<p>The <code>LinkStyle</code> interface provides a mechanism by
which a style sheet can be retrieved from the node responsible for
linking it into a document. An instance of the
<code>LinkStyle</code> interface can be obtained using
binding-specific casting methods on an instance of a linking node
(<code>HTMLLinkElement</code>, <code>HTMLStyleElement</code> or
<code>ProcessingInstruction</code> in DOM Level 2).</p>
<dl>
<dt><br />
<b>IDL Definition</b></dt>
<dd>
<div class='idl-code'>
<pre>
// Introduced in DOM Level 2:
interface LinkStyle {
readonly attribute StyleSheet sheet;
};
</pre>
</div>
<br />
</dd>
<dt><b>Attributes</b></dt>
<dd>
<dl>
<dt><code class='attribute-name'><a
id="StyleSheets-LinkStyle-sheet"
name='StyleSheets-LinkStyle-sheet'>sheet</a></code> of type <a
href='stylesheets.html#StyleSheets-StyleSheet'><code>StyleSheet</code></a>,
readonly</dt>
<dd>The style sheet.<br />
</dd>
</dl>
</dd>
</dl>
</dd>
<dt><b>Interface <i><a id="StyleSheets-StyleSheet-DocumentStyle"
name='StyleSheets-StyleSheet-DocumentStyle'>DocumentStyle</a></i></b>
(introduced in <b class='since'>DOM Level 2</b>)</dt>
<dd>
<p>The <code>DocumentStyle</code> interface provides a mechanism by
which the style sheets embedded in a document can be retrieved. The
expectation is that an instance of the <code>DocumentStyle</code>
interface can be obtained by using binding-specific casting methods
on an instance of the <code>Document</code> interface.</p>
<dl>
<dt><br />
<b>IDL Definition</b></dt>
<dd>
<div class='idl-code'>
<pre>
// Introduced in DOM Level 2:
interface DocumentStyle {
readonly attribute StyleSheetList styleSheets;
};
</pre>
</div>
<br />
</dd>
<dt><b>Attributes</b></dt>
<dd>
<dl>
<dt><code class='attribute-name'><a
id="StyleSheets-DocumentStyle-styleSheets"
name='StyleSheets-DocumentStyle-styleSheets'>styleSheets</a></code>
of type <a
href='stylesheets.html#StyleSheets-StyleSheetList'><code>StyleSheetList</code></a>,
readonly</dt>
<dd>A list containing all the style sheets explicitly linked into
or embedded in a document. For HTML documents, this includes
external style sheets, included via the HTML <a
href='http://www.w3.org/TR/1998/REC-html40-19980424/struct/links.html#h-12.3'>
<em>LINK</em></a> element, and inline <a
href='http://www.w3.org/TR/1998/REC-html40-19980424/present/styles.html#h-14.2.3'>
<em>STYLE</em></a> elements. In XML, this includes external style
sheets, included via style sheet processing instructions (see [<a
class='noxref'
href='references.html#XML-StyleSheet'>XML-StyleSheet</a>]).<br />
</dd>
</dl>
</dd>
</dl>
</dd>
</dl>
</div>
<!-- div2 StyleSheets-extensions -->
<div class='div2'><a id="StyleSheets-Association"
name='StyleSheets-Association'></a>
<h2 id='StyleSheets-Association-h2' class='div2'>1.4. Association
between a style sheet and a document.</h2>
<dl>
<dt><b>HTML and Style Sheet Creation</b></dt>
<dd>A style sheet can be associated with an HTMLDocument in one of
two ways:
<ul>
<li>By creating a new LINK HTML element (see the
<code>HTMLLinkElement</code> interface in the [<a class='noxref'
href='references.html#DOMHTML-inf'>DOM Level 2 HTML</a>] and [<a
class='noxref' href='references.html#HTML40'>HTML4.0</a>]). The
underlying style sheet will be created after the element is
inserted into the document and both the href and the type attribute
have been set in a way indicating that the linked object is a style
sheet.</li>
<li>By creating a new STYLE HTML element (see the
<code>HTMLStyleElement</code> interface in the [<a class='noxref'
href='references.html#DOMHTML-inf'>DOM Level 2 HTML</a>] and [<a
class='noxref' href='references.html#HTML40'>HTML4.0</a>]). The
underlying style sheet will be created after the element is
inserted into the document and the type attribute is set in a way
indicating that the element corresponds to a style sheet language
interpreted by the user agent.</li>
</ul>
</dd>
<dt><b>HTML and Style Sheet Removal</b></dt>
<dd>Removing a LINK HTML element or a STYLE HTML element removes
the underlying style sheet from the style sheet collection
associated with a document. Specifically, the removed style sheet
is no longer applied to the presentation of the document.</dd>
<dt><b>XML and Style Sheet Creation</b></dt>
<dd>A new style sheet can be created and associated with an XML
document by creating a processing instruction with the target
'xml-stylesheet' [<a class='noxref'
href='references.html#XML-StyleSheet'>XML-StyleSheet</a>] and
inserting it into the document.</dd>
<dt><b>XML and Style Sheet Removal</b></dt>
<dd>Removing a processing instruction with a target of
'xml-stylesheet' [<a class='noxref'
href='references.html#XML-StyleSheet'>XML-StyleSheet</a>] removes
the underlying style sheet from the style sheet collection
associated with a document. Specifically, the removed style sheet
is no longer applied to the presentation of the document.</dd>
</dl>
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distrib
>
Mageia
>
5
>
x86_64
>
media
>
core-release
>
by-pkgid
>
1fce4ef419c004933c122e6231d6200b
>
files
>
97
