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KDE 4.9 PyKDE API Reference
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<h1>VariableInterface Class Reference</h1>
<code>from PyKDE4.ktexteditor import *</code>
<p>
Namespace: <a href="../ktexteditor/KTextEditor.html">KTextEditor</a><br />
<h2>Detailed Description</h2>
<p>Variable/Modeline extension interface for the Document.
</p>
<p>
<b>Introduction </b>
</p>
<p>
The VariableInterface is designed to provide access to so called
"document variables" (also called modelines), for example variables
defined in files like "kate: variable value;" or the emacs style
"-*- variable: value -*-".
</p>
<p>
The idea is to allow KTextEditor plugins and applications to use document
variables. A document implementing this interface should return values
for variables that it does not otherwise know how to use, since they
could be of interest for plugins. A Document implementing this interface
must emit the signal variableChanged() whenever a variable/value pair was
set, changed or removed.
</p>
<p>
<dl class="note" compact><dt><b>Note:</b></dt><dd> Implementations should check the document variables whenever the
document was saved or loaded.
</dd></dl> </p>
<p>
<b>Accessing the VariableInterface </b>
</p>
<p>
The VariableInterface is an extension interface for a
Document, i.e. the Document inherits the interface provided that the
used KTextEditor library implements the interface. Use qobject_cast to
access the interface:
<pre class="fragment">
// doc is of type KTextEditor.Document*
KTextEditor.VariableInterface *iface =
qobject_cast<KTextEditor.VariableInterface*>( doc );
if( iface ) {
// the implementation supports the interface
// do stuff
}
</pre>
</p>
<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd> KTextEditor.Document, KTextEditor.Plugin
</dd></dl>
<dl class="author" compact><dt><b>Author:</b></dt><dd> Anders Lund <anders@alweb.dk> </dd></dl>
</p>
<table border="0" cellpadding="0" cellspacing="0"><tr><td colspan="2"><br><h2>Methods</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#VariableInterface">__init__</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">QString </td><td class="memItemRight" valign="bottom"><a class="el" href="#variable">variable</a> (self, QString name)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#variableChanged">variableChanged</a> (self, <a href="../ktexteditor/KTextEditor.Document.html">KTextEditor.Document</a> document, QString variable, QString value)</td></tr>
</table>
<hr><h2>Method Documentation</h2><a class="anchor" name="VariableInterface"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"></div></div><a class="anchor" name="variable"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">QString variable</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QString </td>
<td class="paramname"><em>name</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><dl compact><dt><b>Abstract method:</b></dt><dd>This method is abstract and can be overridden but not called directly.</dd></dl><p>Get the value of the variable <b>name.</b>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> the value or an empty string if the variable is not set or has
no value.
</dd></dl>
</p></div></div><a class="anchor" name="variableChanged"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> variableChanged</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../ktexteditor/KTextEditor.Document.html">KTextEditor.Document</a> </td>
<td class="paramname"><em>document</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QString </td>
<td class="paramname"><em>variable</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QString </td>
<td class="paramname"><em>value</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><dl compact><dt><b>Abstract method:</b></dt><dd>This method is abstract and can be overridden but not called directly.</dd></dl><p>The <b>document</b> emits this signal whenever the <b>value</b> of the
<b>variable</b> changed, this includes when a variable was initially set.
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>document</em> </td><td> document that emitted the signal
</td></tr> </table></dl>
<p> </p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>variable</em> </td><td> variable that changed
</td></tr> </table></dl>
<p> </p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>value</em> </td><td> new value for variable
</td></tr> </table></dl>
<p> <dl class="see" compact><dt><b>See also:</b></dt><dd> variable()
</dd></dl>
</p></div></div>
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