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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Wt: Wt::WRegExpValidator Class Reference</title>
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<div class="navpath"><a class="el" href="namespaceWt.html">Wt</a>::<a class="el" href="classWt_1_1WRegExpValidator.html">WRegExpValidator</a>
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<h1>Wt::WRegExpValidator Class Reference</h1><!-- doxytag: class="Wt::WRegExpValidator" --><!-- doxytag: inherits="Wt::WValidator" -->A validator that checks user input against a regular expression.
<a href="#_details">More...</a>
<p>
<code>#include <Wt/WRegExpValidator></code>
<p>
<div class="dynheader">
Inheritance diagram for Wt::WRegExpValidator:</div>
<div class="dynsection">
<p><center><img src="classWt_1_1WRegExpValidator__inherit__graph.png" border="0" usemap="#Wt_1_1WRegExpValidator__inherit__map" alt="Inheritance graph"></center>
<map name="Wt_1_1WRegExpValidator__inherit__map">
<area shape="rect" href="classWt_1_1WValidator.html" title="A validator is used to validate user input according to pre-defined rules." alt="" coords="28,80,135,107"><area shape="rect" href="classWt_1_1WObject.html" title="A base class for objects that participate in the signal/slot system." alt="" coords="33,5,129,32"></map>
<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center></div>
<p>
<a href="classWt_1_1WRegExpValidator-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="c73905fa4427ee0ab0ee83e6eeac0373"></a><!-- doxytag: member="Wt::WRegExpValidator::WRegExpValidator" ref="c73905fa4427ee0ab0ee83e6eeac0373" args="(WObject *parent=0)" -->
</td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WRegExpValidator.html#c73905fa4427ee0ab0ee83e6eeac0373">WRegExpValidator</a> (<a class="el" href="classWt_1_1WObject.html">WObject</a> *parent=0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets a new regular expression validator. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WRegExpValidator.html#7536b67e2bedd2dfdb5b89c9dd56602b">WRegExpValidator</a> (const <a class="el" href="classWt_1_1WString.html">WString</a> &pattern, <a class="el" href="classWt_1_1WObject.html">WObject</a> *parent=0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets a new regular expression validator that accepts input that matches the given regular expression. <a href="#7536b67e2bedd2dfdb5b89c9dd56602b"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a3a0d2b4c2bec81325eebfab1530d3dc"></a><!-- doxytag: member="Wt::WRegExpValidator::~WRegExpValidator" ref="a3a0d2b4c2bec81325eebfab1530d3dc" args="()" -->
</td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WRegExpValidator.html#a3a0d2b4c2bec81325eebfab1530d3dc">~WRegExpValidator</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WRegExpValidator.html#71190cef122cc6000be16d9703393cd9">setRegExp</a> (const <a class="el" href="classWt_1_1WString.html">WString</a> &pattern)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the regular expression for valid input. <a href="#71190cef122cc6000be16d9703393cd9"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classWt_1_1WString.html">WString</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WRegExpValidator.html#d4af69a61c23bf59db1b7c6bedf56311">regExp</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the regular expression for valid input. <a href="#d4af69a61c23bf59db1b7c6bedf56311"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="classWt_1_1WValidator.html#638a1feefca259ea2f806a8add2d18a3">State</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WRegExpValidator.html#cd0bc1ff9dc23f4f34c6840e3d0d5edc">validate</a> (<a class="el" href="classWt_1_1WString.html">WString</a> &input) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Validates the given input. <a href="#cd0bc1ff9dc23f4f34c6840e3d0d5edc"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="6ca44df82213538b13026d27f721669c"></a><!-- doxytag: member="Wt::WRegExpValidator::createExtConfig" ref="6ca44df82213538b13026d27f721669c" args="(std::ostream &config) const " -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WRegExpValidator.html#6ca44df82213538b13026d27f721669c">createExtConfig</a> (std::ostream &config) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Provides Ext-compatible config options for client-side validation. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WRegExpValidator.html#41fdea26cc852b40a1f1c16c09624f01">setNoMatchText</a> (const <a class="el" href="classWt_1_1WString.html">WString</a> &text)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the text to be shown if no match can be found. <a href="#41fdea26cc852b40a1f1c16c09624f01"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WRegExpValidator.html#41b52e1428a6561c5be695702e20318a">setInvalidNoMatchText</a> (const <a class="el" href="classWt_1_1WString.html">WString</a> &text)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the message to display when the input does not match. <a href="#41b52e1428a6561c5be695702e20318a"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classWt_1_1WString.html">WString</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WRegExpValidator.html#144ed2ffa928a0f6f28e456880126397">invalidNoMatchText</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the message displayed when the input does not match. <a href="#144ed2ffa928a0f6f28e456880126397"></a><br></td></tr>
<tr><td colspan="2"><br><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">std::string </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WRegExpValidator.html#ae5e8bce20a76f654cd007b8b85cba0d">javaScriptValidate</a> (const std::string &jsRef) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a Javascript expression that validates the input. <a href="#ae5e8bce20a76f654cd007b8b85cba0d"></a><br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
A validator that checks user input against a regular expression.
<p>
This validator checks whether user input is matched by the given (perl-like) regular expression.<p>
The following perl features are not supported (since client-side validation cannot handle them): <ul>
<li>
No Lookbehind support, i.e. the constructs (?<=text) and (?<!text). </li>
<li>
No atomic grouping, i.e. the construct (?>group). </li>
<li>
No conditional expressions, i.e. the consturct (?ifthen|else). </li>
</ul>
<p>
Usage example:<p>
<div class="fragment"><pre class="fragment"> <a class="code" href="classWt_1_1WLineEdit.html" title="A widget that provides a single line edit.">Wt::WLineEdit</a> *lineEdit = <span class="keyword">new</span> <a class="code" href="classWt_1_1WLineEdit.html" title="A widget that provides a single line edit.">Wt::WLineEdit</a>(<span class="keyword">this</span>);
<span class="comment">// an email address validator</span>
<a class="code" href="classWt_1_1WRegExpValidator.html" title="A validator that checks user input against a regular expression.">Wt::WRegExpValidator</a> *validator = <span class="keyword">new</span> <a class="code" href="classWt_1_1WRegExpValidator.html" title="A validator that checks user input against a regular expression.">Wt::WRegExpValidator</a>(<span class="stringliteral">"[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,4}"</span>);
lineEdit-><a class="code" href="classWt_1_1WFormWidget.html#a773d16013d6959149ce5081e84b259c" title="Sets a validator for this field.">setValidator</a>(validator);
lineEdit-><a class="code" href="classWt_1_1WLineEdit.html#ddb99c6ab5483836adf44a2706a410af" title="Sets the content of the line edit.">setText</a>(<span class="stringliteral">"koen@emweb.be"</span>);
</pre></div><p>
<dl class="note" compact><dt><b>Note:</b></dt><dd>This validator does not fully support unicode: it matches on the UTF8-encoded representation of the string. </dd></dl>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="7536b67e2bedd2dfdb5b89c9dd56602b"></a><!-- doxytag: member="Wt::WRegExpValidator::WRegExpValidator" ref="7536b67e2bedd2dfdb5b89c9dd56602b" args="(const WString &pattern, WObject *parent=0)" -->
<div class="memitem">
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<td class="memname">Wt::WRegExpValidator::WRegExpValidator </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classWt_1_1WString.html">WString</a> & </td>
<td class="paramname"> <em>pattern</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="classWt_1_1WObject.html">WObject</a> * </td>
<td class="paramname"> <em>parent</em> = <code>0</code></td><td> </td>
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<td></td>
<td>)</td>
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<p>
Sets a new regular expression validator that accepts input that matches the given regular expression.
<p>
This constructs a validator that matches the perl regular expression <code>expr</code>.
</div>
</div><p>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="71190cef122cc6000be16d9703393cd9"></a><!-- doxytag: member="Wt::WRegExpValidator::setRegExp" ref="71190cef122cc6000be16d9703393cd9" args="(const WString &pattern)" -->
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<td class="memname">void Wt::WRegExpValidator::setRegExp </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classWt_1_1WString.html">WString</a> & </td>
<td class="paramname"> <em>pattern</em> </td>
<td> ) </td>
<td></td>
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<div class="memdoc">
<p>
Sets the regular expression for valid input.
<p>
Sets the perl regular expression <code>expr</code>.
</div>
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<a class="anchor" name="d4af69a61c23bf59db1b7c6bedf56311"></a><!-- doxytag: member="Wt::WRegExpValidator::regExp" ref="d4af69a61c23bf59db1b7c6bedf56311" args="() const " -->
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<td class="memname"><a class="el" href="classWt_1_1WString.html">WString</a> Wt::WRegExpValidator::regExp </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const</td>
</tr>
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<div class="memdoc">
<p>
Returns the regular expression for valid input.
<p>
Returns the perl regular expression.
</div>
</div><p>
<a class="anchor" name="cd0bc1ff9dc23f4f34c6840e3d0d5edc"></a><!-- doxytag: member="Wt::WRegExpValidator::validate" ref="cd0bc1ff9dc23f4f34c6840e3d0d5edc" args="(WString &input) const " -->
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<td class="memname"><a class="el" href="classWt_1_1WValidator.html#638a1feefca259ea2f806a8add2d18a3">WValidator::State</a> Wt::WRegExpValidator::validate </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classWt_1_1WString.html">WString</a> & </td>
<td class="paramname"> <em>input</em> </td>
<td> ) </td>
<td> const<code> [virtual]</code></td>
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<div class="memdoc">
<p>
Validates the given input.
<p>
The input is considered valid only when it is blank for a non-mandatory field, or matches the regular expression.
<p>Reimplemented from <a class="el" href="classWt_1_1WValidator.html#fce53cf7c8fa1692234df0538163b4e0">Wt::WValidator</a>.</p>
</div>
</div><p>
<a class="anchor" name="41fdea26cc852b40a1f1c16c09624f01"></a><!-- doxytag: member="Wt::WRegExpValidator::setNoMatchText" ref="41fdea26cc852b40a1f1c16c09624f01" args="(const WString &text)" -->
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<td class="memname">void Wt::WRegExpValidator::setNoMatchText </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classWt_1_1WString.html">WString</a> & </td>
<td class="paramname"> <em>text</em> </td>
<td> ) </td>
<td></td>
</tr>
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<div class="memdoc">
<p>
Sets the text to be shown if no match can be found.
<p>
Sets the text to be shown if no match can be found.
</div>
</div><p>
<a class="anchor" name="41b52e1428a6561c5be695702e20318a"></a><!-- doxytag: member="Wt::WRegExpValidator::setInvalidNoMatchText" ref="41b52e1428a6561c5be695702e20318a" args="(const WString &text)" -->
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<td class="memname">void Wt::WRegExpValidator::setInvalidNoMatchText </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classWt_1_1WString.html">WString</a> & </td>
<td class="paramname"> <em>text</em> </td>
<td> ) </td>
<td></td>
</tr>
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<div class="memdoc">
<p>
Sets the message to display when the input does not match.
<p>
The default value is "Invalid input".
</div>
</div><p>
<a class="anchor" name="144ed2ffa928a0f6f28e456880126397"></a><!-- doxytag: member="Wt::WRegExpValidator::invalidNoMatchText" ref="144ed2ffa928a0f6f28e456880126397" args="() const " -->
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<td class="memname"><a class="el" href="classWt_1_1WString.html">WString</a> Wt::WRegExpValidator::invalidNoMatchText </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const</td>
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<div class="memdoc">
<p>
Returns the message displayed when the input does not match.
<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WRegExpValidator.html#41b52e1428a6561c5be695702e20318a" title="Sets the message to display when the input does not match.">setInvalidNoMatchText(const WString&)</a> </dd></dl>
</div>
</div><p>
<a class="anchor" name="ae5e8bce20a76f654cd007b8b85cba0d"></a><!-- doxytag: member="Wt::WRegExpValidator::javaScriptValidate" ref="ae5e8bce20a76f654cd007b8b85cba0d" args="(const std::string &jsRef) const " -->
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<td class="memname">std::string Wt::WRegExpValidator::javaScriptValidate </td>
<td>(</td>
<td class="paramtype">const std::string & </td>
<td class="paramname"> <em>jsRef</em> </td>
<td> ) </td>
<td> const<code> [protected, virtual]</code></td>
</tr>
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<p>
Creates a Javascript expression that validates the input.
<p>
The JavaScript expression should evaluate to an object with two fields: a boolean <em>valid</em>, and a <code>message</code> that indicates the problem if not valid.<p>
Return an empty string if you are not provide the client-side validation.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WValidator.html#1ca29b7eaabf4c1655200ec382a84554" title="Returns a regular expression that filters input.">inputFilter()</a> </dd></dl>
<p>Reimplemented from <a class="el" href="classWt_1_1WValidator.html#5141a6c178329e6d26faad71e7bf26aa">Wt::WValidator</a>.</p>
</div>
</div><p>
</div>
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