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 <span id="projectnumber">3.2.1</span>
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<!-- doxytag: class="Wt::WDoubleValidator" --><!-- doxytag: inherits="Wt::WValidator" -->
<p>A validator for validating floating point user input.
<a href="classWt_1_1WDoubleValidator.html#details">More...</a></p>
<p><code>#include <Wt/WDoubleValidator></code></p>
<div class="dynheader">
Inheritance diagram for Wt::WDoubleValidator:</div>
<div class="dyncontent">
<div class="center"><img src="classWt_1_1WDoubleValidator__inherit__graph.png" border="0" usemap="#Wt_1_1WDoubleValidator_inherit__map" alt="Inheritance graph"/></div>
<map name="Wt_1_1WDoubleValidator_inherit__map" id="Wt_1_1WDoubleValidator_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="25,80,135,107"/><area shape="rect" href="classWt_1_1WObject.html" title="A base class for objects that participate in the signal/slot system." alt="" coords="32,5,128,32"/></map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<p><a href="classWt_1_1WDoubleValidator-members.html">List of all members.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a60ac6a9c4da70a17daa84a41d04b87dd"></a><!-- doxytag: member="Wt::WDoubleValidator::WDoubleValidator" ref="a60ac6a9c4da70a17daa84a41d04b87dd" args="(WObject *parent=0)" -->
 </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WDoubleValidator.html#a60ac6a9c4da70a17daa84a41d04b87dd">WDoubleValidator</a> (<a class="el" href="classWt_1_1WObject.html">WObject</a> *parent=0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a new double validator that accepts any double. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a3a7b569012485ce6a217c47ffb26af24"></a><!-- doxytag: member="Wt::WDoubleValidator::WDoubleValidator" ref="a3a7b569012485ce6a217c47ffb26af24" args="(double minimum, double maximum, WObject *parent=0)" -->
 </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WDoubleValidator.html#a3a7b569012485ce6a217c47ffb26af24">WDoubleValidator</a> (double minimum, double maximum, <a class="el" href="classWt_1_1WObject.html">WObject</a> *parent=0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a new double validator that accepts double within the given range. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aa1f6b0952651e5503e6ff6657bd09180"></a><!-- doxytag: member="Wt::WDoubleValidator::bottom" ref="aa1f6b0952651e5503e6ff6657bd09180" args="() const " -->
double </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WDoubleValidator.html#aa1f6b0952651e5503e6ff6657bd09180">bottom</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the bottom of the valid double range. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WDoubleValidator.html#a520fe2f7859670b0c30144dbc4990e98">setBottom</a> (double bottom)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the bottom of the valid double range. <a href="#a520fe2f7859670b0c30144dbc4990e98"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a708124404d7088f51f458bee1641288d"></a><!-- doxytag: member="Wt::WDoubleValidator::top" ref="a708124404d7088f51f458bee1641288d" args="() const " -->
double </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WDoubleValidator.html#a708124404d7088f51f458bee1641288d">top</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the top of the valid double range. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WDoubleValidator.html#a931cc4c5d0409093f4a6fd8ab023ee73">setTop</a> (double top)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the top of the valid double range. <a href="#a931cc4c5d0409093f4a6fd8ab023ee73"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a160f579d7884d02786a1cc36ec3ecca1"></a><!-- doxytag: member="Wt::WDoubleValidator::setRange" ref="a160f579d7884d02786a1cc36ec3ecca1" args="(double bottom, double top)" -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WDoubleValidator.html#a160f579d7884d02786a1cc36ec3ecca1">setRange</a> (double bottom, double top)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the range of valid doubles. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classWt_1_1WValidator_1_1Result.html">Result</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WDoubleValidator.html#a83572a7226b8c6a09b88d7b7ec17fcef">validate</a> (const <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="#a83572a7226b8c6a09b88d7b7ec17fcef"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a497f1ef7ea1b403665b9f1b7685954d4"></a><!-- doxytag: member="Wt::WDoubleValidator::createExtConfig" ref="a497f1ef7ea1b403665b9f1b7685954d4" args="(std::ostream &config) const " -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WDoubleValidator.html#a497f1ef7ea1b403665b9f1b7685954d4">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" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WDoubleValidator.html#a86e8f0e07b6c861af2e656575a329d47">setInvalidNotANumberText</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 is not a number. <a href="#a86e8f0e07b6c861af2e656575a329d47"></a><br/></td></tr>
<tr><td class="memItemLeft" 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_1WDoubleValidator.html#a474314e509e47d2a577a26841fe4a752">invalidNotANumberText</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the message displayed when the input is not a number. <a href="#a474314e509e47d2a577a26841fe4a752"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WDoubleValidator.html#a119b5f1c2396f8d595c2607e76d27b1a">setInvalidTooSmallText</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 number is too small. <a href="#a119b5f1c2396f8d595c2607e76d27b1a"></a><br/></td></tr>
<tr><td class="memItemLeft" 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_1WDoubleValidator.html#a13fb51475bab73ea71405f6fa9158c6d">invalidTooSmallText</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the message displayed when the number is too small. <a href="#a13fb51475bab73ea71405f6fa9158c6d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WDoubleValidator.html#a6c3fa94752583d7e2de640cf6b91cef7">setInvalidTooLargeText</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 number is too large. <a href="#a6c3fa94752583d7e2de640cf6b91cef7"></a><br/></td></tr>
<tr><td class="memItemLeft" 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_1WDoubleValidator.html#aa0cf3c02568e85e24105c073d8ee319b">invalidTooLargeText</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the message displayed when the number is too large. <a href="#aa0cf3c02568e85e24105c073d8ee319b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual std::string </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WDoubleValidator.html#aed2cd8b4dab3144c567a91a2a6c79011">javaScriptValidate</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a Javascript object that validates the input. <a href="#aed2cd8b4dab3144c567a91a2a6c79011"></a><br/></td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>A validator for validating floating point user input. </p>
<p>This validator checks whether user input is a double in the pre-defined range.</p>
<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>);
<a class="code" href="classWt_1_1WDoubleValidator.html" title="A validator for validating floating point user input.">Wt::WDoubleValidator</a> *validator = <span class="keyword">new</span> <a class="code" href="classWt_1_1WDoubleValidator.html#a60ac6a9c4da70a17daa84a41d04b87dd" title="Creates a new double validator that accepts any double.">Wt::WDoubleValidator</a>();
lineEdit-><a class="code" href="classWt_1_1WFormWidget.html#aa773d16013d6959149ce5081e84b259c" title="Sets a validator for this field.">setValidator</a>(validator);
lineEdit-><a class="code" href="classWt_1_1WLineEdit.html#addb99c6ab5483836adf44a2706a410af" title="Sets the content of the line edit.">setText</a>(<span class="stringliteral">"13.42"</span>);
</pre></div><h3>i18n</h3>
<p>The strings used in this class can be translated by overriding the default values for the following localization keys: Wt.WDoubleValidator.NotANumber: Must be a number Wt.WDoubleValidator.TooSmall: The number must be larger than {1} Wt.WDoubleValidator.BadRange: The number must be in the range {1} to {2} Wt.WDoubleValidator.TooLarge: The number must be smaller than {1} </p>
</div><hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a474314e509e47d2a577a26841fe4a752"></a><!-- doxytag: member="Wt::WDoubleValidator::invalidNotANumberText" ref="a474314e509e47d2a577a26841fe4a752" args="() const " -->
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<td class="memname"><a class="el" href="classWt_1_1WString.html">WString</a> Wt::WDoubleValidator::invalidNotANumberText </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
</tr>
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<div class="memdoc">
<p>Returns the message displayed when the input is not a number. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WDoubleValidator.html#a86e8f0e07b6c861af2e656575a329d47" title="Sets the message to display when the input is not a number.">setInvalidNotANumberText(const WString&)</a> </dd></dl>
</div>
</div>
<a class="anchor" id="aa0cf3c02568e85e24105c073d8ee319b"></a><!-- doxytag: member="Wt::WDoubleValidator::invalidTooLargeText" ref="aa0cf3c02568e85e24105c073d8ee319b" args="() const " -->
<div class="memitem">
<div class="memproto">
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<td class="memname"><a class="el" href="classWt_1_1WString.html">WString</a> Wt::WDoubleValidator::invalidTooLargeText </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Returns the message displayed when the number is too large. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WDoubleValidator.html#a6c3fa94752583d7e2de640cf6b91cef7" title="Sets the message to display when the number is too large.">setInvalidTooLargeText(const WString&)</a> </dd></dl>
</div>
</div>
<a class="anchor" id="a13fb51475bab73ea71405f6fa9158c6d"></a><!-- doxytag: member="Wt::WDoubleValidator::invalidTooSmallText" ref="a13fb51475bab73ea71405f6fa9158c6d" args="() const " -->
<div class="memitem">
<div class="memproto">
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<td class="memname"><a class="el" href="classWt_1_1WString.html">WString</a> Wt::WDoubleValidator::invalidTooSmallText </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
</tr>
</table>
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<div class="memdoc">
<p>Returns the message displayed when the number is too small. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WDoubleValidator.html#a119b5f1c2396f8d595c2607e76d27b1a" title="Sets the message to display when the number is too small.">setInvalidTooSmallText(const WString&)</a> </dd></dl>
</div>
</div>
<a class="anchor" id="aed2cd8b4dab3144c567a91a2a6c79011"></a><!-- doxytag: member="Wt::WDoubleValidator::javaScriptValidate" ref="aed2cd8b4dab3144c567a91a2a6c79011" args="() const " -->
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<td class="memname">std::string Wt::WDoubleValidator::javaScriptValidate </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const<code> [virtual]</code></td>
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<div class="memdoc">
<p>Creates a Javascript object that validates the input. </p>
<p>The JavaScript expression should evaluate to an object which contains a <code>validate(text)</code> function, which returns an object that contains the following two fields:</p>
<ul>
<li>fields: a boolean <em>valid</em>,</li>
<li>a <code>message</code> that indicates the problem if not valid.</li>
</ul>
<p>Returns an empty string if the validator does not provide a client-side validation implementationq.</p>
<dl class="note"><dt><b>Note:</b></dt><dd>The signature and contract changed changed in Wt 3.1.9.</dd></dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WValidator.html#a1ca29b7eaabf4c1655200ec382a84554" title="Returns a regular expression that filters input.">inputFilter()</a> </dd></dl>
<p>Reimplemented from <a class="el" href="classWt_1_1WValidator.html#a2aca1c34abaf4a35b972c3cf82ce1e48">Wt::WValidator</a>.</p>
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<a class="anchor" id="a520fe2f7859670b0c30144dbc4990e98"></a><!-- doxytag: member="Wt::WDoubleValidator::setBottom" ref="a520fe2f7859670b0c30144dbc4990e98" args="(double bottom)" -->
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<td class="memname">void Wt::WDoubleValidator::setBottom </td>
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<p>Sets the bottom of the valid double range. </p>
<p>The default value is the minimum double value. </p>
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<a class="anchor" id="a86e8f0e07b6c861af2e656575a329d47"></a><!-- doxytag: member="Wt::WDoubleValidator::setInvalidNotANumberText" ref="a86e8f0e07b6c861af2e656575a329d47" args="(const WString &text)" -->
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<td class="memname">void Wt::WDoubleValidator::setInvalidNotANumberText </td>
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<p>Sets the message to display when the input is not a number. </p>
<p>The default value is "Must be a number." </p>
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<a class="anchor" id="a6c3fa94752583d7e2de640cf6b91cef7"></a><!-- doxytag: member="Wt::WDoubleValidator::setInvalidTooLargeText" ref="a6c3fa94752583d7e2de640cf6b91cef7" args="(const WString &text)" -->
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<td class="memname">void Wt::WDoubleValidator::setInvalidTooLargeText </td>
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<p>Sets the message to display when the number is too large. </p>
<p>Depending on whether <a class="el" href="classWt_1_1WDoubleValidator.html#aa1f6b0952651e5503e6ff6657bd09180" title="Returns the bottom of the valid double range.">bottom()</a> and <a class="el" href="classWt_1_1WDoubleValidator.html#a708124404d7088f51f458bee1641288d" title="Returns the top of the valid double range.">top()</a> are real bounds, the default message is "The number must be between {1} and {2}" or "The number must be smaller than {2}". </p>
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<a class="anchor" id="a119b5f1c2396f8d595c2607e76d27b1a"></a><!-- doxytag: member="Wt::WDoubleValidator::setInvalidTooSmallText" ref="a119b5f1c2396f8d595c2607e76d27b1a" args="(const WString &text)" -->
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<td class="memname">void Wt::WDoubleValidator::setInvalidTooSmallText </td>
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<p>Sets the message to display when the number is too small. </p>
<p>Depending on whether <a class="el" href="classWt_1_1WDoubleValidator.html#aa1f6b0952651e5503e6ff6657bd09180" title="Returns the bottom of the valid double range.">bottom()</a> and <a class="el" href="classWt_1_1WDoubleValidator.html#a708124404d7088f51f458bee1641288d" title="Returns the top of the valid double range.">top()</a> are real bounds, the default message is "The number must be between {1} and {2}" or "The number must be larger than {1}". </p>
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<a class="anchor" id="a931cc4c5d0409093f4a6fd8ab023ee73"></a><!-- doxytag: member="Wt::WDoubleValidator::setTop" ref="a931cc4c5d0409093f4a6fd8ab023ee73" args="(double top)" -->
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<td class="memname">void Wt::WDoubleValidator::setTop </td>
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<td class="paramname"><em>top</em></td><td>)</td>
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<p>Sets the top of the valid double range. </p>
<p>The default value is the maximum double value. </p>
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<a class="anchor" id="a83572a7226b8c6a09b88d7b7ec17fcef"></a><!-- doxytag: member="Wt::WDoubleValidator::validate" ref="a83572a7226b8c6a09b88d7b7ec17fcef" args="(const WString &input) const " -->
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<td class="memname"><a class="el" href="classWt_1_1WValidator_1_1Result.html">WValidator::Result</a> Wt::WDoubleValidator::validate </td>
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<td class="paramname"><em>input</em></td><td>)</td>
<td> const<code> [virtual]</code></td>
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<p>Validates the given input. </p>
<p>The input is considered valid only when it is blank for a non-mandatory field, or represents a double within the valid range. </p>
<p>Reimplemented from <a class="el" href="classWt_1_1WValidator.html#a78808215d68944dedca11ff8889374ed">Wt::WValidator</a>.</p>
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