<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <title>Wt: Wt::WLengthValidator Class Reference</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <link href="doxygen.css" rel="stylesheet" type="text/css" /> <link href="search/search.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="search/search.js"></script> <script type="text/javascript"> $(document).ready(function() { searchBox.OnSelectItem(0); }); </script> </head> <body> <div id="top"><!-- do not remove this div! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">Wt  <span id="projectnumber">3.2.3</span> </div> </td> </tr> </tbody> </table> </div> <!-- Generated by Doxygen 1.7.5.1 --> <script type="text/javascript"> var searchBox = new SearchBox("searchBox", "search",false,'Search'); </script> <div id="navrow1" class="tabs"> <ul class="tablist"> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> <li><a href="modules.html"><span>Modules</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li class="current"><a href="annotated.html"><span>Classes</span></a></li> <li><a href="files.html"><span>Files</span></a></li> <li> <div id="MSearchBox" class="MSearchBoxInactive"> <span class="left"> <img id="MSearchSelect" src="search/mag_sel.png" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" alt=""/> <input type="text" id="MSearchField" value="Search" accesskey="S" onfocus="searchBox.OnSearchFieldFocus(true)" onblur="searchBox.OnSearchFieldFocus(false)" 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class="Wt::WLengthValidator" --><!-- doxytag: inherits="Wt::WValidator" --> <p>A validator that checks the string length of user input. <a href="classWt_1_1WLengthValidator.html#details">More...</a></p> <p><code>#include <Wt/WLengthValidator></code></p> <div class="dynheader"> Inheritance diagram for Wt::WLengthValidator:</div> <div class="dyncontent"> <div class="center"><img src="classWt_1_1WLengthValidator__inherit__graph.png" border="0" usemap="#Wt_1_1WLengthValidator_inherit__map" alt="Inheritance graph"/></div> <map name="Wt_1_1WLengthValidator_inherit__map" id="Wt_1_1WLengthValidator_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="24,80,133,107"/><area shape="rect" href="classWt_1_1WObject.html" title="A base class for objects that participate in the signal/slot system." alt="" coords="31,5,127,32"/></map> <center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div> <p><a href="classWt_1_1WLengthValidator-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="ad6ced22261c4dd0f249011a872c1ecbe"></a><!-- doxytag: member="Wt::WLengthValidator::WLengthValidator" ref="ad6ced22261c4dd0f249011a872c1ecbe" args="(WObject *parent=0)" -->  </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WLengthValidator.html#ad6ced22261c4dd0f249011a872c1ecbe">WLengthValidator</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 length validator that accepts input of any length. <br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aee3614e5244c8bdbd226a781e014d82d"></a><!-- doxytag: member="Wt::WLengthValidator::WLengthValidator" ref="aee3614e5244c8bdbd226a781e014d82d" args="(int minLength, int maxLength, WObject *parent=0)" -->  </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WLengthValidator.html#aee3614e5244c8bdbd226a781e014d82d">WLengthValidator</a> (int minLength, int maxLength, <a class="el" href="classWt_1_1WObject.html">WObject</a> *parent=0)</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a length validator that accepts input within a length 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_1WLengthValidator.html#a6a772dfac01805c714374fd290ff6e6d">setMinimumLength</a> (int minimum)</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the minimum length. <a href="#a6a772dfac01805c714374fd290ff6e6d"></a><br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WLengthValidator.html#a68dede1a5faa6d83f9347d8dde68f6d1">minimumLength</a> () const </td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the minimum length. <a href="#a68dede1a5faa6d83f9347d8dde68f6d1"></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_1WLengthValidator.html#a1f1742e015228319a10dd42a38ef79f4">setMaximumLength</a> (int maximum)</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the maximum length. <a href="#a1f1742e015228319a10dd42a38ef79f4"></a><br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WLengthValidator.html#a829f8c83606ed31a982e99fcd63b15fc">maximumLength</a> () const </td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the maximum length. <a href="#a829f8c83606ed31a982e99fcd63b15fc"></a><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_1WLengthValidator.html#a7037c50a29792374b729385d134b906e">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="#a7037c50a29792374b729385d134b906e"></a><br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a398750e14a071a4a7aff0d46d2266aaf"></a><!-- doxytag: member="Wt::WLengthValidator::createExtConfig" ref="a398750e14a071a4a7aff0d46d2266aaf" args="(std::ostream &config) const " --> virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WLengthValidator.html#a398750e14a071a4a7aff0d46d2266aaf">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_1WLengthValidator.html#a61299b45c89e93a8d7aa7f2570242286">setInvalidTooShortText</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 too short. <a href="#a61299b45c89e93a8d7aa7f2570242286"></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_1WLengthValidator.html#a39f2dd4516c2b53c84343d5adfe2f384">invalidTooShortText</a> () const </td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the message displayed when the input is too short. <a href="#a39f2dd4516c2b53c84343d5adfe2f384"></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_1WLengthValidator.html#aa24dd0a946f937e0dde081003bf30fec">setInvalidTooLongText</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 too long. <a href="#aa24dd0a946f937e0dde081003bf30fec"></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_1WLengthValidator.html#a5ba8fb18ad613678b7f744b05dda55cc">invalidTooLongText</a> () const </td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the message displayed when the input is too long. <a href="#a5ba8fb18ad613678b7f744b05dda55cc"></a><br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top">std::string </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WLengthValidator.html#ad146808a017f57c23b0cec6d1126f145">javaScriptValidate</a> () const </td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a Javascript object that validates the input. <a href="#ad146808a017f57c23b0cec6d1126f145"></a><br/></td></tr> </table> <hr/><a name="details" id="details"></a><h2>Detailed Description</h2> <div class="textblock"><p>A validator that checks the string length of user input. </p> <p>This validator checks whether user input is within the specified range of accepted string lengths.</p> <p>If you only want to limit the length on a line edit, you may also use <a class="el" href="classWt_1_1WLineEdit.html#aaeca334d8a47be029b6a44912b01ed5d" title="Specifies the maximum length of text that can be entered.">WLineEdit::setMaxLength()</a>.</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_1WLengthValidator.html" title="A validator that checks the string length of user input.">Wt::WLengthValidator</a> *validator = <span class="keyword">new</span> <a class="code" href="classWt_1_1WLengthValidator.html#ad6ced22261c4dd0f249011a872c1ecbe" title="Creates a length validator that accepts input of any length.">Wt::WLengthValidator</a>(5, 15); 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">"abcdef"</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:</p> <ul> <li>Wt.WLengthValidator.TooShort: The input must be at least {1} characters</li> <li>Wt.WLengthValidator.BadRange: The input must have a length between {1} and {2} characters</li> <li>Wt.WLengthValidator.TooLong: The input must be no more than {1} characters </li> </ul> </div><hr/><h2>Member Function Documentation</h2> <a class="anchor" id="a5ba8fb18ad613678b7f744b05dda55cc"></a><!-- doxytag: member="Wt::WLengthValidator::invalidTooLongText" ref="a5ba8fb18ad613678b7f744b05dda55cc" args="() const " --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="classWt_1_1WString.html">WString</a> Wt::WLengthValidator::invalidTooLongText </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 input is too long. </p> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WLengthValidator.html#aa24dd0a946f937e0dde081003bf30fec" title="Sets the message to display when the input is too long.">setInvalidTooLongText(const WString&)</a> </dd></dl> </div> </div> <a class="anchor" id="a39f2dd4516c2b53c84343d5adfe2f384"></a><!-- doxytag: member="Wt::WLengthValidator::invalidTooShortText" ref="a39f2dd4516c2b53c84343d5adfe2f384" args="() const " --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="classWt_1_1WString.html">WString</a> Wt::WLengthValidator::invalidTooShortText </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 input is too short. </p> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WLengthValidator.html#a61299b45c89e93a8d7aa7f2570242286" title="Sets the message to display when the input is too short.">setInvalidTooShortText(const WString&)</a> </dd></dl> </div> </div> <a class="anchor" id="ad146808a017f57c23b0cec6d1126f145"></a><!-- doxytag: member="Wt::WLengthValidator::javaScriptValidate" ref="ad146808a017f57c23b0cec6d1126f145" args="() const " --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">std::string Wt::WLengthValidator::javaScriptValidate </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const<code> [virtual]</code></td> </tr> </table> </div> <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> </div> </div> <a class="anchor" id="a829f8c83606ed31a982e99fcd63b15fc"></a><!-- doxytag: member="Wt::WLengthValidator::maximumLength" ref="a829f8c83606ed31a982e99fcd63b15fc" args="() const " --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int Wt::WLengthValidator::maximumLength </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const</td> </tr> </table> </div> <div class="memdoc"> <p>Returns the maximum length. </p> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WLengthValidator.html#a1f1742e015228319a10dd42a38ef79f4" title="Sets the maximum length.">setMaximumLength(int)</a> </dd></dl> </div> </div> <a class="anchor" id="a68dede1a5faa6d83f9347d8dde68f6d1"></a><!-- doxytag: member="Wt::WLengthValidator::minimumLength" ref="a68dede1a5faa6d83f9347d8dde68f6d1" args="() const " --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int Wt::WLengthValidator::minimumLength </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const</td> </tr> </table> </div> <div class="memdoc"> <p>Returns the minimum length. </p> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WLengthValidator.html#a6a772dfac01805c714374fd290ff6e6d" title="Sets the minimum length.">setMinimumLength(int)</a> </dd></dl> </div> </div> <a class="anchor" id="aa24dd0a946f937e0dde081003bf30fec"></a><!-- doxytag: member="Wt::WLengthValidator::setInvalidTooLongText" ref="aa24dd0a946f937e0dde081003bf30fec" args="(const WString &text)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void Wt::WLengthValidator::setInvalidTooLongText </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> </table> </div> <div class="memdoc"> <p>Sets the message to display when the input is too long. </p> <p>Depending on whether <a class="el" href="classWt_1_1WLengthValidator.html#a68dede1a5faa6d83f9347d8dde68f6d1" title="Returns the minimum length.">minimumLength()</a> is different from zero, the default message is "The input must have a length between {1} and {2} characters" or " "The input must be no more than {2} characters". </p> </div> </div> <a class="anchor" id="a61299b45c89e93a8d7aa7f2570242286"></a><!-- doxytag: member="Wt::WLengthValidator::setInvalidTooShortText" ref="a61299b45c89e93a8d7aa7f2570242286" args="(const WString &text)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void Wt::WLengthValidator::setInvalidTooShortText </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> </table> </div> <div class="memdoc"> <p>Sets the message to display when the input is too short. </p> <p>Depending on whether <a class="el" href="classWt_1_1WLengthValidator.html#a829f8c83606ed31a982e99fcd63b15fc" title="Returns the maximum length.">maximumLength()</a> is a real bound, the default message is "The input must have a length between {1} and {2} characters" or " "The input must be at least {1} characters". </p> </div> </div> <a class="anchor" id="a1f1742e015228319a10dd42a38ef79f4"></a><!-- doxytag: member="Wt::WLengthValidator::setMaximumLength" ref="a1f1742e015228319a10dd42a38ef79f4" args="(int maximum)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void Wt::WLengthValidator::setMaximumLength </td> <td>(</td> <td class="paramtype">int </td> <td class="paramname"><em>maximum</em></td><td>)</td> <td></td> </tr> </table> </div> <div class="memdoc"> <p>Sets the maximum length. </p> <p>The default value is the maximum integer value. </p> </div> </div> <a class="anchor" id="a6a772dfac01805c714374fd290ff6e6d"></a><!-- doxytag: member="Wt::WLengthValidator::setMinimumLength" ref="a6a772dfac01805c714374fd290ff6e6d" args="(int minimum)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void Wt::WLengthValidator::setMinimumLength </td> <td>(</td> <td class="paramtype">int </td> <td class="paramname"><em>minimum</em></td><td>)</td> <td></td> </tr> </table> </div> <div class="memdoc"> <p>Sets the minimum length. </p> <p>The default value is 0. </p> </div> </div> <a class="anchor" id="a7037c50a29792374b729385d134b906e"></a><!-- doxytag: member="Wt::WLengthValidator::validate" ref="a7037c50a29792374b729385d134b906e" args="(const WString &input) const " --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="classWt_1_1WValidator_1_1Result.html">WValidator::Result</a> Wt::WLengthValidator::validate </td> <td>(</td> <td class="paramtype">const <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> </tr> </table> </div> <div class="memdoc"> <p>Validates the given input. </p> <p>The input is considered valid only when it is blank for a non-mandatory field, or has a length within the valid range. </p> <p>Reimplemented from <a class="el" href="classWt_1_1WValidator.html#a78808215d68944dedca11ff8889374ed">Wt::WValidator</a>.</p> </div> </div> </div> <!-- window showing the filter options --> <div id="MSearchSelectWindow" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" onkeydown="return searchBox.OnSearchSelectKey(event)"> <a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Classes</a><a class="SelectItem" href="javascript:void(0)" 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