JQuery DatePicker bundled control can't be included in other controls
https://stackoverflow.com/questions/255071
-
05-07-2019 - |
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I've been tasked with implementing a Date/Time selector for several areas of our web project, and instructed to use a control that another developer created as part of it. The control I'm working on is supposed to allow the user to choose a date from a calendar, choose a format for the display of that date (from several pre-defined formats, or with a simple text override) and optionally a time string (which is really just freeform text).
The control I was instructed to use is documented here: http://www.west-wind.com/WebLog/posts/213015.aspx, and uses the DatePicker from jQuery.
After I implemented my control and tested it, I began integrating it into the pages which needed Date and/or time inputs. In my testing of those implementations, I discovered a bug: when I include multiple copies of my control on a page, only the first one gets the jQuery calendar. The others are not tied to it.
I have tried some of the methods suggested in a seemingly-related question (titled 'duplicating jquery datepicker'), such as calling the '.datepicker()' function on the west-wind control (which renders a textbox) via the $("css-selector").datepicker() syntax, and ASP.NET is guaranteeing unique IDs for all the text boxes.
So, in summation, it looks like this:
<page>
<mycontrol>
<west-windjQuerycontrol />
</mycontrol>
<mycontrol>
<west-windjQuerycontrol />
</mycontrol>
</page>
Now, the strange part: When there are multiple copies of the west-wind control on the page, without the other user control containing them, they work correctly. Other than the jQuery control, my control has nothing unusual about it: simply labels, textboxes, panels, and dropdowns. Something about bundling the West-Wind jQuery control into a user control seems to be breaking it.
Any advice? I've been banging my head against this for a while, hampered by my poor javascript skills and limited exposure to jQuery.
As pointed out below, it's hard to say without the HTML. I've included it below.
<form name="form1" method="post" action="ControlTest.aspx" id="form1">
<div>
<input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" />
<input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" />
<input type="hidden" name="__LASTFOCUS" id="__LASTFOCUS" value="" />
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUKLTU4NjEzMDEwOQ9kFgICAw9kFgQCAw9kFgRmD2QWAgIDD2QWAgIDDxBkZBYBZmQCAg9kFgICAw9kFgICAQ8QZGQWAWZkAgUPZBYEZg9kFgICAw9kFgICAw8QZGQWAWZkAgIPZBYCAgMPZBYCAgEPEGRkFgFmZGRDjfLpdb+XxaVaQYP2XkPil2Galw==" />
</div>
<script type="text/javascript">
//<![CDATA[
var theForm = document.forms['form1'];
if (!theForm) {
theForm = document.form1;
}
function __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();
}
}
//]]>
</script>
<script src="/SSO/DE/WebResource.axd?d=jMPpL-KK8_mPj_ssZzGblw2&t=633481894229838141" type="text/javascript"></script>
<script src="/SSO/DE/ScriptResource.axd?d=8KwRIGaNAD3hi2Loz3YV-uxgrdZpGe8nnwH5E3gxLW_lQpnYjRbyIYThTnHtD9rt0&t=633613004148118290" type="text/javascript"></script>
<script src="/SSO/DE/ScriptResource.axd?d=8KwRIGaNAD3hi2Loz3YV-uxgrdZpGe8nnwH5E3gxLW-K0Kuw-pGK1O3mE_r1y3sjKmhHtQjSXeMtYSim0bjyGA2&t=633613004148118290" type="text/javascript"></script>
<script src="/SSO/DE/ScriptResource.axd?d=Id5yAacLMZHF7TWlkgrrid30ZStmsXuLHcF6WQ404YLySP4Itj4qxv2wi9ffbsWQA86oLdnZPWkwDnu4NKxfG1Ue7qdGG1SbOfb4ooHVs7M1&t=633481957084709567" type="text/javascript"></script>
<script type="text/javascript">
//<![CDATA[
if (typeof(Sys) === 'undefined') throw new Error('ASP.NET Ajax client-side framework failed to load.');
//]]>
</script>
<script src="/SSO/DE/ScriptResource.axd?d=Id5yAacLMZHF7TWlkgrrid30ZStmsXuLHcF6WQ404YLySP4Itj4qxv2wi9ffbsWQhT3MFELBAa2rFJZXnSlYAZIN7RT1npcBxJRsWGjJWIwTF0Es1m0vOd-xYnFqWJKz0&t=633481957084709567" type="text/javascript"></script>
<div style="margin:25px 10px;width:100%;">
<script type="text/javascript">
//<![CDATA[
Sys.WebForms.PageRequestManager._initialize('stupidThing', document.getElementById('form1'));
Sys.WebForms.PageRequestManager.getInstance()._updateControls([], [], [], 90);
//]]>
</script>
<div id="datePicker_Div0" class="AdminRowOdd DERow">
<div id="datePicker_Div1" class="DELabel">
<span id="datePicker_DateLabel">Date</span>
</div>
<div id="datePicker_Div2" class="DEInput datePicker">
<input name="datePicker$DateSelector" type="text" onchange="javascript:setTimeout('__doPostBack(\'datePicker$DateSelector\',\'\')', 0)" onkeypress="if (WebForm_TextBoxKeyHandler(event) == false) return false;" id="datePicker_DateSelector" style="width:80px;" />
<select name="datePicker$languageSelector" onchange="javascript:setTimeout('__doPostBack(\'datePicker$languageSelector\',\'\')', 0)" id="datePicker_languageSelector">
<option selected="selected" value="en-US">en-US</option>
<option value="fr-CA">fr-CA</option>
<option value="fr-FR">fr-FR</option>
<option value="es-ES">es-ES</option>
<option value="es-MX">es-MX</option>
</select>
</div>
</div>
<div id="datePicker_Div3" class="AdminRowEven DERow">
<div id="datePicker_Div4" class="DELabel">
<span id="datePicker_FormatChoiceLabel">Choose your display format: </span>
</div>
<div id="datePicker_Div5" class="DEInput">
<select name="datePicker$DateFormatSelector" onchange="javascript:setTimeout('__doPostBack(\'datePicker$DateFormatSelector\',\'\')', 0)" id="datePicker_DateFormatSelector">
<option selected="selected" value="Choose a date first">Choose a date first</option>
</select>
</div>
</div>
<div id="datePicker_Div6" class="AdminRowOdd DERow">
<div id="datePicker_Div7" class="DELabel">
<span id="datePicker_FormatOverrideLabel">Or enter your own text</span>
</div>
<div id="datePicker_Div8" class="DEInput">
<input name="datePicker$DateFormatOverride" type="text" onchange="javascript:setTimeout('__doPostBack(\'datePicker$DateFormatOverride\',\'\')', 0)" onkeypress="if (WebForm_TextBoxKeyHandler(event) == false) return false;" id="datePicker_DateFormatOverride" />
</div>
</div>
<br />
<div id="date1_Div0" class="AdminRowOdd DERow">
<div id="date1_Div1" class="DELabel">
<span id="date1_DateLabel">Date</span>
</div>
<div id="date1_Div2" class="DEInput datePicker">
<input name="date1$DateSelector" type="text" onchange="javascript:setTimeout('__doPostBack(\'date1$DateSelector\',\'\')', 0)" onkeypress="if (WebForm_TextBoxKeyHandler(event) == false) return false;" id="date1_DateSelector" style="width:80px;" />
<select name="date1$languageSelector" onchange="javascript:setTimeout('__doPostBack(\'date1$languageSelector\',\'\')', 0)" id="date1_languageSelector">
<option selected="selected" value="en-US">en-US</option>
<option value="fr-CA">fr-CA</option>
<option value="fr-FR">fr-FR</option>
<option value="es-ES">es-ES</option>
<option value="es-MX">es-MX</option>
</select>
</div>
</div>
<div id="date1_Div3" class="AdminRowEven DERow">
<div id="date1_Div4" class="DELabel">
<span id="date1_FormatChoiceLabel">Choose your display format:</span>
</div>
<div id="date1_Div5" class="DEInput">
<select name="date1$DateFormatSelector" onchange="javascript:setTimeout('__doPostBack(\'date1$DateFormatSelector\',\'\')', 0)" id="date1_DateFormatSelector">
<option selected="selected" value="Choose a date first">Choose a date first</option>
</select>
</div>
</div>
<div id="date1_Div6" class="AdminRowOdd DERow">
<div id="date1_Div7" class="DELabel">
<span id="date1_FormatOverrideLabel">Or enter your own text</span>
</div>
<div id="date1_Div8" class="DEInput">
<input name="date1$DateFormatOverride" type="text" onchange="javascript:setTimeout('__doPostBack(\'date1$DateFormatOverride\',\'\')', 0)" onkeypress="if (WebForm_TextBoxKeyHandler(event) == false) return false;" id="date1_DateFormatOverride" />
</div>
</div>
</div>
<div>
<input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEWFQLr6MeTCwKb1Zr0AwKVt6utCQKIwaTjAQKdwYzzBwLiwsDhDQKIwdCLBAKHwbCtCgLRr42cCQKi9vj4DgK2lM6kBQLLrsUtAsaboRMC2+2u3QgCzu2GzQ4Cse7K3wQC2+3atQ0C1O26kwMCpdTivwwC1o2X2wsCoubqnQk8I1BK30Q/iVw/rExUww2Cs4bicw==" />
</div>
<script type="text/javascript">
//<![CDATA[
jQuery(document).ready( function() {
var cal = jQuery('#datePicker_DateSelector').datepicker({yearRange: '-1500:+100',dateFormat: 'm/d/yy'});
} );
Sys.Application.initialize();
//]]>
</script>
</form>
Solution
Hard to know without seeing the generated HTML, but my first guess would be that your control isn't applying class names directly to the <input> field... or you are depending on ids in some way (which would likely change when embedded in a user control).
In the HTML you've posted, these appear to three relevant portions:
Block #1 (control: datePicker)
<div id="datePicker_Div0" class="AdminRowOdd DERow">
<div id="datePicker_Div1" class="DELabel">
<span id="datePicker_DateLabel">Date</span>
</div>
<div id="datePicker_Div2" class="DEInput datePicker">
<input name="datePicker$DateSelector" type="text"
onchange="javascript:setTimeout('__doPostBack(\'datePicker$DateSelector\',\'\')', 0)"
onkeypress="if (WebForm_TextBoxKeyHandler(event) == false) return false;"
id="datePicker_DateSelector" style="width:80px;" />
<select name="datePicker$languageSelector"
onchange="javascript:setTimeout('__doPostBack(\'datePicker$languageSelector\',\'\')', 0)"
id="datePicker_languageSelector">
<option selected="selected" value="en-US">en-US</option>
<option value="fr-CA">fr-CA</option>
<option value="fr-FR">fr-FR</option>
<option value="es-ES">es-ES</option>
<option value="es-MX">es-MX</option>
</select>
</div>
</div>
...
Block #2 (control: date1)
<div id="date1_Div0" class="AdminRowOdd DERow">
<div id="date1_Div1" class="DELabel">
<span id="date1_DateLabel">Date</span>
</div>
<div id="date1_Div2" class="DEInput datePicker">
<input name="date1$DateSelector" type="text"
onchange="javascript:setTimeout('__doPostBack(\'date1$DateSelector\',\'\')', 0)"
onkeypress="if (WebForm_TextBoxKeyHandler(event) == false) return false;"
id="date1_DateSelector" style="width:80px;" />
<select name="date1$languageSelector"
onchange="javascript:setTimeout('__doPostBack(\'date1$languageSelector\',\'\')', 0)"
id="date1_languageSelector">
<option selected="selected" value="en-US">en-US</option>
<option value="fr-CA">fr-CA</option>
<option value="fr-FR">fr-FR</option>
<option value="es-ES">es-ES</option>
<option value="es-MX">es-MX</option>
</select>
</div>
</div>
...
Block #3 (jQuery datepicker wireup)
<script type="text/javascript">
//<![CDATA[
jQuery(document).ready( function()
{
// matches input element for first control only (id selector)
var cal = jQuery('#datePicker_DateSelector')
.datepicker({yearRange: '-1500:+100',dateFormat: 'm/d/yy'});
});
Sys.Application.initialize();
//]]>
</script>
The problem arises from this last block. The selector is specific to the first control, matching by ID. If it was modified to include a separate call for the second control...
var cal = jQuery('#datePicker_DateSelector')
.datepicker({yearRange: '-1500:+100',dateFormat: 'm/d/yy'});
var cal2 = jQuery('#date1_DateSelector')
.datepicker({yearRange: '-1500:+100',dateFormat: 'm/d/yy'});
...or a more general-purpose selector...
// matches all text input elements that are descendants of
// a div element with a class of datePicker
var cal = jQuery('div.datePicker input:text')
.datepicker({yearRange: '-1500:+100',dateFormat: 'm/d/yy'});
...then things should work as expected.
OTHER TIPS
I figured out the problem.
The OnPreRender() of the server control builds the javascript found above, the calls the following, where sbStartupScript is a StringBuilder which contains the generated javascript:
sbStartupScript.AppendLine("} );");
scriptProxy.RegisterStartupScript(this.Page, typeof(ControlResources), "_cal" + this.ID,
sbStartupScript.ToString(), true);
The correct form should have been:
sbStartupScript.AppendLine("} );");
scriptProxy.RegisterStartupScript(this.Page, typeof(ControlResources), "_cal" + this.ClientID,
sbStartupScript.ToString(), true);
Now, having the ClientId, the script name is unique, and both will render.
