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<title>YUI Library Examples: Button Control: Simple Calendar Menu Button</title>
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<style>
/*Supplemental CSS for the YUI distribution*/
#custom-doc { width: 95%; min-width: 950px; }
#pagetitle {background-image: url(../../assets/bg_hd.gif);}
</style>
<link rel="stylesheet" type="text/css" href="../../assets/dpSyntaxHighlighter.css">
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<link rel="stylesheet" type="text/css" href="../../build/calendar/assets/skins/sam/calendar.css" />
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<script type="text/javascript" src="../../build/button/button-debug.js"></script>
<!--begin custom header content for this example-->
<style type="text/css">
/*
Set the "zoom" property to "normal" since it is set to "1" by the
".example-container .bd" rule in yui.css and this causes a Menu
instance's width to expand to 100% of the browser viewport.
*/
div.yuimenu .bd {
zoom: normal;
}
/*
Restore default padding of 10px for the calendar containtainer
that is overridden by the ".example-container .bd .bd" rule
in yui.css.
*/
#calendarcontainer {
padding:10px;
}
#calendarmenu {
position: absolute;
}
#calendarpicker button {
background: url(../button/assets/calendar_icon.gif) center center no-repeat;
text-align: left;
text-indent: -10em;
overflow: hidden;
*margin-left: 10em; /* For IE */
*padding: 0 3em; /* For IE */
white-space: nowrap;
}
#month-field,
#day-field {
width: 2em;
}
#year-field {
width: 3em;
}
#datefields {
border: solid 1px #666;
padding: .5em;
}
#calendarpicker {
vertical-align: baseline;
}
</style>
<!--end custom header content for this example-->
<script type="text/javascript">
//enable passthrough of errors from YUI Event:
if ((typeof YAHOO !== "undefined") && (YAHOO.util) && (YAHOO.util.Event)) {
YAHOO.util.Event.throwErrors = true;
}
</script>
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<div id="pagetitle"><h1>YUI Library Examples: Button Control: Simple Calendar Menu Button</h1></div>
</div>
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<div class="yui-b">
<div class="yui-ge">
<div class="yui-u first example">
<div class="promo">
<h1>Button Control: Simple Calendar Menu Button</h1>
<div class="exampleIntro">
<p>
This example demonstrates how to create a Menu Button whose Menu instance displays a Calendar.
</p>
</div>
<div class="example-container module ">
<div class="hd exampleHd">
<p class="newWindowButton yui-skin-sam"><!--<span id="newWindowLinkx"><span class="first-child">--><a href="btn_example09_clean.html" target="_blank">View example in new window.</a><!--</span></span>-->
</div> <div id="example-canvas" class="bd">
<!--BEGIN SOURCE CODE FOR EXAMPLE =============================== -->
<script type="text/javascript">
(function () {
var Event = YAHOO.util.Event,
Dom = YAHOO.util.Dom;
Event.onDOMReady(function () {
var oCalendarMenu;
var onButtonClick = function () {
// Create a Calendar instance and render it into the body
// element of the Overlay.
var oCalendar = new YAHOO.widget.Calendar("buttoncalendar", oCalendarMenu.body.id);
oCalendar.render();
// Subscribe to the Calendar instance's "select" event to
// update the month, day, year form fields when the user
// selects a date.
oCalendar.selectEvent.subscribe(function (p_sType, p_aArgs) {
var aDate;
if (p_aArgs) {
aDate = p_aArgs[0][0];
Dom.get("month-field").value = aDate[1];
Dom.get("day-field").value = aDate[2];
Dom.get("year-field").value = aDate[0];
}
oCalendarMenu.hide();
});
// Pressing the Esc key will hide the Calendar Menu and send focus back to
// its parent Button
Event.on(oCalendarMenu.element, "keydown", function (p_oEvent) {
if (Event.getCharCode(p_oEvent) === 27) {
oCalendarMenu.hide();
this.focus();
}
}, null, this);
var focusDay = function () {
var oCalendarTBody = Dom.get("buttoncalendar").tBodies[0],
aElements = oCalendarTBody.getElementsByTagName("a"),
oAnchor;
if (aElements.length > 0) {
Dom.batch(aElements, function (element) {
if (Dom.hasClass(element.parentNode, "today")) {
oAnchor = element;
}
});
if (!oAnchor) {
oAnchor = aElements[0];
}
// Focus the anchor element using a timer since Calendar will try
// to set focus to its next button by default
YAHOO.lang.later(0, oAnchor, function () {
try {
oAnchor.focus();
}
catch(e) {}
});
}
};
// Set focus to either the current day, or first day of the month in
// the Calendar when it is made visible or the month changes
oCalendarMenu.subscribe("show", focusDay);
oCalendar.renderEvent.subscribe(focusDay, oCalendar, true);
// Give the Calendar an initial focus
focusDay.call(oCalendar);
// Re-align the CalendarMenu to the Button to ensure that it is in the correct
// position when it is initial made visible
oCalendarMenu.align();
// Unsubscribe from the "click" event so that this code is
// only executed once
this.unsubscribe("click", onButtonClick);
};
// Create an Overlay instance to house the Calendar instance
oCalendarMenu = new YAHOO.widget.Overlay("calendarmenu", { visible: false });
// Create a Button instance of type "menu"
var oButton = new YAHOO.widget.Button({
type: "menu",
id: "calendarpicker",
label: "Choose A Date",
menu: oCalendarMenu,
container: "datefields" });
oButton.on("appendTo", function () {
// Create an empty body element for the Overlay instance in order
// to reserve space to render the Calendar instance into.
oCalendarMenu.setBody("&#32;");
oCalendarMenu.body.id = "calendarcontainer";
});
// Add a "click" event listener that will render the Overlay, and
// instantiate the Calendar the first time the Button instance is
// clicked.
oButton.on("click", onButtonClick);
});
}());
</script>
<div>
<form id="button-example-form" name="button-example-form" method="post">
<fieldset id="datefields">
<legend>Date</legend>
<label for="month-field">Month: </label> <input id="month-field" type="text" name="month">
<label for="day-field">Day:</label> <input id="day-field" type="text" name="day">
<label for="year-field">Year: </label> <input id="year-field" type="text" name="year">
</fieldset>
</form>
</div>
<!--END SOURCE CODE FOR EXAMPLE =============================== -->
</div>
</div>
</div>
<p>
Begin by defining an anonymous function in order to keep all variables out of the global scope.
Inside the anonymous function, define some shortcuts to utils that will be used frequently (Dom and
Event).
</p>
<textarea name="code" class="JScript" cols="60" rows="1">
(function () {
var Event = YAHOO.util.Event,
Dom = YAHOO.util.Dom;
}());
</textarea>
<p>
Inside the the anonymous function, use the <code>onDOMReady</code> method of the Event utility to
instantiate an Overlay and a Button when the page's DOM is ready to be scripted.
</p>
<textarea name="code" class="JScript" cols="60" rows="1">
Event.onDOMReady(function () {
var oCalendarMenu;
// Create an Overlay instance to house the Calendar instance
oCalendarMenu = new YAHOO.widget.Overlay("calendarmenu", { visible: false });
// Create a Button instance of type "menu"
var oButton = new YAHOO.widget.Button({
type: "menu",
id: "calendarpicker",
label: "Choose A Date",
menu: oCalendarMenu,
container: "datefields" });
});
</textarea>
<p>
Once the new Button is created, add a listener for its "appendTo" event that
will be used to render its Overlay instance into the same DOM element specified as the
containing element for the Button.
</p>
<textarea name="code" class="JScript" cols="60" rows="1">
oButton.on("appendTo", function () {
// Create an empty body element for the Overlay instance in order
// to reserve space to render the Calendar instance into.
oCalendarMenu.setBody("&#32;");
oCalendarMenu.body.id = "calendarcontainer";
});
</textarea>
<p>
Add a listener for the Button's "click" event that will be used to create a
new Calendar instance. (Defering the creation and rendering of the Calendar until the firing of
the "click" event improves the intial load time of the Button instance.)
</p>
<textarea name="code" class="JScript" cols="60" rows="1">
var onButtonClick = function () {
// Create a Calendar instance and render it into the body
// element of the Overlay.
var oCalendar = new YAHOO.widget.Calendar("buttoncalendar", oCalendarMenu.body.id);
oCalendar.render();
// Subscribe to the Calendar instance's "select" event to
// update the month, day, year form fields when the user
// selects a date.
oCalendar.selectEvent.subscribe(function (p_sType, p_aArgs) {
var aDate;
if (p_aArgs) {
aDate = p_aArgs[0][0];
Dom.get("month-field").value = aDate[1];
Dom.get("day-field").value = aDate[2];
Dom.get("year-field").value = aDate[0];
}
oCalendarMenu.hide();
});
// Pressing the Esc key will hide the Calendar Menu and send focus back to
// its parent Button
Event.on(oCalendarMenu.element, "keydown", function (p_oEvent) {
if (Event.getCharCode(p_oEvent) === 27) {
oCalendarMenu.hide();
this.focus();
}
}, null, this);
var focusDay = function () {
var oCalendarTBody = Dom.get("buttoncalendar").tBodies[0],
aElements = oCalendarTBody.getElementsByTagName("a"),
oAnchor;
if (aElements.length > 0) {
Dom.batch(aElements, function (element) {
if (Dom.hasClass(element.parentNode, "today")) {
oAnchor = element;
}
});
if (!oAnchor) {
oAnchor = aElements[0];
}
// Focus the anchor element using a timer since Calendar will try
// to set focus to its next button by default
YAHOO.lang.later(0, oAnchor, function () {
try {
oAnchor.focus();
}
catch(e) {}
});
}
};
// Set focus to either the current day, or first day of the month in
// the Calendar when it is made visible or the month changes
oCalendarMenu.subscribe("show", focusDay);
oCalendar.renderEvent.subscribe(focusDay, oCalendar, true);
// Give the Calendar an initial focus
focusDay.call(oCalendar);
// Re-align the CalendarMenu to the Button to ensure that it is in the correct
// position when it is initial made visible
oCalendarMenu.align();
// Unsubscribe from the "click" event so that this code is
// only executed once
this.unsubscribe("click", onButtonClick);
};
/*
Add a "click" event listener that will render the Overlay, and
instantiate the Calendar the first time the Button instance is
clicked.
*/
oButton.on("click", onButtonClick);
</textarea>
<p>
Lastly, style the Button with a calendar icon.
</p>
<textarea name="code" class="CSS" cols="60" rows="1">
#calendarpicker button {
background: url(../button/assets/calendar_icon.gif) center center no-repeat;
text-align: left;
text-indent: -10em;
overflow: hidden;
*margin-left: 10em; /* For IE */
*padding: 0 3em; /* For IE */
white-space: nowrap;
}
</textarea>
<h2>Configuration for This Example</h2>
<p>You can load the necessary JavaScript and CSS for this example from Yahoo's servers. <a href="http://developer.yahoo.com/yui/articles/hosting/?calendar&containercore&button&MIN#configure">Click here to load the YUI Dependency Configurator with all of this example's dependencies preconfigured</a>.</p>
</div>
<div class="yui-u">
<div id="loggerModule" class="yui-skin-sam">
<h3 class="firstContent">YUI Logger Output:</h3>
<div id="loggerDiv"></div>
<div id="loggerGloss">
<p><strong>Note:</strong> You are viewing this example in debug mode with logging enabled. This can significantly slow performance.</p>
<p class="loggerButton"><span id="loggerLink"><span class="first-child"><a href="btn_example09.html">Reload with logging<br />and debugging disabled.</a></span></span></p>
</div>
</div>
<div id="examples">
<h3>Button Control Examples:</h3>
<div id="exampleToc">
<ul>
<li><a href='../button/btn_example01.html'>Push Buttons</a></li><li><a href='../button/btn_example02.html'>Link Buttons</a></li><li><a href='../button/btn_example03.html'>Checkbox Buttons</a></li><li><a href='../button/btn_example04.html'>Radio Buttons</a></li><li><a href='../button/btn_example05.html'>Submit Buttons</a></li><li><a href='../button/btn_example06.html'>Reset Buttons</a></li><li><a href='../button/btn_example07.html'>Menu Buttons</a></li><li><a href='../button/btn_example08.html'>Split Buttons</a></li><li class='selected'><a href='../button/btn_example09.html'>Simple Calendar Menu Button</a></li><li><a href='../button/btn_example10.html'>Calendar Menu Button with Date on Button Face</a></li><li><a href='../button/btn_example11.html'>Color Picker Button</a></li><li><a href='../button/btn_example12.html'>Fixed Width Menu Button</a></li><li><a href='../button/btn_example13.html'>Glowing Button</a></li><li><a href='../button/btn_example14.html'>Slider Button</a></li><li><a href='../button/button-ariaplugin.html'>Using the Button ARIA Plugin</a></li><li><a href='../button/button-menu-select.html'>Using A Menu Button To Replace A &#60;select&#62; Element</a></li><li><a href='../button/button-menu-swap.html'>Replacing the content of a Button's Menu</a></li><li><a href='../autocomplete/ac_combobox.html'>Combobox, with CSS for Multiple Stacked Instances (included with examples for AutoComplete Control)</a></li><li><a href='../datatable/dt_colshowhide.html'>Showing, Hiding, and Reordering Columns. (included with examples for DataTable Control)</a></li><li><a href='../get/get-css-basic.html'>Getting CSS Style Sheets (included with examples for Get Utility)</a></li><li><a href='../layout/adv_layout.html'>Complex Application (included with examples for Layout Manager)</a></li> </ul>
</div>
</div>
<div id="module">
<h3>More Button Control Resources:</h3>
<ul>
<li><a href="http://developer.yahoo.com/yui/button/">User's Guide</a> (external)</li>
<li><a href="../../docs/module_button.html">API Documentation</a></li>
<li><a href="http://yuiblog.com/assets/pdf/cheatsheets/button.pdf">Cheat Sheet PDF</a> (external)</li></ul>
</div>
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