demo.html

---
layout: example
title: demo
---
<style scoped="scoped">
	form input, form textarea, form select, form button
	{
		display: block;
	}

	input, textarea, select
	{
		min-width: 20em;
	}

	input[type=radio], input[type=checkbox]
	{
		min-width: 2em;
	}

	input[type=radio], input[type=checkbox]
	{
		display: inline;
	}

	kbd
	{
		border-width: 2px;
		border-style: outset;
		padding: 1px;
		background-color: #eee;
	}

	.border
	{
		padding: 0.3em;
		border: 1px dotted #999;
	}
</style>
<p>
	Sometimes it can be useful to programatically emulate/simulate the effect of pressing
	the <kbd>tab</kbd> key. Examples include <a href="https://github.com/joelpurra/skipontab">
		using <kbd>tab</kbd> to skip over less used form fields</a>, another to <a href="https://github.com/joelpurra/plusastab">
			use the <kbd>+</kbd> on the keypad as a new tab key</a>.
</p>
<p>
	This demo allows comparing EmulateTab to the browser you are using. Try to <kbd>tab</kbd>
	and <kbd>shift</kbd>-<kbd>tab</kbd> through the fields. Then start the emulated
	tabbing that runs on a timer.
</p>
<p>
	Note that using the <em>mouse</em> to click on a button, checkbox or radio button
	may cause the browser to <em>unfocus</em> (blur) the current selection. Since there
	is no selected element, tabbing would then restart at the top of the page.
</p>
<fieldset>
	<legend>Demo controls</legend>
	<button id="enable-auto-navigation" type="button" autofocus="autofocus">
		Enable auto navigation</button>
	<button id="disable-auto-navigation" type="button">
		Disable auto navigation</button>
	<label>
		<input id="auto-navigation-reverse" type="checkbox" />
		Reverse</label>
	<label>
		<input id="auto-navigation-interval" type="number" min="0" max="2000" step="10" />
		Interval</label>
</fieldset>
<form>
<fieldset>
	<legend>A bunch of random form elements for demo purposes</legend>
	<input type="text" value="Textbox" />
	<textarea>Textarea</textarea>
	<a href="http://joelpurra.se/">Joel Purra</a>
	<input type="submit" value="Input type submit" />
	<ol>
		<li>
			<label>
				<input type="checkbox" />
				Checkbox</label></li>
		<li>
			<label>
				<input type="checkbox" />
				Another textbox</label></li>
	</ol>
	<select>
		<option>Drop down with two options</option>
		<option>Another option</option>
	</select>
	<a>Anchors without <code>href</code> are always skipped by the browser</a>
	<div class="border">
		<button type="submit">
			Inside container</button>
		<div class="border">
			<button type="submit">
				Inside subcontainer to container</button>
		</div>
		<button type="submit">
			Inside container</button>
	</div>
	<select multiple="multiple">
		<option>First</option>
		<option>Second</option>
		<option>Third</option>
	</select>
	<fieldset>
		<legend>First part of radio group 1</legend>
		<label>
			<input type="radio" name="radiogroup1" />
			First</label>
		<label>
			<input type="radio" name="radiogroup1" />
			Second</label>
		<label>
			<input type="radio" name="radiogroup1" />
			Third</label>
	</fieldset>
	<input type="text" value="Textbox" />
	<fieldset>
		<legend>Second part of radio group 1</legend>
		<label>
			<input type="radio" name="radiogroup1" />
			Fourth</label>
		<label>
			<input type="radio" name="radiogroup1" />
			Fifth</label>
		<label>
			<input type="radio" name="radiogroup1" />
			Sixth</label>
	</fieldset>
	<input type="text" value="Textbox" />
	<fieldset>
		<legend>Radio group 2 mixed with the third part of radio group 1</legend>
		<label>
			<input type="radio" name="radiogroup2" />
			First</label>
		<label>
			<input type="radio" name="radiogroup1" />
			Seventh</label>
		<label>
			<input type="radio" name="radiogroup2" />
			Third</label>
	</fieldset>
	<button id="click-to-add-checkbox" type="button">
		Click to add checkbox after button</button>
	<p>
		Tabbing past here will usually put focus in the address bar of the browser, but
		the emulation will put focus at the top of the page. The emulation is not overriding
		default behavior, it is extending it. Also, javascript cannot control focus of the
		browser address
	</p>
</fieldset>
</form>
<script src="../bower_components/jquery/jquery.js"></script>
<script src="../dist/emulatetab.joelpurra.js"></script>
<script>
//<![CDATA[

	var
			intervalId,
			defaultInterval = 500;

	$("#auto-navigation-interval")
			.val(defaultInterval);

	$("form")
			.submit(simulateSubmitting);

	$("#enable-auto-navigation")
			.click(enableAutoNavigation);

	$("#disable-auto-navigation")
			.click(disableAutoNavigation);

	$("#click-to-add-checkbox")
			.click(addCheckboxAfter);

	function autoNavigate()
	{
		var reverse = $("#auto-navigation-reverse").is(":checked");

		$.emulateTab(reverse ? -1 : +1);
	}

	function enableAutoNavigation()
	{
		disableAutoNavigation();

		var interval = parseInt($("#auto-navigation-interval").val());

		if (!$.isNumeric(interval))
		{
			interval = defaultInterval;
		}

		intervalId = setInterval(autoNavigate, interval);
	}

	function disableAutoNavigation()
	{
		clearInterval(intervalId);
	}

	function addCheckboxAfter(event)
	{
		var $target = $(event.target);

		var $checkbox = $('<input />')
								.attr("type", "checkbox");

		$checkbox.insertAfter($target);

		$target.focus();
	}

	function simulateSubmitting(event)
	{
		event.preventDefault();

		if (confirm("Simulating that the form has been submitted.\n\nWould you like to reload the page?"))
		{
			location.reload();
		}

		return false;
	}
//]]>
</script>