Yoshi2889 / SMF2.1

Themes/default/Calendar.template.php

<?php
/**
 * Simple Machines Forum (SMF)
 *
 * @package SMF
 * @author Simple Machines https://www.simplemachines.org
 * @copyright 2020 Simple Machines and individual contributors
 * @license https://www.simplemachines.org/about/smf/license.php BSD
 *
 * @version 2.1 RC2
 */

/**
 * Our main calendar template, which encapsulates weeks and months.
 */
function template_main()
{
	global $context;

	// The main calendar wrapper.
	echo '
		<div id="calendar">';

	// Show the mini-blocks if they're enabled.
	if (empty($context['blocks_disabled']))
		echo '
			<div id="month_grid">
				', template_show_month_grid('prev', true), '
				', template_show_month_grid('current', true), '
				', template_show_month_grid('next', true), '
			</div>';

	// What view are we showing?
	if ($context['calendar_view'] == 'viewlist')
		echo '
			<div id="main_grid">
				', template_show_upcoming_list('main'), '
			</div>';
	elseif ($context['calendar_view'] == 'viewweek')
		echo '
			<div id="main_grid">
				', template_show_week_grid('main'), '
			</div>';
	else
		echo '
			<div id="main_grid">
				', template_show_month_grid('main'), '
			</div>';

	// Close our wrapper.
	echo '
		</div><!-- #calendar -->';
}

/**
 * Display a list of upcoming events, birthdays, and holidays.
 *
 * @param string $grid_name The grid name
 * @return void|bool Returns false if the grid doesn't exist.
 */
function template_show_upcoming_list($grid_name)
{
	global $context, $scripturl, $txt;

	// Bail out if we have nothing to work with
	if (!isset($context['calendar_grid_' . $grid_name]))
		return false;

	// Protect programmer sanity
	$calendar_data = &$context['calendar_grid_' . $grid_name];

	// Do we want a title?
	if (empty($calendar_data['disable_title']))
		echo '
			<div class="cat_bar">
				<h3 class="catbg centertext largetext">
					<a href="', $scripturl, '?action=calendar;viewlist;year=', $calendar_data['start_year'], ';month=', $calendar_data['start_month'], ';day=', $calendar_data['start_day'], '">', $txt['calendar_upcoming'], '</a>
				</h3>
			</div>';

	// Give the user some controls to work with
	template_calendar_top($calendar_data);

	// Output something just so people know it's not broken
	if (empty($calendar_data['events']) && empty($calendar_data['birthdays']) && empty($calendar_data['holidays']))
		echo '
			<div class="descbox">', $txt['calendar_empty'], '</div>';

	// First, list any events
	if (!empty($calendar_data['events']))
	{
		echo '
			<div>
				<div class="title_bar">
					<h3 class="titlebg">', str_replace(':', '', $txt['events']), '</h3>
				</div>
				<ul>';

		foreach ($calendar_data['events'] as $date => $date_events)
		{
			foreach ($date_events as $event)
			{
				echo '
					<li class="windowbg">
						<strong class="event_title">', $event['link'], '</strong>';

				if ($event['can_edit'])
					echo ' <a href="' . $event['modify_href'] . '"><span class="main_icons calendar_modify" title="', $txt['calendar_edit'], '"></span></a>';

				if ($event['can_export'])
					echo ' <a href="' . $event['export_href'] . '"><span class="main_icons calendar_export" title="', $txt['calendar_export'], '"></span></a>';

				echo '
						<br>';

				if (!empty($event['allday']))
				{
					echo '<time datetime="' . $event['start_iso_gmdate'] . '">', trim($event['start_date_local']), '</time>', ($event['start_date'] != $event['end_date']) ? ' &ndash; <time datetime="' . $event['end_iso_gmdate'] . '">' . trim($event['end_date_local']) . '</time>' : '';
				}
				else
				{
					// Display event info relative to user's local timezone
					echo '<time datetime="' . $event['start_iso_gmdate'] . '">', trim($event['start_date_local']), ', ', trim($event['start_time_local']), '</time> &ndash; <time datetime="' . $event['end_iso_gmdate'] . '">';

					if ($event['start_date_local'] != $event['end_date_local'])
						echo trim($event['end_date_local']) . ', ';

					echo trim($event['end_time_local']);

					// Display event info relative to original timezone
					if ($event['start_date_local'] . $event['start_time_local'] != $event['start_date_orig'] . $event['start_time_orig'])
					{
						echo '</time> (<time datetime="' . $event['start_iso_gmdate'] . '">';

						if ($event['start_date_orig'] != $event['start_date_local'] || $event['end_date_orig'] != $event['end_date_local'] || $event['start_date_orig'] != $event['end_date_orig'])
							echo trim($event['start_date_orig']), ', ';

						echo trim($event['start_time_orig']), '</time> &ndash; <time datetime="' . $event['end_iso_gmdate'] . '">';

						if ($event['start_date_orig'] != $event['end_date_orig'])
							echo trim($event['end_date_orig']) . ', ';

						echo trim($event['end_time_orig']), ' ', $event['tz_abbrev'], '</time>)';
					}
					// Event is scheduled in the user's own timezone? Let 'em know, just to avoid confusion
					else
						echo ' ', $event['tz_abbrev'], '</time>';
				}

				if (!empty($event['location']))
					echo '<br>', $event['location'];

				echo '
					</li>';
			}
		}

		echo '
				</ul>
			</div>';
	}

	// Next, list any birthdays
	if (!empty($calendar_data['birthdays']))
	{
		echo '
			<div>
				<div class="title_bar">
					<h3 class="titlebg">', str_replace(':', '', $txt['birthdays']), '</h3>
				</div>
				<div class="windowbg">';

		foreach ($calendar_data['birthdays'] as $date)
		{
			echo '
					<p class="inline">
						<strong>', $date['date_local'], '</strong>: ';

			unset($date['date_local']);

			$birthdays = array();

			foreach ($date as $member)
				$birthdays[] = '<a href="' . $scripturl . '?action=profile;u=' . $member['id'] . '">' . $member['name'] . (isset($member['age']) ? ' (' . $member['age'] . ')' : '') . '</a>';

			echo implode(', ', $birthdays);

			echo '
					</p>';
		}

		echo '
				</div><!-- .windowbg -->
			</div>';
	}

	// Finally, list any holidays
	if (!empty($calendar_data['holidays']))
	{
		echo '
			<div>
				<div class="title_bar">
					<h3 class="titlebg">', str_replace(':', '', $txt['calendar_prompt']), '</h3>
				</div>
				<div class="windowbg">
					<p class="inline holidays">';

		$holidays = array();

		foreach ($calendar_data['holidays'] as $date)
		{
			$date_local = $date['date_local'];
			unset($date['date_local']);

			foreach ($date as $holiday)
				$holidays[] = $holiday . ' (' . $date_local . ')';
		}

		echo implode(', ', $holidays);

		echo '
					</p>
				</div><!-- .windowbg -->
			</div>';
	}
}

/**
 * Display a monthly calendar grid.
 *
 * @param string $grid_name The grid name
 * @param bool $is_mini Is this a mini grid?
 * @return void|bool Returns false if the grid doesn't exist.
 */
function template_show_month_grid($grid_name, $is_mini = false)
{
	global $context, $txt, $scripturl, $modSettings;

	// If the grid doesn't exist, no point in proceeding.
	if (!isset($context['calendar_grid_' . $grid_name]))
		return false;

	// A handy little pointer variable.
	$calendar_data = &$context['calendar_grid_' . $grid_name];

	// Some conditions for whether or not we should show the week links *here*.
	if (isset($calendar_data['show_week_links']) && ($calendar_data['show_week_links'] == 3 || (($calendar_data['show_week_links'] == 1 && $is_mini === true) || $calendar_data['show_week_links'] == 2 && $is_mini === false)))
		$show_week_links = true;
	else
		$show_week_links = false;

	// Assuming that we've not disabled it, show the title block!
	if (empty($calendar_data['disable_title']))
	{
		echo '
			<div class="cat_bar">
				<h3 class="catbg centertext largetext">';

		// Previous Link: If we're showing prev / next and it's not a mini-calendar.
		if (empty($calendar_data['previous_calendar']['disabled']) && $calendar_data['show_next_prev'] && $is_mini === false)
			echo '
					<span class="floatleft">
						<a href="', $calendar_data['previous_calendar']['href'], '">&#171;</a>
					</span>';

		// Next Link: if we're showing prev / next and it's not a mini-calendar.
		if (empty($calendar_data['next_calendar']['disabled']) && $calendar_data['show_next_prev'] && $is_mini === false)
			echo '
					<span class="floatright">
						<a href="', $calendar_data['next_calendar']['href'], '">&#187;</a>
					</span>';

		// Arguably the most exciting part, the title!
		echo '
					<a href="', $scripturl, '?action=calendar;', $context['calendar_view'], ';year=', $calendar_data['current_year'], ';month=', $calendar_data['current_month'], ';day=', $calendar_data['current_day'], '">', $txt['months_titles'][$calendar_data['current_month']], ' ', $calendar_data['current_year'], '</a>
				</h3>
			</div><!-- .cat_bar -->';
	}

	// Show the controls on main grids
	if ($is_mini === false)
		template_calendar_top($calendar_data);

	// Finally, the main calendar table.
	echo '
			<table class="calendar_table">';

	// Show each day of the week.
	if (empty($calendar_data['disable_day_titles']))
	{
		echo '
				<tr>';

		// If we're showing week links, there's an extra column ahead of the week links, so let's think ahead and be prepared!
		if ($show_week_links === true)
			echo '
					<th></th>';

		// Now, loop through each actual day of the week.
		foreach ($calendar_data['week_days'] as $day)
			echo '
					<th class="days" scope="col">', !empty($calendar_data['short_day_titles']) || $is_mini === true ? $txt['days_short'][$day] : $txt['days'][$day], '</th>';

		echo '
				</tr>';
	}

	// Our looping begins on a per-week basis.
	foreach ($calendar_data['weeks'] as $week)
	{
		// Some useful looping variables.
		$current_month_started = false;
		$count = 1;
		$final_count = 1;

		echo '
				<tr class="days_wrapper">';

		// This is where we add the actual week link, if enabled on this location.
		if ($show_week_links === true)
			echo '
					<td class="windowbg weeks">
						<a href="', $scripturl, '?action=calendar;viewweek;year=', $calendar_data['current_year'], ';month=', $calendar_data['current_month'], ';day=', $week['days'][0]['day'], '" title="', $txt['calendar_view_week'], '">&#187;</a>
					</td>';

		// Now loop through each day in the week we're on.
		foreach ($week['days'] as $day)
		{
			// What classes should each day inherit? Day is default.
			$classes = array('days');
			if (!empty($day['day']))
			{
				$classes[] = !empty($day['is_today']) ? 'calendar_today' : 'windowbg';

				// Additional classes are given for events, holidays, and birthdays.
				foreach (array('events', 'holidays', 'birthdays') as $event_type)
					if (!empty($day[$event_type]))
						$classes[] = $event_type;
			}
			else
			{
				$classes[] = 'disabled';
			}

			// Now, implode the classes for each day.
			echo '
					<td class="', implode(' ', $classes), '">';

			// If it's within this current month, go ahead and begin.
			if (!empty($day['day']))
			{
				// If it's the first day of this month and not a mini-calendar, we'll add the month title - whether short or full.
				$title_prefix = !empty($day['is_first_of_month']) && $context['current_month'] == $calendar_data['current_month'] && $is_mini === false ? (!empty($calendar_data['short_month_titles']) ? $txt['months_short'][$calendar_data['current_month']] . ' ' : $txt['months_titles'][$calendar_data['current_month']] . ' ') : '';

				// The actual day number - be it a link, or just plain old text!
				if (!empty($modSettings['cal_daysaslink']) && $context['can_post'])
					echo '
						<a href="', $scripturl, '?action=calendar;sa=post;year=', $calendar_data['current_year'], ';month=', $calendar_data['current_month'], ';day=', $day['day'], ';', $context['session_var'], '=', $context['session_id'], '"><span class="day_text">', $title_prefix, $day['day'], '</span></a>';
				elseif ($is_mini)
					echo '
						<a href="', $scripturl, '?action=calendar;', $context['calendar_view'], ';year=', $calendar_data['current_year'], ';month=', $calendar_data['current_month'], ';day=', $day['day'], '"><span class="day_text">', $title_prefix, $day['day'], '</span></a>';
				else
					echo '
						<span class="day_text">', $title_prefix, $day['day'], '</span>';

				// A lot of stuff, we're not showing on mini-calendars to conserve space.
				if ($is_mini === false)
				{
					// Holidays are always fun, let's show them!
					if (!empty($day['holidays']))
						echo '
						<div class="smalltext holiday">
							<span>', $txt['calendar_prompt'], '</span> ', implode(', ', $day['holidays']), '
						</div>';

					// Happy Birthday Dear Member!
					if (!empty($day['birthdays']))
					{
						echo '
						<div class="smalltext">
							<span class="birthday">', $txt['birthdays'], '</span> ';

						/* Each of the birthdays has:
							id, name (person), age (if they have one set?), and is_last. (last in list?) */
						$use_js_hide = empty($context['show_all_birthdays']) && count($day['birthdays']) > 15;
						$birthday_count = 0;
						foreach ($day['birthdays'] as $member)
						{
							echo '<a href="', $scripturl, '?action=profile;u=', $member['id'], '"><span class="fix_rtl_names">', $member['name'], '</span>', isset($member['age']) ? ' (' . $member['age'] . ')' : '', '</a>', $member['is_last'] || ($count == 10 && $use_js_hide) ? '' : ', ';

							// 9...10! Let's stop there.
							if ($birthday_count == 10 && $use_js_hide)
								// !!TODO - Inline CSS and JavaScript should be moved.
								echo '<span class="hidelink" id="bdhidelink_', $day['day'], '">...<br><a href="', $scripturl, '?action=calendar;month=', $calendar_data['current_month'], ';year=', $calendar_data['current_year'], ';showbd" onclick="document.getElementById(\'bdhide_', $day['day'], '\').classList.remove(\'hidden\'); document.getElementById(\'bdhidelink_', $day['day'], '\').classList.add(\'hidden\'); return false;">(', sprintf($txt['calendar_click_all'], count($day['birthdays'])), ')</a></span><span id="bdhide_', $day['day'], '" class="hidden">, ';

							++$birthday_count;
						}
						if ($use_js_hide)
							echo '
							</span>';

						echo '
						</div><!-- .smalltext -->';
					}

					// Any special posted events?
					if (!empty($day['events']))
					{
						// Sort events by start time (all day events will be listed first)
						uasort($day['events'], function($a, $b) {
							if ($a['start_timestamp'] == $b['start_timestamp'])
								return 0;

							return ($a['start_timestamp'] < $b['start_timestamp']) ? -1 : 1;
						});

						echo '
						<div class="smalltext lefttext">
							<span class="event">', $txt['events'], '</span><br>';

						/* The events are made up of:
							title, href, is_last, can_edit (are they allowed to?), and modify_href. */
						foreach ($day['events'] as $event)
						{
							$event_icons_needed = ($event['can_edit'] || $event['can_export']) ? true : false;

							echo '
							<div class="event_wrapper', $event['starts_today'] == true ? ' event_starts_today' : '', $event['ends_today'] == true ? ' event_ends_today' : '', $event['allday'] == true ? ' allday' : '', $event['is_selected'] ? ' sel_event' : '', '">
								', $event['link'], '<br>
								<span class="event_time', empty($event_icons_needed) ? ' floatright' : '', '">';

							if (!empty($event['start_time_local']) && $event['starts_today'] == true)
								echo trim(str_replace(':00 ', ' ', $event['start_time_local']));
							elseif (!empty($event['end_time_local']) && $event['ends_today'] == true)
								echo strtolower($txt['ends']), ' ', trim(str_replace(':00 ', ' ', $event['end_time_local']));
							elseif (!empty($event['allday']))
								echo $txt['calendar_allday'];

							echo '
								</span>';

							if (!empty($event['location']))
								echo '
								<br>
								<span class="event_location', empty($event_icons_needed) ? ' floatright' : '', '">' . $event['location'] . '</span>';

							if ($event['can_edit'] || $event['can_export'])
							{
								echo '
								<span class="modify_event_links">';

								// If they can edit the event, show an icon they can click on....
								if ($event['can_edit'])
									echo '
									<a class="modify_event" href="', $event['modify_href'], '">
										<span class="main_icons calendar_modify" title="', $txt['calendar_edit'], '"></span>
									</a>';

								// Exporting!
								if ($event['can_export'])
									echo '
									<a class="modify_event" href="', $event['export_href'], '">
										<span class="main_icons calendar_export" title="', $txt['calendar_export'], '"></span>
									</a>';

								echo '
								</span><br class="clear">';
							}

							echo '
							</div><!-- .event_wrapper -->';
						}

						echo '
						</div><!-- .smalltext -->';
					}
				}
				$current_month_started = $count;
			}
			// Otherwise, assuming it's not a mini-calendar, we can show previous / next month days!
			elseif ($is_mini === false)
			{
				if (empty($current_month_started) && !empty($context['calendar_grid_prev']))
					echo '<a href="', $scripturl, '?action=calendar;year=', $context['calendar_grid_prev']['current_year'], ';month=', $context['calendar_grid_prev']['current_month'], '">', $context['calendar_grid_prev']['last_of_month'] - $calendar_data['shift']-- +1, '</a>';
				elseif (!empty($current_month_started) && !empty($context['calendar_grid_next']))
					echo '<a href="', $scripturl, '?action=calendar;year=', $context['calendar_grid_next']['current_year'], ';month=', $context['calendar_grid_next']['current_month'], '">', $current_month_started + 1 == $count ? (!empty($calendar_data['short_month_titles']) ? $txt['months_short'][$context['calendar_grid_next']['current_month']] . ' ' : $txt['months_titles'][$context['calendar_grid_next']['current_month']] . ' ') : '', $final_count++, '</a>';
			}

			// Close this day and increase var count.
			echo '
					</td>';

			++$count;
		}

		echo '
				</tr>';
	}

	// The end of our main table.
	echo '
			</table>';
}

/**
 * Shows a weekly grid
 *
 * @param string $grid_name The name of the grid
 * @return void|bool Returns false if the grid doesn't exist
 */
function template_show_week_grid($grid_name)
{
	global $context, $txt, $scripturl, $modSettings;

	// We might have no reason to proceed, if the variable isn't there.
	if (!isset($context['calendar_grid_' . $grid_name]))
		return false;

	// Handy pointer.
	$calendar_data = &$context['calendar_grid_' . $grid_name];

	// At the very least, we have one month. Possibly two, though.
	$iteration = 1;
	foreach ($calendar_data['months'] as $month_data)
	{
		// For our first iteration, we'll add a nice header!
		if ($iteration == 1)
		{
			echo '
				<div class="cat_bar">
					<h3 class="catbg centertext largetext">';

			// Previous Week Link...
			if (empty($calendar_data['previous_calendar']['disabled']) && !empty($calendar_data['show_next_prev']))
				echo '
						<span class="floatleft">
							<a href="', $calendar_data['previous_week']['href'], '">&#171;</a>
						</span>';

			// Next Week Link...
			if (empty($calendar_data['next_calendar']['disabled']) && !empty($calendar_data['show_next_prev']))
				echo '
						<span class="floatright">
							<a href="', $calendar_data['next_week']['href'], '">&#187;</a>
						</span>';

			// "Week beginning <date>"
			if (!empty($calendar_data['week_title']))
				echo $calendar_data['week_title'];

			echo '
					</h3>
				</div><!-- .cat_bar -->';

			// Show the controls
			template_calendar_top($calendar_data);
		}

		// Our actual month...
		echo '
				<div class="week_month_title">
					<a href="', $scripturl, '?action=calendar;month=', $month_data['current_month'], '">
						', $txt['months_titles'][$month_data['current_month']], '
					</a>
				</div>';

		// The main table grid for $this week.
		echo '
				<table class="table_grid calendar_week">
					<tr>
						<th class="days" scope="col">', $txt['calendar_day'], '</th>
						<th class="days" scope="col">', $txt['events'], '</th>
						<th class="days" scope="col">', $txt['calendar_prompt'], '</th>
						<th class="days" scope="col">', $txt['birthdays'], '</th>
					</tr>';

		// Each day of the week.
		foreach ($month_data['days'] as $day)
		{
			// How should we be highlighted or otherwise not...?
			$classes = array('days');
			$classes[] = !empty($day['is_today']) ? 'calendar_today' : 'windowbg';

			echo '
					<tr class="days_wrapper">
						<td class="', implode(' ', $classes), ' act_day">';

			// Should the day number be a link?
			if (!empty($modSettings['cal_daysaslink']) && $context['can_post'])
				echo '
							<a href="', $scripturl, '?action=calendar;sa=post;month=', $month_data['current_month'], ';year=', $month_data['current_year'], ';day=', $day['day'], ';', $context['session_var'], '=', $context['session_id'], '">', $txt['days'][$day['day_of_week']], ' - ', $day['day'], '</a>';
			else
				echo $txt['days'][$day['day_of_week']], ' - ', $day['day'];

			echo '
						</td>
						<td class="', implode(' ', $classes), '', empty($day['events']) ? (' disabled' . ($context['can_post'] ? ' week_post' : '')) : ' events', ' event_col" data-css-prefix="' . $txt['events'] . ' ', (empty($day['events']) && empty($context['can_post'])) ? $txt['none'] : '', '">';

			// Show any events...
			if (!empty($day['events']))
			{
				// Sort events by start time (all day events will be listed first)
				uasort($day['events'], function($a, $b) {
					if ($a['start_timestamp'] == $b['start_timestamp'])
						return 0;
					return ($a['start_timestamp'] < $b['start_timestamp']) ? -1 : 1;
				});

				foreach ($day['events'] as $event)
				{
					echo '
							<div class="event_wrapper">';

					$event_icons_needed = ($event['can_edit'] || $event['can_export']) ? true : false;

					echo $event['link'], '<br>
								<span class="event_time', empty($event_icons_needed) ? ' floatright' : '', '">';

					if (!empty($event['start_time_local']))
						echo trim($event['start_time_local']), !empty($event['end_time_local']) ? ' &ndash; ' . trim($event['end_time_local']) : '';
					else
						echo $txt['calendar_allday'];

					echo '
								</span>';

					if (!empty($event['location']))
						echo '<br>
								<span class="event_location', empty($event_icons_needed) ? ' floatright' : '', '">' . $event['location'] . '</span>';

					if (!empty($event_icons_needed))
					{
						echo ' <span class="modify_event_links">';

						// If they can edit the event, show a star they can click on....
						if (!empty($event['can_edit']))
							echo '
									<a class="modify_event" href="', $event['modify_href'], '">
										<span class="main_icons calendar_modify" title="', $txt['calendar_edit'], '"></span>
									</a>';

						// Can we export? Sweet.
						if (!empty($event['can_export']))
							echo '
									<a class="modify_event" href="', $event['export_href'], '">
										<span class="main_icons calendar_export" title="', $txt['calendar_export'], '"></span>
									</a>';

						echo '
								</span><br class="clear">';
					}

					echo '
							</div><!-- .event_wrapper -->';
				}

				if (!empty($context['can_post']))
				{
					echo '
							<div class="week_add_event">
								<a href="', $scripturl, '?action=calendar;sa=post;month=', $month_data['current_month'], ';year=', $month_data['current_year'], ';day=', $day['day'], ';', $context['session_var'], '=', $context['session_id'], '">', $txt['calendar_post_event'], '</a>
							</div>
							<br class="clear">';
				}
			}
			else
			{
				if (!empty($context['can_post']))
					echo '
							<div class="week_add_event">
								<a href="', $scripturl, '?action=calendar;sa=post;month=', $month_data['current_month'], ';year=', $month_data['current_year'], ';day=', $day['day'], ';', $context['session_var'], '=', $context['session_id'], '">', $txt['calendar_post_event'], '</a>
							</div>';
			}
			echo '
						</td>
						<td class="', implode(' ', $classes), !empty($day['holidays']) ? ' holidays' : ' disabled', ' holiday_col" data-css-prefix="' . $txt['calendar_prompt'] . ' ">';

			// Show any holidays!
			if (!empty($day['holidays']))
				echo implode('<br>', $day['holidays']);

			echo '
						</td>
						<td class="', implode(' ', $classes), '', !empty($day['birthdays']) ? ' birthdays' : ' disabled', ' birthday_col" data-css-prefix="' . $txt['birthdays'] . ' ">';

			// Show any birthdays...
			if (!empty($day['birthdays']))
			{
				foreach ($day['birthdays'] as $member)
					echo '
							<a href="', $scripturl, '?action=profile;u=', $member['id'], '">', $member['name'], '</a>
							', isset($member['age']) ? ' (' . $member['age'] . ')' : '', '
							', $member['is_last'] ? '' : '<br>';
			}
			echo '
						</td>
					</tr>';
		}

		// Increase iteration for loop counting.
		++$iteration;

		echo '
				</table>';
	}
}

/**
 * Calendar controls under the title
 *
 * Creates the view selector (list, month, week), the date selector (either a
 * select menu or a date range chooser, depending on the circumstances), and the
 * "Post Event" button.
 *
 * @param array $calendar_data The data for the calendar grid that this is for
 */
function template_calendar_top($calendar_data)
{
	global $context, $scripturl, $txt;

	echo '
		<div class="calendar_top roundframe', empty($calendar_data['disable_title']) ? ' noup' : '', '">
			<div id="calendar_viewselector" class="buttonrow floatleft">
				<a href="', $scripturl, '?action=calendar;viewlist;year=', $context['current_year'], ';month=', $context['current_month'], ';day=', $context['current_day'], '" class="button', $context['calendar_view'] == 'viewlist' ? ' active' : '', '">', $txt['calendar_list'], '</a>
				<a href="', $scripturl, '?action=calendar;viewmonth;year=', $context['current_year'], ';month=', $context['current_month'], ';day=', $context['current_day'], '" class="button', $context['calendar_view'] == 'viewmonth' ? ' active' : '', '">', $txt['calendar_month'], '</a>
				<a href="', $scripturl, '?action=calendar;viewweek;year=', $context['current_year'], ';month=', $context['current_month'], ';day=', $context['current_day'], '" class="button', $context['calendar_view'] == 'viewweek' ? ' active' : '', '">', $txt['calendar_week'], '</a>
			</div>
			', template_button_strip($context['calendar_buttons'], 'right');

Are you sure the usage of template_button_strip($context['calendar_buttons'], 'right') is correct as it seems to always return null.

	echo '
			<form action="', $scripturl, '?action=calendar;', $context['calendar_view'], '" id="', !empty($calendar_data['end_date']) ? 'calendar_range' : 'calendar_navigation', '" method="post" accept-charset="', $context['character_set'], '">
				<input type="text" name="start_date" id="start_date" maxlength="10" value="', $calendar_data['start_date'], '" tabindex="', $context['tabindex']++, '" class="date_input start" data-type="date">';

	if (!empty($calendar_data['end_date']))
		echo '
				<span>', strtolower($txt['to']), '</span>
				<input type="text" name="end_date" id="end_date" maxlength="10" value="', $calendar_data['end_date'], '" tabindex="', $context['tabindex']++, '" class="date_input end" data-type="date">';

	echo '
				<input type="submit" class="button" style="float:none" id="view_button" value="', $txt['view'], '">
			</form>
		</div><!-- .calendar_top -->';
}

/**
 * Template for posting a calendar event.
 */
function template_event_post()
{
	global $context, $txt, $scripturl, $modSettings;

	echo '
		<form action="', $scripturl, '?action=calendar;sa=post" method="post" name="postevent" accept-charset="', $context['character_set'], '" onsubmit="submitonce(this);">';

	if (!empty($context['event']['new']))
		echo '
			<input type="hidden" name="eventid" value="', $context['event']['eventid'], '">';

	// Start the main table.
	echo '
			<div id="post_event">
				<div class="cat_bar">
					<h3 class="catbg">
						', $context['page_title'], '
					</h3>
				</div>';

	if (!empty($context['post_error']['messages']))
		echo '
				<div class="errorbox">
					<dl class="event_error">
						<dt>
							', $context['error_type'] == 'serious' ? '<strong>' . $txt['error_while_submitting'] . '</strong>' : '', '
						</dt>
						<dt class="error">
							', implode('<br>', $context['post_error']['messages']), '
						</dt>
					</dl>
				</div>';

	echo '
				<div class="roundframe noup">
					<fieldset id="event_main">
						<legend><span', isset($context['post_error']['no_event']) ? ' class="error"' : '', '>', $txt['calendar_event_title'], '</span></legend>
						<input type="hidden" name="calendar" value="1">
						<div class="event_options_left" id="event_title">
							<div>
								<input type="text" id="evtitle" name="evtitle" maxlength="255" size="55" value="', $context['event']['title'], '" tabindex="', $context['tabindex']++, '">
							</div>
						</div>';

	// If this is a new event let the user specify which board they want the linked post to be put into.
	if ($context['event']['new'] && !empty($context['event']['categories']))
	{
		echo '
						<div class="event_options_right" id="event_board">
							<div>
								<span class="label">', $txt['calendar_post_in'], '</span>
								<input type="checkbox" name="link_to_board"', (!empty($context['event']['board']) ? ' checked' : ''), ' onclick="toggleLinked(this.form);">
								<select name="board"', empty($context['event']['board']) ? ' disabled' : '', '>';

		foreach ($context['event']['categories'] as $category)
		{
			echo '
									<optgroup label="', $category['name'], '">';

			foreach ($category['boards'] as $board)
				echo '
										<option value="', $board['id'], '"', $board['selected'] ? ' selected' : '', '>', $board['child_level'] > 0 ? str_repeat('==', $board['child_level'] - 1) . '=&gt;' : '', ' ', $board['name'], '</option>';
			echo '
									</optgroup>';
		}
		echo '
								</select>
							</div>
						</div><!-- #event_board -->';
	}

	// Note to theme writers: The JavaScript expects the input fields for the start and end dates & times to be contained in a wrapper element with the id "event_time_input"
	echo '
					</fieldset>
					<fieldset id="event_options">
						<legend>', $txt['calendar_event_options'], '</legend>
						<div class="event_options_left" id="event_time_input">
							<div>
								<span class="label">', $txt['start'], '</span>
								<input type="text" name="start_date" id="start_date" maxlength="10" value="', $context['event']['start_date'], '" tabindex="', $context['tabindex']++, '" class="date_input start" data-type="date">
								<input type="text" name="start_time" id="start_time" maxlength="11" value="', $context['event']['start_time_local'], '" tabindex="', $context['tabindex']++, '" class="time_input start" data-type="time"', !empty($context['event']['allday']) ? ' disabled' : '', '>
							</div>
							<div>
								<span class="label">', $txt['end'], '</span>
								<input type="text" name="end_date" id="end_date" maxlength="10" value="', $context['event']['end_date'], '" tabindex="', $context['tabindex']++, '" class="date_input end" data-type="date"', $modSettings['cal_maxspan'] == 1 ? ' disabled' : '', '>
								<input type="text" name="end_time" id="end_time" maxlength="11" value="', $context['event']['end_time_local'], '" tabindex="', $context['tabindex']++, '" class="time_input end" data-type="time"', !empty($context['event']['allday']) ? ' disabled' : '', '>
							</div>
						</div><!-- #event_time_input -->
						<div class="event_options_right" id="event_time_options">
							<div id="event_allday">
								<label for="allday"><span class="label">', $txt['calendar_allday'], '</span></label>
								<input type="checkbox" name="allday" id="allday"', !empty($context['event']['allday']) ? ' checked' : '', ' tabindex="', $context['tabindex']++, '">
							</div>
							<div id="event_timezone">
								<span class="label">', $txt['calendar_timezone'], '</span>
								<select name="tz" id="tz"', !empty($context['event']['allday']) ? ' disabled' : '', '>';

	foreach ($context['all_timezones'] as $tz => $tzname)
		echo '
									<option', is_numeric($tz) ? ' value="" disabled' : ' value="' . $tz . '"', $tz === $context['event']['tz'] ? ' selected' : '', '>', $tzname, '</option>';

	echo '
								</select>
							</div>
						</div><!-- #event_time_options -->
						<div>
							<span class="label">', $txt['location'], '</span>
							<input type="text" name="event_location" id="event_location" maxlength="255" value="', !empty($context['event']['location']) ? $context['event']['location'] : '', '" tabindex="', $context['tabindex']++, '">
						</div>
					</fieldset>';

	echo '
					<input type="submit" value="', empty($context['event']['new']) ? $txt['save'] : $txt['post'], '" class="button">';

	// Delete button?
	if (empty($context['event']['new']))
		echo '
					<input type="submit" name="deleteevent" value="', $txt['event_delete'], '" data-confirm="', $txt['calendar_confirm_delete'], '" class="button you_sure">';

	echo '
					<input type="hidden" name="', $context['session_var'], '" value="', $context['session_id'], '">
					<input type="hidden" name="eventid" value="', $context['event']['eventid'], '">

				</div><!-- .roundframe -->
			</div><!-- #post_event -->
		</form>';
}

/**
 * Displays a clock
 */
function template_bcd()
{
	global $context, $scripturl;
	$alt = false;

	echo '
		<table class="table_grid" style="margin: 0 auto 0 auto; border: 1px solid #ccc;">
			<tr>
				<th class="windowbg" style="font-weight: bold; text-align: center; border-bottom: 1px solid #ccc;" colspan="6">BCD Clock</th>
			</tr>
			<tr class="windowbg">';

	foreach ($context['clockicons'] as $t => $v)
	{
		echo '
				<td style="padding-', $alt ? 'right' : 'left', ': 1.5em;">';

		foreach ($v as $i)
			echo '
					<img src="', $context['offimg'], '" alt="" id="', $t, '_', $i, '"><br>';

		echo '
				</td>';

		$alt = !$alt;

The condition $alt is always false.

	}
	echo '
			</tr>
			<tr class="windowbg" style="border-top: 1px solid #ccc; text-align: center;">
				<td colspan="6">
					<a href="', $scripturl, '?action=clock;rb">Are you hardcore?</a>
				</td>
			</tr>
		</table>

		<script>
			var icons = new Object();';

	foreach ($context['clockicons'] as $t => $v)
	{
		foreach ($v as $i)
			echo '
			icons[\'', $t, '_', $i, '\'] = document.getElementById(\'', $t, '_', $i, '\');';
	}

	echo '
			function update()
			{
				// Get the current time
				var time = new Date();
				var hour = time.getHours();
				var min = time.getMinutes();
				var sec = time.getSeconds();

				// Break it up into individual digits
				var h1 = parseInt(hour / 10);
				var h2 = hour % 10;
				var m1 = parseInt(min / 10);
				var m2 = min % 10;
				var s1 = parseInt(sec / 10);
				var s2 = sec % 10;

				// For each digit figure out which ones to turn off and which ones to turn on
				var turnon = new Array();';

	foreach ($context['clockicons'] as $t => $v)
	{
		foreach ($v as $i)
			echo '
				if (', $t, ' >= ', $i, ')
				{
					turnon.push("', $t, '_', $i, '");
					', $t, ' -= ', $i, ';
				}';
	}

	echo '
				for (var i in icons)
					if (!in_array(i, turnon))
						icons[i].src = "', $context['offimg'], '";
					else
						icons[i].src = "', $context['onimg'], '";

				window.setTimeout("update();", 500);
			}
			// Checks for variable in theArray.
			function in_array(variable, theArray)
			{
				for (var i = 0; i < theArray.length; i++)
				{
					if (theArray[i] == variable)
						return true;
				}
				return false;
			}

			update();
		</script>';
}

/**
 * Displays the hours, minutes and seconds for our clock
 */
function template_hms()
{
	global $context, $scripturl;
	$alt = false;

	echo '
		<table class="table_grid" style="margin: 0 auto 0 auto; border: 1px solid #ccc;">
			<tr>
				<th class="windowbg" style="font-weight: bold; text-align: center; border-bottom: 1px solid #ccc;">Binary Clock</th>
			</tr>';

	foreach ($context['clockicons'] as $t => $v)
	{
		echo '
			<tr class="windowbg">
				<td>';

		foreach ($v as $i)
			echo '
					<img src="', $context['offimg'], '" alt="" id="', $t, '_', $i, '" style="padding: 2px;">';

		echo '
				</td>
			</tr>';

		$alt = !$alt;

The condition $alt is always false.

	}
	echo '
			<tr class="windowbg" style="border-top: 1px solid #ccc; text-align: center;">
				<td>
					<a href="', $scripturl, '?action=clock">Too tough for you?</a>
				</td>
			</tr>
		</table>';

	echo '
		<script>
			var icons = new Object();';

	foreach ($context['clockicons'] as $t => $v)
	{
		foreach ($v as $i)
			echo '
			icons[\'', $t, '_', $i, '\'] = document.getElementById(\'', $t, '_', $i, '\');';
	}

	echo '
			function update()
			{
				// Get the current time
				var time = new Date();
				var h = time.getHours();
				var m = time.getMinutes();
				var s = time.getSeconds();

				// For each digit figure out which ones to turn off and which ones to turn on
				var turnon = new Array();';

	foreach ($context['clockicons'] as $t => $v)
	{
		foreach ($v as $i)
			echo '
				if (', $t, ' >= ', $i, ')
				{
					turnon.push("', $t, '_', $i, '");
					', $t, ' -= ', $i, ';
				}';
	}

	echo '
				for (var i in icons)
					if (!in_array(i, turnon))
						icons[i].src = "', $context['offimg'], '";
					else
						icons[i].src = "', $context['onimg'], '";

				window.setTimeout("update();", 500);
			}
			// Checks for variable in theArray.
			function in_array(variable, theArray)
			{
				for (var i = 0; i < theArray.length; i++)
				{
					if (theArray[i] == variable)
						return true;
				}
				return false;
			}

			update();
		</script>';
}

/**
 * Displays a binary clock
 */
function template_omfg()
{
	global $context;
	$alt = false;

	echo '
		<table class="table_grid" style="margin: 0 auto 0 auto; border: 1px solid #ccc;">
			<tr>
				<th class="windowbg" style="font-weight: bold; text-align: center; border-bottom: 1px solid #ccc;">OMFG Binary Clock</th>
			</tr>';

	foreach ($context['clockicons'] as $t => $v)
	{
		echo '
			<tr class="windowbg">
				<td>';

		foreach ($v as $i)
			echo '
					<img src="', $context['offimg'], '" alt="" id="', $t, '_', $i, '" style="padding: 2px;">';

		echo '
				</td>
			</tr>';

		$alt = !$alt;

The condition $alt is always false.

	}

	echo '
		</table>
		<script>
			var icons = new Object();';

	foreach ($context['clockicons'] as $t => $v)
	{
		foreach ($v as $i)
			echo '
			icons[\'', $t, '_', $i, '\'] = document.getElementById(\'', $t, '_', $i, '\');';
	}

	echo '
			function update()
			{
				// Get the current time
				var time = new Date();
				var month = time.getMonth() + 1;
				var day = time.getDate();
				var year = time.getFullYear();
				year = year % 100;
				var hour = time.getHours();
				var min = time.getMinutes();
				var sec = time.getSeconds();

				// For each digit figure out which ones to turn off and which ones to turn on
				var turnon = new Array();';

	foreach ($context['clockicons'] as $t => $v)
	{
		foreach ($v as $i)
			echo '
				if (', $t, ' >= ', $i, ')
				{
					turnon.push("', $t, '_', $i, '");
					', $t, ' -= ', $i, ';
				}';
	}

	echo '
				for (var i in icons)
					if (!in_array(i, turnon))
						icons[i].src = "', $context['offimg'], '";
					else
						icons[i].src = "', $context['onimg'], '";

				window.setTimeout("update();", 500);
			}
			// Checks for variable in theArray.
			function in_array(variable, theArray)
			{
				for (var i = 0; i < theArray.length; i++)
				{
					if (theArray[i] == variable)
						return true;
				}
				return false;
			}

			update();
		</script>';
}

/**
 * Displays the time
 */
function template_thetime()
{
	global $context;
	$alt = false;

	echo '
		<table class="table_grid" style="margin: 0 auto 0 auto; border: 1px solid #ccc;">
			<tr>
				<th class="windowbg" style="font-weight: bold; text-align: center; border-bottom: 1px solid #ccc;">The time you requested</th>
			</tr>';

	foreach ($context['clockicons'] as $v)
	{
		echo '
			<tr class="windowbg">
				<td>';

		foreach ($v as $i)
			echo '
					<img src="', $i ? $context['onimg'] : $context['offimg'], '" alt="" style="padding: 2px;">';

		echo '
				</td>
			</tr>';

		$alt = !$alt;

The condition $alt is always false.

	}

	echo '
		</table>';
}

?>