Modular theme options

ap_core_do_theme_options.php

function ap_core_do_theme_options() {
	ap_core_tab_setup();
	ap_core_general_settings();
	ap_core_typography_settings();
	ap_core_advanced_settings();
}

ap_core_general_settings.php

function ap_core_general_settings() {
	$options_before = '<table class="form-table" id="tabs-1">';
	$options_after = '</table>';

	echo $options_before;
	ap_core_sidebar_option();
	ap_core_posts_excerpts_option();
	ap_core_footer_option();
	ap_core_presstrends_option();
	echo $options_after;
}

ap_core_sidebar_option.php

function ap_core_sidebar_option() {
	$defaults = ap_core_get_theme_defaults();
	$options = get_option( 'ap_core_theme_options', $defaults );

	ob_start();
	?>
		<tr valign="top"><th scope="row"><?php _e( 'Sidebar', 'museum-core' ); ?></th>
			<td>
				<select name="ap_core_theme_options[sidebar]">
				<?php
					$selected = $options['sidebar'];
					foreach ( ap_core_sidebar() as $option ) {
						$label = $option['label'];
						$value = $option['value'];
						echo '<option value="' . $value . '" ' . selected( $selected, $value ) . '>' . $label . '</option>';
					}
				?>
				</select>
			</td>
		</tr>
	<?php
	$sidebar = ob_get_contents();
	ob_end_clean();
	echo $sidebar;
}

ap_options_form.php

					<form method="post" action="options.php">
						<div id="tabs">
							<?php settings_fields( 'AP_CORE_OPTIONS' ); ?>
							<?php ap_core_do_theme_options(); ?>
						</div>
						<p class="submit">
							<input type="submit" class="button-primary" value="<?php _e( 'Save Options', 'museum-core' ); ?>" />
							<input type="hidden" name="ap-core-settings-submit" value="Y" />
						</p>
					</form>

do_my_custom_theme_options.php

function do_my_custom_theme_options() {
	my_custom_tab_setup();
	ap_core_general_settings();
	ap_core_typography_settings();
	ap_core_advanced_settings();
	my_custom_theme_settings();
}

my_custom_tab_setup.php

function my_custom_tab_setup() {
	ob_start();
	?>
		<div class="tab-wrap">
			<ul class="nav-tab-wrapper">
				<li><?php screen_icon(); ?></li>
				<li><h2><a class="nav-tab" href="#tabs-1"><?php _e('General','museum-core'); ?></a></h2></li>
				<li><h2><a class="nav-tab" href="#tabs-2"><?php _e('Font Stuff','my-theme'); ?></a></h2></li>
				<li><h2><a class="nav-tab" href="#tabs-3"><?php _e('Advanced','museum-core'); ?></a></h2></li>
				<li><h2><a class="nav-tab" href="#tabs-4"><?php _e('Custom Tab','my-theme'); ?></a></h2></li>
			</ul>
		</div>
	<?php
	$tabs = ob_get_contents();
	ob_end_clean();
	echo $tabs;
}

my_custom_theme_settings.php

function my_custom_theme_settings() {
	$options = get_option( 'my_custom_theme_options' );

	ob_start();
	?>
	<table class="form-table" id="tabs-4">
		<tr valign="top"><th scope="row"><?php _e( 'Hello World!', 'museum-core' ); ?></th>
			<td>
				<select name="ap_core_theme_options[hello]">
				<?php
					$selected = $options['hello'];
					foreach ( ap_core_true_false() as $option ) {
						$label = $option['label'];
						$value = $option['value'];
						echo '<option value="' . $value . '" ' . selected( $selected, $value ) . '>' . $label . '</option>';
					} ?>
				</select><br />
				<label class="description" for="my_custom_theme_options[hello]"><?php _e( 'Some description of my setting.', 'museum-core' ); ?></label>
			</td>
		</tr>
	</table>
	<?php
	$custom = ob_get_contents();
	ob_end_clean();
	echo $custom;
}

my_functions.php

<?php
if (!function_exists('ap_core_do_theme_options')) {
	function ap_core_do_theme_options() {
		do_my_custom_theme_options();
	}
}
function do_my_custom_theme_options() {
	my_custom_tab_setup();
	ap_core_general_settings();
	ap_core_typography_settings();
	ap_core_advanced_settings();
	my_custom_theme_settings();
}
function my_custom_tab_setup() {
	ob_start();
	?>
		<div class="tab-wrap">
			<ul class="nav-tab-wrapper">
				<li><?php screen_icon(); ?></li>
				<li><h2><a class="nav-tab" href="#tabs-1"><?php _e('General','museum-core'); ?></a></h2></li>
				<li><h2><a class="nav-tab" href="#tabs-2"><?php _e('Font Stuff','my-theme'); ?></a></h2></li>
				<li><h2><a class="nav-tab" href="#tabs-3"><?php _e('Advanced','museum-core'); ?></a></h2></li>
				<li><h2><a class="nav-tab" href="#tabs-4"><?php _e('Custom Tab','my-theme'); ?></a></h2></li>
			</ul>
		</div>
	<?php
	$tabs = ob_get_contents();
	ob_end_clean();
	echo $tabs;
}

function my_custom_theme_settings() {
	$options = get_option( 'my_custom_theme_options' );

	ob_start();
	?>
	<table class="form-table" id="tabs-4">
		<tr valign="top"><th scope="row"><?php _e( 'Hello World!', 'museum-core' ); ?></th>
			<td>
				<select name="ap_core_theme_options[hello]">
				<?php
					$selected = $options['hello'];
					foreach ( ap_core_true_false() as $option ) {
						$label = $option['label'];
						$value = $option['value'];
						echo '<option value="' . $value . '" ' . selected( $selected, $value ) . '>' . $label . '</option>';
					} ?>
				</select><br />
				<label class="description" for="my_custom_theme_options[hello]"><?php _e( 'Some description of my setting.', 'museum-core' ); ?></label>
			</td>
		</tr>
	</table>
	<?php
	$custom = ob_get_contents();
	ob_end_clean();
	echo $custom;
}
?>