<?php

/**

 * Twenty Eleven Theme Options

 *

 * @package WordPress

 * @subpackage Twenty_Eleven

 * @since Twenty Eleven 1.0

 */

/**

 * Properly enqueue styles and scripts for our theme options page.

 *

 * This function is attached to the admin_enqueue_scripts action hook.

 *

 * @since Twenty Eleven 1.0

 *

 */

function twentyeleven_admin_enqueue_scripts( $hook_suffix ) {

	wp_enqueue_style( 'twentyeleven-theme-options', get_template_directory_uri() . '/inc/theme-options.css', false, '2011-04-28' );

	wp_enqueue_script( 'twentyeleven-theme-options', get_template_directory_uri() . '/inc/theme-options.js', array( 'farbtastic' ), '2011-06-10' );

	wp_enqueue_style( 'farbtastic' );

}

add_action( 'admin_print_styles-appearance_page_theme_options', 'twentyeleven_admin_enqueue_scripts' );

/**

 * Register the form setting for our twentyeleven_options array.

 *

 * This function is attached to the admin_init action hook.

 *

 * This call to register_setting() registers a validation callback, twentyeleven_theme_options_validate(),

 * which is used when the option is saved, to ensure that our option values are complete, properly

 * formatted, and safe.

 *

 * @since Twenty Eleven 1.0

 */

function twentyeleven_theme_options_init() {

	register_setting(

		'twentyeleven_options',       // Options group, see settings_fields() call in twentyeleven_theme_options_render_page()

		'twentyeleven_theme_options', // Database option, see twentyeleven_get_theme_options()

		'twentyeleven_theme_options_validate' // The sanitization callback, see twentyeleven_theme_options_validate()

	);

	// Register our settings field group

	add_settings_section(

		'general', // Unique identifier for the settings section

		'', // Section title (we don't want one)

		'__return_false', // Section callback (we don't want anything)

		'theme_options' // Menu slug, used to uniquely identify the page; see twentyeleven_theme_options_add_page()

	);

	// Register our individual settings fields

	add_settings_field(

		'color_scheme',  // Unique identifier for the field for this section

		__( 'Color Scheme', 'twentyeleven' ), // Setting field label

		'twentyeleven_settings_field_color_scheme', // Function that renders the settings field

		'theme_options', // Menu slug, used to uniquely identify the page; see twentyeleven_theme_options_add_page()

		'general' // Settings section. Same as the first argument in the add_settings_section() above

	);

	add_settings_field( 'link_color', __( 'Link Color',     'twentyeleven' ), 'twentyeleven_settings_field_link_color', 'theme_options', 'general' );

	add_settings_field( 'layout',     __( 'Default Layout', 'twentyeleven' ), 'twentyeleven_settings_field_layout',     'theme_options', 'general' );

}

add_action( 'admin_init', 'twentyeleven_theme_options_init' );

/**

 * Change the capability required to save the 'twentyeleven_options' options group.

 *

 * @see twentyeleven_theme_options_init() First parameter to register_setting() is the name of the options group.

 * @see twentyeleven_theme_options_add_page() The edit_theme_options capability is used for viewing the page.

 *

 * By default, the options groups for all registered settings require the manage_options capability.

 * This filter is required to change our theme options page to edit_theme_options instead.

 * By default, only administrators have either of these capabilities, but the desire here is

 * to allow for finer-grained control for roles and users.

 *

 * @param string $capability The capability used for the page, which is manage_options by default.

 * @return string The capability to actually use.

 */

function twentyeleven_option_page_capability( $capability ) {

	return 'edit_theme_options';

}

add_filter( 'option_page_capability_twentyeleven_options', 'twentyeleven_option_page_capability' );

/**

 * Add our theme options page to the admin menu, including some help documentation.

 *

 * This function is attached to the admin_menu action hook.

 *

 * @since Twenty Eleven 1.0

 */

function twentyeleven_theme_options_add_page() {

	$theme_page = add_theme_page(

		__( 'Theme Options', 'twentyeleven' ),   // Name of page

		__( 'Theme Options', 'twentyeleven' ),   // Label in menu

		'edit_theme_options',                    // Capability required

		'theme_options',                         // Menu slug, used to uniquely identify the page

		'twentyeleven_theme_options_render_page' // Function that renders the options page

	);

	if ( ! $theme_page )

		return;

	add_action( "load-$theme_page", 'twentyeleven_theme_options_help' );

}

add_action( 'admin_menu', 'twentyeleven_theme_options_add_page' );

function twentyeleven_theme_options_help() {

	$help = '<p>' . __( 'Some themes provide customization options that are grouped together on a Theme Options screen. If you change themes, options may change or disappear, as they are theme-specific. Your current theme, Twenty Eleven, provides the following Theme Options:', 'twentyeleven' ) . '</p>' .

			'<ol>' .

				'<li>' . __( '<strong>Color Scheme</strong>: You can choose a color palette of "Light" (light background with dark text) or "Dark" (dark background with light text) for your site.', 'twentyeleven' ) . '</li>' .

				'<li>' . __( '<strong>Link Color</strong>: You can choose the color used for text links on your site. You can enter the HTML color or hex code, or you can choose visually by clicking the "Select a Color" button to pick from a color wheel.', 'twentyeleven' ) . '</li>' .

				'<li>' . __( '<strong>Default Layout</strong>: You can choose if you want your site&#8217;s default layout to have a sidebar on the left, the right, or not at all.', 'twentyeleven' ) . '</li>' .

			'</ol>' .

			'<p>' . __( 'Remember to click "Save Changes" to save any changes you have made to the theme options.', 'twentyeleven' ) . '</p>';

	$sidebar = '<p><strong>' . __( 'For more information:', 'twentyeleven' ) . '</strong></p>' .

		'<p>' . __( '<a href="http://codex.wordpress.org/Appearance_Theme_Options_Screen" target="_blank">Documentation on Theme Options</a>', 'twentyeleven' ) . '</p>' .

		'<p>' . __( '<a href="http://wordpress.org/support/" target="_blank">Support Forums</a>', 'twentyeleven' ) . '</p>';

	$screen = get_current_screen();

	if ( method_exists( $screen, 'add_help_tab' ) ) {

		// WordPress 3.3

		$screen->add_help_tab( array(

			'title' => __( 'Overview', 'twentyeleven' ),

			'id' => 'theme-options-help',

			'content' => $help,

			)

		);

		$screen->set_help_sidebar( $sidebar );

	} else {

		// WordPress 3.2

		add_contextual_help( $screen, $help . $sidebar );

	}

}

/**

 * Returns an array of color schemes registered for Twenty Eleven.

 *

 * @since Twenty Eleven 1.0

 */

function twentyeleven_color_schemes() {

	$color_scheme_options = array(

		'light' => array(

			'value' => 'light',

			'label' => __( 'Light', 'twentyeleven' ),

			'thumbnail' => get_template_directory_uri() . '/inc/images/light.png',

			'default_link_color' => '#1b8be0',

		),

		'dark' => array(

			'value' => 'dark',

			'label' => __( 'Dark', 'twentyeleven' ),

			'thumbnail' => get_template_directory_uri() . '/inc/images/dark.png',

			'default_link_color' => '#e4741f',

		),

	);

	return apply_filters( 'twentyeleven_color_schemes', $color_scheme_options );

}

/**

 * Returns an array of layout options registered for Twenty Eleven.

 *

 * @since Twenty Eleven 1.0

 */

function twentyeleven_layouts() {

	$layout_options = array(

		'content-sidebar' => array(

			'value' => 'content-sidebar',

			'label' => __( 'Content on left', 'twentyeleven' ),

			'thumbnail' => get_template_directory_uri() . '/inc/images/content-sidebar.png',

		),

		'sidebar-content' => array(

			'value' => 'sidebar-content',

			'label' => __( 'Content on right', 'twentyeleven' ),

			'thumbnail' => get_template_directory_uri() . '/inc/images/sidebar-content.png',

		),

		'content' => array(

			'value' => 'content',

			'label' => __( 'One-column, no sidebar', 'twentyeleven' ),

			'thumbnail' => get_template_directory_uri() . '/inc/images/content.png',

		),

	);

	return apply_filters( 'twentyeleven_layouts', $layout_options );

}

/**

 * Returns the default options for Twenty Eleven.

 *

 * @since Twenty Eleven 1.0

 */

function twentyeleven_get_default_theme_options() {

	$default_theme_options = array(

		'color_scheme' => 'light',

		'link_color'   => twentyeleven_get_default_link_color( 'light' ),

		'theme_layout' => 'content-sidebar',

	);

	if ( is_rtl() )

 		$default_theme_options['theme_layout'] = 'sidebar-content';

	return apply_filters( 'twentyeleven_default_theme_options', $default_theme_options );

}

/**

 * Returns the default link color for Twenty Eleven, based on color scheme.

 *

 * @since Twenty Eleven 1.0

 *

 * @param $string $color_scheme Color scheme. Defaults to the active color scheme.

 * @return $string Color.

*/

function twentyeleven_get_default_link_color( $color_scheme = null ) {

	if ( null === $color_scheme ) {

		$options = twentyeleven_get_theme_options();

		$color_scheme = $options['color_scheme'];

	}

	$color_schemes = twentyeleven_color_schemes();

	if ( ! isset( $color_schemes[ $color_scheme ] ) )

		return false;

	return $color_schemes[ $color_scheme ]['default_link_color'];

}

/**

 * Returns the options array for Twenty Eleven.

 *

 * @since Twenty Eleven 1.0

 */

function twentyeleven_get_theme_options() {

	return get_option( 'twentyeleven_theme_options', twentyeleven_get_default_theme_options() );

}

/**

 * Renders the Color Scheme setting field.

 *

 * @since Twenty Eleven 1.3

 */

function twentyeleven_settings_field_color_scheme() {

	$options = twentyeleven_get_theme_options();

	foreach ( twentyeleven_color_schemes() as $scheme ) {

	?>

	<div class="layout image-radio-option color-scheme">

	<label class="description">

		<input type="radio" name="twentyeleven_theme_options[color_scheme]" value="<?php echo esc_attr( $scheme['value'] ); ?>" <?php checked( $options['color_scheme'], $scheme['value'] ); ?> />

		<input type="hidden" id="default-color-<?php echo esc_attr( $scheme['value'] ); ?>" value="<?php echo esc_attr( $scheme['default_link_color'] ); ?>" />

		<span>

			<img src="<?php echo esc_url( $scheme['thumbnail'] ); ?>" width="136" height="122" alt="" />

			<?php echo $scheme['label']; ?>

		</span>

	</label>

	</div>

	<?php

	}

}

/**

 * Renders the Link Color setting field.

 *

 * @since Twenty Eleven 1.3

 */

function twentyeleven_settings_field_link_color() {

	$options = twentyeleven_get_theme_options();

	?>

	<input type="text" name="twentyeleven_theme_options[link_color]" id="link-color" value="<?php echo esc_attr( $options['link_color'] ); ?>" />

	<a href="#" class="pickcolor hide-if-no-js" id="link-color-example"></a>

	<input type="button" class="pickcolor button hide-if-no-js" value="<?php esc_attr_e( 'Select a Color', 'twentyeleven' ); ?>" />

	<div id="colorPickerDiv" style="z-index: 100; background:#eee; border:1px solid #ccc; position:absolute; display:none;"></div>

	<br />

	<span><?php printf( __( 'Default color: %s', 'twentyeleven' ), '<span id="default-color">' . twentyeleven_get_default_link_color( $options['color_scheme'] ) . '</span>' ); ?></span>

	<?php

}

/**

 * Renders the Layout setting field.

 *

 * @since Twenty Eleven 1.3

 */

function twentyeleven_settings_field_layout() {

	$options = twentyeleven_get_theme_options();

	foreach ( twentyeleven_layouts() as $layout ) {

		?>

		<div class="layout image-radio-option theme-layout">

		<label class="description">

			<input type="radio" name="twentyeleven_theme_options[theme_layout]" value="<?php echo esc_attr( $layout['value'] ); ?>" <?php checked( $options['theme_layout'], $layout['value'] ); ?> />

			<span>

				<img src="<?php echo esc_url( $layout['thumbnail'] ); ?>" width="136" height="122" alt="" />

				<?php echo $layout['label']; ?>

			</span>

		</label>

		</div>

		<?php

	}

}

/**

 * Returns the options array for Twenty Eleven.

 *

 * @since Twenty Eleven 1.2

 */

function twentyeleven_theme_options_render_page() {

	?>

	<div class="wrap">

		<?php screen_icon(); ?>

		<?php $theme_name = function_exists( 'wp_get_theme' ) ? wp_get_theme() : get_current_theme(); ?>

		<h2><?php printf( __( '%s Theme Options', 'twentyeleven' ), $theme_name ); ?></h2>

		<?php settings_errors(); ?>

		<form method="post" action="options.php">

			<?php

				settings_fields( 'twentyeleven_options' );

				do_settings_sections( 'theme_options' );

				submit_button();

			?>

		</form>

	</div>

	<?php

}

/**

 * Sanitize and validate form input. Accepts an array, return a sanitized array.

 *

 * @see twentyeleven_theme_options_init()

 * @todo set up Reset Options action

 *

 * @since Twenty Eleven 1.0

 */

function twentyeleven_theme_options_validate( $input ) {

	$output = $defaults = twentyeleven_get_default_theme_options();

	// Color scheme must be in our array of color scheme options

	if ( isset( $input['color_scheme'] ) && array_key_exists( $input['color_scheme'], twentyeleven_color_schemes() ) )

		$output['color_scheme'] = $input['color_scheme'];

	// Our defaults for the link color may have changed, based on the color scheme.

	$output['link_color'] = $defaults['link_color'] = twentyeleven_get_default_link_color( $output['color_scheme'] );

	// Link color must be 3 or 6 hexadecimal characters

	if ( isset( $input['link_color'] ) && preg_match( '/^#?([a-f0-9]{3}){1,2}$/i', $input['link_color'] ) )

		$output['link_color'] = '#' . strtolower( ltrim( $input['link_color'], '#' ) );

	// Theme layout must be in our array of theme layout options

	if ( isset( $input['theme_layout'] ) && array_key_exists( $input['theme_layout'], twentyeleven_layouts() ) )

		$output['theme_layout'] = $input['theme_layout'];

	return apply_filters( 'twentyeleven_theme_options_validate', $output, $input, $defaults );

}

/**

 * Enqueue the styles for the current color scheme.

 *

 * @since Twenty Eleven 1.0

 */

function twentyeleven_enqueue_color_scheme() {

	$options = twentyeleven_get_theme_options();

	$color_scheme = $options['color_scheme'];

	if ( 'dark' == $color_scheme )

		wp_enqueue_style( 'dark', get_template_directory_uri() . '/colors/dark.css', array(), null );

	do_action( 'twentyeleven_enqueue_color_scheme', $color_scheme );

}

add_action( 'wp_enqueue_scripts', 'twentyeleven_enqueue_color_scheme' );

/**

 * Add a style block to the theme for the current link color.

 *

 * This function is attached to the wp_head action hook.

 *

 * @since Twenty Eleven 1.0

 */

function twentyeleven_print_link_color_style() {

	$options = twentyeleven_get_theme_options();

	$link_color = $options['link_color'];

	$default_options = twentyeleven_get_default_theme_options();

	// Don't do anything if the current link color is the default.

	if ( $default_options['link_color'] == $link_color )

		return;

?>

	<style>

		/* Link color */

		a,

		#site-title a:focus,

		#site-title a:hover,

		#site-title a:active,

		.entry-title a:hover,

		.entry-title a:focus,

		.entry-title a:active,

		.widget_twentyeleven_ephemera .comments-link a:hover,

		section.recent-posts .other-recent-posts a[rel="bookmark"]:hover,

		section.recent-posts .other-recent-posts .comments-link a:hover,

		.format-image footer.entry-meta a:hover,

		#site-generator a:hover {

			color: <?php echo $link_color; ?>;

		}

		section.recent-posts .other-recent-posts .comments-link a:hover {

			border-color: <?php echo $link_color; ?>;

		}

		article.feature-image.small .entry-summary p a:hover,

		.entry-header .comments-link a:hover,

		.entry-header .comments-link a:focus,

		.entry-header .comments-link a:active,

		.feature-slider a.active {

			background-color: <?php echo $link_color; ?>;

		}

	</style>

<?php

}

add_action( 'wp_head', 'twentyeleven_print_link_color_style' );

/**

 * Adds Twenty Eleven layout classes to the array of body classes.

 *

 * @since Twenty Eleven 1.0

 */

function twentyeleven_layout_classes( $existing_classes ) {

	$options = twentyeleven_get_theme_options();

	$current_layout = $options['theme_layout'];

	if ( in_array( $current_layout, array( 'content-sidebar', 'sidebar-content' ) ) )

		$classes = array( 'two-column' );

	else

		$classes = array( 'one-column' );

	if ( 'content-sidebar' == $current_layout )

		$classes[] = 'right-sidebar';

	elseif ( 'sidebar-content' == $current_layout )

		$classes[] = 'left-sidebar';