taxonomy-filter-settings.php

<?php
// Check request data before save main settings
if ( ( isset( $_GET[ 'page' ] ) && $_GET[ 'page' ] == TFP_PREFIX ) && isset( $_POST[ 'taxonomy_filter_main_action' ] ) ) {
	taxonomy_filter_save_main_settings();
}

/**
 * Load internalization supports
 */
function taxonomy_filter_load_textdomain() {
	load_plugin_textdomain( TFP_PREFIX, false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );
}
add_action( 'plugins_loaded', 'taxonomy_filter_load_textdomain' );

/**
 * Add taxonomy filter settings before the admin page is rendered
 */
function taxonomy_filter_admin_init() {
	register_setting( 'taxonomy_filter_options', TFP_OPTIONS );
	add_settings_section( 'taxonomy_filter_main', '', 'taxonomy_filter_option_main_show', 'taxonomy_filter_main_section' );
}
add_action( 'admin_init', 'taxonomy_filter_admin_init' );

/**
 * Render admin settings page
 */
function taxonomy_filter_settings() {
	settings_fields( 'taxonomy_filter_options' );
	settings_fields( 'taxonomy_filter_user_options' );
	?>
	<div class="wrap">
		<div class="icon32"><img src="<?php echo plugins_url( 'taxonomy-filter/images/icon32.png' ) ?>" /></div>
		<h2><?php _e( 'Taxonomy Filter settings', TFP_PREFIX ) ?></h2>

		<script type="text/javascript">
		jQuery(document).ready(function($) {
			jQuery('body').on('click', '.button-primary.reset:not(.confirm, .disabled)', function(e) {
				e.preventDefault();
				jQuery(this).addClass('confirm');
				jQuery(this).val();
				jQuery(this).val('<?php _e( 'Confirm reset', TFP_PREFIX ) ?>');
			}).on('click', '.button-primary.taxonomy_filter_main.reset.confirm:not(.disabled)', function() {
				jQuery('#form_main_action').val('taxonomy_filter_reset');
				jQuery(this).val('<?php _e( 'Resetting..', TFP_PREFIX ) ?>').addClass('disabled');
			});

			<?php if (isset($_GET['updated'])) { ?>
			jQuery('#setting-error-settings_updated').delay(3000).slideUp(400);
			<?php }	?>
		});
		</script>

		<div id="poststuff">
			<div id="post-body" class="metabox-holder">
				<div id="post-body-content">
					<form method="post" action="">
						<p>
							<?php _e( 'Choose in which taxonomy admin page box show filter field. Change "hide filter" checkbox if you want to hide filter field if taxonomy has no values. You can enable a taxonomy filter by checking his checkbox input beside taxonomy names.', TFP_PREFIX ) ?>
							<?php _e( 'When you enable a taxonomy filter, a section for choosing hidden taxonomy terms is displayed in every WordPress user profile\'s settings page. In that page you can select a list of taxonomy terms that are automatically removed from hierarchical term taxonomies inside admin pages.', TFP_PREFIX ) ?><br />
							<span class="description"><?php _e( 'Note: The plugin does not support non-hierarchical tags.', TFP_PREFIX ) ?>
						</p>
						<?php
						// Prints out all settings of taxonomy filter main settings page
						do_settings_sections( 'taxonomy_filter_main_section' );
						?>

						<input id="form_main_action" name="taxonomy_filter_main_action" type="hidden" value="taxonomy_filter_main_update" /><br />
						<p>
							<input name="submit" type="submit" class="button-primary taxonomy_filter_main" value="<?php _e( 'Save', TFP_PREFIX ) ?>" />
							<input name="reset" type="submit" class="button-primary taxonomy_filter_main reset" value="<?php _e( 'Reset', TFP_PREFIX ) ?>" />
						</p>
					</form>
				</div>
			</div>
		</div>
	</div>
	<?php
}

/**
 * Render admin main settings page options and fields
 */
function taxonomy_filter_main_fields() {
	?>
	<table class="wp-list-table widefat fixed posts taxonomy-filter-table" cellspacing="0">
		<thead>
			<tr>
				<th scope="col" id="cb" class="manage-column column-cb check-column"></th>
				<th scope="col" id="name" class="manage-column label-column"><?php _e( 'Name', TFP_PREFIX ) ?></th>
				<th scope="col" id="slug" class="manage-column slug-column"><?php _e( 'Slug', TFP_PREFIX ) ?></th>
				<th scope="col" id="rewrite" class="manage-column slug-column"><?php _e( 'Rewrite slug', TFP_PREFIX ) ?></th>
				<th scope="col" id="options" class="manage-column options-column"><?php _e( 'Options', TFP_PREFIX ) ?></th>
			</tr>
		</thead>
		<tfoot>
			<tr>
				<th scope="col" id="cb" class="manage-column column-cb check-column"></th>
				<th scope="col" id="name" class="manage-column label-column"><?php _e( 'Name', TFP_PREFIX ) ?></th>
				<th scope="col" id="slug" class="manage-column slug-column"><?php _e( 'Slug', TFP_PREFIX ) ?></th>
				<th scope="col" id="rewrite" class="manage-column slug-column"><?php _e( 'Rewrite slug', TFP_PREFIX ) ?></th>
				<th scope="col" id="options" class="manage-column options-column"><?php _e( 'Options', TFP_PREFIX ) ?></th>
			</tr>
		</tfoot>
		<tbody id="the-list">
			<?php
			$options = get_option( TFP_OPTIONS );
			$tax_list = '';
			$i = 1;

			// Retrieve hierarchical taxonomies
			$args = array( 'hierarchical' => true );
			$taxonomies = get_taxonomies( $args, 'objects' );

			if ( $taxonomies ) {
				// Loop taxonomies
				foreach ( $taxonomies as $taxonomy ) {
					// Retrieve current taxonomy data
					$slug = $taxonomy->rewrite[ 'slug' ];
					$name = $taxonomy->name;

					// Append taxonomy name to a variable containing taxonomy list
					$tax_list .= $name . ',';

					// Check if current taxonomy is checked
					$checked = '';
					if ( $options->$name->replace == 1 ) $checked = 'checked="checked"';
					?>
					<tr id="post-<?php echo $i ?>" <?php echo ($i % 2 == 0) ? 'class="alternate"' : '' ?> valign="top">
						<th scope="row" class="check-column">
							<?php echo '<input type="checkbox" id="' . $name . '" name="taxonomies[' . $name . ']" value="1" ' . $checked . '>' ?>
						</th>
						<td class="label-column">
							<label for="<?php echo $name ?>">
								<?php echo $taxonomy->labels->name; if ($taxonomy->_builtin == 1) echo ' <span class="description" style="color:#ababab">(builtin)</span>' ?>
							</label>
						</td>
						<td class="slug-column"><?php echo $name ?></td>
						<td class="slug-column"><?php echo $slug ?></td>
						<td class="options-column">
							<label><input type="checkbox" id="hide_blank_opt[<?php echo $name ?>]" name="hide_blank_opt[<?php echo $name ?>]" value="1" <?php if ( ! empty( $options ) && $options->$name->hide_blank == 1 ) echo 'checked="checked"';?> /> <?php _e( 'Hide filter if no element of the taxonomy is associated', TFP_PREFIX ) ?></label>
						</td>
					</tr>
					<?php
					$i++;
				}
			}
			?>
		</tbody>
	</table>
	<input type="hidden" name="tax" value="<?php echo $tax_list ?>"/>
	<?php
}

/**
 * Show admin main settings page
 */
function taxonomy_filter_option_main_show() {
	taxonomy_filter_main_fields();
}

/**
 * Save admin page main settings
 */
function taxonomy_filter_save_main_settings() {
	// Read main options and backup hidden taxonomies value
	$options = get_option( TFP_OPTIONS );
	$hidden_taxonomies_backup = $options->hidden;

	// Explode taxonomy list
	$taxonomies = explode( ',', $_POST[ 'tax' ] );
	$options = new stdClass();

	// Manage save actions
	if ( $_POST[ 'taxonomy_filter_main_action' ] != 'taxonomy_filter_reset') {
		// Read post data
		if ( isset( $_POST[ 'taxonomies' ] ) ) $taxs = $_POST[ 'taxonomies' ];
		else $taxs = array();
		if ( isset( $_POST[ 'hide_blank_opt' ] ) ) $hide_blank_opt = $_POST[ 'hide_blank_opt' ];
		else $hide_blank_opt = array();

		// Loop taxonomies
		foreach ( $taxonomies as $taxonomy ) {
			if ( isset( $taxonomy ) && ! empty( $taxonomy ) ) {
				// Set data (from post request)
				if ( $taxs[ $taxonomy ] == 1 ) $replace = 1;
				else $replace = 0;
				if ( ! empty( $hide_blank_opt[ $taxonomy ] ) ) $hide_blank = 1;
				else $hide_blank = 0;
				$option = new stdClass();

				// Save taxonomy slug
				$option->slug = $taxonomy;
				// Save replace value (1 = replace, 0 = WordPress default)
				$option->replace = $replace;
				// Save hide blank value (1 = hide, 0 = show)
				$option->hide_blank = $hide_blank;

				// Add current taxonomy to options class
				$options->$taxonomy = $option;
			}
		}
	}
	else {
		// Loop taxonomies
		foreach ( $taxonomies as $taxonomy ) {
			if ( ! empty($taxonomy ) ) {
				// Set data (from defaults)
				$replace = TFP_DEFAULT_REPLACE;
				$hide_blank = TFP_DEFAULT_HIDE_BLANK;
				$option = new stdClass();
				$hidden_taxonomies_backup = array();

				// Save taxonomy slug
				$option->slug = $taxonomy;
				// Save replace value (1 = replace, 0 = WordPress default)
				$option->replace = $replace;
				// Save hide blank value (1 = hide, 0 = show)
				$option->hide_blank = $hide_blank;

				// Add current taxonomy to options class
				$options->$taxonomy = $option;
			}
		}
	}

	// Prepare array for hidden terms
	$options->hidden = ( ! empty( $hidden_taxonomies_backup) ) ? $hidden_taxonomies_backup : array();

	// Save main options
	update_option( TFP_OPTIONS, $options );

	// Reload admin settings page
	header("Location: options-general.php?page=" . TFP_PREFIX . "&updated=true");
}