<?php
/**
 * Admin Page Helper Class for TablePress with functions needed in the admin area
 *
 * @package TablePress
 * @subpackage Views
 * @author Tobias Bäthge
 * @since 1.0.0
 */

// Prohibit direct script loading
defined( 'ABSPATH' ) || die( 'No direct script access allowed!' );

/**
 * Admin Page class
 * @package TablePress
 * @subpackage Views
 * @author Tobias Bäthge
 * @since 1.0.0
 */
class TablePress_Admin_Page {

	/**
	 * Enqueue a CSS file
	 *
	 * @since 1.0.0
	 *
	 * @param string $name Name of the CSS file, without extension(s)
	 */
	public function enqueue_style( $name ) {
		$suffix = ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) ? '' : '.min';
		$css_file = "admin/{$name}{$suffix}.css";
		$css_url = plugins_url( $css_file, TABLEPRESS__FILE__ );
		wp_enqueue_style( "tablepress-{$name}", $css_url, array(), TablePress::version );
	}

	/**
	 * Enqueue a JavaScript file, possibility with dependencies and extra information
	 *
	 * @since 1.0.0
	 *
	 * @param string $name Name of the JS file, without extension(s)
	 * @param array $dependencies List of names of JS scripts that this script depends on, and which need to be included before this one
	 * @param bool|array $localize_script (optional) An array with strings that gets transformed into a JS object and is added to the page before the script is included
	 * @param bool $force_minified Always load the minified version, regardless of SCRIPT_DEBUG constant value
	 */
	public function enqueue_script( $name, $dependencies = array(), $localize_script = false, $force_minified = false ) {
		$suffix = ( ! $force_minified && defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) ? '' : '.min';
		$js_file = "admin/{$name}{$suffix}.js";
		$js_url = plugins_url( $js_file, TABLEPRESS__FILE__ );
		wp_enqueue_script( "tablepress-{$name}", $js_url, $dependencies, TablePress::version, true );
		if ( ! empty( $localize_script ) ) {
			foreach ( $localize_script as $var_name => $var_data ) {
				wp_localize_script( "tablepress-{$name}", "tablepress_{$var_name}", $var_data );
			}
		}
	}

	/**
	 * Register a filter hook on the admin footer
	 *
	 * @since 1.0.0
	 */
	public function add_admin_footer_text() {
		// show admin footer message (only on pages of TablePress)
		add_filter( 'admin_footer_text', array( $this, '_admin_footer_text' ) );
	}

	/**
	 * Add a TablePress "Thank You" message to the admin footer content
	 *
	 * @since 1.0.0
	 *
	 * @param string $content Current admin footer content
	 * @return string New admin footer content
	 */
	public function _admin_footer_text( $content ) {
		$content .= ' &bull; ' . __( 'Thank you for using <a href="http://tablepress.org/">TablePress</a>.', 'tablepress' );
		$content .= ' ' . sprintf( __( 'Support the plugin with your <a href="%s">donation</a>!', 'tablepress' ), 'http://tablepress.org/donate/' );
		return $content;
	}

	/**
	 * Print the JavaScript code for a WP feature pointer
	 *
	 * @since 1.0.0
	 *
	 * @param string $pointer_id The pointer ID.
	 * @param string $selector The HTML elements, on which the pointer should be attached.
	 * @param array $args Arguments to be passed to the pointer JS (see wp-pointer.js).
	 */
	public function print_wp_pointer_js( $pointer_id, $selector, $args ) {
		if ( empty( $pointer_id ) || empty( $selector ) || empty( $args ) || empty( $args['content'] ) )
			return;
		?>
		<script type="text/javascript">
		(function($){
			var options = <?php echo json_encode( $args ); ?>, setup;

			if ( ! options )
				return;

			options = $.extend( options, {
				close: function() {
					$.post( ajaxurl, {
						pointer: '<?php echo $pointer_id; ?>',
						action: 'dismiss-wp-pointer'
					});
				}
			});

			setup = function() {
				$('<?php echo $selector; ?>').pointer( options ).pointer('open');
			};

			if ( options.position && options.position.defer_loading )
				$(window).bind( 'load.wp-pointers', setup );
			else
				$(document).ready( setup );
		})( jQuery );
		</script>
		<?php
	}

} // class TablePress_Admin_Page